Natural gas exploration domains and analysis of carbonate reservoir characteristics in the east of Tarim Basin,NW China

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  • 1.PetroChina Hangzhou Research Institute of Petroleum Geology,Hangzhou 310023,China;
    2.CNPC Key Laboratory of Carbonate Reservoirs,Hangzhou 310023,China;
    3.Postgraduate Department,PetroChina Research Institute of Petroleum Exploration and Development,Beijing 100083;
    4.Research Institute of Exploration and Development,Tarim Oilfield Company,PetroChina,Korla 841000,China

Received date: 2015-06-08

  Revised date: 2015-09-06

  Online published: 2019-09-20

Abstract

Carbonate rocks have been developed in Ordovician,Cambrian,and Sinian of Eastern Tarim Basin,and the cumulative maximum thickness exceeded 2000 meters.They are the main carrier of oil and gas,and a great deal of natural gas have been found in the past five years.Based on geological horizons,lithofacies,and reservoir differences,carbonate natural gas exploration domains of Eastern Tarim Basin can be classified into five types:carbonate platform limestone of Ordovician,carbonate platform dolomite of Ordovician,bioherms-shoal flats of platform margin in Cambrian,carbonate gravity flow of Cambrian slope,Sinian dolomite.Carbonate reservoir characteristics of all areas are synthetically analyzed through drilling core,thin section,experiments and logging data of over 10 drilling wells.It is held that good fracture and cave reservoir in carbonate platform limestone of Ordovician can partly distributed.Carbonate platform dolomite of Ordovician is better than limestone.Bioherms-shoal flats of platform margin in Cambrian have large Stacking thickness.Good quality and large thickness of carbonate gravity flow can be found in Cambrian slope.And effective reservoir also was found in Sinian dolomite.Commercial Gas has been found in limestone and dolomite of Ordovician in Shunnan-Gucheng area.Hence,the two regions can learn from each other's experience of exploration to expand the scene.

Cite this article

Zheng Xing-ping, Zhang You, Chen Xi-guang, Yang Zhao, Shao Guan-ming, Bai Xiao-jia . Natural gas exploration domains and analysis of carbonate reservoir characteristics in the east of Tarim Basin,NW China[J]. Natural Gas Geoscience, 2016 , 27(5) : 765 -771 . DOI: 10.11764/j.issn.1672-1926.2016.05.765

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