西南石油大学学报（自然科学版）2024，Vol.46Issue(3)：37-49,13.DOI:10.11885/j.issn.1674-5086.2022.08.17.01
深层页岩气水平井双层靶体优选及效益评估
Optimization of Double-layer Targets and Benefit Evaluation for Deep Shale Gas Horizontal Wells
摘要
Abstract
The deep(＞3 500 m)shale gas is enriched in Wufeng Formation-Longmaxi Formation in Luzhou Area,southern Sichuan.In order to ensure the goal of increasing and stable production of shale gas,it is necessary to realize the three-dimensional production of L1 submember shale gas.The data of core,logging and production are used to study the reservoir characteristics,quantitative evaluation of reservoir quality and simulation of fracturing height of deep shale gas formations in the study area.Combining with quantitative evaluation of reservoir quality and simulation of fracturing height,an intelligent optimization and benefit evaluation method of double-layer targets for deep shale gas horizontal wells is established.The results show that:1)the overall physical properties of Long-1 subsection become worse from deep to shallow,L11—L31 layer is dominated by first-class desserts,and L41 layer is dominated by second-class sweet spot,with a thickness of more than 40 meters;2)the intelligent optimization method of horizontal well target in deep shale gas reservoir can quickly obtain two sets of information such as optimal depth,sweet spot quality,fracturing height and target benefit evaluation(Q)of horizontal well;3)the plane dominant area of the first set of target benefit evaluation is consistent with the current high production well area,considering the target benefit evaluation Q value of L41 small layer and the actual production of the second set of target horizontal wells that have been established,we predicted that the second set of targets in the deep shale gas reservoir in southern Sichuan has a certain development value and potential,and defined the dominant areas on the two sets of target planes.The study provides a basis for large-scale realization and production prediction of double-layer targets in deep shale gas reservoirs.关键词
深层页岩气/双层靶体/水平井/储层品质/压裂高度/靶体优选Key words
deep shale gas/double-layer target/horizontal well/reservoir quality/fracturing height/target selection分类
能源科技引用本文复制引用
罗静超,闫建平,石学文,钟光海,郑马嘉..深层页岩气水平井双层靶体优选及效益评估[J].西南石油大学学报（自然科学版）,2024,46(3):37-49,13.基金项目
国家自然科学基金(42372177) （42372177）
四川省自然科学基金(2022NSFSC0287) （2022NSFSC0287）
中国石油-西南石油大学创新联合体科技合作项目(2020CX020000) （2020CX020000）
中国石油科技部"十四五"重大专项(2021DJ1901) （2021DJ1901）
高等学校学科创新引智计划(111计划)(D18016) （111计划）
