| CFD油田火山岩展布特征及其对油藏的控制作用 |
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| 引用本文： | 赵鹏飞,刘朋,明君,田晓平,刘文超,吕世聪.CFD油田火山岩展布特征及其对油藏的控制作用[J].地球科学,2021,46(7):2466-2480. |
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| 作者姓名： | 赵鹏飞 刘朋 明君 田晓平 刘文超 吕世聪 |
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| 作者单位： | 中海油研究总院有限责任公司,北京 100028;中海石油(中国)有限公司天津分公司,天津 300459 |
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| 基金项目： | “十三五”国家油气专项子课题2016ZX05024-003-007 |
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| 摘 要： | 火山岩复合油气藏特征独特，为揭示该类油气藏的特征和拓展勘探思路，论述了火山岩的特征及其对油藏的控制作用.综合薄片、钻井、测井和地震资料研究火山岩的岩相特征和发育模式，采用岩电分析和测井响应特征研究手段定量识别玄武岩和凝灰岩.在此基础上，依据地球物理手段确定火山岩和砂泥岩的波阻抗界限值，并基于测井约束下的波阻抗反演和东营组局部井区杂乱反射的地震特征，实现复杂岩性背景下火山岩的刻画和分布预测.论证结果:馆陶组为火山大规模活动期，发育大套火山岩，火山岩主要分布于油田南部和西南部.东营组和沙河街组火山小规模活动，发育少量火山岩，零星分布于油田的局部井区；主断裂区火山岩较厚，远离断裂区火山岩相对较薄，主断裂控制火山岩的发育程度和分布；火山岩岩性致密，可作为油藏的盖层和侧向遮挡层，并占据外来碎屑岩的沉积空间；火山岩是研究区油气成藏的必要条件，但其分割圈闭，控制和限制碎屑岩储层的分布，也限定了油藏的类型和规模，并对原油物性具有一定的影响.研究成果揭示了渤海湾盆地中新生界新的勘探领域，也可为该类油田的油藏评价和开发部署提供范例.
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| 关 键 词： | 火山岩 火山发育模式 岩相特征 盖层 侧向封堵 空间分布 石油地质 |
| 收稿时间： | 2020-08-14 |
Distribution Characteristics of Volcanic Rock in CFD Oilfield and Its Controlling Effect on Reservoir |
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| Zhao Pengfei,Liu Peng,Ming Jun,Tian Xiaoping,Liu Wenchao,Lü Shicong.Distribution Characteristics of Volcanic Rock in CFD Oilfield and Its Controlling Effect on Reservoir[J].Earth Science-Journal of China University of Geosciences,2021,46(7):2466-2480. |
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| Authors: | Zhao Pengfei Liu Peng Ming Jun Tian Xiaoping Liu Wenchao Lü Shicong |
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| Abstract: | The characteristics of volcanic complex reservoirs are unique. In order to reveal the characteristics of these reservoirs and expand the exploration ideas, this paper discusses the characteristics of volcanic rocks and their control on the reservoirs. The lithofacies characteristics and development patterns of volcanic rocks were studied by combining thin section, drilling, logging and seismic data. In addition, basalt and tuff were identified quantitatively by means of rock electrical analysis and logging response characteristics. Based on this, the boundary limits of wave impedance of volcanic rock and sand-mudstone are determined by geophysical method, and the seismic characteristics of wave impedance inversion under logging constraints and disorderly reflection in local well area of Dong Ying Formation are used to describe and predict volcanic rock distribution under complex lithological background. Guan Tao Formation is a large-scale volcanic activity period which contributes to development of a large set of volcanic rock, mainly distributing in the south and southwest of the oil field. The slightly activity of the Volcanoes of Dong Ying and Sha He Jie Groups results in a small amount of volcanic rock developed, which is scattered in the local well area of oil field. The closer to main faulted area, the thicker volcanic rocks are, so it can be inferred that development and distribution of volcanic rocks controlled by main faults. Volcanic rock is tight, which can serve as reservoir cap rock and lateral sealing layer, occupying the sedimentary space of exotic clastic rocks. Volcanic rock is a necessary condition for oil and gas accumulation in the study area, but it will segment trap, control and restrict the distribution of clastic rock, limit the type and scale of reservoir, as well as have certain effect on the crude oil property. The research results reveal a new exploration area of Cenozoic in Bohai Bay Basin, which can also provide an example for reservoir evaluation and development deployment. |
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