Petroleum Reservoir Evaluation and Development >
2020 , Vol. 10 >Issue 4: 12 - 16
DOI: https://doi.org/10.13809/j.cnki.cn32-1825/te.2020.04.002
Resource assessment and exploration potential analysis of CBM in Hongguo Block, western Guizhou
Received date: 2019-09-25
Online published: 2020-08-07
In order to evaluate the CBM exploration potential of Hongguo Block, the basic geological conditions for the enrichment of CBM reservoirs were analyzed from the aspects such as stratigraphic distribution, coal quality, physical characteristics, gas-bearing capacity and preservation conditions by the data of coal drilling and CBM wells. And then the resource potential of CBM was preliminarily accessed. Finally, the favorable gas-rich areas were further optimized. Results show that coal bed in Hongguo Block has the characteristics of moderate burial depth（500~1 200 m）, large accumulated thickness（10.3~25.8 m）, moderate thermal maturity（0.9 %~2.0 %） and high gas content（10.8~26.3 m 3/t）, with superior geological conditions of CBM accumulation. By the comprehensive evaluation, the favorable CBM area is about 260 km 2 and the amount of resource is about 422×10 8 m 3. The most favorable area type I1 is located in the east of Panguan syncline, with high thermal evolution degree, developed cleavage and fissure, high pressure coefficient, and superior preservation conditions, which is the primary target area for the next CBM exploration.
Key words： Hongguo Block; CBM; resource assessment; exploration potential; Panguan syncline
Dehua ZHOU , Qianwen LI , Xunyu CAI , Gang CHEN . Resource assessment and exploration potential analysis of CBM in Hongguo Block, western Guizhou[J]. Petroleum Reservoir Evaluation and Development, 2020 , 10(4) : 12 -16 . DOI: 10.13809/j.cnki.cn32-1825/te.2020.04.002
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