Browsing Institutt for geovitenskap og petroleum by Title
Now showing items 2602-2621 of 2643
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Water Alternating Gas in Stratified Reservoirs - A Sensitivity Study of WAG Parameters
(Master thesis, 2015)Water alternating gas (WAG) injection is an EOR method where water and gas is injected in cycles. The process exploits the microscopic displacement advantages of gas while using subsequent water slugs for mobility control. ... -
WATER CONING IN FRACTURED RESERVOIRS: A SIMULATION STUDY
(Master thesis, 2012)Water coning is a complex phenomenon that depends on a large number of variables which include among others: production rate, perforation interval, mobility ratio, capillary pressure, etc. Its production can greatly affect ... -
Water flooding of sandstone oil reservoirs: Underlying mechanisms in imbibition vs. drainage displacement
(Peer reviewed; Journal article, 2022)In this work the effect of wettability in waterfloods of viscous oil is investigated in a combination of experiments in sandpacks and microfluidic chips. Thirty-nine sand-pack flooding experiments were conducted to investigate ... -
Water in shale: Molecular modeling and Rock Physics Experiments
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:61, Doctoral thesis, 2013) -
Water loss in unlined pressure tunnels - A review of the extent, causes and consequences for selected cases
(Master thesis, 2019)Unlined pressure tunnel is a cost-saving method that is mostly used in designing a hydropower plant, although the application requires favorable ground condition. Initial assessment in pressure tunnel design often uses ... -
Water separation from wellstream in inclined separation tube with distributed tapping
(Doktoravhandlinger ved NTNU, 1503-8181; 2011:222, Doctoral thesis, 2011)Water separation in an upward, inclined separation tube, with distributed tapping points has been studied, verified and modeled in this thesis. Phase segregation in an upward inclined pipe is widely occurring in oil and ... -
Waterflooding Optimization for Improved Reservoir Management
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:56, Doctoral thesis, 2012) -
Waterproof sprayed concrete with improved sustainability performance
(Chapter, 2023)Sprayed concrete in combination with rock bolts has successfully been used for permanent rock support in tunnels for decades. The main shortcoming is that sprayed concrete alone is unable to function as permanent waterproofing ... -
Wavefield reconstruction for velocity–stress elastodynamic full-waveform inversion
(Peer reviewed; Journal article, 2020)Gradient computations in full-waveform inversion (FWI) require calculating zero-lag cross-correlations of two wavefields propagating in opposite temporal directions. Lossless media permit accurate and efficient reconstruction ... -
Wax Deposition as a Function of Flow Regimes
(Master thesis, 2018)As petroleum fluids flow in subsea pipelines, the fluids are cooled by the surrounding water. Many crude oils contain substantial amounts of wax molecules, and if the temperature of the fluids drops below the Wax Appearance ... -
Well Control Aspects of Riserless Drilling
(Master thesis, 2013)This master thesis has investigated feasibility of effective well control in riserless drilling. An attempt was undertaken to design a realistic model of riserless well using advanced multiphase simulation tool and evaluate ... -
Well Control Optimization by Coupling Smart Proxy Models with Genetic Algorithm
(Master thesis, 2021)Generally, optimal well controls to maximize net present value (NPV) are obtained by coupling of numerical reservoir simulation with an optimization algorithm. This approach requires a significant number of numerical ... -
Well Control Optimization in Waterflooding Using Genetic Algorithm Coupled with Machine Learning Models
(Master thesis, 2020)Generally, optimum well controls to maximize net present value (NPV) in a waterflooding operation are obtained from a numerical reservoir simulation in combination with an optimization algorithm. This procedure is often ... -
Well control with Controlled Mud Pressure: Reviewing AGR’s well control procedures for the CMP system, analyzing and comparing with conventional well-control procedures, possible impact of technology.
(Master thesis, 2011)Dual Gradient Drilling (DGD) are a portfolio of drilling systems that in various ways pumpreturns from the well through a mud return line (MRL) from the seafloor, or somewhere between the seafloor and the rig floor. Two ... -
Well control with Low Riser Return System
(Master thesis, 2011)A response to the increasingly more challenging prospects to drill, due to depletion of old reservoirs and increasing water depths, is the Low Riser Return System (LRRS). The LRRS is a system designed to manage the wellbore ... -
Well integrity and late life extension - A current industry state of practice and literature review
(Peer reviewed; Journal article, 2024)Well integrity is an integral part of every phase of the well’s lifecycle. During the operational phase, well integrity monitoring and control is intended to reduce the risk of failures from degradation mechanisms so as ... -
Well Integrity behind casing during well operation.Alternative sealing materials to cement
(Master thesis, 2013)Maintaining well integrity during all well operations has become a major concern for operators worldwide. The maintenance of an increasingly aging well stock and the higher cost associated with new wells makes well integrity ... -
Well Log and Seismic Data Interpretation: Rock Physics Study of Poorly Consolidated Sandstones in The North Sea
(Master thesis, 2012)We use rock physics models for poorly consolidated rocks to diagnose reservoir sandstones in the Alvheim Field, North Sea. Geological factors that will control the rock physics and seismic properties include clay content, ... -
WELL LOG ZONATION AND CORRECTION BASED ON VARIATIONS IN AMPLITUDE AND LAYER THICKNESS
(Master thesis, 2011)Well log zonation is the usual practice to carry out well log analysis. Definition of bed boundaries at a very detailed level is difficult and time-consuming, and therefore some data is frequently untapped, especially when ... -
Well Path Optimization on a CO2 EOR Project
(Master thesis, 2019)Optimering er eit heller nytt emne i petroleumsindustrien, men har i det siste sett auka interesse. Innanfor EOR, eller Enhanced Oil Recovery, kan optimeringstilnærmingar bli implementert for meir fordelaktige brønnbanar. ...