The analysis and interpretation of water-oil-ratio performance in petroleum reservoirs /

Our goal in this work is to develop and validate a multivariate relation for the behavior of the water-oil-ratio (WOR) and/or water cut (f[]) functions, where this relation would incorporate the reservoir and fluid properties for both phases (oil and water). The only significant assumption that we...

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Bibliographic Details
Main Author: Bondar, Valentina, 1973-
Format: Thesis eBook
Language:English
Published: [Place of publication not identified] : [publisher not identified] ; 2001.
Subjects:
Online Access:Link to OAKTrust copy

MARC

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099 |a 2001  |a Thesis  |a B64 
100 1 |a Bondar, Valentina,  |d 1973- 
245 1 4 |a The analysis and interpretation of water-oil-ratio performance in petroleum reservoirs /  |c by Valentina Bondar. 
264 1 |a [Place of publication not identified] :  |b [publisher not identified] ;  |c 2001. 
300 |a volumes :  |b illustrations ;  |c 28 cm. 
336 |a text  |b txt  |2 rdacontent 
337 |a computer  |b c  |2 rdamedia 
338 |a online resource  |b cr  |2 rdacarrier 
500 |a "Major subject: Petroleum Engineering". 
500 |a Vita. 
502 |b M.S.  |c Texas A&M University  |d 2001. 
504 |a Includes bibliographical references (leaves 79-80). 
520 |a Our goal in this work is to develop and validate a multivariate relation for the behavior of the water-oil-ratio (WOR) and/or water cut (f[]) functions, where this relation would incorporate the reservoir and fluid properties for both phases (oil and water). The only significant assumption that we make in this work is that pseudosteady-state flow conditions must exist in the entire reservoir system. Our proposed model is an extension of traditional (i.e., steady-state) methods for the case of pseudosteady-state flow - for both the oil and water phases. In this work, the pseudosteady-state model reproduces observed field performance substantially better than any of the steady-state models. We believe that this approach can be applied to any reservoir system undergoing waterflood. The specific tasks achieved in this work include: 1. Development of a rigorous model for the simultaneous flow of oil and water at pseudosteady-state flow conditions. This model has been validated against 28 different field cases (all cases are included in Appendices A and B), and in all cases, the new model gives an excellent representation of the data. 2. Development of a "reciprocal rate plot" for the estimation of both the original oil-in-place (N), as well as the "movable oil" (N[][]) at current producing conditions. This approach requires a plot of the reciprocal rate (1/q[]) versus the "oil material balance time," (N[]/q[]). 3. Development of a diagnostic technique for assessing (qualitatively) the efficiency/ effectiveness of a waterflood. This technique involves the use of the following log-log format plots: (the "associated functions" include the WOR-derivative, the WOR-integral, and the WOR-integral-derivative functions) -- WOR and WOR associated functions versus production time. WOR and WOR associated functions versus N[]/q[]. WOR and WOR associated functions versus (N[]+W[])/ (q[]+q[]). 4. Application/interpretation of the following extrapolation methods for the water-oil-ratio (WOR) and the water cut (f[]) functions: q[] versus N[]. log(f[]) versus N[]. 1/f[] versus N[]. f[] versus N[]. log(WOR) versus N[]. Unfortunately, the formulation of the two-phase (oil-water), pseudosteady-state flow relation does not provide for a simple extrapolation formula for the estimation of movable fluids. This is an area for further investigation. 
530 |a Also available online. 
530 |a Issued also on microfiche from Lange Micrographics. 
650 4 |a Major petroleum engineering. 
856 4 1 |u https://hdl.handle.net/1969.1/ETD-TAMU-2001-THESIS-B64  |z Link to OAKTrust copy  |t 0 
948 |a cataloged  |b h  |c 2002/4/2  |d c  |e eneff  |f 11:58:09 am 
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952 f f |p noncirc  |a Texas A&M University  |b College Station  |c Cushing Memorial Library & Archives  |s cush tdrm  |d Cushing: Theses & Dissertations Microforms (Does not check out)  |t 0  |e 2001 Thesis B64  |h Other scheme  |i computer -- online resource 
952 f f |a Texas A&M University  |b College Station  |c Electronic Resources  |s www_evans  |d Available Online  |t 0  |e 2001 Thesis B64  |h Other scheme 
998 f f |a 2001 Thesis B64  |t 0  |l Cushing: Theses & Dissertations Microforms (Does not check out) 
998 f f |a 2001 Thesis B64  |t 0  |l Available Online