Publications

This paper describes an overview case history of cased hole Single Trip Frac Pack completion in ConocoPhillips Indonesia Block B area of the West Natuna Sea, Indonesia. The Block B PSC is located in Indonesian waters of the West Natuna Sea. Over past 8 years, a total of 18 oil and gas wells have been drilled and completed using Single Trip Frac Pack (STFP) completion. Single Trip Fracpack technology combines well perforating, perforation clean up, screen placement across the producing interval, proppant placement into a fracture created within the reservoir, and proppant placement between the screen and casing with a single trip in the wellbore. Also utilized in conjunction with the STFP system is further technology of Alternate Path Screen technology and multi-zone packers, which are shunt tubes on the screen and diverting systems. All sand face completion equipment is run in the wellbore as a system reducing rig time and minimizing any damage and fluid loss to the reservoir. Single trip technology can save 1-3 days of rig time depending on depth and length of the producing interval and usually results in improved well productivity. Cased hole perforated fracpack completions are often the preferred completion designs for weak rock strength multi-layered reservoirs with interbedded reactive shales. These completions eliminate or minimize sand production through use of a specially designed screen and properly sized proppant pumped between the screen and the casing and inside the perforation tunnels. Fracpack completions are used to pump the proppant into place creating a fracture that is filled with the proppant. Utilization of alternate path technology increases the probability that proppant is placed around the screen resulting in improved well reliability, and more importantly improving well productivity by ensuring proppant is placed in the perforation tunnels along with the fracture connecting the well to the reservoir some distance away from the wellbore. Since 2000, ConocoPhillips Indonesia has successfully completed 18 single trip fracpack wells in the West Natuna Sea. Many world first records completions have been achieved over past 8 years. ConocoPhillips Indonesia accomplished the longest treatment length using a single trip fracpack system in the world. A major achievement of using this sand control technique was no well failure and evidences of sand production present in production facility. ConocoPhillips successfully gain productions up to 300 MMscfd and 20,000 BOPD of using this proven system. Single Trip Fracpack completion technology has added significant value to the Indonesia Business Unit and will continue to be used in future developments. Many lessons learned, best practices, and processes developed within the Indonesia Business Unit have been transferred to other field developments within ConocoPhillips.