.... Given their infrastructure, depleted hydrocarbon reservoirs may be a suitable storage option. However, ensuring wellbore integrity is a significant challenge when storing hydrogen in such reservoirs. In this study, 3.81 × 7.62 cm cement samples were cured for 18 months and were cyclically exposed...

... to characterize the hydration of Portland cement in CO 2 injection wells. Properties of the Minnelusa formation in the Powder River Basin serve as a base case scenario. From this, we will run a sensitivity analysis to determine the influence of various parameters on cement hydration. These parameters consist...

... ABSTRACT: Casing force and deformation during MPC (managed pressure cementing) waiting setting stage in deep and ultra-deep wells significantly impacts wellbore integrity. To accurately analyze casing force, the cement hydration and heat release process during waiting setting of cement...

... permanently installed on the outer diameter of the 6-inch casing and cemented in place. At the time, a vacuum-insulated-tubing (VIT) completion was installed from surface to ∼11,369 ft (3465.3 m) to pilot-test a deep coaxial closed-loop geothermal system. The test well was flowing down annulus and up tubing...

... compressibility and the resulting pronounced compaction during hydrocarbon exploitation and possibly during CO 2 storage raises questions on the integrity of cement surrounding the legacy, monitoring, and injector wells. In this context, the study carries out a well stability analysis of a well present...

... ABSTRACT: The pursuit of high-performance lightweight formulations in well cementing plays a crucial role in the oil and gas sector. This paper provides a comprehensive examination of the development and practical application of lightweight cement formulations, focusing on their essential...

... ABSTRACT: Remedial cementing operations in the oil and gas industry are indispensable for ensuring well integrity and mitigating environmental risks. This paper delves into the multifaceted factors that influence the effectiveness of remedial cementing processes, with a dual focus on achieving...

... ABSTRACT: Well cementing is an essential process for well stability, involving the pumping of cement slurry into the annulus between casing and formation. This prevents fluid movement and provides support for the casing. Therefore, various additives are employed in cement design to meet...

... ABSTRACT: Carbon capture and storage (CCS) holds promise for mitigating global greenhouse gas emissions by capturing carbon dioxide (CO 2 ) from industrial sources and storing it in deep geological formations. However, the potential impacts of CCS on oil well cements, critical components...

... ABSTRACT: This study demonstrates the use of Artificial Neural Network (ANN) modeling techniques to estimate the Unconfined Compressive Strength (UCS) of lightweight oil and gas well cement. At varied simulated wellbore temperatures, 172 cement samples were reinforced with variable doses...

... impact completion equipment, tubulars including casing and liners, annular fluids, cement, and subsurface formations. Extreme temperature variations may also alter rock properties and fluid behavior. These thermal and pressure variations can affect injectivity and will induce mechanical stresses within...

..., the curing process of well cements, the accumulation of post-curing initial state of stress, debonding between the different components of the well and their fracturing. Key results are presented for standard well conditions and materials, they highlights the complexity of well integrity simulations...

... ABSTRACT: To minimize heat losses in the high temperature thermal storage wells, Brookhaven National Lab introduced one type of hydrophobic lightweight thermally insulating cement with a thermal conductivity three times lower than that of regular cement. However, the repeated thermal shock...

.... In this study, we studied the fatigue failure of cement through cyclic loading experiments on thick-wall-cylinder samples. To simulate the actual wellbore conditions, we designed a two-layered sample, incorporating casing and cement. A dedicated tri-axial facility was modified to introduce cyclic internal...

... opt for grout injection after the installation of the anchors. The present study presents the results of instrumented pull tests performed in Grouted Split Sets and its comparison with the result of tests performed in Split Sets without the application of cement, in an underground manganese mine...

... ABSTRACT In carbon dioxide (CO 2 ) capture and storage (CCS) technology, one of the goals is to prevent the injected CO 2 from leaking back into the atmosphere. The leakage paths include fractures on the cement sheath sealing the injection well and/or reactivated faults going through...

... ABSTRACT The process of cementing a well is essential to ensuring the well doesn't collapse. The cement slurry is pumped into the annulus between the casing and the formation. Cement restricts the movement of formation fluids while also supporting the casing. Different types of additives have...

... ABSTRACT Artificial sandstone-like rocks fabricated in the laboratory offer great advantages in controlling their grain size distribution, grain morphology, porosity, and cement content. Synthetic granular rocks offer an efficient way to validate existing analytical models, calibrate numerical...

... ABSTRACT Cementing process is one of the most crucial parts of the drilling operation that could determine the durability and the stability of the oil or gas wells. Many additives had been introduced into the formula of the oil well cement to reach certain quality to support the well. "Greener...

..." diameter core sample that has a concentric two-inch drilled hole is used in this study. A one-inch perforated pipe, as the casing, is placed inside the 2" hole, and the cement will be placed between the pipe and the core. 72 hours after pouring the cement between the core and the pipe, hydrogen is injected...