Matrix Acidizing Optimization for Screened Sandstone Formation at High-Rate Gas Well of Deepwater GWK-8
Abstract - 527


Gas well
Deep water
Matrix acidizing
Shape memory polymer sand control

How to Cite

Kristanto GW, Ratnaningsih DR, Kristanto D. Matrix Acidizing Optimization for Screened Sandstone Formation at High-Rate Gas Well of Deepwater GWK-8. Int. J. Petrol. Technol. [Internet]. 2022 Nov. 25 [cited 2024 Feb. 20];9:33-4. Available from:


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.


Shafiq MU, Mahmud HB. Sandstone matrix acidizing knowledge and future development. J Pet Explor Prod Technol. 2016; 7: 1205–16.

Crowe C, Masmonteil J, Touboul E, Thomas R. Trends in matrix acidizing. Oil Field Rev. 1992; 4: 24–40.

Hill AD, Lindsay DM. Experimental studies of sandstone acidizing. The University of Texas at Austin, 1976.

Carrejo N, Horner DN, Johnson MH. Shape memory polymer as a sand management alternative to gravel packing. Canadian Unconventional Resources Conference, vol. 1, Calgary: OnePetro; 15-17 November 2011, p. 408-20.

Wang X, Osunjaye G. Advancement in openhole sand control applications using shape memory polymer. SPE Annual Technical Conference and Exhibition, Dubai: OnePetro; 2016.

McLeod HO, Ledlow LB, Till MV. The planning, execution, and evaluation of acid treatments in sandstone formations. SPE Annual Technical Conference and Exhibition, San Francisco: OnePetro; 1983.

Stolyarov S, Alam A. Overcoming challenges while acidizing sandstone formation successfully in the Gulf of Cambay, Offshore India. North Africa Technical Conference and Exhibition, Cairo: OnePetro; 2013.

Economides MJ, Boney C. Formation Characterization, Well and Reservoir Testing. In: Economides MJ, Nolte KG, Eds. Reservoir stimulation. 3rd ed. Chichester, England, Wiley; 2000.

Ismail MS, Yahia Z, Rozlan MR, Bakar MF, Amsidom AA, Chaemchaeng P, et al. Paradigm shift in downhole sand control; the first installation of shape memory polymer as an alternative to gravel packing at BS Field, Offshore Malaysia. Offshore Technology Conference, Houston: OnePetro; 2020.

Shuchart CE, Gdanski RD. Improved success in acid stimulations with a new organic-HF system. European Petroleum Conference, Milan: OnePetro; 1996.

Mahmoud MA, Nasr-El-Din HA. Sandstone acidizing using a new class of chelating agents. SPE International Symposium on Oilfield Chemistry, vol. 7, The Woodlands: OnePetro; 2011. p. 1205-16.

da Motta EP, Plavnik B, Schechter RS. Optimizing sandstone acidization. SPE Reservoir Eng. 1992; 7: 149–53.

Al-Harthy S. Options for high-temperature well stimulation. Oil Field Rev. 2009; 20: 52–62.

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

Copyright (c) 2022 Galih Wisnu Kristanto, Dyah Rini Ratnaningsih, Dedy Kristanto


Download data is not yet available.