新疆石油地质

新疆石油地质 ›› 2011, Vol. 32 ›› Issue (5): 457-460.

• 油气勘探 • 上一篇    下一篇

红车断裂带火山岩储集层裂缝特征

苏培东1, 秦启荣1, 袁云峰2, 姜复东2   

  1. 1.西南石油大学资源与环境学院,成都 610500;
    2.中国石油新疆油田分公司勘探开发研究院,新疆克拉玛依 834000
  • 收稿日期:2010-12-14 出版日期:2011-10-01 发布日期:2020-08-19
  • 作者简介:苏培东（1973-）,男,四川眉山人,副教授,博士,构造地质,（Tel）13980983851（E-mail）spdong@126.com.
  • 基金资助:
    国家科技重大专项（2008ZX05001-001）

Characteristics of Volcanic Reservoir Fractures in Upper Wall of HongChe Fault Belt

SU Pei-dong1, QIN Qi-rong1, YUAN Yun-feng2, JIANG Fu-dong2   

  1. 1. College of Resources and Environment, Southwest Petroleum University, Xindu, Sichuan, 610500, China;
    2. Research Institute of Exploration and Development, Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000, China
  • Received:2010-12-14 Online:2011-10-01 Published:2020-08-19

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摘要： 根据岩心裂缝观察和测井资料研究,发现红车断裂带裂缝类型主要包括4 种非构造缝（层间缝、缝合线、溶蚀缝和成岩缝）以及4 种构造缝（水平缝、低角度缝、斜交缝和高角度缝）。统计发现,红车断裂带约50%裂缝全充填,37%半充填,13%未充填。充填物有方解石、硬石膏、沸石、硅质、绿泥石以及其他自生矿物。裂缝宽度0.1~20 mm,以1~4 mm 为主;90%以上的裂缝倾角分布在10~50°,裂缝走向以北东向为主,次为近南北向和北西向。裂缝发育的有利构造部位主要是构造高点、构造交汇点和断层发育区,裂缝发育程度随储集层岩石的脆性增加而增加,裂缝发育程度与开度均随储集层埋深增加而减小。

关键词: 准噶尔盆地, 裂缝特征, 石炭系, 火山岩, 红车断裂带

Abstract: The fractural types in Hongshanzui-Chepaizi (HongChe) fault belt in Junggar basin mainly include 4 non-structural fractures (interlayer fracture, stylolite, dissolution fissure and diagenetic fissure) and 4 structural fractures (horizontal fracture, low-angle fracture, diagonal seam and high-angle fracture), according to the study of core fracture and well logging data. The statistics show that about 50% of HongChe fault fractures are totally filled, 37% semi-filled, 13% unfilled. The types of filled minerals are calcite, anhydrite, zeolite, silica, chlorite, and other authigenic ones. The fissure width ranges from 0.1 mm to 20 mm, dominated by 1~4 mm; the fractural dip ranges from 10° to 50°, which account for more than 90% of statistical fractures. The trend of the fractures is dominated by NE , the secondary is near SN and NW. Favorable structural positions where fractures developed are mainly on structural highs, structural intersection and fault-developed area. The fracture developing extent is increasing with the increase of fragility of reservoir rocks. The fracture development and opening are all decreasing with the increase of reservoir burial depth.

Key words: Junggar basin, fractural characteristic, Carboniferous, volcanic rock, HongChe fault belt

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