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Publication numberUS2636564 A
Publication typeGrant
Publication dateApr 28, 1953
Filing dateFeb 1, 1952
Priority dateFeb 1, 1952
Publication numberUS 2636564 A, US 2636564A, US-A-2636564, US2636564 A, US2636564A
InventorsLouis Kluck
Original AssigneeLouis Kluck
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Rib type casing centralizer
US 2636564 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

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

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1898074 *Aug 21, 1930Feb 21, 1933Carol Supplies IncAntifriction bearing
US2058103 *Jun 15, 1935Oct 20, 1936L R KnowltonCirculation packer
US2228648 *Sep 22, 1939Jan 14, 1941Baker Oil Tools IncCasing centralizer
US2313178 *Jul 27, 1940Mar 9, 1943Spang Ferdinand JPlug for oil and gas wells
US2388416 *Sep 17, 1943Nov 6, 1945Johnson Mont CCasing centering device
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2728399 *Dec 10, 1953Dec 27, 1955Louis KluckFloating spring type casing centralizer
US2846016 *Mar 19, 1954Aug 5, 1958Huntsinger AssociatesStop collar for well casing
US2871950 *Jul 20, 1956Feb 3, 1959Baker Oil Tools IncStop devices for well conduits
US2872226 *Dec 2, 1955Feb 3, 1959B And W IncStop collar for a well pipe
US2931440 *Mar 15, 1956Apr 5, 1960Schlumberger Well Surv CorpCentralizing means for borehole apparatus
US2962313 *May 27, 1957Nov 29, 1960Baker Oil Tools IncStop ring for well conduit
US3044554 *Feb 13, 1959Jul 17, 1962Louis KluckCasing centralizer
US3282349 *Jan 22, 1964Nov 1, 1966Fenix & Scisson IncCasing centralizer
US3312285 *Feb 2, 1966Apr 4, 1967B & W IncWell pipe centralizer
US3556042 *Aug 16, 1966Jan 19, 1971Mark Tool Co IncCentering device
US3575239 *Apr 18, 1969Apr 20, 1971B & W IncProgressive centralizer
US3643739 *Sep 6, 1966Feb 22, 1972Weatherford Oil Tool Co IncCentralizer
US3762472 *Jul 24, 1972Oct 2, 1973Gem Oil Tool CoCasing stand-off band for use during the running and cementing of casing in wellbores
US4984633 *Oct 20, 1989Jan 15, 1991Weatherford U.S., Inc.Nozzle effect protectors, centralizers, and stabilizers and related methods
US7708064 *Dec 27, 2007May 4, 2010At Balance Americas, LlcWellbore pipe centralizer having increased restoring force and self-sealing capability
CN101932789BDec 24, 2008Jun 19, 2013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
Classifications
U.S. Classification166/241.6
International ClassificationE21B17/10, E21B17/00
Cooperative ClassificationE21B17/1028
European ClassificationE21B17/10C2B