| 多层构造油藏纵向细分计算单元对储量参数及结果的影响 |
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| 引用本文： | 颜冠山,刘宗宾,宋洪亮,韩雪芳,王欣然.多层构造油藏纵向细分计算单元对储量参数及结果的影响[J].地质与资源,2020,29(4):342-350. |
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| 作者姓名： | 颜冠山 刘宗宾 宋洪亮 韩雪芳 王欣然 |
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| 作者单位： | 中海石油(中国)有限公司天津分公司 渤海石油研究院, 天津 300459 |
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| 基金项目： | “十三五”国家科技重大专项“渤海油田高效开发示范工程”（编号2016ZX05058001）. |
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| 摘 要： | 为满足油田中后期精细开发及后续调整挖潜的需要，亟需进行更精细的储量研究，其中最重要的一环就是纵向细分计算单元.对于多层构造油藏，纵向细分主要根据油层组内隔夹层分布特征、小层物性特征，细分到以小层或者分布特征和物性相近且纵向上连续分布的小层组合为计算单元.根据纵向细分计算单元前后储量参数选值的理论推导，结合储层的沉积展布特征，认为含油面积范围内无储层尖灭时，仅平面油层厚度差异较大的油藏平均有效厚度变小.含油面积范围内储层尖灭时，正常三角洲沉积储层的油藏各参数一般都变小；而辫状河三角洲沉积储层的油藏一般平均有效厚度变小，平均有效孔隙度和平均含油饱和度变大.这一结论可以有效指导储量评估过程中纵向细分计算单元方案划分，为同类油田的精细储量研究提供技术支撑.
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| 关 键 词： | 多层构造油藏 储量计算 储量参数 计算单元 容积法 |
| 收稿时间： | 2019-11-19 |
EFFECT OF VERTICAL SUBDIVISION OF COMPUTING UNITS ON RESERVE PARAMETERS AND RESULTS OF MULTILAYER STRUCTURAL RESERVOIR |
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| YAN Guan-shan,LIU Zong-bin,SONG Hong-liang,HAN Xue-fang,WANG Xin-ran.EFFECT OF VERTICAL SUBDIVISION OF COMPUTING UNITS ON RESERVE PARAMETERS AND RESULTS OF MULTILAYER STRUCTURAL RESERVOIR[J].Geology and Resources,2020,29(4):342-350. |
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| Authors: | YAN Guan-shan LIU Zong-bin SONG Hong-liang HAN Xue-fang WANG Xin-ran |
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| Institution: | Bohai Petroleum Research Institute, Tianjin Branch of CNOOC, Tianjin 300459, China |
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| Abstract: | For precise exploitation of oilfield in the middle-late stage and further adjustment and potential tapping, it is urgent to carry out more detailed study on reserves, among which the most important is vertical subdivision of computing units. For multilayer structural reservoir, the vertical subdivision is based on the distribution characteristics of interlayers and physical properties of single layer within the oil formation, taking single layers or layer combination with similar distribution characteristics or physical properties and continuously distributed vertically as computing units. According to the theoretical deduction of reserve optional parameters before and after the vertical subdivision of computing units, combined with the sedimentary distribution characteristics of reservoir, it is considered that when there is no reservoir pinch-out within the oil-bearing area, only the average effective thickness of reservoirs with large difference in the plane reservoir thickness are reduced. In the case that the reservoir is pinching out, the reservoir parameters of normal delta sedimentary reservoirs generally decrease; while the average effective thickness of braided river delta sedimentary reservoir decreases, and the average effective porosity and average oil saturation increases. The conclusions can effectively guide the vertical subdivision of computing units in reserves evaluation and provide technical support for the study of precise reserves in similar oilfields. |
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| Keywords: | multilayer structural reservoir reserve calculation reserve parameter computing unit volume method |
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