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Estimation and calibration of heat flow history in sedimentary basin modeling for hydrocarbon resources

油气资源沉积盆地建模中热流历史的估计和校准

基本信息

批准号：
03640642
负责人：
SUZUKI Noriyuki
金额：
$ 1.15万
依托单位：
Shimane University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1991
资助国家：
日本
起止时间：
1991 至 1992
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-03640642/
关键词：
heat flow heat flow history thermal history kinetics reaction kinetics computer modeling petroleum resources sedimentary basin 堆積盆地モデリングステランメチルフェナントレン

项目摘要

Several computer aided basin modeling systems for hydrocarbon resources have been developed recently. Among various simulation conditions for modeling hydrocarbon generation, expulsion, and accumulation, the thermal history of the source rocks is one of the most important simulation conditions. The heat flow history obtained by geophysical approach is not so precise, but can give useful information regarding the pattern of heat flow change. On the other hand, that obtained by geochemical approach is comparatively precise, but does not give sufficient information on the history of heat flow. The purpose of our research is to establish the new and interactive approach based on various methodologies to assess the heat flow history in the sedimentary basins.Vitrinite reflectance, sterane isomer ratio, and methylphenanthrene indices are examined to reveal their usefulness as thermal indicators. Their kinetic behaviors during diagenetic process were clarified based on their analytical results and possible thermal histories estimated by geological consideration on bore hole samples from MITI Niigata-heiya and MITI Takada-heiya. Their kinetic parameters such as apparent activation energies and pre-exponential factors are, consequently, determined. The kinetics of these organic thermal indicators are applied to reconstruct the heat flow history in the Dolna Kamchia depression, northeastern Bulgaria. The heat flow history is calibrated through the interactive process of geophysical, geological and geochemical approaches with a computer modeling system(MAT98). The present study established the basis of computer aided interactive modeling for the reconstruction of heat flow history.

近年来，已开发了几个油气资源计算机辅助盆地模拟系统。在模拟生烃、排烃和聚集的各种模拟条件中，源岩的热历史是最重要的模拟条件之一。通过地球物理方法获得的热流历史不是很精确，但可以提供关于热流变化模式的有用信息。另一方面，用地球化学法获得的热流值相对较精确，但不能提供足够的热流史信息。我们的研究目的是建立一种基于各种方法的新的交互方法来评估沉积盆地的热流史。通过测试镜质组反射率、甾烷异构体比和甲基菲指数来揭示它们作为热指示剂的有效性。根据它们的分析结果和对MITI Niigata-heiya和MITI Takada-heiya的钻孔样品进行地质考虑估计的可能的热历史，阐明了它们在成岩过程中的动力学行为。由此确定了它们的表观活化能和指前因子等动力学参数。这些有机热指示剂的动力学被应用于重建保加利亚东北部Dolna Kamchia凹陷的热流史。热流历史通过地球物理、地质和地球化学方法与计算机模拟系统(MAT98)的交互过程进行标定。本研究为热流历史重建的计算机辅助交互建模奠定了基础。