广谱“油膜”暂堵剂在油层保护技术中的应用  

Application of a Broad-spectrum Oil-film Temporary Plugging Agent to Reservoir Protection

作　　者：蒋官澄[1] 马先平[2] 纪朝凤[2] 高树新[3] 

机构地区：[1]中国石油大学石油工程学院,东营257061 [2]中国石油天然气总公司大港油田分公司采油工艺研究院 [3]中国石化胜利油田分公司胜利采油厂

出　　处：《应用化学》2007年第6期665-669,共5页Chinese Journal of Applied Chemistry

基　　金：中国石油天然气集团公司重点项目(2001-9-14)

摘　　要：针对油层非均质性强、孔径分布范围较宽、油层孔径难以准确预知，常规屏蔽暂堵技术几乎无法实现对整个油层井段的保护、油层保护效果差等特点，设计了广谱“油膜”暂堵型保护油层钻井完井液体系，并进行了室内系统评价和现场应用。结果表明，当广谱“油膜”暂堵剂GPJ的加量达到3％时，可在近井壁处形成很好的屏蔽暂堵“油膜”带，渗透率堵塞率和恢复率皆大于90％，与常规屏蔽暂堵技术相比，可使油层损害程度降低7．4—10倍，产量提高1．82—2．96倍，而且与油层渗透率和温度无关。In view of the reservoir characters of severe heterogeneity, wide pore radius distribution, unpredictability of pore radius, and unrealized protection for whole hole section and bad protection effect by conventional shielding temporary plugging technology, we designed a broad spectrum oil film temporary plugging drilling and completion fluid system for reservoir protection. The in-house system evaluation and field application showed that an excellent oil film for shielding temporary plugging could be formed near borehole wall and both plugging and recovering rates of permeability reached more than 90% when the added amount of the broad spectrum oil film temporary plugging agent GPJ reached 3% ; skin factor decreased by 7.4 to 10 times and production increased by 1.82 to 2. 96 times compared with conventional technology.

关 键 词：油膜 广谱 暂堵 油层保护 钻井完井液 体系设计 

分 类 号：O647.3[理学—物理化学] O647.4[理学—化学]