张凤奇,鲁雪松,钟红利,张佩,魏驰,刘伟.沉积条件和埋藏过程对深层地层超压的影响[J].西北地质,2019,52(1):89-97
沉积条件和埋藏过程对深层地层超压的影响
Effect of Sedimentary Conditions and Burial Process on Layers Overpressure in Deep Zones
投稿时间:2018-03-15  修订日期:2018-07-12
DOI:10.19751/j.cnki.61-1149/p.2019.01.008
中文关键词:  沉积条件;沉积速率;埋藏方式;深层;超压
英文关键词:sedimentary condition;sedimentary velocity;burial way;deep zones;overpressure
基金项目:国家自然科学基金项目“鄂尔多斯盆地上古生界致密砂岩气成岩、成藏耦合机理研究”(41372148)、“致密砂岩储层微观孔喉非均质性及对石油分布的控制作用”(41502137)、陕西省自然科学基础研究计划项目“致密砂岩储层多尺度微观孔喉分布表征及其含油有效性”(2017JM4004)、陕西省教育厅重点实验室科研计划项目“强非均质性致密砂岩储层石油形成的流体动力学机制研究——以鄂尔多斯盆地延长组长7油层组为例”(17JS110)、中国石油天然气股份有限公司科学研究与技术开发项目“前陆盆地源储压差计算与源储配置定量评价软件开发”(2016B-0502)联合资助
作者单位E-mail
张凤奇 西安石油大学地球科学与工程学院, 陕西 西安 710065;西安石油大学陕西省油气成藏地质学重点实验室, 陕西 西安 710065  
鲁雪松 中国石油勘探开发研究院, 北京 100083 luxs@petrochina.com.cn 
钟红利 西安科技大学地质与环境学院, 陕西 西安 710054  
张佩 西安石油大学地球科学与工程学院, 陕西 西安 710065  
魏驰 西安石油大学地球科学与工程学院, 陕西 西安 710065  
刘伟 西安石油大学地球科学与工程学院, 陕西 西安 710065  
摘要点击次数: 215
全文下载次数: 249
中文摘要:
      针对沉积条件和埋藏过程对深层地层超压影响缺乏定量化的认识问题,通过构建反映不同沉积条件和不同埋藏过程的地质模型,运用盆地模拟软件数值模拟了不同岩性组合、不同上覆盖层厚度、不同埋藏方式和不同沉积速率条件下深层不同岩性地层超压的分布,并定量分析总结了沉积条件和埋藏过程对深层地层超压的影响。结果表明,随着沉积速率和上覆盖层厚度的各自增大,深层地层中形成的超压强度都会随之增大,并且这种增大作用在深层泥岩中比在深层砂岩中稍大;随着地层中泥岩含量的增大,深层地层中形成的超压强度也会随之增大,相比沉积速率和上覆盖层厚度,地层中泥岩含量的增大引起的深层地层中超压强度的增大作用更为明显;地层埋藏方式的改变可不同程度地引起深层地层中超压强度的改变,这种超压强度的大小改变规律在深层砂岩和泥岩之间、深层不同埋深泥岩之间不一定具有一致性,这与不同埋藏方式下地层中超压的形成同时受到多种演变规律不同因素的叠加效应有关。该研究可为深化认识深层地层超压的形成机制提供重要依据。
英文摘要:
      In order to deal with the problem of lacking quantitative analysis about the effect of sedimentary conditions and burial process on layers overpressure in deep zones, the geology models of different sedimentary conditions and different burial progress has been established in this paper. And then, the numerical simulation about the overpressure distribution of different lithology layers on the conditions of different lithological associations, different thicknesses of overlying cap rock, different burial ways and different sedimentary velocities have been used to quantitatively analyze and summary the effect of sedimentary conditions and burial process on layers overpressure in deep zones. The results show that the overpressure magnitude in the layers become bigger with the increase of sedimentary velocity and overlying cap rock depth, and this increase effect in the mudstones are higher than that in the sandstones. The overpressure magnitude in the layers also become bigger as the mudstone content in the layer becomes bigger, and the increase effect of overpressure in the layers due to the increase of mudstone content in the layer are more obvious than that caused by the increase of sedimentary velocity and overlying cap rock depth. The changes of burial way can cause the change of overpressure in the deep layers, and this changing rule is not necessarily consistent between sandstone and mudstone or between the mudstones of different depths, which relates with the superimposed effect of multi-factors, having different effect rules on the overpressure in the layer under the conditions of different burial ways. This study may supply the important evidence for deepening the understanding of genetic mechanism of overpressure in the deep zones.
查看全文  查看/发表评论  下载PDF阅读器
关闭