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| 准噶尔盆地车排子地区新村油田石炭系构造特征与成藏条件 |
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刘洛夫1,2,罗群1,3,乔锦琪1,2,黄捍东1,3,牛亚卓4,姜亭4,魏建设4,胡青1,2
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1. 中国石油大学(北京)
油气资源与探测国家重点实验室, 北京 102249;
2. 中国石油大学(北京)
盆地与油藏研究中心, 北京 102249;
3. 中国石油大学(北京)
非常规天然气研究院, 北京 102249;
4. 中国地质调查局西安地质调查中心, 陕西 西安 710054
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| 摘要: |
| 通过对准噶尔盆地车排子地区新村油田石炭系构造特征、储层、油气分布特征、主要油藏类型及其成藏条件的研究，建立了该区成藏综合模式。结果表明，研究区总体上处于构造斜坡带，具有北高南低、西高东低、南北分块的构造特征，地层产状平缓；研究区在石炭纪处于区域拉张构造应力背景，并在拉张应力作用下形成以北东—南西向展布为主的拉张型断裂组合样式；研究区大部分地区地层等高线平直，不利于形成背斜构造圈闭，但各级断裂发育，为形成断层遮挡圈闭提供了有利条件，同时也可作为油气运移的通道。依据石炭系断裂分布、断裂模式及其组合，将研究区的断裂划分为复合地垒系统、复合地堑系统和零星断裂系统。控制研究区油气运聚成藏的主要地质因素是断裂、裂缝及岩性变化或物性封堵。 |
| 关键词: 构造样式 成藏条件 石炭系 车排子地区 准噶尔盆地 |
| DOI：10.12097/j.issn.1671-2552.2018.01.008 |
| 分类号:P534.45;P618.130.2 |
| 基金项目:中国地质调查局项目《中国北方（天山-北山-阴山以北）石炭纪—二叠纪盆地演化研究与岩相古地理编图》（编号：121201011000150012-03） |
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| A study of Carboniferous structure characteristics and reservoir-forming conditions in the Xincun Oilfield, Chepaizi area, Junggar Basin |
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LIU Luofu1,2,LUO Qun1,3,QIAO Jinqi1,2,HUANG Handong1,3,NIU Yazhuo4,JIANG Ting4,WEI Jianshe4,HU Qing1,2
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1. State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing)
, Beijing 102249, China;
2. Basin and Reservoir Research Center, China University of Petroleum (Beijing)
, Beijing 102249, China;
3. Unconventional Gas Research Institute, China University of Petroleum (Beijing)
, Beijing 102249, China;
4. Xi'an Geological Survey Center, China Geological Survey Xi'an 710054, Shaanxi, China
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| Abstract: |
| Through the analysis of Carboniferous structure characteristics, distribution characteristics of reservoir bed and hydrocarbon, major oil pool styles and reservoir-forming conditions in the Xincun oilfield in Chepaizi area of Junggar Basin, a synthetic hydrocarbon accumulation model was established. The results show that the study area is located on a tectonic slope on the whole, which has the tectonic characteristics of higher in the north and lower in the south, higher in the west and lower in the east, and south-north partitioning with gentle stratigraphic attitude. The study area mainly developed tensional faults in Carboniferous, which are in NE-SW direction and were formed in a regional tensional tectonic stress background. In the study area, the strata contour lines are mainly flat-straight, suggesting that the strata could not provide favorable conditions for the formation of anticline traps, but the study area has well-developed multi-order faults, which could provide favorable conditions for the formation of faulted block traps and pathways for oil-gas migration. Carboniferous faults can be divided into composite horst system, composite graben system and sporadic fault system based on their distribution, patterns and assemblies. The major geological factors controlling oil-gas migration and accumulation in the Xincun oilfield are the faults, fractures and lithologic changes or physical sealing. |
| Key words: tectonic style reservoir-forming conditions Carboniferous Chepaizi area Junggar Basin |