Client: Anadarko Petroleum Company (APC)
Project: Acid Stimulation of Wells
Location: KC875 #1 (Lucius), GC770 #1 (Caesar-Tonga), and GC683 #3 (Caesar-Tonga)
Scope of Work
The prescribed acid treatment to stimulate each well was pumped down dual, open-water coiled tubing (CT) downlines to the subsea well location. The TEI 15K STIM package was used to interface with the well’s subsea tree (XT) and the acid entered the XT and completion via a third-party choke insert. Following completion of pumping, each well restarted production and returns were flowed back to the production facility via the existing production flowline(s).
Typically, this type of scope of work is completed with a rig, stimulation vessel and marine riser with BOP via direct vertical access – which can, in some cases, include necessary wireline services. Pumping outside of a true “open hole” and flowing acid returns into the existing pipelines reduces cost, duration and HSE exposure, allowing an operator more options and opportunity to employ this IOR method.
Currently, we are working actively with clients to potentially use the Island Venture to handle the full scope of pumping, returns and well restart for well stimulation jobs. Once a safe and successful solution is defined, we will have changed the rig-schedule driven market to include job mobilizations aboard suitable vessels of opportunity.
