Best practices in Gas Well Best practices in Gas Well ...
Transcript of Best practices in Gas Well Best practices in Gas Well ...
Best practices in Gas Well Best practices in Gas Well Best practices in Gas Well Best practices in Gas Well DeliquificationDeliquificationDeliquificationDeliquification, OMV, OMV, OMV, OMV----PetromPetromPetromPetrom RomaniaRomaniaRomaniaRomania
September 2014September 2014September 2014September 2014
Vasile Stanculescu, Vasile Stanculescu, Vasile Stanculescu, Vasile Stanculescu,
Philipp Tippel, Laurentiu Philipp Tippel, Laurentiu Philipp Tippel, Laurentiu Philipp Tippel, Laurentiu Niculeanu Niculeanu Niculeanu Niculeanu ---- OMV OMV OMV OMV PetromPetromPetromPetrom
2 GWD Practice in OMV-Petrom|
AgendaAgendaAgendaAgenda
�Background
�Overview of Gas well Deliquification activity
�GWD - Technical applications
�Collaborations and Service Companies
�Case studies of Gas well Deliquification
�Results of Gas well Deliquification activity
�Summary and Conclusions
3 GWD Practice in OMV-Petrom|
Background Background Background Background ---- Gas Well Deliquification ActivityGas Well Deliquification ActivityGas Well Deliquification ActivityGas Well Deliquification Activity
� OMV-Petrom is the largest Producer of Oil and Gas in South Eastern Europe having approximately 700 Gas Wells
� In 2007 OMV-Petrom started with first Gas Well Deliquification tests
� Over the last 8 years, the Gas Well Deliquification (GWD) activity has recognized as a KEY process in OMV Petrom
including many Deliquification methods
4 GWD Practice in OMV-Petrom|
► Between 2008 to 2014, over 327 gas wells were installed
► The main Deliquification methods applied is:
► Foam injection, Capillary Foam injection
► Plunger Lift
► Wellhead Compression
► Additional increase production to date is around of 460000 Scm/day
(an average of 3000 Sm3/day/well equipped)
Overview Overview Overview Overview of of of of GWD GWD GWD GWD Activity Activity Activity Activity 2008200820082008----2014201420142014
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Production increase achieved vs. wells equipped 2008 Production increase achieved vs. wells equipped 2008 Production increase achieved vs. wells equipped 2008 Production increase achieved vs. wells equipped 2008 ---- 2014201420142014
Gas rate before equipped, [th.Scm/day]Gas rate before equipped, [th.Scm/day]Gas rate before equipped, [th.Scm/day]Gas rate before equipped, [th.Scm/day] Gas rate after equipped, [th.Scm/day]Gas rate after equipped, [th.Scm/day]Gas rate after equipped, [th.Scm/day]Gas rate after equipped, [th.Scm/day] No.of wells equippedNo.of wells equippedNo.of wells equippedNo.of wells equipped
Wells Wells Wells Wells
equipped in equipped in equipped in equipped in 2008200820082008Wells Wells Wells Wells
equipped in equipped in equipped in equipped in 2009 2009 2009 2009 ----
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GWD GWD GWD GWD ---- Technical applicationsTechnical applicationsTechnical applicationsTechnical applications
► Establishment the optimum lift method and uplift potential
► Challenge: Condensate Production, Choke Size/Tubing/Gas line limitations (pressure, size)
► Most Common methods used :► Foam (FI) and Capillary Foam injection(CFI)► Plunger Lift (PL) ► Velocity Strings (VS)► Compression:
- GasJack compressor (GJ)- Wellhead electrical compressor (WHC)
► Less common methods applied with good results:
► Gaslift assisted by Plunger Lift
► Gaslift optimized with Foam injection
► Hydraulic Piston pump
- In testing
6 GWD Practice in OMV-Petrom|
Collaborations and Service CompaniesCollaborations and Service CompaniesCollaborations and Service CompaniesCollaborations and Service Companies
GWDGWDGWDGWD
ActivityActivityActivityActivity
►Weatherford Comp.:
► Foamer and Capillary inj.
► PL. and GL
►Velocity string
►Hydraulic piston pump
►No. of wells equipped: 246
► Increase gas prod.:
► 300000 Scm/day
►Weatherford Comp.:
► Foamer and Capillary inj.
► PL. and GL
►Velocity string
►Hydraulic piston pump
►No. of wells equipped: 246
► Increase gas prod.:
► 300000 Scm/day
►Weatherford Comp.:
► Foamer and Capillary inj.
► PL. and GL
►Velocity string
►Hydraulic piston pump
►No. of wells equipped: 246
► Increase gas prod.:
► 300000 Scm/day
►IRCAT/Compressco Comp.:
►GasJack compressor
►No. of applications: 50
► Increase gas prod.:
► 70000 Scm/day
►IRCAT/Compressco Comp.:
►GasJack compressor
►No. of applications: 50
► Increase gas prod.:
► 70000 Scm/day
►IRCAT/SAFE Comp.:
►WH electrical compressor
►No. of applications: 17
► Increase gas prod.:
► 56000 Scm/day
►IRCAT/SAFE Comp.:
►WH electrical compressor
►No. of applications: 17
► Increase gas prod.:
► 56000 Scm/day
►Champion Comp.:
► Foam injection
►No. of applications: 6
► Increase gas prod.:
► 10000 Scm/day
►Champion Comp.:
► Foam injection
►No. of applications: 6
► Increase gas prod.:
► 10000 Scm/day
►Fangmann Comp.:
► Foam injection
►No. of applications: 1
► Increase gas prod.:
► 3000 Scm/day
►Fangmann Comp.:
► Foam injection
►No. of applications: 1
► Increase gas prod.:
► 3000 Scm/day
►Baker/BJ Services Comp.:
► Foam injection
►No. of applications: 7
► Increase gas prod.:
► 20000 Scm/day
►Baker/BJ Services Comp.:
► Foam injection
►No. of applications: 7
► Increase gas prod.:
► 20000 Scm/day
7 GWD Practice in OMV-Petrom|
Case 1. Case 1. Case 1. Case 1.
Gas well optimized by Sticks and Gas well optimized by Sticks and Gas well optimized by Sticks and Gas well optimized by Sticks and FoamerFoamerFoamerFoamer
W1 W1 W1 W1 Field Field Field Field 1111 ---- ResultsResultsResultsResults
► Well description:
► Well had an fluctuating production with gas rate
between 9000 Scm/day and 13000 Scm/day
► 4-5 months soap sticks have been used as treatment
but even with this method well continued to have:
- High differential casing-tubing pressure
- Fluctuating of gas rates between 12000 Scm/day
and 17000 Scm/day
► Objective:
►Maintaining gas rate to a constant value of 17000 Scm/day
►Unloading the well
► Results:
► Well was equipped with continuous foam injection in the annulus
► After installation the gas production was increased to 18000 Scm/day,
with low fluctuating
8 GWD Practice in OMV-Petrom|
Results of Case 1Results of Case 1Results of Case 1Results of Case 1
► Gas well optimized by Sticks and Foamer injection in annulus
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Gas Rate, [th.Scm/day]Gas Rate, [th.Scm/day]Gas Rate, [th.Scm/day]Gas Rate, [th.Scm/day] Cassing Pressure [bar]Cassing Pressure [bar]Cassing Pressure [bar]Cassing Pressure [bar] Tubing Pressure, [bar]Tubing Pressure, [bar]Tubing Pressure, [bar]Tubing Pressure, [bar]
BeforeBeforeBeforeBefore applicationapplicationapplicationapplication
SticksSticksSticksSticks applicationapplicationapplicationapplication
FoamerFoamerFoamerFoamer applicationapplicationapplicationapplication
9 GWD Practice in OMV-Petrom|
Case 2. Case 2. Case 2. Case 2.
Gas well assisted by Gas well assisted by Gas well assisted by Gas well assisted by FoamerFoamerFoamerFoamer and Capillaryand Capillaryand Capillaryand Capillary
W2 Field 2 W2 Field 2 W2 Field 2 W2 Field 2 ---- ResultsResultsResultsResults
► Well description:
►Gas well was in production, equipped with foamer injection
►After foamer treatment, the tubing pressure increased from 26 bar to 35 bar and gas rate from 6000 Scm/day to 8000 Scm/day
►Volume of foamer injected was 8 liters/day for 2 cm/day of liquid
► Objective:
►Reducing costs of foamer injection
►Eliminating gas production fluctuation
► Increasing the gas rate
► Results:
►Well was equipped with continuous foamer
injection through the capillary, foamer rate for
injection was 6 liters/day for 1,5 cm/day of liquid
►Tubing pressure increased from 35 bar to 37 bar and gas rate from 8000 Scm/day to 12000 Scm/day, well producing constant
10 GWD Practice in OMV-Petrom|
Results of Case 2 Results of Case 2 Results of Case 2 Results of Case 2
► Gas well assisted by Foamer injection and Capillary
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Gas Rate, [th.Scm/day]Gas Rate, [th.Scm/day]Gas Rate, [th.Scm/day]Gas Rate, [th.Scm/day] Cassing Pressure, [bar]Cassing Pressure, [bar]Cassing Pressure, [bar]Cassing Pressure, [bar] Tubing Pressure, [bar]Tubing Pressure, [bar]Tubing Pressure, [bar]Tubing Pressure, [bar]
BeforeBeforeBeforeBefore applicationapplicationapplicationapplication
CapillaryCapillaryCapillaryCapillary applicationapplicationapplicationapplication
FoamerFoamerFoamerFoamer applicationapplicationapplicationapplication
11 GWD Practice in OMV-Petrom|
Case 3.Case 3.Case 3.Case 3.
GasliftGasliftGasliftGaslift Well Converted to flowing Gas WellWell Converted to flowing Gas WellWell Converted to flowing Gas WellWell Converted to flowing Gas Well
W3 Field W3 Field W3 Field W3 Field 2222 ---- Results Results Results Results
► Well description:
►Gaslift well used 12000 Scm/day of injection gas
Gas production from reservoir was 3000 Scm/day
with 2.5 cm/day of liquid
► Objective:
►Reducing costs with gas injected
►Obtaining a constant gas rate
► Results:
►Well was equipped with continuous foamer injection
►The gas injection rate decreased from 12000-15000 Scm/day to
6000 Scm/day
►The reservoir gas rate increased from an average of 3000 Scm/day to 4000 Scm/day
►Gas injection stopped and the well produced only with foamer injection. The foamer rate used for lift was 6 liters/day for 2.5 cm/day of liquid
12 GWD Practice in OMV-Petrom|
Results of Case 3Results of Case 3Results of Case 3Results of Case 3
► Gaslift Well Converted to Gas Well
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Installation of continuous Installation of continuous Installation of continuous Installation of continuous foamerfoamerfoamerfoamer injectioninjectioninjectioninjection
Injection rate was dropped Injection rate was dropped Injection rate was dropped Injection rate was dropped
to 6000 to 6000 to 6000 to 6000 ScmScmScmScm/day/day/day/day
Injection rate was Injection rate was Injection rate was Injection rate was
stoppedstoppedstoppedstopped
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13 GWD Practice in OMV-Petrom|
Case 4.Case 4.Case 4.Case 4.
GasliftGasliftGasliftGaslift assisted by Plunger Liftassisted by Plunger Liftassisted by Plunger Liftassisted by Plunger Lift
W4 Field 3 W4 Field 3 W4 Field 3 W4 Field 3 ---- Results Results Results Results
► Well description:
►Gaslift well used 5000 Scm/day to lift of 0.9 cm/day liquid
Gas production from formation was 1000 Scm/day with
0.3 cm/day of oil
► Objective:
► Increase of oil production
►Dewaxing of tubing
► Results:
►Well was equipped with Plunger Lift equipment
► 8 intermittent cycles per day were established, with
the same gas rate for lifting, 5000 Scm/day
► It solved the problem of tubing Dewaxing
►The reservoir gas rate increased from 1000 Scm/day to
5000 Scm/day and oil rate increased from 0.3 to/day to
1 to/day
14 GWD Practice in OMV-Petrom|
Results of Case Results of Case Results of Case Results of Case 4444
► Gaslift assisted by Plunger Lift
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15 GWD Practice in OMV-Petrom|
Case 5.Case 5.Case 5.Case 5.
Gas well assisted by Wellhead compressorGas well assisted by Wellhead compressorGas well assisted by Wellhead compressorGas well assisted by Wellhead compressor
Backside injection systemBackside injection systemBackside injection systemBackside injection system
W5 Field 4 W5 Field 4 W5 Field 4 W5 Field 4 ---- ResultsResultsResultsResults
► Well description:
►Gas well was equipped for foamer injection,
foamer rate being 6 liters/day for 1,5 cm/day of liquid
►Well had an fluctuating production, with low
gas rate between 3000 Scm/day and 6000 Scm/day
► Objectives:
►Loading liquid and increasing the gas rate
► Results:
►Wellhead compressor (GJ) for Backside injection was installed
►The foamer injection was stopped during Backside injection
►The gas aspirated was injected in annulus for unloading liquid Tubing pressure increased from 1 bar to 6-8 bar and gas rate from 4000 Scm/day to 17000 Scm/day
►After unloaded liquid, well was reequipped for foamer injection
16 GWD Practice in OMV-Petrom|
Results of Case Results of Case Results of Case Results of Case 5555
► Gas well assisted by Wellhead compressor - Backside injection
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GWDGWDGWDGWD
Period of Backside injectionPeriod of Backside injectionPeriod of Backside injectionPeriod of Backside injection
GWDGWDGWDGWD
17 GWD Practice in OMV-Petrom|
Results of Gas well Deliquification activityResults of Gas well Deliquification activityResults of Gas well Deliquification activityResults of Gas well Deliquification activity
�Number of applications: 327 wells
�Additional increase production:
�460000 Scm/day, 2990 boe/day
�Plan for 2014:
�Optimization: 35 wells
�Test: “Hydraulic piston pump”
Gas well Gas well Gas well Gas well DeliquificationDeliquificationDeliquificationDeliquification methodsmethodsmethodsmethodsAssets / No. of wells equipped vs. active
TotalTotalTotalTotal1 2 3 4 5 6 7 8 9
Simple foamer injection (liquid+solid) 7/1 104/46 11/7 5/1 5/5 1/1 2/1 0 54/26 195/88
Foamer inj. with capillary outside the tubing 0 1/0 0 0 0 0 0 0 0 1/0
Foamer inj. with capillary through the tubing 3/0 30/16 0 0 3/2 0 4/2 0 31/21 71/41
Plunger Lift 0 7/6 0 0 0 0 0 0 3/2 10/8
WH compressors (GasJack) 0 10/3 18/5 0 2/2 4/4 4/2 0 12/11 50/27
TotalTotalTotalTotal 10/1 152/71 35/12 5/1 10/9 5/5 10/5 0 100/60 327/164
Total 2007 Total 2007 Total 2007 Total 2007 ---- To dateTo dateTo dateTo date 327/164327/164327/164327/164
Total expected end of 2014Total expected end of 2014Total expected end of 2014Total expected end of 2014 342/175342/175342/175342/175
18 GWD Practice in OMV-Petrom|
�Workshop for exchange
of experience
�Alignment of all
involved disciplines
�Buy-in and ownership
of operations
�“Lessons Learned”
“State of the Art” vs. “Fit for Purpose” Technology“State of the Art” vs. “Fit for Purpose” Technology“State of the Art” vs. “Fit for Purpose” Technology“State of the Art” vs. “Fit for Purpose” Technology
Share best Practices Share best Practices Share best Practices Share best Practices
�Role of technology
drivers
�Contracts, Benefits
� Tailor - made training
Service companies Service companies Service companies Service companies Pilot tests Pilot tests Pilot tests Pilot tests
�New applications to
prove applicability
Fit for Purpose ApplicationsFit for Purpose ApplicationsFit for Purpose ApplicationsFit for Purpose Applications
� Alpha VSR Flowmeter
� Ren Gate™ Master Valve
19 GWD Practice in OMV-Petrom|
Summary and Conclusions of GWD activitySummary and Conclusions of GWD activitySummary and Conclusions of GWD activitySummary and Conclusions of GWD activity
► Summary
► Soap sticks - Cheaper method but used very rarely
► Foamer injection (Capillary string) - More wells equipped, in extending
►Plunger lift - Good results, in extending, step by step implementation
►Hydraulic piston pump - In testing
►Compression - Many application, in extending
► Conclusions
►The success of activity is based on good collaboration between Petrom and Service Companies
►Based on the good results obtained, we will extend number applications and continue testing new methods:
- Different types of condensate foamers
- Alpha VSR Flowmeter
Thank you!Thank you!Thank you!Thank you!