US3560060A - Rod guide and centralizer - Google Patents
Rod guide and centralizer Download PDFInfo
- Publication number
- US3560060A US3560060A US784667A US3560060DA US3560060A US 3560060 A US3560060 A US 3560060A US 784667 A US784667 A US 784667A US 3560060D A US3560060D A US 3560060DA US 3560060 A US3560060 A US 3560060A
- Authority
- US
- United States
- Prior art keywords
- tubing
- rod
- centralizer
- rod guide
- rods
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000004814 polyurethane Substances 0.000 abstract description 10
- 229920002635 polyurethane Polymers 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000012530 fluid Substances 0.000 abstract description 5
- 238000005086 pumping Methods 0.000 abstract description 5
- 239000007767 bonding agent Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000003129 oil well Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 241001508691 Martes zibellina Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1071—Wear protectors; Centralising devices, e.g. stabilisers specially adapted for pump rods, e.g. sucker rods
Definitions
- the present invention pertains to a polyurethane sucker rod guide and centralizer for use in production tubing and particularly plastic-lined tubing to permit low friction engagement between the sucker rod guides and the tubing at those points along the string of sucker rods Where engagement between such rods and tubing occur to provide a minimum of wear and damage to the plastic coated inner surface of the tubing.
- sucker rods lengths of solid rods, known as sucker rods, are coupled together so as to extend down into a string of production tubing for connecting mechanical pumping equipment at the surface to a well pump disposed in the well.
- sucker rod string is reciprocated in the tubing to actuate the pump for pumping well fluids upwardly through the production tubing to the surface
- string of sucker rods normally engages the inner surface of the tubing at various spaced points because, more often than not, the string of tubing and the well bore are crooked rather than straight.
- the engagement by the reciprocating sucker rods with the inner surface of the tubing at various points causes wear on the rods and the tubing when the rods are reciprocated therein.
- the present invention pertains :to a polyurethane rod guide and centralizer which is secured to a sucker rod and which comprises a longitudinally extending cylindrical body having annular surfaces at its opposite ends tapered inwardly toward the rod on which a rod guide is carried and which includes a plurality of circumferentially spaced longitudinally extending flutes or channels which are proyided in the outer surface of the cylindrical body and tralizer which reduces rod, coupling and tubing wear in sucker rod pumped wells and facilitates the use of internally coated tubing having a plastic lining in such wells.
- Another object of the present invention is to provide a new and improved sucker rod guide and centralizer wherein the guide comprises a longitudinally extending polyurethane body having an outer cylindrical surface and having annular surfaces at its opposite ends tapered inwardly toward the longitudinal axis of such cylindrical body.
- a plurality of circumferentially spaced longitudinally extending fiutes or channels are disposed at an angle to the longitudinal axis of the sucker rod guide or body and extefid longitudinally of the body from one of the annular tapered end surfaces to the other to provide relatively sharp edges for cutting or scrapping paraffin off of the inner -surface of the production tubing when such rod guides engage or rub against such tubing.
- FIG. Us a longitudinal view partly in section and partly in elevation showing the sucker rod guide and centralizer of the present invention positioned on a sucker rod disposed in a plastic-lined joint of tubing;
- FIG. 2 is a sectional view taken on line 2-2 of FIG. 1 showing -details of construction of the sucker rod guide and centralizer apparatus of the present invention.
- FIG. 3 is a sectional view taken on line 3--3 of FIG. 1 showing additional details of construction of the sucker rod guide apparatus of the present invention.
- the sucker rod guide and centralizer apparatus of the present invention is designated generally G and is shown mounted on a solid sucker rod 4 that extends generally axially of the length of tubing 6 which, as shown, is internally coated or linedlwith a plastic film 7.
- the sucker rod guide G is formed of polyurethane and comprises a generally cylindrical body 11 having annular tapered end portions 12 and 13 which are inclined inwardly toward the longitudinal axis of such cylindrical body. Laterally extending surfaces 19 and 20 which are transverse of the longitudinal axis of the body 11 are provided adjacent each end of the tapered surfaces 12 and 13.
- the body 11 is split longitudinally at 21 to enable the body to be installed on the rod 4 by spreading the split portion and inserting the rod 4 laterally into the central longitudinally extending opening or passage at 23 which extends axially through the body 11.
- An epoxy resin 20' or other suitable bonding agent is employed to glue or bond the facing edges of the split portion 21 together and for also securing the body 11 to the rod 4.
- circumferentially spaced flutes or channels 24 are provided on the exterior of the body 11 and extend longitudinally thereof to facilitate the flow of well fluids around the guide G through the tubing 6. As shown, such flutes or channels 24 extend from one tapered end portion 12 to the tapered end portion 13 at the opposite end of the body 11.
- the flutes or channels 24 are preferably formed with a bottom surface 26 and with side surfaces 27 and 28 being disposed at substantially right angles to such surface 26.
- the flutes 24 are disposed at an angle to the longitudinal axis of the body 11 so that the edges 29, formed at each end of the channels where the sides 27 and 28 intersect the tapered ends 12 and 13, present a sharp cutting edge which tends to cut or scrape any parafiin off of the inner surface of the tubing 6 when the guide body 11 bumps or rubs against such tubing.
- the body 11 may be atfixed to the sucker rod 6 or to the sucker rod box couplings at the ends of the rods (not shown) at desired intervals either by molding the body 11 onto the rod 6 or by securing the body 11 thereon with a suitable bonding agent such as epoxy resin. With the bodies 11 thus positioned on the sucker rod at longitudinally spaced intervals, the sucker rod string may be reciprocated in the tubing 6 with a minimum of rubbing or abrasion between the inner surface of the tubing 6 and the rod string 4.
- polyurethane sucker rod guides G are chemically resistant to Well fluids and gases encountred in oil and gas wells as Well as to chemicals normally used in treating oil wells and that such polyurethane guide G does not produce a paraffin build up as parafiin does not readily adhere well to such polyurethane guides.
- a sucker rod guide and rod centralizer for use in plastic coated tubing comprising:
- said flutes including a flat bottom surface and a pair of circumferentially spaced side surfaces disposed at substantially right angles to said bottom surface and intersecting the outer cylindrical surface of said body;
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
A POLYURETHANE ROD GUIDE AND CENTRALIZER FOR USE ON SUCKER RODS EXTENDING LONGITUDINALLY THROUGH PRODUCTION TUBING SUCH AS US USED IN PUMPING FLUIDS TO THE SURFACE IN OIL WELLS WHEREIN THE ROD GUIDE AND CENTRALIZER SURROUND THE ROD TO POSITION IT GENERALLY AXIALLY OF THE TUBING TO PREVENT ENGAGEMENT OF THE ROD WITH THE TUBING WHEN SUCH RODS ARE RECIPROCATED THEREIN FOR ACTUATING AS WELL PUMP CONNECTED TO THE SUCKER RODS.
Description
Feb. 2, 1971 N. MORRIS ROD GUIDE AND CENTRALIZER Filed bee. 18. 1.968
M0 f7 J INVENTOR 71 f 0 6 A -iQKQxAQAAQ 7 i: Ii ...i| lllllll 0 4 a a ATTORNEYS United States Patent Oifice 3,560,060 Patented Feb. 2, 1971 3,560,060 ROD GUIDE AND CENTRALIZER Nate Morris, 10234 Metronome, Houston, Tex. 77042 Filed Dec. 18, 1968, Ser. No. 784,667 Int. Cl. E21b 17/10; F16c N26 US. Cl. 308-4 1 Claim ABSTRACT OF THE DISCLOSURE A polyurethane rod guide and centralizer for use on sucker rods extending longitudinally through production tubing such as is used in pumping fluids to the surface in oil wells wherein the rod guide and centralizer surround the rod to position it generally axially of the tubing to prevent engagement of the rods with the tubing when such rods are reciprocated therein for actuating as well pump connected to the sucker rods.
BACKGROUND OF THE INVENTION (1) Field of the invention The present invention pertains to a polyurethane sucker rod guide and centralizer for use in production tubing and particularly plastic-lined tubing to permit low friction engagement between the sucker rod guides and the tubing at those points along the string of sucker rods Where engagement between such rods and tubing occur to provide a minimum of wear and damage to the plastic coated inner surface of the tubing.
(2) Description of the prior art In mechanical oil well pumping apparatus, lengths of solid rods, known as sucker rods, are coupled together so as to extend down into a string of production tubing for connecting mechanical pumping equipment at the surface to a well pump disposed in the well. As the sucker rod string is reciprocated in the tubing to actuate the pump for pumping well fluids upwardly through the production tubing to the surface, such string of sucker rods normally engages the inner surface of the tubing at various spaced points because, more often than not, the string of tubing and the well bore are crooked rather than straight. The engagement by the reciprocating sucker rods with the inner surface of the tubing at various points causes wear on the rods and the tubing when the rods are reciprocated therein. Various rod guides have been suggested to position the sucker rod string so as to minimize engagement between the sucker rods and the tubing; however, the rod guides frequently cause wear and are particularly troublesome when employed in a tubing string that is internally coated or lined with a plastic film which is provided to inhibit corrosion of the tubing.
SUMMARY The present invention pertains :to a polyurethane rod guide and centralizer which is secured to a sucker rod and which comprises a longitudinally extending cylindrical body having annular surfaces at its opposite ends tapered inwardly toward the rod on which a rod guide is carried and which includes a plurality of circumferentially spaced longitudinally extending flutes or channels which are proyided in the outer surface of the cylindrical body and tralizer which reduces rod, coupling and tubing wear in sucker rod pumped wells and facilitates the use of internally coated tubing having a plastic lining in such wells.
Another object of the present invention is to provide a new and improved sucker rod guide and centralizer wherein the guide comprises a longitudinally extending polyurethane body having an outer cylindrical surface and having annular surfaces at its opposite ends tapered inwardly toward the longitudinal axis of such cylindrical body. A plurality of circumferentially spaced longitudinally extending fiutes or channels are disposed at an angle to the longitudinal axis of the sucker rod guide or body and extefid longitudinally of the body from one of the annular tapered end surfaces to the other to provide relatively sharp edges for cutting or scrapping paraffin off of the inner -surface of the production tubing when such rod guides engage or rub against such tubing.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. Us a longitudinal view partly in section and partly in elevation showing the sucker rod guide and centralizer of the present invention positioned on a sucker rod disposed in a plastic-lined joint of tubing;
FIG. 2 is a sectional view taken on line 2-2 of FIG. 1 showing -details of construction of the sucker rod guide and centralizer apparatus of the present invention; and
FIG. 3 is a sectional view taken on line 3--3 of FIG. 1 showing additional details of construction of the sucker rod guide apparatus of the present invention.
DESCRIPTION OF THE PREFERRED EMBODIMENT Briefly, as shown in FIG. 1 of the drawings, the sucker rod guide and centralizer apparatus of the present invention is designated generally G and is shown mounted on a solid sucker rod 4 that extends generally axially of the length of tubing 6 which, as shown, is internally coated or linedlwith a plastic film 7. The sucker rod guide G is formed of polyurethane and comprises a generally cylindrical body 11 having annular tapered end portions 12 and 13 which are inclined inwardly toward the longitudinal axis of such cylindrical body. Laterally extending surfaces 19 and 20 which are transverse of the longitudinal axis of the body 11 are provided adjacent each end of the tapered surfaces 12 and 13. The body 11 is split longitudinally at 21 to enable the body to be installed on the rod 4 by spreading the split portion and inserting the rod 4 laterally into the central longitudinally extending opening or passage at 23 which extends axially through the body 11. An epoxy resin 20' or other suitable bonding agent is employed to glue or bond the facing edges of the split portion 21 together and for also securing the body 11 to the rod 4.
circumferentially spaced flutes or channels 24 are provided on the exterior of the body 11 and extend longitudinally thereof to facilitate the flow of well fluids around the guide G through the tubing 6. As shown, such flutes or channels 24 extend from one tapered end portion 12 to the tapered end portion 13 at the opposite end of the body 11.
The flutes or channels 24 are preferably formed with a bottom surface 26 and with side surfaces 27 and 28 being disposed at substantially right angles to such surface 26.
It will be noted that the flutes 24 are disposed at an angle to the longitudinal axis of the body 11 so that the edges 29, formed at each end of the channels where the sides 27 and 28 intersect the tapered ends 12 and 13, present a sharp cutting edge which tends to cut or scrape any parafiin off of the inner surface of the tubing 6 when the guide body 11 bumps or rubs against such tubing.
In using the polyurethane sucker rod guide and centralizer of the present invention, it will be appreciated that the body 11 may be atfixed to the sucker rod 6 or to the sucker rod box couplings at the ends of the rods (not shown) at desired intervals either by molding the body 11 onto the rod 6 or by securing the body 11 thereon with a suitable bonding agent such as epoxy resin. With the bodies 11 thus positioned on the sucker rod at longitudinally spaced intervals, the sucker rod string may be reciprocated in the tubing 6 with a minimum of rubbing or abrasion between the inner surface of the tubing 6 and the rod string 4. Also, it will be appreciated that the polyurethane sucker rod guides G are chemically resistant to Well fluids and gases encountred in oil and gas wells as Well as to chemicals normally used in treating oil wells and that such polyurethane guide G does not produce a paraffin build up as parafiin does not readily adhere well to such polyurethane guides.
The foregoing disclosure and description of the invention are illustrative and explanatory thereof, and various changes in the size, shape, and materials as well as in the details of the illustrated construction may be made within the scope of the appended claim Without departing from the spirit of the invention.
What is claimed is:
1. A sucker rod guide and rod centralizer for use in plastic coated tubing comprising:
(a) a body having a cylindrical outer surface extending longitudinally thereof;
(b) an annular end surface at each end of such cylindrical outer surface tapered inwardly toward the longitudinal axis of such cylindrical body;
(0) a plurality of circumferentially spaced longitudinally extending flutes formed in said body, said flutes being disposed at an angle to the longitudinal axis of said body and communicating the tapered annular end surfaces at the opposite ends of said body;
(d) said flutes including a flat bottom surface and a pair of circumferentially spaced side surfaces disposed at substantially right angles to said bottom surface and intersecting the outer cylindrical surface of said body;
(e) said body being split longitudinally along the bottom surface of one of said flutes; and
(f) a suitable bonding agent bonding the faces of the split together and securing the body on the rod.
References Cited UNITED STATES PATENTS 2,690,934 10/1954 Holcombe 3084 3,049,382 8/1962 Ell 3084 3,360,846 l/l968 Schellstede et al. 166241X 3,414,337 12/1968 Sable 308-4 MANUEL A. ANTONAKAS, Primary Examiner US. Cl. X.R.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US78466768A | 1968-12-18 | 1968-12-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3560060A true US3560060A (en) | 1971-02-02 |
Family
ID=25133159
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US784667A Expired - Lifetime US3560060A (en) | 1968-12-18 | 1968-12-18 | Rod guide and centralizer |
Country Status (1)
Country | Link |
---|---|
US (1) | US3560060A (en) |
Cited By (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3948575A (en) * | 1974-10-24 | 1976-04-06 | Rosser Eugene P | Drill pipe and drill collar containing molded casing protector and method of protecting casing therewith |
US3982606A (en) * | 1975-01-22 | 1976-09-28 | Mobil Oil Corporation | Acoustical logging apparatus having signal delay means |
FR2388981A1 (en) * | 1977-04-29 | 1978-11-24 | Sandvik Ab | DRILLING DEVICE |
US4275935A (en) * | 1979-07-17 | 1981-06-30 | American Coldset Corp. | Drilling stabilizer |
US4378852A (en) * | 1981-04-09 | 1983-04-05 | Garrett William R | Wedge lock stabilizer |
US4640349A (en) * | 1985-06-14 | 1987-02-03 | Allen And Bennett, Inc. | Flexible sucker rod unit |
US4668117A (en) * | 1986-04-01 | 1987-05-26 | Black Gold Pump & Supply, Inc. | Rod coupling with mounted guide |
US4877386A (en) * | 1988-12-20 | 1989-10-31 | J.M. Huber Corporation | Automated sucker rod cleaning apparatus |
US5191938A (en) * | 1991-12-16 | 1993-03-09 | Sable Donald E | Rod guide assembly and method of its installation on a rod shank |
US5363931A (en) * | 1993-07-07 | 1994-11-15 | Schlumberger Technology Corporation | Drilling stabilizer |
US5372192A (en) * | 1993-05-07 | 1994-12-13 | Bitting; George C. | Drag block for increasing the fluid resistance of well production tubing inadvertently dropped in a cased hole of an oil or gas well |
WO1996000834A1 (en) * | 1993-05-07 | 1996-01-11 | Bitting George C | Drag block for increasing the fluid resistance in a well production tubing |
US5631563A (en) * | 1994-12-20 | 1997-05-20 | Schlumbreger Technology Corporation | Resistivity antenna shield, wear band and stabilizer assembly for measuring-while-drilling tool |
US5803193A (en) * | 1995-10-12 | 1998-09-08 | Western Well Tool, Inc. | Drill pipe/casing protector assembly |
US5873157A (en) * | 1994-05-31 | 1999-02-23 | Flow Control Equipment Co. | Field installable rod guide and method |
US6152223A (en) * | 1998-09-14 | 2000-11-28 | Norris Sucker Rods | Rod guide |
US20050084337A1 (en) * | 2003-10-20 | 2005-04-21 | Caldwell Christopher S. | Shrink fit centralizer assembly and method |
CN102031933B (en) * | 2009-09-24 | 2013-03-13 | 江苏宏泰石化机械有限公司 | Serial anti-fall centralizer |
US8701759B1 (en) | 2013-03-14 | 2014-04-22 | Summit Energy Services, Inc. | Casing centralizer |
US10722871B2 (en) | 2016-03-22 | 2020-07-28 | Haldor Topsøe A/S | Sulfide-based alkane dehydrogenation catalysts |
US11261673B2 (en) * | 2019-05-15 | 2022-03-01 | Black Mamba Rod Lift Llc | Stabilizer for inhibiting sucker rod buckling during compression moments in artificial lift wells |
USD954754S1 (en) * | 2020-02-28 | 2022-06-14 | Cobalt Extreme Pty Ltd | Rod coupler |
US20220268109A1 (en) * | 2020-05-16 | 2022-08-25 | Black Mamba Rod Lift, LLC | Stabilizer for inhibiting sucker rod buckling during compression moments in artificial lift wells |
US11572740B2 (en) * | 2013-11-29 | 2023-02-07 | Welltec Oilfield Solutions Ag | Downhole production casing string |
-
1968
- 1968-12-18 US US784667A patent/US3560060A/en not_active Expired - Lifetime
Cited By (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3948575A (en) * | 1974-10-24 | 1976-04-06 | Rosser Eugene P | Drill pipe and drill collar containing molded casing protector and method of protecting casing therewith |
US3982606A (en) * | 1975-01-22 | 1976-09-28 | Mobil Oil Corporation | Acoustical logging apparatus having signal delay means |
FR2388981A1 (en) * | 1977-04-29 | 1978-11-24 | Sandvik Ab | DRILLING DEVICE |
US4275935A (en) * | 1979-07-17 | 1981-06-30 | American Coldset Corp. | Drilling stabilizer |
US4378852A (en) * | 1981-04-09 | 1983-04-05 | Garrett William R | Wedge lock stabilizer |
US4640349A (en) * | 1985-06-14 | 1987-02-03 | Allen And Bennett, Inc. | Flexible sucker rod unit |
US4668117A (en) * | 1986-04-01 | 1987-05-26 | Black Gold Pump & Supply, Inc. | Rod coupling with mounted guide |
US4877386A (en) * | 1988-12-20 | 1989-10-31 | J.M. Huber Corporation | Automated sucker rod cleaning apparatus |
US5191938A (en) * | 1991-12-16 | 1993-03-09 | Sable Donald E | Rod guide assembly and method of its installation on a rod shank |
US5372192A (en) * | 1993-05-07 | 1994-12-13 | Bitting; George C. | Drag block for increasing the fluid resistance of well production tubing inadvertently dropped in a cased hole of an oil or gas well |
WO1996000834A1 (en) * | 1993-05-07 | 1996-01-11 | Bitting George C | Drag block for increasing the fluid resistance in a well production tubing |
US5363931A (en) * | 1993-07-07 | 1994-11-15 | Schlumberger Technology Corporation | Drilling stabilizer |
US5873157A (en) * | 1994-05-31 | 1999-02-23 | Flow Control Equipment Co. | Field installable rod guide and method |
US5631563A (en) * | 1994-12-20 | 1997-05-20 | Schlumbreger Technology Corporation | Resistivity antenna shield, wear band and stabilizer assembly for measuring-while-drilling tool |
US5803193A (en) * | 1995-10-12 | 1998-09-08 | Western Well Tool, Inc. | Drill pipe/casing protector assembly |
US6152223A (en) * | 1998-09-14 | 2000-11-28 | Norris Sucker Rods | Rod guide |
US20050084337A1 (en) * | 2003-10-20 | 2005-04-21 | Caldwell Christopher S. | Shrink fit centralizer assembly and method |
US7393158B2 (en) * | 2003-10-20 | 2008-07-01 | Rti Energy Systems, Inc. | Shrink for centralizer assembly and method |
CN102031933B (en) * | 2009-09-24 | 2013-03-13 | 江苏宏泰石化机械有限公司 | Serial anti-fall centralizer |
US8701759B1 (en) | 2013-03-14 | 2014-04-22 | Summit Energy Services, Inc. | Casing centralizer |
US9057229B2 (en) | 2013-03-14 | 2015-06-16 | Summit Energy Services, Inc. | Casing centralizer |
US11572740B2 (en) * | 2013-11-29 | 2023-02-07 | Welltec Oilfield Solutions Ag | Downhole production casing string |
US10722871B2 (en) | 2016-03-22 | 2020-07-28 | Haldor Topsøe A/S | Sulfide-based alkane dehydrogenation catalysts |
US11261673B2 (en) * | 2019-05-15 | 2022-03-01 | Black Mamba Rod Lift Llc | Stabilizer for inhibiting sucker rod buckling during compression moments in artificial lift wells |
USD954754S1 (en) * | 2020-02-28 | 2022-06-14 | Cobalt Extreme Pty Ltd | Rod coupler |
US20220268109A1 (en) * | 2020-05-16 | 2022-08-25 | Black Mamba Rod Lift, LLC | Stabilizer for inhibiting sucker rod buckling during compression moments in artificial lift wells |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3560060A (en) | Rod guide and centralizer | |
US2336338A (en) | Apparatus for drilling bores deviating from existing well bores | |
US3343890A (en) | Apparatus for reducing casing wear during drilling operations | |
US5511619A (en) | Polymer liners in rod pumping wells | |
US4938299A (en) | Flexible centralizer | |
US3528499A (en) | Plastic floating drill pipe and sucker rod protector | |
US20230272695A1 (en) | Cleanout tools and related methods of operation | |
US3475039A (en) | Universal ball joint for pressurized flow lines | |
US20090242193A1 (en) | Downhole Tools | |
US20020139537A1 (en) | Method for enabling movement of a centralized pipe through a reduced diameter restriction and apparatus therefor | |
US4182537A (en) | Anti-friction sucker rod guide assembly | |
US6562401B2 (en) | Method for making a stand-off device to prevent an oilfield tubular from contacting the side of the wellbore | |
US3747700A (en) | Oil well mandrel and stabilizing sleeve assembly | |
US1876627A (en) | Multiple pipe unit adaptable to the drilling and pumping arts | |
GB2261238A (en) | Turbine vibrator assembly | |
US20120073803A1 (en) | Dual rotary centralizer for a borehole | |
CA2486177C (en) | Tubular goods and liners | |
US3762472A (en) | Casing stand-off band for use during the running and cementing of casing in wellbores | |
USRE31016E (en) | Anti-friction sucker rod guide assembly | |
US2652231A (en) | Pumping assembly | |
US4640349A (en) | Flexible sucker rod unit | |
US3587740A (en) | Apparatus for use in deviated wells | |
US6516877B2 (en) | Sucker rod protector | |
US3658126A (en) | Servicing wells | |
US3645587A (en) | Drill string member and method for manufacture |