Differences of Reservoir Characteristics between Domestic and Oversea Tight Gas of CNPC and Its Developing Trends

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  • Research Institute of Petroleum Exploration and Development,PteroChina,Beijing 100083,China

Received date: 2014-02-21

  Revised date: 2015-03-30

  Online published: 2015-06-10

Abstract

In order to strengthen the oversea development of tight sandstone in CNPC orderly and effectively,the article investigated the characteristic differences between Groundbirch tight sandstone reservoir and domestic typical tight sandstone reservoirs such as Sulige and Xujiahe.There were six significant differences including forming rules,sedimentary environments,sand architectures,pore structures,physical properties,and adsorbed gas contents.The extremely tight marine sandstone of Groundbirch was thick,massive and prograding.The forming rule was “self-generated and self-contained”.The reservoir itself was rich in TOC and adsorbed gas content.The article also generalized the research trend of tight gas which was summarized into five “more” based on the contrast with before:The geological forming theory would be more “rich”,the reservoir description would be more “fine”,the reservoir evaluation would be more “comprehensive”,the production capacity forecast and well network deployment would be more “reasonable”,the single well stimulation techniques would be more “effective”.

Cite this article

JIANG Ping,MU Long-xin,ZHANG Ming,ZHAO Wen-guang . Differences of Reservoir Characteristics between Domestic and Oversea Tight Gas of CNPC and Its Developing Trends[J]. Natural Gas Geoscience, 2015 , 26(6) : 1095 -1105 . DOI: 10.11764/j.issn.1672-1926.2015.06.1095

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