宣页1井钻井技术难点及对策  

Drilling Technical Difficulties and Countermeasures in Well Xuanye 1

作　　者：沈建中[1] 

机构地区：[1]中国石化华东石油局工程技术设计研究院,江苏南京210031

出　　处：《石油钻探技术》2011年第3期41-45,共5页Petroleum Drilling Techniques

摘　　要：宣页1井是一口页岩气探井,该井完钻井深2848 m,主要钻遇奥陶系、寒武系等中古生界地层,地层岩性致密,可钻性差,地层倾角大,钻进中遇到许多困难。为此,采取了井身结构优化、优化钻井液性能、钻头优选、优化取心技术及防斜技术措施、应用水力脉冲射流和复合钻进技术等针对性措施,保证了该井的顺利完钻,并大大提高了机械钻速。简单介绍了宣页1井的概况,指出了该井的钻井技术难点,详细介绍了所采取的主要技术措施。Well Xuanye 1 ,an exploratory shale Mesozoic and countered due gas well with completion depth of 2 848 m,penetrated Paleozoic stratum of Ordovician and Cambrian system. A lot of drilling difficulties were en to tight formation, poor drillability and large formation d sure smooth drilling. Drill bit optimization and fast drilling technology rate of penetration. A brief introduction of Well Xuanye drilling technical measures were detailed,including well ip. Many obtained measures were used to en good results in improving 1 and the drilling difficulties were introduced. The structure optimization, drilling fluid optimization, bit selection, coring, deviation control, hydraulic pulsed cavitations jet assistant drilling and combination drilling. The application analysis indicated that these measures can solve the problem encountered in drill ing and results are good.

关 键 词：页岩气井身结构钻井液机械钻速宣页1井 

分 类 号：TE242[石油与天然气工程—油气井工程]