Influence of hydrate structure on continuous separation of coal bed methane gas: A thermodynamic simulation study

2016 ◽  
Vol 35 ◽  
pp. 1511-1518 ◽  
Author(s):  
Thaneer Malai Narayanan ◽  
Ryo Ohmura
Keyword(s):  
Simulation Study ◽  
Thermodynamic Simulation ◽  
Coal Bed ◽  
Coal Bed Methane ◽  
Continuous Separation ◽  
Methane Gas

scholarly journals New Technique to Accelerate Gas Production on CBM Through Use of Sacrifice Well

2017 ◽  
Vol 12 (1) ◽  
pp. 86
Author(s):  
Leksono Mucharam ◽  
Silvya Rahmawati ◽  
Rafael Purba
Keyword(s):  
Gas Production ◽  
New Technique ◽  
Coal Bed ◽  
Coal Bed Methane ◽  
Great Promise ◽  
New Techniques ◽  
Technical Problems ◽  
Methane Gas ◽  
The World ◽  
Unconventional Resource

Coal Bed Methane (CBM) is an unconventional resource that shows great promise, particularly in Indonesia, whose CBM reservoir is relatively thick. Gas reserves of CBM are estimated at 450 TSCF in Indonesia, which makes it, the 6th largest CBM-containing country in the world. However, regulatory and technical limitations slow the progression of the exploitation of this resource. One of the fundamental technical problems is related to the length of gas production due to the duration of the dewatering time. Many studies have been developed related to the production of CBM, and this paper discusses several characteristics, patterns and techniques regarding the production of methane gas from coal through the use of a sacrifice well. Several scenarios are analysed with the use of a simulator. The results show that the production of a thick CBM reservoir, with some sensitivity patterns of production through the use of a sacrifice well, have an influence on the production of gas and water for the exploitation of CBM resources. In other words, the use of new techniques that are discussed in this paper have an impact on reducing the dewatering time and are effectively implemented in Indonesia, which has thick CBM formations.

scholarly journals PERHITUNGAN GAS IN PLACE DAN RECOVERY FACTOR PADA LAPANGAN CBM SUMUR X

PETRO ◽  
2019 ◽  
Vol 8 (3) ◽  
pp. 131
Author(s):  
Yusraida Khairani Dalimunthe ◽  
Def Marshal ◽  
Ratnayu Sitaresmi
Keyword(s):  
Coalbed Methane ◽  
Coal Sample ◽  
Curve Analysis ◽  
Volumetric Method ◽  
Recovery Factor ◽  
Coal Bed ◽  
Coal Bed Methane ◽  
Field Development ◽  
Methane Gas ◽  
Coalbed Methane Reservoir

<em>The Coal Bed Methane well X is a field developed by company A where 5 CBM test wells have been drilled. This CBM field development in 2004 by drilling wells to a depth of 3000ft, then in 2006 drilling was carried out for three test wells with an average depth of 3000ft. The research conducted at LEMIGAS aims to calculate coalbed methane reservoir reserves, calculation of reserves per seam, recovery factor, from each coal sample. The volumetric method is used in this research to calculate the methane gas reserves and Langmuir curve analysis is used to calculate the recovery factor. The target of this research is the CBM field in well X, where the well has 3 seams, namely seam-2, seam-3, and seam-4. In addition to calculating the value of methane gas reserves for each well, the methane gas reserves for each seam are also calculated. From the results of the calculation, it can be concluded that the largest value of gas in place is on seam 4 which is 573.2 MMscf and the smallest is on seam 2 which is 176.1 MMscf, then the largest recovery factor value is owned by seam 3 which is 91%.</em>

scholarly journals CH4Separation from Coal Bed Methane by Hydrate in the SDS and THF Solution

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Jianzhong Zhao ◽  
Yangsheng Zhao ◽  
Weiguo Liang
Keyword(s):  
Gas Separation ◽  
Separation Efficiency ◽  
Hydrate Formation ◽  
Separation Process ◽  
Coal Bed ◽  
Coal Bed Methane ◽  
Gas Mixture ◽  
Methane Gas ◽  
Temperature And Pressure ◽  
Better Than

Hydrate-based separation experiments on simulate coal bed methane gas have been conducted in THF solution and SDS solution. In this work, a novel hydrate-based gas separation process was used to enhance CH4separation from a 65.7% CH4/20.2% N2/O2gas mixture in the presence of 300 ppm SDS and 19% THF solution. The characteristics of the CH4separation efficiency, fluctuation of temperature, and pressure were studied at different promoter solution. It was found that hydrate formation was induced by promoter in the solution and occurred immediately as the experiments were started. THF performed better than SDS for CH4separation from the CH4/N2/O2gas mixture. In particular, the separation coefficients of CH4and N2were compared in two solutions. The gas mixture S.Fr. or CH4recovery is increased from 1.056 to 1.259 while SF of N2is decreased from 1.183 to 0.634 in THF solution.

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