Connectivity Characterization of Fractured-Vuggy Carbonate Reservoirs and Application

doi:10.7657/XJPG20220209

Abstract

Abstract:

Fractured-vuggy carbonate reservoirs are difficult to develop efficiently due to their strong heterogeneity, challenging connected unit identification, and unknown inter-well connectivity. In this paper, facies-controlled inversion and maximum likelihood attribute were used to characterize the fractured-vuggy aggregate and spatial distribution of large-scale fractures, so as to identify connected units and clarify the inter-well connection mode and the remaining oil potential. Based on dynamic data of wells, the connectivity was analyzed to verify the rationality of the connectivity characterization result obtained from static data. The technique was applied in the gas injection development of the Lungu 7-5 well group in the Lungu 7 wellblock, providing a basis for gas injection development strategy making to further improve the reservoir recovery performance.

Key words: carbonate, fractured-vuggy reservoirs, connectivity, facies-controlled inversion, maximum likelihood attribute, fracture, con-nected unit, gas injection development

CLC Number:

TE344

WU Meilian, CHAI Xiong, ZHOU Bihui, LI Hong, YAN Nan, PENG Peng. Connectivity Characterization of Fractured-Vuggy Carbonate Reservoirs and Application[J]. Xinjiang Petroleum Geology, 2022, 43(2): 188-193.

Figures/Tables 4

References 28

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