© weatherford. all rights reserved. artificial lift systems ® objectives for a basic gas lift...

© Weatherford. All rights reserved.

ARTIFICIAL LIFT SYSTEMS

®

Objectives for

A

Basic Gas Lift Seminar

Objectives for

A

Basic Gas Lift Seminar

© Weatherford. All rights reserved.

ARTIFICIAL LIFT SYSTEMS

®Gas lift Workshop

HISTORY

-WALS HAS CONDUCTED SEMINARS FOR MANY

YEARS

-BASIC FORMAT BY TOM RYAN (MACCO)

-EXPANDED AND IMPROVED UPON

-ORIGINALLY A ONE WEEK SEMINAR

-REDUCED TO THREE DAYS AT CUSTOMERS

REQUEST

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ARTIFICIAL LIFT SYSTEMS

®Gas Lift Workshop

SEMINAR TYPES

TECHNICAL SESSION THAT INCLUDES

THEORY

EVALUATION

GRAPHICAL DESIGN

TROUBLESHOOTING

VALVE MECHANICS

PRACTICAL SESSIONS

ADVANCED GAS LIFT COURSES

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ARTIFICIAL LIFT SYSTEMS

®Gas Lift Workshop

CURRENTLY

-SCHEDULE FOUR DOMESTIC PER YEAR

-IN-HOUSE TRAINING ON REQUEST

-INTERNATIONALLY BY REQUEST

-TWO INSTRUCTORS AT ALL TIMES

-OVER 100 PARTICIPANTS PER YEAR

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ARTIFICIAL LIFT SYSTEMS

®Gas Lift Workshop

PURPOSE

TO FAMILIARIZE CURRENT AND POTENTIAL

CUSTOMER WITH THE APPLICATION OF GAS LIFT

TO IMPROVE THE KNOWLEDGE AND PROFICIENCY OF

GAS LIFT COMPANY PERSONNEL

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ARTIFICIAL LIFT SYSTEMS

®Gas Lift Workshop

SCOPE

THE SEMINARS ARE DESIGNED TO FAMILIARIZE THE

PARTICIPANT WITH GAS LIFT APPLICATION AND

OPERATING PRINCIPLES WHILE EMPHASIZING THE

EFFECTS BETWEEN THE GAS LIFT AND THE

PRODUCING SYSTEM

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ARTIFICIAL LIFT SYSTEMS

®Gas Lift Workshop

COURSE ORGANIZATION

ULTIMATE GOAL SET FOR PARTICIPANTS IS

TO LIFT AS DEEP AS POSSIBLE WITHIN THE

CONSTRAINTS OF THE SYSTEM

USING OTHER OBJECTIVES AND CLASS

PROBLEMS,WE WORK TOWARD THAT GOAL

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ARTIFICIAL LIFT SYSTEMS

®Gas Lift Workshop

VISUAL AIDS USED DURING SEMINAR

PowerPoint

WELL MODEL

EQUIPMENT CUTAWAYS

ANIMATIONS

SOFTWARE

WEM, VALCAL, VPC

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ARTIFICIAL LIFT SYSTEMS

®Gas Lift Workshop

OBJECTIVES

FIRST, WE DEFINE THE DIFFERENT APPLICATIONS OF GAS LIFT AS USED IN

CONTINUOUS FLOW

INTERMITTENT FLOW

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ARTIFICIAL LIFT SYSTEMS

®Gas Lift Workshop

OBJECTIVES

DEFINE AND DISCUSS THE AREAS OF THE

PRODUCTION SYSTEM THAT REQUIRE PROFILING

DISCUSS THE TOOLS AVAILABLE TO

ACCOMPLISH THE TASK AND THEIR LIMITATIONS

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ARTIFICIAL LIFT SYSTEMS

®

© Weatherford. All rights reserved.

ARTIFICIAL LIFT SYSTEMS

®Gas Lift Workshop

THREE AREAS TO DEFINE

RESERVOIR

VERTICAL

HORIZONTAL

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ARTIFICIAL LIFT SYSTEMS

®PRODUCTIVITY INDEX

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ARTIFICIAL LIFT SYSTEMS

®

INFLOW PERFORMANCE RELATIONSHIP

VOGEL

SBHP

F.E. = 1.0

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ARTIFICIAL LIFT SYSTEMS

®

MULTIPHASE FLOWING GRADIENTS

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ARTIFICIAL LIFT SYSTEMS

®Multiphase Flowing Gradients

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ARTIFICIAL LIFT SYSTEMS

®VERTICAL PERFORMANCE

VERTICAL FLOW CORRELATIONS :

SHOULD BE SELECTED BASED ON COMPARISON WITH ACTUAL MEASURED DATA.

WHEN NOT AVAILABLE, SELECT DATA FROM A WELL PRODUCING UNDER SIMILAR CONDITIONS.

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ARTIFICIAL LIFT SYSTEMS

®Gas Lift Workshop

OBJECTIVES

APPLY PROCEDURES USED FOR EVALUATING

POTENTIAL OIL WELLS FOR THE

APPLICATION OF GAS LIFT

USE “HANDS ON” GRAPHICAL DESIGN AND

VERIFY WITH SOFTWARE

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ARTIFICIAL LIFT SYSTEMS

®

WELLHEAD PRESSURE VS. PRODUCTION

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ARTIFICIAL LIFT SYSTEMS

®EFFECT OF OPERATING DIFFERENTIAL

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ARTIFICIAL LIFT SYSTEMS

®WELL EVALUATION4 8 12 16

1

2

3

4

5

6

7 200 dP

600 BFD400:1 IGLR

INDICATED POI

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ARTIFICIAL LIFT SYSTEMS

®WELL EVALUATION

4 8 12 16

1

2

3

4

5

6

7 200 dP

800 BFD400:1 IGLR

INDICATED POI

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ARTIFICIAL LIFT SYSTEMS

®WELL EVALUATION4 8 12 16

1

2

3

4

5

6

7 200 dP

1000 BFD400:1 IGLR

INDICATED POI

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ARTIFICIAL LIFT SYSTEMS

®Gas Lift Workshop

OBJECTIVES

DEMONSTRATE CONTINUOUS GAS LIFT DESIGN

METHODS FOR IPO AND PPO VALVES

DESIGNS ARE ACCOMPLISHED WITH “HANDS

ON” METHOD AND VERIFIED WITH SOFTWARE

CURRENT AND FUTURE CONDITIONS

CONSIDERED AS WELL AS MINIMUM DATA

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ARTIFICIAL LIFT SYSTEMS

®Gas Lift Valve Spacing

Formation Grad

Injection Pressure

Gradient above the point of injection Differential reference line

10% error toleranceabove and below indicated POI

Indicated POI

Transfer tubing pressure

Valve #1

Valve #2

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ARTIFICIAL LIFT SYSTEMS

®

CONTINUOUS FLOW GAS LIFT DESIGN

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ARTIFICIAL LIFT SYSTEMS

®Current and Future Conditions

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ARTIFICIAL LIFT SYSTEMS

®Gas Lift Workshop

OBJECTIVE

EXAMINE THE MECHANICS OF IPO AND PPO

G.L.V.’S AND THEIR GAS PASSAGE

CAPABILITIES AS PER VPC

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ARTIFICIAL LIFT SYSTEMS

®

PRESSURE VALVEFORCE BALANCE EQUATION

PO (AB-AP) + PT (AP) = PVC (AB)

POAB -POAP + PT (AP) = PVC (AB)

POAB - POAP + PTAP = PVC AB AB AB AB AB

PO - PO AP + PT AP = PVC AB AB

PO ( 1 - R) + PTR = PVC

PO = PVC - PTR 1 - R

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ARTIFICIAL LIFT SYSTEMS

®Gas Lift Workshop

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ARTIFICIAL LIFT SYSTEMS

®Typical Loadrate Test Data

0 0.01 0.02 0.03 0.04 0.05 0.06720

740

760

780

800

820

840

860

880

Stem Travel (inch)

Test Pressure (Psig)

© Weatherford. All rights reserved.

ARTIFICIAL LIFT SYSTEMS

®Gas Lift Workshop

OBJECTIVE

PRESENT AND DISCUSS SOME OF THE

AVAILABLE TOOLS FOR EVALUATING OR

TROUBLE SHOOTING GAS LIFT INSTALLATIONS

DISCUSS ADVANTAGES AND LIMITATIONS

DISCUSS CORRECT METHODS OF USE

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ARTIFICIAL LIFT SYSTEMS

®

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ARTIFICIAL LIFT SYSTEMS

®

Gas Li ft Diagnostics

TroubleshootingAreas where problems can exist

• Inlet• Outlet• Sub-surface

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ARTIFICIAL LIFT SYSTEMS

®

© Weathe rfor d. All r ights r eserved .

ARTIFICIAL LIFT SYSTEMS

®

Gas Li ft Diagnostics

TroubleshootingDiagnostic Tools

Wireline-tagging fluid/check perfs for fillEchometerWell Tests-performed properlyInjection Gas Measurement- in and outTwo or Three Pen Charts- every wellPressure/Temperature Surveys- performed properly

© Weatherford. All rights reserved.

ARTIFICIAL LIFT SYSTEMS

®Gas Lift Workshop

OBJECTIVE

DISCUSS CURRENT METHODS AND PROCEDURES

BEING USED FOR OPTIMIZING GAS LIFT

OPERATIONS

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ARTIFICIAL LIFT SYSTEMS

®

© Weatherford. All rights reserved.

ARTIFICIAL LIFT SYSTEMS

®Gas Lift Workshop

BENEFITSPARTICIPANTS REALIZATION OF THE VALUE OF

QUALITY DATA FOR OPTIMIZING THE APPLICATION

BEFORE AND AFTER INSTALLATION

REALIZATION THAT THE EFFICIENCY OF THE SYSTEM IS

IMPROVED AND TROUBLESHOOING MINIMIZED WITH

THE PROPER APPLICATION OF THE GAS LIFT EQUIPMENT

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ARTIFICIAL LIFT SYSTEMS

®Gas Lift Workshop

BENEFITSPARTICIPANTS FROM MANY DIFFERENT AREAS

EXCHANGE IDEAS FOR REMEDIES TO PRODUCTION

PROBLEMS

MOST IMPORTANT, WE BECOME MORE AWARE OF THE

PROBLEMS AND NEEDS OF OUR CUSTOMERS AND OUR

INDUSTRY

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ARTIFICIAL LIFT SYSTEMS

®Gas Lift Workshop

THANK YOU VERY MUCH

FOR

YOUR ATTENTION