Blar i Institutt for geovitenskap og petroleum på emneord "Petroleumsfag, Boreteknologi"
Viser treff 41-60 av 72
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Experimental Testing of Initial Hook Load During Tripping in Horizontal Well
(Master thesis, 2015)One of the major problems in drilling operations occur during tripping out of the well. Inside the well there are often restrictions making it difficult or impossible to pull out the drill string including its bottom hole ... -
Formation of a shale barrier using numerical and analytical methods
(Master thesis, 2016)The petroleum industry is looking for less expensive solutions regarding Plug & Abandonment. Earlier studies have shown incidents that shale formation around a well sometimes deforms and establishes sufficient seal around ... -
Fracture Treatment Simulations Using a Modified Discrete Element Model (MDEM)
(Master thesis, 2016)Hydraulic fracturing is a widely used well-stimulation technique and one of the primary engineering tools for enhanced well productivity. To improve the understanding of how untouched rock mass reacts to stimulation, SINTEF ... -
HeaveLock - Enabling MPD On Floating Drilling Vessels
(Master thesis, 2016)During drilling operations from floating drilling vessels, it is often experienced challenges related to heave motions when the rig s heave compensating system is deactivated. Rig heave movements cause the bottom hole ... -
Hydraulic Fracturing for Enhanced Geothermal Systems
(Master thesis, 2015)Finding new energy sources to provide base load electricity supply on a global scale is of increasing importance. Enhanced Geothermal Systems (EGS) has been identified as capable of playing an important role in the future ... -
Improved Burst Model for Casing and Tubing Design
(Master thesis, 2018)Casing and tubing design for burst are performed by requiring a safety margin against yield under internal overpressure. Today's design process uses design limit plots, consisting of Barlow's and the approximate von Mises ... -
Improved Casing Collapse Prediction with a Case Study of Asset Life Extension
(Master thesis, 2017)The current industry accepted standards of predicting collapse strength of casings are pessimistic and inaccurate. With wells being drilled ever deeper, high strength pipes are required in order to comply with rules and ... -
Index Tests and Their Applications - Determining Rock Strength and Strength-anisotropy as a Function of Inclination by use of Index Testing and Mathematical Modelling
(Master thesis, 2015)Drilling problems in shale continue to be an expensive problem in the petroleum industry due to lack of information concerning rock mechanical parameters. Conventional laboratory tests are expensive and time consuming, as ... -
The Influence of Elastic Anisotropy on Borehole Stability
(Master thesis, 2016)This thesis investigates the effect of elastic anisotropy on borehole stability, with the purpose of determining how significant this effect is. How this anisotropy affects borehole stresses and borehole failure through ... -
Investigation of Creep Characteristics for Stresses close to Failure - Experiments and Anaysis
(Master thesis, 2015)This study consists of a series of experiments set up to investigate the active processes in creep, with emphasizes on unloading and recovery of strain. The experiments were performed on dry 1x2 inch cylindrical core samples ... -
Laboratory Testing to Study Initiation and Evolution of Shale Barriers
(Master thesis, 2016)Clay and shale formations occur naturally with sealing properties, and are therefore investigated as possible annular barriers. The properties of these argillaceous rocks are not fully understood with regards to creep of ... -
Managed Pressure Cementing - Simulations of Pressure and Flow Dynamics During Cementing Using Applied Back-Pressure and Dual Gradient
(Master thesis, 2017)Cement operations in narrow pressure windows can be challenging, due to the increased hydrostatic pressure caused by heavy-weight cement. Through managed pressure control, downhole pressure fluctuations can be controlled, ... -
Model for evaluating drilling efficiency based on the concept of Mechanical Specific Energy
(Master thesis, 2016)Systems to increase efficiency during drilling is desirable in order to have more costeffective well operations. This master s thesis studies the possibility to present new information real-time regarding the actual drilling ... -
Model for Prediction of Cement Sheath Failure
(Master thesis, 2016)In casing design, the casing is required to withstand all loads it is exposed to during the well life. These loads are normally modeled in an industry leading software (ILS), which determines whether the casing can withstand ... -
Modell for casing design
(Master thesis, 2015)Foringsrørdesign er utført for å evaluere alle mulige hendelser en brønn kan bli utsatt for. Foringsrørene må tåle lastene, temperaturene og slitasjen den kan bli utsatt for i løpet av brønnens levetid. For å godkjenne et ... -
Operational Procedure for permanent P&A of Subsea Wells
(Master thesis, 2015)All oil-and gas wells ever drilled on the Norwegian continental Shelf will be abandoned at some point. The operating companies are entitled ensure no leaking to the surface from the reservoir in an eternal perspective ... -
Optimized Well Design on Brage
(Master thesis, 2015)Slot recovery operations have the intention to increase the oil recovery and extend the lifetime of maturing fields. Keeping the well cost low is an important aspect of such operations, as the recoverable resources are ... -
Prediction of Failures While Drilling
(Master thesis, 2016)Complex drilling operations, high production expenses and a low oil price influence the modern petroleum industry. Reducing the non-productive-time (NPT) during an operation can reduce the production expenses. Drilling, ... -
Prediction of Surge and Swab from Field Data Compared with Existing Theory - Analysis of Two Wells in the North Sea
(Master thesis, 2016)Existing theory of surge and swab are compared with field data. The purpose of this master thesis is to examine whether or not existing methods can be used for calculations of surge and swab pressure. Field data from two ... -
Relief Well Killing In Shallow Reservoirs
(Master thesis, 2015)After the "Wisting"-discovery was made in the Barents sea, operators are likely to be more aware of the potential in shallower formations when planning exploration wells. With the possible development of more shallow ...