US2636564A - Rib type casing centralizer - Google Patents

Rib type casing centralizer Download PDF

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US2636564A
US2636564A US269441A US26944152A US2636564A US 2636564 A US2636564 A US 2636564A US 269441 A US269441 A US 269441A US 26944152 A US26944152 A US 26944152A US 2636564 A US2636564 A US 2636564A
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casing
hole
casing centralizer
rib type
type casing
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US269441A
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Kluck Louis
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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
    • E21B17/1014—Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well
    • E21B17/1021—Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well with articulated arms or arcuate springs
    • E21B17/1028—Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well with articulated arms or arcuate springs with arcuate springs only, e.g. baskets with outwardly bowed strips for cementing operations

Definitions

  • This invention relates to new and useful improvements in casing centralizers and the primary object of the present invention is to provide a casing centralizer having novel and improved features over that disclosed in my pending application Serial No. 140,677, filed January 26, 1950.
  • Another important object of the present invention is to provide a casing centralizer in cluding a plurality of circumferentially spaced leaf springs having central bowed portions that will yieldingly engage the wall of a hole to retain a casing centered within the hole.
  • a further object of the present invention is to provide a casing centralizer of the aforementioned character that is quickly and. readily applied about a casing to center the casing in a hole as the casing is permanently fixed in the hole by cement.
  • a still further aim of the present invention is to provide a rib type casing centralizer that is simple and practical in construction, strong and reliable in use, inexpensive to manufacture and install, and otherwise well adapted for the purposes for which the same is intended.
  • Figure 1 is a sectional view of a well hole and ShOWil'lg a casing centered within the hole by the present invention
  • Figure 2 is a perspective view of the present casing centralizer
  • Figure 3 is an enlarged horizontal sectional view taken substantially on the plane of section line 33 of Figure 1;
  • Figure l is an enlarged horizontal sectional view taken substantially on the plane of section line 3 i of Figure 1.
  • the numeral it comprises a cage member including upper and lower identical ring elements l2 and :4 that are connected by hollow, substantially channel-shaped, reinforcing and strengthening rib It.
  • the ribs iii are spaced circumferentially about the ring elements and the upper and lower smoothly rounded, preferably convex, ends l8 of the ribs are fixed by welding to the outer peripheries of the ring elements.
  • the lower enos or a plurality of circumferentially spaced leaf springs all are fixed by welding to the outer periphery of the lower ring element I l and the upper ends of the springs 20 are slidably received in circumferentially spaced channel-shaped guides 22 that are welded to the outer periphery of the upper ring element I2.
  • Each of the springs 26 is provided with a central bowed portion or concavo-convex portion 24 and these portions project radially outwardly beyond the ring elements.
  • the leaf springs 26 alternate with the ribs l6 so that the cage member ill will be uniformly strengthened.
  • the ribs It will prevent the springs from breaking since they will restrict the amount of tension placed on the springs.
  • An abutment ring 24 is positioned on the casing 0 above the cage member H] which is slipped on the casing above a joint J.
  • Nuts 26 are welded to diametrically opposites of the ring 24 and oppose apertures 28 in the ring 24.
  • Set screws 30 are threaded through the nuts and extend radially inwardly of the ring 24 to bite against the casing C and prevent shifting of the ring 24 on the casing.
  • the hump portions 24 will engage the wall of the hole to center the casing within the hole.
  • the ribs It will also center the casing within the hole. Then cement is poured in the hole about the casing to anchor the casing within the hole.
  • a casing centralizer comprising upper and lower ring elements, a plurality of circumferentially spaced hollow ribs terminally fixed to the outer peripheries of the ring elements and joining and strengthening the ring elements, a plurality of circumi'erentially spaced leaf springs having lower ends fixed to the outer periphery of the lower ring element and upper ends contacting the outer periphery of the upper ring element, said springs alternating with the ribs and having central bowed portions projecting outwardly beyond the ring elements, and a plurality of circumferentialiy spaced channel-shaped guides fixed to the outer periphery of the upper ring element and slidably receiving the upper ends of the springs.

Description

April 28, 1953 KLUK 2,636,564
RIB TYPE CASING CENTRALIZER Filed Feb. 1, 1952' Fig.2
/ m Q u Patented Apr. 28, 1953 UNITED STATES PATNT OFFICE RIB TYPE CASING CENTRALIZER Louis Kluck, Odessa, Tex.
Application February 1, 1952, Serial No. 269,441
1 Claim. 1
This invention relates to new and useful improvements in casing centralizers and the primary object of the present invention is to provide a casing centralizer having novel and improved features over that disclosed in my pending application Serial No. 140,677, filed January 26, 1950.
Another important object of the present invention is to provide a casing centralizer in cluding a plurality of circumferentially spaced leaf springs having central bowed portions that will yieldingly engage the wall of a hole to retain a casing centered within the hole.
A further object of the present invention is to provide a casing centralizer of the aforementioned character that is quickly and. readily applied about a casing to center the casing in a hole as the casing is permanently fixed in the hole by cement.
A still further aim of the present invention is to provide a rib type casing centralizer that is simple and practical in construction, strong and reliable in use, inexpensive to manufacture and install, and otherwise well adapted for the purposes for which the same is intended.
Other objects and advantages reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming part hereof, wherein like numerals refer to like parts throughout, and in which:
Figure 1 is a sectional view of a well hole and ShOWil'lg a casing centered within the hole by the present invention;
Figure 2 is a perspective view of the present casing centralizer;
Figure 3 is an enlarged horizontal sectional view taken substantially on the plane of section line 33 of Figure 1; and,
Figure l is an enlarged horizontal sectional view taken substantially on the plane of section line 3 i of Figure 1.
Referring now to the drawings in detail, wherein for the purpose of illustration, there is disclosed a preferred embodiment of the present invention, the numeral it comprises a cage member including upper and lower identical ring elements l2 and :4 that are connected by hollow, substantially channel-shaped, reinforcing and strengthening rib It.
The ribs iii are spaced circumferentially about the ring elements and the upper and lower smoothly rounded, preferably convex, ends l8 of the ribs are fixed by welding to the outer peripheries of the ring elements.
The lower enos or a plurality of circumferentially spaced leaf springs all are fixed by welding to the outer periphery of the lower ring element I l and the upper ends of the springs 20 are slidably received in circumferentially spaced channel-shaped guides 22 that are welded to the outer periphery of the upper ring element I2. Each of the springs 26 is provided with a central bowed portion or concavo-convex portion 24 and these portions project radially outwardly beyond the ring elements.
The leaf springs 26 alternate with the ribs l6 so that the cage member ill will be uniformly strengthened. The ribs It will prevent the springs from breaking since they will restrict the amount of tension placed on the springs.
An abutment ring 24 is positioned on the casing 0 above the cage member H] which is slipped on the casing above a joint J. Nuts 26 are welded to diametrically opposites of the ring 24 and oppose apertures 28 in the ring 24. Set screws 30 are threaded through the nuts and extend radially inwardly of the ring 24 to bite against the casing C and prevent shifting of the ring 24 on the casing.
As the casing is lowered into a well hole H the hump portions 24 will engage the wall of the hole to center the casing within the hole. The ribs It will also center the casing within the hole. Then cement is poured in the hole about the casing to anchor the casing within the hole.
Having described the invention, what is claimed as new is:
A casing centralizer comprising upper and lower ring elements, a plurality of circumferentially spaced hollow ribs terminally fixed to the outer peripheries of the ring elements and joining and strengthening the ring elements, a plurality of circumi'erentially spaced leaf springs having lower ends fixed to the outer periphery of the lower ring element and upper ends contacting the outer periphery of the upper ring element, said springs alternating with the ribs and having central bowed portions projecting outwardly beyond the ring elements, and a plurality of circumferentialiy spaced channel-shaped guides fixed to the outer periphery of the upper ring element and slidably receiving the upper ends of the springs.
LOUIS KLUCK.
References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,898,074 Bailey Feb. 21, 1933 2,058,103 Phipps Oct. 20, 1936 2,228,648 Welles Jan. 14, 1941 2,313,178 Spang Mar. 9. 1943 2,388,416 Johnson Nov. 6, 1945
US269441A 1952-02-01 1952-02-01 Rib type casing centralizer Expired - Lifetime US2636564A (en)

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2728399A (en) * 1953-12-10 1955-12-27 Kluck Louis Floating spring type casing centralizer
US2846016A (en) * 1954-03-19 1958-08-05 Huntsinger Associates Stop collar for well casing
US2871950A (en) * 1956-07-20 1959-02-03 Baker Oil Tools Inc Stop devices for well conduits
US2872226A (en) * 1955-12-02 1959-02-03 B And W Inc Stop collar for a well pipe
US2931440A (en) * 1956-03-15 1960-04-05 Schlumberger Well Surv Corp Centralizing means for borehole apparatus
US2962313A (en) * 1957-05-27 1960-11-29 Baker Oil Tools Inc Stop ring for well conduit
US3044554A (en) * 1959-02-13 1962-07-17 Kluck Louis Casing centralizer
US3282349A (en) * 1964-01-22 1966-11-01 Fenix & Scisson Inc Casing centralizer
US3312285A (en) * 1962-10-02 1967-04-04 B & W Inc Well pipe centralizer
US3556042A (en) * 1966-08-16 1971-01-19 Mark Tool Co Inc Centering device
US3575239A (en) * 1969-04-18 1971-04-20 B & W Inc Progressive centralizer
US3643739A (en) * 1966-09-06 1972-02-22 Weatherford Oil Tool Co Inc Centralizer
US3762472A (en) * 1972-07-24 1973-10-02 Gem Oil Tool Co Casing stand-off band for use during the running and cementing of casing in wellbores
US4984633A (en) * 1989-10-20 1991-01-15 Weatherford U.S., Inc. Nozzle effect protectors, centralizers, and stabilizers and related methods
US20090166027A1 (en) * 2007-12-27 2009-07-02 Ossama Ramzi Sehsah Wellbore pipe centralizer having increased restoring force and self-sealing capability

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1898074A (en) * 1930-08-21 1933-02-21 Carol Supplies Inc Antifriction bearing
US2058103A (en) * 1935-06-15 1936-10-20 L R Knowlton Circulation packer
US2228648A (en) * 1939-09-22 1941-01-14 Baker Oil Tools Inc Casing centralizer
US2313178A (en) * 1940-07-27 1943-03-09 Ferdinand J Spang Plug for oil and gas wells
US2388416A (en) * 1943-09-17 1945-11-06 Mont C Johnson Casing centering device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1898074A (en) * 1930-08-21 1933-02-21 Carol Supplies Inc Antifriction bearing
US2058103A (en) * 1935-06-15 1936-10-20 L R Knowlton Circulation packer
US2228648A (en) * 1939-09-22 1941-01-14 Baker Oil Tools Inc Casing centralizer
US2313178A (en) * 1940-07-27 1943-03-09 Ferdinand J Spang Plug for oil and gas wells
US2388416A (en) * 1943-09-17 1945-11-06 Mont C Johnson Casing centering device

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2728399A (en) * 1953-12-10 1955-12-27 Kluck Louis Floating spring type casing centralizer
US2846016A (en) * 1954-03-19 1958-08-05 Huntsinger Associates Stop collar for well casing
US2872226A (en) * 1955-12-02 1959-02-03 B And W Inc Stop collar for a well pipe
US2931440A (en) * 1956-03-15 1960-04-05 Schlumberger Well Surv Corp Centralizing means for borehole apparatus
US2871950A (en) * 1956-07-20 1959-02-03 Baker Oil Tools Inc Stop devices for well conduits
US2962313A (en) * 1957-05-27 1960-11-29 Baker Oil Tools Inc Stop ring for well conduit
US3044554A (en) * 1959-02-13 1962-07-17 Kluck Louis Casing centralizer
US3312285A (en) * 1962-10-02 1967-04-04 B & W Inc Well pipe centralizer
US3282349A (en) * 1964-01-22 1966-11-01 Fenix & Scisson Inc Casing centralizer
US3556042A (en) * 1966-08-16 1971-01-19 Mark Tool Co Inc Centering device
US3643739A (en) * 1966-09-06 1972-02-22 Weatherford Oil Tool Co Inc Centralizer
US3575239A (en) * 1969-04-18 1971-04-20 B & W Inc Progressive centralizer
US3762472A (en) * 1972-07-24 1973-10-02 Gem Oil Tool Co Casing stand-off band for use during the running and cementing of casing in wellbores
US4984633A (en) * 1989-10-20 1991-01-15 Weatherford U.S., Inc. Nozzle effect protectors, centralizers, and stabilizers and related methods
US20090166027A1 (en) * 2007-12-27 2009-07-02 Ossama Ramzi Sehsah Wellbore pipe centralizer having increased restoring force and self-sealing capability
US7708064B2 (en) * 2007-12-27 2010-05-04 At Balance Americas, Llc Wellbore pipe centralizer having increased restoring force and self-sealing capability
CN101932789B (en) * 2007-12-27 2013-06-19 普拉德研究及开发股份有限公司 Wellbore pipe centralizer having increased restoring force and self-sealing capability

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