石油学报 ›› 2012, Vol. 33 ›› Issue (S2): 110-117.DOI: 10.7623/syxb2012S2010

• 地质勘探 • 上一篇    下一篇

鄂尔多斯盆地奥陶系碳酸盐岩储集体类型及特征

付金华  白海峰  孙六一  马占荣   

  1. 1. 中国石油长庆油田公司 陕西西安 710018; 2.低渗透油气田勘探开发国家工程实验室 陕西西安 710018;3. 中国石油长庆油田公司勘探开发研究院 陕西西安 710018
  • 收稿日期:2012-06-05 修回日期:2012-09-25 出版日期:2012-12-25 发布日期:2013-03-01
  • 通讯作者: 付金华
  • 作者简介:付金华,男,1962年12月生,1982年获江汉石油学院学士学位,2004年获西北大学博士学位,现为中国石油长庆油田公司副总地质师兼长庆油田公司勘探开发研究院院长、教授级高级工程师,主要从事鄂尔多斯盆地油气勘探工作
  • 基金资助:

    国家重大科技专项“鄂尔多斯盆地海相碳酸盐岩油气资源潜力、有利勘探区带评价与目标优选研究”(2011ZX05004-006)和中国石油天然气股份有限公司重大科技专项(2008E-0706)资助。

Types and characteristics of the Ordovician carbonate reservoirs in Ordos Basin, China

FU Jinhua    BAI Haifeng   SUN Liuyi   MA Zhanrong    

  • Received:2012-06-05 Revised:2012-09-25 Online:2012-12-25 Published:2013-03-01

摘要:

鄂尔多斯盆地奥陶系沉积时期,处于“两隆两鞍两坳陷”的古构造格局。2个隆起在平面上呈“L”型展布,共同控制着奥陶系的沉积相带,并控制着不同类型碳酸盐岩储集体的区域展布。奥陶系的储集类型主要包括风化壳溶孔型、白云岩晶间孔型、台缘礁滩孔隙型、岩溶缝洞型4种。风化壳溶孔型储集体为最有利的储集体,在该储集体中目前已发现并探明靖边大气田;白云岩晶间孔型储集体勘探获得初步突破;其他2种类型储集体的勘探还未取得实质性进展,但近期勘探已发现一些新的苗头,存在较大的勘探潜力,是开拓鄂尔多斯盆地下古生界天然气勘探新领域的关键所在。

关键词: 奥陶系, 风化壳溶孔, 白云岩晶间孔, 台缘礁滩孔隙, 岩溶缝洞, 鄂尔多斯盆地

Abstract:

In the Ordovician, the Ordos Basin was deposited in a “two-uplift, two-saddles, two-depression” paleotectonic framework. The two uplifts horizontally spread in an “L” shape and jointly controlled the Ordovician sedimentary facies as well as the regional distribution of different types of carbonate reservoirs. The Ordovician reservoirs were mainly divided into four types, i.e., weathering crust dissolution pore reservoirs, dolomite intercrystalline pore reservoirs, platform margin reef pore reservoirs, and karst-vuggy reservoirs. Of these, weathering crust dissolution pore reservoir is the most favorable reservoir, in which the large Jingbian gas field has been found. Initial breakthrough has been made in the exploration of dolomite intercrystalline pore reservoir. Substantial exploration progress has not been achieved in the other two types of reservoirs, but recent exploration has found some new signs of great exploration potential. These are the key frontiers of gas exploration in the Lower Paleozoic of Ordos Basin.

Key words: Ordovician, weathering crust dissolution pore, dolomite intercrystalline pore, platform margin reef pore, karst-vuggy reservoir, Ordos Basin