PEG Concept

8/8/2019 PEG Concept

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Engineered Pro Active Solutions with non-traditional work.

Joint Expertise Dowell/Wireline/Anadrill/Geoquest

Creative Economics - Pay related to Production.

Production Enhancement Concepts

Int.



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IMPROVING OUR CLIENTS PRODUCTION IN EXISTING

WELLS THROUGH THE SYNERGISTIC TECHNOLOGIESOF THE SCHLUMBERGER COMPANIES.

Mission Statement



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Synergy

The Joint Actions of Companies Taken

Together Increase the Effectiveness of Each.

Client

DowellWireline &

Testing

PEG



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Objectives of Production

Enhancement

• Identify Wells with a Production Gap.

• Apply services that economically enhance production.

• Establish Feedback Loop.

• Improve Communication.



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Production Enhancement

- Well Evaluation

- Data Acquisition- Log Evaluation- Well Tests & Surveys- Production History

- Nodal Analysis- Recommend Services toenhance production- Execute services

- Evaluatepost-treatmentperformance

- Payback

- ROR, ROI, NPV- Happy Client!



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Flowrate

- Single well IPR = f (t, Np)

- Pvt

- Plumbing - Pwf Caused By Pumps

- Restrictions- Acid

- Lift System Problems

Potential

Actual

Actual

Potential

Actual

Potential

Actual

Potential

SPANProduction LoggingRSTUltraSonic Imager

Re-PerforateGravel PackSqueeze CementingAcidizing

Transient Test / Data PumpRSTProduction LoggingDipole Shear Sonic Imager

Stimulation - Frac / AcidPerforateLateralsSqueeze Cementing

Calipers - TGS/MFCTUltraSonic Imager Production LoggingCollar Locator

AcidizingScale Removal with CoilTubingCoil Tubing completionEarly Production Facility

Production LoggingData Pump

- P = f (q)

- Darcy's Law

- Physical Description

+ Impact

- Perfs

- Sand Control

- Classical Skin

- Zone Isolation

- Tubing & Flow Lines

- Traps

- Erosional Velocity

P

Services Services Services Services

Parameters Affecting

Performance


Performance


Performance


Performance

Need DefinitionNeed Definition Need Definition Need Definition

Remedial Action / SolutionRemedial Action / Solution Remedial Action / Solution

Production Gap

RESERVOIR

PERFORMANCE

COMPLETION

PERFORMANCE

FLOW CONDUIT

PERFORMANCEARTIFICIAL LIFT

PERFORMANCE

OBJECTIVE

Bottom

HoleFlowing

Pressure

2spf

12 spf

OBJECTIVE OBJECTIVE OBJECTIVE

Flowrate Flowrate FlowrateBottom

HoleFlowing

Pressure

Bottom

HoleFlowing

Pressure



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The Production Gap

25%

65%

8% 2%

Reservoir

Completion

Flow Conduit

Artificial Lift

Classification:



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Project Loop

Presentation / Meeting

Team established (contact point)

Data Collected

Data Analyzed ( Houston)

Specific Proposal Made to client

Financial Objective/Terms set

Project Execution

Post Job Evaluation

Total Performance evaluation



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Analysis Process

Catalog Multiwell Info

Identify Production Anomalies

Choose first well

Analyze Existing Completion

Move to next zone

Aquire needed data (TDT,BU)

Submit Recommendation

Post Job Evaluation

• Log Analysis

• Transient Analysis

• Nodal Analysis

• Perforation Analysis

• Frac design & Analysis

• Decline Curve analysis

• Production History Match.

• NPV Economics



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Data Requirements

• Open hole logs

• Existing completions / workover history

•Transient analysis data, pressure surveys

• Production history / Decline curves

• PVT analysis, core test data

• Field maps, structure maps, sand plays etc.• Stratigraphic correlations



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Reservoir Monitoring & PEG

• Single well simulation

• History matching / Decline curve analysis

• Reserves estimates / Remaining reserves

• Production Gap - Candidate Recognition• Well Production & Intervention Services

• Economic analysis

• Full Field Simulation (with other Schlumberger companies



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Hydrocarbon Index

10 20 30 40 50 600

10

20

30

40

50

60

Cum Prod. MCF

40+

35 to 40

31 to 35

26 to 31

22 to 26

17 to 22

13 to 17

8 to 13

4 to 8

0 to 4

N

HYDROCARBON INDEX

NOT PERFORATED

Index

Potential



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Acid Job Case history

IPR Before Acid Job

IPR after Acid job

WELL:

Location:

Sate: TX

DOWELL SCHLUMBERGERSystem Analysis Model

3000

2250

1500

750

0

0500 1000 1500 2000

Production (Mscfd) a=base

1 2 3

a

1 skin = 3.0

2 skin = 1.03 Pws Curve

Pw

f(psig)

South Texas Edwards Lime

Pr 2200 psi

H 40 ft.

K 1 md.

Skin 3

Initial Production 750 mscf/day

Potential Production From Sam Analysis 1270 mscf/day

Actual Production after FoamMat Treatment 1400 mscf/day



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Reperforation Cased History

WELL:

Lcoation:

Sate: TX


10000

7500

2500

00

250 5001000

Production (Bbls/d)a=base1 Lperf= 8 in

2 Lperf= 22in

3 Pws Curve

Pwf(psig)

5000

1 23

a

IPR Before Reperforating

IPR After Reperforating

DOLOMITE RESERVOIR

Pr 8500 psi

H 20 ft.

K 1.6 md.

Damaged Zone Radius 6 in.

Damaged Zone K .85 md.

Production after Perforating with XXX Casing Gun 55 BOPD

Production after Perforating with 1 11/16 EEJ 148 BOPDPredicted Potential Production 270 BOPD

Actual Production after Reperforating with Pivot Gun 277 BOPD



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Frac Job Cased History

WELL:

Lcoation:

Sate: TX


3000

3750

2500

1250

00

500 1000 1500 2000

Production (Mscfd) a Pwh = 1000 psi

b Pwh = 2600 psi1 Base

3 Pws Curve

Pwf(p

sig)

IPR Before FRAC

WHP 2600 psi

Unloading rate for Condensate

1 2

a

WHP = 1000 psi

Unloading rate (water)

b

IPR after FRAC

or 550 mcf @ 2600 psi

SOUTH TEXAS WILCOX

Pressure

4500 psi

Height 45 ft.

Perm .09 md.

Initial Production 0 mcf

Predicted Potential from Nodal Analysis 1500 mcf @ 1000 psi

Actual Production after Frac Treatment 600 mcf @ 2600 psi



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BHP\Z

Depletion?



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Exponential Decline

Economic Limit

Will stimulation pay out ?



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Return On Investment

Time (days)0 365

0

Payout 2

Payout 1

Added Value

Reduced Cost

Documents

PEG Concept