前郭县深井子油页岩矿区松散层钻进护壁堵漏技术

Wall Protection and Leakage Stoppage for Loose Formation Drilling in Shenjingzi Oil Shale Mining Area

摘要:

针对前郭县深井子油页岩矿区个别钻孔松散层易坍塌、漏失的问题，及时采取措施，配制胶结性和抑制性能更好的以PVA为主的冲洗液体系，起到了很好的防塌护壁效果，同时利用锯末、花生皮等经济实用的惰性材料进行堵漏，降低了孔内事故率、降低了钻进成本、提高了台月效率，取得了较好的经济效益。

Abstract:

According to the collapsing and leakage in some individual borehole of Shengjingzi oil shale mining area in Jilin, taking PVA as main material, the flush fluid was prepared with better cementation and inhibition properties for collapsing prevention and wall protection. Economical and practical inert materials such as sawdust and peanut shell were used for leakage stoppage to lower the accident rate and drilling cost as well as improving the drilling efficiency.