FDP SEMINAR

PETROPHYSIC

TENGKU AMRAN TENGKU MOHD

PETROPHYSIC 2

2.1 Introduction & Objectives

2.2 Data Availability

2.3 Petrophysical Evaluation

2.3.1 Reservoir Rock and Fluid

Properties

2.3.2 Fluid Contacts

2.3.3 Cut-off Parameters

2.4 Results Summary

2.5 Uncertainties

Outline

• Brief introduction and objectives of petrophysical

study

• Main objective:

– to evaluate all available formation data to provide

petrophysical parameters ( Ø, Sw and NTG) needed for

the resource assessment process and reservoir

modeling for XXX field

2.1 Introduction & Objectives

• Brief explanation on the available data provided

for petrophysical study of each well

• May summarize in table

• E.g. wire log, PVT, etc.

2.2 Data Availability

Data availability Gelama Merah-1 Gelama Merah-1 ST-1

1. Wireline

Gamma Ray (GR) √ √

Caliper (CAL) √ √

Spontaneous Potential (SP) √ √

Resistivity √ √

Neutron √ √

Density √ √

Sonic √ √

Photoelectric √ √

2. MDT √ -

3. Core - -

4. PVT √ -

5. Final Well report √ √

6. Well Test √ -

Reservoir Rock and Fluid Properties

• Lithological determination

• Permeable and non-permeable zones

• Shale volume

• Porosity

• Water saturation & Rw

2.3 Petrophysical Evaluation

Fluid Contacts

• Water and HC bearing zones

• Fluid types

• MDT pressure plot (verify fluid contacts with log)

2.3 Petrophysical Evaluation

Cut-off Parameters

• Cut-off definition

• Sensitivity analysis to derive Vshale and porosity

cut-off

• NTG determination

2.3 Petrophysical Evaluation

• Summary of petrophysical parameters and

properties derived from the available data

2.4 Results Summary

• Any uncertainties faced during data interpretation,

the impact and measures/assumptions adopted

• E.g. lack of data

2.5 Uncertainties

THANK YOU & ALL THE BEST…!!!