Occurrence Condition Research Of Shaoyang, Hunan Provence Duanpiqiao Mine Area CBM

Shaoyang City for a short-Pei bridge complete coal mining syncline, the construction of coal formed in the late Permian Longtan Formation, a lagoon environment for the development of coastal delta deposits, coal conditions are better, During this period the region formed by 1,3-seam horizon steady thickness smaller capacity of 74 million tons of coal resources more than the area for the high outburst gas mining, coal bed methane resources, abundant, and therefore short-Pei Bridge mining area Formation mechanism and the occurrence of conditions conducive to evaluation of coalbed methane resources in the area and identify the next hole CBM parameters of construction area and the area of CBM development and utilization of reliable geological basis, but also for Hunan CBM learn basic research work has meaning.In this paper, a comprehensive collection and analysis of past geological research results, based on a theoretical study and practical method of combining exploration, mining of CBM short Pei bridge formation mechanism and conditions for the occurrence of a comprehensive analysis of the system that the area Seam stable synclinal basin structure and form of the occurrence of coalbed methane reservoir for the area provides a favorable condition; the area has good reservoir characteristics of coal gas and the absorption of; the area distribution of gas content performance of coal with gas content increases linearly with depth; area seam gram size, or the reservoir pressure and permeability of coal permeability coefficient shows that the mine coalbed methane reservoir with good reservoir conditions. The construction of coal-bearing area, closed conditions and hydrodynamic conditions on the coalbed methane is extremely favorable.In this paper, "Coalbed Methane Resources/Reservesnorms" DZ/T0216-2002 method to determine the volume of coalbed methane reserves. Preliminary estimate in the area amounted to 2.07 billion cubic meters coalbed methane resources.Mining Area Based on the actual short-Pei Drilling Project data sampling was conducted to determine the synclinal axis in the largest area for the gas content, including the Ministry of the syncline is a turning point in the middle region with the highest gas content, coal bed methane exploration and development is the next step The main target areas.