石油与天然气地质 ›› 2000, Vol. 21 ›› Issue (3): 252-255.doi: 10.11743/ogg20000314

• 油气空间 • 上一篇    下一篇

和田河气田奥陶系碳酸盐岩裂缝

杨威1, 王清华2, 赵仁德2, 刘效曾2   

  1. 1. 石油勘探开发研究院廊坊分院天然气所,河北廊坊065007;
    2. 塔里木石油勘探开发指挥部勘探开发研究院,新疆库尔勒841000
  • 收稿日期:2000-02-16 出版日期:2000-09-25 发布日期:2012-01-16

FRACTURES OF ORDOVICIAN CARBONATE ROCKS IN HETIAN RIVER GASFIELD

Yang Wei1, Wang Qinghua2, Zhao Rende2   

  1. 1. Natural Gas Department of Langfan Branch, Research Institute of Petroleum Exploration and Development, Langfang, Hebei;
    2. Research Institute of Tarim Petroleum Exploration and Development Headquarters, Korla, Xinjiang
  • Received:2000-02-16 Online:2000-09-25 Published:2012-01-16

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摘要：

和田河气田奥陶系碳酸盐岩中发育3类成岩缝和5期构造缝。裂缝以高角度小微缝为主,多数裂缝被方解石和泥质充填或半充填。缝合线和2,3,4,5期构造缝尚存在未被充填的空间,可作为油气的储集空间和渗流通道。裂缝是储层渗透率的主要贡献者,总渗透率的99.4%为裂缝提供。裂缝的发育程度主要受控于构造运动和岩性,而与不整合面和地层负荷关系不大。

关键词: 裂缝, 控制因素, 裂缝渗透率, 碳酸盐岩, 和田河气田, 塔里木盆地

Abstract:

Three sorts of diagenetic fractures and five stages of structural fractures developed in Ordovician carbonate rocks in Hetian River Gasfield.Their characters of development time,attitude,scale,packing degree and so on are different each other.The fractures are characterized by high angle and small micro fractures,most of them are filled by mud and calcite.The suture and 2～5 stage structural fractures contain spaces for hydrocarbon preservation and migration.Fractures are the principal contributors of permeability(supplying 99.4% of total permeability),and it is the main cause for carbonate rocks to be efficient reservoirs.development degree of fractures was controlled by lithology and tectonic movement.

Key words: fracture, controlling factor, fracture permeability, carbonate rock, Hetian River Gasfield, Tarim Basin

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