Dynamic analysis on edge of sand detachment of natural gas hydrate reservoir

Hao, Yongmao; Liang, Jikai; Zhan, Shiyuan; Fan, Mingzhi; Wang, Jiandong; Li, Shuxia; Yang, Fan; Yang, Shengyu; Wang, Chuanming

doi:10.1016/j.energy.2021.121786

Cited by 4 publications

(1 citation statement)

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“…In the process of depressurization mining, when the reservoir pressure is lower than the hydrate phase equilibrium pressure, the natural gas hydrate as the cementing material between the formation sandstones begins to decompose. When the pore fluid flow rate in the hydrate reservoir exceeds the critical velocity of sand, 52 the formation starts to produce sand. The reservoir pressure drops too fast can lead to a large amount of sand production of the formation, and the flowing sand can be carried into the fracture, blocking the fracture channel and reducing the flow conductivity.…”

Section: Introductionmentioning

confidence: 99%

The effects of time variable fracture conductivity on gas production of horizontal well fracturing in natural gas hydrate reservoirs

Hao

Yang

Guo

et al. 2022

Energy Science & Engineering

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Hydrate reservoirs in the South China Sea belong to muddy silt-type hydrate reservoirs with low permeability. Horizontal well fracturing is one of the main stimulation methods for low-permeability oil and gas reservoirs. For muddy silt-type hydrate reservoirs, the stability and effectiveness of hydraulic fractures may be a severe problem due to poor reservoir cementation, reservoir deformation, and sand production. In this paper, the time variability of fracture conductivity is considered for the first time. According to the

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Section: Introductionmentioning

confidence: 99%