developing a world class gaslift management system – a ... · system – a case history from...

32nd Gas-Lift WorkshopThe Hague, The Netherlands

February 2 - 6, 2009

This presentation is the property of the author(s) and his/her/their company(ies).It may not be used for any purpose other than viewing by Workshop attendees without the expressed written permission of the author(s).

Developing a world class gaslift management system – A case history from Petroleum Development Oman

Chandran Peringod, Tariq Riyami and James Clark, Petroleum Development Oman.

Feb. 2 - 6, 2009 2009 Gas-Lift Workshop 2

Background

Technology Focus Group formation

Building blocks

Achievements

Future work

Outline


PDO Gaslift history…

Upto 1990’s PDO gaslift was quite well managed

After reaching desired efficiency levels, gaslift was embedded into routine operations

Ownership was handed over to operations community

Due to increased workloads, new projects and lack of resources, priorities got changed

This resulted lack of focus to gaslift (“Everything is everybody’s job”)

A Technology Focus Group was formed in late 2006 to bring back the focus


When Gaslift TFG took over…

Wells were waiting for gaslift valves, spares and wire line units for valve change outs.

Acute shortage of staff and skill sets in the workshop

Frequent failures in interventions

Well models outdated

Data coming in various formats, often software cannot read them.

No control on process, no one know whom to approach

No training, no communication channels..

No planning on materials

No introduction of New technology


Modelling/Design/analysis (PT)

Material management (Well Engg)

GL workshop (WS)

Subsurface interventions (WS)

Unloading/Monitoring (Programmers)

GL Optimization (PT/Programmers)

Data management (DM team)

Training (TFG/All)

New Technology (TFG/Technology Team)

Key elements of Gaslift management

TFG team quickly carried out a system review and prepared a report with action plans for implementation


Gaslift TFG Objective

• GLobal domination By end of 2010

Understand the issuesFix basic problemsShow the valueConstruct road mapManagement buy-in

2007

Build to world classAssure qualityProve value

2008/09

Get certificateUpdate technologiesShow sustainability

2010


TFG structure

Slickline

Contractor

Fahud

Focal point

Well

services

Qarn Alam

Data

Management

IT

Support

BahjaLekhwairYibal


GL workshop

Issues identified:

Old equipments and tools

Shortage of staff

AVT-1 not working

No database for gaslift workshop

Current status:

New Gaslift valve testing equipments arrived

New building by Q2 2009

4 new staff joined

Automatic Valve Tester (AVT) - II commissioned

Gaslift Valve Reliability Database (GLVRDB) launched


Quantity Description Dimensions Unit price Total price Ite

2 Test Bench 122 x 122 13220 264402 Pressure Gauge 6017 120342 Water Bath 92 x 183 15763 315264 Agers Diam 46 1271 50844 Assembly table 100 x 200 7712 308484 Set repairing valve 1991 79644 Grip wrench 1" 1102 44084 Grip wrench 1 1/2" 1102 44082 AVT Table 120 x 57 1568 31360 Computer trolleys 339 01 Bradma roll marking machine 100 x 100 1525 15252 Valve storage stand 122 x 61 7712 154242 Valve cleaning tank 100 x 100 3390 67802 Tool storage rack 100 x 200 4237 8474

ECO 158051

Supervision Elevation 0.6m+

Storage Elevation 0

Lab Elevation 0.6m+

Cleaning & Testing Elevation 0

1 Test Bench2 Water Bath3 Agers4 Assembly table5 AVT Table6 Bradma roll marking machine7 Valve storage stand8 Valve cleaning tank9 Tool storage rack

Tile on wall up to 1.8mRubber on the wallCeramic tile on floorCeramic tile on floorLinoleumCement

Toilet

1

1

2

2 44

44

5 56

77

8

8

99

pump

N2

3333

ECO

New GL Workshop coming up in Fahud


New GL workshop

All API procedures will be implemented


Material management

Issues identified:

No ownership for material management

Shortage of GL equipments like valves and spares

No plans in place to forecast the requirements and match the supply

No tracking of gaslift valve reliability testing and re- use

Current status:

New contracting strategy in place

Zero waiting time for materials

Five year plan constructed


• Issues identified– Data flow diagrams not available for many data sets– Many compatibility issues due to format changes– No database for lab activity

Data management

• Current status– Data flow process established– Compatibility issues resolved– New database for valve performance tracking (GLVRDB) – AVT-II data linked to GLVRDB


Data management

FGS data flow

Gauge dataContractor

EDMContractor

Data warehouse

IT

Data QC/Analysis in WinGlue

PT

WinGlue DBIT

RegeoNTIT

OFMIT


Well monitoring with real time data

PI screens set up for each surveillance engineer for his/her assigned well set

Surveillance by exception


Gas Lift Valve Reliability Database (GLVRDB)


AVT-2


2008 Gaslift Training requirements

Management Gaslift for managers course

PT Shell training courseWinglue course-April 2008Winglue Admin courseGLVRDB/CO2 tracer courseVisiwell training course

Programmers Shell training course Winglue courseProvide GL information sheet for each wellWell testingHow to measure gas rates

Operators Training using prototype1 day course showing videoWell testingMentoring with programmers one-to oneHow to measure gas rates

Workshop Training young technicians in Schlumberger/Weatherford workshopTraining with prototypeTraining on API/ISO proceduresAVT/GLVRDB training

Contractor -slickline Training sessions by SLB/Weatherford or Peter Koh for GLVCOPortable well testing trainingTest well for training (Dead well in Fahud??)

Training


Gaslift well simulator for Training

One unit under procurement

Will be used to train staff in Fahud base

Gaslift well simulator procured

Dedicated training room for gaslift attached to workshop


CO2 WellTracer surveys

Auto gaslift

High reliability gaslift orifice

State -of the- art testers

Lean process implementation

Retrofit gaslift

New Technologies and processes


CO2 Tracer


Auto gaslift

9 5/8“Casing, shoe@ 968.58 mTBF

7“ Casing, shoe@ 2917 mTBF

7” WD packer @ 2670 mTBF

UG1B

MG1A

Perforation: 2628-2637 mTBF



ICV @ 2700 mTBF

BLAST JOINTS TO COVER 10M ABOVE & BELOW PERFS

SPECIAL PROTECTION FOR THE CONTROL LINE TO PROTECT AGAINST EROSION ACROSS PERF INTERVALS & SSD

L/N with Blanking plug @ 2720m tbf

SSD @ 2615 mTBF

SSD @ 2580 mTBF

SSSV@ ~ 50 mTBF

9 5/8“Casing, shoe@ 968.58 mTBF

7“ Casing, shoe@ 2917 mTBF


UG1B

MG1A




ICV @ 2700 mTBF

BLAST JOINTS TO COVER 10M ABOVE & BELOW PERFS

SPECIAL PROTECTION FOR THE CONTROL LINE TO PROTECT AGAINST EROSION ACROSS PERF INTERVALS & SSD

L/N with Blanking plug @ 2720m tbf

SSD @ 2615 mTBF

SSD @ 2580 mTBF

SSSV@ ~ 50 mTBF


• Focused field wide optimization campaigns• Gaslift optimization using PU & WinGLUE under CWE• Gaslift in EOR (Steam) wells• HP/HT Sour well gaslift• More auto gaslifting• Retrofit gaslifting• Gas well deliqification

Expanding the horizons…


Internal audits and competency assurance checks

Lean process implementation

Closing the loops in gaslift.

More new technologies

Future plans


Gaslift management is all about focus

Main message


Thank you.


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developing a world class gaslift management system – a ... · system – a case history from...

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