Back to results
US 6,883,612 B2Granted
Rod pump
AssigneeWeatherford/Lamb, Inc.
InventorsJoel Ferguson, Doug Verner, Brian Waterhouse
Life of this patent
Estimating the term…
Abstract
A rod pump for use in a wellbore is provided. In one embodiment, the rod pump comprises a traveling valve cage attachable to a rod string, the traveling valve cage having a first latch component operatively connected thereto; and a pump housing having a second latch component operatively connected thereto, wherein the first latch component is disposable in latching engagement with the second latch component. The first latch component comprises a surface having a set of grooves, and the second latch component comprises one or more pins.
Claims43
A rod pump for lifting fluids from a wellbore, comprising:
- a traveling valve cage attachable to a rod string, the traveling valve cage having a first latch component operatively connected thereto;
- and
- a pump housing having a second latch component operatively connected thereto, wherein the first latch component is disposable in latching engagement with the second latch component and wherein one of the first and second latch components includes one or more slanted surfaces for rotating the traveling valve cage into one or more stop positions as the traveling cage is moved axially in the pump housing.
A rod pump for lifting fluids from a wellbore, comprising:
- a traveling valve cage attachable to a rod string, the traveling valve cage having a first latch component operatively connected thereto;
- and
- a pump housing having a second latch component operatively connected thereto, wherein the first latch component is disposable in latching engagement with the second latch component, wherein the first latch component comprises one or more pins, wherein the set of grooves define an entry groove and a locking groove, and wherein the entry groove includes a first portion substantially parallel to an axis of the traveling valve cage and a second slanted portion extending to a first upper stop.
A rod pump for lifting fluids from a wellbore, comprising:
- a traveling valve cage attachable to a rod string, the traveling valve cage having a first latch component operatively connected therto;
- and
- a pump housing having a second latch component operatively connected thereto, wherein the first latch component is disposable in latching engagement with the second latch component, wherein the first latch component comprises a collet having a plurality of flexible body portions and a plurality of clip ends and the second latch component comprises a collet latch.
A reciprocating lift system, comprising:
- a surface pumping unit;
- a rod string disposed in connection with the surface pumping unit;
- and
- a pump disposed in connection with the rod string, the pump comprising:
- a traveling valve cage attachable to the rod string, the traveling valve cage having a first latch component operatively connected thereto;
- and
- a pump housing having a second latch component operatively connected thereto, wherein the first latch component is disposable in latching engagement with the second latch component and wherein one of the first and second latch components includes one or more slanted surfaces for rotating the traveling valve cage into one or more stop positions as the traveling cage is moved axially in the pump housing.
4 more elements
A reciprocating lift system, comprising:
- a surface pumping unit;
- a rod string disposed in connection with the surface pumping unit;
- and
- a pump disposed in connection with the rod string, the pump comprising:
- a traveling valve cage attachable to the rod string, the traveling valve cage having a first latch component operatively connected thereto;
- and
- a pump housing having a second latch component operatively connected thereto, wherein the first latch component is disposable in latching engagement with the second latch component, wherein the first latch component comprises a surface having a set of grooves and the second latch component comprises one or more pins, wherein the set of grooves define an entry groove and a locking groove, and wherein the entry groove includes a first portion substantially parallel to an axis of the traveling valve cage and a second slanted portion extending to a first upper stop.
4 more elements
A latch assembly for a rod pump, comprising:
- a first latch component operatively connected to a traveling valve of the rod pump;
- and
- a second latch component operatively connected to a pump housing of the rod pump, wherein the first latch component is disposable in latching engagement with the second latch component and wherein one of the first and second latch components includes one or more slanted surfaces for rotating the traveling valve cage into one or more stop positions as the traveling cage is moved axially in the pump housing.
A pump for lifting fluids from a wellbore comprising:
- a movable portion being movable in relation to a stationary portion, the movable portion having a first latch member and the stationary portion having a second latch member, wherein the first latch member disposable in engagement with the second latch member to limit relative movement between the movable portion and the stationary portion and wherein one of the first and second latch members includes one or more slanted surfaces for rotating the movable portion into one or more stop positions as the movable portion is moved axially in relation to the stationary portion.
A method for operating a rod pump, comprising:
- lowering a traveling valve cage attachable to a rod string to engage a first latch component operatively connected the traveling valve cage against a second latch component operatively connected to a pump housing;
- and
- moving the traveling valve cage axially in the pump housing, whereby the traveling valve cage is rotated into one or more stop positions by the axial movement.
Dependencies are inferred from the claim text.