济阳坳陷第一轮页岩油探井“失利”原因剖析  

Cause Analyses of“Failure”for First Round Shale Oil Exploration Wells in Jiyang Depression

作　　者：李志明[1,2,3,4] 孙中良 黎茂稳 曹婷婷[1,2,3,4] 李政 刘鹏[1,2,3,4] 蒋启贵 钱门辉[1,2,3,4] 陶国亮[1,2,3,4] Li Zhiming;Sun Zhongliang;Li Maowen;Cao Tingting;Li Zheng;Liu Peng;Jiang Qigui;Qian Menhui;Tao Guoliang(Wuxi Research Institute of Petroleum Geology,RIPEP,SINOPEC,Wuxi 214126,China;State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development,Wuxi 214126,China;State Energy Center for Shale Oil Research and Development,Wuxi 214126,China;SINOPEC Key Laboratory of Petroleum Accumulation Mechanisms,Wuxi 214126,China;Exploration and Development Research Institute of SINOPEC Shengli Oilfield Branch Company,Dongying 257015,China)

机构地区：[1]中国石化石油勘探开发研究院无锡石油地质研究所,江苏无锡214126 [2]页岩油气富集机理与有效开发国家重点实验室,江苏无锡214126 [3]国家能源页岩油研发中心,江苏无锡214126 [4]中国石化油气成藏重点实验室,江苏无锡214126 [5]中国石化胜利油田分公司勘探开发研究院,山东东营257015

出　　处：《地球科学》2023年第1期143-157,共15页Earth Science

基　　金：国家自然科学基金项目(No.42090022);中国石化科技开发部项目(No.P20049-1)。

摘　　要：济阳坳陷沙三下和沙四上亚段富有机质泥页岩层系页岩油形成条件优越,但第一轮页岩油勘探开发探索阶段实施的4口评价井和4口系统取心井在优选的“有利层段”进行试油试采均未获得规模突破.为了揭示济阳坳陷第一轮页岩油探井“失利”的原因,系统剖析了4口系统取心井取心段的含油性、储集性、可压性与页岩油可动性特征以及针对4口系统取心优选的“有利层段”和4口评价井实施的工程工艺技术情况.结果表明,NY1、LY1取心段含油性、储集性、可压性与页岩油可动性均好,优选的“有利层段”合理,而FY1和L69井取心段含油性、储集性和页岩油可动性较NY1、LY1取心段明显偏低并且优选的“有利层段”不正确.4口评价井“失利”主要原因是水平井段富有机质泥页岩成熟度低和压裂工艺适应性差;系统取心井NY1和LY1井优选“有利层段”“失利”主要与仅采用了常规油气试油试采工具进行联测有关,FY1和L69井优选“有利层”“失利”则既与“有利层”优选失误有关,也与仅采用了常规油气试油试采工具进行联测有关.The formation conditions of shale oil for the Lower Es3(Third Member of Shahejie Formation)and Upper Es4(Fourth Member of Shahejie Formation)Sub-member in Jiyang Depression,Bohai Bay Basin,are excellent,but none of the production test results of four evaluation wells and four system coring wells at preferred favorable layers reach the level of scale breakthrough.In order to reveal the causes of“failure”for the first round shale oil exploration wells in Jiyang Depression,the characteristics of oiliness,reservoir property,compressibility and mobility of shale oil for coring section of four system coring wells and the implementation of engineering technologies to preferred favorable layers of four system coring wells and four evaluation wells,are systematically analyzed.The results of this study show that the oiliness,reservoir property,compressibility and mobility of shale oil for coring section from wells NY1 and LY1 are all good and preferred favorable layers are reasonable,but the oiliness,reservoir property,and mobility of shale oil for coring section from wells FY1 and L69 are obviously lower than results of wells NY1 and LY1 and preferred favorable layers are incorrect.The main causes of“failure”for four evaluation wells are the maturity of shales rich in organic matter of horizontal intervals are low and the fracturing engineering technologies are poorly adaptable.The cause of“failure”for NY1 and LY1 of system coring wells at preferred favorable layer is mainly related to only conventional oil and gas test and production tools are used for joint measurement.The causes of“failure”for FY1 and L69 of system coring wells for preferred favorable layer are not only the preferred favorable layers are wrong,but also only conventional oil and gas test and production tools are used for joint measurement.

关 键 词：页岩油探井“ 四性”特征“ 有利层段”“ 失利” 济阳坳陷 石油地质学 

分 类 号：P618.13[天文地球—矿床学]