原油裂解动力学及其相变特征和意义——以柴达木盆地北缘伊深1井为例

发布时间：2018-01-02 00:03

本文关键词：原油裂解动力学及其相变特征和意义——以柴达木盆地北缘伊深1井为例　出处：《天然气地球科学》2016年08期 　论文类型：期刊论文

【摘要】：为了研究柴达木盆地北缘(柴北缘)原油裂解及其相态演化历史,应用黄金管封闭体系高压釜模拟实验,对柴北缘马北106井古近系储层中原油进行了热模拟生气实验。通过对各演化阶段的流体组分精确定量,建立了原油裂解过程中的相态演化模型,同时根据化学动力学原理,计算获取了原油裂解成气的动力学参数。以此为基础,对柴北缘伊北生烃凹陷的原油裂解和相态演化史进行了重建。研究表明,独立相原油地下保存温度上限受到热演化程度和地层温度、压力的双重控制。原油裂解过程中的流体临界压力表现出明显的"稳定"(Easy%RO1.08%)、"升高"(1.08%Easy%RO2.05%)、"降低"(Easy%RO2.05%)3个阶段变化特征。柴北缘伊北生烃凹陷原油裂解从距今约20Ma开始,现已基本完全裂解,其流体相态在N~2_2—Q_(1+2)期间由液相转变为气相,油气运移过程中在埋深浅于1 500m时发生气液分异,伊北凹陷及其周缘勘探方向为深部找气、浅部找油,中心找气、周缘找油。
[Abstract]:In order to study on the northern margin of the Qaidam Basin (Northern Qaidam Basin) crude oil cracking and the phase evolution and application of closed gold tube system autoclave simulation experiment on the northern margin of the Qaidam Basin Ma Bei 106 wells of Paleogene reservoir in Zhongyuan oil was simulated by fluid experiment. Angry group on the evolutionary stage of the precise and quantitative, established phase the evolution model in process of crude oil cracking, and according to the principle of chemical dynamics to obtain the kinetic parameters of oil cracking gas calculation. On this basis, on the northern margin of the Qaidam Basin in North Iraq crude oil cracking and hydrocarbon generation phase evolution history was rebuilt. The study shows that the independent temperature limit by underground crude oil storage thermal evolution degree and the formation temperature, double pressure control. The critical pressure of fluid in process of crude oil cracking show "stable" (Easy%RO1.08%), "elevated" (1.08%Easy%RO2.05%), "reduce" (Easy%RO2.05%) 3 stages The variation characteristics of the North Qaidam northern Iraq hydrocarbon oil cracking from depression since about 20Ma, has been completely cracked. The fluid phase in N~2_2 - Q_ (1+2) during the period from the liquid phase to the gas phase, the process of oil and gas migration in the buried in the depth of 1 500m when the occurrence of gas liquid differentiation, Yibei sag and in the peripheral direction of exploration for gas for deep and shallow oil exploration, gas prospecting for oil center, periphery.

【作者单位】：甘肃省油气资源研究重点实验室/中国科学院地质与地球物理研究所兰州油气资源研究中心中国科学院油气资源研究重点实验室;中国科学院大学;
【基金】：国家自然科学基金面上项目(编号:41072105) 国家重点基础研究发展规划(“973”)项目(编号:2011CB201102) 国家科技重大专项项目(编号:2016ZX5003-002-004)联合资助
【分类号】：P618.13
【正文快照】： 2.中国科学院大学,北京100049)Natural Gas Geoscience,2016,27(8):1500-1508.[付德亮,周世新,李靖,等.原油裂解动力学及其相变特征和意义——以柴达木盆地北缘伊深1井为例[J].天然气地球科学,2016,27(8):1500-1508.]0引言随着原油裂解气概念的提出和逐步完善,有关原油裂解气

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