有机质演化与沉积矿床成因(Ⅱ)——煤成烃类与层控矿床
EVOLUTION OF ORGANIC MATTER AND ORIGIN OF SEDIMENTARY DEPOSITS(II)——HYDROCARBONS ORIGINATING FROM COAL AND STRATA-BOUND DEPOSITS
-
摘要: 成煤物质被埋藏以后,在其煤化作用过程中可生成大量气体烃(即煤成气)与少量液体烃(即煤成油)。按照B. JI.科兹洛夫计算值一吨煤产生的甲烷量，褐煤阶段为68M3，到焦煤达270M3，到无烟煤可超过400M3Abstract: According to the domestic and foreign data and experimental results obtained from analysis,brief discussion have been gir-en on the amount and characteristics of gas and liquid hydrocarbons produced by organic m atter of coal-bearing strata during the different stages of coal formation,as well as the effect of macerals upon nature and composition of the products.In differentiation from hydrocarbons produced by source rocks, the liquid hydrocarbons originating from coal are composed of special oils,such as high war oil and lour mature light oil, especially the Latter does not erist in hydrocarbon originating from oil.The oil formation threshuld depth of high war oil is usually deeper than,but the threshold depth of low mature oil is shallower than that of typical sapropelic source rocks. All these characters are controlled by the nature and composition of macerals.Large amount of light oil rich in terpanes is produced from Fushun resins of low maturity in heating eyperiments. A scheme diagram of evolutionary stages of coal gas has been proposed.The relationships between pairs as reformation process and evolution of petroleum,metallic source strata and source rocks, host rock strata and reservoir rocks,migration of metallic elements and that of petroleum have been discussed in terms of grimary study of organic matter and lots of asphalts associated with some strata-bound ore deposits, as well as two eacamples of strata-bound ores.Solid asphalts can be divided into syngenetic-diagenetic asphalts,epigenetic (reformational) asphalts and hypergenetic asphalts.Epigenetic asphalts are also called reservoir (thermal metamorphosed) asphalts,representing one of the two thermal metamorphosed end products of oils within reservoirs.The significance of the study on origin of paleo-oil traps (thermal cracking methane gas field)and certain strata-bound ores has been discussed briefly. It has been proposed to predict the intensity and history of reformation process of strata-bound ores by the study of nature,composition and evolutionary- stage of organic matter and different kinds of asphalt in the ore deposits.
-
[1] 1.戴金星，1980，我国煤系地层含气性初步研究。《石油学报》，第1卷第4期。
2.傅家漠、汪本善、史继杨、贾蓉芬、盛国英，1983，有机质演化与沉积矿床成因(I)—油气成因与评价。《沉积学报》第一卷，第3期。
3.杨万里、李永康、高瑞棋、郭庆福,1981，松辽盆地陆相生油母质的类型与演化模式。《中国科学》 ,第8期，1000-1008页
4.范德廉、杨秀珍、王连芳、陈南生、肖学军，1981，南方几省下寒武统黑色岩系及层状多元素富集层。《沉积岩石学研究》，科学出版社。
5.刘德汉、周中毅、贾蓉芬、李文英，1982,碳酸岩生油岩中沥青变质程度和沥青热变质实验。《地球化学》第3期237-243页。
6.刘德汉、林茂德，1983,碳沥青中几种钒、镍矿物的发现和成因讨论。《中国科学》，即将出版。
7.Saxby, J. D. , 1976，有机物质在矿床成因中的重要意义。《层控矿床和层状矿床》，第2卷，89-108页，地质出版社， 19800
8.汞矿地质与普查勘探编写组，1975,汞矿地质与普查勘探。地质出版社，169页。
9.Tissot, B .P.and D.H.Welte，1978, Petroleum Formation and Occurrence,Springer-Verlag, Berlin.
10.Hedberg，H·D.，1968，Significance of High-Wax Oils with Respect to Genesis of Petroleum, Bull. of AAPG, v.52, N.5, P. 536-750.
11.Connan, J .and A .M. Cassou, 1980, Properties of Gases and Petroleu m Liquids Derived from Terrestrial Kerogen at Various Maturation Levels, Geochim.Cosmochim.Acta. v. 44, N.I, P. 1-23.
12.Philp，R. P. and J.D. Saaby，1969, Organic Geochemistry of Coal Macerals from the Sydney Basin(Australia)，Phys.and Chem.of the E arth，v.12，p.639-651。
13.,J.D. and E. B. Tourtelot, 1969, Geological Investigation of Some Black Shales and Associated Rocks，Bull.of U.S. Geol. Surv.，1314-A. -
点击查看大图
计量
- 文章访问数: 408
- HTML全文浏览量: 12
- PDF下载量: 433
- 被引次数: 0
下载:
