Polymer Injection as a Development Strategy to Improve Oil Recovery in the BKH Layer of YDP Field
Bambang Bintarto,
Dedy Kristanto,
Hariyadi,
Yovi Dwinata Pranajaya
Issue:
Volume 11, Issue 3, May 2023
Pages:
53-63
Received:
22 April 2023
Accepted:
15 May 2023
Published:
25 May 2023
Abstract: There are still have a potential oil to be produced, the reduced reservoir pressure due to continuous oil production at a high rate, and the high water cut value are the background for the polymer injection process in the BKH Layer of YDP Oil Field. Due to a high water cut value, the study then conducted using a polymer injection method. Screening criteria for polymers injection was conducted to see the suitability of the reservoir, and then carry out an advanced scenarios using polymers of various concentrations to be compared, and see a cumulative incremental oil production and recovery factor. The stages including collecting and preparing data, processing and analyzing RCAL, SCAL, and PVT data, input data to simulation model with actual conditions. The reservoir simulation performed including initialization, history matching and PI matching, carry out polymer injection scenarios with certain polymer concentrations, then predict and analyze the scenario results, and finally determine the best polymer injection scenario to be applied in the BKH layer of YDP field. Based on the results of the study, it is shows that the scenario IV-A is the best scenario for polymer injection compared to other scenarios. Scenario IV-A performed by injection of polymer with a peripheral pattern with an additional 5 (five) injection wells, injection pressure of 1200 psi, injection rate of 300 bbl/d, polymer concentration of 0.6 lb/bbl, incremental recovery factor of 2.01%, and oil production cumulative obtained until December 2035 is 5087 MSTB.
Abstract: There are still have a potential oil to be produced, the reduced reservoir pressure due to continuous oil production at a high rate, and the high water cut value are the background for the polymer injection process in the BKH Layer of YDP Oil Field. Due to a high water cut value, the study then conducted using a polymer injection method. Screening ...
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Study on the Mechanism of Siliceous Dolomite — A Case Study in a Field of Sichuan Basin
Wang Jie,
Zhang Tieqiang,
Sun Desheng,
Li Jianhua,
Zhang Sheng,
Yan Zhenhua
Issue:
Volume 11, Issue 3, May 2023
Pages:
64-68
Received:
6 June 2023
Accepted:
21 June 2023
Published:
8 July 2023
Abstract: This study mainly explores the genesis of regional siliceous dolomite. Previous research was mainly based on petrological observations, conventional elemental analysis, stable isotope analysis, and elemental geochemistry, but the genesis of siliceous rocks is controversial. Based on quantitative analysis of siliceous rocks, this study investigated the source of siliceous dolomite through seismic data, curvature attributes, and paleogeography, and analyzed genetic mechanism of siliceous dolomite. The study found that siliceous dolomite gradually thickens from west to east, with a maximum thickness of 60 meters. Multiple volcanic channels are distributed in the well1 area, which spewed siliceous hot springs. Controlled by the ancient structural background, siliceous hot springs flowed from the high plateau to the low-lying area inside the plateau. Under the action of seawater, siliceous hot springs and dolomite underwent metasomatism to form siliceous dolomite. The innovation of this study lies in the use of multiple methods, such as seismic data, curvature attributes, and paleogeography, to study the genesis of siliceous dolomite. The research results provide new ideas and methods for further exploring the genesis of siliceous rocks.
Abstract: This study mainly explores the genesis of regional siliceous dolomite. Previous research was mainly based on petrological observations, conventional elemental analysis, stable isotope analysis, and elemental geochemistry, but the genesis of siliceous rocks is controversial. Based on quantitative analysis of siliceous rocks, this study investigated ...
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