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A Parametric Study And Economic Evaluation Of Drilling Patterns In Deep, Thick Cbm Reservoirs, Ali Omran Ali Nasar
A Parametric Study And Economic Evaluation Of Drilling Patterns In Deep, Thick Cbm Reservoirs, Ali Omran Ali Nasar
Graduate Theses, Dissertations, and Problem Reports
Over the past decade, the production from unconventional reservoirs such as coalbed methane has increased dramatically. The focal driving force for this growth in coalbed methane production was the development and promulgation of reservoir engineering and completion technology.;There have been many studies performed on the well configuration and production optimization techniques in the coal seams. According to many of these studies horizontal, deviated and multi-lateral wells are of more benefits compared to the vertical wells. However, the targets of these studies have mostly been the thin coal seams while this result might not hold for the thick CBM reservoirs. The …
Alternative Modeling Of Multiply Hydraulic Fractures In Horizontal Wells Completed In Low Permeability Formation, Mahmod S. Alkalawi
Alternative Modeling Of Multiply Hydraulic Fractures In Horizontal Wells Completed In Low Permeability Formation, Mahmod S. Alkalawi
Graduate Theses, Dissertations, and Problem Reports
Many conventional gas reservoirs around the world have been developed and well-understood on contrary to unconventional gas reservoirs where the amount of information available to the public considered still not abundant. The unconventional reservoirs (tight formation) where permeability ranges from 0.001millidarciesto micro-Darcy permeability is a relatively new area in some parts of the world and the details involving ways to increase productivity of wells and best fracture design yet has to be investigated .The unconventional gas reservoirs are important in the world due to its availability, future energy demand around the world, and most conventional gas reservoirs have already been …
Experimental Analysis Of The Post-Failure Behavior Of Coal And Rock Under Laboratory Compression Tests, Dachao Neil Nie
Experimental Analysis Of The Post-Failure Behavior Of Coal And Rock Under Laboratory Compression Tests, Dachao Neil Nie
Graduate Theses, Dissertations, and Problem Reports
A major aspect of coal mine design is the structural stability of the mine. For establishing structural stability, the strength of the strata is determined by recovering the cores. The strength is determined through various methods and one method in particular is the Uniaxial Compressive Strength of the rock, which is commonly adopted as the standard strength indicator. However, in-situ behavior by past researchers have shown that rock and coal show significant residual strength contrary to the failure path observed in a conventional compression tests. Researchers in past had used stiff system for generating the post failure behavior of the …
Modeling Studies To Evaluate Performance Of The Horizontal Wells Completed In Shale, Abbas Belyadi
Modeling Studies To Evaluate Performance Of The Horizontal Wells Completed In Shale, Abbas Belyadi
Graduate Theses, Dissertations, and Problem Reports
The results of the modeling studies to determine the production performance of multiple fractured horizontal wells completed in shale formation has been summarized in this dissertation. A commercial reservoir simulator was utilized to model both single and dual porosity reservoir (with and without adsorption) with multiple layers. The impact of reservoir characteristics including natural fractures and hydraulic fractures properties on the production performance were investigated. In addition, the results were utilized to investigate the flow regimes for horizontal wells with one or multiple hydraulic fractures.;Flow regime identification in low permeability reservoirs is extremely critical to evaluate performance of the horizontal …
The Impact Of Relative Permeability On Horizontal Well Type Curve Analysis In Coalbed Methane Reservoirs, Kyle Remington Clark
The Impact Of Relative Permeability On Horizontal Well Type Curve Analysis In Coalbed Methane Reservoirs, Kyle Remington Clark
Graduate Theses, Dissertations, and Problem Reports
Coalbed methane (CBM) production has become increasingly profitable in recent years. Production prediction and analysis is challenging in these reservoirs due to two-phase flow conditions. A CBM reservoir is classified as an unconventional gas reservoir due to its unique flow and storage characteristics. Software simulators are by far the best way to predict production performance in CBM reservoirs.;This study investigated the impact of relative permeability on production type curves of horizontal wells in CBM reservoirs. Both relative permeability to gas and water were analyzed using numerical models. The simulation model used for this study is Eclipse Office due to its …
Impact Of Formation Properties And Well Design On Cumulative Gas Production From Devonian Shale, Jacques Ita
Impact Of Formation Properties And Well Design On Cumulative Gas Production From Devonian Shale, Jacques Ita
Graduate Theses, Dissertations, and Problem Reports
Devonian Shale refers to all the shale strata sandwiched between two different formations; the younger Berea sandstone above it and the older limestone termed Onondaga or Coniferous below it. Devonian Shale consists of exceptionally rich source rocks; were it not for their low porosity and permeability, the shales would represent one of the greatest oil and gas producing provinces of the world. It is estimated that up to 90 TCF of natural gas could be recovered from Devonian Shale. However, production potential of Devonian Shale is difficult and expensive to determine with production being variable because shale is a very …
Pressure Behavior Of Horizontal Wells With Multiple Hydraulic Fractures Completed In Shale, Corinne Melissa Akoun
Pressure Behavior Of Horizontal Wells With Multiple Hydraulic Fractures Completed In Shale, Corinne Melissa Akoun
Graduate Theses, Dissertations, and Problem Reports
The purpose of this study was to investigate and identify the pressure behavior of a horizontal well with multiple hydraulic fractures completed in an ultra-low permeability formation. These formations are also referred to as unconventional gas reservoirs. Unconventional gas reservoirs such as shales and tight gas sands have extremely low permeability that requires massive simulation treatments in order to produce at an economic flow rate. Horizontal drilling and hydraulic fracturing are proven technologies for achieving economic production from unconventional gas reservoirs. A dual porosity reservoir model was employed in this research study to simulate the pressure behavior of horizontal well …
Impact Of Hydraulic Fractures On Type Curves For Horizontal Wells In Cbm Reservoirs, David Christopher Bell
Impact Of Hydraulic Fractures On Type Curves For Horizontal Wells In Cbm Reservoirs, David Christopher Bell
Graduate Theses, Dissertations, and Problem Reports
As production technologies continue to increase, more and more unconventional natural gas plays are becoming economical and attractive to produce. CBM, or coalbed methane, currently accounts for approximately ten percent of all natural gas production in the U.S., and that number is increasing. Therefore, it is critical to understand what makes a reservoir a viable option for production development.;Many current tools used to predict the performance of a reservoir rely heavily on unknowns about the formation, and are therefore risky and complex. Numerical methods and computer simulations can greatly aid in the evaluation, but still remain an incomplete description of …
Production Analysis Of Marcellus Shale, Hossein Belyadi
Production Analysis Of Marcellus Shale, Hossein Belyadi
Graduate Theses, Dissertations, and Problem Reports
The purpose of this thesis was to analyze the production potential of Marcellus shale using actual field data. By using real field production data for 9 vertical and 3 horizontal wells it was possible to predict and understand the cause and effect relationship between the specific reservoir parameters and the overall production outlook of the reservoir in the long run. Using an assumed base model and narrowing each parameter down to match historically to the actual field data the forecast of the reservoir behavior was attained. The main model relied upon in this thesis was the Dual Porosity Model, which …
Analysis Of Pressure Data From The Horizontal Wells With Multiple Hydraulic Fractures In Shale Gas, Essa M. Tabar
Analysis Of Pressure Data From The Horizontal Wells With Multiple Hydraulic Fractures In Shale Gas, Essa M. Tabar
Graduate Theses, Dissertations, and Problem Reports
In the last several years, the unconventional gas reservoirs development has grown tremendously. Most of these unconventional reservoirs have very low permeability and are not able to produce an economic flow rate without stimulation treatments. The common method to improve the production is by a horizontal well with multiple hydraulic fractures. Hydraulic fracturing is a stimulation practice to improve the permeability in order to obtain commercial production. Horizontal wells with multiple hydraulic fracture treatments have proven to be an effective method for development of unconventional reservoirs.;The objective of this study is to investigate the interpretation of pressure transient responses from …
Addition Of Zeolite Zsm-5 To An Iron-Based Fischer-Tropsch Catalyst Supported On Activated Carbon: Effect Of Reactor Conditions, Avinashkumar V. Karre
Addition Of Zeolite Zsm-5 To An Iron-Based Fischer-Tropsch Catalyst Supported On Activated Carbon: Effect Of Reactor Conditions, Avinashkumar V. Karre
Graduate Theses, Dissertations, and Problem Reports
An iron-based catalyst containing 6 wt% Mo, 16 wt% Fe, 0.8 wt% Cu, and 0.9 wt% K supported on Norit SX Ultra activated carbon is used as a FTS catalyst. Zeolite ZSM-5 (of medium acidity and Si/Al = 50) is used to check its effect on FT base catalyst to form aromatic compounds and to reduce the size of long-chain hydrocarbons. The influence of ZSM-5 amounts, bed arrangements, and the temperature on the product distribution were investigated.;The performance of ZSM-5 along with the base catalyst was analyzed in two catalyst bed configurations: separate-bed and mixed-bed. Both separate-bed and mixed-bed catalyst …
Prediction Of The Effects Of Compositional Mixing In A Reservoir On Conversion To Natural Gas Storage, Alan Wallace Brannon
Prediction Of The Effects Of Compositional Mixing In A Reservoir On Conversion To Natural Gas Storage, Alan Wallace Brannon
Graduate Theses, Dissertations, and Problem Reports
Most existing gas storage fields have been developed from depleted natural gas and oil production reservoirs. It is not uncommon for gas storage fields to be developed in water bearing aquifer zones where the presence of conventional type reservoirs is limited. Natural Gas Condensate reservoirs are typically not found in the eastern United States where most gas storage facilities are developed close to the colder market and increased population centers. Therefore, data is limited on how the lean dry storage gas will interact with the remaining residual gas condensate liquid and wet gas at reservoir pressure and temperature conditions.;Data concerning …
A Study Of Additives For Aquagel/Bentonite Based Drilling Fluids In Relation To Filtration And Rheological Properties, Smectite Inhibition And Their Application To Marcellus Shale, Ike Eleanya O. Onuoha
A Study Of Additives For Aquagel/Bentonite Based Drilling Fluids In Relation To Filtration And Rheological Properties, Smectite Inhibition And Their Application To Marcellus Shale, Ike Eleanya O. Onuoha
Graduate Theses, Dissertations, and Problem Reports
Since the dawn of rotary drilling, engineers and scholars have persevered, through study and research, to formulate an optimum inhibitive drilling fluid for the shale formations. Although fluids with acceptable performance in shale have been formulated, one only needs to examine the word "acceptable" in the context above to realize that the industry has ongoing activities to formulate an optimum inhibitive fluid for the Marcellus Shale. In accordance, this research seeks to fabricate a means of reducing formation damage (permeability reduction), stuck pipe incidences, heaving, sloughing and caving which are all due to the swelling of Smectite clay and shale. …
Optimization Of Operating Parameters For Minimum Mechanical Specific Energy In Drilling, Todd Robert Hamrick
Optimization Of Operating Parameters For Minimum Mechanical Specific Energy In Drilling, Todd Robert Hamrick
Graduate Theses, Dissertations, and Problem Reports
Efficiency in drilling is measured by Mechanical Specific Energy (MSE). MSE is the measure of the amount of energy input required to remove a unit volume of rock, expressed in units of energy input divided by volume removed. It can be expressed mathematically in terms of controllable parameters; Weight on Bit, Torque, Rate of Penetration, and RPM. It is well documented that minimizing MSE by optimizing controllable factors results in maximum Rate of Penetration. Current methods for computing MSE make it possible to minimize MSE in the field only through a trial-and-error process. This work makes it possible to compute …
Interpretation Of Well Test Data From Two Hydraulically Communicating Reservoirs, Bander Ibrahim Al Quaimi
Interpretation Of Well Test Data From Two Hydraulically Communicating Reservoirs, Bander Ibrahim Al Quaimi
Graduate Theses, Dissertations, and Problem Reports
Naturally fractured reservoirs (NFR) have been receiving more attention than ever since the beginning of the last decade due to various reasons. The current understanding is not sufficient to achieve a favorable recovery factor due to the complexity associated with the fracture characterization and the dynamic behavior of the fractured system. The majority of the fractured reservoirs are developed. Therefore, before proceeding into secondary or possibly tertiary recovery processes a thorough understanding must be reached to avoid undesirable results. The huge reserve volume present in fractured oil and gas reservoirs motivate engineers, researchers, and geoscientists to exert additional efforts to …
Development Of Type Curves For Gas Production From Hydraulically Fractured Horizontal Wells In Unconventional Reservoirs, Faisal N. Alenezi
Development Of Type Curves For Gas Production From Hydraulically Fractured Horizontal Wells In Unconventional Reservoirs, Faisal N. Alenezi
Graduate Theses, Dissertations, and Problem Reports
Unconventional gas reservoirs represent a long-term global source of natural gas. Hydraulic fracturing combined with horizontal drilling has turned unproductive unconventional gas reservoirs into the largest natural gas fields in the world. At the early time of production, due to lack of needed variables, using numerical models is challenging, time consuming, and expensive. Production type curves are a dependable tool for predicting the performance of gas reservoirs.;The goal of this research was to develop a simple and reliable tool to predict the performance of the production of hydraulically fractured horizontal wells in unconventional gas reservoirs. A set of production type …
Impact Of Gas Desorption On Production From Multiply Fractured Horizontal Well In Shale, Abdallah O. Arwishad
Impact Of Gas Desorption On Production From Multiply Fractured Horizontal Well In Shale, Abdallah O. Arwishad
Graduate Theses, Dissertations, and Problem Reports
In recent years, the exploitation of unconventional gas reservoirs has become increasingly important to North American energy supply. Unconventional gas development depends on effective stimulation of low permeability reservoir by creating multiple hydraulic fractures which connects massive reservoir area to the wellbore. Hydraulic fracturing and horizontal drilling are primary techniques to obtain economical production from the shale gas reservoir. In addition to that, gas desorption can be a significant source of gas production in shale gas reservoirs.;This research will illustrate the impact of gas desorption on production from multiply fractured horizontal well in shale by using a reservoir model. This …
Intelligent Reservoir Modeling Of Lower Huron Shale, Ognjen Grujic
Intelligent Reservoir Modeling Of Lower Huron Shale, Ognjen Grujic
Graduate Theses, Dissertations, and Problem Reports
The work presented in this thesis is an intelligent reservoir modeling and analysis of Lower Huron Shale in eastern Kentucky. Methodology used for this analysis is a recently developed Top Down Intelligent Reservoir Modeling, that couples artificial intelligence and data mining techniques with conventional reservoir engineering methods. A total of 77 wells completed in Lower Huron Shale in eastern Kentucky were used in this study. Well production data was obtained from the company operating the wells, while completion reports and well logs were downloaded from publicly available database at Kentucky Geological Surveys website. The downloaded well logs were digitized, and …