深层气钻井完井液技术

针对东濮凹陷天然气藏储层特征,研究了保护天然气储层的钻井完井液体系.该体系表面张力低,滤失量低,流变性和润滑性好,抑制性强,高温下性能稳定,能有效降低水锁和水敏对储层造成的损害.经现场应用保护储层效果显著,钻井完井液性能优良,直接增加了单井油气产量,提高了天然气的勘探开发效率.

Deep-seated Gas Drilling Fluid and Completion Fluid Technology

According to oil and gas reserve layer character, mineral component of Zhongyuan Oilfield, latency damage factors to deep oil and gas layer were analyzed. Protected deep-seated gas drilling fluid and completion fluid was studied. This drilling fluid has lower filtrate, higher inhibition, stability high temperature and high pressure character, and reduce filtrate tensile force between filterer and layer gas, and depress water locking effect and water sensitivity effect, and reduce damage of drilling fluid to reserve layer. It has high infiltration ratio recovery value and low cost.