碳酸盐岩高温储层自生酸体系研发与评价  

Development and evaluation of authigenic acid system in high-temperature carbonate reservoirs

作　　者：徐志鹏 夏亚文 苏徐航 韩子昭 齐宁[1] XU Zhi-peng;XIA Ya-wen;SU Xu-hang;HAN Zi-zhao;QI Ning(College of Petroleum Engineering,China University of Petroleum(East China),Qingdao 266580,China;Langfang Branch of China Petroleum Exploration and Development Research Institute,Langfang 065007,China)

机构地区：[1]中国石油大学(华东)石油工程学院,山东青岛266580 [2]中国石油勘探开发研究院廊坊分院,河北廊坊065007

出　　处：《应用化工》2021年第9期2344-2347,共4页Applied Chemical Industry

基　　金：国家重大科技专项(2017ZX005030005);国家自然科学基金(51874336)。

摘　　要：采用卤盐、羰基化合物和酯类研制了一种在高温下稳定持续生酸的自生酸体系。该自生酸体系90℃下反应6 h,可生成12.9%的盐酸,150℃下反应6 h,可生成18.9%的盐酸,具有优良的生酸能力。将盐酸、稠化酸和自生酸分别与岩心进行静态溶蚀实验,自生酸相比于常规酸具有更长的酸岩反应作用时间。自生酸体系150℃下,N80钢片腐蚀速度为0.984 g/(m^(2)·h),低于行业一级标准,具有优良的缓蚀性能。盐酸、自生酸与碳酸盐岩的酸岩反应动力学研究表明,自生酸酸岩反应速度与常规酸相差一个数量级,具有更为优良的缓速性能,能够用于解决高温储层深部酸化的难题。An authigenic acid system with the performance of stable and continuous acid generation at high temperature was developed with halide salt,carbonyl compounds and esters.The authigenic acid system provides the excellent acid generation performance,with 12.9%hydrochloric acid generated after reaction at 90℃for 6 h and 18.9%hydrochloric acid generated after reaction at 150℃for 6 h.Comparison of hydrochloric acid,viscous acid and authigenic acid by experiments of static corrosion in rock cores shows the longer acid-rock reaction time of the authigenic acid than that of the conventional acids.At 150℃,N80 steel sheet is corroded in the authigenic acid system at the rate of 0.984 g/(m^(2)·h),which is lower than the industrial first-class standard and indicates excellent corrosion inhibition performance.The acid-rock reaction kinetic of hydrochloric acid,authigenic acid in the carbonate rocks shows that the authigenic acid has the acid-rock reaction rate which is an order of magnitude lower than that of the conventional acid and has the better retardation performance,and it can be used to solve the difficulties in the deep acidizing of high-temperature reservoirs.

关 键 词：自生酸 深部酸化 碳酸盐岩 高温储层 酸岩反应 

分 类 号：TQ215[化学工程—有机化工]