降温热模拟实验中烃源岩成熟度和产气率的变化特征

doi:10.11743/ogg20060217

摘要/Abstract

摘要：

对鄂尔多斯盆地低成熟(R₀=0.29%)、成熟(R₀=0.66%)和高成熟(R₀=1.71%)的3个煤样分别开展了降温、延长加热时间热模拟实验,研究烃源岩在降温时延长加热时间成熟度和产气率的变化特征。煤样在升温后降到一定的温度,延长加热时间烃源岩成熟度仍然发生变化,增加幅度为0.15%-0.40%。在同一温度不同时间段内,R₀值增加的速率存在差异,前期R。值增加速率较大.随着加热时间的延长R₀值增加的速率逐渐降低。降温延长加热时间测定的烃源岩产气率的变化特征是,早期产气率较低,随着加热时间的延长累积产气率逐渐增高。生气速率的变化特征如同R₀值,在前期生气速率较大,随加热时间延长生气率逐渐降低。实验结果表明,烃源岩在经历高温后降到一定的温度,延长加热时间可以继续生烃,只是生气速率逐渐减小。

关键词: 降温, 成熟度, 产气率, 烃源岩, 热模拟, 鄂尔多斯盆地

Abstract:

Thermal simulation experiments with lowering temperature and extending heating time have been performed on 3 coal samples with low maturity (R₀=0.29%), normal maturity (R₀=0.66%) and high maturity (R₀=1.71%), respectively, to study the change of maturity and gas generating yield of source rocks led by extending heating time while lowering the temperature. The vitrinite reflectance (R₀) of source rocks still can increase if the heating time is extended with lowering temperature to a certain point after heating. The increment is in the range of 0.15%-0.40%. The rates of increase of R₀ value vary at different time interval at the same temperature. It is relatively large at the initial stage, but then gradually lowers with extending heating time. Gas generating yield of source rocks measured through extending heating time with lowering temperature is relatively low at the initial stage, but the cumulative gas generating yield increases gradually along with the extension of heating time. Just like R₀value, the rate of gas generation is larger at the initial stage but then lowers with extending heating time. The experiment results show that hydrocarbon generation can go on after the temperature has been lowered to a certain point after heating if the heating time is extended, but the rate of gas generation would decrease gradually.

Key words: lower temperature, maturity, gas generating yield, source rocks, thermal simulation

中图分类号:

TE125.2

胡国艺,李振铎,李志生,等. 降温热模拟实验中烃源岩成熟度和产气率的变化特征[J]. 石油与天然气地质, 2006, 27(2): 253-257. doi: 10.11743/ogg20060217 Hu Guoyi,Li Zhenduo,Li Zhisheng,et al. Characteristics of maturity and gas generating yield of source rocks in thermal simulation experiment with lowering temperature[J]. Oil & Gas Geology, 2006, 27(2): 253-257. doi: 10.11743/ogg20060217

参考文献

[1] 杨俊杰,裴锡古.中国天然气地质学(卷四)[M].北京:石油工业出版社,1996.215～234Yang Junjie,Pei Xigu.Natural gas geology[M].Beijing:Petroleum Industry Press,1996.215-234
[2] 刘新社,席胜利,付金华,等.鄂尔多斯盆地上古生界天然气生成[J].天然气工业,2000,20(6):19～23Liu Xinshe,Xi Shengli,Fu Jinhua,et al,Natural gas generation in the Upper Paleozoic in Ordos basin[J].Natural Gas Industry,2000,20(6):19-23
[3] 任战利,赵重远,张军,等.鄂尔多斯盆地古地温研究[J].沉积学报,1994,12(1):56～65Ren Zhanli,Zhao Zhongyuan,Zhang Jun,et al.Research on Paleotemperature in the Ordos basin[J],Acta Sedimentologica Sinica,1994,12 (1):56-65
[4] Lopatin N V.Temperature and geologic time factors in coalification[J].SSSR Ser Geol,1971,3:95-106
[5] Waples D W.Time and temperature in petroleum exploration application of Lopatin's method to petroleum exploration[J].AAPG Bull,1980,64:916-926
[6] 姚素平,张景荣.鄂尔多斯盆地中生界煤成烃潜力的实验研究[J].煤田地质与勘探,2004,32(1):24～28Yao Suping,Zhang Jingrong.Experimental study of hydrocarbon generation potentiality of Mesozoic coal measure,Ordos basin[J].Coal Geology & Exploration,2004,32(1):24-28
[7] 刘大永,彭平安.煤系地层中不同类型镜质体可能的化学结构与生物母质[J].石油与天然气地质,2004,25(4):377～384Liu Dayong,Peng Ping'an.Possible chenical constitutions and original biological materials of various vitrinites in coal measure strata[J].Oil & Gas Geology,2004,25(4):377-384
[8] 许化政,周新科.文留地区石炭-二叠纪煤系生烃史及生烃潜力[J].石油与天然气地质,2004,25(4):400～407,421Xu Huazheng,Zhou Xinke.Hydrocarbon-generating potential and history of Carboniferous-Permian coal measure strata in Wenliu areas[J].Oil & Gas Geology,2004,25(4):400-407,421
[9] 曹建军,孔凡顺,彭木高.煤成气生气量热模拟实验条件对比综述[J].油气地质与采收率,2004,11(5):14～16Cao Jianjun,Kong Fanshun,Peng Mugao.Summary of thermal simulating experimental conditions correlation of coal-related gas generating amount[J].Petroleum Geology & Recovery Efficiency,2004,11(5):14-16
[10] 刘大锰,杨起,汤达祯,等.鄂尔多斯盆地煤成烃潜力与成气热模拟实验[J].现代地质,1997,11(3):322～329Liu Dameng,Yang Qi,Tang Dazhen,et al.Coal-derived hydrocarbon potential and thermal simulating experiment on coal-derived gas from Ordos basin[J].Geoscience,1997,11 (3):322-329
[11] 魏永佩,王毅.鄂尔多斯盆地多种能源矿产富集规律的比较[J].石油与天然气地质,2004,25(4):385～392Wei Yongpei,Wang Yi.Comparison of enrichment patterns of various energy resources in Ordos basin[J].Oil & Gas Geology,2004,25(4):385-392
[12] 宫色,李剑,张英,等.煤的二次生烃机理探讨[J].石油实验地质,2002,24(6):541～549Gong Se,Li Jian,Zhang Ying,et al.Discussion on the secondary hydrocarbon-generation mechanism of coal[J].Petroleum Geology & Experiment,2002,24(6):541-549

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