Hansen Downhole Pump Solutions
Innovative downhole pumping solutions for deep oil wells, gas well dewatering, and more
To allow leaving production/injection in a wellbore permanently for well abandonment, any micro tubes (control lines, sensor cables, chemical injection lines, etc.) outside the tubing must be removed to properly place a barrier material as for example cement in the production annulus. The patent pending wireline (alternatively e-coil tubing) tool being developed will remove the micro tubes and bring them to surface so that such a barrier placement can be done.
This animation illustrates how the tool we are developing will locate production/injection tubing collars, then locate micro tubes externally of the tubing, followed by cutting the lines above a cable protector, whereafter the lines are grabbed, cut and retrieved from outside the tubing.
00:14 Tool locates collar, and then engages its anchors (to hold tool stationary while doing next operations).
00:42 Sensor/milling module rotates to locate micro tubes and upper side of cable protector.
00:55 Milling tool penetrates tubing above clamp, mills down until contact with this and then rotates while cutting micro tubes.
01:15 Tool has released both anchors and moves up to cable clamp above where tubes were cut.
01:19 Tool locates collar, and again engages its anchors.
01:35 Sensor/milling module rotates to locate micro tubes and upper side of cable protector.
01:42 The mill penetrates the tubing (but do not extend far enough to damage/cut micro tubes), and cuts away a window in the production/injection tubing.
02:05 The gripper is extended from the tool, rotated followed by grabbing and pulling in the micro tubes.
02:14 The mill is again extended, to a depth sufficient to cut micro tubes. Tubes are cut.
02:24 The anchors has been released and the tool is pulled out of the wellbore, with the micro tubes held in place against the tool by the gripper.