Non-explosive method for equalizing pressures between tubular strings
Efficient, safe drill pipe, liner, tubing and casing recovery operations without the need for explosives.
The Welltec® Puncher provides an efficient, e-line conveyed, non-explosive method for equalizing pressures between tubular strings. Its innovative design quickly creates a large diameter hole in the tubular at the target depth for pipe recovery or completion removal without the use of explosives. Utilizing a fast, drilling technique rather than a blade, the Welltec Puncher produces a precise, uniform, large area hole. It can be run slick to any depth in the well or equipped with a ‘no-go’ for a hole punch at an exact depth. Multiple holes can be drilled in a single descent and it can be deployed independently or combined with the Well Tractor® for punching in highly deviated or horizontal wells.
An oil producer was completed with three 6-5/8” expandable sand screens covering the upper and lower formations. The two uppermost screens each contained inflow control devices to...
| Toll body OD | 3 1/8” |
|---|---|
| Length | 20.5 ft |
| Weight in air | 385 lbs |
| Min. completion ID | 3.4” |
| Max. pipe ID | 7" |
| Hole diameter | 0.31” - 0.5” |
| Max. well pressure | 25,000 psi |
| Max. well temperature | 302° F |
| Tensile strength | 42,000 lbs |
| Compressive strength | 50,000 lbs |
