Integrated reservoir characterization of the Paleocene Farewell Formation, Taranaki Basin, New Zealand, using petrophysical and petrographical analyses

Jumat, Nurhazwana; Shalaby, Mohamed Ragab; Islam, Md. Aminul

doi:10.1007/s13202-017-0420-5

Cited by 31 publications

(4 citation statements)

References 10 publications

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“…Porosity and permeability are the most critical physical properties of the cement matrix. Porosity is primarily related to the number of void spaces in the cement sample, while permeability is related to the connections between these gaps . For porosity and permeability studies, cylindrical cement samples with a length of 2 in.…”

Section: Methodsmentioning

confidence: 99%

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Advanced Solutions for Oil-Well Cementing in High-Pressure High-Temperature Oil Wells Using Nano-Gilsonite

Shahzar,

Kalita,

Azin

et al. 2024

Energy Fuels

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Proper annular sealing is imperative for isolating wellbores, preventing leaks to the surface and protecting groundwater during oil drilling operations. Cementing between the casing and borehole is crucial, yet cement failures potentially risk disastrous leaks and massive economic losses for exploration and production companies. Novel additives such as gilsonite nanoparticles (NPs) present a promising solution to enhance cement integrity. This study investigated the effects of incorporating gilsonite NPs on cement performance under conditions mimicking typical downhole environments. Cement slurries were formulated using a water-to-cement ratio of 0.44 and a calcium chloride content of 2% by weight of cement (BWOC). The concentration of gilsonite NPs varied from 0.01 to 0.04% BWOC. The slurries were tested for rheology, morphology, crystallization, and compressive strength following American Petroleum Institute guidelines and compared to the base slurry. Significant cement property improvements were achieved with gilsonite NPs. The addition of 0.04% BWOC gilsonite resulted in a significant 53% increase in compressive strength, from 4777 (base) to 7306 psi, after curing at 100 °C and 1000 psi. Real-time strength development showed an accelerated setting and higher ultimate strength. Fluid loss was reduced by 32% compared to that of the base slurry. The slurries exhibited enhanced shear-thickening behavior and gel strength. Young's modulus decreased, while Poisson's ratio increased, indicating improved flexibility. Porosity and permeability decreased by 29 and 76%, respectively, at 0.04% concentration. Microstructural analysis revealed a denser, more compact cement matrix with improved particle bonding. Further work should examine the performance following accelerated age testing. The mechanical, rheological, and physical enhancements could enable long-term cement sheath integrity over decades of good life, preventing leakage and associated consequences.

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Section: Methodsmentioning

confidence: 99%

“…Porosity is primarily related to the number of void spaces in the cement sample, while permeability is related to the connections between these gaps. 33 For porosity and permeability studies, cylindrical cement samples with a length of 2 in. and a diameter of 1.5 in.…”

Section: Strength Measurementsmentioning

confidence: 99%

Advanced Solutions for Oil-Well Cementing in High-Pressure High-Temperature Oil Wells Using Nano-Gilsonite

Shahzar,

Kalita,

Azin

et al. 2024

Energy Fuels

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“…The sedimentological and petrographical studies concluded that the reservoir quality of the McKee sandstone was controlled by depositional and diagenetic processes. Depositional control largely influenced the textural parameters such as grain size, compositional framework, sorting and the primary fabrics [25]. In general, the aforementioned parameters primarily affected both the porosity and permeability of the reservoir facies.…”

Section: Depositional Controlmentioning

confidence: 99%

Integrated Reservoir Characterization Study of the McKee Formation, Onshore Taranaki Basin, New Zealand

2018

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The Late Eocene onshore McKee Formation is a producing reservoir rock in Taranaki Basin, New Zealand. An integrated petrophysical, sedimentological, and petrographical study was conducted to evaluate the reservoir characteristics of the McKee sandstone. A petrographic study of the McKee Formation classified the sandstone as arkose based on the Pettijohn classification. Porosity analysis showed predominantly intergranular porosity, as elucidated by the thin section photomicrographs. The good reservoir quality of McKee sandstone was suggested to be the result of the presence of secondary dissolution pores interconnected with the primary intergranular network. Mineral dissolution was found to be the main process that enhanced porosity in all the studied wells. On the other hand, the presence of clay minerals, cementation, and compaction were identified as the main porosity-reducing agents. These features, however, were observed to occur only locally, thus having no major impact on the overall reservoir quality of the McKee Formation. For a more detailed reservoir characterization, well log analysis was also applied in the evaluation of the McKee Formation. The result of the well log analysis showed that the average porosity ranged from 11.8% to 15.9%, with high hydrocarbon saturation ranging from 61.8% to 89.9% and clay volume content ranging from 14.9 to its highest value of 34.5%. Based on the well log analysis, the derived petrophysical and reservoir parameters exhibited good porosity, low clay content, and high hydrocarbon saturation, which indicates that the McKee Formation is a promising reservoir.

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“…Rock typing is the process of assigning reservoir properties to geological facies, and an ideal rock type has similar geological and reservoir properties. There are three main categories for this process including geology, reservoir (static properties), and petrophysics (Tavakoli 2018) Depositional environments are important to the performance of the reservoir as they have a dominant influence on the original pore network of newly deposited sediments, the pore network formation determines the characteristics of the framework grains, such as grain size and sorting, and all these parameters in turn control porosity and permeability; textural features supporting good reservoir quality of a reservoir are coarse-grained sediments with good sorting (Jumat et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Integrated reservoir characterization and quality analysis of the carbonate rock types, case study, southern Iraq

Al-Jawad

Ahmed

Saleh

2020

J Petrol Explor Prod Technol

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The reservoir characterization and rock typing is a significant tool in performance and prediction of the reservoirs and understanding reservoir architecture, the present work is reservoir characterization and quality Analysis of Carbonate Rock-Types, Yamama carbonate reservoir within southern Iraq has been chosen. Yamama Formation has been affected by different digenesis processes, which impacted on the reservoir quality, where high positively affected were: dissolution and fractures have been improving porosity and permeability, and destructive affected were cementation and compaction, destroyed the porosity and permeability. Depositional reservoir rock types characterization has been identified depended on thin section analysis, where six main types of microfacies have been recognized were: packstone-grainstone, packstone, wackestone-packstone, wackestone, mudstone-wackestone, and mudstone. By using flow zone indicator, four groups have been defined within Yamama Formation, where the first type (FZI-1) represents the bad quality of the reservoir, the second type (FZI-2) is characterized by the intermediate quality of the reservoir, third type (FZI-3) is characterized by good reservoir quality, and the fourth type (FZI-4) is characterized by good reservoir quality. Six different rock types were identified by using cluster analysis technique, Rock type-1 represents the very good type and characterized by low water Saturation and high porosity, Rock type-2 represents the good rock type and characterized by low water saturation and medium–high porosity, Rock type-3 represents intermediate to good rock type and characterized by low-medium water saturation and medium porosity, Rock type-4 represents the intermediate rock type and characterized by medium water saturation and low–medium porosity, Rock type-5 represents intermediate to bad rock type and characterized by medium–high water saturation and medium–low porosity, and Rock type-6 represents bad rock type and characterized by high water saturation and low porosity. By using Lucia Rock class typing method, three types of rock type classes have been recognized, the first group is Grain-dominated Fabrics—grainstone, which represents a very good rock quality corresponds with (FZI-4) and classified as packstone-grainstone, the second group is Grain-dominated Fabrics—packstone, which corresponds with (FZI-3) and classified as packstone microfacies, the third group is Mud-dominated Fabrics—packstone, packstone, correspond with (FZI-1 and FZI-2) and classified as wackestone, mudstone-wackestone, and mudstone microfacies.

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Integrated reservoir characterization of the Paleocene Farewell Formation, Taranaki Basin, New Zealand, using petrophysical and petrographical analyses

Cited by 31 publications

References 10 publications

Advanced Solutions for Oil-Well Cementing in High-Pressure High-Temperature Oil Wells Using Nano-Gilsonite

Advanced Solutions for Oil-Well Cementing in High-Pressure High-Temperature Oil Wells Using Nano-Gilsonite

Integrated Reservoir Characterization Study of the McKee Formation, Onshore Taranaki Basin, New Zealand

Integrated reservoir characterization and quality analysis of the carbonate rock types, case study, southern Iraq

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