天然气地球科学

• 天然气地质学 • 上一篇    下一篇


柴达木盆地阿尔金山前东坪—牛东斜坡带天然气成藏条件

曹正林,孙秀建,汪立群,阎存凤,赵健,马峰   

  1. 1.中国地质大学(北京)海洋学院,北京 100083;
    2.中国石油勘探开发研究院西北分院,甘肃 兰州 730020;
    3.中国石油青海油田分公司,甘肃 敦煌 736202
  • 收稿日期:2013-04-09 修回日期:2013-07-22 出版日期:2013-12-10 发布日期:2013-12-10
  • 通讯作者: 曹正林caozl@petrochina.com.cn E-mail:caozl@petrochina.com.cn
  • 作者简介:曹正林(1970-),男,重庆合川人,高级工程师,博士后,主要从事油气地质综合研究. E-mail:caozl@petrochina.com.cn.
  • 基金资助:

    国家重大科技专项(编号:2011E-03)资助.

The Gas Accumulation Conditions of Dongping-Niudong Slope Areain Front of Aerjin Mountain of Qaidam Basin

CAO Zheng-lin,SUN Xiu-jian,WANG Li-qun,YAN Cun-feng,ZHAO Jian,MA Feng   

  1. 1.School of Ocean Science,China University of Geosciences(Beijing),Beijing 100083,China;
    2.Research Institute of Petroleum Exploration and Development-Northwest,PetroChina,Lanzhou 730020,China;
    3.Qinghai Oilfield Company,CNPC,Dunhuang 736202,China
  • Received:2013-04-09 Revised:2013-07-22 Online:2013-12-10 Published:2013-12-10

摘要:

柴达木盆地阿尔金山前东坪—牛东斜坡带早期勘探程度与认识程度均比较低,勘探没有取得突破。近2年在寻找源外大型斜坡岩性油气藏地质新认识的指导下,通过加强斜坡带岩性气藏成藏条件综合分析与评价,认为东坪—牛东斜坡带紧临侏罗系大型生烃凹陷,具有多套目的层系、有利储盖组合、持续发育的古隆起(古斜坡)、区域性不整合、油气疏导断裂等有利成藏条件,目前在低断隆部位的东坪1井基岩风化壳及路乐河组(E1+2)获得勘探突破,在高断阶部位的东坪3井下干柴沟组(E3)也获得工业气流,在牛东鼻隆牛1井侏罗系同样获得高产油气流,展示出整个东坪—牛东斜坡带天然气成藏条件优越,具有广阔的勘探前景。

 

 

关键词: 柴达木盆地阿尔金山前, 东坪&mdash, 牛东斜坡带, 成藏条件, 勘探前景

Abstract:

The level of exploration and geological understanding of Dongping-Niudong slope area,which is in front of Aerjin Mountain of Qaidam Basin,was poor in early period.Recently,under the guidance of the new exploration theory of looking for large lithologic reservoirs,which are outside the sources,in slope areas,we strengthened comprehensive analysis and evaluation of the lithologic gas accumulation conditions in the slope areas.The result showed that the accumulation conditions in Dongping-Niudong slope were favorable,such as large distribution area of source rocks,multiple sets of target layers department,the favorable reservoir-cap combination,the continuing development of palaeohigh(ancient slopes),regional unconformity,divert fractures for oil and gas and so on.Now,we have achieved great exploration breakthrough in the weathering crust and Lulehe Formation(E1+2) of Well Dongping 1,which located in low faulted uplift part,industrial gas in lower Ganchaigou Formation(E3) of the Well Dongping 3,which located in high fault terrace part,high-yield oil and gas flow in the Jurassic of well Niu 1,which located in Niudong nose uplift.These findings show that the natural gas accumulation condition in the whole Dongping-Niudong slope is advantageous and this area has broad prospects of exploration.

Key words: In front of Aerjin Mountain of Qaidam Basin, Dongping-Niudong slope, Accumulation conditions, Prospects of exploration

中图分类号: 

  • TE121.1
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