塔河油田碎屑岩油藏水平井新型冻胶堵剂研究

Study of new gel agent to plug horizontal well in clastic rock reservoir in Tahe Oilfield

何星 杨利萍 马淑芬

He Xing Yang Liping Ma Shufen

中国石油化工股份有限公司 西北油田分公司,乌鲁木齐 830011

SINOPEC Northwest Oilfield Company, Urumqi, Xinjiang 830011, China

为解决常规冻胶堵剂强度低、耐温耐盐差、成本高等问题，针对塔河油田高温高盐特点，引入有机冻胶与无机网络互穿技术，研发了具有较高强度的耐温耐盐新型冻胶体系。结果表明，该冻胶体系在温度为130 ℃、矿化度为20×104 mg/L地层水中能稳定90 d，有较强的封堵能力和耐冲刷能力。选取TK937H井开展了冻胶堵水现场试验，取得了较好增油效果，为塔河碎屑岩水平井堵水提供了新的途径。

The conventional gel plugging agents have some shortcomings such as low intensity, poor heat/ salt resistance and high cost. In view of high temperature and salinity in the Tahe Oilfield, the combination of organic gel and inorganic network is introduced, and a new gel plugging system with higher resistance for heat/ salt is set up. The new system remains stable for 90 days in formation water at the temperature of 130 ℃ and the salinity of 20×104 mg/ L, showing good capacities of plugging. It has been applied in well TK937H, raising oil product obviously.

https://doi.org/10.11781/sysydz2013S1125