岩性油气藏 ›› 2015, Vol. 27 ›› Issue (6): 64–71.doi: 10.3969/j.issn.1673-8926.2015.06.009

• 油气地质 • 上一篇    下一篇

塔北隆起英买 2 地区奥陶系油气成藏特征及富集规律

陈思明1,侯明才1,房启飞2,凡 闪3,姚清洲2,周俊峰2   

  1.  1. 成都理工大学 沉积学院,成都 610059 ; 2. 中国石油勘探开发研究院 西北分院,兰州 730020 ;3. 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
  • 出版日期:2015-12-20 发布日期:2015-12-20
  • 作者简介:陈思明( 1991- ),女,成都理工大学在读硕士研究生,研究方向为沉积盆地石油地质研究。 地址:( 610059 )四川省成都市成华区二仙桥东三路 1 号成都理工大学沉积学院。 E-mail : 372305034@qq.com 。
  • 基金资助:

    国家重大科技专项“海相碳酸盐岩储层地震描述与油气藏有效预测”(编号: 2011ZX05004 )资助

Hydrocarbon accumulation and enrichment rule of Ordovician in Yingmai - 2 area, northern uplift of Tarim Basin

Chen Siming 1,Hou Mingcai 1,Fang Qifei2,Fan Shan 3,Yao Qingzhou 2,Zhou Junfeng 2   

  1.  1. Institute of Sedimentary Geology , Chengdu University of Technology , Chengdu 610059 , China ; 2. PetroChina Research Institute of Petroleum Exploration & Development-Northwest , Lanzhou 730020 , China ; 3. Research Institute of Exploration and Development , PetroChina Tarim Oilfield Company , Korla 841000 , Xinjiang , China
  • Online:2015-12-20 Published:2015-12-20

摘要:

为厘清英买 2 地区奥陶系碳酸盐岩油气成藏史与主成藏期,探索油气富集规律,借助流体包裹体岩相学及温度特征分析,从油气主成藏期、构造、断裂及储层研究入手,解剖油气富集成藏主控因素间的时空匹配关系。 研究表明,英买 2 地区奥陶系储层发育晚加里东—早海西期、晚海西期和喜马拉雅期等3 期烃包裹体,反映储层经历了 3 次不同期次、不同强度的油气充注,且以晚海西期的中质油气充注为主;研究区油气富集受控于主成藏期构造背景下断裂与储层的时空匹配;北北西向、北西向走滑断裂带及北东向逆冲走滑断裂带对储层发育和油气运移与调整均起到了重要的控制作用; 3 组不同期次断裂带交会区是油气富集区,其优质储层和优势输导体系等成藏控制因素与主成藏期匹配良好。 在此基础上,对油气富集接替区进行了预测。

关键词: 低盐度注水, 碳酸盐岩油藏, 提高采收率, 润湿性反转, 孔喉连通性

Abstract:

In order to confirm the oil and gas accumulation rules of Ordovician carbonate reservoir in Yingmai-2 area, through the analysis of petrography and temperature features of fluid inclusion, the time-space relation for reservoirforming conditions was studied from the aspects of accumulation stages, structure, fault and reservoir. The result shows that the Ordovician reservoir in Yingmai-2 area experienced three hydrocarbon inclusions stages, including the late Caledonian-early Hercynian, the late Hercynian and the Himalayan stage. These three stages represent the oil and gas charging of three different periods and intensities, and the main stage is the intermediate oil and gas charging in late Hercynian. Under the background of structure, the oil and gas accumulation of Yingmai-2 area were controlled by space-time matching of fracture and reservoir during the main reservoir-forming period. Reservoir development and oil and gas enrichment were dominated by superimposition of fractures in three different stages. NNW and NW strike-slip fault and NE thrust-strike-slip fault played an important role in hydrocarbon migration and adjustment. The faults of three different periods met to form the fault interference zone, which can control the development and enrichment of oil and gas reservoir. On this basis, the replacing area of oil and gas enrichment of Yingmai-2 area was predicted.

Key words:  low salinity water flooding , carbonate reservoir , enhanced oil recovery , wettability alteration , pore connectivity

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