Who Needs Two Trips? Remotely Activated Downhole Tools Facilitate aDeep-Water Single Trip Completion.A Case Study of the First Deployment

摘要

Successfully deploying a single trip completion system in a deep-water environment requires an innovativetechnical solution to address the risks that come with this environment.Following a request from the operatorfor a deep-water single trip solution,a number of different system options were proposed.Each system wasevaluated against the operator's requirements,and a Radio Frequency Identification(RFID)technology-based system was selected as it offered the greatest flexibility in both activation and contingency methodsto meet the demands of the project.It was proposed to hold a 2 stage System Integration Test(SIT)at a test rig in Aberdeen.The first SITwas performed with a small number of tools that could be setup in different modes to prove the system'slogic against the operator's expectations.Whilst this was conducted successfully a number of learnings andoperational optimisations were captured.These were fed into a full-scale SIT which was deployed at thesame test rig.This second SIT involved a complete representation of the single trip system and was designedto test the final system logic prior to deployment into an offshore environment.The system was then installed successfully in November 2018,on a subsea well,offshore Nigeria withno intervention.It resulted in an operational time saving of at least 60% over the previous best recordedtime for a conventional two-trip completion from the same rig.This represented a step change in operationalefficiency and will now be the operator's base case completion methodology as they develop the fieldfurther.This is the first time a single trip completion has been deployed in this fashion in a deep-water,offshoreenvironment.The demonstrable step change in operational time and resultant project OPEX savings,provesthat the use of RFID and remote actuated tools within completions offer excellent alternatives to traditionalmethods.