Title:

Estimating Reservoir Properties and Well Performance Using Surface Production Data

Authors:

Viet T. Hoang

Conference:

Stanford Geothermal Workshop

Year:

1982

Session:

Two-Phase Flow

Language:

English

File Size:

353KB

View File:

Abstract:

Reliable and sufficient welltest data is necessary for the evaluation of reservoir properties and well performance. Best results are usually obtained by monitoring downhole pressure and flow rate continuously during a transient test. However, a recurring problem for geothermal welltests has been the failure of the downhole pressure instrument in the high temperatures and hostile environments, typical of these wells. Usually an incomplete set of data or data without downhole pressure is used for analysis which provides only limited or erroneous results. This paper presents a technique of applying a wellbore simulator and a reservoir simylator sequentially to-the surface data in order to simulate the downhole condition during a flowtest, thus allowing estimation of the reservoir properties and well performance. Comparisons of the estimated results and the results obtained from the conventional welltest analysis indicate that this technique can provide a good estimate of the reservoir properties and well performance when downhole data is lacking.


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