摘要
黄页1井为中国石化华东分公司在贵州黄平区块部署的一口页岩气井。从该区块其他钻井资料揭露黄页1井上部地层为白云岩,中下部为碳质泥岩,地层研磨性较强,机械钻速低。同时地质构造复杂,地层缝、洞发育,钻进过程中易发生漏失。在现场钻井过程中,通过空气钻井及泡沫钻井的应用,对两种钻井技术在本区块的适应性进行了现场试验,在一定程度上获得了较高的机械钻速,同时较好地解决了井漏问题。为今后相同区块同类地层应用空气钻井技术提高机械钻速及防止漏失提供了宝贵的实践经验。
Huangye-1 well is a shale gas well deployed by East China Branch, SINOPEC in Huangping block of Guizhou. Conclu- sion can be made by analyzing the introductions of adjacent wells drilling data that there is dolomite in the upper strata and carbo- naceous mudstone in the lower formation. Dolomite and carbonaceous mudstone are hard so that ROP is lower. Meanwhile, serious lost circulation often occurs during drilling for the complex geological structure and the developing fracture. This paper analyzes the feasibility of air drilling and foam drilling through the practical application, and the field tests results and indicates that adopt- ing air drilling and foam drilling can increase drilling speed and solve a series of complicated downhole problems caused by lost cir- culation. The application of air drilling technology provides valuable experience for increasing ROP and preventing loss in the same block and formation in the future.
出处
《油气藏评价与开发》
2012年第4期76-80,共5页
Petroleum Reservoir Evaluation and Development
关键词
空气钻井
泡沫钻井
机械钻速
井漏
air drilling, foam drilling, ROP, lost circulation
