... field located in Northwest (NW) China in 2013. The reservoir is overlaid with a caprock and bounded by two penetrating faults. The stability of caprock and faults during depletion and subsequent injection must be comprehensively evaluated for formulating storage site characterization and reservoir...

... the upper limit pressure. geology geological subdiscipline reservoir reservoir geomechanics natural gas storage storage reservoir extraction characteristic construction integrity stability underground ga storage-a case study geologist modeling & simulation evaluation underground...

... engineering. Based on triaxial and shear experiments, transverse isotropy theory and weak surface criterion, and integrating the mechanical damage under stress unloading and hydration in drilling wells, a borehole stability model under the synergistic effect of stress unloading and hydration has been...

... platform engineering university lateral resistance stability china university mechanical characteristic Introduction Deepwater drilling accidents are frequent, and according to operational data, 50% of deepwater drilling accidents occur in shallow drilling, which makes the establishment...

... as the base fluid to provide density and minimize the total amount of acid-soluble solids in the fluids (as well as a very low crystallization temperature). Lab studies were conducted for rheological stability across a range of temperatures and for long-term stability under high temperature conditions. Return...

... on-bottom stability during installation. This paper intends to highlight the unique challenges and complexity of Rosmari Marjoram Offshore Platform (RMP) jacket foundation design, and how the team successfully address the issues. The ‘Bespoke’ skirted mudmat foundation option was proposed whereby the sizes...

... Abstract The presence of gas hydrates beneath the mud line introduces significant uncertainties in offshore drilling operations, particularly with regard to wellbore stability. This study aims to evaluate the impact of gas hydrates on wellbore stability using a developed temperature simulator...

..., wind, and currents, have to be considered. Hydrodynamic behaviours can only be modelled accurately in time domain analysis, which requires an immense computational effort, when several load cases are taken into consideration. A more efficient approach is to first conduct stability analysis to identify...

...Dynamic Stability of Floating Structures Loads on Floating Platforms Wind turbines on floating platforms in offshore environment are under the influence of various loads. These loads can be categorised as follows: Abstract This paper provides a literature review of the research work...

... in this study. The standalone polymer, nanofluid (NF), and combined polymer-nanofluid solutions are prepared in different salinities (1200-40,000 ppm). The zeta potential of solutions is measured to determine the stability of NF at various salinities. Contact angle measurements are performed to determine...

... of new potential mechanism of nanoparticles to improve oil recovery with study case in an offshore Malaysian oilfield. The silica-based nanoparticles were used in this study, and additives of polymer and surfactant were involved to improve stability of fluid and observe any potential of novel mechanism...

... reaction elevated ph h2s management glut dmo biocide persistency upstream oil & gas formaldehyde nitrite water sample glutaraldehyde bacteria level corrosion management calibration curve stability hydrolysis bacteria Introduction Closed loop cooling medium systems...

... high pressure high temperature sandstone core crystalline starch nanoparticle synthesis crystallinity hydrolysis interface oil recovery stability csnp acid hydrolysis xanthan nanoparticle interaction Introduction Recently, the oil and gas industry are grappling with the reality...

... was evaluated for its performance under controlled laboratory condition and the results are discussed accordingly. Rheology analysis at 96°C, showed that, at low concentration of 250ppm, Schizophyllan can achieve 11 cP which is about 90% more than live crude oil viscosity. Thermal Stability of this polymer...

... the limestone rock (i.e., calcite) wettability from oil or mixed-wet to more water wet (i.e., stable water-film), and helps to improve the stability of the foam-film. In the previous study (SPE-196407-MS) we investigated the impact of our "smart water" or low salinity injection on the surface complexes...

.... This paper presents rheological studies at bottomhole static temperature (BHST) and cool down temperatures of selected well candidates that demonstrate superior thermal stability of this novel fracturing fluid. With polymer loading of 25 lb/1000 gal, the fluid viscosity stayed above 300 cP at 100 1/s shear...

.... Zirconium crosslinking chemistry is complex and depends on many factors such as pH, metal to ligand ratio, ligand order, ionic strength, and type of polymer used, which in turn influence the delay time, thermal stability and shear resistance performance. This work evaluates the rheological performance...

... reports nano-polysilicon as a new depressurization and injection-increasing agent. The stability of nano-polysilicon was studied in the present of various ions, including Na + , Ca 2+ , and Mg 2+ . This study finds that the addition of nanomaterials can improve porosity and permeability of porous media...

... Abstract Published numerical and analytical solutions for wellbore stability predict certain trends in the behavior of hole geometry as a function of time. In general, shear failure is expected to increase in severity with time to produce over-gauged hole sections. However, these solutions do...

... to ensure system stability. The results concluded that the power system will remain stable during a three-phase fault at the highest system voltage. In the event of a total power outage, the electrical system was designed to safely shutdown the plant and then restart it to resume production. The power...