AN INTEGRATED PETROLEUM RESERVOIR

MANAGEMENT (MDT) OF A MATURE OILFIELD

PRIMER The current low oil price

environment has stagnated oil field

developments; Companies incentivized

to generate value by optimizing

extraction from existing, mature

assets. Integrated Petroleum Reservoir

Management vital to this endeavor

SET CLEAR

OBJECTIVES

RESERVOIR

CHARACTERIZATION

and EVALUATION

Selveindran, A.; Simone, A; Chen, J.; Joslin, B.; Narayan, R.; Rendon, C.; Sharma, P.

Dept. of Petroleum Engineering

2(a).RESERVOIR CHARACTERIZATION

Porosity Cut-off: 4%

Permeability Cut-off 0.04mD

SIMULATION MODEL

2(b).RESERVOIR EVALUATION

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2

3.WATERFLOOD ASSESSMENT

SENSTIVITIES AND

ECONOMIC

EVALUATION

4.HIGH RESOLUTION NUMERICAL SIMULATION (3∅, 3D)

Reopen upper zone/reperforate

Convert to Injector

once residual

saturation

reached/water-cut

limit reached

Waterflood pattern

tightening in poorer

porosity area

So1000 ft

1.OBJECTIVES Evaluate a

mature waterflooded oil-field and

generate field re-development

options in a short time-frame (<2

months)

WATERFLOOD

PERFORMANCE

ASSESSMENT

KEY RECOMMENDATIONS How to add value and maximize

oil recovery? (in order of cheapest to most expensive)

1. Infill opportunities with recompletions

2. Waterflood pattern tightening

3. Complete wells with sand frac. (>+25% IP)

4. Conduct pilot EOR (CO2 – WAG) with lab work

5. CO2 injection North-side of the field

5.ECONOMIC EVALUATION

Oil production DRIVEN by geology

Larger circles = higher cumulative

production

Waterflood performance

affected by geology

WATERFLOOD ABC PLOTS

Key economic

infill drilling

locations

Waterflood

optimization

Potential CO2

flood location

Field oil saturation map @ 2016

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2

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2

Challenges

1. High water production

2. Sub-optimal well placement

3. High residual (“left-behind”) oil

Good flood performance

Poor flood

performance

KEY LEARNINGS

• How a MDT approach

creates value

• How to work as a team

with professionals from

various backgrounds

> College of Engineering

> College of Geoscience

> School of Business

APPROVED RESOURCES

DISCOVERED RESOURCES

MULTI-DISCIPLINARY TEAM (MDT) WORKFLOW

Cumulative oil production over porosity map

High productivity

Avg. productivity

WaterOil

Oil P

roducti

on r

ati

o

Water Production ratio

OIL

(B

ILLI

ON

BB

LS)

0

5

10

15

20

25

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