Characteristics and distribution law of hydrocarbon accumulation in Kuqa foreland basin

doi:10.7623/syxb201504001

Acta Petrolei Sinica ›› 2015, Vol. 36 ›› Issue (4): 395-404.DOI: 10.7623/syxb201504001

• Petroleum Exploration • Next Articles

Characteristics and distribution law of hydrocarbon accumulation in Kuqa foreland basin

Zhao Mengjun¹, Lu Xuesong¹, Zhuo Qingong¹, Li Yong², Song Yan¹, Lei Ganglin², Wang Yuan²

1. PetroChina Research Institute of Petroleum Exploration & Development, CNPC Key Laboratory of Basin Structure and Hydrocarbon Accumulation, Beijing 100083, China;
2. Research Institute of Petroleum Exploration & Development, PetroChina Tarim Oilfield Company, Xinjiang Korla 841000, China

Received:2014-10-28 Revised:2015-01-26 Online:2015-04-25 Published:2015-04-04

库车前陆盆地油气成藏特征与分布规律

赵孟军¹, 鲁雪松¹, 卓勤功¹, 李勇², 宋岩¹, 雷刚林², 王媛²

1. 中国石油勘探开发研究院中国石油天然气集团公司盆地构造与油气成藏重点实验室北京 100083;
2. 中国石油塔里木油田分公司勘探开发研究院新疆库尔勒 841000

通讯作者: 赵孟军,男,1965年4月生,1988年获长春地质学院学士学位,1994年获中国石油勘探开发研究院博士学位,现任中国石油勘探开发研究院石油地质实验研究中心副主任、教授级高级工程师,主要从事油气成藏综合研究。Email:zmj@petrochina.com.cn
作者简介:赵孟军,男,1965年4月生,1988年获长春地质学院学士学位,1994年获中国石油勘探开发研究院博士学位,现任中国石油勘探开发研究院石油地质实验研究中心副主任、教授级高级工程师,主要从事油气成藏综合研究。Email:zmj@petrochina.com.cn
基金资助:
国家重大科技专项(2011ZX05003)和中国石油天然气集团公司科技开发项目(2011-B0403)资助。

Abstract

Abstract:

At present, Kuqa foreland basin has the highest degree of prospecting and attracts the most attention from researchers in China. Based on the deep understanding of accumulation condition and process, the oil and gas distribution law was systematically analyzed and summarized: (1) Horizontally, dry gas mainly exists in the central segment of Kelasu tectonic belt, while condensate gas and oil reservoirs gradually appear from this center to the north and south sides, and to the east and west ends; (2) Vertically, taking the tertiary salt-bearing strata and mudstone in Jurassic coal measures as two sets of regional cap rocks, it can be divided into three sets of reservoir-forming combinations, i.e., the supra-salt, sub-salt,and deep layer combination. Among them, Cretaceous combination under the salt-bearing strata is the main exploration domain for natural gas; (3) From south to north, the reservoir type, hydrocarbon phase state, accumulation time in different tectonic belts are shown as ordered time-space aggregation; (4) From east to west, there are certain differences in tectonic characteristics, reservoir types, hydrocarbon accumulation characteristics and resource potential between various segments, and rich hydrocarbon is found in the middle segment. Based on the analysis of hydrocarbon accumulation law and distribution characteristics, an integrated orderly accumulation model is established for both conventional petroleum and unconventional tight oil and gas in Kuqa foreland basin, which is useful to further recognize the hydrocarbon distribution law and favorable exploration domains.

Key words: accumulation condition, accumulation process, distribution law, reservoir-forming combination, orderly accumulation, Kuqa foreland basin

摘要：

库车前陆盆地是中国目前油气勘探程度和研究程度最高的前陆盆地。在深入认识库车前陆盆地油气成藏条件和油气聚集过程的基础上,总结了库车前陆盆地的油气分布规律:①平面上,油气相态在克拉苏构造带中部以干气为主,以此为中心向南、北两侧及东、西两端渐变为凝析气、油藏;②垂向上,以第三系含盐地层和侏罗系煤系泥岩2套区域盖层划分为盐上、盐下和深层３套成藏组合,盐下白垩系成藏组合是天然气勘探主体;③从南向北,不同构造带的油气藏类型、油气相态、油气成藏期次表现为时空上的有序聚集;④从东向西,不同构造段构造特征、油气藏类型、成藏特征和资源潜力具有差异性,具有中段油气富集的特征。通过对油气成藏规律和油气分布特征的认识,整体建立了库车前陆盆地从非常规致密油气到常规油气的有序聚集模式,深入认识了油气分布规律和有利勘探领域。

关键词: 成藏条件, 成藏过程, 分布规律, 成藏组合, 有序聚集, 库车前陆盆地

CLC Number:

TE122.14

Zhao Mengjun, Lu Xuesong, Zhuo Qingong, Li Yong, Song Yan, Lei Ganglin, Wang Yuan. Characteristics and distribution law of hydrocarbon accumulation in Kuqa foreland basin[J]. Acta Petrolei Sinica, 2015, 36(4): 395-404.

赵孟军, 鲁雪松, 卓勤功, 李勇, 宋岩, 雷刚林, 王媛. 库车前陆盆地油气成藏特征与分布规律[J]. 石油学报, 2015, 36(4): 395-404.

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Characteristics and distribution law of hydrocarbon accumulation in Kuqa foreland basin

库车前陆盆地油气成藏特征与分布规律

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