... to their superior shale inhibition, excellent lubrication, and high-temperature stability. The rheological properties of drilling fluids play a crucial role in drilling hydraulics, influencing operational safety and hole cleaning efficiency. While rheological measurements are routinely performed by drilling fluid...

... Abstract A large-scale experimental investigation was conducted to evaluate the impact of lateral trajectory on flow stability in horizontal wells. The experiment was carried out on a device that featured 50mm inner diameter (ID), 2m long vertical section, and 4m long inclined section...

... and distribution of drilling complexity, establish geomechanical models for multi-formation systems with complex lithologies, incorporating elastic modulus, rock strength parameters, pore pressure, and in-situ stress. Wellbore stability is assessed for different formations based on shear and tensile failure...

.... This includes stabilizing emulsions, which are of pivotal importance for Enhanced Oil Recovery (EOR). Also, it is a pressing issue for Kazakhstan, where complex reservoir conditions exist. This study examines anionic surfactants, SDS, and a Henna-based surfactant for emulsifying light and heavy crude oils...

..., the integrated completion technology is urgently needed. The stability of packer is the key consideration for the implementation of integrated completion technology. In this paper, an integrated completion string was proposed, and the corresponding three-dimensional solid model was established based on real...

... completions are widely used in unconsolidated sandstone formations, where they stabilize the wellbore and reduce sand production. However, limitations in sand control and formation damage can restrict flow rates, thereby impacting energy output and efficiency. Through recent advancements in Germany, new...

... Abstract Drilling operations in high-pressure and high-temperature (HPHT) environments present significant challenges to drilling fluid performance. Oil-based drilling fluids (OBDFs) play a critical role in ensuring wellbore stability, controlling formation pressure, and facilitating efficient...

... reducer HBPSi-DADN was prepared by free radical polymerization. The results show that hyperbranched fluid loss reducer HBPSi-DADN has a highly branched three-dimensional structure, low viscosity and high stability. When 3 wt% HBPSi-DADN is added to the drilling fluid base mud, apparent viscosity...

... of biomass pyrolysis into depleted oil and gas reservoirs (AlDossary et al., 2024). The primary goal is to achieve net-zero emissions by harnessing stability, high carbon density, and porosity of biochar for long-term carbon sequestration, thereby reshaping industry practices through sustainable initiatives...

... the values of nanosheet alone and surfactant alone. However, the emulsification abilities of the two nanosheet/surfactant systems with crude oil were quite different. S1 surfactant improved the emulsification ability of nanosheet, while S2 surfactant weakened the emulsion stability compared with nanosheet...

... were identified by Fourier-transform infrared (FTIR) spectroscopy. The zeta potential results show that both anionic (SDS) and cationic (CTAB) surfactants depict better stability, in carbonates and sandstones, compared to the non-ionic (Triton X-100) and zwitterionic (3- (N, N-Dimethylmyristylammonio...

... based on the Drucker-Prager criterion. The stability analysis of salt caverns under different interlayer distributions was conducted, and the distribution characteristics of plastic damage zones in salt caverns under different interlayer position distributions were compared. Considering the feasibility...

... in the open hole, the plug had to be designed as gas tight. HPHT gas-tight cement must present stability at HPHT downhole conditions to prevent any potential settling or free fluid that can compromise its performance. Fluid loss and thickening time properties are tailored accordingly, with tight fluid loss...

... of dolomite rock. Overall, the surface complexation model has demonstrated that during LSP-injection, the stability of the water-film is enhanced, suggesting a significant alteration in wettability towards a more water-wetting state. This wettability alteration plays a crucial role in increasing oil...

... a static foam analyzer, measuring foam half-life. Liquid unloading phenomena was investigated using an in-house developed column flow test. Foam rheometer was used to measure stability under high-pressure high-temperature (HPHT) conditions. The stability of foam greatly depends on ideal hydrophilic...

...¼ in. Trials-as well-included wells with expected severe to complete loss of circulation scenarios therefore, expanding the evaluation of fluid ability for stabilizing the shale under such tough operational conditions. The operation's success in achieving well objectives depended on appropriate mud formulation...

... of equivalent density of wellbore collapse pressure in different time domains, and the influence of wellbore trajectory on wellbore stability considering different occurrences of the weak plane. The results show the obvious influence of intermediate principal stress on the failure of the rock matrix...

... annular pressure drilling casing and cementing casing design knowledge management modification reservoir characterization innovation sidetrack kpis geology drilling operation management inertia learning spe-219341-ms gupco drilling case study illustrate collaboration procedure stability...

... practices can be helpful for optimizing challenging wells with the problems of pressure reversals, drilling fluids losses, well control, drillability issues in gumbo clay/ shales and wellbore stability. upstream oil & gas asia government drilling fluid property well control pakistan government...

... upstream oil & gas modelling strategic modelling approach operation constraint accuracy gas injection injection ga transient simulator pipeline troubleshooting gas lifted well limitation stability problem identification Introduction Companies spend millions of dollars...