Study on the influence of reservoir permeability evolution around production wells on production capacity of natural gas hydrate

被引：0

作者：

Shen, Pengfei ^{[1
,2
]}

Hou, Jiaxin ^{[2
]}

Lu, Tao ^{[3
]}

Bi, Haoyuan ^{[2
]}

He, Juan ^{[1
,4
]}

Li, Xiaosen ^{[1
,4
]}

Li, Gang ^{[1
,4
]}

机构：

[1] Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou

[2] School of Mining and Geomatics Engineering, Hebei University of Engineering, Handan

[3] College of Petroleum Engineering, Xi'an Shiyou University, Xi'an

[4] Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou

来源：

Earth Science Frontiers | 2025年 / 32卷 / 02期

关键词：

frozen soil areas; gas hydrate; permeability; reservoir renovation; well spacing;

D O I：

10.13745/j.esf.sf.2024.11.25

中图分类号：

学科分类号：

摘要：

The use of fracturing technology to transform and increase production in hydrate reservoirs has been proven to have application prospects for hydrate production. The main purpose of this study is to analyze the gas production patterns of reservoirs under the interaction between two production wells, and to obtain the optimal distance between production wells. This article is based on the hydrate occurrence Parameters of DK-2 Station in the permafrost region of the Qilian Mountains. The reservoir outside the dual production wells were fractured by fracturing, and the production potential of this method for extracting hydrate Sediments in the permafrost region was evaluated through numerical Simulation. The Simulation results show that the use of hydraulic fracturing method to enhance the permeability of the surrounding reservoirs of the mining well has broken through the technical bottleneck of using only depressurization method to extract hydrates. The gas production rate and cumulative gas release are higher than traditional depressurization methods, and the average gas water ratio has significantly increased. After the rock matrix around the horizontal well ruptures, it will increase the flow characteristics of the fracturing zone, thereby promoting the propagation distance of pressure drop. The infiltration of hydrate decomposition areas between horizontal production wells is conducive to promoting the decomposition of gas and water flow towards the production wells. In addition, hydraulic fracturing methods are very effective for hydrate reservoirs with intrinsic permeability below 1 mD, and the recommended optimal distance between production wells is 45-60 m. © 2025 Science Frontiers editorial department. All rights reserved.

引用

页码：166 / 177

页数：11

共 19 条

[1]

CHIBURA P E., ZHANG W., LUO A, Et al., A review on gas hydrate production feasibility for permafrost and marine hydrates[J], Journal of Natural Gas Science and Engineering, 100, (2022)

[2]

WANG X, SUN Y., Li B, Et al., Reservoir Stimulation of marine natural gas hydrate-a review [J], Energy, (2022)

[3]

Li G, MORIDIS G J, ZHANG K N., Et al., The use of huff and puff method in a Single horizontal well in gas production from marine gas hydrate deposits in the Shenhu Area of South China Sea, Journal of Petroleum Science and Engineering, 77, pp. 49-68, (2011)

[4]

WEI W N., Li B., Gan Q, Li Y L., Research progress of natural gas hydrate exploitation with C02 replacement: a re-view, Fuel, 312, (2022)

[5]

FARHADIAN A, SHADLOO A, ZHAO X., Et al., Challen-ges and advantages of using environmental^ friendly kinetic gas hydrate inhibitors for flow assurance applicatiori: a com-prehensive review, Fuel, 336, (2023)

[6]

Li G, Li X S., Li B., Et al., Methane hydrate dissociation using inverted five-spot water flooding method in cubic hydrate simulator[J], Energy, 64, pp. 298-306, (2013)

[7]

HUANG M, WU L., NING F, Et al., Research progress in natural gas hydrate reservoir Stimulation, Natural Gas Industry B, 10, 2, pp. 114-129, (2023)

[8]

KOJI Y, BOSWELL R, TIMOTHY S C., Et al., Review of past gas production attempts from subsurface gas hydrate de-posits and necessity of long-term production testing, Energy Fuels, 36, 10, pp. 5047-5062, (2022)

[9]

LU Z Q, SULTAN N., J1N C S., Et al., Modeling on gas hydrate formation conditions in the Qinghai-Tibet plateau permafrost, Chinese Journal of Geophysics, 52, 1, pp. 157-168, (2009)

[10]

ZHU Y H, ZHANG YQ., WEN HJ., Et al., Gas hydrates in the Qilian Mountain permafrost, Qinghai, Northwest China [J], Acta Geologica Sinica, 84, 1, pp. 1-10, (2010)

← 1 2 →