摘要
为解决新疆油田中拐凸起探井机械钻速慢、钻井周期长等问题,对完钻井的钻井、录井、测井和试油等资料进行分析,提出了探井钻井提速增效技术。应用完钻井的测井资料,开展了岩石力学特性研究并优选钻头;提高了钻井液中抑制剂、包被剂和沥青质材料的含量,并添加了随钻堵漏剂和胶凝剂,提高了钻井液的抑制性、封堵防塌性和防漏能力;根据地层承压能力和井壁稳定情况,确定了完井开次。中拐凸起7口探井由三开井身结构优化为二开井身结构,平均机械钻速提高了48.07%,月平均进尺提高了40.69%,累计降低钻井成本1 956万元。探井钻井提速增效技术为新疆油田中拐凸起高效勘探开发奠定了基础,也为类似区块的钻井施工提供了技术参考。
In order to improve ROP and economic benefit in Zhongguai uplift block ,a new technique was worked out by analyzing the data of drilling ,mud logging ,logging and well testing etc .from offset wells .According to the logging data from offset wells ,rock mechanics has been studied and drilling bit has been optimized .Content of inhibitor ,capsuling agent and asphalt materials was increased in drilling fluids , and LCM and gelling agent were also added to raise the capability of inhibition ,anti‐caving and curing los‐ses .Based on the formation fracturing pressure and the wellbore stability ,the well profile and casing pro‐gram can be determined .Casing program of 7 exploration wells was changed from three phases into two phases ,the average ROP was increased by 48 .07% ,and average monthly drilling footage was increased by 40 .69% ,drilling cost was saved up to RMB 19 .56 million .Application of the technique for improving ROP has laid a foundation for high efficiently exploration and development in Zhoingguai uplift block ,and provided a good technical reference for exploration in other similar oilfields .
出处
《石油钻探技术》
CAS
CSCD
北大核心
2015年第2期14-18,共5页
Petroleum Drilling Techniques
关键词
中拐凸起
探井
井身结构
机械钻速
新疆油田
Zhongguai uplift
exploratory well
casing program
penetration rate
Xinjiang Oilfield
