致密低渗底水气藏控水二次加砂压裂技术研究与应用

doi:10.13809/j.cnki.cn32-1825/te.2022.04.019

Abstract

Abstract:

He-1 reservoir of Dongsheng Gas Field is a bottom water gas reservoir. Fractures are easy to communicate with the bottom water layer, resulting in rapid bottom water coning and there is no productivity after water flooding of gas wells. It is difficult to get effective production. Combined the research and development of water-consolidated proppant with the secondary sanding and high-pressure fracture control technology, the artificial shelter layer is formed at the bottom of the fracture, which effectively prevents the rise of gas-water interface while controlling the fracture height, improves the gas-water permeability ratio, reduces the flow resistance in the fracture, delays the water breakthrough cycle of gas wells, and realizes the economic and effective development of tight low permeability bottom water gas reservoirs. The water-contorl secondary sanding fracturing technology has been applied in ten wells of the bottom water gas reservoir in He-1 Member of Dongsheng Gas Field. The construction efficiency is 90 %. Compared with the adjacent wells fractured by the conventional means, the water production of the application wells is increased by 60 %, the liquid-gas ratio is decreased by 31.7 %, and the measured open flow capacity of Well-JP58-A is 20.4×10⁴ m³/d, which has achieved good water control effect while increase fracturing production.

Key words: secondary sanding, water-control fracturing, water-consolidated proppant, shelter layer, Dongsheng Gas Field

CLC Number:

TE357

Bingwei XU,Shibin WANG,Chengcheng LIU. Research and application of water-control secondary sanding fracturing technology in tight low permeability bottom water gas reservoir[J]. Petroleum Reservoir Evaluation and Development, 2022, 12(4): 698-702.

Figures/Tables 6

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Research and application of water-control secondary sanding fracturing technology in tight low permeability bottom water gas reservoir

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