1. Australia is awash with deals involving coal-bed methane.

2. Development and integrative utilization of coal-bed gas faces many concrete technical problems to study and solve.

3. At present, the technique of coal-bed methane surface mine and gas drainage was mature, so it was feasible for coal-bed methane development and utilization in Sichuan Province.

4. coal-bed methane accounts for about 2 % of the world's natural - gas supply.

5. The exploitation and utilization of coal-bed methane were analyzed, and the successful experience was introduced.

6. Exploration and development of coal-bed methane in China has its particularity for its geological conditions of coal-forming process and coalification are different from the US.

7. And PetroChina officials are exploring new shale gas and coal-bed methane opportunities over the country.

8. In addition, the effects of well-spacing and the fracture half-length on the production of coal-bed methane are alsoobvious.

9. The technique of directional pinnate horizontal wells, which joints the drilling, completion and stimulation jobs together, adapts to exploit coal-bed gas with low permeability.

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10. On this basis, the statistical calculation and correlation analysis between the passive SLF electromagnetic exploration sample data and the coal-bed gas contents were processed.

11. Based on consideration of stress sensitivity of coal seam permeability, the single-phase flow rule of coal-bed gas in coal and cleats is studied by using non-equilibrium adsorption model.

12. According to the economic evaluation, it has better economic benefit to exploit Qinshui coal-bed gas field with directional pinnate horizontal wells.