ANALYSIS OF DETERMINING DELIVERABILITY TEST AND TRANSIET PRESSURE IN PW-02 WELL OF ALPHA FIELDS
Puri Wijayanti (a*), Lestari Said (b), Prakash Jet Singh (b)
(a) Program Studi Teknik Perminyakan, FTKE, Universitas Trisakti, Jakarta Barat 11440, Indonesia
*puri.wijayanti[at]trisakti.ac.id
(b) Program Studi Teknik Perminyakan, FTKE, Universitas Trisakti, Jakarta Barat 11440, Indonesia
Abstract
Quantitative analysis of reservoir properties in a well is determined by transient pressure analysis. Transient pressure according to its type consists of Pressure Build up and Pressure Draw Down. this analysis provides an overview of the characteristics of a reservoir. This analysis includes the process of determining drainage area, shape, heterogeneity, porosity, average pressure, skin, permeability, and distance from a reservoir to boundary or flow discontinuities. This test is to determine the ability of gas production in the PW-02 Well, carried out by using the Modified Isochronal test method. This test aims to determine the productivity of a potential (Absolute Open flow). Transient pressure test on PW-02 Well using the Pressure Build up Test (Type Curve Pressure Derivative) method, it is found that the well model is Vertical well and the reservoir model is Two porosity PSS. While the boundary model obtained is Rectangle. Then, the data obtained in the form of positive skin is 1.46, the permeability is 62.5 mD and the reservoir pressure is 2529.32 psia. Based on the analysis obtained Absolute Open Flow Potential (AOFP) of 117406 mscf/D. While the deliverability test value obtained is 117413 mscf/D with a n value of 0.825.
Keywords: AOFP, Pressure Build Up Test, Modified Isochronal Test, Well Testing, Derivative Pressure
Topic: Material Engineering