Microscopic pore structure characteristics analysis of coal reservoir at Longtan formation in Liupanshui area
ZHONG Fang-jun
Abstract：Through the field outcrop, systematic observation and sampling of drilling core, and using testing methods such as high pressure mercury intrusion experiment, the pore structure characteristics analysis of coal reservoir at Longtan formation in Liupanshui area was done, the classification of pores was done as well. The results showed that: based on the mercury withdrawal curve shape, pore structure types at Longtan formation in Liupanshui area could be divided into two categories: wide and large hysteresis loop and closed hysteresis loop.The pore diameters of coal reservoir at Longtan formation in Liupanshui area are mainly the nanometer grade pores whose diameters are equal to or under 0.1μm, meanwhile, the connectivity is good.
Keywords：microscopic pore structurecoal reservoirLongtan formationLiu panshuihigh pressure mercury intrusion experimentmercury withdrawal curve shape
Publication Date：2016-01-01
Pages：4( 6-8,11 )