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Evaluation of Hydrocarbon Yield of Organic Matters with Hydrocarbon Generation Kinetics Method: An Example from the K 1 qn Formation of the Songliao Basin
Author(s) -
WANG Wenguang,
LU Shuangfang,
WANG Min,
ZHENG Min,
HUANG Aihua,
WANG Zhiwei,
JI Tianliang
Publication year - 2015
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/1755-6724.12307_21
Subject(s) - hydrocarbon , yield (engineering) , kinetics , structural basin , hydrocarbon mixtures , chemistry , environmental science , petroleum engineering , geology , organic chemistry , thermodynamics , paleontology , physics , quantum mechanics
Hydrocarbon yield from organic matters is the one of the key parameter of petroleum resource assessment. Previous methods of hydrocarbon yield from organic matters included thermal simulation experiment method, element conservation method and hydrocarbon generation kinetics method (Liu et al, 2006; Tang et al, 2013). Among them are the following, thermal simulation experiment method is divided into open system experiment apparatuses (autoclave apparatuses, gold tube pyrolysis apparatuses, MSSV apparatuses), closed system experiment apparatuses (Rock Eval apparatuses and TG MS apparatuses) and semi open system experiment apparatuses (thermal simulation apparatuses of generation and expulsion hydrocarbon of direct pressure type, self purging system apparatuses and compaction system experiment apparatuses), this method is based on the temperature time complementary principle. Through the simulation of the generation hydrocarbon process of organic matters, we obtain the hydrocarbon yield from organic matters under the experimental conditions, the advantages of this method is simple, the disadvantage is that the hydrocarbon yield evaluated by the different thermal simulation apparatuses, the different experiment method and the different experiment condition (add water, no water, pressure, no pressure) are different, andit is difficult to determine which kind of experiment methods to measure the hydrocarbon yield more accurate. Element conservation method is based on element conservation theories, an alternate method is introduced, which can establish the hydrocarbon yield from organic matters according to a thorough H/C atomic ratio changes (Zhang, 2007), this method is easier compared with the thermal simulation experiment method; But elements (C, H , O) determination is constrained by the rock samples and the funding, which can not meet the accuracy and the comprehensiveness. Hydrocarbon generation kinetics method, based on the thermal simulation experiment data from organic matters and crude oil, used the calibration model of hydrocarbon generation kinetics parameter, obtained the kinetic parameters of different kerogen types, combined with the burial history in the study area for dynamic geological extrapolation, implemented the purpose that the hydrocarbon yield under the experimental conditions was in consistency with the hydrocarbon yield under the geological conditions, which got in line with the geological understanding of the hydrocarbon yield. This paper has built the hydrocarbon yield evaluation method and the chart from organic matters that was constrained by the thermal simulation experimental data, the kinetics dynamics theory, and the actual geological target data (the burial history, the thermal history, hydrocarbon generation threshold depth), implemented the purpose that the hydrocarbon yield from organic matters was in agreement with the hydrocarbon threshold depth and the degree of thermal evolution of organic matters, and had a solid theoretical foundation and strong applicability.