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Confidential (7-Jun-00) http://www.rosharon.wireline.slb.com/sptext/prodinfo/manuals/manuals.htm

Table of Contents

Safety ................................................................................................................................... 1

General Safety .....................................................................................................................................................................1

References............................................................................................................................................................................1

Field Safety Procedures for Conventional Electric Detonators ......................................................................................3Predeparture Check ...........................................................................................................................................................3Arrival At Wellsite ............................................................................................................................................................3Outside Preparations..........................................................................................................................................................4Rigging-Up........................................................................................................................................................................4Gun Arming.......................................................................................................................................................................6Operational Procedures in the Well...................................................................................................................................7

Field Safety Procedures for Slapper Activated Firing Equipment, (SAFE-BA and SECURE Detonators) ...............8Predeparture Check ...........................................................................................................................................................8Arrival at Wellsite .............................................................................................................................................................8Outside Preparations..........................................................................................................................................................9Rigging-Up........................................................................................................................................................................9SAFE-BA Gun Preparation .............................................................................................................................................10Gun Arming.....................................................................................................................................................................10Operational Procedures in the Well.................................................................................................................................11

Field Safety Procedures for Coil-Tubing-Deployed Perforating Guns Fired Electrically..........................................13Determining Equipment to Use .......................................................................................................................................13Job Preparation................................................................................................................................................................13Equipment Preparation and Rig-Up ................................................................................................................................13Operational Procedures in the Well.................................................................................................................................14

Gun Disarming for all Types of Electrically Fired Guns...............................................................................................14

Hazardous Gases...............................................................................................................................................................14

Post-Job Checks ................................................................................................................................................................14

Gun Handling....................................................................................................................................................................14

Fishing Operations............................................................................................................................................................15

General Rules for Transportation of Explosives and Radioactive Materials ..............................................................15Common Rules for Both Explosives and Radioactive Materials.....................................................................................15Transport of Explosives...................................................................................................................................................16Transport of Radioactive Materials and Explosives on the Same Vehicle ......................................................................16Offshore Transport ..........................................................................................................................................................17Prepacked Expendable Kits.............................................................................................................................................17Reporting Theft or Loss of Explosive Material...............................................................................................................17

Disposal of Explosives.......................................................................................................................................................17

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http://www.rosharon.wireline.slb.com/sptext/prodinfo/manuals/manuals.htm Confidential (7-Jun-00)

TablesTable 1. Explosive Safety Equipment Check List ............................................................................................2


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Safety

General SafetyThe protection of personnel and property is of primary importance. To ensure the safety and health of allpersonnel, Schlumberger has specific procedures for the handling of explosives in the shop and at the wellsite.Compliance with these rules is mandatory.

IT IS THE RESPONSIBILITY OF EACH EMPLOYEE TO KNOW AND FOLLOWSCHLUMBERGER OPERATING RULES.

Every field engineer/technician is a supervisor and a representative of Schlumberger. As such, theengineer/technician is responsible for the crew. Safety is an important responsibility. Therefore, it is mandatoryfor the engineer/technician to ensure all safety procedures are carried out and to exercise good judgement indetermining whether working conditions are acceptable for safe operations.

IF A JOB CAN’T BE DONE SAFELY, DON’T DO IT AT ALL.

ReferencesInformation including, training, ordering, gun descriptions and loading instructions for specific gun systems,and explosive policies or procedures can be found at or ordered from either:

• Schlumberger Reservoir Completions Technology Center

• Schlumberger Riboud Product Center

Additional information, including minimum safe practices for the United States and Canada can be found at thefollowing:

1. United States Department of Transportation Regulations (49 CFR)

2. Bureau of Alcohol, Tobacco and Firearms Regulations (27 CFR)

3. Canada Transportation of Dangerous Goods Act and Regulations (TDG)

4. American Petroleum Institute (API)

5. Institute of Makers of Explosives (IME)

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Safety Tube H041901

Detonator Carrying Case (CYC-W) H018373

Padlock for Detonator Carrying Case and Explosive Remnant Box H406452

Key for padlocks H406454

Explosive Remnant Box H014813

Casing-to-Rig Voltage Monitor (SFT-111) H117313

Schlumberger Safety Multimeter (SFT-300) H622622

Safety Meter (SFT-109 Obsolete) H123080

Battery, Silver Chloride Cell (for Safety Meter SFT-109) E020570

Safety Grounding Device of Truck/Unit (Spool, Connection, Strap, C. Clamp)

Offshore Unit

H117555

H117556

Explosives Field Safety Procedures Check List H709745

“Danger Explosives – Turn Off Two Way Radios and Radio Phones” sign B024663

“Flip” Explosive Placards B027326

U.S. DOT Motor Carrier Identification sticker H530052

Table 1. Explosive Safety Equipment Check List


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Field Safety Procedures for Conventional Electric Detonators

Predeparture Check1. Check that all equipment, carrying cases, etc., which contain explosives are properly marked and labeled,

according to Schlumberger and the country or local regulations. See the Explosives Safety Manual(C200570)

2. Ensure that all explosives are properly packed, separated and secured.

3. Check that blasting cap carrying cases are properly mounted, locked and grounded, and that remnant boxesare grounded and locked.

4. Check to see that all necessary transport papers are completed correctly and accurately.

5. Ensure transport vehicles are properly placarded and drivers properly licensed according to localregulations.

Arrival At Wellsite1. Hold consultation with client, if possible, to confirm the perforating plan (well name, interval, correlation

reference log, perforating objective, charge size and density, gun/packer size, orientation, well restrictions).Discuss any production or testing schedules that may follow the perforating job. This would include anyplan to flow the well between perforating runs, downhole pressures expected, pressure equipment needed,and a contingency plan if an unexpected “kick” occurs. Find out if hydrogen sulfide (H2S) is expected.Discuss rig safety and any existing hazardous conditions, including designated smoking areas. (Smokingmaterial must be stored when leaving these areas.)

2. Check the well area for the following hazards and correct when necessary:

a. Safe accesses to the catwalk, rig or wellhead. Eliminate any Stepping, Handling and Lifting issues.

b. Clear any potential fire or electrical hazards.

c. Halt any rig maintenance that may interfere with the explosive arming procedure.

d. Check for hazards that can disturb the logging cable such as traffic or overhead obstacles.

e. Check the proximity of RF antennas or high voltage power lines.

f. Check the area for other explosives operations that have been scheduled to proceed during the sametime.

3. Decide where gun make-up will take place. Some rigs have a “controlled area” for explosives. Clear allunnecessary personnel from the controlled area and put up barriers if necessary.

4. Hold a spot safety meeting with the client, the entire Schlumberger crew and all personnel involved in theoperation. Discuss items such as:

a. A brief outline of the perforating plan, discussing who has what responsibilities and telling all nonessential personnel to stay clear until notified.

b. General safety with wireline operations.

c. Radio silence plan.

d. The controlled explosive area.

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e. Pressure control equipment.

f. Agree to any hand signals that may be used during the operation.

Outside Preparations1. Turn off electrical cathodic protection system devices.

2. Discontinue all welding operations and turn off welding machines.

3. Turn off all transmitters (radio, cellular, radar, etc.) within 1,000 ft (300 m) of the well. Receiving unitslocated within the established safe distance must be disabled such that an incoming call cannot activate thetransmitter. If any receiver or transmitter must remain enabled, contact your Operation Manager. See theExplosives Safety Manual (C200570) for information concerning establishing safe working distances.

4. If the well is within 5 miles of a large transmitter (radio or TV station) or within 200 ft (70 m) of highvoltage (>10kv) power lines, contact your Operations Manager. See the Explosives Safety Manual(C200570) for information concerning establishing safe working distances.

5. On water operations, install the positive grounding cable from the truck to the barge or from the wirelineunit to the generator skid.

Rigging-Up1. Rig up the cable. Remove any rig wiring that might contact the cable. Top drive systems should be

electrically isolated in accordance with the manufacture’s recommended procedures.

2. Check for stray voltage between the rig, casing and cable armor using a multi-meter. Eliminate at thesource if present. Start with a high voltage range and reduce the range until the residual voltages are lessthan 0.25 V.

3. Test and install the SFT-111 Casing-to-Rig Voltage Monitor according to the instructions provided in thischapter. If the residual voltage is not zero, attempt to eliminate it before proceeding.

Warning

DO NOT PROCEED WITH THE OPERATION IF RESIDUAL VOLTAGE IS IN EXCESS OF 0.25 V.

4. Install safety ground straps by:

a. Visually inspecting the ground connection to the logging unit, connect the plug to the socket on thereel.

b. Visually inspecting the straps and C clamps for damage, rust, etc. and check continuity between Cclamps, logging unit, ground and cable armor.

c. Attach each clamp securely, one to the derrick and one to the casing.

d. Check continuity of these connections using a multi-meter.

e. Bring the multi-meter back inside the logging unit. Only the safety meter or safety multimeter isallowed outside the logging unit until the end of the operation.


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Warning

“HOTCHECKS” (passing current through a cable, head and CCL, or applying voltage to the cable) arepermitted only on the condition that the cable head is brought into the logging cab. No power is to beapplied through a gun or explosive tool assembly at any time while on the surface, ARMED ORUNARMED.

5. Set out signs reading “Danger Explosives – Turn Off Two Way Radios and Radio Phones” (B024663).Place one at the site and one at each entrance to the site. Once the signs are erected, ensure all radio,cellular, etc. transmissions are deactivated.

6. Prepare the instrument cab for explosive operations as follows:

a. Ensure continuity of logging cable to safety switch. Do not disconnect collector plug.

b. Turn off all AC powered instrumentation.

c. Turn off all main circuit breakers and the inverter on Blue/SWPT systems.

d. Turn off AC generators, disconnect rig power, disconnect generators driven by main winch engines andturn off exciter field switches.

e. Turn the Collector Safety Switch to “OFF” and remove key. The key MUST remain outside thewireline unit until the explosive device is introduced into the well to a minimum depth of 200 ft (70 m)below ground level or the sea floor.

Warning

ONLY AC power circuits for safety systems such as purge and pressurization systems, fire and gasdetection systems and electric winch motive power can be left connected (if these are installed and need tobe used). These circuits must be independent of the PDP. All AC power into PDP must be turned off.

7. Procedure for attaching any explosive device (i.e., CST, casing or tubing cutters, setting tools, perforatingguns, etc.) to the cable:

a. Arming or disarming a gun must not be attempted during a thunderstorm, dust storm, sandstorm, orduring the arrival of helicopters or boats at an offshore site. Arming procedures must not becommenced if such weather is expected to arrive before the arming operation can be completed and thegun introduced into the well to a minimum depth of 200 ft (70 m) below ground level or the sea floor.

b. Verify the Casing-to-Rig Voltage Monitor is reading less than 0.25 V.

c. Clear line of fire of all personnel. No other work is to be done on the rig and no one is to be above orbelow the rig floor during assembly, arming, disarming or disassembly operations.

d. Attach the explosive device to the head or collar locator. The individual performing this operationMUST have the safety switch key in his/her possession at the time. The key is to remain outside thewireline unit until the explosive device is introduced into the well to a minimum depth of 200 ft (70 m)below ground level or the sea floor.

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Note

Only a Schlumberger Safety Multimeter (H622622) or Schlumberger Safety Meter (H123080) may be usedwhen checking electrical explosive devices (EEDs) and their circuits. All Schlumberger Safety Multimeters(red meter and red carrying case) or Schlumberger Safety Meters (red meter and black leather case) havethe Schlumberger logo and name on the face of the meter dial. Do not use conventional multi-meter:Weston, Simpson, etc. The only approved power cell for the safety meter is the silver chloride cell(E020570) available from warehouse stock.

Gun ArmingBefore proceeding to specific arming procedures, you are reminded that: ONLY THE ENGINEER ORTECHNICIAN IN CHARGE OF THE JOB MAY ARM OR DISARM A GUN. THEENGINEER/TECHNICIAN MUST NEVER DELEGATE THIS JOB.

Caution

The cable must be attached to the gun string before the gun string is armed. Guns that are not electricallyconnected to the cable when the head is attached (such as in a multiple gun string) may be armed,immediately prior to their use at the wellsite and then attached to the cable (before the bottom gun orbottom two guns if using a diode switch are armed).

Arming procedures vary from gun type to gun type, however some steps must be observed for all gun types.These steps are:

1. Confirm line of fire is clear of all personnel. No other work is to be done on the rig and no one is to beabove or below the rig floor during assembly, arming, disarming or disassembly operations.

2. Remove the blasting cap from carrying case with lead wires still shunted together.

3. Place cap in Safety Tube (H041901). Close lid and secure with hand screws.

4. Remove shunt after closing Safety Tube cover and check resistance using the Schlumberger SafetyMultimeter or Schlumberger Safety Meter.

5. Cut one wire lead to the desired length at a time. Do not simultaneously cut both lead wires. Stripinsulation off wires as needed.

6. Prepare conductor wire lead and check for sparking.

7. Splice and insulate conductor wire to one blasting cap lead.

8. Prepare ground wire lead and splice to blasting cap lead, then insulate.

9. Make a fresh square cut on the detonating cord using only an approved detonating cord cutter. See thesection on Detonating Cord Cutter included in this manual.

10. Remove cap from Safety Tube and insert detonating cord.

11. Push cap onto detonating cord until it seats.

12. Crimp the cap onto the detonating cord using proper crimping techniques or insert blasting cap in boosterholder. Remember to use a cork (H432083) or rubber (P172102) shield for fluid desensitization if required.

13. Prepare gun for watertight seal.

14. Store all explosive remnants


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Operational Procedures in the Well1. Proceed into the well.

2. At a minimum depth of 200 ft (70 m) below ground level or the sea floor, turn on the Collector SafetySwitch, restore AC power, etc. Continue in hole.

3. Tie in, position gun and shoot.

4. Come out of hole. At a minimum of 200 ft (70 m) below ground level or the sea floor, prepare theinstrument cab as for explosive operations (Rigging Up - 6a through 6e) and verify the casing to rig voltageis less than 0.25 V.

Caution

If a thunderstorm, dust storm or sandstorm threatens to arrive before the disarming operation can becompleted, the gun must be kept in the well at a minimum depth of 200 ft (70 m) below ground level or thesea floor.

5. If the gun(s) did not fire, immediately disarm the lowermost gun, or bottom two guns if using a diodeswitch. Use the procedures described in the Disarming section of the Wireline Perforating Field OperationsManual for the gun system being run, BEFORE the gun is disconnected from the cable. If the gun hasbecome separated from the cable for any reason, follow all safety procedures as if the cable was stillattached. Disarm the detonator ballistically before electrically immediately after the gun is returned to thesurface.

6. All guns must be safely relieved of any trapped pressure immediately upon removal from the well using theprocedure described in this manual for the specific gun string.

7. Repack unused detonators. Police the area for detonating cord remnants, unused or misfired charges, etc.and pack them in the explosives remnant box.

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Field Safety Procedures for Slapper Activated Firing Equipment,(SAFE-BA and SECURE Detonators)

Predeparture Check1. The ESIC-CB incorporates safety features that must be verified before use at the wellsite. These features

include the DC standoff voltage, polarity selectivity and the RF filter circuit. All of these functions can betested with either the ESIB test box or using ESIC FIT and TRIM procedures. These tests must beperformed prior to each job to verify the ESIC is operating properly.

2. The EFI should be installed just prior to running in the well. Since the EFI contains explosives that aresensitive to moisture, it is packaged in a hermetically sealed bag with a packet of desiccant, If the bag isdamaged or opened, or if there is any sign of moisture on the EFI, do not use the EFI.

3. Check that all equipment, carrying cases, etc., which contain explosives are properly marked and labeled,according to Schlumberger and the country or local regulations. See the Explosives Safety Manual(C200570).

4. Ensure that all explosives are properly packed, separated and secured.

5. Check that remnant boxes are grounded and locked.

6. Check to see that all necessary transport papers are completed correctly and accurately.

7. Ensure transport vehicles are properly placarded and drivers properly licensed according to localregulations.

Arrival at Wellsite1. Hold consultation with client, if possible, to confirm the perforating plan (well name, interval, correlation

reference log, perforating objective, charge size and density, gun/packer size, orientation, well restrictions).Discuss any production or testing schedules that may follow the perforating job. This would include anyplan to flow the well between perforating runs, downhole pressures expected, pressure equipment needed,and a contingency plan if an unexpected “kick” occurs. Find out if hydrogen sulfide (H2S) is expected.Discuss rig safety and any existing hazardous conditions, including designated smoking areas. Smokingmaterial must be stored when leaving these areas.

2. Check the well area for the following rig hazards and correct when necessary:

a. Safe accesses to the catwalk and/or rig. Eliminate any Stepping, Handling and Lifting issues.

b. Clear any potential fire or electrical hazards.

c. Halt any rig maintenance that may interfere with the explosive arming procedure.

d. Check for hazards that can disturb the logging cable such as traffic or overhead obstacles.

3. Decide where gun make-up will take place. Some rigs have a “controlled area” for explosives. Clear allunnecessary personnel from the controlled area and put up barriers if necessary.

4. Hold a spot safety meeting with the client, the entire Schlumberger crew and all personnel involved in theoperation. Highlight to all that a “SAFE” system is to be used. Discuss items such as:

a. A brief outline of the perforating plan, discussing who has what responsibilities and telling all nonessential personnel to stay clear until notified.


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b. General safety with wireline operations.

c. The controlled explosive area.

d. Pressure control equipment.

e. Agree to any hand signals that may be used during the operation.

Outside Preparations1. Electrical cathodic protection systems can be left powered.

2. Electrical welding operations can be continued except in areas where explosives are stored or are in use.

3. Radio transmitters can be left powered and used without restrictions. Operations may be performed in wellsalongside (but not underneath) high voltage power lines providing that the minimum clearance of allequipment and personnel from the lines is 30 ft (10 m).

4. Helicopter and boat operations can be continued.

5. On water operations, install the positive grounding cable from the truck to the barge or from the wirelineunit to the generator skid.

6. Set out signs reading “Danger Explosives” or equivalent to warn persons coming onto the site thatexplosives operation are being carried out. Place one at the site and one at each entrance to the site.

Rigging-Up1. Rig up the cable. Remove any rig wiring that might contact the cable.

2. Casing-to-Rig voltages can exceed the 0.25 V limitation used when conducting conventional detonatoroperations, but MUST NOT exceed 40.0 V. Although this level of voltage is non-hazardous for “SAFE”operations, it does present a risk to personnel and should be reported to the client representative at thewellsite.

3. Test and install the SFT-111 Casing-to-Rig Voltage Monitor according to instructions.

DO NOT PROCEED WITH THE OPERATION IF RESIDUAL VOLTAGE IS IN EXCESS OF 40 V.

4. Install safety ground straps by:

a. Visually inspecting the ground connection to the logging unit, connect the plug to the socket on thereel.

b. Visually inspecting the straps and C clamps for damage, rust, etc. and check continuity between C-clamps, logging unit, ground and cable armor.

c. Attach each clamp securely, one to the derrick and one to the casing.

d. Check continuity of these connections using a multi-meter.

e. Bring the multi-meter back inside the logging unit. Only the safety meter or safety multimeter isallowed outside the logging unit until the end of the operation.

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Warning

“HOTCHECKS” (passing current through a cable, head and CCL) are permitted only on the condition thatthe cable head is brought into the logging cab. No power is to be applied through a gun or explosive toolassembly at any time while on the surface, ARMED OR UNARMED.

5. Prepare the instrument cab for explosive operations as follows:

a. Ensure continuity of logging cable to the Collector Safety Switch. Do not disconnect collector plug.

b. Turn off all AC powered instrumentation.

c. Turn off all main circuit breakers and the inverter on Blue/SWPT systems.

d. Turn off AC generators, disconnect rig power, disconnect generators driven by main winch engines andturn off exciter field switches.

e. Turn the Collector Safety Switch to “OFF” and remove key. The key MUST remain outside thewireline unit until the explosive device is introduced into the well to a minimum depth of 200 ft(70 m) below ground level or the sea floor.

Warning

ONLY AC power circuits for purge and pressurization systems, fire and gas detection systems and electricwinch motive power can be left connected (if these are installed and need to be used). These circuits mustbe independent of the PDP. All AC power into PDP must be turned off.

SAFE-BA Gun Preparation1. Lay out guns in proper sequence.

2. Clear line of fire of all personnel. No other work is to be done on the rig and no one is to be above or belowthe rig floor during assembly, arming, disarming or disassembly operations.

Warning

SAFETY PINS MUST BE INSTALLED ONTO THE GUN STRING DURING ALL OF THEFOLLOWING STEPS.

3. Verify electrical connection to each cartridge using a Schlumberger Safety Multimeter (H622622).

4. Prepare the SAFE-BA basic units and connect to guns.

5. Make up gun string mechanically.

6. Splice wires and electrically check from head to cartridge bottom using the Schlumberger SafetyMultimeter (H622622).

Gun ArmingBefore proceeding to specific arming procedures, you are reminded that: ONLY THE ENGINEER ORTECHNICIAN IN CHARGE OF THE JOB MAY ARM OR DISARM A GUN. THEENGINEER/TECHNICIAN MUST NEVER DELEGATE THIS JOB.


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Caution

The cable must be attached to the gun string before the gun string is armed. Guns that are not electricallyconnected to the cable when the head is attached (such as in a multiple gun string), may be armedimmediately prior to their use at the wellsite and then attached to the cable (before the bottom gun orbottom two guns if using a diode switch are armed).

1. Procedure for attaching explosive device (i.e., casing or tubing cutters, setting tools, perforating guns, etc.)to the cable:

a. Arming or disarming a gun must not be attempted during a thunderstorm, dust storm or sandstorm.Arming procedures must not be commenced if such weather is expected to arrive before the armingoperation can be completed and the gun introduced into the well to a minimum depth of 200 ft (70 m)below ground level or the sea floor.

b. Clear line of fire of all personnel. No other work is to be done on the rig and no one is to be above orbelow the rig floor during assembly, arming, disarming or disassembly operations.

c. Attach gun string to the head or collar locator (ensuring SAFE-BA safety barriers are still in place). Theindividual performing this operation MUST have the safety switch key in his/her possession at thetime. The key is to remain outside the wireline unit until the explosive device is introduced into thewell to a minimum depth of 200 ft (70 m) below ground level or the sea floor.

2. Confirm line of fire is still clear.

3. For Secure detonator operations:

a. Cut one wire lead to desired length at a time. Do not simultaneously cut both lead wires. Stripinsulation off wires as needed.

b. Prepare conductor wire lead and check for sparking

c. Splice and insulate conductor wire to one SECURE lead.

d. Prepare ground wire lead and splice to SECURE lead, then insulate.

e. Insert booster into SECURE detonator and lock in place.

f. Prepare gun for watertight seal.

4. Pick up guns. Remove SAFE-BA safety barriers and completely make up the EFI Head to the gun string.

Operational Procedures in the Well1. Proceed into the well.

2. At a minimum depth of 200 ft (70 m) below ground level or the sea floor, turn on the Collector SafetySwitch, restore AC power, etc. Continue in hole.

3. Tie in, position gun and shoot.

4. Come out of hole. At a minimum of 200 ft (70 m) below ground level or the sea floor, prepare theinstrument cab as for explosive operations (Rigging Up - 5a through 5e) and verify the casing to rig voltageis less than 40 V.

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Caution

If a thunderstorm, dust storm or sandstorm threatens to arrive before the disarming operation can becompleted, the gun must be kept in the well at a minimum depth of 200 ft (70 m) below ground level or thesea floor.

5. If the guns did not fire:

a. Immediately disarm guns by inserting all safety barriers for SAFE-BA actuated devices BEFORE theguns are disconnected from the cable or,

b. For Secure detonator operations, immediately disarm the lowermost gun using the procedure describedin the Disarming section of the Wireline Field Operations Manual (C200499) for the gun system beingrun, BEFORE the gun is disconnected from the cable.

6. All guns must be safely relieved of any trapped pressure immediately upon removal from the well using theprocedure prescribed in this manual.

7. Repack all unused EFIs, boosters or SECURE detonators. Check the area for detonating cord remnants,unused or misfired charges, etc. and pack them in the explosives remnant box.

Complete instructions for the use and maintenance of all SAFE-BA applications can be found in the SAFE-BAMechanical and Electrical Volume Maintenance Manual (C200419).


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Field Safety Procedures for Coil-Tubing-Deployed Perforating Guns FiredElectricallyTo perforate with guns deployed on coiled tubing and fired electrically via an integral wireline, the followingexplosive safety rules shall be applied. Standard pressure handling and coiled tubing operation safety rules mustalso to be followed.

Determining Equipment to Use1. Either a “SAFE” system or an electric detonator may be used if an electric-before-ballistic arming sequence

can be followed. This sequence has three parts:

a. Attach the cable head first;

b. Attach the detonator electrically second; and then

c. Make the ballistic connection to the gun.

2. If the bottom gun in the string cannot be armed using the electric-before-ballistic arming sequence (forwhatever reason, be it gun length, lubricator characteristics, or wellhead pressure) then a “SAFE” system isthe only approved method to electrically actuate the guns.

3. Top-arming a gun with an electric detonator in the same electric-before-ballistic manner is also allowed, ifthere is only one gun or one assembly of ballistically connected guns in the string.

Job Preparation1. Observe all standards listed on the current Schlumberger Field Safety Procedures placard.

2. Remove rig wiring that might contact the coiled tubing or the lead between the coiled tubing and loggingunits.

3. Install the grounding straps between wellhead rig coiled tubing reel, logging unit and generator.

Equipment Preparation and Rig-Up1. Before attaching any explosive device to the cable, the Collector Safety Switch in the wireline unit must be

turned off and the key removed. If no Collector Safety Switch exists in the logging unit, the coiled tubingunit shall be equipped with a Collector Safety Switch installed between the collector and the lead going tothe logging unit.

2. The individual attaching the explosive device to the head shall have the safety switch key in his/herpossession.

3. The safety switch key shall remain outside the wireline (or coiled tubing) unit until the explosive device isintroduced into the well to a minimum depth of 200 ft (70 m) below ground level or the sea floor.

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Operational Procedures in the Well1. At a minimum depth of 200 ft (70 m) below ground level or the sea floor, turn on the Collector Safety

Switch, restore AC power and continue into the hole.

2. When coming out of the hole, at 200 ft (70 m) turn off and remove the safety switch key as above.

Gun Disarming for all Types of Electrically Fired GunsThe disarming of any explosive is the responsibility of the engineer/technician as was the arming. In the interestof safety and efficiency, the engineer/technician physically performs the act of arming and disarming. Neithertask is to be delegated.

It is mandatory that all explosive field safety procedures be observed whenever an armed gun is returned to thesurface.

Specific instructions for each gun system is located under Disarming in either the Wireline Perforating FOM(C200499) or the Maintenance Manual for the gun system being run.

Hazardous Gases1. Hazardous gases produced during detonation can include carbon monoxide and nitrogen oxides.

2. Caution should be exercised where these gases can collect and every effort should be made to adequatelyventilate the area.

3. The use of monitoring equipment and breathing apparatus is recommended in confined areas.

4. If detonating fumes are inhaled, move immediately to an area of fresh air. Apply artificial respiration ifindicated. Call a physician immediately.

Post-Job Checks1. Make sure all equipment brought to the well is loaded for the return trip and make an inventory.

2. If the DOT/Transport Canada label is not on the gun, etc., replace it on any device that contains explosives.

3. Police the area for detonating cord scraps, loose charges, trash, etc.

4. Place all waste detonating cord and charges in the remnant box for transportation to the shop.

5. Short the leads of waste detonators and transport them back to the shop in the detonator carrying case.

Gun HandlingExplosives, even in their safest state, are potentially dangerous. It is good practice to treat loaded guns with careand avoid shocks when handling them. This is particularly important when dealing with guns that have misfiredand contain explosives that have been subjected to high temperature for an extended period.


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Warning

HMX exhibits an increase in impact sensitivity after exposure above 330°F (166°C). If the system isexposed to temperature above 330°F, even for a short time, and if this system must be removed from thewell with unshot explosives, all normal procedures for disarming, laying down and transport should beobserved. The gun should not be downloaded until 48 hours has passed to allow the HMX to revert to itsnormal state of impact sensitivity.

Loaded guns must be stored and transported with plastic vent plugs, or o-ring groove vent systems. This allowsoutgassing of explosives in case of fire while still providing moisture protection during transportation orstorage.

Fishing OperationsThe procedures for fishing operations are similar to the procedures for misfires. All safety rules that pertain todisarming must be followed. However, one thing must be remembered: treat any gun that has been fished outof the hole as a gun with trapped pressure and proceed accordingly. It should also be noted that the gun mustbe disarmed ballistically and then electrically before any attempt is made to remove the device from the fishingtool.

General Rules for Transportation of Explosives and Radioactive MaterialsThe responsibility for ensuring that hazardous items, including explosives and radioactive materials, aretransported in a safe and correct manner lies with all members of the crew. While the engineer/technician holdsthe final responsibility, all crew members must take joint responsibility for knowing and ensuring that properprocedures are followed. They must also make sure that the transport is conducted in accordance withestablished procedures. Refer to the Explosives Safety Manual (C200570) for transportation standards.

The following are Schlumberger rules; additional local regulations may apply.

Common Rules for Both Explosives and Radioactive Materials1. Radioactive sources and/or explosives must always be the last thing loaded onto the vehicle (just prior to

departure from the facility) and the first thing unloaded from the vehicle (immediately upon arrival back atthe facility office). Sources must be returned to the storage pit immediately upon return from the wellsite;and explosives must be returned to their proper storage locations immediately upon return from thewellsite.

2. Radioactive sources and/or explosives must be properly signed in and out of the storage pits and/or bunkersfor each transport.

3. Radioactive sources and/or explosives must always be properly stored and secured for transport. Refer tothe Transport of Explosives section below for details.

4. All radiation shields and boxes or cases containing explosives must be properly labeled at all times(including loaded guns). Details on proper labeling are located in the Explosive Safety Manual and LoggingSupervisor/Assistant Radiation Manual. Vehicles must display the proper warning signs while radioactivesources and/or explosives are onboard and they must NOT be displayed if NOT onboard.

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Transport of ExplosivesBlasting caps and loaded guns may be carried on the same truck only under the following conditions:

1. Blasting caps must be carried in a blasting cap carrying case. The carrying case must be locked, grounded,and secured to an integral part of the truck.

2. The blasting cap carrying case must be placed either in the recorder cab with the door to the cab locked orin a locked compartment of the truck.

3. No more than two blasting caps may be carried for each loaded gun in transit.

4. The total weight of the explosives in the guns on the truck may not exceed 90 kg (200 lb). This is the totalweight of explosives not the weight of the guns or packing.

5. Shaped charges may be carried either in the recorder cab with the door to the cab locked or in a lockedcompartment in their original container only. Boxes of charges must be closed (sealed with tape) andpackaged as they were originally by the manufacturer.

a. If a roll of detonating cord must be transported, carry it either in the recorder cab with the door to thecab locked or in a locked compartment in its original container. The container must be sealed with tape.

b. Packer setting tool primary igniters (and secondary igniters, if applicable) must be carried in a differentblasting cap carrying case than that carrying the detonators.

c. Packer setting tool charges, such as flammable solids, must be carried separately from the explosivematerials.

6. An explosives remnant box must be available on any job using explosives. Waste detonating cord and/orexcess explosives must be transported from the job in the remnant box. Waste blasting caps must beseparated from the other explosives, shunted, and placed in the blasting cap carrying case.

7. Primary High explosives (typically detonators) must be stored in separate containers from Secondary Highexplosives (typically boosters, detonating cord and shape charges).

8. All loaded guns and explosive materials must be securely stored for transport to prevent any loss or damagewhile in transit.

Transport of Radioactive Materials and Explosives on the Same VehicleExplosives (other than class 1.1) may be transported on the same vehicle as radioactive sources. Class 1.1explosives can include some shape charges such as 58C and 64C Ultrapack, 111/16 HNS Enerjet and 51J UltrajetHMX, as well as some detonating cord, some cutters and severing tools. Refer to the Safety Explosive Manual(C200570) for details on the class of explosives. However, note that when shape charges and detonating cordsare loaded in a gun, their shipping class changes from 1.1 to 1.4, and as such, can be carried on the samevehicle as radioactive sources.

When explosives and radioactive materials are carried on the same vehicle, they should not be carried in thesame compartment of the vehicle. All rules, as listed above for each, must be complied with.


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Offshore TransportWhen transporting explosives or explosive devices offshore, follow these rules:

1. Explosives sent to a rig should be prepared in the standard, prescribed manner. High and low explosivesmust be in separate remnant boxes or original containers and blasting caps and boosters in the cap carryingcase.

2. Explosive tools on pallets must be secured by three chains in a hold-down arrangement, with a chain or rodattached to the end of the carrier that threads through the gun head protector caps. The chain or rod shouldbe locked to prevent removal during transport.

3. A shock-absorbing mounting device must be provided on the bottom of the carrier to protect guns fromexcessive shock.

4. Crew boxes that contain blasting cap carrying cases must be kept locked during transport. The case must belocked, grounded and secured inside the box.

Prepacked Expendable KitsField locations preparing Baker kits may not include the explosives unless they are carried in a blasting capcarrying case.

Reporting Theft or Loss of Explosive MaterialWhen the daily inventory reveals a possible theft or loss of explosives, or as soon as any employee acquiresknowledge of or suspects a theft or loss of explosives, the Geomarket QHSE Manager must be immediatelynotified through the Operation Manager. If explosives are missing from a shipment, notify “InTouch” and yourGeomarket QHSE Manager immediately.

In the U.S., the theft or loss must be reported to the Bureau of Alcohol, Tobacco and Firearms and theDepartment of the Treasury, within 24 hr of discovery of the theft or loss by QHSE staff. In addition, the theftor loss must be reported to local authorities and some state agencies.

Disposal of ExplosivesAll explosives must be disposed of according to the procedures described in the Explosive Safety Manual(C200570).

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