Fluid Phases and Gas Reservoirs of Qingshuihe Formation in Well Hutan-1

doi:10.7657/XJPG20210609

Abstract

Abstract:

After characterizing the gas reservoir of the Qingshuihe formation in Well Hutan-1 as a condensate gas reservoir, the fluid phase behaviors around the well were studied through a series of experiments of one-time degassing, fluid composition, constant-mass expansion and constant-volume depletion. The research results show that the formation fluid compositions are characterized by high contents of light components and low contents of medium and heavy components, indicating a typical gas reservoir containing less condensate oil. Due to a few condensate fluid and a big difference between formation pressure and dew point pressure, it is not necessary to supplement energy in the early production stage. In addition, re-injecting associated gas can inhibit retrograde condensate and increase the recovery of Well Hutan-1. Based on the production data, fluid phase behavior, pressure-temperature phase diagram of the formation fluid, triangular ternary phase diagram and empirical discrimination, the reservoir of the Qingshuihe formation in Well Hutan-1 is deemed as a condensate gas reservoir with a large oil ring.

Key words: Junggar basin, Well Hutan-1, Qingshuihe formation, fluid phase behavior, reservoir type, condensate gas reservoir

CLC Number:

TE122.1

WANG Qixiang, LIANG Baoxing, LIU Huan, SHI Feng, JIN Jun, ZHOU Wei, TUO Hong. Fluid Phases and Gas Reservoirs of Qingshuihe Formation in Well Hutan-1[J]. Xinjiang Petroleum Geology, 2021, 42(6): 709-713.

Figures/Tables 8

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