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Pulltube12/2/2023 ![]() ![]() This approach was to bring all pipelines up to the deck within the conductor guide framing through vertical pipeline bundles nicknamed CONSPUB's ( Conductor Supported Pulltube Bundle). A new approach was developed to bring these pipelines up to the platform deck. The design team concluded that the four-leg jacket structure did not have sufficient space for conventional individual or bundled pulltubes. ![]() Incorporating 17 pulltubes would have caused significant congestion of the four main legs of the planned Enchilada jacket. Conventional pulltubes are supported along the main legs of the jacket. The final platform was designed for 17 pipeline connections and as many as 23 pipelines were considered during the early design. The two-piece lifted jacket concept offered significant cost and schedule advantages 2 and it was preferred to utilize the same concept even with the higher functional requirements of a hub, specifically a large number of pipelines. The original jacket design concept consisted of a four-leg jacket to be installed in two lifted pieces and joined in-place offshore. Prior to the decision to design the Enchilada structure as a Hub, the Enchilada platform was planned as a minimal stand-alone facility for drilling and production. The Enchilada platform was designed as part of this field development and was planned as a central Hub for numerous pipelines. The overall field development strategy in Garden Sanks Blocks 128 and 172 is described in Reference I. Benefits of this approach are discussed including cost savings and future pipeline flexibility, The CONSPUB approach described in the paper will provide designers with an alternative to conventional leg supported pulltubes and risers. This paper describes the designdetails used for the Enchilada design and discusses alterative details that may also be used. The vertical portions of the CONSPUB's are field installed, which defers costs for future pipelines. The CONSPUB's are vertically supported near the base of the jacket and require only lateral support at each guide elevation. The approach developed for Enchilada was to bring all pipelines up to the deck within the conductor guide framing through vertical pipeline bundles nicknamed CONSPUB's ( Conductor Supported Pulltube Bundle). The four main legs of the Enchilada jacket did not have sufficient space for conventional individual or bundled pulltubes. This large number of pipelines required either a new approach for the pipeline connections or the use of a jacket structure with more main legs. The Enchilada platform was designed for 17 pipeline connections and as many as 23 pipelines were considered during the design. ![]() The Enchilada platform was designed as a central Hub for numerous pipelines in the Garden Banks area of the Gulf of Mexico. ![]()
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