石油科学通报2025，Vol.10Issue(4)：709-718,10.DOI:10.3969/j.issn.2096-1693.2025.02.021
基于钻井地质环境因素的页岩油气地层井眼轨迹优化控制技术
Shale oil and gas wellbore trajectory control technology based on drill-ing geological environmental factors
摘要
Abstract
The successful development of shale oil and gas formations mainly depends on engineering measures such as extended-reach horizontal drilling and high-volume fracturing,which enable high-quality geological sweet spots in long horizontal shale oil and gas formations to extract more industrial production capacity.Among them,drilling is the most effective and direct technical means to communicate engineering and geology.The drilling geological environment is a significant factor influencing the drilling engineering process,including both geological factors of the formation and the mutual influence factors between drilling environment and geological environment.In order to improve the high-quality sweet spot sweet-spot encounter rate,facilitate fracturing,and reduce engineering risks,this paper proposes wellbore trajectory optimization control technology for shale oil and gas formation production increase,safety,and efficiency.By analyzing the geological environmental factors of shale oil and gas formations,the models of geological sweet spot evaluation,geological risk identification,and geological engineering integration application have been formed.Based on these models,three drilling wellbore trajectory optimization control technologies have been proposed:① Control the horizontal drilling position according to the changes of geological sweet spots in the formation space,and form trajectory control technologies that optimize drilling encountering sweet spot layers and enhance initial production(IP)rates;② optimize the drilling direction based on the fracturing properties of engineering sweet spots,and trajectory direction optimization technology to improve the fracturing response characteristics of shale oil and gas formations;③ To mitigate drilling risks,trajectory control techniques are developed to ensure the safety of drilling in shale oil and gas formations and reduce drilling engineering risks.Wellbore trajectory optimization control technology is one of the key technologies for achieving geo-engineering integration,which improves the efficiency of fast drilling and completion of long horizontal wells and high-volume fracturing,as well as increase the sweet-spot encounter rate rate and development efficiency of geological sweet spots.关键词
页岩油气地层/钻井地质环境因素/地质甜点/井震融合/井眼轨迹Key words
shale oil and gas formations/drilling geological factors/geological sweet spot/well-seismic fusion/wellbore trajectory分类
能源科技引用本文复制引用
路保平,廖东良,袁多,刘江涛..基于钻井地质环境因素的页岩油气地层井眼轨迹优化控制技术[J].石油科学通报,2025,10(4):709-718,10.基金项目
国家自然科学基金项目(No.21427812、No.41474108)和中国石油化工股份有限公司科技攻关项目(P21116)联合资助 （No.21427812、No.41474108）
