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Comprehensive Investigation of Dynamic Characteristics of Amphoteric Surfactant-Sulfonated Polymer Solution on Carbonate Rocks in Reservoir Conditions.
ACS Omega ( IF 3.7 ) Pub Date : 2020-07-14 , DOI: 10.1021/acsomega.0c01690 Xianmin Zhou 1 , Muhammad Shahzad Kamal 1 , Alhasan B Fuseni 2
ACS Omega ( IF 3.7 ) Pub Date : 2020-07-14 , DOI: 10.1021/acsomega.0c01690 Xianmin Zhou 1 , Muhammad Shahzad Kamal 1 , Alhasan B Fuseni 2
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To recover the remaining oil after water flooding, amphoteric surfactant–sulfonated polymer (S-P) flooding has attracted attention as a tertiary oil recovery technique. Oil recovery by S-P flooding not only is influenced by reservoir heterogeneity but also depends on chemical adsorption and interactions of S-P solution with the surface of rocks. This paper presents comprehensive laboratory results related to the dynamic adsorption, resistance factor (RF), residual resistance factor (RRF), and adsorbed layer thickness of S-P solution on the surface of carbonate rocks. Three core flooding experiments were conducted. The S-P solution was composed of an amphoteric surfactant (0.2 wt %) and sulfonated polymer solution (0.2 wt %) in seawater. The S-P solution was injected until the effluent concentration reached the inlet concentration. Seawater was injected after S-P injection to displace S-P solution until the effluent concentration reduced to a minimum value or constant value for desorption study. Total organic carbon (TOC) and Hyamine methods were used to determine the adsorption of the polymer and surfactant, respectively. The individual amount of dynamic adsorption and the total amount of adsorption of S-P solution onto carbonate rock were determined and compared with the results of single adsorption of a surfactant solution published previously. The residual resistance factor, resistance factor, and adsorbed layer thickness of S-P solution on carbonate rocks were calculated based on the differential pressure before and after injecting the S-P solution. We found that the dynamic adsorption, RF, RRF, and adsorbed layer thickness of the S-P solution strongly depends on pore geometry or reservoir properties. Some of the relationships are proposed for the first time. The loss of injectivity and liquid permeability during S-P solution injection are evaluated in detail in this paper. This paper presents insights into the dynamic adsorption, residual resistance factor, resistance factor, adsorbed layer thickness, and injectivity of S-P solution on carbonate rocks with reservoir parameters, which could help in designing the chemical enhanced oil recovery process in carbonate reservoirs.
中文翻译：
储层条件下碳酸盐岩两性表面活性剂磺化聚合物溶液动力学特性的综合研究。
为了在注水后采收剩余的油，两性表面活性剂磺化聚合物（SP）注水作为三次采油技术引起了人们的关注。SP驱油的采收率不仅受储层非均质性的影响，而且还取决于SP溶液与岩石表面的化学吸附和相互作用。本文介绍了与碳酸盐岩石表面SP溶液的动态吸附，阻力系数（RF），残余阻力系数（RRF）和吸附层厚度有关的综合实验室结果。进行了三个岩心驱油实验。SP溶液由海水中的两性表面活性剂（0.2重量％）和磺化聚合物溶液（0.2重量％）组成。注入SP溶液，直到流出物浓度达到入口浓度。SP注入后注入海水以置换SP溶液，直到流出物浓度降低至最小值或恒定值以进行解吸研究。总有机碳（TOC）和Hyamine方法分别用于确定聚合物和表面活性剂的吸附。确定了单独的动态吸附量和SP溶液在碳酸盐岩石上的吸附总量，并将其与先前公开的表面活性剂溶液的单次吸附结果进行了比较。根据注入SP溶液前后的压差，计算SP溶液在碳酸盐岩上的残余电阻系数，电阻系数和吸附层厚度。我们发现动态吸附，RF，RRF，SP溶液的吸附层厚度在很大程度上取决于孔的几何形状或储层性质。其中一些关系是首次提出的。本文详细评估了SP溶液注入过程中注入性和液体渗透性的损失。本文介绍了具有储层参数的碳酸盐岩石上SP溶液的动态吸附，残余阻力系数，阻力系数，吸附层厚度和注入量，可帮助设计碳酸盐岩储层的化学强化采油工艺。
更新日期：2020-07-28
中文翻译：
储层条件下碳酸盐岩两性表面活性剂磺化聚合物溶液动力学特性的综合研究。
为了在注水后采收剩余的油，两性表面活性剂磺化聚合物（SP）注水作为三次采油技术引起了人们的关注。SP驱油的采收率不仅受储层非均质性的影响，而且还取决于SP溶液与岩石表面的化学吸附和相互作用。本文介绍了与碳酸盐岩石表面SP溶液的动态吸附，阻力系数（RF），残余阻力系数（RRF）和吸附层厚度有关的综合实验室结果。进行了三个岩心驱油实验。SP溶液由海水中的两性表面活性剂（0.2重量％）和磺化聚合物溶液（0.2重量％）组成。注入SP溶液，直到流出物浓度达到入口浓度。SP注入后注入海水以置换SP溶液，直到流出物浓度降低至最小值或恒定值以进行解吸研究。总有机碳（TOC）和Hyamine方法分别用于确定聚合物和表面活性剂的吸附。确定了单独的动态吸附量和SP溶液在碳酸盐岩石上的吸附总量，并将其与先前公开的表面活性剂溶液的单次吸附结果进行了比较。根据注入SP溶液前后的压差，计算SP溶液在碳酸盐岩上的残余电阻系数，电阻系数和吸附层厚度。我们发现动态吸附，RF，RRF，SP溶液的吸附层厚度在很大程度上取决于孔的几何形状或储层性质。其中一些关系是首次提出的。本文详细评估了SP溶液注入过程中注入性和液体渗透性的损失。本文介绍了具有储层参数的碳酸盐岩石上SP溶液的动态吸附，残余阻力系数，阻力系数，吸附层厚度和注入量，可帮助设计碳酸盐岩储层的化学强化采油工艺。
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