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AAPG-Freiberg

Thursday 28.05.2015

Dr.-Ing. Melvin Kome

Institute of Drilling Engineering and Fluid Mining

TU Bergakademie Freiberg, Germany

Institut für Bohrtechnikund Fluidbergbau

PETROLEUM ENGINEERS AND PETROLEUM GEOLOGIST

„DO WE NEED EACH OTHER ?“

Vs

AAPG-Freiberg: 28.05.15

TU Bergakademie Freiberg | Institut für Bohrtechnik und Fluidbergbau | Agricolastr. 22, 09599 Freiberg | www.tu-freiberg.de | Dr.-Ing. Melvin Kome| AAPG Freiberg | 28.05.15 2

Key Players in the O&G Upstream Sector

Drilling Engineers Reservoir Engineers Production Engineers

PETROLEUM ENGINEERS

Geophysicists Geologists

GEOSCIENTISTS


TU Bergakademie Freiberg | Institut für Bohrtechnik und Fluidbergbau | Agricolastr. 22, 09599 Freiberg | www.tu-freiberg.de | Dr.-Ing. Melvin Kome| AAPG Freiberg | 28.05.15

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Geoscientists: Reservoir Characterization (Static Model)Seismic

Trap, Faults, Source Rock, Reservoir

Rock……

Next?

Appraisal Phase

Well Logs

Sandstone, Limestone, Porosity,

Fluid Saturation……

Well Cores

Porosity, Permeability,…..

1:7

Drilling Engineers


Drilling and Well Planning

What has this got to do with the PG?



Drilling and Well Design

Geological SurveyDrilling Engineer

0

500

1,000

1,500

2,000

2,500

3,000

3,500

4,000

4,500

0 100 200 300 400 500 600 700 800

de

pth

[m]

Pressure[bar]

Pressure Profile

Schichtwasserdruck

Spülungsdruck

Frac Druck

Do we need each other?

Reservoir Engineers


Reservoir Characterization and Management (Dynamic Model)



From Static to Dynamic Reservoir Models

PVT Analysis

• Saturated Oil Reservoir

• Undersaturated Oil Rservoir

• Gas Condensate Reservoir

• Dry Gas Reservoir

Take Fluid Samples, Measure

Rate, Pressure and

Temperature

Static Reservoir Model

Evaluate Rate/ Pressure Data

Perform Flow Analysis with core samples: relative

permeability, capillary pressure effects….

Reservoir Characterization



Some Reservoir Engineering Aspects

0.0001

0.001

0.01

0.1

1

10

100

1000

0.01 0.1 1 10 100 1000 10000 100000 1000000 10000000 100000000 1E+09 1E+10

qD

[-],

pD

[-],

Der

tDw[-]

Rate/Pressure Transient Analysis p/z

Gp

Flowing Material Balance Plot

Gp(AOF) =RF*OGIP

OGIP

1.00E-04

1.00E-03

1.00E-02

1.00E-01

1.00E+00

1.00E+01

1.00E+02

1E-05 1E-04 1E-03 1E-02 1E-01 1E+00 1E+01 1E+02 1E+03 1E+04

qD

d;

De

r[-]

tDd[-]

Production Decline Analysis

reD 100

reD 1000

reD 10000

reD 1,00E+07

reD 100

reD 1000

reD 10000

reD 1,00E+07


• Characterizing Pore Volume/ Reserve Estimation (OOIP, OGIP)

• Describing/Characterize Flow Mechanisms (Reservoir Dynamics)

• Estimating Quantity of Wells

• Defining the Location of Wells


Reservoir Engineering: From Static to Dynamic Models

Methodology of Reservoir Engineering and Reservoir Characterization

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METHOD 1: DIRECT PROBLEM

Formation and Geological Classification

Classify and Identify Flow Mechanism

Establish Mathematical Model

Derive Solutions to Model

Derive Methods of Analysis

METHOD 2: INDIRECT PROBLEM

Repeat Interpretation

RESULT

Parameter Estimation/ Reservoir

Characterization

Identify Reservoir Model by Pressure/Rate

Match

Data Interpretation

Model Analysis and Parameter Estimation

Identify Best Method of Analysis

Examine Test Data and Eliminate Anomaly Data

Acquire Pressure /Rate Data from Test

Rate/Pressure Transient, Production Decline, Numerical History Match → All in conformity with the

Geological Model/Classification

Dynamic Reservoir Model

Brownfields Greenfields

Production Engineers


Determine what is required to complete the wells and workover operations.

What has this got to do with PG?


Decision making

• Choice of Downhole Completion Equipment

• Plan Workover operations

• Investigate and optimize flow from Wellbore




Decision making /Role of PG

• Wellbore completion:

Screens

• Workover operations:

Fluid Injection

Hydraulic Stimulation

Matrix/Fracture Acidizing

Enhanced Oil Recovery:

Chemical Flooding





Integrated Production (Asset) Modeling

Thank You

Any “Other” Questions?

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TU Bergakademie Freiberg | Institut für ... | Professur für ... | Institutsadresse | Telefonnummer: 03731 / 39-1234 | www.tu-freiberg.de | Vortragender: Max Mustermann |

Veranstaltungstitel | 02.01.2012

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