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鄂尔多斯盆地西南地区深部地层放射性异常及其对烃源岩演化的影响
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摘要
本研究将铀矿和油气勘探理论相结合,通过对鄂尔多斯盆地西南地区钻井资料的归纳、统计以及岩芯的测试,应用测井解释、岩性、岩相分析、铀源以及数学分析等手段,对研究区深部放射性异常的分布、特征、成因及其对生烃的影响等方面进行了探讨。
     研究得出,长7段存在三层放射性异常:长7~1、长7~3的顶部和底部,各层异常分布上具一定的规律以及相互联系,且以铀元素显著富集为特征。关于放射性异常的成因,研究认为,一方面,延长组尘凝灰岩可能为铀的富集提供重要铀源;另外一方面,除了同沉积成因之外,不排除铀为同生沉积后生富集的可能,铀可能在后期发生了迁移,铀的迁移与后期构造变动引起的沉积、古地下水的注入以及古水文地质旋回有关;此外,古气候变化、晚三叠世西南缘较强烈的构造变动、延长组上部残留地层的厚层砂体、浊积扇相的浊积岩等因素,为放射性异常铀元素的富集提供了有利的沉积环境。通过计算和归纳认为,深部放射性异常对烃源岩具放射性生热加温作用和放射性催化作用,一定程度上,可以促进长7段烃源岩的生烃演化。
     探讨深部放射性异常及其对烃源岩演化的影响,有助于对浅部铀矿的铀源、深部古铀矿、油-铀相伴生机理等科学问题的理解,也为多种能源矿产共存富集的深入研究提供一条新的思路,具有比较重要的科学研究意义。
Combining the prospecting theory of oil and gas with that of uranium, through the induction and statistics of well data and the test of rock cores in southwestern Ordos basin, the distribution, the characteristics, the genesis, and the impacts on hydrocarbon-generation of the deep radioactive anomaly are mainly studied in this paper, by means of well logging interpretation, lithology, petrographical, uranium traceback and mathematical analysis and so on.
     The study shows, with the feature of enrichment of uranium, three parts of significant deep radioactive anomaly exists in chang 7: chang 7~1, the top and the bottom parts of chang 7~3 member. They are regulated in distribution and probably also relates with each. Several factors for the genesis of the radioactive anomaly are analysed in the research. Firstly, the volcanoc ash tuff in Yanchang formation is probably an extremely important uranium source for the enrichment of uranium in studied area. Further more, besides the syndepositional origin model, the uranium enriched in this area, might also form in the synsedimentary stage and mineralize in the epigenetic phase. The uranium has once migrated later, the orientation of which was perhaps related with the hydrogeologic cycle, the deposition and the injected paleofluid caused by tectonic disturbance. More important, there are some indispensable advantages for the enrichment of uranium, such as, the intensive tectonic disturbance of the southwest part in Late Triassic, the massive sand body of the relic upper Yanchang formation, the turbidite of hackberry facies, and the paleoclimate and so on. Finally, the impacts that the deep radioactive anomaly on generating rock, are mainly thermocatalysis and radioactive catalysis, which have improved the evolution of the hydrocarbon generation of the oil source rock of chang 7 member.
     Probing into the deep radioactive anomaly and its effects on the embracing rocks, is conductive to the comprehension on some scientific issues, such as a source of shallow uranium deposits, the deep paleo-uranium deposits, and the mechanism of the oil-uranium association. Besides, it provides a new idea for the research of accumulation and distribution patterns for multi-energy mineral deposits, which is rather important in scientific study.
引文
1. Nissenbaum A, Swaine D J, Organic matter-metal interactions in Recent sediments--the role of humic substances[J], [Serial] Geochimica et Cosmochimica Acta, 1976, 40 (7): 809-816.
    2. Koglin E, Schenk H J, Schwochau K, Spectroscopic studies on the binding of uranium by brown coal[J], [Serial] Applied Spectroscopy, 1978, 32 (5):486-488.
    3.李怀渊,张守鹏,李海明,铀—油相伴性探讨[J],地质论评,2000,46(4):355-361.
    4.孙晔,李子颖,肖新建等,油气圈闭与鄂尔多斯盆地北部铀成矿关系探讨[J],铀矿地质,2004,20(6):337-343.
    5.尹金双,向伟东,欧光习等,微生物、有机质、油气与砂岩型铀矿[J],2005,21(5):287-294.
    6.向伟东,方锡珩,李田港等,鄂尔多斯盆地东胜铀矿床成矿特征与成矿模式[J],铀矿地质,2006,22(5):257-266.
    7.王平,熊盛青,油气放射性勘查原理方法与应用[M],北京:地质出版社,1997.
    8.陈祖伊等,全国新一轮可地浸砂岩铀矿勘查战略选区[J],核工业北京地质研究院年报,2002,20~34.
    9.刘池洋,赵红格,谭成仟等,多种能源矿产赋存与盆地成藏(矿)系统[J],石油与天然气地质,2006,27(2):131-142.
    10.张蓉蓉,鄂尔多斯盆地中深部放射性异常的研究及意义[D],西北大学硕士论文,2005.
    11.赵军龙,谭成仟,刘池阳等,鄂尔多斯盆地高自然伽玛异常特征[J],地球科学与环境学报,2006,28(3):83-86.
    12. [M],1948,1-460.
    13.张福厚,张万选,石油地质学[M],北京:石油工业出版社(第二版),1990.
    14.李琼,韩鹏,中深部放射性异常及其与油气演化的关系[A],全国古地理及沉积学会议摘要,2006.
    15. Li-Hung Lin, Pei-ling Wang et al, Long-Term Sustainability of a Hing-Energy, Low-Diversity Crustal Biome[J], SCIENCE, 2006, VOL314: 479-482.
    16.刘池洋,赵红格,赵俊峰等,鄂尔多斯盆地演化-改造的时空坐标及其成藏(矿)响应[J],地质学报,2006,80(5):618-638.
    17.杨俊杰,鄂尔多斯盆地构造演化及油气分布规律[M],北京:石油工业出版社,2002.
    18.杨飏,鄂尔多斯盆地延长组沉积作用与构造变动的关系[D],硕士论文,2006.
    19.尉中良,邹长春,高等学校教材《地球物理测井》[M],地质出版社,2005.
    20.刘东元,吕恭序,陈文琇,辐射化学实验方法[M],原子能出版社,1992.
    21.国家973项目“多种能源矿产共存成藏(矿)机理与富集分布规律”阶段成果,2005.
    22.贾玉新,概率论与数理统计[M],北京:北京邮电大学出版社.2001.
    23.柴芳蓉等,国防科技名词大典-核能[M],航空工业出版社,2002.
    24.孙圭,赵致和,中国北西部铀矿地质(下卷) (内部资料),核工业西北地质局,1998.
    25.余达淦等,铀资源地质学,哈尔滨工程大学出版社[M],2005.
    26.郭彦如,鄂尔多斯盆地延长组凝灰岩沉积特征与构造活动关系研究,2006,内部报告.
    27.郭艳琴,李文厚,胡友洲等,陇东地区上三叠统延长组早中期物源分析与沉积体系[J],煤田地质与勘探,2006,34(1):1-4.
    28.赵文智,王新民,郭彦如等,鄂尔多斯盆地西部晚三叠世原型盆地恢复及其改造演化[J],石油勘探与开发,2006,(01):6-13.
    29.杨华,张文正,论鄂尔多斯盆地长7段优质油源岩在低滲透油气成藏富集中的主导作用:地质地球化学特征[J],地球化学,2005,34(2):147-154.
    30.孙圭,赵致和,中国北西部铀矿地质(上卷) (内部资料),核工业西北地质局,1998.
    31.李胜祥,陈肇博,陈祖伊等,层序地层学在陆相沉积盆地内砂岩型铀矿找矿中的应用前景[J],铀矿地质,2000,17(4):204-208.
    32.付金华,郭正权,邓秀芹等,鄂尔多斯盆地西南地区上三叠统延长组沉积相及石油地质意义[J],古地理学报,2005,7(1):34-44.
    33.刘承祚等,数学地质专辑(一)[M],地质出版社,1980.
    34.魏斌,魏红红,陈全红等,鄂尔多斯盆地上三叠统延长组物源分析[J],西北大学学报,2003,33(4):447-450.
    35.邓秀芹,岳乐平,惠潇等,磁组构分析方法在钻井岩心古水流方向研究方面的应用-以鄂尔多斯地块天环坳陷南段延长组为例[A],第八届古地理学与沉积学学术会议论文摘要集,2004.
    36. Condeie, K C Proterozoic crustal evolution[M]. Amsterdam:Elsevier science, 1993,411--459.
    37. Douglas G.B, position of uranium and/or coffinite accumulations to the hematitie--pyrite interface in sandstone--type deposits, Scientific communications, 1976, 944--948.
    38. Fisher Q.J, Wignall P.B. 2001, Palaeoenvironmental controls on the uranium distribution in an Upper Carboniferous black shale (Gastrioceras listeri Marine Band) and associated strata; England. Chemical Geology 175, 605-621.
    39.代大经,唐正松,陈鑫唐等,铀的地球化学特征及其测井响应在油气勘探中的应用[J],天然气工业,1995,15(5):21-24.
    40. Meunier, Uranium and organic matter in a Paleodeltaic environment: The Coutras deposit[J], Econ, GEOL, 1989, (84): 1546-1549.
    41. Wood S A, The role of humic substances in the transport and fixation of metals of economic interest(Au,Pt,U,V)[J], Ore Geology Review, 1996, (11): 2-6.
    42. Granger H.C. and Warren C.G, Unstable sulfur compounds and the origin of rool--type deposits. Economic Geology, 1969, 64:160-171.
    43. Hosteler P.B. and Garrels R.M., Transportation and precipitation of uranium and vanadium at low temperature, with special reference to sandstone--type uranium deposits, Economic Geology, 57(2):137-167.
    44. Littke R, Cramer B, Gerling P, et al.1999, Gas generation and accumulation in the West Siberian basin.AAPG Bulleti, 83 (10):1042-1665.
    45.李琼等,砂岩型铀矿分类[J],西北大学学报,2006.
    46.梅志超,沉积相与古地理重建[M],西北大学出版社,1994.
    47.刘池洋,盆地构造动力学研究的弱点、难点及重点[J],地学前缘,2005,12(3):113-124.
    48.张小会,鄂尔多斯盆地印支、燕山期构造层地质构造研究与工业制图,内部报告,1992.
    49. Schmoker James W, Determination of organic-matter content of Appalachian Devonian shales from gamma-ray logs[J], [Serial] AAPG Bulletin. 1981, 65 (7): 1285-1298.
    50.徐永昌,吴仁铭,沈平等,沉积岩中铀、钍、钾与区域地温状态的关系[A],见石油地球科学学会论文集[C],1982,科学出版社.
    51.刘洛夫,张守春,高岗等,油气生排机理与模式[M],石油工业出版社,2003.
    52.邱楠生,胡圣标,何丽娟,沉积盆地热体制研究的理论与应用[M],石油工业出版社,2004.
    53.侯德封,欧阳自远,天津生,核转变能与地球物质的演化[M],科学出版社,1974.
    54. Rybach L, Determination of heat production rate, Rybach L.Determination of heat productiong rate[A], In: Haenel R, Rybach L, Stegena Led, Handbook of Terrestrial Heat-Flow Density Determination[C], Dordrecht, Kluwer Academic Publishers, 1988, 125-142.
    55. Rybach Land Bonterbaeth G, Earth Planet, Sci.left, 1982, Vol, 57: 367--376.
    56. Wollenberg H A, Smith A R, Radiogenic heat production of crustal rocks--an assessment based on geochemical data[J], (Serial, Conference Document) Geophysical Research Letters, 1987, 14 (3): 295-298.
    57.史謌,地球物理学基础[M],北京大学出版社,2002.
    58.苗建宇,国家973项目“多种能源矿产共存成藏(矿)机理与富集分布规律”阶段成果,2005.
    59.国家973项目“多种能源矿产共存成藏(矿)机理与富集分布规律”阶段成果,2006.
    60.王凯雄,水化学,化学工业出版社[M],2001.
    61.赵伦山,张本仁主编.地球化学.北京:地质出版社,1987,194~201.
    62.张景廉,卫平生,张虎权,陈启林,再论石油与砂岩型铀矿床的相互关系—四论油气与金属(非金属)矿床的相互关系[J],新疆石油地质,2006,(04):493-497.
    63.张景廉,张虎权,张宁,朱炳泉,非生物(无机)成因油气基础科学问题,天然气地球科学,2006,(01):20-24.
    64.林吕铋,大洋深处的生命奇观[N],中国科学报,1995.
    65.鄂尔多斯盆地烃源岩类型分布及生烃潜力评价,内部报告,2006.
    66.刘文汇,王万春,烃类的有机(生物)与无机(非生物)来源-油气成因理论思考之二[J],矿物岩石地球化学通报,2000,19(3):179-186.

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