松辽盆地深井钻井技术难点与对策  

The Drilling Problem and Countermeasures of Deep Wells in Songliao Basin

作　　者：陈安明[1] 张进双[2] 白彬珍[2] 陈天成[2] 

机构地区：[1]中国石化华东石油局钻井工程公司,江苏镇江212003 [2]中国石化石油工程技术研究院,北京100101

出　　处：《石油钻探技术》2011年第4期119-122,共4页Petroleum Drilling Techniques

摘　　要：东北松辽盆地长岭断陷天然气资源丰富,火山岩发育,分布范围广,具有巨大的油气藏勘探开发潜力。该地区地质条件复杂,井壁稳定问题突出,深部地层研磨性强,可钻性差,机械钻速慢,钻井周期长,储层流体富含二氧化碳。为加快该地区的钻探进程,解决制约钻井提速的技术难题,分析了前期探井钻完井资料,明确了钻井过程出现的主要井下故障。通过钻井地质环境因素分析,系统分析了该地区的地层压力体系、地层岩石可钻性和地层岩石力学参数,为钻井工程设计、钻头选型和个性化设计、现场施工提供了科学的参考依据。通过采取优化井身结构、分层优选高效钻头、应用保护储层钻井液、试验应用钻井新技术等技术措施,该地区深井机械钻速得到了大幅度提高,达到了优质、快速、高效成井的目的。The Changling fault depression,located at Songliao Basin in Northeast China with rich volcanic rocks distributed widely,has abundant natural gas source,it has a promising potential of oil ＆ gas exploration. But the geological condition is very complex, including unstable wellbore, high formation abrasion,poor rock drillability, slow ROP, long drilling period and excessive CO2 in the reservior. In order to speed up the exploring process and resolve the drilling problems which restrict the drilling rate of penetration,this paper analysed the early drilling and completion data and makes downhole complexities known clearly. Through the comprehensive research of the drilling geological environment, the formation pressure system, the rock drillability and the stratum mechanics profile, the scientific foundation for designing wells, selecting the bit types, operating at location has been laid. The paper presents some technical measures to optimize casing program, choose high efficiency bits, conserve the reservior with drilling fluids, test and promote the new drilling technologies. By adopting these measures, the wells can be drilled with high quality,high rate of penetration and high efficiency in this area.

关 键 词：深井钻井 火山岩 松辽盆地 井身结构 防止地层损害 

分 类 号：TE245[石油与天然气工程—油气井工程]