On August 16th, China National Offshore Oil Corporation (CNOOC) announced that China’s first large-scale development project of thin coalbed methane, the Panhe Thin Coalbed Methane Development Project, has been fully completed and put into operation, marking a new breakthrough in the large-scale development of thin coalbed methane in China. This provides an important theoretical basis for the efficient development and utilization of thin coalbed methane, and is of great significance for promoting the efficient development and utilization of coalbed methane in China and ensuring national energy security.
The Panhe Thin Coalbed Methane Development Project is located in the southern part of the Qinshui Basin in Shanxi Province. There are a total of 212 wells built, with a maximum daily production of 11000 cubic meters per well and an average daily production of over 2500 cubic meters. Since the trial production at the end of 2020, the cumulative production of thin coalbed methane in the Panhe block has reached 180 million cubic meters, and the daily production proportion has climbed to half of the total production of the block, successfully achieving efficient conversion from reserves to production.
In recent years, due to the dual impact of coal resources and high development, in order to achieve the replacement of production capacity, CNOOC has continuously increased its efforts to tap the potential and conducted concentrated research on thin coal seams, forming a series of technological innovations such as thin coal seam identification, complex well network deployment optimization, large-span multi-layer fracturing, dual pressure and dual control drainage, and constructing a three-dimensional exploration and development technology system for thin coalbed methane. For the first time in China, CNOOC has achieved resource extraction and storage of thin coalbed methane, To achieve efficient utilization of ‘marginal resources’.
Post time: Aug-19-2023