A Prediction of Water Breakthrough Time of Horizontal Wells in Gas Reservoirs with Bottom Water
Based on the theory of porous flow, a study on prediction of water breakthrough time of horizontal wells in a homogeneous gas reservoir with bottom water is presented. This paper derives water breakthrough time formula of horizontal wells in a reservoir with bottom water drive. In the formula many factors are taken into account, such as height of water avoidance, gas-water mobility ratio, irreducible water saturation, residual gas saturation, etc. Case study indicates that for a horizontal gas well with constant production rate, the water breakthrough time is proportional to the height of water avoidance.
Daoguo Yang, Tianlong Gu, Huaiying Zhou, Jianmin Zeng and Zhengyi Jiang
W. Y. Zhu et al., "A Prediction of Water Breakthrough Time of Horizontal Wells in Gas Reservoirs with Bottom Water", Advanced Materials Research, Vols. 201-203, pp. 393-398, 2011