Masters Theses

Author

Jingyi Liao

Keywords and Phrases

Gel; Production wells; Survey; Treatment; Water shut off

Abstract

"Enhanced oil recovery (EOR) screening criteria are considered as a guideline for candidate evaluation and determination. Not many screening criteria for gel treatment had been published. Some published gel treatment application surveys for water shut off only include limited number of oil fields and locations.

The current work aims to summarize the worldwide gel treatment applications for water shut off in production wells by creating and analyzing a dataset from a variety of sources. This study started from collecting and cleaning the gel treatment application data. All the data were from SPE field publications from 1990 to 2012 and from Petroleum Technology Transfer Council database. Only production wells gel treatment application projects were included in this study. Failed projects were detected and deleted by the proposed method. The original dataset included 56 fields and 415 wells. Upon deleting the projects with insufficient information, 33 fields and 160 wells remained. After improving the dataset quality, both graphical and statistical methods were utilized to analyze the data. Histograms and box plots were used to show the distribution of each parameter and present the range of the data. Gel type selection, injection method, pre-flush method, and post flush method were analyzed by bar charts to show the gel treatment usage conditions. For analyzing the treatment results, cross plots were constructed to compare oil wells production before and after treatments. Oil wells candidate selection criteria were discussed. To improve the success rate for future gel applications, the reasons for past failure field cases were summarized, and the treatment limitations were listed. In addition, economic analysis based on cost and payback time was also discussed"--Abstract, page iii.

Advisor(s)

Bai, Baojun

Committee Member(s)

Wei, Mingzhen
Flori, Ralph E.

Department(s)

Geosciences and Geological and Petroleum Engineering

Degree Name

M.S. in Petroleum Engineering

Publisher

Missouri University of Science and Technology

Publication Date

Fall 2014

Pagination

xii, 82 pages

Note about bibliography

Includes bibliographic references (pages 79-81).

Rights

© 2014 Jingyi Liao, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Library of Congress Subject Headings

Enhanced oil recovery
Oil fields -- Production methods
Gelation

Thesis Number

T 10587

Electronic OCLC #

902734496

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