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Application of 3D Static Modelling in Reservoir Characterization: A Case Study from the Qishn Formation in Sharyoof Oil Field, Masila Basin, Yemen
Acta Geologica Sinica-English Edition ( IF 3.5 ) Pub Date : 2021-06-21 , DOI: 10.1111/1755-6724.14766 Emad A. ABDULLAH 1 , Ahmed ABDELMAKSOUD 2, 3 , Musab A. HASSAN 1
Acta Geologica Sinica-English Edition ( IF 3.5 ) Pub Date : 2021-06-21 , DOI: 10.1111/1755-6724.14766 Emad A. ABDULLAH 1 , Ahmed ABDELMAKSOUD 2, 3 , Musab A. HASSAN 1
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Three-dimensional (3D) static modelling techniques are applied to the characterization of the Qishn Formation (Fm.) in the Sharyoof oil field locating within the Masila basin, southeastern Yemen. The present study was initiated by the seismic structural interpretation, followed by building a 3D structural framework, in addition to analysing well log data and from these, 3D facies and petrophysical models are constructed. In the Sharyoof oil field, the Qishn Fm. exhibits depth values within the range of 400–780 m below sea level, with a general increase towards the SSE. A set of high dip angle normal faults with a general ENE–WSW trend dissect the rocks. The strata are also folded as a main anticline with an axis that is parallel to the fault trend, formed as a result of basement uplift. According to the facies models, the Qishn Fm. comprises 43.83% limestone, 21.53% shale, 21.26% sandstone, 13.21% siltstone and 0.17% dolomite. The Qishn Carbonates Member has low porosity values making it a potential seal for the underlying reservoirs whereas the Upper Qishn Clastics S1A and C have good reservoir quality and S1B has fair reservoir quality. The Upper Qishn Clastics S2 and S3 also have fair reservoir quality, while the Lower Qishn Clastics zone has good reservoir quality. The water saturation decreases towards the west and east and increases towards north and south. The total original oil in-place (OOIP) of the Upper Qishn clastics is 106 million STB within the S1A, S1C and S2 zones. Drilling of development wells is recommended in the eastern study area, where good trapping configuration is exhibited in addition to the presence of a potential seal (Upper Qishn Carbonates Member) and reservoir (Qishn Clastics Member) with high porosity and low water saturation.
中文翻译：
3D 静态建模在储层表征中的应用：以也门 Masila 盆地 Sharyoof 油田 Qishn 组为例
三维 (3D) 静态建模技术应用于位于也门东南部 Masila 盆地内的 Sharyoof 油田的 Qishn 组 (Fm.) 的表征。本研究从地震构造解释开始，随后构建了 3D 构造框架，除了分析测井数据，并据此构建了 3D 相和岩石物理模型。Sharyoof油田，Qishn组。表现出海平面以下400-780 m范围内的深度值，向SSE普遍增加。一组具有一般 ENE-WSW 趋势的高倾角正断层剖析岩石。地层也折叠成一条主背斜，其轴线与断层走向平行，是基底隆起的结果。相模型显示，奇新组。包括 43 个。83% 石灰岩、21.53% 页岩、21.26% 砂岩、13.21% 粉砂岩和 0.17% 白云岩。齐顺碳酸盐岩段孔隙度值低，使其成为潜在的下伏储层封闭，而上齐顺碎屑岩 S1A 和 C 段具有良好的储层质量，S1B 具有良好的储层质量。上祁顺碎屑岩S2、S3段储集层质量较好，下祁申碎屑岩带储层质量较好。含水饱和度向西和向东降低，向北和向南增加。在 S1A、S1C 和 S2 带内，上祁顺碎屑岩的总原始石油储量（OOIP）为 1.06 亿 STB。建议在东部研究区钻开发井，
更新日期：2021-06-21
中文翻译：
3D 静态建模在储层表征中的应用：以也门 Masila 盆地 Sharyoof 油田 Qishn 组为例
三维 (3D) 静态建模技术应用于位于也门东南部 Masila 盆地内的 Sharyoof 油田的 Qishn 组 (Fm.) 的表征。本研究从地震构造解释开始，随后构建了 3D 构造框架，除了分析测井数据，并据此构建了 3D 相和岩石物理模型。Sharyoof油田，Qishn组。表现出海平面以下400-780 m范围内的深度值，向SSE普遍增加。一组具有一般 ENE-WSW 趋势的高倾角正断层剖析岩石。地层也折叠成一条主背斜，其轴线与断层走向平行，是基底隆起的结果。相模型显示，奇新组。包括 43 个。83% 石灰岩、21.53% 页岩、21.26% 砂岩、13.21% 粉砂岩和 0.17% 白云岩。齐顺碳酸盐岩段孔隙度值低，使其成为潜在的下伏储层封闭，而上齐顺碎屑岩 S1A 和 C 段具有良好的储层质量，S1B 具有良好的储层质量。上祁顺碎屑岩S2、S3段储集层质量较好，下祁申碎屑岩带储层质量较好。含水饱和度向西和向东降低，向北和向南增加。在 S1A、S1C 和 S2 带内，上祁顺碎屑岩的总原始石油储量（OOIP）为 1.06 亿 STB。建议在东部研究区钻开发井，
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