耐剪切聚合物调剖技术研究及应用  

Research and Application of Shear Resistant Polymer Profile Control Technology

作　　者：徐浩 李百莹 刘全刚 王宏申 赖南君[2] 唐雷[2] XV Hao;LI Bai-ying;LIU Quan-gang;WANG Hong-shen;LAI Nan-jun;TANG Lei(CNOOC Ener Tech-Drilling&Production Co.,Ltd.,Tianjin 300452,China;School of Chemistry and Chemical Engineering,Southwest Petroleum University,Chengdu Sichuan 610500,China)

机构地区：[1]中海油能源发展股份有限公司工程技术分公司,天津300452 [2]西南石油大学化学化工学院,四川成都610500

出　　处：《辽宁化工》2022年第4期549-552,共4页Liaoning Chemical Industry

摘　　要：渤海湾油田大多区块经过多年的开采,已经处于高含水阶段,在开发至高含水的阶段中也应用了各种各样的调剖手段,效果不一。主要问题之一是聚合物剪切损失黏度大,经过剪切后与交联体系一同注入地层,造成不成胶或成胶效果差,难以对中高孔渗进行有效封堵,造成调剖效果不好。基于此,采用耐剪切的聚合物,配合交联体系,有效的对水流优势通道进行封堵,从而改善油水流度比,进而扩大波及体积,提高剩余储量动用程度,提高了注水开发效果。2020年先后在渤海湾X油田进行了2口调剖试验井,呈现了良好的降水增油效果。After years of exploitation,most blocks of Bohai Bay oilfield have been in the stage of high water cut.Various profile control methods have been applied in the development stage of high water cut,their effects were different.One of the main problems was that the polymer had high shear viscosity loss.After shearing,it was injected into the formation together with the cross-linking system,resulting in no gelling or poor gelling effect.It was difficult to effectively block medium and high porosity and permeability,resulting in poor profile control effect.Based on this,the shear resistant polymer and crosslinking system were used to effectively block the dominant channel of water flow,so as to improve the oil-water mobility ratio,expand the swept volume,improve the production degree of remaining reserves and improve the effect of water injection development.In 2020,profile control tests in two wells were successively carried out in X oilfield of Bohai Bay,showing good effect of water cut decrease and oil increase.

关 键 词：黏度 耐剪切 调剖 试验 降水增油 

分 类 号：TE357.4[石油与天然气工程—油气田开发工程]