通地-1井绳索取心钻探施工技术

Application of wire-line coring technology in Well Tongdi-1

摘要:

近年来，小口径岩心钻探技术在油气勘探中得到了广泛应用，施工中经常遇到钻孔超径孔内事故多发、孔斜超差孔底位移较大、冲洗液性能不稳定等问题。利用小口径绳索取心钻探技术施工通地-1井油田地质调查孔，通过优化钻进参数、合理确定钻孔结构、采取有效防止孔斜措施等技术手段，顺利完成钻孔施工任务，钻孔各项指标均达到了地质设计要求。

关键词:绳索取心钻进;地质调查孔;油气勘探;冲洗液;钻机;防止孔斜

Abstract:

In recent years, the small-diameter coring technology has been widely used in oil and gas exploration. Incidents often happen in the hole during drilling, such as frequent wellbore overcut, large displacement due to high deviation at the bottom of the hole, unstable drilling fluid performance. The small-diameter coring technique was used to drill the geological survey hole of Well Tongdi-1 for oil and gas, and it was successfully completed with all drilling indicators meeting the geological design requirements through optimizing drilling parameters, properly determining the drilling structure, and adopting effective measures to prevent hole deviation.

Key words:wire-line coring; geological survey hole; oil and gas exploration; drilling fluid; drilling rig; deviation prevention