Publications

Development drilling campaign was conducted in 2018 at Bali Offshore by Kangean Energy Indonesia (KEI). 3 Horizontal wells and 1 deviated well were drilled using semisubmersible moored rig (water depth varies in between 400 to 750 ft) and completion equipment were ran in 2 stages of Lower & Upper completion. Formation Isolation Valve (FIV) was installed in the Lower completion part. This valve was installed at the top of gravel pack assembly to isolate reservoir zone before Upper completion part was installed. The FIV can be operated hydraulically or mechanically using shifting tools. In this project, FIV was installed at the high inclination point (more than 60 Deg). Various techniques can be used to manipulate the FIV mechanically, either using wire (slickline or wireline) or Coiled Tubing (CT). Due to high inclination well, CT was chosen as the primary equipment to run shifting tools to open and close the FIV. From the torque and drag simulation for CT in the planning phase, even when using CT, there were not enough forces to push to shift open the FIV. Because of this, Hammering Tool was planned to run when running shifting tool, in order to anticipate on the early stage, the possibility of difficulties to open FIV especially after subsea Xmas tree installation. This paper shows how the decision had been made to add hammering tool into Bottom Hole Assembly (BHA) as a main component prior the execution of the project and essentially the success story of Hammering Tool application itself.