Results 221 to 230 of about 547 (264)

Dynamic characteristics of a drilling riser considering drill string–riser collision under internal solitary waves

Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment
To address the large-deformation problem that may occur in a drill string–riser system under internal solitary waves (ISWs), a physical model is developed based on Hamilton’s principle, in which the coupled effects of ISWs, the drill string, drilling fluid, and the drilling riser are comprehensively considered.
Pan Fang, Pengfei Fan, Yong Zhang, Kexin Wang   +3 more
openaire   +1 more source

Influence of the Riser Boost Line on the Thermal Stress of Riser in Deepwater Drilling

Materials Science Forum, 2019
In deep water drilling, the existence of boost line makes the wellbore temperature change violently, and the thermal stress caused by it has a great influence on the strength of the riser. The paper considers the variable mass flow caused by the boost line fluid entering the wellbore during deepwater drilling.
Kui Dong Luo, Jun Li, Hong Wei Yang, Jiang Shuai Wang, Xin Zhang   +4 more
openaire   +1 more source

Design Considerations for a Composite Drilling Riser

Journal of Petroleum Technology, 2000
This article is a synopsis of paper OTC 11006, "Design Consideration for Composite Drilling Riser," by Mamdouh M. Salama, SPE, Conoco Inc.; Jagannathan Murali, Norske Conoco A/S; Donald D. Baldwin, Lincoln Composites; Ove Jahnsen, SPE, Kvaerner Oilfield Products; and Thor Meland, Statoil, originally presented at the 1999 Offshore Technology Conference,
openaire   +1 more source

Storm Disconnect Of Deepwater Drilling Risers

Offshore Technology Conference, 1979
ABSTRACT Deepwater drilling risers are equipped with flotation to reduce the shipboard tensioning requirements. When such a riser must be disconnected and hung off due to severe weather, certain steps should be taken to protect it and the drilling vessel against damage.
C-T. Kwan, T.L. Marion, T.N. Gardner
openaire   +1 more source

Well Control Procedures for Dual Gradient Drilling as Compared to Conventional Riser Drilling

Proceedings of SPE/IADC Drilling Conference, 2003
Abstract In order to meet the world's increasing demand for energy, petroleum producing companies must search for oil and gas in increasingly hostile environments. One area that shows great promise is in the deep water areas of the U.S. Gulf of Mexico.
J. J. Schubert, H. C. Juvkam-Wold, J. Choe   +2 more
openaire   +1 more source

Application of a Deepwater Riser Risk Analysis to Drilling Operations and Riser Design

Offshore Technology Conference, 2001
Abstract Running and retrieving a deepwater marine drilling riser system is a high-risk operation that is conducted on a normal basis. During this operation the contractor is exposed to one of deepwater drilling's key problems, large cyclic top tension on the riser resulting from vessel motions. The extreme increase
Billy D. Ambrose, Matthew S. Childs, Steven A. Leppard, Russell L. Krohn   +3 more
openaire   +1 more source

Thunder Horse Drilling Riser Break - The Road to Recovery

Proceedings of SPE Annual Technical Conference and Exhibition, 2004
Abstract This article presents key learnings by BP's Wells Team on the Thunder Horse project after responding to a major incident— the break of the drilling riser on the Discoverer Enterprise drillship in May 2003 in the Gulf of Mexico.
Bill Kirton, Gary Wulf, Bill Henderson
openaire   +1 more source

Vortex-Induced Vibration Effects of Production Risers in Proximity with Drilling Risers or Tendons

Offshore Technology Conference, 2018
Abstract This paper examines the effects of ocean currents on the vortex-induced vibration response of deepwater tubulars, such as umbilicals, production risers, tendons, and drilling risers, in proximity. This issue has received very little attention by the industry yet potentially has substantial importance to the design of deepwater ...
Don W. Allen, Nicole Liu
openaire   +1 more source

Increasing the Operation Window for Drilling Risers on DP Vessels by Monitoring Riser Angles

Volume 3: Pipeline and Riser Technology, 2012
Drilling operations are taking place in ever deeper waters and harsher environments using dynamically positioned (DP) vessels. A DP control system maintains the vessel in a fixed position or pre-determined track exclusively by means of active thrusters based on measured position from satellites and hydroacoustics.
Anne M. Rustad, Anna K. Ervik, Asgeir J. Sørensen, Carl M. Larsen   +3 more
openaire   +1 more source

Well Control When Drilling With a Partly-Evacuated Marine Drilling Riser

IADC/SPE Managed Pressure Drilling and Underbalanced Operations Conference & Exhibition, 2011
Abstract The Low Riser Return System (LRRS) is a method used for managing wellbore pressure during offshore drilling operations by adjusting the mud level in the marine riser by returning mud and cuttings to surface via a subsea pump in a separate conduit.
K. Falk, B. Fossli, C. Lagerberg, A. Handal, S. Sangesland   +4 more
openaire   +1 more source