Matrix Acidizing Optimization for Screened Sandstone Formation at High-Rate Gas Well of Deepwater GWK-8

Kristanto, Galih Wisnu and Ratnaningsih, Dyah Rini and Kristanto, Dedy (2022) Matrix Acidizing Optimization for Screened Sandstone Formation at High-Rate Gas Well of Deepwater GWK-8. International Journal of Petroleum Technology,, 9 (-). pp. 34-43. ISSN 2409-787X

Text 9- IJPT November 2022_Paper_IJPT1297_Galih_Wisnu, K. et.al.pdf Download (1MB)

Abstract

Deepwater GWK-8 is a gas well in deep sea with 1500 meters water depth and a
deviated well with a sandstone formation that has good permeability, potentially
high-rate gas well, high reservoir pressures, and large reservoir size. This well is
expected to immediately ramp up production at optimal productivity through
Floating Production Storage and Offloading (FPSO) in Makassar Strait. For a gas well
at deep-water exploration must be commercially viable, it needs to achieve optimal
production rate. Gas production initially was not meet the expectations, so it needed
to be optimized by one of stimulation method that suitable for this well is matrix
acidizing. Sandstone formation is screened by Shape Memory Polymer (SMP) sand
control system and matrix acidizing is carried out to optimize the deliverability of gas
well by dissolving formation impurities and normalize damage in the wellbore.
Methodology of this study begins with collecting data on reservoir data, formation
lithology, completion, and well-testing. The optimization of matrix acidizing process is
based on initial well-testing results where skin (s) of pre-acidizing is 46 with a
permeability (k) is 51.4 mD. The matrix acidizing process uses mud acid (HCl-HF) for
upper zone of deepwater GWK-8 that has been installed Shape Memory Polymer
(SMP) sand control at the pay zone area. Based on well-testing of post-matrix
acidizing, successfully proven in reducing the skin number (s) from 46 to 10,
increasing permeability (k) from 51.4 mD to 120 mD, and increasing productivity from
30 MMSCFD to 44 MMSCFD.

Item Type:	Article
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Divisions:	Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User:	Dr.Ir, MT Dedy Kristanto
Date Deposited:	31 Mar 2023 14:13
Last Modified:	31 Mar 2023 14:13
URI:	http://eprints.upnyk.ac.id/id/eprint/33102

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