Composite Production Riser Design

Abstract

position of the Offshore Technology Conference or its off~cars. Electronic reproduction, distri-but~on, or storage of any part of this paper for commercial purposes without the written consent of the Offshore Technology Conference IS prohibited. Permission to reproduce in print is restricted to an abstract of not more than 300 words; illustrations may not be copied The abstract must contain conspicuous acknowledgment of Were and by uhom the paper was presented Abstract A concentrated effort is underway to design a Composite Production Riser (CPR) and demonstrate its suitability for deep water (3000 to 5000 feet) applications. Functional, operational, and performance requirements have been specified by oil company participants and are representative of current and anticipated projects. Riser responses to platform motions and environmental loads have been provided based on global analysis of a TLP system.The use of well established advanced composite stuctural design methodologies has resulted in a CPR design with predicted capabilities that exceed the expected loadings. The design of the CPR joint requires three separate efforts: composite tubular design; composite-to-metal interface design; and metal connector design. The composite tubular wall is a hybrid composite structure, with carbon fiber and glass fiber reinforcements in an epoxy matrix. The composite-to-metal interface is a multiple traplock configuration, well-suited for supporting axial and pressure loadings. A premium threaded connection is used for the metal connector design.The performance of the CPR will be verified through testing of subscale and full-scale specimens. Preliminary results of this testing are discussed.The CPR design effort demonstrates the ability of engineering functions from diverse industries, institutions and companies to work together to obtain a common goal.

Sea Water Ageing of Composites for Ocean Energy Conversion Systems: Influence of Glass Fibre Type on Static Behaviour

“…The offshore industry has also become interested in composite materials in recent years, and several projects have generated both material data (e.g. the Marintech programmes [12]) and prototype experience on structures such as risers [13].…”

The Use of Composite Materials in Repairing and Reinforcing Pipelines, Piping, and Structures

“…In the late 1990s, an extensive research program involving Lincoln Composites, Shell Oil Company, Conoco, Hydril, University of Houston, Hexcel Corporation, and Stress Engineering Services, Inc. was undertaken to assess the capabilities of composite production risers for deep water depths up to 5,000 feet [16][17][18][19][20]. In a program similar to the one conducted by IFP, this program incorporated a total of 80 test samples that were fabricated and tested.…”

A review on design, manufacture and mechanics of composite risers

“…The risers had an external diameter of about 230 mm, a joint length of 15 m and were made of hybrid ±20 0 carbon and 90 0 glass composites and can sustain a fatigue life 3 times longer than a steel riser. Other early uses of composites include the development of production (Baldwin et al, 1998;Baldwin et al, 1997) and drilling risers (Andersen et al, 1998a;Andersen et al, 1998b) for deepwater. An example specification of a typical composite riser by Kim (Kim, 2007) is presented in Table 1.…”