Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 59 for “"Gas wells"”.
-
Conversion of oil and gas wells to geothermal reinjection
Number of old, disused and abandoned oil wells around the globe is counted in millions. If just a small fraction could be converted for geothermal utilization, it could significantly reduce costs and environmental impact compared to making new wells from scratch. The focus of this project is …
-
Automatic type curve matching for predicting gas wells production
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 …
-
Economic analysis of shale gas wells in the United States
Natural gas produced from shale formations has increased dramatically in the past decade and has altered the oil and gas industry greatly. The use of horizontal drilling and hydraulic fracturing has enabled the production of a natural gas resource that was previously unrecoverable. Estimates of the …
-
Transient multiphase flow simulation for unloading of frac hit gas wells
… multiphase flow simulation valid for unloading gas wells using nitrogen. It studies the behavior of nitrogen for unloading horizontal gas wells with gas injection in the annulus. The work investigates unloading non-Newtonian fluids such as those which invade offset wells when a frac hit occurs …
-
Reducing critical gas flow rate for lifting liquid from gas wells
Includes bibliographical references (pages 62-63).
-
Quantitative risk assessment in drill casing design for oil and gas wells
In the oil and gas industry the use of a reliability based design is becoming increasingly important because of the increasingly requirements for safety and economy. In contrast to the traditional working stress design (WSD), Quantitative Risk Assessment (QRA) provides the methodology for …
-
Decision matrix for liquid loading in gas wells for cost/benefit analyses of lifting options
… solutions already exist to reduce the loss of gas production when liquid loading begins to occur. However, the choice of remedial technique, its feasibility, and its cost, vary considerably depending on a field's location, size export route, and the individual operator's experience. The …
-
Implications of geothermal energy production via geopressured gas wells in Texas : merging conceptual understanding of hydrocarbon production and geothermal systems
… potential application to retrofitted abandoned wells. By avoiding plugging and abandonment procedures, production companies are saved from a cost with no potential payback while saving the geothermal industry exploration and drilling costs, which commonly make up over half of an overall project …
-
Mechanisms and control of water inflow to wells in gas reservoirs with bottom water drive
Water inflow may cease production of gas wells, leaving a significant amount of gas in the reservoir. Conventional technologies of gas well dewatering remove water from inside the wellbore without controlling water at its source. This study addresses mechanisms of water inflow to gas wells and a …
-
Gas production forecasting using automatic type curve matching
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 …
-
Subsurface Analysis of Mississippian Tripolitic Chert in Northwest Arkansas
… for access to outcrops in close proximity to gas wells that encounter subsurface Mississippian strata. Many outcrops found in Northwest Arkansas expose Lower Mississippian (Kinderhookian-Osagean) strata that represent a full third order transgressive/regressive sequence that is unconformity …
-
Modeling of Multiphase Flow in the Near-Wellbore Region of the Reservoir under Transient Conditions
In oil and gas field operations, the dynamic interactions between reservoir and wellbore cannot be ignored, especially during transient flow in the near-wellbore region. As gas hydrocarbons are produced from underground reservoirs to the surface, liquids can come from condensate dropout, water …
-
Characterisation and simulation of bidirectional multiphase flow in tubes
… of slug to churn, especially in producing gas wells. To understand the bidirectional flow reversal phenomena of co-current to counter-current annular flow with a falling liquid film inside a vertical tube with internal diameter of 0.054 m, height of 10.5m length, and length of 40m …
-
Effect of viscosity-compressibility product variation on the analysis of fractured well performances in tight unconventional reservoirs
… product on the analysis of fractured, tight-gas well performances. Pressure drops required to economically produce fractured, tight-gas wells may be in the thousands of psi. Under these conditions, the gas compressibility-viscosity product may exhibit variations 3 to 10 times greater than the …
-
Development, model validation, and preliminary experimental verification of an FEA program for structural analysis of casing in casing for oil wells.
Oil and gas wells rely upon long steel pipes, known as casing, that run down the depth of the well. During drilling, a section of pipe is cemented in place and another section of casing is run inside, repeating this process as necessary. This process is not 100% accurate, leading to eccentric …
-
Fracking freedom: A comparitive analysis of gas drilling in Hurst, Texas
… thesis is to educate people about the natural gas drilling industry and the process used to harvest natural gas, hydro-fracturing, also known as fracking. Many natural gas drilling sites are being sited in close proximity to homes, schools, and agriculture, sometimes within 300-1500 feet. This …
-
Advocacy Networks in the Marcellus Shale Area: A Study of Environmental Organizations in Northeastern and Southwestern Pennsylvania
… show that the counties with a higher number of gas wells do not necessarily have a higher level of environmental advocacy and that a lack of resources is a common barrier to this type of work. Organizations are better connected locally within the northeast. Counties which need to bolster their …
-
Development, model validation, and preliminary experimental verification of an FEA program for structural analysis of casing in casing for oil wells.
Oil and gas wells rely upon long steel pipes, known as casing, that run down the depth of the well. During drilling, a section of pipe is cemented in place and another section of casing is run inside, repeating this process as necessary. This process is not 100% accurate, leading to eccentric …
-
Restoration of the endangered Cumberland elktoe (Alasmidonta atropurpurea) and Cumberland bean (Villosa trabalis) (Bivalvia: Unionidae) in the Big South Fork National River and Recreation Area, Tennessee and Kentucky
… affect mussels, including coal mines, oil and gas wells, transportation corridors, agriculture and urban development. Sites were also evaluated on their current conservation value to designate which sites are most important to long-term maintenance of mussel fauna. Several sites were identified …
Page 1 of 3