天然气钻井在川西地区的实践与认识

近年来，中国石油西南油气田分公司川西北气矿先后在川西地区平落19等5口井实施了天然气钻井，实践的数据和结果充分体现了天然气钻井的优越性，取得了良好的勘探效果，并创国内天然气钻井多项新水平。实践表明，天然气钻井是比较容易进行的，但必须具备一定的地质条件，而且要精心制定工艺流程并正确实施。通过几口井天然气钻井的实践，进一步加深了对天然气钻井的理解和认识，积累了不少经验，但同时也发现了几个应当引起重视和解决的技术问题：①天然气钻井开始时间的选择；②空气螺杆从何时开始使用；③终止天然气钻井时机的选择等。

PRACTICE AND KNOWLEDGE OF GAS DRILLING IN WEST SICHUAN AREA 1)

In recent years, Northwest Sichuan Gas Mine of PCL Southwest Branch, performed the gas drilling for 5 wells such as Well Pingluo 19 etc. in the west Sichuan area. The data and results indicate the advantages of gas drilling sufficiently. The good exploration fruits are achieved. And several new records of gas drilling are created in China. The practice shows the gas drilling is not difficult, but necessary geological conditions must exist for it to be done and the working process schedule must be made carefully and performed correctly.