The Measurement and Significance of Sub-Surface Pressures in Oil Fields

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Abstract/Contents

Abstract
The practical study of sub-surface pressures in oil fields may be considered to be a recent one. Though it is impossible to set an exact date when constructive thinking on the subject first began, nevertheless, evidence is available that thought was given to the problem as far back as 1917. Its widespread interest, however, was not evident until 1927. One of the first papers to appear in this country, written for the express intent of advocating the value and importance of sub-surface pressure determinations, was presented in 1925 by K.C. Scater and E.R. Stephenson . This was followed by numerous other papers until the present date.The part played by sub-surface pressure in the production of oil and gas is now generally realized within oil wells is of increasing importance to the petroleum production engineer. It provides information generally not otherwise available, which experience has proved is a valuable guide to more operation. The information may be of positive character, indicating that full capacity to produce is not being realized; or of negative character, which indicates that no greater quantity of oil is available and therefore further expenditure in trying to secure greater production is unwarranted. Recent progress in oil-recovery methods has brought into prominence gas-energy relations in oil sands. The greater the effort made to utilize this gas-energy relationship to the best advantage in oil recovery, the greater becomes the need for more precise information concerning physical conditions as they actually exist in an oil well.Sub-surface pressures have offered a new line of attack, and furnish valuable and concrete information relative to existing conditions in the reservoir on the problems of equitable proratlon and unitization. Attempts have been made to predict ultimate recovery from reservoirs with the aid of information on sub-surface pressure. Sub-surface data are now being used to determine the productivity factors of wells. They may also be used to afford better selection of pumping equipment, flow strings, and compressor units for gas-lift wells.The practical application of sub-surface pressures creates a great variety of problems. It is the purpose of this research to gather together the methods of measurement and the applications of sub-surface pressure that have ben introduced by the engineer of the industry, and to make a study of each.

Description

Type of resource text
Date created June 1937

Creators/Contributors

Author Young, John Chew
Primary advisor Tickell, Frederick George
Degree granting institution Stanford University, Department of Mining Engineering

Subjects

Subject School of Earth Energy & Environmental Sciences
Genre Thesis

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User agrees that, where applicable, content will not be used to identify or to otherwise infringe the privacy or confidentiality rights of individuals. Content distributed via the Stanford Digital Repository may be subject to additional license and use restrictions applied by the depositor.

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Preferred Citation
Young, John Chew. (1937). The Measurement and Significance of Sub-Surface Pressures in Oil Fields. Stanford Digital Repository. Available at: https://purl.stanford.edu/ms513bj7840

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Master's Theses, Doerr School of Sustainability

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