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《Acta Sedimentologica Sinica》 2005-03
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Experimental Simulation on Oil-Water-Rock Interaction in the Deep Bonan Sub-sag

GONG Xiu-mei 1,2 ZENG Jian-hui 1,2 JIN Zhi-jun 3 1(Basin & Reservoir Research Center, University of Petroleum, Beijing 102249) 2(Key Laboratory of Hydrocarbon Accumulation Mechanism of Education Ministry, Beijing 102249) 3(Institute of Exploration & Development of SINOPEC, Beijing 100083)  
One dimension experimental apparatus composed of fluid input/output system, experimental nomenon, T/P controlling system, as one of the very effective methods studying the subsurface hydrocarbon origin, migration, accumulation and reservoir reconstruction is adopted to simulate oil migration and accumulation in deep zones in this paper. And the interaction of oil-water-rock under actual high temperature and high pressure (120℃, 45MPa) was simulated. The results showed that many changes including their chemical components and rock inner structure etc., under certain temperature and pressure, occurred during petroleum migration from the bottom up along the apparatus with the increased charging quantities, and interaction with sandstone and formation water in apparatus. And the specific changes were as follows: 1. Many changes took place in the rock structure and its chemical components of inner hydrocarbon. Vertically, saturated hydrocarbon content of oily-sands gradually increased from the bottom up, and the peak value12.78%. And the biomarkers and family components of all samples derived from experiment show the existence of geochromatographic effect during the oil migration along the apparatus. 2. A certain extent dissolution has acted on mineral component of oily-sands during the oil-water-rock interaction, and it strengthens gradually during hydrocarbon migration from the bottom up along the apparatus. Just because of this dissolution, the property of deep reservoirs with low porosity and permeability has been greatly improved, and it supplies effective space for deep hydrocarbon migration and accumulation.
【Fund】: AAPG Foundation2002GrantsinAid Projects“Physical Simulationon Mechanism of Hydrocarbon Migration and Entrapmentin Deep Zones with High Temperature and Overpressure”部分成果.
【CateGory Index】: P618.13
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