火成岩地层井壁稳定技术研究进展

Advances of the Igneous Wellbore Stability Technique

介绍火成岩地层井下复杂情况;分析影响火成岩地层失稳的地质因素、力学因素、钻井液物理化学因素、钻柱振动等工程因素;将岩石力学理论与钻井液化学相结合,用以评价地层在钻井液作用前后对坍塌压力的影响,开展影响火成岩地层失稳因素的深入分析。

This paper presents instable problem of igneous formation, analyzes such project coefficient as geology factors, mechanics, physical chemical factor of drilling fluid, and drilling string vibration which affect the destabilization of igneous rock. And then it proposes that rock mechanic theory in conjunction with drilling fluid chemical property as a combination to estimate the effect of drilling fluid on collapse pressure, develops further analysis on the erratic factors of igneous rock formation.