杏南油田注聚井堵塞原因及解堵剂配方研究  

Blockage Reason of Polymer Injection Wells in Xingnan Oilfield and Determination of the Plug Removal Agent Formula

作　　者：曹广胜[1] 李春成[1] 王婷婷[1] 王桂龙[1] 张先强[1] 

机构地区：[1]东北石油大学石油工程学院,黑龙江大庆163318

出　　处：《石油化工高等学校学报》2016年第2期32-36,共5页Journal of Petrochemical Universities

基　　金：黑龙江省自然科学基金重点项目"活性原油在非均质储层中的自适应控水增油机理"(51574089)

摘　　要：针对杏南油田注聚井堵塞情况日益严重、注入压力升高及注聚效果变差的现状,采用杏南油田某区块聚合物及水样,进行了模拟现场注聚和堵塞的室内实验,得出了注聚井堵塞原因。结果表明,聚合物及机械杂质是造成储层孔隙堵塞的主要因素,且储层渗透率越低堵塞情况越严重。针对堵塞原因进行了解堵剂配方的室内实验研究,最终确定出A、B和C 3种药剂组合而成的多元降解剂,在优化每种药剂的质量分数、注入排量和注入顺序的基础上,该解堵剂配方可使储层解堵率达到102.41%~124.77%。According to the problems of that the serious blockage of polymer injection wells,the high injection pressure and the bad effect of polymer injection in Xingnan oilfield,the polymer and water of a block in Xingnan oilfield was adopted to carry out the laboratory experiments on simulation of polymer flooding and plugging and then the reason of blockage was found out.The results show that the polymer and mechanical impurities are the main factors to cause the pore blockage,and the lower the permeability,the more serious the blockage.Aiming at the blockage reason,laboratory experiment study on the formula of plug removal agent was carried out.Finally the multiple plug removal agent consists of agent A,B and C was determined.On the basis of optimizing the mass fraction of each agent,the injection volume and the injection order,the broken down rate of formations can reach 102.41%~124.77% with this plugging removal agent formula.

关 键 词：聚合物 注聚井 注入压力 堵塞 解堵剂 

分 类 号：TE39[石油与天然气工程—油气田开发工程]