地质勘探套管钻进技术研究

Study on Casing Drilling Technology for Geological Exploration

摘要:

针对复杂地层钻探，基于绳索取心钻进原理，采用不提钻换钻头取心钻进方法，开展地质勘探套管钻进新方法研究，包括套管取心钻具、代替绳索取心钻杆使用的套管，护壁措施、套管钻进工艺等，野外生产试验取得了较好的技术经济效果，并根据存在问题提出了进一步完善的建议。

Abstract:

According to the drilling in complex formations and based on the principle of wire-line drilling, the study on new methods for casing drilling for geological exploration are made by using coring drilling with retractable bit without lifting, including casing coring tools, casing replacing wire-line coring tube, wall protection and casing drilling processing. Good technical and economic effects are achieved in the field production test, and further improving suggestions are put forward according to the existing problems.