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Automatic Hydraulic Fracturing Design For Low Permeability Reservoirs Using Artificial Intelligence, Andrei Sergiu Popa
Automatic Hydraulic Fracturing Design For Low Permeability Reservoirs Using Artificial Intelligence, Andrei Sergiu Popa
Graduate Theses, Dissertations, and Problem Reports
The hydraulic fracturing technique is one of the major developments in petroleum engineering in the last two decades. Today, nearly all the wells completed in low permeability gas reservoirs require a hydraulic fracturing treatment in order to produce at an economical level. This study presents a new methodology, applicable to tight gas reservoirs, for designing hydraulic fractures.;This study is intended to develop an automatic hydraulic fracture design tool to help users design fracture jobs without being an expert in the art and science of hydraulic fracturing. This process is composed entirely of an integration of several artificial intelligence techniques.;The methodology …
Development Of A Program To Gather And Process Data From Oil And Gas Fields, Joshua R. Cook
Development Of A Program To Gather And Process Data From Oil And Gas Fields, Joshua R. Cook
Graduate Theses, Dissertations, and Problem Reports
In this thesis new software is developed to examine the needs and available options to gather information from oil and gas fields and to analyze data in an efficient manner. The program outlines potential setups as well as practical analysis techniques. The result is a program to store field data and capability to analyze input in different formats.;The developed system uses accounting, economics, engineering, and management concepts to process data. The program uses the relationships between field data gathered in a number of methods. The developed program provides a useful tool for the engineer to gather oil and gas field …
Impact Of Langmuir Isotherm On Production Behavior Of Cbm Reservoirs, Efundem Ndipanquang Arrey
Impact Of Langmuir Isotherm On Production Behavior Of Cbm Reservoirs, Efundem Ndipanquang Arrey
Graduate Theses, Dissertations, and Problem Reports
Coalbed Methane is an unconventional gas resource that consists of methane production from the coal seams. CBM reservoir performance is also influenced by the interrelationship of reservoir, geologic, and operation parameters. Coalbed methane production performance is considered complex and difficult to analyze especially at the early stages of recovery.;This study was conducted to develop type curves which predict the impact of Langmuir Isotherms on production behavior on a Coalbed Methane reservoir in order to evaluate the economic feasibility and to maximize potential recovery. In order to achieve this objective, the impact of Langmuir isotherm constant on production type curves was …
Natural Gas Exploration Associated With Fracture Systems In Alleghenian Thrust Faults In The Greenbrier Formation, Southern West Virginia, Craig A. Edmonds
Natural Gas Exploration Associated With Fracture Systems In Alleghenian Thrust Faults In The Greenbrier Formation, Southern West Virginia, Craig A. Edmonds
Graduate Theses, Dissertations, and Problem Reports
A hydrocarbon play has been identified in southern West Virginia targeting the intersection of thrust faults with specific Mississippian reservoirs. Late Paleozoic sandstone and limestone reservoirs are traditional pays of the study area, often yielding economic natural gas production, with initial production rates ranging between 100 to 200 Mcf per day per well. In contrast, production rates from wells that encounter faults often exceed 500 Mcf per day. We believe this prolific production results from secondary fracture porosity and enhanced permeability from fracture zones associated with thrust faults, providing a conduit to the Union Oolite reservoir member of the Greenbrier …
Permeability Prediction From Well Log Data Using Multiple Regression Analysis, Janaina Luiza Lobato Pereira
Permeability Prediction From Well Log Data Using Multiple Regression Analysis, Janaina Luiza Lobato Pereira
Graduate Theses, Dissertations, and Problem Reports
An accurate reservoir description is very important in reservoir evaluation, and permeability prediction is the key for a successful characterization. However, despite its importance, obtaining permeability values through the reservoir is not a trivial task. It is costly and time-consuming.;Many are the techniques available in the literature, involving correlations between core and log data that provide means to obtain permeability.;The present work describes how to predict permeability through the statistical analysis multiple regression having log data and limited core data, making it possible to expand the prediction to uncored wells. It also takes into consideration the attributes of flow unit …
Identification Of Technical Barriers And Preferred Practices For Oil Production In The Appalachian Basin, Sandra M. Del Bufalo Paez
Identification Of Technical Barriers And Preferred Practices For Oil Production In The Appalachian Basin, Sandra M. Del Bufalo Paez
Graduate Theses, Dissertations, and Problem Reports
The Appalachian Basin is characterized by great number of stripper wells and marginally producing oilfields that face a number of production problems. The purpose of this study was to identify the main problematic issues and preferred solutions for oil production in the Appalachian Basin. Investigation and identification of oil production problems and preferred solutions began with searches in the Society of Petroleum Engineer (SPE) library, and Petroleum Technology Transfer Council (PTTC) website. In addition, journals, workshop, conference were used to find additional information. Formal interviews were arranged with oil producers to gain more insight into problems in the Appalachian Basin. …
Development Of Gas Production Type Curves For Coalbed Methane Reservoirs, Anangela Garcia Arenas
Development Of Gas Production Type Curves For Coalbed Methane Reservoirs, Anangela Garcia Arenas
Graduate Theses, Dissertations, and Problem Reports
Coalbed methane is an unconventional gas resource that consists on methane production from the coal seams. The unique coal characteristic results in a dual-porosity system. CBM reservoir performance is also influenced by the interrelationship of reservoir, geologic, and operation parameters. Coalbed methane production data is considered a complex and difficult to analyze especially at the early stages of the recovery.;This study was conducted to develop a simple and reliable tool to predict the performance of CBM in The Northern Appalachian Basin. To achieve this objective, four steps were performed. A unique set of gas production type curves for coalbed methane …
Permeability And Strength Of Artificially Controlled Porous Media, Suresh Pasumarty
Permeability And Strength Of Artificially Controlled Porous Media, Suresh Pasumarty
Graduate Theses, Dissertations, and Problem Reports
Oil well industry has been using hydraulic fracturing to open new channels and thus increase well productivity. Materials known as Proppants are injected into the fracture to keep the channels conductive after the applied hydraulic pressure is removed. But the proppants used to date are often crushed under the influence of rock closures, which leads to clogging of the channel.;The main objective of this study was to model a material that would be able to withstand the rock closure stresses and also remain conductive. A three-dimensional finite element model was developed to study the effects of the shape and the …
Application Of Statistical Methods For "Flow Unit" Identification And Characterization Of A Reservoir Using Well Log And Core Data, Reza Mustafa
Graduate Theses, Dissertations, and Problem Reports
A flow unit is a stratigraphically continuous interval of similar reservoir process speed that maintains the geologic framework and characteristics of rock types. Permeability and porosity of the reservoir rock has always been considered as two of the most important parameters to identify flow unit for formation evaluation, reservoir description, and characterization. Beyond evaluating permeability and porosity, one can also use combinations of two or more rock properties to gain insight into the character of two through porous media. Porosity is commonly evaluated from the well log data, which are usually available from the most wells in the reservoir. But …
Using Waterflood Performance To Characterize Flow-Units In A Heterogeneous Reservoir, Vamsi Krishna Alla
Using Waterflood Performance To Characterize Flow-Units In A Heterogeneous Reservoir, Vamsi Krishna Alla
Graduate Theses, Dissertations, and Problem Reports
Simulation of waterflood performance is used to verify the characterization of flow-units in a heterogeneous reservoir. BOAST98 software was used for simulation of waterflood performance. Two adjacent five spot patterns in the Stringtown field in West Virginia were selected to be evaluated in this study.;The predicted permeability along with the porosity from Artificial Neural Network (A.N.N) was used for primary characterization purpose and identification of flow-units in the two five spots patterns.;Two alternate simulation models were developed. The simulation model was developed using the available data and those predicted using A.N.N. to verify that the flow-units model was an accurate …
Flow Unit Prediction With Limited Permeability Data Using Artificial Neural Network Analysis, Benjamin Hale Thomas
Flow Unit Prediction With Limited Permeability Data Using Artificial Neural Network Analysis, Benjamin Hale Thomas
Graduate Theses, Dissertations, and Problem Reports
The Appalachian Basin has numerous abandoned or marginally producing oilfields having significant recoverable oil remaining in place. Typically production records and reservoir data is not available. Presented is a new methodology, applicable to any field having limited records, designed for reservoir characterization via flow unit identification.;This methodology utilizes limited core permeability data from a few wells as a key to predicting flow units within a field when only log-based data is available. Primary software tools used include NeuroShell 2, an artificial neural network (ANN) program, and the Boast98 numerical simulator.;Various techniques for flow unit identification including graphic approaches using the …
Toward High-Definition Reservoir Characterization, Gheorghe Luca
Toward High-Definition Reservoir Characterization, Gheorghe Luca
Graduate Theses, Dissertations, and Problem Reports
A new methodology for high resolution reservoir characterization is proposed. It combined the advantages of the surface seismic (low resolution, large coverage) and crosswell seismic (improved resolution, small coverage).;The process involves deconvolution of a low resolution signal (surface seismic traces) into a high resolution crosswell seismic trace. The problem has multiple solutions and an analytical solution is hard or difficult to be developed.;This project proved that it is possible to predict high-resolution crosswell seismic traces using low-definition surface seismic traces. The statistical comparison between the real and the synthetic crosswell seismic traces gives confidence that future work in this area …
Kinematic Synthesis Of A Well Service Machine, Prashanth Kaparthi
Kinematic Synthesis Of A Well Service Machine, Prashanth Kaparthi
Graduate Theses, Dissertations, and Problem Reports
Blowout preventers are used in the oil well industry to prevent accidental oil fires, and guide valves are assembled atop the preventers. The current solution is to use cranes, as this is time-consuming and expensive, a solution using an appropriate four-bar mechanism for this purpose was contemplated, using Burmester theory and the four-position synthesis method.;The angles and distance of the four positions were calculated and the data obtained was specified as input for the synthesis of the four-bar mechanism using four-position synthesis programmed in MATLAB(TM). The moving pivots (k) and the ground pivots (m) were obtained from the program and …
Effect Of Pretreatment On The Performance Of Metal Contaminated Commercial Fcc Catalyst, Oguz Bayraktar
Effect Of Pretreatment On The Performance Of Metal Contaminated Commercial Fcc Catalyst, Oguz Bayraktar
Graduate Theses, Dissertations, and Problem Reports
The performance of fluid catalytic cracking (FCC) catalyst decreases due to the severe negative effects of metal contaminants (e.g., nickel, vanadium and iron) deposited on the catalyst from the hydrocarbon feed. The metal contaminants cause an increase in the production of gas and coke at the expense of gasoline.;In this work the effect of pretreatment with hydrogen and methane gases on the performance of commercial, metal-contaminated, FCC equilibrium catalysts was investigated. Cracking reactions of both sour imported heavy gas oil (SIHGO) and n-hexadecane were carried out in a microactivity test (MAT) unit using three commercial equilibrium catalysts with different metals …
Direct Liquefaction Of Coal With Coal-Derived Solvents To Produce Precursors For Carbon Products, David Christopher Fenton
Direct Liquefaction Of Coal With Coal-Derived Solvents To Produce Precursors For Carbon Products, David Christopher Fenton
Graduate Theses, Dissertations, and Problem Reports
Direct liquefaction (hydrogenation) of coal has frequently been pursued as one avenue for the production of value added products from coal. The focus of this research was to evaluate five coal-derived liquids as substitutes for tetralin in the coal hydrogenation process. A mid-distillate by-product liquid from the production of high quality char was obtained from Antaeus Technical Services, Inc. and split into three fractions, the original liquid (RACL), its heavy fraction (DACL-H), and its light fraction (DACL-L). The other two liquids were heavy creosote oil (HCO) and carbon black base #1 (CBB) from Koppers Industries, Inc. These liquids were used …
Improving The Simulation Of A Waterflooding Recovery Process Using Artificial Neural Networks, Edison Gil
Improving The Simulation Of A Waterflooding Recovery Process Using Artificial Neural Networks, Edison Gil
Graduate Theses, Dissertations, and Problem Reports
The waterflood performance of the dual five-spot pilot project in the Stringtown oil field, situated in West Virginia, has been studied. A numerical simulator, called BOAST98, was used for the simulation purposes, after developing a reservoir description.;The producing horizon in the field is the Upper Devonian Gordon sandstone, which is characterized by severe heterogeneity due to the depositional environment. Using available core and log data and geological analysis, a reservoir characterization study was done. A preliminary reservoir description based on log porosity-core permeability correlation was improved by developing Artificial Neural Networks (A.N.N.), which incorporates geophysical well log information. These A.N.N.'s …
Restimulation Candidate Selection Using Virtual Intelligence, Khalid Y. Mohamad
Restimulation Candidate Selection Using Virtual Intelligence, Khalid Y. Mohamad
Graduate Theses, Dissertations, and Problem Reports
Due to the importance of well deliverability maintenance, a committee of specialists from Dominion East Ohio and other service companies meets every year to select the wells to be included in the deliverability maintenance plan. The application tool not only help in selecting the wells for deliverability maintenance plan but goes beyond that by designing the most optimum frac recipe.;The purpose of this study is to develop an engineering tool that will help petroleum engineers making a better decision for selecting well candidate and design well restimulation. The project focuses on a gas storage field and use data such as …
Predicting A Detailed Permeability Profile From Minipermeameter Measurements And Well Log Data, Shawn D. Nines
Predicting A Detailed Permeability Profile From Minipermeameter Measurements And Well Log Data, Shawn D. Nines
Graduate Theses, Dissertations, and Problem Reports
Permeability, along with the porosity, comprises one of the two most important properties in petroleum engineering with respect producing hydrocarbon fluids.;It is standard practice in the petroleum industry to determine permeability in one of two ways. These are pressure transient testing and core analysis. Both methods are expensive in their own ways. This research focuses on a way to minimize or limit the need for both of these testing procedures.;The purpose of this research was to utilize well log data, mainly gamma ray and density, Minipermeameter values, and basic information such as depth and spatial coordinates to predict permeability in …
Porosity Distribution Prediction Using Artificial Neural Networks, Fahad Abdullah Al-Qahtani
Porosity Distribution Prediction Using Artificial Neural Networks, Fahad Abdullah Al-Qahtani
Graduate Theses, Dissertations, and Problem Reports
Reservoir characterization plays a very important role in the petroleum industry, especially to the economic success of the reservoir development. Heterogeneity can complicate the evaluation of reservoir properties. Porosity is the primary key to a reliable reservoir model.;Several studies in the literature indicated that accurate evaluation of reservoir properties can be made by the analysis of electric logs. Stringtown oil field in Tyler and Wetzel counties in the northwestern part of West Virginia was selected to conduct this study.;Artificial Neural Networks (ANN) is one of the latest technologies available to the petroleum industry. The objective of this study was to …
Predicting Permeability And Flow Capacity Distribution With Back-Propagation Artificial Neural Networks, Alexis Jose Riera
Predicting Permeability And Flow Capacity Distribution With Back-Propagation Artificial Neural Networks, Alexis Jose Riera
Graduate Theses, Dissertations, and Problem Reports
The prediction of permeability is a critical, key step for reservoir modeling and management of oil recovery operations. Previous studies have successfully demonstrated that the new technology called Artificial Neural Network (ANN), a biologically inspired, massive parallel, distributed information processing system, is an excellent tool for permeability predictions using well log data. This technology overcomes the drawbacks caused by the inherent heterogeneity of the reservoir and lack of sufficient cores or pressure transient tests, allowing to define reservoir characterization within an acceptable accuracy while maintaining costs low. The methodology used in this study takes advantage of this technology to accomplish …
Gas Production Forecasting Using Automatic Type Curve Matching, Walter Jonathan Diazgranados
Gas Production Forecasting Using Automatic Type Curve Matching, Walter Jonathan Diazgranados
Graduate Theses, Dissertations, and Problem Reports
As the demand for natural gas has increased in the last years, also the need for forecast reliable gas recoveries. Gas type curves are one of the methods utilized to estimate future well performance. The purpose of this study is the utilization of the Aminian et al type curves to model gas well performance. Unlike other studies developed in the past, Aminian et al type curves account for important factors ignored in the derivation of the proposed theoretical solutions. Thus, the pressure dependency of gas viscosity and compressibility, as well as the pressure loss owing to non-Darcy flow, make of …
Designing Neural Networks For The Prediction Of The Drilling Parameters For Kuwait Oil And Gas Fields, Abdulrahman F. Al-Rashidi
Designing Neural Networks For The Prediction Of The Drilling Parameters For Kuwait Oil And Gas Fields, Abdulrahman F. Al-Rashidi
Graduate Theses, Dissertations, and Problem Reports
In this study a new methodology was developed to predict the drilling parameters using the Artificial Neural Network. Three models were developed to predict bit type, rate of penetration (ROP), and cost-per-foot (cost/ft), respectively.;The prediction of bit type and other drilling parameters from the current available data is an important criterion in selecting the most cost efficient bit. History of bit runs plays an important factor in bit selection and bit design. Based on field data, the selection of bit type can be accomplished by the use of a neural network as an alternative bit selection method.;Three drilling parameters were …
Automatic Type Curve Matching For Predicting Gas Wells Production, Samson Tesfaslasie
Automatic Type Curve Matching For Predicting Gas Wells Production, Samson Tesfaslasie
Graduate Theses, Dissertations, and Problem Reports
The determination of gas wells production using type curve matching is one of the methods used in evaluating gas reservoirs. Matching curves manually is time consuming and exposed to human error. Aminian type curves unlike the other type curves accounts the pressure dependency of gas properties and the effect of non-darcy factor. The sensitivity of Aminian type curves to non-darcy factor makes them hard to match with naked eyes.;Sfrac is a computer program generates type curves using conventional calculations for wells where all the reservoir properties are available. Using the idea of Sfrac, a program was developed to generate type …