PLT logging while tractoring with Well Tractor® 212 Tandem
Well typeOil producer
Bottom-hole pressure2,176 psi
Well head pressure1,885 psi
As is the case with many horizontals, the operator expected debris in the well, so clean-out services were necessary prior to the PLT operation.
- Perform clean-out/drift runs with Well Tractor 212 in tandem configuration and the Well Cleaner® Power Suction Tool (PST). Additionally, the Welltec® Reverse Circulating Bit (RCB) would be used as a contingency option.
- Perform PLT using the tractors for LWT on a mono cable
Welltec carried out significant planning prior to the operation, including well simulations and physical testing. Well parameters, such as wireline tension, pick up weight, and tractor pull forces were confirmed to be within acceptable limits to handle the 16,000-foot horizontal section. Simulations demonstrated that the pull force needed to reach TD could only be achieved with two Well Tractor 212s’ in a tandem configuration. Prior to mobilization, tractors were tested in-country to ensure the tools met the necessary conditions to carry out work on the project.
First, the PST was run with the Well Tractor 212 in tandem configuration to remove debris in order to reach TD and remove potential contamination to the PLT data. It took three clean-out runs with the PST before there was a clean path to TD. Subsequently and over the course of three runs, the Well Tractor conveyed the PLT through the lateral to TD, capturing logging data in LWT mode.
The logging program was executed fully, marking the first time LWT has been performed with Well Tractor 212 in tandem configuration. Data were successfully acquired in both down and up passes, providing the client with essential knowledge of the reservoir and the well’s production profile.
Welltec is the first company able to provide technology and solution that allowed the client to reach TD of 20,161 ft (6,145m) and acquire PLT data in this well.
The Well Tractor was regarded as a revolution in the industry when it was introduced in the 1990’s. It enables operators to extend the reach of traditional e-line deployment into highly deviated and horizontal wells.
Our clean-out solutions ensure access into new wells and optimized production from old wells: removing sand and debris; cleaning SSSV seats; clearing obstructions; eliminating scale deposits; accessing isolation valves.