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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/978

Title: Laboratory Study on the Effect of Horizontal-vertical Well Configurations on Oil Recovery Using Sodium Hydroxide
Authors: El-Sayed, A.H.
AI-Blehed, M.S.
Attia, A.M.
Issue Date: 1996
Publisher: King Saud University
Citation: Journal of King Saud University Engineering Sciences: 8 (1); 59-75
Abstract: This paper presents a laboratory-scale experimental investigation on the performance of hori-zontal- vertical well configurations in conjunction with oil recovery by alkaline flooding. Emphasis focuses on the effect of the horizontal well position and length on oil recovery. The effect of three alkali solution types, [i.e. sodium carbonate (Na2CO3), sodium ortho-silicate (Na4SiO4) , and sodium hydroxide (NaOH)] on cumulative oil yield, in both secondary and tertiary recovery processes is also investigated, using a linear model and various horizontal-vertical schemes. It was found that displacing Safaniya crude oil by a 1% NaOH solution results in higher oil recoveries in both linear and horizontal-vertical schemes. Moreover, the highest oil recovery through horizontal-ver-tical schemes was obtained by positioning the horizontal well perpendicular to the line connecting both vertical producing wells with a length that does not extend to the reservoir boundary. It was also found that the oil displacement efficiency in the tertiary process is much higher than that encountered in the secon-dary process. Also, increasing horizontal well length in a limited reservoir area does not increase the cumulative oil recovery.
URI: http://hdl.handle.net/123456789/978
Appears in Collections:College of Engineering

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