Technical Description and Specifications of the ... products/VibraEnforcer specification manual...

Description of the VibraEnforcer System

Nordic Energy Services AS Department: Fishing Department

ISSUED BY: DATE: REVISION NO.: APPROVED BY: SIGN/DATE:

Sonny Sola 09/09/14 PAGE 19 OF 23

ANDREBORE:USERS:ANDREBORE:DROPBOX (MARKEDSAVDELINGEN):DEPRO WEB:WEB PRODUCT:KICK TOOL:VIBRAENFORCER SPECIFICATION MANUAL (1) (1).DOC

Introduction Technical Description and Specifications of the VibraEnforcer Systems for Freeing Stuck Pipe in Drilling Operations

Nordic Well Services and Advanced Drilling Support Services (ADSS) has identified a major requirement in the oil and gas drilling industry for the provision of a surface operated oscillation system to free stuck drillpipe and casing. The initial objective, of applying Surface Oscillation Units techniques to our industry, was to overcome some of the many issues surrounding freeing stuck pipe such as cost, number of loads, excessive crew sizes and environmental impact. The application of Surface Oscillation Units offers many benefits to the drilling and work over process. The very high costs and safety issues associated with applying conventional techniques has resulted in a certain degree renewed interest in searching for new and simplified solutions to some of the work over requirements. Main Benefits of VibraEnforcer Unit

• Simplified equipment • Reduced number of crews • Cost effective • Increased well up time

These first four reasons commonly sited as THE reason for considering using Oscillation Units and any other benefits are secondary. The secondary benefits of Oscillation Units include:

• Reduces drilling costs. • Accelerates production

In 1997 a Joint Industrial Project was formed between Statoil, Norsk Hydro, Shell International and Rogaland Research to develop technology to reduce friction and free stuck objects in the wellbore

This led to the concept of reducing friction between drillstring and casing / open hole by introducing axial oscillations to the drill string.

From 2000 throughout 2002 Nordic Well Services in conjunction with Rogaland Research Institution developed the following tools and systems:






Thru-Tubing and Drilling System

1. VibraHammer - for ”fishing” of stuck pipe or objects with oscillations. 2. VibraBlaster - Oscillations are used to break down scale and liquidize settled out mud and

debris 3. VibraReach - reducing friction in wellbores and extending the reach of the drillstring

Surface Oscillation System

1. VibraEnforcer - for recovery of stuck pipe or casing in Drilling Operations The VibraEnforcer The VIBRAENFORCER SYSTEM generates controlled axial oscillations in the drill string from the rig floor. The system consists of vibration compensation cylinders, flow control valve and an oscillation generator. The system is activated through hydraulic flow rate manipulation controlled by the operator. The system represents an innovative technology for removing stuck tubulars and is a low risk alternative to conventional fishing operations. It is the most effective use of rig time while evaluating down hole methods!

Resonance System: What does it imply?

The Mechanical oscillator - generates axial movement The Work string - transmits resonant energy The Stuck member - “fish” to be recovered






Resonance Method Benefits n Potential savings versus Conventional fishing n Ability to Circulate and Rotate n Substantial savings on rig time n Quickly and easily applied n No Downhole intervention n Reduced risk






The Effects of Oscillations

n Great force applied at the stuck point. n Dilation and contraction of pipe body. n Fluidization. n Reduction of friction.

Resonance Technology

Freeing Stuck Objects in the Well bore: n Resonance is applied from surface and transmitted to the stuck area.






n The stuck pipe is subjected to cyclic loading that progress through the stuck interval from top to bottom.

n Frictional resistance tends to decrease with resonance, the sticking problem will tend to degrade and the pipe can become free.

Drilling Applications n Drill pipe and bottom hole assembly

n Differential stuck n Key-seated n Hole collapse n Junk retrieval

n Installation of casing and liners n Casing recovery for sidetrack

Other Application: • Freeing stuck tubing or drill-pipe

• Shifting stuck sliding sleeves

• Freeing stuck production packers

• Freeing stuck bridge plugs

• Freeing stuck Gravel Pack Screens

• Freeing stuck retrievable whip-stocks

• Will aid in most fishing operations

• Swedging out collapsed tubing

• Freeing and retrieving tubing conveyed perforating

• Reducing friction drag in casing and liner deployment






VibraEnforcer Specifications

Bi-Directional Rams

4 each Bi-directional slip rams with a diameter of 180mm

Maximum closing pressure is 207 bars

Maximum pulling/pushing force is 215 tonn

Slip rams for 2-7/8”, 3-1/2”, 4-1/2”, 5” and 5-1/2” Tubing

All necessary piping, valves, hoses and seal kits






Main Drive case

Main Drive case with top and bottom support plates and center hole with a diameter of 8,3 inch

8 each bearings GRNA 901 with a diameter of 190x90x64 mm

4 each eccentric loads each with a weight of 85 kg

4 each bearing housings

2 each hydraulic motors with a maximum revolution of 700 rpm

2 each axel






6 each spacers

Load compensator

4 each hydraulic cylinders each 125x900 mm. Maximum pressure rating is 207 bar. Maximum

pulling force is 103.6 ton

4 each accumulators with a volume of 20 liters each and preloaded to 30 bars

Hoses and piping between accumulators and cylinders including a connection manifold.

1 each bottom plate with a 8,3 inch diameter hole through the center. Plate dimensions are






1240x900x60mm

Calculation Report and Stress Analysis Report






Hydraulic Power Pack 100 KW Diesel – Hydraulic power pack Capacity 120 litres per minutes at 3000 PSI Frame Full skid with fork lift pockets and lifting points for crane Frame size 2400 x 2400 x 2400 mm Hydraulic tank capacity of 500 litres, stainless steel material, level indicator visual,

temperature indicator, pressure balance filter and filling cap. Temperature and level alarm.

Engine 6 Cylinder Detroit, SUN 6105 IE with 100 KW at 1600 RPM, including starter panel, stop solenoid, alternator, temperature control and exhaust piping. Diesel tank capacity is 100 litres

Hydraulic pump Variable pressure compensated LS piston pump with capacity of 75 ccm including safety bleed valve

Control valve 6 section control valve with pressure regulation and pressure gauges Pressure filter 10 micron filter with visual indicator Return filter 10 micron filter with visual indicator Gauges 63 diameter OD – 0 to 3500 PSI Accumulators 4 each 50 litres accumulators Battery 1 each 12 volt, 80 ampere Piping Gold-plated seal ring Hydraulic hoses Hydraulic hoses from power pack to control panel shall be ¾” OD and rated

for 5000 PSI working pressure and shall be 15 meters long Control Panel Panel A remote operated panel shall accomplish the power pack Functions 6 functions shall be operated from the panel:

- Stationary gripper ram – open and close - Travelling gripper ram – open and close - Main jack – up and down - 3 auxiliary functions – open and close

Gauges Each function shall have a corresponding pressure gauge in PSI with pressure adjustments

Hydraulic Hoses The panel shall be equipped with complete hydraulic hoses for full operation. The hoses shall be ½ inch OD, be minimum 3 meters long and shall be rated

for 5000 PSI working pressure.






Confirmed prices

Qty Description Unit price Total price NOK 1 VibraEnforcer Unit 950,000 950,000 Hydraulic Power Pack 1 Function testing and acceptance Included Included 1 Documentation and certification Included Included






Delivery Terms

Delivery time 12 weeks Testing Time 1 week VAT N/A Delivery BMS DePro Currency NOK Documentation Data sheet, operational procedures i.e. Payment 30 days after approved acceptance test

Technical Description and Specifications of the ... products/VibraEnforcer specification manual...

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