Development and Metallurgical Testing of New Spherical Gripping Technology vs. Traditional Die Slips

ABSTRACT: Presents a new pipe gripping method using spherical balls to replace conventional die slips with the potential for significantly less damage to and better load distribution around pipe during handling. Describes the testing scope, results and analysis of ball versus slip...

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Equipment Vibration Problems: Tools and Techniques Used to Solve Difficult and Unusual Vibration Problems

Abstract: The most common equipment vibration problems are often solved in industry without the use of specialty engineering resources. Routine vibration problems—from machinery imbalance and misalignment to simple cases of noise and resonance—are often addressed at the plant...

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Key Considerations for the Design of Fiberglass (GRE) Lined Downhole Tubing

ABSTRACT: Downhole production well tubing is exposed to severe corrosive environments. Plain carbon steel tubing usually does not exhibit an adequate service life in highly corrosive service and the common alternative, corrosion resistant alloys, can be relatively expensive.One...

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Key Considerations for the Design of Fiberglass (GRE) Lined Downhole Tubing

ABSTRACT Downhole production well tubing is exposed to severe corrosive environments. Plain carbon steel tubing usually does not exhibit an adequate service life in highly corrosive service and the common alternative, corrosion resistant alloys, can be relatively expensive. One...

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Rational Stress Limits and Load Factors for Finite Element Analyses in Pipeline Applications Part I – Linear Elastic Stress Limit Development

ABSTRACT: In this paper, a rational stress limit based on the von Mises equivalent stress is established for pipelines subjected to internal pressure. This stress limit is based on the ASME pipeline Code’s design margin for the service and location of the installation. These...

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The Use Of Acoustic Emission Testing On Long Term Monitoring Of Damaged Components

ABSTRACT: Conventional acoustic emission (AE) commercial applications in the USA focus on assessing the structural integrity of pressure vessels and tanks. Even though there is a wide variety of newly developed advanced non-destructive techniques supporting these assessments as...

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Setting Up Pipe Hanger Survey Programs At New Power Plants

ABSTRACT The ASME piping Code has long recognized the need to perform regular monitoring of pipe hangers at power plants.  This is true not only of existing power plants but also of new power plants, including HRSGs and “conventional” steam generating plants.  Pipe hanger...

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Prediction of Elastic-Plastic Boundary Around Cold-Expanded Holes Using Elastic Strain Measurement

Abstract The cold-expansion process is used routinely for improving the fatigue life of holes in a variety of components. The expansion process involves drawing a slightly oversized tapered mandrel through the hole. Upon expansion, the material near the hole deforms plastically...

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The Feasibility Of Mini Coiled Tubing To Cleanout A Plugged Umbilical

ABSTRACT The purpose of this paper is to present an evaluation and assess the feasibility of various Coiled Tubing (CT) sizes to reach and remove a wax plug in a capillary in an umbilical. The wax plugs are located at a prescribed distance along the length of the umbilical. The...

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