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首页» 过刊浏览» 2023» Vol.8» Issue(6) 707-723     DOI : 10.3969/j.issn.2096-1693.2023.06.066
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渤海湾盆地埕岛东斜坡断—砂组合样式及其对油气富集的控制作用
张在振, 曾溅辉, 廖文毫, 张本华, 王志伟, 武群虎, 崔虎旺, 乔俊程
1 中国石油大学( 北京) 地球科学学院,北京 102249 2 中国石化胜利油田分公司 海洋采油厂,东营 257237 3 中石化胜利油田分公司,东营 257000
Configuration types of fault-sand and its control on hydrocarbon accumulation in the East Slope of Chengdao, Bohai Bay Basin
ZHANG Zaizhen, ZENG Jianhui, LIAO Wenhao, ZHANG Benhua, WANG Zhiwei, WU Qunhu, CUI Huwang, QIAO Juncheng
1 College of Geosciences, China University of Petroleum-Beijing, Beijing 102249, China 2 Offshore Oil Production Plant, SINOPEC Shengli Oilfield Company, Dongying 257237, China 3 Shengli Oilfield Company, SINOPEC, Dongying 257000, China

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摘要  断层与砂体是埕岛东斜坡东营组主要的油气输导要素。为了探究断—砂组合输导条件控制下油气运移与富集规律,本文基于地震资料精细解释和砂体RMS属性分析,首先划分了埕岛东斜坡东营组的断—砂组合样式,然后应用砂岩输导层相对输导指数RTi、断层侧向输导指数FLSI对断—砂组合输导性进行了定量评价,最后结合HMIE指数和Trinity油气运移数值模拟,分析了断—砂组合样式对油气运聚成藏的控制作用。研究表明,埕岛东斜坡断—砂组合样式可以划分为顺向型、反向型和主次复合型3 大类。断—砂组合对油气富集的控制作用主要体现在:① 断—砂组合输导性控制了油气运聚范围、层位及规模。当RTi > 0.15 时,斜坡区油气的聚集程度与RTi成正相关,当FLSI≥0.45 时,断阶区油气易侧向封堵成藏;② 断—砂组合的多样性、通源性及输导性控制了油气优势运移路径。研究区主要存在由洼陷区向胜海10 南断层附近,向胜海8 南断层附近以及向断阶区的3 条优势运移路径;③ 顺向型主要起阶梯式输导油气作用,反向型易侧向封堵油气成藏,主次复合型则对油气起着先分流再富集的作用。不同断—砂组合样式控制了油气富集模式,具有“分区控制、垂向分异、多层富集”的成藏特征。
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关键词 : 断—砂组合,输导性,油气富集,成藏模式,埕岛东斜坡
Abstract

Faults and sand bodies are the main transport elements of hydrocarbon migration of the Dongying Formation in the East Slope of Chengdao. In order to explore the mechanism of hydrocarbon migration and accumulation under the control of fault-sand configuration transportation conditions, the types of fault-sand configuration of the Dongying Formation in the East Slope of Chengdao are first divided based on the precise interpretation of seismic data and RMS attribute analysis of sand body. The fault-sand configuration transport properties are quantitatively evaluated by using the relative transport index of the sandstone transport layer RTi and fault lateral conductivity index FLSI indices. The control effect of different types of fault-sand configuration on hydrocarbon migration and accumulation was then analyzed with the HMIE index and Trinity hydrocarbon migration numerical simulation. The results show that the fault-sand configuration in the East Slope of Chengdao can be divided into three types, forward configuration of fault-sand, reverse configuration of fault-sand and compounds of primary faults and secondary faults configuration of fault-sand according to the spatial superposition relationship between faults and sand bodies. The controlling effect of fault-sand configuration on hydrocarbon accumulation is mainly reflected in the following aspects: (1) Control the area of hydrocarbon migration and accumulation; the hydrocarbon migration and accumulation was controlled by transportation conductivity of fault-sand configuration when RTi > 0.15, RTi are positively associated with the degree of hydrocarbon accumulation on the slope region, hydrocarbons are easily sealed laterally to form reservoirs on the fault terrace zone when FLSI≥0.45. (2) Control the dominant migration path of hydrocarbon; the types, the communicating effectiveness with the source rock and transport capacity of fault-sand configuration determine the dominant migration paths of hydrocarbon. The HMIE index and Trinity simulation analysis show that there are three dominant migration paths, namely, the depression area towards the fault belt of southern Shenghai 10, the depression area towards the fault belt of southern Shenghai 8, and the depression area belt towards the fault terrace area. (3) Control the distribution and accumulation of hydrocarbon; The forward configuration of fault-sand mainly plays the role of stepping hydrocarbon transport, the reverse configuration of fault-sand type can block hydrocarbon accumulation laterally, and the compounds of primary faults and secondary faults configuration of fault-sand plays the role of diverting hydrocarbon first and then enriching it. Different types of fault-sand configuration control the hydrocarbon accumulation pattern, which has the characteristics of “zonal control, vertical differentiation and multi-layer system enrichment”.


Key words: fault-sand configuration, transport capacity, hydrocarbon accumulation, hydrocarbon accumulation mode, East Slope of Chengdao
收稿日期: 2023-12-29     
PACS:    
基金资助:国家自然科学基金(41972147) 资助
通讯作者: zengjh@cup.edu.cn
引用本文:   
张在振, 曾溅辉, 廖文毫, 张本华, 王志伟, 武群虎, 崔虎旺, 乔俊程. 渤海湾盆地埕岛东斜坡断—砂组合样式及其对油气富集的控 制作用. 石油科学通报, 2023, 06: 707-723 ZHANG Zaizhen, ZENG Jianhui, LIAO Wenhao, ZHANG Benhua, WANG Zhiwei, WU Qunhu, CUI Huwang, QIAO Juncheng. Configuration types of fault-sand and its control on hydrocarbon accumulation in the East Slope of Chengdao, Bohai Bay Basin. Petroleum Science Bulletin, 2023, 05: 707-723.
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