LINER TOP PACKERS
Slickline deployed Liner Top Packers as an enabler of enhanced oil recovery
A North American operator with wells completed with 3-1/2” and 4-1/2” casing wanted to embark on a well deepening program to increase production. The financial success of the program was dependent on being able to economically drill beyond existing casing and then place sealed 2-7/8” and 2-3/8” tubing in the new section.
DTI was asked to engineer a Slickline Set Liner Top Packer solution that could be landed in a Polished Bore Receptacle (PBR) at the top of the new tubing section. An engineered solution evolved from the existing Slickline Bridge Plug and Straddle System to deliver a sealing tool where the lower section sealed in, and landed on, the tubing PBR. Jarring down then set a packoff element and upper slip section to create a pressure barrier inside the original casing.
In close collaboration with the service provider DTI designed, manufactured and tested two customised tools in 6 weeks. Service company personnel visited DTI to function test the tools inside a flow control valve.
A slickline manipulation tool could locate inside the valve, manipulate the valve open and then dimple the moving sleeve to hold the valve in the open position. A second e-line locating tool could be used to locate a modified perforating gun inside the open valve and deform the valve sufficiently to hold it open.
The solutions enabled the service provider to resolve the immediate issue and the speed of response and solution quality was very well received by the operator.
FEATURES AND BENEFITS
DTI engineered solutions covering e-line, slickline and coiled tubing well intervention applications have supported our clients operational success for many years.
Our intervention expertise and dedicated engineering, manufacturing and test capabilities enable us to deliver solutions rapidly.