| 辽东湾地区锦州25—1油田油气成藏特点和运聚模拟研究 |
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| 引用本文： | 祝春荣,韦阿娟,沈东义.辽东湾地区锦州25—1油田油气成藏特点和运聚模拟研究[J].海洋地质译丛,2011(3):17-22. |
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| 作者姓名： | 祝春荣 韦阿娟 沈东义 |
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| 作者单位： | 中海石油（中国）有限公司天津分公司勘探开发研究院,天津塘沽300452 |
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| 摘 要： | 在对构造演化、成藏要素、油源对比、成藏期次分析的基础上，结合Trinity油气运移成藏模拟分析软件对锦州25—1油田的油气运聚模拟研究，分析了形成锦州25—1油田的成藏主控因素，建立了其成藏模式，指出了该地区有利勘探方向。模拟分析结果表明，锦州25—1构造是辽西凹陷沙三段烃源岩生成油气运聚的有利指向区，而优良成藏要素的优势时空配置则是形成锦州25—1油田的关键因素。其成藏模式为：辽西凹陷沙三段烃源岩在东下段时期进入了大量生排烃期，生成的油气为一期充注，充注时间发生在东营组末期，沿东下段时期强烈构造运动伴生的断裂系统、沙二段广泛发育的砂体、沙二段与沙三段之间大型不整合面以及古构造脊所构成的疏导体系运移至沙二段圈闭成藏，而沙三段砂体则可以近源优势成藏。辽西凹陷西斜坡、凹中隆以及古构造脊是今后较为有利的勘探区域。
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| 关 键 词： | 辽东湾 锦州25—1油田 油气成藏 运聚模拟 成藏模式 |
Pooling characteristics and hydrocarbon migration and accumulation modeling research in JZ25 - 1 oilfield in Liaodongwan area |
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| Authors: | ZHU Chunrong WEI A＇ juan SHEN Dongyi |
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| Institution: | ( Exploration and Development Research Institute of Tianjin Branch of CNOOC Ltd Tanggu Tianjin 300452, China ) |
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| Abstract: | Based on analysis of tectonic evolution, accumulation elements, source rock, hydrocarbon source correlation and accumulation timing, by using software ＂Trinity＂ of migration and accumulation modeling, main controlling factors of oil/gas forming in JZ25 - 1 oilfield were analyzed, model of hydrocarbon＇ s migration and accumulation has been established, and favorable exploration direction was pointed out. According to this model, JZ25 - 1 structure is a favorable structure where hydrocarbon generated from source rock of E2s3 in Liaoxi sag accumulated. And the key factor of formation of JZ25 - 1 oilfield is predominant space-time configuration of reservoir elements. During late Dongying period, oil generated from source rock of E2s3 and migrated through associated fault system of intensive tectonic movement, widespread sand body, large unconformity surface between E3s2 and E2s3, palaeotectonic ridge to traps of E3s2 in JZ25 - 1 oilfield. Sand body of E2s3 can be charged with hydrocarbon generated by close source rock of E2s3. In this area, western slope of Liaoxi sag, uplift in Liaoxi sag and paleo-ridge of structure are beneficial area of exploration. |
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| Keywords: | Liaodongwan area J Z25- 1 oilfield hydrocarbon accumulation migration and accumulation modeling hydrocarbon forming model |
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