This calculator calculates the triaxial stress (VME) at a given depth.

This calculates AP collapse resistance for a specific pipe.

This calculator calculates the change in length of pipe hanging in the hole due to tension, ballooning, buoyancy and thermal effects.

This calculates AP collapse resistance for a specific pipe.

This information provides insight to aid in preventing common failures and improving industry practices to reduce incident rates in addition to saving time and money.

This GATEKEEPER article focuses on the prediction, prevention and remediation of liquid loading, including discussion of liquid loading analysis.

Casing and tubing that are subjected to combined loads have higher collapse strength than previous formulas would predict, permitting the use of thinner walled, or lower strength, pipe than formerly required.

Triaxial evaluation of loads is used extensively for casing and tubing string design and analysis. The paper presents a method of determining the triaxially based collapse strength of casing and tubing subjected to simultaneous axial and internal pressure loads.

A method is presented such that two parameters can be used to fully describe the thermal characteristics of a tubing string undergoing an injection or production process.

This paper was prepared for presentation at the SPE Applied Technology Workshop on Risk Based Design of Well Casing and Tubing held in The Woodlands, Texas, U.S.A., 7-8 May 1998.

Deepwater high pressure, high temperature (HPHT) drilling environments present difficult challenges to well engineers.

This work is a discussion of how the limit performance is being defined and quality systems are being revised for API connections in accordance with the objectives of the LRFD method for OCTG.