浅谈先导井在岩盐定向水平对接井中的应用

定向水平对接井技术在岩盐开采中已经得到广泛应用,但是很多时候,该技术在薄层岩盐实施中其质量却一直得不到保证,水平段钻穿底板、顶板的情况时候发生。先导井的实施,大大提高了水平对接井水平段在岩盐层中穿越的精度,减少了钻穿盐层顶、底板井身轨迹在岩层中穿越发生井下事故的几率。水平段施工能满足最大岩盐开采厚度的要求,延长水平对接井的开采寿命。

Brief Discussion on the Application of Pilot Shaft in the Directional Horizontal Docking Well of Rock Salt

Directional horizontal docking well technology is widely used in the rock salt exploitation.But in many cases,the implementation quality of this technology in the thin layer of rock salt can not be guaranteed.The roof and floor in the horizontal section are usually pierced through.The implementation of the pilot shaft greatly improves the puncture accuracy of the horizontal section of the horizontal docking well in the rock salt layer,which reduces the accident rate of drilling through the salt layer top and the chance of the base of well bore trajectory change under the well.The construction of horizontal section can meet the need of requirement of large rock salt mining thickness and extend the mining life of the horizontal docking well.