The Influences of Irreducible Water and Depletion Rate on Critical Flow Saturation of Gas Condensate

Abstract

Abstract: In recent years, the massive researches about critical flow saturation of gas condensate have been made at home and abroad. However, the results from different methods and tools showed big differences and even opposite ones among them. The self-developed ultrasonic wave test system is used to make five tests on gas condensate critical flow saturation in this paper, including two groups of contrast experiments considering the irreducible water influence and a group of contrast experiment considering depletion rate influence. The experimental results show that the gas condensate critical flow saturation is generally low, approximately about 10%, and the saturation at high depletion rate is lower than that at low depletion rate, which indicates that the high depletion rate is advantageous to flow of in-situ gas condensate; the existence of irreducible water can reduce the gas condensate critical flow saturation.

Key words: critical flow, saturation, ultrasonic wave, irreducible water

CLC Number:

TE372

SUN Feng-jing, GUO Ping, DU Jian-fen, JIANG Tong-wen, WANG Xiao-qiang, LIAO Fa-ming. The Influences of Irreducible Water and Depletion Rate on Critical Flow Saturation of Gas Condensate[J]. Xinjiang Petroleum Geology, 2006, 27(4): 456-458.

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