No abstract

No abstract

Kikeh Field is located 120 km from Labuan in offshore Sabah Malaysia. The field, with 1330 m water depth, is the first deepwater development in Malaysia and consists of subsea and SPAR development wells. The West Setia is a non-propelled Semi-Submersible Drilling Tender being used for SPAR development activities. The Drilling Tender utilizes six stability columns supported by a twin-hull configuration. However, the derrick and partial rig package still sits on the SPAR (or platform deck) to carry out drilling and completion operations. The completion program covers not only standard scope of installation, i.e. lower, middle and upper completion, but also includes displacing fluid with nitrogen for riser dewatering and well clean up and testing. Several logging operations also were identified as tasks to be delivered during completion operations. Considering the wide scope of completion work outlined in the program, a detailed work assessment was conducted focusing on areas where offline activities could be conducted safely and efficiently. As a result of the assessment, at least seven completion-related activities were identified. During the first batch of SPAR completions which involved five wells, the result showed that the following activities were successfully completed offline, allowing the rig to be utilized for critical path operations:Tubular make up and racking backTree installationRiser annulus dewateringSetting/testing Mudline Hanger Packer (MLHP)Installation of flowline jumper and umbilicalClean up and flow testing the wellCement and reservoir evaluation loggingProduction Riser Tensioner installation and commissioningCycling and opening Formation Isolation Valve (FIV) This paper will describe in detail each of the operations involved, discuss rig capabilities and limits, and explain the challenges, safety considerations and lessons learned from the project as well as the time savings and value created from each of the activities.