Assessment of  Residual Oil Saturation in a Large Carbonate  Reservoir

Pham, Tony; Al-Shahri, Ali

doi:10.2523/68069-ms

Cited by 2 publications

(2 citation statements)

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“…The thus estimated KwKo curve was normalized in terms of its terminal points (pairs (Swc, Krocw) and (1-Sorw, Krwro)). A residual oil saturation value was attributed to each cell in the simulation grid (that is, a Sorw map was constructed), grounded on the correlation with the connate water saturation (Swc) attained through the data obtained from reference (8). This correlation is shown on figure 5; the Sorw was, in average, around 30%.…”

Section: Rock Propertiesmentioning

confidence: 99%

The Role of the Value of Information and Long Horizontal Wells in the Appraisal and Development Studies of a Brazilian Offshore Heavy-Oil Reservoir

Branco

Pinto

Tinoco

et al. 2005

Proceedings of SPE/PS-CIM/CHOA International Thermal Operations and Heavy Oil Symposium

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fax 01-972-952-9435. AbstractRecent exploration efforts in the Campos Basin, offshore Brazil, have resulted into important discoveries of what is known as "offshore heavy oil" (API gravities below 18 and reservoir viscosities above 20 cp). Actually, these accumulations have been known since the beginning of the development of the Basin, in the 80s, but they were never given a chance of development due to the technology challenges involved. The maturation of lighter oil fields, associated with recent technology developments (1,2,3), has boosted the interest for these heavy oil resources set aside for many years. This paper describes the simulation model building process, the difficult task of assigning scarcely sampled rock and fluid properties, the uncertainty study and the use of quality maps for placing the wells. Simulations results have shown the importance of the well footage and its effectiveness in contacting the reservoir rock.

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Section: Rock Propertiesmentioning

confidence: 99%

The Role of the Value of Information and Long Horizontal Wells in the Appraisal and Development Studies of a Brazilian Offshore Heavy-Oil Reservoir

Branco

Pinto

Tinoco

et al. 2005

Proceedings of SPE/PS-CIM/CHOA International Thermal Operations and Heavy Oil Symposium

View full text Add to dashboard Cite

show abstract

“…The reservoir is gravity dominated which provides a bottoms-up sweep mechanism as explained by Pham (2) in a paper discussing the Residual Oil Evaluation in Ghawar Arab-D reservoir. As discussed later in the paper, this depletion mechanism was confirmed by the dual porositypermeability model which was used to evaluate the completion strategy.…”

Section: Geological Settingmentioning

confidence: 99%

Logistic Approach in Using an Array of Reservoir Simulation and Probabilistic Models in Developing a Giant Oil Reservoir with Super-Permeability and Natural Fractures

Pham

Al-Otaibi

Al-Ali

et al. 2002

Proceedings of SPE Annual Technical Conference and Exhibition

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TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractThe development of a large oil increment with superpermeability (super-K) layers, and natural fractures such as Haradh Arab-D poses many challenges, including the optimization of the number of start-up oil producers and injectors, and the selection of depletion mechanism which is preferably peripheral injection in this case. The type of well (vertical or horizontal), and completion intervals have to be investigated. In the case of horizontal wells, direction of the horizontal trajectory is always a difficult issue to decide as well as the optimized length of the horizontal section.Due to time constraints and the sheer size of the field areal extent (tens of kilometers) and the complex geology of the reservoir, it is not practical to construct a single full-field model which is expected to serve as an all-purpose simulation model that includes all of the reservoir attributes encompassing super-K layers, faults and fractures. This paper will discuss how to use an array of different reservoir simulation models to achieve the objectives within a timelimit dictated by the business plan requirements. Issues such as the number of start-up wells, the production plateau, type of wells, choice of completion intervals, optimized horizontal length, direction of horizontal trajectory can not be answered by one single model. However, each issue can be addressed by a specific model constructed for a single purpose. The development of an oil increment in Haradh is used to illustrate this concept.

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Assessment of Residual Oil Saturation in a Large Carbonate Reservoir

Cited by 2 publications

References 0 publications

The Role of the Value of Information and Long Horizontal Wells in the Appraisal and Development Studies of a Brazilian Offshore Heavy-Oil Reservoir

The Role of the Value of Information and Long Horizontal Wells in the Appraisal and Development Studies of a Brazilian Offshore Heavy-Oil Reservoir

Logistic Approach in Using an Array of Reservoir Simulation and Probabilistic Models in Developing a Giant Oil Reservoir with Super-Permeability and Natural Fractures

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