Al-Jaber Hasanain A, Arsad Agus, Bandyopadhyay Sulalit, Abdurrahman Muslim, Abdulfatah Mohammad Yasin, Agi Augustine, Yusuf Suriatie Mat, Abdulmunem Abdulmunem R, Tahir Muhammad, Nuhma Mustafa Jawad
UTM-MPRC Institute for Oil and Gas, Faculty of Engineering, Universiti Teknologi Malaysia, Skudai, Johor 81310, Malaysia.
Department of Chemical Industries Technologies, Southern Technical University, Basrah 61006, Iraq.
Molecules. 2023 Jul 31;28(15):5770. doi: 10.3390/molecules28155770.
This study aimed to address the challenges faced by mature oilfields in extracting substantial oil quantities. It focused on improving the efficiency of alkaline-surfactant-polymer (ASP) flooding technique, which is a proven tertiary recovery technology, to overcome scaling issues and other hindrances in its large-scale implementation. Appropriate materials and their suitable concentrations were selected to enhance the ASP flooding technique. Special surfactants from Indonesia were introduced to improve the interfacial tension reduction and wettability alteration. Reservoir rock model that resembling Langgak oilfield in Sumatra was utilized, and low-salinity water was employed to mimic the oilfield conditions. Starches derived from cassava nanoparticles (CSNPs) and purple yam nanoparticles (PYNPs) were combined separately with conventional hydrolyzed polyacrylamide (HPAM) polymer to enhance its performance. Sodium hydroxide and sodium carbonate were used as alkaline in final ASP formula. It was demonstrated from this research that only two combinations of ASP formulations have led to improved oil recovery. One combination utilizing PYNPs resulted in 39.17% progressive recovery, while the other combination incorporating CSNPs achieved 35% incremental oil recovery. The ASP combination that resulted in recovery rate of 39.17% was composed of sodium hydroxide (NaOH) at a concentration of 1.28 wt.%, PSC EOR 2.2 (0.98 wt.%), and a combined polymer consisting of HPAM (0.2 wt.%) and PYNPs nano-starch (0.6 wt.%). The second combination led to 35% recovery rate and involved NaOH also at concentration 1.28 wt.%, PSC HOMF (0.63 wt.%), and a combined polymer comprising from HPAM (0.2 wt.%) and CSNPs nano-starch (0.8 wt.%). These findings of this study highlighted the potential of this modified ASP flooding to enhance oil recovery in mature oilfields, thereby offering valuable insights for oil industry.
本研究旨在应对成熟油田在大量采油过程中面临的挑战。其重点在于提高碱-表面活性剂-聚合物（ASP）驱油技术的效率，这是一种经过验证的三次采油技术，旨在克服其大规模应用中的结垢问题和其他障碍。选择了合适的材料及其适宜的浓度来强化ASP驱油技术。引入了来自印度尼西亚的特种表面活性剂，以改善界面张力降低和润湿性改变。使用了类似于苏门答腊岛朗加克油田的油藏岩石模型，并采用低盐水来模拟油田条件。分别将木薯纳米颗粒（CSNPs）和紫山药纳米颗粒（PYNPs）衍生的淀粉与传统水解聚丙烯酰胺（HPAM）聚合物组合，以提高其性能。氢氧化钠和碳酸钠用作最终ASP配方中的碱。本研究表明，只有两种ASP配方组合提高了原油采收率。一种使用PYNPs的组合实现了39.17%的累进采收率，而另一种包含CSNPs的组合实现了35%的增量原油采收率。采收率为39.17%的ASP组合由浓度为1.28 wt.%的氢氧化钠（NaOH）、PSC EOR 2.2（0.98 wt.%）以及由HPAM（0.2 wt.%）和PYNPs纳米淀粉（0.6 wt.%）组成的复合聚合物构成。第二种组合的采收率为35%，同样包含浓度为1.28 wt.%的NaOH、PSC HOMF（0.63 wt.%）以及由HPAM（0.2 wt.%）和CSNPs纳米淀粉（0.8 wt.%）组成的复合聚合物。本研究的这些发现突出了这种改进的ASP驱油技术在提高成熟油田原油采收率方面的潜力，从而为石油行业提供了有价值的见解。
