Numerical modeling of Gondwana coal seams in India as coalbed methane reservoirs substituted for carbon dioxide sequestration

Vishal, Vikram; Singh, Lokendra; Pradhan, Sarada Prasad; Singh, T. N.; Ranjith, P.G.

doi:10.1016/j.energy.2012.09.045

Cited by 96 publications

(41 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nearly 99% of the total coal reserves in India are found in the Gondwana basins and are characteristically different from the rest of Tertiary coal. The major focus of research and development in the CBM sector has been based mainly on the Gondwana coals [6]. The development of CBM was first initiated with exploration in the Raniganj basin and the drilled wells indicated sufficiently thick rock strata in the Barakar formation.…”

Section: Cbm Scenario In India: Special Reference To Gondwana Supergroupmentioning

confidence: 99%

“…With vast reserves of coal in the world at deep levels, opportunities for geological sequestration of greenhouse gases (GHGs) in these strata are being studied [1][2][3][4][5]. India is one country which is making progress in research on carbon storage in coal [6,7]. At the same time, India has witnessed the development of coal-bed methane (CBM) since the initiation of successful exploration for the gas in the early 1990s.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Influence of sorption time in CO 2 -ECBM process in Indian coals using coupled numerical simulation

Vishal

Singh

Ranjith

2015

Fuel

Self Cite

142

View full text Add to dashboard Cite

Section: Cbm Scenario In India: Special Reference To Gondwana Supergroupmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of sorption time in CO 2 -ECBM process in Indian coals using coupled numerical simulation

Vishal

Singh

Ranjith

2015

Fuel

Self Cite

142

View full text Add to dashboard Cite

“…The content of geostatistics is defined and extended by key words such as numerical evaluation, spatial distribution, stochastic modeling, and reservoir characterization (Deutsch 2002;Sarkar et al 2012;Vishal et al 2013Vishal et al , 2015. Geostatistics provides stochastic approaches to integrate data at different scales and quantify the uncertainty at unsampled locations, and hence can provide meaningful results for model building and quantitatively assess uncertainty of risk management (Yarus and Chambers 2006).…”

Section: Introductionmentioning

confidence: 99%

Geostatistical modeling for fine reservoir description of Wei2 block of Weicheng oilfield, Dongpu depression, China

et al. 2015

View full text Add to dashboard Cite

The Wei2 block of Weicheng oilfield is characterized by complicated structure mainly caused by high degree of fault development. Multiple reservoir types are found in this block and the reservoir heterogeneity is severe. The oil and gas reservoirs have already stepped into the stagnant stage of a great water-cut degree together with a rapid production decline rate. Thereby, both stabilizing the oil and gas production and optimizing adjustment for further exploitation make it urgent for geomodelers to build a useful model to predict the inter-well parameters and the distribution of the remaining oil and gas. A three-dimensional geological model established with the help of stochastic modeling technique may provide a perfect window and carrier for fine structure interpretation and reservoir heterogeneity description, compared with a traditional two-dimensional model. Hence, based on stratigraphical layering points, significant surfaces and fault points as well seismic interpretation, an integrated structure model is developed. Using the truncated Gaussian simulation and taking the existing geological maps as references, the sedimentary microfacies model was successfully constructed. Through the use of sequential Gaussian simulation method and the facies-controlled modeling method, the reservoir physical properties are populated. Meanwhile, the comparison between facies-controlled and non-facies-controlled property models indicates that the former is more loyal to previous researching and the representation of heterogeneity is ideal. Finally, the ideas of sample density and reserves fitting are proposed to evaluate the practicability and accuracy of the property models.

show abstract

“…The burning of fossil fuels has brought emissions of carbon dioxide (CO 2 ) from pre-industrial revolution times of 280 ppm (parts per million) to 400 ppm at present (Wigand et al 2009;Bala 2013). Greenhouse gas emission can be reduced by some options such as improving the energy conversion efficiency of fossil fuels, shifting energy production to low carbon sources, enhancing uptake by terrestrial and marine biomass, and capturing and storing CO 2 deep underground (Bruant et al 2002;Vishal et al 2013). Of all the available solutions, carbon capture and storage (CCS) is a viable method for long-term reduction of greenhouse gases (Westrich et al 2002;Siggins 2006;Busch et al 2016;Verma and Sirvaiya 2016).…”

Section: Introductionmentioning

confidence: 99%

Geopolymer as well cement and its mechanical integrity under deep down-hole stress conditions: application for carbon capture and storage wells

Nasvi

Rathnaweera

Padmanabhan

2016

Geomech. Geophys. Geo-energ. Geo-resour.

View full text Add to dashboard Cite

With regard to the safety, environmental impact and sustainability of carbon capture and storage (CCS) projects, the integrity of injection and production wells plays a major role. In a CCS project, mechanical integrity of well cement should be maintained to sustain the required mechanical strength throughout the life of an oil/gas and CO 2 sequestration well. One of the major issues with existing Portland cement based oil well cement is cement degradation in CO 2 -rich environment. On the other hand, geopolymer cement possesses excellent acid resistant characteristics, shows higher mechanical strength and durability and demonstrates lower permeability. Therefore, this research work focused on studying the mechanical integrity of geopolymers under two different down-hole conditions: (1) effect of CO 2 on mechanical behaviour of geopolymers and (2) hydraulic fracturing of geopolymers to study the mechanical integrity under down-hole stress conditions. To study the mechanical integrity under CO 2 rich environment, geopolymers were tested in CO 2 chamber at a pressure of 3 MPa for up to 6 months and compressive strength and microstructural testings were conducted. It was noted that strength values of geopolymers did not change significantly in CO 2 environment for 6 months. There were only about 2 % variations in compressive strength values in CO 2 compared to the initial strength value. Scanning electron microscopy (SEM) test results revealed that there is no significance variation in the microstructure of geopolymer after 6 months in CO 2 . For hydraulic fracturing experiment, four different tests were conducted with various injection pressure (P in ), axial stress (r 1 ), confining pressure (r 3 ) and tube length (30 and 40 mm). Geopolymers could not be fractured in any of the four tests, in which maximum values of P in of 23 MPa and r 1 of 59 MPa were used. There was no fracture development in geopolymers despite maximum ratios of P in /r 3 of 3.8 and r 1 /r 3 of 13.3 was tested. Tests could not be repeated with higher ratios of P in /r 3 and r 1 /r 3 due to the limitation with the triaxial set-up used. Since there is no fracture development in geopolymers at higher ratios of P in / r 3 and r 1 /r 3 , it is concluded that required mechanical integrity can be observed when geopolymers are used as well cement.

show abstract

Numerical modeling of Gondwana coal seams in India as coalbed methane reservoirs substituted for carbon dioxide sequestration

Cited by 96 publications

References 44 publications

Influence of sorption time in CO 2 -ECBM process in Indian coals using coupled numerical simulation

Influence of sorption time in CO 2 -ECBM process in Indian coals using coupled numerical simulation

Geostatistical modeling for fine reservoir description of Wei2 block of Weicheng oilfield, Dongpu depression, China

Geopolymer as well cement and its mechanical integrity under deep down-hole stress conditions: application for carbon capture and storage wells

Contact Info

Product

Resources

About