低渗砂岩油藏深度酸化技术研究  

Study on Deep Acidizing Technology of Low Permeability Sandstone Reservoir

作　　者：师静静[1] 黄新宇 陈栋[1] 李国勇 SHI Jing-jing;HUANG Xin-yu;CHEN Dong;LI Guo-yong(Xingzichuan Oil Production Plant of Yanchang Oilfield Co.,Ltd.,Yan'an 717400,China;Shaanxi Yanchang Petroleum Group Pipeline Transportation Company,Yan'an 716000,China)

机构地区：[1]延长油田股份有限公司杏子川采油厂,延安717400 [2]陕西延长石油(集团)有限责任公司管道运输公司,延安716000

出　　处：《当代化工》2021年第2期443-446,共4页Contemporary Chemical Industry

基　　金：国家科技重大专项,大型油气田及煤层气开发(项目编号:2017ZX05013)。

摘　　要：随着油田开发的深入,油井产量面临着衰减,以往大都采用酸化或者压裂的方式进行增产。近年来由于技术的不断提高,各大油田也在不断探索新的增产措施,酸压工艺技术的成熟度越来越高,新型高效深度酸化技术成为了重点研究方向。通过一系列的实验,探究了酸岩反应、酸液配方优选等问题,并将研究的成果应用到现场的油田作业中。运用多氢酸体系进行实验分析,获得了深度酸化处理效果,能够弥补土酸等砂岩储层酸化酸液体系的缺点。与此同时,低渗砂岩油藏深度酸化技术实施效果也受注水井地层参数影响,因此实际应用过程需要结合酸液体系和注水井储层情况。With the development of oilfield, the production of oil well is declining. In the past, acidizing or fracturing was used to increase production. In recent years, due to the continuous improvement of technology, new stimulation measures have been used in major oil fields, the maturity of acid fracturing technology is getting higher and higher, and the new efficient deep acidizing technology has become a key research direction. In this paper, through a series of experiments, the acid-rock reaction and the optimization of acid solution formula were explored, and the research results were applied to field operations. By using the multi hydrogen acid system for experimental analysis, the effect of deep acidizing treatment was obtained, which can make up for the shortcomings of acidizing acid system of sandstone reservoir such as earth acid. At the same time, the implementation effect of deep acidizing technology in low permeability sandstone reservoir is also affected by the formation parameters of water injection well. Therefore, the actual application process needs to combine the acid system and the conditions of water injection well reservoir.

关 键 词：低渗砂岩 酸化技术 深度酸化 酸液体系 

分 类 号：TE357[石油与天然气工程—油气田开发工程]