Evaluation of Petrophysical Properties of Mishrif, Rumiala, Ahmadi, and Mauddud Formations in Nasiriya Oil Field—Middle of Iraq

IF 1.3 4区工程技术 Q3 CHEMISTRY, ORGANIC Petroleum Chemistry Pub Date : 2024-10-29 DOI:10.1134/S0965544124050062

Hiba Tarq Jaleel, Ahmed S. Al-Banna

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Abstract

Petrophysical parameters were assessed using comprehensive log data coming from two wells (Ns-2, Ns-4) located within the Mishrif, Rumaila, Ahmadi, and Mauddud formations within the Nasiriya oil field, Iraq. The logs were digitized using Techlog 2015 software, and environmental modifications were implemented to guarantee precise interpretations. The shale volume used to be determined using gamma ray (GR) logs, subsequently leading towards the calculation of the effectiveness porosity. Water saturation is used to be calculated alongside Archie's equation. The investigation indicated that the lithology regarding the Mishrif, Rumaila, Ahmadi, and Mauddud formations happens to be predominantly limestone, alongside calcite like the principal mineral within the matrix. All formations were found to contain water like the fluid type, except within favor regarding the Mishrif formation at the 2013–2046 m within Ns-2, and 2000–2060 m within Ns-4, where hydrocarbons were identified. The top strata for these depths comprise substantial shale alongside limited effective porosity, serving like cap rock at the depths from 2013 to 2016 m within Ns-2, and 2000 towards 2006 m within Ns-4.

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伊拉克中部纳西里耶油田 Mishrif、Rumiala、Ahmadi 和 Mauddud 地层的岩石物理特性评估

利用位于伊拉克纳西里耶油田 Mishrif、Rumaila、Ahmadi 和 Mauddud 地层的两口油井（Ns-2、Ns-4）的综合测井数据对岩石物理参数进行了评估。使用 Techlog 2015 软件对测井进行了数字化，并进行了环境修改，以确保精确解释。使用伽马射线（GR）测井确定页岩体积，然后计算有效孔隙度。含水饱和度根据阿奇方程进行计算。调查表明，Mishrif、Rumaila、Ahmadi 和 Mauddud 地层的岩性主要是石灰岩，基质中的主要矿物是方解石。所有地层都发现含有水这种流体类型，只有在 Ns-2 的 2013-2046 米和 Ns-4 的 2000-2060 米处的 Mishrif 地层中发现了碳氢化合物。这些深度的顶部地层由大量页岩和有限的有效孔隙度组成，在 Ns-2 的 2013 至 2016 米深度和 Ns-4 的 2000 至 2006 米深度像盖层岩石一样。

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来源期刊

Petroleum Chemistry 工程技术-工程：化工

CiteScore

2.50

自引率

21.40%

发文量

102

审稿时长

6-12 weeks

期刊介绍： Petroleum Chemistry (Neftekhimiya), founded in 1961, offers original papers on and reviews of theoretical and experimental studies concerned with current problems of petroleum chemistry and processing such as chemical composition of crude oils and natural gas liquids; petroleum refining (cracking, hydrocracking, and catalytic reforming); catalysts for petrochemical processes (hydrogenation, isomerization, oxidation, hydroformylation, etc.); activation and catalytic transformation of hydrocarbons and other components of petroleum, natural gas, and other complex organic mixtures; new petrochemicals including lubricants and additives; environmental problems; and information on scientific meetings relevant to these areas. Petroleum Chemistry publishes articles on these topics from members of the scientific community of the former Soviet Union.