Deep CBM resources with great potential is an important area of CBM exploration and development in China. After more than 10 years of research and exploration

Sinopec East China Oil Gas Company has made positive progress in basic geological theory research and low-cost engineering technology research of deep CBM. The first deep coalbed methane field in South Yanchuan put into commercial development in China has been built

the geological theory of "five factors" for coordinated control of deep CBM enrichment and high production has been established

a refined drainage system for deep CBM has been formulated

the low-cost engineering technology of deep CBM has been integrated

many low-cost exploration and development technologies of deep CBM dynamic evaluation and zonal management have been established

the development technology strategy of deep coalbed methane has been basically formed

and an economical and effective mode of exploration and development has been explored. All these above contribute to the realization of the benefit development for deep CBM. However

the exploration and development of deep CBM in China is still in its infancy and exploration stage. In the practice of exploration and development

there are still many challenges

such as theoretical innovation

technological breakthrough

and benefit development. Specifically

①Deep CBM has strong geological heterogeneity

and the development engineering technology is not fully suitable for the change of unique geological characteristics; ②Some gas wells have short stable production period

rapid decline

and long-term low production effective production; ③The vertical resources need to be further evaluated

and the gas field reserves are not fully utilized. In order to solve the above problems

three countermeasures are put forward: ①innovating and applying the effective scale fracturing technology research under the geological conditions of high stress and low permeability of deep coal seam to achieve the increase of production

cost reduction and efficiency; ②deepening the analysis of the main causes of low efficiency

and taking the removal of blocking and dredging as the direction of governance; ③strengthening the potential evaluation of deep CBM resources and the development technology of applicability so as to improve the development of reserves and maintain the vitality of the gas field.