By Pramod Thakur
Advanced Reservoir and construction Engineering for Coal mattress Methane offers the reader with layout structures that may maximize creation from world wide coal mattress methane reservoirs. Authored by means of a professional within the box with greater than forty years of’ adventure, the writer starts off with a lot wanted introductory fundamentals on gasoline content material and diffusion of fuel in coal, the most important for an individual within the mining and common gasoline industries.
Going a step extra, chapters on hydrofracking, horizontal drilling know-how, and construction suggestions deal with the demanding situations of dewatering, low construction charges, and excessive improvement charges. This ebook systematically addresses all 3 zones of creation degrees, shallow coal, medium intensity coal, and deep coal with assurance on gasoline extraction and construction from a intensity of 500 toes to upwards of 10,000 ft, thoughts which can't be present in the other reference book.
In addition, helpful content material on deep coal seams with content material on more advantageous restoration, a dialogue on CO2 flooding, infra-red heating or even in-situ combustion of degassed coal, giving engineers a better knowing on how today’s shale actions can relief in bettering construction of coal mattress for destiny usual fuel construction.
- Delivers the way to get well and degas deeper coal seams whereas decreasing improvement costs
- Addresses either sorption strategy and irreducible fraction of fuel in coal, with examples according to the author’s forty plus years of direct experience
- Explains how an identical ideas used for creation from deep shale job can produce fuel from deep coal turns out with assistance from better restoration, resulting in elevated fuel production
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Additional resources for Advanced Reservoir and Production Engineering for Coal Bed Methane
All rights reserved. 61 62 Advanced Reservoir and Production Engineering for Coal Bed Methane Africa. Estimation of elastic modulus and poisson ratio of coal seams by sonic logging is discussed. Finally, derivation of bulk modulus, shear modulus, and relationship between various elastic properties is presented. Elastic modulus and shear modulus are needed to design a successful hydrofracturing job. All underground coal seams have a gas pressure that keeps the gases adsorbed in coal. This is generally called “pore pressure” and designated by σ0.
REFERENCES  Yee D, et al. In: Law RE, Rice DD, editors. Gas sorption on coal and measurement of gas content, in hydrocarbons from coal. Tulsa: AAPG; 1993. p. 159À84.  Bertard C, et al. Determination of desorbable gas concentration of coal. Int J Rock Mech Min Sci 1970;7:43À65.  Kissell FN. The direct method of determining methane content of coal beds for ventilation design, US Bureau of Mines, RI 7767, 1973. p. 17. Gas Content of Coal and Reserve Estimates 31  Diamond WP, Schatzel SJ.
6) 5 V Vm b Vm The term “b” is experimentally found to be equal to 1/PL, where PL is the characteristic pressure that corresponds to Vm/2 on the gas isotherm. Thus Eq. 7) 5 V Vm Vm If the isotherms shown in Fig. 3 are replotted with P/V on the y axis and P on the x axis, a straight line is obtained. The plot for the Pocahontas #3 seam is shown in Fig. 4. The slope of the line is 1/Vm, from which Vm can be determined. The intercept on the y axis is PL/Vm, from which PL can be determined. Calculated values of PL and VL for all gas isotherms shown in Fig.