Prediction of Wear and Stresses While Drilling Through a Riser Flex Joint

Author:

Paslay P. R.1,Cernocky E. P.2

Affiliation:

1. Techaid Corporation, 6110 Pleasant Ridge Road, Suite 1601, Arlington, TX 76016

2. Shell Development Company, P.O. Box 481, Houston, TX 77001

Abstract

Flex joints in risers introduce abrupt directional changes along the drillstring. High drillstring stresses and flex joint wear rates are introduced, particularly when the drillstring tension is high. An analysis procedure is presented which finds the drillstring/flex joint contact loads in the vicinity of the flex joint as a function of the tension in the drillstring at the flex joint. The tensile and contact loads of the drillstring at the riser are used to estimate the wear rate on the flex joint and the axial and bending stresses in the drillstring. This example shows the value of the procedure in estimating maximum allowable angles for the flex joint.

Publisher

ASME International

Subject

Geochemistry and Petrology,Mechanical Engineering,Energy Engineering and Power Technology,Fuel Technology,Renewable Energy, Sustainability and the Environment

Cited by 2 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Discrete Vibration Stability Analysis With Hydromechanical Specific Energy;Journal of Energy Resources Technology;2017-10-04

2. Casing Burst Strength Degradation Due to Casing Wear;Journal of Energy Resources Technology;2017-09-28

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