Powered wellbore bailer
First Claim
Patent Images
1. A wellbore bailer, comprising:
- a rotary motor coupling;
a rotary downhole motor coupled to the rotary motor coupling, the rotary downhole motor comprising a downhole power unit configured to provide power to operate the rotary downhole motor in response to an actuation signal from an electrical conductor of a well wireline;
a cylinder having an open end;
a pump in the cylinder coupled to the rotary motor coupling and configured to pump fluid when rotated via the coupling, where the pump comprises a central shaft carrying a helical blade that extends outward from the shaft and defining a helical fluid chamber substantially the length of pump, and where the helical blade seals with an interior wall of the cylinder; and
a closure changeable between sealing and allowing flow through the open end.
2 Assignments
0 Petitions
Accused Products
Abstract
A wellbore bailer has a rotary motor coupling, a cylinder having an open end, and a pump in the cylinder coupled to the rotary motor coupling and configured to pump fluid when rotated via the coupling. A closure of the bailer is changeable between sealing and allowing flow through the open end.
-
Citations
19 Claims
-
1. A wellbore bailer, comprising:
-
a rotary motor coupling; a rotary downhole motor coupled to the rotary motor coupling, the rotary downhole motor comprising a downhole power unit configured to provide power to operate the rotary downhole motor in response to an actuation signal from an electrical conductor of a well wireline; a cylinder having an open end; a pump in the cylinder coupled to the rotary motor coupling and configured to pump fluid when rotated via the coupling, where the pump comprises a central shaft carrying a helical blade that extends outward from the shaft and defining a helical fluid chamber substantially the length of pump, and where the helical blade seals with an interior wall of the cylinder; and a closure changeable between sealing and allowing flow through the open end. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A method, comprising:
-
rotating a pump of a wellbore bailer with a downhole motor, the downhole motor comprising a downhole power unit that provides power to operate the downhole motor in response to an actuation signal from an electrical conductor of a well wireline, where rotating the pump of a wellbore bailer with the downhole motor comprises rotating a central shaft carrying a helical blade that extends outward from the shaft defining a helical fluid chamber substantially the length of the pump, and where the helical blade seals with an interior wall of a cylinder of the pump; in response to rotating the pump, pumping fluids between a wellbore and the helical fluid chamber, where pumping fluids between a wellbore and a chamber of the wellbore bailer comprises pumping fluids out of the chamber into the wellbore; and shifting the pump axially to break a frangible plate sealing the chamber. - View Dependent Claims (15)
-
-
16. A wellbore bailer, comprising:
-
a cylinder having a central bore, an open end, and a vent hole; a pump residing in the central bore of the cylinder, the pump comprising a rotatable central shaft carrying a helical blade that extends outward from the shaft and defining a helical fluid chamber substantially the length of pump, the helical blade sealing with an interior wall of the cylinder, a closure changeable between sealing and allowing flow through the open end of the cylinder; a rotary downhole motor operatively coupled to the shaft of the pump via a rotary motor coupling and configured to rotate the shaft to pump fluid and solids entrained in the fluid into the bore of the cylinder towards the vent hole, and further configured to rotate the shaft at a speed that allows the helical blade to cause the solids entrained in the fluid to settled out of the fluid within the helical fluid chamber as the fluid is pumped towards the vent hole. - View Dependent Claims (17, 18, 19)
-
Specification