doi:

DOI: 10.3724/SP.J.1249.2017.03221

Journal of Shenzhen University Science and Engineering (深圳大学学报理工版) 2017/34:3 PP.221-228

Selection of pilot areas for testing in-situ conversion/upgrading processing in lacustrine shale: a case study of Yanchang-7 member in Ordos Basin


Abstract:
Compared with the multi-stage horizontal well fracturing technology facilitating development of shale gas and tight oil, in-situ conversion/upgrading processing is more suitable for development of liquid hydrocarbons in broad continental shale formations with the maturity of 0.5%-1.0% and total organic carbon of over 6% in China. This technology has several unique advantages including wide applicability to various geologic conditions, underground conversion to light oil, high oil recovery, and lower environmental pollution. Based on the requirements of this technology, together with key geologic parameters of Yanchang-7 shale, including thickness, organic matter abundance, thermal evolution degree, and burial depth, the pilot areas are selected in the southeastern part of the basin, with area of over 6 000 km2 and buried depth less than 1 500 m. The selection result of the pilot areas indicates that, the lacustrine shales in the Ordos Basin will be favourable shale areas for the industrial test of in-situ conversion/upgrading processing.

Key words:shale oil,liquid-rich shale,lacustrine shale stratum,in-situ conversion processing,in-situ upgrading processing,Ordos Basin,resource potential,tight oil

ReleaseDate:2017-06-16 14:08:42



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