基于断面SGR下限值法探讨廊固地区断层相关圈闭内钻井含油气性
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  • 英文篇名:Study on the drilling oil-gas possibility in fault-related traps using the method of SGR lower limit in Langgu area
  • 作者:胡欣蕾 ; 王超 ; 吕延防 ; 付广 ; 曹兰柱 ; 杨德相
  • 英文作者:HU Xin-lei;WANG Chao;Lü Yan-fang;FU Guang;CAO Lan-zhu;YANG De-xiang;College of Earth Sciences,Northeast Petroleum University;Guangdong University of Petrochemical Technology;Exploration and Development Research Institute of PetroChina Huabei Oilfield Company;
  • 关键词:断层侧向封闭性 ; SGR下限值 ; 泥地比下限值 ; 断层相关圈闭 ; 含油气性 ; 廊固地区
  • 英文关键词:Fault lateral sealing ability;;Lower limit of SGR;;Lower limit of the thickness between mudstone and whole layer;;Fault-related trap;;Oil-gas possibility;;Langgu area
  • 中文刊名:DQWJ
  • 英文刊名:Progress in Geophysics
  • 机构:东北石油大学地球科学学院;广东石油化工学院;中国石油华北油田勘探开发研究院;
  • 出版日期:2018-11-02 11:37
  • 出版单位:地球物理学进展
  • 年:2019
  • 期:v.34;No.155
  • 基金:国家自然科学基金项目“碎屑岩地层中不同结构断层岩封闭能力定量评价”(41872153);“断层岩古泥质含量恢复及古侧向封闭能力定量评价”(41802138);; 中国石油科技重大专项“华北油田持续有效稳产勘探开发关键技术研究与应用”(2017E-15);; 广东石油化工学院科研基金“油气成藏期断层侧向运聚油气有利部位定量评价”(2018rc04);; 东北石油大学校级研究生创新科研项目“张性盆地碎屑岩沉积地层中断层油藏注水开发断层稳定性研究”(YJSCX2017-001NEPU)联合资助
  • 语种:中文;
  • 页:DQWJ201903022
  • 页数:9
  • CN:03
  • ISSN:11-2982/P
  • 分类号:195-203
摘要
为了准确评价廊固地区断层相关圈闭内钻井含油气性、完善油气成藏规律,基于断层侧向封闭的断面SGR下限值法,综合断层侧向封闭区泥地比下限值、断层控圈范围等资料确定断层侧向封闭与开启区域范围,在此基础上对断层相关圈闭内钻井含油气性与断层侧向封闭属性间的相互关系进行详细剖析,其结果表明:断层侧向封闭区是油气聚集成藏的有利部位,钻井含油气性相对较好;断层侧向开启区不利于油气聚集成藏,钻井含油气性相对较差.但在利用上述方法分析过程中存在多个"矛盾"井位,从地震、测井、岩心数据着手,综合断层相关圈闭内储盖组合及油源条件等成藏有利要素进行详细探讨:(1)受断层封闭烃柱高度较低、高部位断层不封闭、无油源断层供源、砂体连通性较差4种因素影响,在断层侧向封闭区内可钻遇不含油气的失利井;(2)受其他断层、自圈、不整合面遮挡3种因素影响,在断层侧向开启区内可钻遇含油气的成功井.
        To evaluate the drilling possibility of oil, gas or water in fault-related traps, as well as perfect the oil and gas accumulation law of Langgu area. Based on the evaluation method of SGR lower limit which could assess the lateral sealing ability of fault, and then combining the previous evaluation results, lower limit of the thickness ratio between mudstone and whole layer in sealing ranges, along with the fault controlled ranges, all these factors could determine the lateral sealing and opening ranges of fault. By detailed analyzing the relation between drilling possibility of oil, gas or water in fault-related traps with fault lateral sealing ability, the results indicated that: The lateral sealing properties of faults are in good agreement with the distribution law of oil and gas to a certain extent. More concretely, the ranges of fault lateral sealing are favorable for hydrocarbon accumulation, the drilling oil-gas possibility is relatively good and most of the wells encountered oil or gas layers. While the ranges of fault lateral opening are not conducive to hydrocarbon accumulation, the drilling oil-gas possibility is relatively poor and most of the wells only encountered water layers. In the process that analyzing by the above method, there exist many "contradictory" wells. The factors of reservoir-caprock combinations and source conditions in fault-related traps which obtained by seismic, logging, core and many other data might cause the evaluation bias that mentioned above. The results indicated that:(1) The failure wells without oil-gas in fault lateral sealing ranges are affected by the following conditions, such as the hydrocarbon column of the fault sealing is low and the testing layer is below the oil-water interface, the SGR value of fault near well site is very high but this fault is not sealed in the high position, no source supplied and the connectivity of the sand body is poor.(2) The success wells with oil-gas in fault lateral opening ranges are affected by other sealing fault, self-circle and unconformity.
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