Patent US3889579A successfully refreshed from Google Patents.
US3889579A
Expired / Lapsed
US
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Oil well pumping system having reinforced plastic sucker rod
Assignee: POLY TRUSIONS Inc
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Filing: 1974-01-07
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Granted: 1975-06-17
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Expires: 1994-01-07
Abstract
Abstract A system for pumping oil and a method for constructing a system in which a pump, disposed at the bottom of the well, is connected to the pump drive, at the top of the well, by a single length of reinforced plastic sucker rod having specific constructions and characteristics is disclosed.
Inventors
- 👤 Joseph W Wiechowski
- 👤 Delmar S Miller
- 👤 Richard C Kostner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:34
CPC Classifications
F; F04; F04B; F04B53/00; F04B53/14; F04B53/144
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
100 words
A pumping system for oil wells and the like which comprises a pump in a well near the bottom thereof, a pump drive near the top of the well, and a sucker rod drive connecting the drive to the pump, the improvement wherein: the sucker rod is of sufficient length to reach from the drive to the pump, said rod being constructed of a multiplicity of glass fibers bonded together into a semi-rigid rod by a set organic resin; and fittings affixed at the respective ends of the sucker rod for connection to the pump and to the drive respectively.
Claim 2
Dependent Claim
100 words
A pumping system for oil wells and the like which comprises a pump in a well near the bottom thereof, a pump drive near the top of the well, and a sucker rod drive connecting the drive to the pump, the improvement wherein: the sucker rod is of sufficient length to reach from the drive to the pump, said rod being constructed of a multiplicity of glass fibers bonded together into a semi-rigid rod by a set organic resin; and fittings affixed at the respective ends of the sucker rod for connection to the pump and to the drive respectively.
Claim 3
Dependent Claim
35 words
The system defined in claim 1 wherein the sucker rod comprises a single, continuous, semi-rigid Rod consisting essentially of generally parallel elongate glass fibers running lengthwise of the rod and resin bonding the fibers together.
Claim 4
Dependent Claim
70 words
The system defined in claim 2 wherein the sucker rod comprises a single, continuous, semi-rigid rod consisting essentially of generally parallel elongate glass fibers running longitudinally of the rod, thermoset resin bonding the fibers together, and a high density filler, said rod having a density of at least about 1 pound per foot and less than 4 pounds per foot sufficient to transmit energy from the drive to the pump.
Claim 5
Dependent Claim
49 words
The system defined in claim 2 wherein the sucker rod comprises a single, continuous, semi-rigid rod consisting essentially of generally parallel glass fibers running lengthwise of the rod and thermoset resin bonding the fibers together in a rod configuration having a passageway extending along the length of the rod.
Claim 6
Dependent Claim
60 words
The system defined in claim 4 wherein the sucker rod comprises a dense filler material in said passageway for at least a portion of the length of the rod of give the rod an average density of greater than 1 pound per foot and less than about 4 pounds per foot sufficient to transmit pumping force efficiently to the pump.
Claim 7
Dependent Claim
33 words
The system defined in claim 4 wherein the sucker rod comprises means in the passageway for permitting communication of sensing signals or control signals between the pump and a station outside the well.
Claim 8
Dependent Claim
19 words
The system defined in claim 2 wherein the sucker rod further comprises at least one sheath enclosing the rod.
Claim 9
Dependent Claim
40 words
The system defined in claim 7 wherein the sheath comprises a multiplicity of glass fibers having a substantial transverse directional component bonded together to enclose the rod to thereby increase the delamination resistance and abrasion resistance of the sucker rod.
Claim 10
Dependent Claim
42 words
The system defined in claim 8 wherein the sheath comprises a multiplicity of glass fibers running helically around the rod along the length thereof, and thermoset resin bonding said helically extending fibers together in at least one continuous sheath enclosing the rod.
Claim 11
Dependent Claim
27 words
The system defined in claim 8 including a sheath which is an extruded, flexible polymer layer having greater abrasion resistance than the resin bonded glass fiber material.
Claim 12
Dependent Claim
45 words
The system defined in claim 8 wherein the sheath comprises a multiplicity of glass fibers woven to form a fabric sheath around the rod along the length thereof, and thermoset resin bonding said fiber sheath together in at least one continuous sheath enclosing the rod.
Claim 13
Dependent Claim
27 words
The system defined in claim 11 including a sheath which is an extruded, flexible polymer layer having greater abrasion resistance than the resin bonded glass fiber material.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-16 | 1978-12-16 | 1979-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-16 | 1982-12-16 | 1983-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-16 | 1986-12-16 | 1987-06-17 | $7700.00 | Window Closed / Lapsed |