... of the component within the design space without any exclusive analysis. This approach leads to effective design and saves computational time. collapse pressure slot length maximum radial deformation imperfection machine learning orientation eccentricity slot depth critical parameter artificial...

... configuration as compared to the higher pairlobe configuration because of the larger eccentricity. The unbalance is modeled in terms of an equivalent mass of therotor with the eccentricity of the rotor. Also, the analysis provides an estimation of relative bending stresses, shear forces, lateral displacements...

... acoustic impedance image Limestone Formation caliper measurement assessment Reservoir Characterization logging while drilling Upstream Oil & Gas high-resolution image real time system amplitude travel time image rodessa limestone formation wellbore integrity Wellbore Design eccentricity...

...-well fracture complexity is minimized. This methodology does not just look at a single perforation, or cluster. Instead, it accounts for the stress variation between multiple perforation clusters within a frac stage, in addition to perforation orientation, dimensions and eccentricity, to predict...

... the drill bit that generates eccentricity by extending its foot to the wellbore. Abstract Over the past few decades, drilling engineers have developed two types of rotary-steerable systems (RSS) as directional drilling tools: push-the-bit and point-the-bit bottomhole assemblies (BHAs). Some eccentric...

... Abstract The effect of eccentricity on pressure drop and mud displacement in annular flow is an important topic in drilling and cementing. Most researchers have focused on the effect of pressure drop with eccentricity and pipe rotation in drilling. In cementing, determining the fluid rheology...

... and the wellbore wall. It is speculated that the casing may be offset to an unknown value. Combination of pipe rotation and eccentricity helps to form a highly effective seal to minimize fluid losses. Eccentric configuration of Casing Drilling is supported through some observations by several publications ( Salehi...

... the hydraulic complexities of fluids, role of Particle Size Distribution (PSD) and how it relates to the plastering effect, type of drilling fluids, borehole shape, role of lost circulation materials (LCM), and casing eccentricity. This paper presents numerical, analytical and experimental methods to study...

... stress equation eccentricity boundary condition drilling reservoir geomechanics wellbore stability spe 166144 wellbore pressure von mise stress salt rock wellbore design cement operation salt creep behavior deformation Introduction Salt is one of the most effective agents in nature...

.... In addition, hole diameters vary frequently during the drilling process. When the diameter of the casing changes, even though the production tubing size remains the same, the packer usually becomes eccentric. Current methods are not modeled properly and severely underestimate stress values and pick-up loads...

... eccentricity in determining the post-expanded tensile yield. Both longitudinal and transverse tests were conducted. Taking into consideration the geometric constraint when cutting the transverse specimen, two specimen geometries were used for the longitudinal tests to avoid possible specimen size problems...

... is 60 to 75°. Eccentricity of drill pipe is shown to exacerbate barite sag ( Bern et al. 1998 ). Abstract Under certain drilling conditions, the weighting material particles such as barite can settle out of the drilling fluid. This phenomenon, known as barite sag, can lead to a number...

... isambourg wellbore annular pressure loss pressure loss ratio plr eccentricity field study pressure loss strouhal number field measurement rotation speed flow rate bottom hole pressure drillpipe rotation speed delwiche upstream oil & gas spe 135587 drilling operation drilling fluid...

... property safety factor optimization upstream oil & gas thickness approximation society of petroleum engineers eccentricity ovality probability hp ht well maximum stress spe 134550 innovative approach complex reservoir stochastic study high pressure high temperature well tubular string...

... was therefore considered adequate for the aimed purpose. expansion true stress-strain curve eccentricity deformation capability superduplex corrosion inhibition pipe uniform elongation specimen residual stress h2s management carbon steel grade evaluation grade 40 grade 50 casing design...

... in prediction of the pressure drop. To increase confidence in the simulated results, their accuracy is cross-checked with the analytical results available for concentric cases. In the case of eccentricity, since there is no analytical solution available, the mesh size is continuously decreased until...

... several depths-of-investigation measurements. However, most of these measurements, especially the shallow ones, are subject to borehole and eccentricity effects in very conductive muds and large boreholes. These effects can be severe. Therefore, conventional borehole corrections based only on borehole...

... that accurately predicts the effects of drillpipe rotation on annular pressure drop / ECD. Results using a preliminary model 10 were published for concentric wellbores, and subsequently results for a more comprehensive model 11 were published for eccentric wellbores. Abstract It is important...

.... Averaged values were used to calculate ovality and eccentricity for each sample ( Figure 2 ). Abstract As an enabling technology, solid expandable tubulars continue to revolutionize the design and construction of oil and gas wells. Although solid expandable systems are now widely accepted as a viable...

.... This study involves experimental research and theoretical analysis to enhance cuttings transport capacity in oil and gas well drilling operations. The effects of drilling fluid rheology, mud density, temperature, borehole inclination, pipe rotation, eccentricity, rate of penetration (ROP) and flow rates were...