Pramod Thakur's Advanced Reservoir and Production Engineering for Coal Bed PDF

By Pramod Thakur

ISBN-10: 012803095X

ISBN-13: 9780128030950

ISBN-10: 0128030968

ISBN-13: 9780128030967

Advanced Reservoir and creation Engineering for Coal mattress Methane offers the reader with layout structures that might maximize creation from all over the world coal mattress methane reservoirs. Authored via a professional within the box with greater than forty years of’ event, the writer begins with a lot wanted introductory fundamentals on gasoline content material and diffusion of fuel in coal, the most important for somebody within the mining and average fuel industries.

Going a step extra, chapters on hydrofracking, horizontal drilling know-how, and construction concepts handle the demanding situations of dewatering, low creation premiums, and excessive improvement expenses. This publication systematically addresses all 3 zones of construction degrees, shallow coal, medium intensity coal, and deep coal with insurance on gasoline extraction and creation from a intensity of 500 ft to upwards of 10,000 toes, thoughts which can't be present in the other reference book.

In addition, useful content material on deep coal seams with content material on more suitable restoration, a dialogue on CO2 flooding, infra-red heating or even in-situ combustion of degassed coal, giving engineers a better realizing on how today’s shale actions can reduction in improving creation of coal mattress for destiny usual gasoline creation.

  • Delivers how you can recuperate and degas deeper coal seams whereas decreasing improvement costs
  • Addresses either sorption technique and irreducible fraction of gasoline in coal, with examples in accordance with the author’s forty plus years of direct experience
  • Explains how an identical concepts used for construction from deep shale job can produce fuel from deep coal turns out with assistance from superior restoration, resulting in elevated gasoline production

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Additional resources for Advanced Reservoir and Production Engineering for Coal Bed Methane

Example text

2 Impact of Pressure on the Diffusivity Coefficient In general, the diffusion coefficient is inversely proportional to pressure. This is also an observed fact: gas production rates from coal seams tend to increase as the reservoir pressure goes down. This is because of increased diffusivity as well as increased permeability, as discussed in Chapter 3, Porosity and Permeability of Coal. The abandonment time of coal bed methane wells is thus extended since the wells produce longer than anticipated.

Handbook of natural gas engineering. New York, NY: McGraw-Hill Book Company; 1958. [11] Gui X, Meng X. Application of coal gas permeability factor and gas transportation. Chin J Min Saf Eng 2008. [12] Li X, et al. Coal Operators Conference In: Aziz N, editor. Analysis and research on the influencing factors of coal reservoir permeability. University of Wollongong; 2008. p. 197À201. 4 Effective Diffusivity of a Mixture of Gases References 53 57 57 58 58 58 58 59 59 Abstract The complex flow of gases from the coal matrix is basically controlled by (1) diffusion of gas from coal following Fick’s law and (2) Laminar flow of gases through the fractures in coal following the Darcy’s law or pressure-dependent flow.

In this technique, a core plug under confining pressure is brought to an equilibrium pressure. Next, a pressure pulse is imposed on the upstream side of the plug, and the pressure decay and the build-up are recorded over time on the upstream and downstream sides, respectively. The change in the pressure pulse with time is then analyzed to estimate the permeability. The natural logarithm of pressure is plotted against time. The slope of the plot is a function of permeability, and a transient Laplace equation is used to calculate permeability [4].

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Advanced Reservoir and Production Engineering for Coal Bed Methane by Pramod Thakur

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