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The AAPG/Datapages Combined Publications Database

Indonesian Petroleum Association

Abstract


6th Annual Convention Proceedings (Volume 1), 1977
Pages 131-144

Application of High Precision Pressure Measurements in Reservoir Evaluation

M. Ribuot, J. Exbrayat, W. Machtalere

Abstract

A high accuracy pressure sensor coupled with a high accuracy temperature sensor provides measurements which, by their absolute precision and resolution, permit appreciation of reservoir and well characteristics not detectable by conventional gauges.

A temperature sensor is necessary not only for obtaining a reliable measurement but, since any significant pressure variation is accompanied by a temperature change, the latter should also be taken into account when calculating the absolute pressure.

The measuring system developed and operated by Flopetrol is composed of:

• Integrated pressure/temperature gauge

• Surface panel with mini-computer

• Light weight winch for monoconductor (1/8") cable

Well head pressure control system.

Four case histories describing various applications in fields operated by the Company ELF AQUITAINE are presented:

1) Determination of gas/water contact in the reservoir by the gradient intercept method.

2) Pulse testing to evaluate reservoir communication without shut-in of the responding well.

3) Determination of gas reserves after a production test by material balance based on two static pressure measurements.

4) Application of interference test technique in a fractured reservoir to evaluate the fracture system volume.


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