In gas storage or high-pressure wells, annular pressure is an unavoidable threat to safe, long-term resource production. The more complex situation, however, multiple pressure, which means happens in not only one annulus but two more. Such a situation brings serious challenges the identification of well integrity. However, few researches analyze phenomenon pressure. Therefore, this paper studie...

Dense slurry flow through centrifugal pump casing has been modeled using the Eulerian-Eulerian approach with Eulerian multiphase model in FLUENT 6.1. First order upwinding is considered for the discretization of momentum, k and ε terms. SIMPLE algorithm has been applied for dealing with pressurevelocity coupling. A mixture property based k-ε turbulence model has been used for modeling turbulenc...

In a hydrocarbon well, cement fills the annular gap between two steel casings or between a steel casing and rock formation, forming a sheath that isolates fluids in different zones of the well. For a well as long as several kilometers, the cement sheath covers a large area and inevitably contains small cracks. The cement sheath fails when a small crack grows and tunnels through the length of th...

Social isolation is the great enemy of psychiatric patients on the "ireshold of recovery. Mary Andere describes the Bromley scheme for casing the transition from hospital back into the community.

This paper introduces a comparative theoretical investigation of the conventional cathodic protection (CP) and the pulse cathodic protection (PCP) systems to show how both of them behave under different operating conditions. The effectiveness of the PCP system has been analyzed in the light of getting better protection-current distribution along the protected well casing at reduced anode curren...

We describe the application of a Perfectly Matched Layer (PML) combined with a self-adaptive goal-oriented hp Finite Element (FE) method to the simulation of resistivity measurements. The adaptive refinements and fast convergence of the self-adaptive hp FE method enhance the performance of the PML and, thus, enable the accurate and efficient truncation of the computational domain in open domain...

Pullout failure is one of the primary failure modes of API round thread casing connections. Make-up torque and thread tolerances are the two most important factors that can affect the pullout strength. In this paper, the pull-out failure process and mechanism are studied using the finite element analysis (FEA) method. In addition, the effects of make-up torque and thread tolerances on the pullo...