Masters Theses


Na Zhang

Keywords and Phrases

EOR prediction; Hierarchical clustering algorithm; Principal Component Analysis; Screening Criteria; Steam Flooding


"Enhanced Oil Recovery (EOR) techniques are vitally important in the oil industry because these techniques could not only extend the life of wells, but also produce 10% to 30% additional oil from the reservoir. However, selecting the most suitable EOR techniques for unknown reservoirs is not easy for decision making. Based on literature, EOR screening criteria could help to find the best candidates for unknown projects, which is classified into two categories: conventional EOR screening and advanced EOR screening. In this research, an artificial intelligent (AI) method, hierarchical clustering algorithm, is adapted to analyze both steam flooding projects and worldwide EOR projects for the purpose of new steam flooding screening criteria and the prediction of EOR methods for unknown reservoir conditions.

Data pre-processing process were firstly conducted to ensure the data quality, then the hierarchical clustering algorithm was applied to the worldwide steam flooding projects and the worldwide EOR projects; after that the principal component analysis (PCA) was used to identify the major attributes in all clusters, and to visualize the projects in different clusters in a scatter plot by retaining high variance; and then descriptive statistics of using box plot and scatter plot were utilized to establish the screening criteria for each cluster.

Three uniqueness were illustrated in this thesis. First, detailed screening criteria has been established based on the hierarchical clustering results. Second, categorical features (formation type) was considered as one of the impact factors for clustering, which none of the existing advanced screening criteria methods included. Third, dimensionality reduction techniques have been applied successfully which clusters are clearly laid out in a two dimensional scatter plot"--Abstract, page iii.


Wei, Mingzhen

Committee Member(s)

Bai, Baojun
Wunsch, Donald C.


Geosciences and Geological and Petroleum Engineering

Degree Name

M.S. in Petroleum Engineering


Missouri University of Science and Technology

Publication Date

Fall 2015


xiii, 86 pages

Note about bibliography

Includes bibliographical references (pages 81-85).


© 2015 Na Zhang, All rights reserved.

Document Type

Thesis - Open Access

File Type




Subject Headings

Enhanced oil recovery
Oil field flooding
Oil fields -- Production methods -- Research
Cluster analysis
Principal components analysis

Thesis Number

T 10808

Electronic OCLC #