Estimation of promising areas with the aim of methane accumulations exploration (on the example of mine “Butovska”)

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Authors:

V.V. Lukinov, Dr. Sci. (Geol.-Min.), Professor, N.S. Polyakov Institute of Geotechnical Mechanics of National Academy of Science of Ukraine, Deputy Director for Science of IGTM NAS of Ukraine, Dnipropetrovsk, Ukraine

K.A. Bezruchko, Cand. Sci. (Geol.-Min.), Senior Research Fellow, N.S. Polyakov Institute of Geotechnical Mechanics of National Academy of Science of Ukraine, Senior Research Fellow, Dnipropetrovsk, Ukraine

O.V. Prikhodchenko, N.S. Polyakov Institute of Geotechnical Mechanics of National Academy of Science of Ukraine, Chief Engineer, Dnipropetrovsk, Ukraine

V.Yu. Shpak, State Enterprise “Makiivvugillia”, Chief Geologist, Makiivka, Ukraine

Abstract:

Purpose. To estimate reasonability of free methane accumulations prospecting at mine “Butovska” owned by State Enterprise “Makiivvuhillia”.

Methodology. The research was carried out by means of mapping of local structures by method of trend analysis. Two local anticline structures (eastern and western) can be traced on a map of local structures according to the seam hypsometry deviation from the approximating surface. By the main structure parameters (amplitude and width) and thickness of sandstones calculations of relative linear deformation and relative volumetric deformation for the eastern and western local anticline structures were performed.

Findings. Based on the data and mean value of the ratio of open porosity calculation of crack porosity, absolute gas permeability, the ratio of effective porosity and minimum relative gas saturation was carried out. In local anticline structures in the field of mine “Butovska” at a depth of up to 1,000–1,100 m above the coal seam n1 possible presence of crack-pore reservoirs had been established.

Originality. Methods of predictive estimation of local anticline structures in coal-bearing series for availability of gas deposits were suggested. Perspective areas for production of associated methane were selected in mine “Butovska”.

Practical value. Expected reserves of methane in areas of potential accumulation of free methane were estimated. Gas emission happened on December 23, 2008 from sandstone n1Sn11 confirmed the presence of gas accumulations. Gas emission was observed for a long time and total flow of methane exceeded 650,000 m3.

References:

1. Лукинов В.В. Горно-геологические условия образования скоплений свободного метана на угольных месторождениях / Лукинов В.В. // Науковий вісник НГУ – Днепропетровск, № 4, 2007. – С. 55–59.

Lukinov, V.V. (2007), “Mining and geological terms of formation of accumulations of free methane in coal deposits”, Naukovyi visnyk Natsionalnoho hirnychoho universytetu, no.4, pp. 55–59.

2. Скупчення вільного метану у непорушеному вуглепородному масиві. Методика прогнозування зон та визначення їх параметрів: СОУ 10.1.05411357.004: 2005.– К.: Мінвуглепром України, 2005– 12 с.– (Нормативний документ Мінвуглепрома України)

Accumulations of free methane in an undisturbed coal rock massive. Method of prognostication of areas and determination of their parameters (2005): SOU 10.1.05411357.004:2005. Ministry of Coal Industry of Ukraine, (Normative Document of Ministry of Coal Industry of Ukraine)

3. Безручко К.А. Оценка пористости горных пород в локальных антиклинальных структурах / Безручко К.А. // Геотехническая механика: Межвед. сб. научн. тр. / ИГТМ НАН Украины. – Днепропетровск, 2008. – Вып. № 80. – С. 77–83.

Bezruchko, K.A. (2008), “Estimation of rocks porosity in the local anticline structures”, Geotekhnicheskaya mekhanika, published by IGTM NAS of Ukraine, no.80, pp. 77–83.

4. Безручко К.А. Изменение газонасыщенности пород при разуплотнении горного массива / Безручко К.А. // Геотехн. механика. – Днепропетровск, 2007. – № 73. – С. 220–223.

Bezruchko, K.A. (2008), “Change of rocks gas content in the volume expansion zones of a rock massif”, Geotekhnicheskaya mekhanika, published by IGTM NAS of Ukraine, no.73, pp. 220–223.

5. Лукинов В.В. Формування проникності гірських порід у локальних антиклінальних структурах / В. В. Лукинов, К. А. Безручко // Зб. наук. пр. УкрДГРІ. – 2009.– № 1–2.– С. 106 –110.

Lukinov, V.V. and Bezruchko, K.A. (2009), “Formation of rocks permeability in local anticline structures”, Scientific proceedings of UkrSGRI, no.1–2, pp. 106–110.

6. Иофис М.А. Инженерная геомеханика при подземных разработках / М.А. Иофис, А.И. Шмелёв. – М.: Недра, 1985. – 248 с.

Iofis, M.A. and Shmelev, A.I. (1985), Inzhenernaya geomekhanika pri podzemnykh razrabotkakh [Ingineering Geomechanics for Underground Developments], Nedra, Moscow, Russia.

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Khanin, A.A. Porody-kollektory nefti i gaza i ikh izuchenie [Rocks-Reservoirs of Oil and Gas and Their Study], Nedra, Moscow, Russia.

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