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腐泥型烃源岩生排烃模拟实验与全过程生烃演化模式 预览 被引量:4

Modeling of the whole hydrocarbon-generating process of sapropelic source rock
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摘要 利用半开放体系生排烃模拟实验、封闭体系的黄金管生烃动力学模拟实验与开放体系的高温热解色谱质谱实验数据与实测数据,在经典生烃模式基础上,对烃源岩全过程生烃演化特征、排烃效率与滞留烃量、高过成熟阶段天然气来源及甲烷同系物裂解温度等问题开展了深入探讨。研究认为,腐泥型烃源岩在主生油阶段(Ro值为0.8%~1.3%)的排烃效率为30%~60%,高成熟阶段(Ro值为1.3%~2.0%)的排烃效率在60%^80%;高成熟阶段干酪根降解气与原油裂解气对总生气量的贡献比大致为1∶4,干酪根降解气量占20%,滞留液态烃裂解气量占13.5%,源外原油裂解气(包含聚集型与分散性原油裂解气)量占66.5%。初步确定了天然气的裂解下限,建立了烃源岩全过程生烃演化模式。 Based on experimental data from hydrocarbon generation with a half-open system,hydrocarbon generation kinetics modeling in gold tube of closed system,high temperature pyrolysis chromatography mass spectrometry experiment with open system and geological data,the characteristics of whole hydrocarbon-generating process,hydrocarbon expulsion efficiency and retained hydrocarbon quantity,origins of natural gas generated in high-over mature stage and cracking temperature of methane homologs were investigated in this study.The sapropelic source rock has a hydrocarbon expulsion efficiency of 30%-60% and 60%-80% in the major oil generation window(with Ro of 0.8%-1.3%) and high maturity stage(with Ro of 1.3%-2.0%) respectively; and the contribution ratio of kerogen degradation gas to oil cracking gas in total generated gas in high maturity stage is about 1:4.The degradation gas of kerogen accounts for 20%,the retained liquid hydrocarbon cracking gas accounts for 13.5%,and the amount of out-reservoir oil cracking gas(including aggregation type and dispersed oil cracking gas) accounts for 66.5%.The lower limit of gas cracking is determined preliminarily.Based on the new understandings,a model of the whole hydrocarbon-generating process of source rock is built.
作者 李剑 马卫 王义凤 王东良 谢增业 李志生 马成华 LI Jian1, 2, MA Wei1, 2, WANG Yifeng1, 2, WANG Dongliang1, 2, XIE Zengye1, 2, LI Zhisheng1, 2, MA Chenghua1, 2 (1. Langfang Branch of PetroChina Research Institute of Petroleum Exploration & Development, Langfang 065007, China; 2. Key Laboratory of Gas Reservoir Formation and Development, CNPC, Langfang 065007, China)
出处 《石油勘探与开发》 CSCD 北大核心 2018年第3期445-454,共10页 Petroleum Exploration and Development
基金 国家科技重大专项(2016ZX05007-003,2011ZX05007-002) 中国石油天然气股份有限公司重大专项(2016B-0601,2014B-0608)
关键词 腐泥型烃源岩 生烃演化模式 排烃效率 生排烃模拟实验 干酪根 降解气 裂解气 sapropelic source rock hydrocarbon-generating model hydrocarbon expulsion efficiency experiment of hydrocarbon generation kerogen degradation gas cracking gas
作者简介 李剑(1966-),男,河北怀安人,博士,中国石油勘探开发研究院教授级高级工程师,主要从事天然气地球化学、成藏及资源评价等方面研究.地址:河北省廊坊市万庄44号信箱,中国石油勘探开发研究院天然气地质研究所,邮政编码:065007.E-mail:lijian69@petrochina.com.cn;联系作者:马卫(1984-),男,山东肥城人,硕士,中国石油勘探开发研究院工程师,主要从事天然气地球化学、成藏及资源评价等方面研究.地址:河北省廊坊市万庄44号信箱,中国石油勘探开发研究院天然气地质研究所,邮政编码:065007.E-mail:mawei69@petrochina.com.cn
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