Thermal stimulation of hydrocarbon generation from the Carboniferous-Permian coal with igneous rock existing conditions
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摘要:
华北地区石炭-二叠系煤系具有良好的油气勘探前景，已发现油气的区域大多发现了侏罗纪闪长玢岩和煌斑岩，石炭-二叠系烃源岩曾在三叠纪或侏罗纪达到生烃门限，但是缺乏成藏条件，油气没有得到保存。渐新世以来，煤系烃源岩得到深埋进入二次生烃演化阶段，并且形成了以煤成气为主、少量轻质油的油气聚集，该煤成气具有异丁烷/正丁烷、环烷烃和芳香烃含量高、乙烷碳同位素重等特点。作者以为在生烃过程中存在侵入岩与烃源岩的相互作用，并且利用热模拟实验的方法考察了煤岩在与侵入岩接触的条件下二次生烃过程，发现气态烃产率明显增加、并且气态烃组成与钻井产出的天然气相似，认为与闪长玢岩和煌斑岩确实参与了煤系烃源岩的生烃作用，指出在评价石炭-二叠系油气勘探时应当考虑这个因素。
Abstract:There is great oil and gas perspective in the coal series of Carboniferous-Permian in the North China. Up to now where oil and gas is discovered, where shallow intrusive rocks are also drilled. The intrusive rocks are mainly diorite porphyrite and lamprophyre. Hydrocarbon source rocks including coal in the Carboniferous-Permian came into hydrocarbon generation threshold primarily during Triassic and Jurassic, but the oil and gas were not preserved because the accumulation condition was not available. Since Eocene the source rocks have been buried bellow the threshold of second hydrocarbon generation, coal-derived gas and some light oil have been accumulated in the Gubei, Suqiao and Linqing areas. The gas is geochemically special with high ratio of isobutene/butane, high content of cycloparaffin and aromatics, heavy carbon isotope composition. The authors believed that interaction between the intrusive rocks and source rocks impressed the second generation of oil and gas from the coal series, conducted a series of thermal simulation on hydrocarbon generation from the coal sample and from the coal mixed with the diorite porphyrite or with lamprophyre, and discovered that the productions of gaseous hydrocarbon were increased notably, the gaseous hydrocarbon compositions were similar to those produced from the drilling wells. They concluded that the intrusive rocks (such as diorite porphyrite and lamprophyre) involved the hydrocarbon generation from the coal series, and suggested that coal-derived gas exploration on the Carboniferous-Permian should consider the factor of intrusive rocks on hydrocarbon generation from the coal-series source rocks.
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图 1
孤北古1井石炭-二叠系闪长玢岩和孤古14井侏罗系煌斑岩与煤系烃源岩的接触关系
Figure 1.
Contact relationships between the Carboniferous-Permian diorite porphyrite in Gubei Gu 1 well or the Jurassic lamprophyre in Gugu 14 well and the coal source rocks
图 2
渤深4井-渤601井侵入岩剖面图
Figure 2.
A profile of intrusive rocks in Boshen 4 well and Bo 601 well
图 3
煤岩二次生烃及其在火成岩影响下的气态烃和液态烃产率变化特征
Figure 3.
Characteristics of liquid and gaseous hydrocarbon yields in second hydrocarbon generation from the coal and the coal with igneous rock existing conditions
图 4
煤岩二次生烃及存在火成岩时二氧化碳产率及其变化特征
Figure 4.
Characteristics of CO2 yields in second hydrocarbon generation from coal and coal with igneous rock existing conditions
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Chang JH, Li XJ and He J. 2005. Researches on characteristics of geochemistry and formation of Wengu 2 well natural gas in Dongpu depression. Natural Gas Geoscience, 16(5): 608-611(in Chinese with English abstract)
Dai JX, Pei XG and Qi HF. 1992. Nature Gas Geology in China (Vol.1). Beijing: Petroleum Industry Press,1-292(in Chinese)
Dai JX, Chen JF, Zhong NN et al. 2003. The Largest Gas Fields and Gas Source in China. Beijing: Science Press, 93-136 (in Chinese with English abstract)
Dai JX. 2005. Potential areas for coal-formed gas exploration in China. Petroleum Exploration and Development, 34(6): 641-645(in Chinese with English abstract)
Fiebig J, Giovanni C, Stefannno C, Andrea R, Jorge S and Johannes CH. 2004. Chemical and isotopic equilibrium between CO2 and CH4 in fumarolic gas discharges: Generation of CH4 in arc magmatic-hydrothermal systems. Geochimica et Cosmochimica Acta, 68(10): 2321-2334
Hu XQ, Jin Q, Wang XH, Lin LM and Wang L. 2009. Genesis of coalbed methane in Gubei area of Jiyang depression. Petroleum Geology Oilfield Development in Daqing, 28(1): 37-40(in Chinese with English abstract)
Jin Q, Xiong SS and Lu PD. 1999. Catalysis and hydrogenation: Volcanic activity and hydrocarbon generation in rift basins, eastern China. Applied Geochemistry, 14(5): 547-558
Jin Q and Zhai QL. 2003. Volcanic and thermal-water activities and hydrocarbon generations in the rift basins, eastern China. Chinese Journal of Geology, 38(3): 342-349 (in Chinese with English abstract)
Jin Q, Wan CL and Zhou FX. 2006. Migration of trace elements from basalts to oil source rocks and its geological significance in Minqiao area of Jinhu depression. Journal of China University of Petroleum (Edition of Natural Science), 30(3): 1-5(in Chinese with English abstract)
Jin Q, Xu L, Zeng Y and Wan C. 2008. Interaction between basalts and oil source rocks in rift basin: CO2 generation. In: Liang DG et al. (eds.). Petroleum Geochemistry and Exploration in the AFRO-ASIAN Region. Taylor & Francis, 127-136
Jin Q, Song GQ and Wang L. 2009a. Generation models of Carboniferous-Permian coal-derived gas in Shengli Oilfield. Petroleum Exploration and Development, 36(3): 358-364(in Chinese with English abstract)
Jin Q, Song GQ, Liang HB, Cheng FQ and Wang L. 2009b. Characteristics of Carboniferous-Permian coal-derived gas in the Bohai Bay Basin and their implication to exploration potential. Acta Geologica Sinica, 83(6): 861-867(in Chinese with English abstract)
Jin Q, Yang K and Wan CL. 2011. Geochemical investigation on intrusion rocks in coal-series source rocks in Carboniferous-Permian under the Jiyang depression. Journal of Geosciences and Environment, 33(2): 111-116 (in Chinese with English abstract)
Liang HB, Jiang SQ, Yang GR, Dan WN and Wang WY. 2002. Study on natural gas type, reservoir forming models and conditions in north Jizhong Depression. China Petrleum Exploration, 7(1): 17-33(in Chinese with English abstract)
Mango FD, Hightower JW and Alan TJ. 1994. Role of transition-metal catalysis in the generation of natural gas. Nature, 368(7): 536-538
Ning ZW, Wang WH, Wen MJ and Li J. 2004. Catalytic effects of transition metals on the generation of hydrocarbon in organic matter. Natural Gas Geoscience, 15(3): 317-302(in Chinese with English abstract)
Peng CS. 2005. The pool-forming condition and character of coal-formed gas in Gubei deeply buried hill of Jiyang Depression. Journal of Ocean University of Qingdao, 35(4): 670-676(in Chinese with English abstract)
Pedentchouk N, Sumner W, Tipple B and Pagani M. 2008. δ13C and δD compositions of n-alkanes from modern angiosperms and conifers: An experimental set up in central Washington State, USA. Organic Geochemistry, 39: 1066-1071
Qiu JS, Wang D, Zeng JH and Melnnes BIA. 1997. Study on trace element and Nd-Sr isotopic geochemistry of Mesozoic potash-rich volcanic rocks and lamprophyres in western Shandong Province. Geological Journal of China University, 3(4): 384-395(in Chinese with English abstract)
Tao KY, Mao JR, Xing GF, Yang ZL and Zhao Y. 1999. Strong Yanshanian volcanic magmatic explosion in East China. Mineral Deposits, 18(4): 712-718(in Chinese with English abstract)
Tilley B and Muehlenbachs K. 2006. Gas maturity and alteration systematics across the Western Canda sedimentary basin from four mud gas isotopic depth profiles. Organic Geochemistry, 37(12): 1857-1868
Wang CL. 2002. Interaction between igneous and source rocks and oil accumulation model in igneous-source rock assemblage in the Dongying depression. Ph. D. Dissertation. Dongying: China University of Petroleum (in Chinese with English summary)
Wan CL, Li JH, Pei WB and Weng FX. 2005. Relationship between the temperature, pressure and geochemistry fields in the intrusive rock in sedimentary basin and oil-gas reservoirs: Taking Chunxi gabbros in Dongying Sag as an example. Journal of Xi'an Shiyou University (Natural Science), 20(1): 26-29(in Chinese with English abstract)
Wang L, Jin Q, Lin LM, Yin CH and Song GQ. 2007. The geochemical characteristics of natural gas and discussion on gas source in Bogu 4 buried hill. Natural Gas Geoscience, 18(5): 715-719(in Chinese with English abstract)
Wang L. 2008. Genetic identification and generation models of deep natural gas in Jiyang and Linqing Super-depression. Ph. D. Dissertation. Tsingtao: China University of Petroleum (in Chinese with English summary)
Wang WX and Zhang HC. 2006. The study on magmatism and its impact to coal metamorphism. Science & Technology Information, (31):45-47(in Chinese with English abstract)
Wang XH, Jin Q, Hu XQ, Chen T, Song GQ, Wang L, Wang J, Lin LM and Chen ZW. 2008. Kinetics of gas from the Pyrolysis of source rock and oil cracking and its application in the genesis of natural gases in Minfeng area of Dongying Sag. Acta Sedimentologica Sinica, 26(3): 525-530(in Chinese with English abstract)
Xu HZ and Zhou XK. 2005. Gas genesis and accumulation history of Wenliu gas pool in Dongpu Sag, Center China. Petroleum Exploration and Development, 32(4): 118-124(in Chinese with English abstract)
Yang CH, Xu WH and Yang DB. 2006. Petrogenesis of the Mesozoic high-Mg diorites in west Shandong: Evidence from chronology and Petro-geochemistry. Earth Science, 31(1): 81-92(in Chinese with English abstract)
Zhang J and Shi YL. 1997. The Thermal modeling of magma intrusion in sedimentary basins. Progress in Geophysics, 12(3): 55-64(in Chinese with English abstract)
Zhang M and Li RZ. 1994. On the catalysis of transition metals in the process of light hydrocarbons generation. Geological Science and Technology Information, 13(3): 75-79(in Chinese with English abstract)
Zhang ZM, Li CS, Long SX and Xu HZ. 2006. Exploration prospect of Upper Palaeozoic natural gas in eastern area of North China. Natural Gas Geoscience, 17(3): 330-334(in Chinese with English abstract)
Zhu GY, Jin Q, Zhang SC, Dai JX, Zhang LY and Li J. 2004. Distribution characteristics of effective source rocks and their control on hydrocarbon accumulation: A case study from the Dongying Sag, eastern China. Acta Geologica Sinica, 78(6): 1275-1288
Zhu GY, Jin Q, Dai JX, Zhang SC, Zhang LY and Zhang YL. 2005. Composite hydrocarbon-generration system: An important concept for source rock evaluation and hydrocarbon prediction in rift lacustrine basin. Chinese Journal of Geology, 40(1): 133-144(in Chinese with English abstract)
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