Slickline or wireline run hydraulic motor driven mill
View Patent ↗A tool is run in with a bottom hole assembly that includes a seal and support within the tubing where a fish is to be milled. A ported sub allows pressurized fluid pumped from the surface to enter the bottom hole assembly above the sealed support location and to be directed to set an anchor and to a fluid driven motor such as a progressive cavity motor that is in turn connected milling tool at the rotor of the progressive cavity motor. The fluid exiting the stator goes through a debris removal device and can return to the surface through an annulus around the production tubing. A telescoping joint allows the mill to axially progress with a force applied to the fish generated by a tractor or a stack of Belleville washers.
1. A method of operating a tool in a borehole leading to a subterranean location, comprising:
delivering the tool to a first subterranean location at least in part on a cable;
pumping fluid into the borehole to pressurize at least a portion of the borehole;
using said pressure to operate said tool;
moving all of said tool to an axially spaced second subterranean location while using said pressure to operate said tool.
2. The method of claim 1 , comprising:
using a slickline or wireline as said cable.
3. A method of operating a tool in a borehole leading to a subterranean location, comprising:
delivering the tool to the subterranean location at least in part on a cable;
pumping fluid into the borehole to pressurize at least a portion of the borehole;
using said pressure to operate said tool;
moving said tool axially while using said pressure to operate said tool;
including a telescoping joint in a bottom hole assembly that includes said tool for said moving said tool axially.
4. The method of claim 3 , comprising:
biasing against said tool when said tool is operated.
5. The method of claim 3 , comprising:
extending said telescoping joint when said tool is operated.
6. The method of claim 5 , comprising:
using at least one spring for said biasing.
7. The method of claim 6 , comprising:
energizing said spring with pressure delivering said pumped fluid.
8. The method of claim 7 , comprising:
using a Belleville washer stack for said biasing.
9. The method of claim 3 , comprising:
associating a tractor with said telescoping joint to axially advance the tool when operating.
10. A method of operating a tool in a borehole leading to a subterranean location, comprising:
delivering the tool to the subterranean location at least in part on a cable;
pumping fluid into the borehole to pressurize at least a portion of the borehole;
using said pressure to operate said tool;
moving said tool axially while using said pressure to operate said tool;
using a mill as said tool for release of a fish at the subterranean location.
11. The method of claim 10 , comprising:
allowing the fish to drop in the borehole after release or grasping said fish for retrieval from the borehole after the fish is released.
12. The method of claim 10 , comprising:
using a washover mill for said tool;
capturing generated debris using the fluid pumped into the borehole through a debris removal tool mounted in a bottom hole assembly with said mill.
13. The method of claim 10 , comprising:
vibrating said mill using the fluid pumped into the borehole through a vibration tool mounted in a bottom hole assembly with said mill while in contact with the fish.
14. The method of claim 10 , comprising:
driving a motor operably connected to said mill with said pumping.
15. The method of claim 14 , comprising:
diverting said pumped fluid to said motor.
16. The method of claim 15 , comprising:
using a progressing cavity device as said motor.
17. The method of claim 15 , comprising:
directing fluid exhausted from said motor to a debris removal tool or a vibrator.
18. The method of claim 17 , comprising:
flowing said exhausted fluid through an annular space defined between production tubing and a surrounding tubular.
19. The method of claim 15 , comprising:
accomplishing said diverting with an exterior seal on said assembly.
20. The method of claim 19 , comprising:
actuating said seal to seal a portion of the borehole.
21. The method of claim 19 , comprising:
providing a seal bore a tubular string in which said fish is located; and
inserting said seal into said seal bore to accomplish said diverting.
22. The method of claim 19 , comprising:
providing a ported sub adjacent said seal; and
directing flow through said ported sub and into said motor.
23. The method of claim 19 , comprising:
providing a hydraulically actuated anchor in said assembly.
24. The method of claim 23 , comprising:
locating said anchor between said seal and said motor;
using said diverted fluid to actuate both said anchor and said motor.