摘要
大庆油田徐家围子深部地层的营城组和沙河子组发育有大量天然气资源,但这些层位属于砂砾岩、流纹岩等发育地层,研磨性强、地温梯度高,软硬地层交错,且地层胶结能力差,钻井中易发生漏失、井塌和钻井液性能恶化等情况,致使钻井周期在4个月以上。针对这种情况,大庆油田在井身结构设计、钻头优选、提速工具研制和钻井液处理剂合成等方面展开研究,最终形成了适用于大庆油田徐家围子深部地层的提速技术及配套工艺,使钻井速度大幅度提高,钻井周期比应用提速技术之前平均缩短37天以上,钻井成本节约15%以上,此外还节约了大量因处理井漏、井塌等事故而增加的钻井成本。提速技术及配套工艺的集成应用,为实现大庆油田深井提速、提质、降本增效的目标,提供了技术支撑。
Expanding exploration in daqing oil field camp deep strata of the city and shahe group development have a large number of natural gas resources,but these strata belong to glutenite,rhyolite,such as development strata,strong abrasive,high geothermal gradient,hard and soft formation,and the formation cementation ability is poor,easy leakage occurred in drilling,borehole collapse and drilling fluid performance degradation,such as complex,the drilling cycle in more than four months.For this case,the daqing oil field in well bore structure design,bit type,speed up tools development and drilling treating synthetic study,eventually formed the expanding deep Yu Daqing oil fields will be accelerated the formation of form a complete set of technology and craft,make greatly improve drilling speed,drilling cycle shortened more than 37 days on average than before application to speed up technology,drilling cost saving more than 15%,and also save a lot because of lost circulation,borehole collapse accident and increases the drilling cost,etc.The integrated application of the speed-increasing technology and related technology provides technical support for realizing the goal of accelerating,improving quality,lowering cost and increasing efficiency in deep Wells of daqing oilfield.
作者
权俊生
QUAN Junsheng(No.3 Drilling Company of Daqing Oilfield Drilling Engineering Company)
出处
《石油石化节能》
2019年第1期11-14,48,共5页
Energy Conservation in Petroleum & PetroChemical Industry
关键词
深井
高温
提速
液动旋冲
深层钻井
deep well
high temperature
Increase speed
Hydrodynamic flushing
deep drilling
