低渗透油气藏保护技术现状及发展趋势  

Situation and Development of Low Permeability Reservoir Protection Technology

作　　者：刘大伟[1] 蔡俊男 金经洋 姚秀浩 

机构地区：[1]广东石油化工学院石油工程学院,广东茂名525000

出　　处：《广东石油化工学院学报》2017年第4期6-9,13,共5页Journal of Guangdong University of Petrochemical Technology

基　　金：广东省自然科学基金(2016A030307024);广东省"扬帆计划"引进紧缺拔尖人才项目(917004);国家级大学生创新创业训练计划项目(201711656001);广东省大学生创新创业训练计划项目(201711656021;201711656022)

摘　　要：总结了低渗透储层地质特征、损害机理,综述了钻井完井及增产改造作业中的储层保护技术的发展和应用情况。指出:低渗透储层孔渗较低、孔喉半径小,裂缝和黏土矿物发育,以流体敏感、裂缝应力敏感及水相圈闭损害为主;屏蔽暂堵技术、成膜钻井液技术和欠平衡钻井技术相辅相成,保护储层效果好;研发提高固井二界面胶结质量的添加剂及钻井完井液,有利于提高固井质量并保护储层;防控压裂损害应从优化施工及返排工艺、研制低损害压裂液和解堵措施等方面着手;针对水平井、多分支水平井等特殊工艺井的低渗透油气藏保护技术及储层损害评价方法尚需完善。The paper summarizes the geologic characteristics, damaging mechanism of the low permeability reservoir, development and ap-plication of reservoir protection technology in drilling completion and stimulation operation. It points out that the low permeability reservoirs are characterized by heterogeneous nature fractures with strong stress sensitivity, low porosity, low permeability, short pore radius,a lot of clay minerals, strong fluids sensitivity and water phase trapping, and that the temporary shielding plugging technology, film forming drilling fluid technology and underbalanced drilling technology complement each other, which improves the effect of reservoir protection. In order to further improve the quality of cementing and protect reservoir, it is suggested in the paper that additives and drill - in fluids for improving the cementation quality of cement - formation interface, should be researched. It is also suggestive that the protection should start with opti-mizing construction and flow back technology, developing low damage fracturing fluid and plugging removal measures. The paper finally pints out that the low permeability reservoir formation damage control technique and evaluation method for horizontal well multi - branch hor-izontal well need to be improved.

关 键 词：低渗透 储层保护 水平井 完井 压裂 

分 类 号：TE258[石油与天然气工程—油气井工程]