Geologic Modelling for Reservoir Simulation: Hanifa Reservoir, Berri Field, Saudi Arabia

The Upper Jurassic Hadriya and Hanifa carbonate grainstone reservoirs in Berri Field, Saudi Arabia, contain large reserves of Saudi Extra Light crude oil. New geologic models of each reservoir have been built using sequence-stratigraphic principles. These new models have a chronostratigraphic architecture which accommodates the facies transitions observed in cores sampled along the ramp-to-basin profile. Each reservoir contains, from oldest to youngest:a highstand systems tract represented by aggrading and prograding grainstones, capped by a type-2 (subaqueous) sequence boundary;a shelf margin wedge systems tract characterized by grainstones showing maximum basinward progradation; anda transgressive systems tract typified by a series of backstepping grainstones capped by a surface of relative drowning. These new models clarify the elements controlling fluid movement within the reservoirs. Introduction Berri field is located about 100 km north of Dhahran in the eastern provence of Saudi Arabia. The anticlinal trap lies partly on and partly offshore, just northeast of Jubail. Of the seven Upper Jurassic reservoirs in this field, the Hanifa and Hadriya are currently under full development because they contain Arabian Extra Light crude (Fig. 1). Both reservoirs have been undergoing peripheral water injection since 1973. In 1988 ARAMCO initiated a joint study with a team from Mobil Research and Development Corporation to construct new geologic models of the Hanifa and Hadriya reservoirs that would eventually be used for reservoir simulation. Sequence stratigraphic principles were used in formulating the new models. Since no high-resolution seismic data was available over Berri Field, sequence stratigraphic interpretations were based solely on core and log data. This included 33 cores and 92 logs in the Hadriya, and 32 cores and 142 logs in the Hanifa. The application of sequence stratigraphic principles led to the recognition of previously undefined reservoir geometries. Subsequent integration of production and engineering data confirmed the importance of these geometries in controlling fluid distribution and movement. The new correlations had an especially profound affect on the three dimensional architecture of the Hanifa reservoir. PALEOGEOGRAPHIC SETTING The Middle Jurassic Arabian Platform was characterized by minimal platform-interior bathymetric relief and by widespread shallow-marine, carbonate sedimentation. Beginning in the Upper Jurassic, however, a series of intrashelf basins and intervening arches were formed (Fig 2). The intrashelf Arabian Basin was separated from the Southern Gulf Basin of Qatar and the United Arab Emirates by the Qatar Arch. P. 489^

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“…The models provide reliable templates for porosities and permeabilities to be distributed throughout the reservoirs [4,7].…”

Section: Resultsmentioning

confidence: 99%

Importance of Sequence Stratigraphic Concepts in Development of Reservoir Architecture in Upper Jurassic Grainstones, Hadriya and Hanifa Reservoirs, Saudi Arabia

McGuire

Koepnick

Markello

et al. 1993

Middle East Oil Show

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“…Subsurface equivalent porosity and permeability of the modeled facies (Kompanik et al, 1993;Lucia et al, 2001;Al-Khalifah and Makkawi, 2002). analog to the typical state of Middle Eastern field developments (Vahrenkamp et al, 2019).…”

Section: Tablementioning

confidence: 99%

Three-dimensional morphometric analysis and statistical distribution of the Early Kimmeridgian Hanifa Formation stromatoporoid/coral buildups, central Saudi Arabia

Ramdani

Khanna

Sander³

et al. 2022

Marine and Petroleum Geology

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“…5 Facies patterns developed in broad east-west oriented bands that grade from algal grainstones in the north to lime mudstones in the south. 5 Facies patterns developed in broad east-west oriented bands that grade from algal grainstones in the north to lime mudstones in the south.…”

Section: Geologymentioning

confidence: 99%

MPP Simulation of Complex Water Encroachment in a Large Carbonate Reservoir in Saudi Arabia

Joe¹

2001

Proceedings of SPE Annual Technical Conference and Exhibition

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TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractReservoir simulation has entered a new era with the advent of massively parallel processing and its ability to handle millions of cells. In this study a simulation model was constructed from the geologic model without scale up, the resulting model having 1.38 million cells. The majority of effort was spent on reviewing geologic and engineering data. History match changes were made at the well level and interpolated in Kh and Kv arrays using a deterministic mapping routine. Despite the complexity and model size, a successful history match was achieved in 40 runs. The model has been very successful in identifying well locations for bypassed oil recovery.

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Geologic Modelling for Reservoir Simulation: Hanifa Reservoir, Berri Field, Saudi Arabia

Cited by 12 publications

References 1 publication

Importance of Sequence Stratigraphic Concepts in Development of Reservoir Architecture in Upper Jurassic Grainstones, Hadriya and Hanifa Reservoirs, Saudi Arabia

Importance of Sequence Stratigraphic Concepts in Development of Reservoir Architecture in Upper Jurassic Grainstones, Hadriya and Hanifa Reservoirs, Saudi Arabia

Three-dimensional morphometric analysis and statistical distribution of the Early Kimmeridgian Hanifa Formation stromatoporoid/coral buildups, central Saudi Arabia

MPP Simulation of Complex Water Encroachment in a Large Carbonate Reservoir in Saudi Arabia

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