西南石油大学学报(自然科学版)

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The Exploration Prospects of T2l1
1,Middle Triassic in
Northwestern Sichuan

Huang Dong1, Li Hongliang2, Jiang Jingping3, Shi Xuewen1, Wang Hua1   

  1. 1. Exploration and Development Research Institute,Southwest Oil and Gas Field Company,PetroChina,Chengdu,Sichuan 610041,China
    2. Exploration Division,Southwest Oil and Gas Field Company,PetroChina,Chengdu,Sichuan 610041,China
    3. Editor’s Office of Natural Gas Industry,Chengdu,Sichuan 610041,China
  • Online:2014-02-01 Published:2014-02-01

Abstract:

Leikoupo Formation has a large amount of resources,but in addition to the previously found Wolonghe,Moxi gas
reservoir,no other reserve of scale has been found. With the progress of exploration of the marine strata in western Sichuan,especially
further degree of exploration,the T2l1
1 gradually exhibits its good exploration prospects. Based on Leikoupo Formation
determination,and according the field profile,debris samples,oil drilling and test data analysis,we think that the sub-section
of the T2l1
1 belongs to the reservoir controlled by shale facies which is similar or equivalent to Moxi and Wolonghe reservoirs.
Structural traps and fault development in the area are conducive to oil and gas migration and accumulation. Comprehensive
analysis reveals that the most favorable exploration zones are the Zhongba—Shuangyushi belt in the front north of Longmen
mountain and the Meishupu—Jiulongshan belt in the front of Micangshan mountain.

Key words: formation determination, reservoir performance, shoal facies, migration and accumulation, T2l1
1,
northwestern
Sichuan