US3651867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination well clean-out tool and jar
Assignee: Individual
•
Filing: 1970-10-05
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Granted: 1972-03-28
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Expires: 1990-10-05
Abstract
Abstract A well cleanout tool for retrieving junk or debris from the bottom of a borehole. The tool may be run into an oil well on the end of a wire line or sand line. Included within the tool are various chambers for retrieving or holding junk which flows thereinto when a valve is actuated. A combination valve actuator and jar mechanism is manipulated by the wire line and facilitates removal of the tool from the borehole when it becomes stuck therein. An improved releaf valve in the form of a resilient oneway check valve progressively reduces the internal pressure of the tool after it has been actuated and is traveling uphole. A second jar mechanism is optionally provided at the lower extremity of the tool.
Inventors
- 👤 August B Baumstimler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:33
CPC Classifications
E; E21; E21B; E21B31/00; E21B31/08
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
352 words
A well clean out tool having an inlet and an outlet; with the outlet being connected to a pipe forming chamber which is adapted to be supported by means such as a wire rope, comprising, in combination: means forming a passageway through said tool with said passageway connecting the inlet to the outlet; a combination jar and valve unit, a relief check valve, and a trap means, each spaced apart from one another and in communication with said passageway; said jar and valve unit including a valve element and a valve stem, means by which said stem is connected to move said valve element; a valve seat assembly having a face thereon which cooperates with said element to permit fluid flow through said passageway when moVed to a flow permitting position, and to normally prevent fluid flow when moved to a flow preventing position; said valve unit being disposed within said tool and near the outlet; said valve seat forming a portion of said passageway; a valve actuator means, said actuator means adapted to move the valve stem to cause the valve element to move from the closed to the opened position, and vice versa, in accordance with the relative position of the support means with respect to the tool; said actuator having means forming a flow path therethrough which is a continuation of said passageway; a jar means connected to said valve actuator means, said jar being in the form of a piston; a connecting rod, said piston being connected to said actuator and to said connecting rod; said connecting rod being affixed to said pipe forming chamber; means forming a cylinder between said valve unit and said outlet, stop means defining the length of said cylinder, said piston being reciprocatingly received within said cylinder and adapted to be reciprocated between the limits of said stop means to thereby provide a jarring action; whereby: the clean out tool can be set on bottom, thereby causing said valve unit to be moved to the opened position, and the clean out tool can be lifted to thereby cause a jarring action to occur.
Claim 2
Dependent Claim
352 words
A well clean out tool having an inlet and an outlet; with the outlet being connected to a pipe forming chamber which is adapted to be supported by means such as a wire rope, comprising, in combination: means forming a passageway through said tool with said passageway connecting the inlet to the outlet; a combination jar and valve unit, a relief check valve, and a trap means, each spaced apart from one another and in communication with said passageway; said jar and valve unit including a valve element and a valve stem, means by which said stem is connected to move said valve element; a valve seat assembly having a face thereon which cooperates with said element to permit fluid flow through said passageway when moVed to a flow permitting position, and to normally prevent fluid flow when moved to a flow preventing position; said valve unit being disposed within said tool and near the outlet; said valve seat forming a portion of said passageway; a valve actuator means, said actuator means adapted to move the valve stem to cause the valve element to move from the closed to the opened position, and vice versa, in accordance with the relative position of the support means with respect to the tool; said actuator having means forming a flow path therethrough which is a continuation of said passageway; a jar means connected to said valve actuator means, said jar being in the form of a piston; a connecting rod, said piston being connected to said actuator and to said connecting rod; said connecting rod being affixed to said pipe forming chamber; means forming a cylinder between said valve unit and said outlet, stop means defining the length of said cylinder, said piston being reciprocatingly received within said cylinder and adapted to be reciprocated between the limits of said stop means to thereby provide a jarring action; whereby: the clean out tool can be set on bottom, thereby causing said valve unit to be moved to the opened position, and the clean out tool can be lifted to thereby cause a jarring action to occur.
Claim 3
Dependent Claim
64 words
The combination of claim 1 wherein said relief check valve is disposed between said jar and said trap means, said relief check valve includes a cylindrical rubber member, apertures formed in said tool and communicating the interior of the tool so as to enable outward flow therefrom, said rubber cylinder being slidably received about said apertures to thereby form the recited relief check valve.
Claim 4
Dependent Claim
120 words
The combination of claim 1 wherein said relief check valve includes a portion of the passageway which is disposed in underlying relationship with respect to said valve element; said relief check valve being in the form of a sub-assembly which interconnects said valve assembly to said trap means; said sub-assembly having a circumferentially extending bore defined by two spaced apart shoulders, means forming apertures through said sub-assembly for enabling flow of fluid from the interior of the tool with said apertures being spaced apart from said bore, said rubber cylinder having an inside peripheral wall surface which is slidably received over the apertured portion of said sub-assembly and further including an outwardly directed enlargement which is received within said bore.
Claim 5
Dependent Claim
52 words
The combination defined in claim 1 wherein said trap means includes a check valve located within said passageway and spaced apart from and below said relief check valve so as to enable flow of fluid and debris from said inlet toward said outlet while precluding flow of fluid in an opposite direction.
Claim 6
Dependent Claim
77 words
The combination of claim 4 and further including a junk basket spaced apart from said trap means to thereby provide a junk containing chamber between said junk basket and said trap means, a second debris containing chamber between said trap and said relief check valve, a third chamber between said relief check valve and the valve unit, and another chamber located in the upper extremity of the tool; each recited chamber forming a portion of said passageway.
Claim 7
Dependent Claim
29 words
The combination of claim 1 wherein said cylinder and said connecting rod are of a length which provides a range of between 6 to 18 inches of piston travel.
Claim 8
Dependent Claim
22 words
The combination of claim 1 and further including means forming a second jar which is interposed between said trap and said inlet.
Claim 9
Dependent Claim
59 words
The combination of claim 1 wherein said relief check valve is an elongated cylinder of rubber having means by which it is attached to a marginal length of the outside peripheral surface of the tool, means forming an aperture through a wall of the tool; said aperture being aligned with the inside peripheral surface of said cylinder of rubber.
Claim 10
Dependent Claim
42 words
The combination of claim 1, and further including means fOrming a passageway through a side wall of said tool near the upper stop means to enable fluid to flow outwardly from said cylinder as said piston is reciprocated in an upward direction.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-28 | 1975-09-27 | 1976-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-28 | 1979-09-27 | 1980-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-28 | 1983-09-27 | 1984-03-28 | $7700.00 | Window Closed / Lapsed |