A Prediction of Water Breakthrough Time in Gas Reservoirs with Bottom Water

Xinjiang Petroleum Geology ›› 2007, Vol. 28 ›› Issue (1): 92-93.

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A Prediction of Water Breakthrough Time in Gas Reservoirs with Bottom Water

WANG Hui-qiang¹, LI Xiao-ping¹, YANG Qi², GONG Wei³, ZENG Yu-qiang¹

1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China;
2. Research Institute of Petroleum Engineering Technology, Henan Oilfield Company, Sinopec, Nanyang, Henan 473132, China;
3. Chongqing Gas Field, Southwest Oil/Gas Field Company, PetroChina, Chongqing 404300, China

Received:2006-07-17 Revised:2006-09-14 Online:2007-02-01 Published:2020-07-29

Abstract

Abstract: Based on the theory of percolation flow through porous media, a study on prediction of water breakthrough time in bottom-water gas reservoirs is presented. Through mathematical calculations, a formula to determine the time of water breakthrough in bottom-water gas wells is derived. In the formula many factors are taken into account, such as perforating degree, gas-water mobility ratio, Irreducible water saturation, residual gas saturation, etc. Case study indicates that for a gas well with constant production rate, the relationship between the time of water breakthrough and the perforating degree assumes asymmetrical convex curve.

Key words: bottom-water reservoir, water coning, water breakthrough, time, prediction

CLC Number:

TE312

WANG Hui-qiang, LI Xiao-ping, YANG Qi, GONG Wei, ZENG Yu-qiang. A Prediction of Water Breakthrough Time in Gas Reservoirs with Bottom Water[J]. Xinjiang Petroleum Geology, 2007, 28(1): 92-93.

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A Prediction of Water Breakthrough Time in Gas Reservoirs with Bottom Water

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