Case Study on Remotely Operated Intelligent Plugs to Eliminate Multiple Wireline Runs in Offshore Completions

Abstract

This paper introduces a novel application of intelligent completions using remotely operated intelligent plugs that can eliminate multiple wireline runs. This case study outlines completion of two wells in offshore Vung Tau, Vietnam using intelligent plugs. The plugs were used to test tubing, set the packer, and later act as deep-set barriers for christmas tree installation. The wells were completed with two intelligent plugs preinstalled and run-in-hole (RIH) open. One was installed above the production packer and the other below. Use of such intelligent plugs allowed opening and closing the plugs remotely; this feature is attributed to the plugs' onboard decision-making electronics to monitor well conditions programmed to either open or close whenever a specified condition (known as a trigger) is detected. This allowed the operator to communicate to the tool remotely from the surface using applied-pressure commands. The upper plug was closed initially to test the tubing string. It was later opened and the lower plug was closed to set the packer. The lower plug was then opened to test the packer. Both plugs were later closed to act as barriers when the blowout preventer (BOP) was removed and the christmas tree was installed. Both plugs were then opened and pulled out of hole (POOH) on wireline. The use of remotely operated intelligent plugs helped the operator successfully eliminate eight wireline runs, saving approximately 15 hours of rig time. Considerable monetary savings were gained by removing intervention runs. Additionally, health, safety, and environment (HSE) risks associated with rigging up and running wireline were also eliminated in this case. The industry is striving to perform completion and intervention activities in a safer and more economic manner. This case study of remotely operated intelligent plugs can be a timely addition to existing intelligent completion solutions.