呼探1井清水河组气藏流体相态特征及气藏类型

doi:10.7657/XJPG20210609

摘要/Abstract

摘要：

根据呼探1井清水河组原油物性初步判断其为凝析气藏,并通过开展单次脱气实验、井流物组成分析、恒质膨胀实验和定容衰竭实验,研究呼探1井地层流体相态。结果表明,呼探1井地层流体具有轻质组分含量高、中质和重质组分含量低的特点,呈现典型低含凝析油特征。凝析液量少,地层压力与露点压力差值较大,开采初期无需额外补充能量,采用回注伴生气的方式可抑制反凝析作用,并提高呼探1井采收率。基于生产数据,结合流体相态研究结果,通过地层流体压力-温度相图、三元组成三角相图、经验判别法等综合判断,呼探1井清水河组油气藏类型为带较大油环凝析气藏。

关键词: 准噶尔盆地, 呼探1井, 清水河组, 流体相态, 油气藏类型, 凝析气藏

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

中图分类号:

TE122.1

王启祥, 梁宝兴, 刘欢, 时凤, 靳军, 周伟, 妥宏. 呼探1井清水河组气藏流体相态特征及气藏类型[J]. 新疆石油地质, 2021, 42(6): 709-713.

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.

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