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Petroleum reservoir

About: Petroleum reservoir is a research topic. Over the lifetime, 5403 publications have been published within this topic receiving 83535 citations. The topic is also known as: petroleum deposit.


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01 Jan 2006
TL;DR: In this article, a geologically-based reconstruction technique was used to generate virtual sandstone lithofacies in a North Sea oil reservoir and compared with those determined from microtomographic images of the actual rocks.
Abstract: We use a geologically based reconstruction technique to generate virtual rocks of complex sandstone lithofacies in a North Sea oil reservoir. Effective properties of the computer generated rocks, such as fluid permeability, electrical resistivity, and elastic moduli, are compared with those determined from microtomographic images of the actual rocks. The comparison largely shows an excellent agreement. Using network modeling techniques, we compute waterflood relative permeabilities for the computer generated rocks and compare them with experimental data. The experimental core samples exhibited large differences in wettability with measured Amott indices ranging from 0.3 to 0.7. The physical origin for this variation is not known. However, our results demonstrate clearly that for a fixed pore level distribution of wettability, both the residual oil saturation and the Amott index increases with increasing initial water saturation. This is caused primarily by reduced oil film stability in mixed wet pores. The present study demonstrates the potential and feasibility of combining computer generated rocks with numerical calculations to derive important rock and flow properties for reservoir rocks.

20 citations

Journal ArticleDOI
TL;DR: In this paper, a Discrete Fracture Network model was used to evaluate the hydraulic properties and permeability anisotropy of high-angle faults in the Agri-Valley.
Abstract: In the Agri Valley, high-angle faults crosscut platform carbonates that are analogues of the lithological units that host the deep seated largest onshore oil reservoir in Europe. The main faults are W-NW oriented with a left-lateral strike-slip kinematics; additionally, three sets of related secondary faults are present: ( i ) N-NE oriented with right-lateral/transtensional kinematics; ( ii ) E-W trending left-lateral transtensional and ( iii ) N-NW trending left-lateral transpressional. Two of the secondary N-NE striking faults, strike-slip and transtensional, together with the adjacent host rock, were selected to build a Discrete Fracture Network model eventually used to evaluate the hydraulic properties and permeability anisotropy of these faults. The outcomes of this modelling show that the total permeability of the fault zones is higher than that one of the host rock. Moreover, the results are consistent with the transtensional fault having higher permeability values relative to the strike-slip one. The permeability anisotropy within the fault damage zone as well as in the host rock is mainly related to the fracture orientation.

20 citations

Journal ArticleDOI
TL;DR: In this paper, a coupled reservoir-geomechanical modelling effort at Aztbach-Schwanenstadt gas field was conducted to evaluate the hydro-mechanical response of the reservoir rock and overburden formations to historical and current gas production rates, different CO 2 injection scenarios and its long-term storage.

20 citations

Journal ArticleDOI
TL;DR: Fracture reservoirs are present in the Verde, Boulder, West Puerto Chiquito, and East Pico oil fields of the San Juan basin, New Mexico as mentioned in this paper.
Abstract: Fracture reservoirs are present in the Verde, Boulder, West Puerto Chiquito, and East Puerto Chiquito oil fields of the San Juan basin, New Mexico. Brittle, competent siltstone and carbonate-rich interbeds within Cretaceous shale intervals are fractured in areas of maximum curvature along the Hogback monocline. Surface observations indicate that there are usually three sets of fractures along limbs of folds. Open fractures trend parallel with fold axes and occur on convex sides of folds. Dip fractures and oblique fractures are commonly tight. Exploration for traps with fracture reservoirs should focus on areas of maximum curvature of folds where brittle interbeds can be expected in the subsurface. Monoclines are common along the margins of many basins in the Rocky Mountain region and provide many exploration targets, as they probably formed at relatively low confining pressures, thus facilitating fracture of brittle rocks in the Cretaceous System.

20 citations

Journal ArticleDOI
TL;DR: In this paper, the effects of diagenetic processes on the reservoir quality of the carbonate successions of the Asmari Formation, in the Marun oil field, southwest Iran, were investigated.

20 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202336
202280
2021172
2020179
2019242
2018212