The Sha'er Member of Chengbei low step fault zone of southern Qikou Sag is braided river delta frontier sedimentation with thin reservoir and complicated sand bodies occurrence. To have a more precise description of sand bodies' dimension, this paper uses deterministic constrained sparse spike inversion and stochastic geostatistics to study the plan distribution of sand bodies, and applies high solution loggings to mark their vertical dimension by using optimized inversion parameters. Rock's properties are analyzed; gamma and sonic curve are used to reconstruct sonic curve. According to seismic data and sedimentary environment, multiple wavelet extraction and multiple fine calibration are used to recognize its sandmud structure. Appropriate variogram model is selected to simulate the spatial distribution of sand bodies. The inversion results combined with optimized parameters can increase the precision while reducing the uncertainty in predicting; it is an effective way in predicting the thin reservoir.
This paper, based on Guizhou's Baibu coalfield's coalbed distribution, geology and resource, uses CBMSIM software to simulate the coalbed methane production capacity of the major coalbed, and analyzes its similarity with Guanzhai coalfield in reservoir and Guanzhai GZ01's ground coalbed methane test. Baibu coalfield owns many favorable conditions like many minable beds, high content of coalbed methane, high quality, good absorption, big resource and high concentration, but unfavorable in poor permeability, and lower pressure gradient. According to GZ01, Baibu may be of big production capacity where there are favorable geology and reservoir conditions. In general, Baibu coalfield is of good coalbed methane reservoir and geology, it is of potential to develop ground coalbed methane. This study offers technical supports and references for southwestern China in ground coalbed methane development and handling gas.
This paper uses SAM to measure the multiple effect of coal supply change of coal area to other areas and other departments, which is decomposed via path analysis so as to identify the conducted basic path and compound path and key node departments. The main basic path is coalelectricity path, only limited inside the province. Changes in coal supply impact industrial sectors with multiple compound paths, such as coalchemicals path, coaloil path, coalmetallurgy path, etc. The major node departments include chemicals industry, metallurgy, nonmetallic mineral products, transportation, and warehousing. Reform of Chinas coal supply shall be focused on planning coalelectricity, differentiating coal uses, supporting technical innovation, establishing modern energy storage and transportation network, optimizing electricity transporting channels, differentiating coalrelated industries to reduce their impacts on macroscopic economy.
