Oil & Gas Geology ›› 2016, Vol. 37 ›› Issue (5): 773-778.doi: 10.11743/ogg20160517

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Characteristics of globigerinid limestone reservoirs of bottom current deposition in Gas Field A of Madura Strait, Indonesia

Ni Jun'e, Sun Lichun, He Juan, Jiang Baizhao, Wang Hongqiang, Wang Long, Guo Lina   

  1. CNOOC Research Institute, Beijing 100027, China
  • Received:2015-05-26 Revised:2016-03-12 Online:2016-10-08 Published:2016-11-07

Abstract: Globigerinid limestone in Gas Field A of Madura Strait in Indonesia might be deposited by bottom current in outer shelf to upper slope.Petrological and reservoir space characteristics as well as well logging and seismic data were integrated to describe its sedimentary characteristics.According to Dunham's classification,the reservoir consists of grainstone,packstone and wackestone.The former two lithologies are grain supported and well sorted,and the reservoir space was dominated by intragranular dissolved pore,followed by intergranular dissolved pore and vuggsand a small amount of moldic pores and fractures.The reservoirs feature in large thickness,good physical properties and high NTG,and have great petroleum-bearing potential.There has been much debate over the depositional environment of the Pliocene globigerinid limestone in the Madura Strait.We propose three provenances for the reservoir.

Key words: globigerinid, bottom current deposition, reservoir characteristics, depositional environment, Madura Strait, Indonesia

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