Experimental Study of Gas Production From Methane Hydrate by Depressurization and Combination Method Under Different Hydrate Saturations

2012 ◽  
Author(s):  
Liguo Liu ◽  
Jiafei Zhao ◽  
Chuanxiao Cheng ◽  
Yongchen Song ◽  
Weiguo Liu ◽  
...  
Keyword(s):  
Experimental Study ◽  
Production Rate ◽  
Gas Hydrate ◽  
Methane Hydrate ◽  
Three Dimensional ◽  
Gas Production ◽  
Filling Pressure ◽  
Combination Method ◽  
Methane Hydrates ◽  
Experimental Systems

In this work, different saturated methane hydrates were formed by controlling the methane gas filling pressure on the three-dimensional experimental systems. The hydrates were dissociated using by depressurization and combination method, respectively. The results indicated that, as the saturation enhancing, the gas production was enlarged, however, the gas production rate became extremely volatile, and the decomposition cycle increased. Furthermore, compared with single depressurization, the combination method has the high gas production rate and efficiency, and the short decomposition cycle. So the combination method is worthy for further study of the gas hydrate exploitation.

SS - Gas Hydrate: Gas production from methane hydrate sediment layer by thermal stimulation with hot water injection

2010 ◽  
Author(s):  
Kyuro Sasaki ◽  
Shinzi Ono ◽  
Yuichi Sugai ◽  
Norio Tenma ◽  
Takao Ebinuma ◽  
...  
Keyword(s):  
Gas Hydrate ◽  
Methane Hydrate ◽  
Water Injection ◽  
Gas Production ◽  
Hot Water ◽  
Thermal Stimulation ◽  
Sediment Layer

Experimental study on gas production from methane hydrate in porous media by huff and puff method in Pilot-Scale Hydrate Simulator

Fuel ◽  
2012 ◽  
Vol 94 ◽  
pp. 486-494 ◽  
Author(s):  
Xiao-Sen Li ◽  
Bo Yang ◽  
Gang Li ◽  
Bo Li ◽  
Yu Zhang ◽  
...  
Keyword(s):  
Experimental Study ◽  
Porous Media ◽  
Methane Hydrate ◽  
Pilot Scale ◽  
Gas Production

scholarly journals A Hybrid Model for Simulating Fracturing Fluid Flowback in Tight Sandstone Gas Wells considering a Three-Dimensional Discrete Fracture

Lithosphere ◽  
2021 ◽  
Vol 2021 (Special 4) ◽  
Author(s):  
Suran Wang ◽  
Yuhu Bai ◽  
Bingxiang Xu ◽  
Yanzun Li ◽  
Ling Chen ◽  
...  
Keyword(s):  
Production Rate ◽  
Two Phase Flow ◽  
Three Dimensional ◽  
Gas Production ◽  
Production Performance ◽  
Phase Flow ◽  
Fracture Permeability ◽  
Tight Sandstone ◽  
Two Phase ◽  
Discrete Fracture

Abstract Two-phase (gas+water) flow is quite common in tight sandstone gas reservoirs during flowback and early-time production periods. However, many analytical models are restricted to single-phase flow problems and three-dimensional fracture characteristics are seldom considered. Numerical simulations are good choices for this problem, but it is time consuming in gridding and simulating. This paper presents a comprehensive hybrid model to characterize two-phase flow behaviour and predict the production performance of a fractured tight gas well with a three-dimensional discrete fracture. In this approach, the hydraulic fracture is discretized into several panels and the transient flow equation is solved by the finite difference method numerically. A three-dimensional volumetric source function and superposition principle are deployed to capture the flow behaviour in the reservoir analytically. The transient responses are obtained by coupling the flow in the reservoir and three-dimensional discrete fracture dynamically. The accuracy and practicability of the proposed model are validated by the numerical simulation result. The results indicate that the proposed model is highly efficient and precise in simulating the gas/water two-phase flow and evaluating the early-time production performance of fractured tight sandstone gas wells considering a three-dimensional discrete fracture. The results also show that the gas production rate will be overestimated without considering the two-phase flow in the hydraulic fracture. In addition, the influences of fracture permeability, fracture half-length, and matrix permeability on production performance are significant. The gas production rate will be higher with larger fracture permeability at the early production period, but the production curves will merge after fracturing fluid flows back. A larger fracture half-length and matrix permeability can enhance the gas production rate.

Experimental Study on Gas Production from Methane Hydrate Bearing Sand by Depressurization

2013 ◽  
Vol 310 ◽  
pp. 28-32
Author(s):  
Jian Ye Sun ◽  
Yu Guang Ye ◽  
Chang Ling Liu ◽  
Jian Zhang
Keyword(s):  
Experimental Study ◽  
Methane Hydrate ◽  
Hydrate Formation ◽  
Gas Production ◽  
Decomposition Kinetics ◽  
Dissociation Process ◽  
Hydrate Dissociation ◽  
Gas Hydrate Formation ◽  
Experimental Apparatus ◽  
Hydrate Saturation

The simulate experiments of gas production from methane hydrates reservoirs was proceeded with an experimental apparatus. Especially, TDR technique was applied to represent the change of hydrate saturation in real time during gas hydrate formation and dissociation. In this paper, we discussed and explained material transformation during hydrate formation and dissociation. The hydrates form and grow on the top of the sediments where the sediments and gas connect firstly. During hydrates dissociation by depressurization, the temperatures and hydrate saturation presented variously in different locations of sediments, which shows that hydrates dissociate earlier on the surface and outer layer of the sediments than those of in inner. The regulation of hydrates dissociation is consistent with the law of decomposition kinetics. Furthermore, we investigated the depressurizing range influence on hydrate dissociation process.

Experimental Study on Gas Production from Methane Hydrate-Bearing Sand by Hot-Water Cyclic Injection

2010 ◽  
Vol 24 (11) ◽  
pp. 5912-5920 ◽  
Author(s):  
Xin Yang ◽  
Chang-Yu Sun ◽  
Qing Yuan ◽  
Ping-Chuan Ma ◽  
Guang-Jin Chen
Keyword(s):  
Experimental Study ◽  
Methane Hydrate ◽  
Gas Production ◽  
Hot Water ◽  
Cyclic Injection

Experimental Study on Gas Hydrates Dissociation in Sands by Depressurization

2013 ◽  
Vol 690-693 ◽  
pp. 3557-3560
Author(s):  
Jian Ye Sun ◽  
Yu Guang Ye ◽  
Chang Ling Liu ◽  
Jian Zhang
Keyword(s):  
Experimental Study ◽  
Production Rate ◽  
Gas Hydrates ◽  
Decomposition Rate ◽  
Gas Production ◽  
Decomposition Process ◽  
Experimental Apparatus ◽  
Three Stages ◽  
Major Factors

Depressurization method is a more potential way for gas production from gas hydrates. The behavior of gas hydrates dissociation by depressurization method is observed by the use of an experimental apparatus. The hydrates saturation is tracked by TDR during hydrates decomposition. The decomposition process consist three stages: fast dissociation, stable dissociation and the end. Significantly one of major factors that determine gas production rate by depressurization: degree of depressurization is discussed. t1/2 is used to characterize the hydrates decomposition rate. The greater of degree of depressurization is the faster of the hydrates decomposition rate gets.

scholarly journals Natural Gas Production from Methane Hydrate Deposits Using Clathrate Sequestration: State-of-the-Art Review and New Technical Approaches

2011 ◽  
Vol 2011 ◽  
pp. 1-6 ◽  
Author(s):  
Annick Nago ◽  
Antonio Nieto
Keyword(s):  
Carbon Dioxide ◽  
Natural Gas ◽  
Carbon Dioxide Emissions ◽  
Methane Hydrate ◽  
Field Studies ◽  
Gas Production ◽  
Methane Hydrates ◽  
Methane Recovery ◽  
Natural Gas Production ◽  
Recovery Potential

This paper focuses on reviewing the currently available solutions for natural gas production from methane hydrate deposits using CO2 sequestration. Methane hydrates are ice-like materials, which form at low temperature and high pressure and are located in permafrost areas and oceanic environments. They represent a huge hydrocarbon resource, which could supply the entire world for centuries. Fossil-fuel-based energy is still a major source of carbon dioxide emissions which contribute greatly to the issue of global warming and climate change. Geological sequestration of carbon dioxide appears as the safest and most stable way to reduce such emissions for it involves the trapping of CO2 into hydrocarbon reservoirs and aquifers. Indeed, CO2 can also be sequestered as hydrates while helping dissociate the in situ methane hydrates. The studies presented here investigate the molecular exchange between CO2 and CH4 that occurs when methane hydrates are exposed to CO2, thus generating the release of natural gas and the trapping of carbon dioxide as gas clathrate. These projects include laboratory studies on the synthesis, thermodynamics, phase equilibrium, kinetics, cage occupancy, and the methane recovery potential of the mixed CO2–CH4 hydrate. An experimental and numerical evaluation of the effect of porous media on the gas exchange is described. Finally, a few field studies on the potential of this new gas hydrate recovery technique are presented.

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