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Stop collar device and method of positioning the device on a tubular member

Inactive Publication Date: 2019-05-09
MEDUNA INVESTMENTS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patent describes a stop collar assembly for use on a tubular member. It consists of two identical and symmetrically placed end rings and an inner sleeve that is placed over the tubular member between the rings. The inner sleeve has a split section that helps it slide over the tubular member during installation, and it also allows for a closeable gap when pressure is applied to the outer surface of the inner sleeve. The technical effect of this design is that it provides a secure and effective stop collar that can be easily installed and removed, which helps to prevent leaks and reduce the likelihood of damage to the tubular member during use.

Problems solved by technology

One disadvantage of the set screws is that they are point loading on the casing whereby corrosive spots maybe caused thereon.
Another disadvantage is that the holding force of the set screws are a weak point of the system.
Still another disadvantage is that hinged rings are easy to break.

Method used

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  • Stop collar device and method of positioning the device on a tubular member
  • Stop collar device and method of positioning the device on a tubular member
  • Stop collar device and method of positioning the device on a tubular member

Examples

Experimental program
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Embodiment Construction

[0023]Referring now to FIG. 1, there is shown a three dimensional schematic of a stop collar assembly 10 in an unassembled position disposed over a casing 16 used in oil and gas operations. Stop collar assembly 10 includes identical and symmetrically disposed over casing 16 end rings 12A and 12B and an inner sleeve 14 disposed over casing 16 between end rings 12A and 12B. End rings 12A and 12B are made of strong metal material such as steel and are appropriately sized to slide over the exterior of inner sleeve 14 and to effect the desired compression on inner sleeve 14 as hereinafter described. Inner sleeve 14 is also constructed of metal material such as steel and it is appropriately sized to be intimately received over the exterior of casing 16. Inner sleeve 14 includes a split section 18 to facilitate the sliding of inner sleeve 14 over casing 16 during installation and to provide a closeable gap when compression is applied on inner sleeve 14. The inner surface of inner sleeve is...

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PUM

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Abstract

A stop collar assembly includes an inner sleeve and two end rings. The stop collar assembly is received over a tubular member and is securely attached thereto by slidingly advancing the two end rings toward each other over the inner sleeve and applying a compression force on the exterior of the inner sleeve.

Description

RELATED PRIORITY DATE APPLICATION[0001]This application claims the benefit under 35 U.S.C. 119(e) of the U.S. provisional application No. 62 / 541,866 filed on Aug. 7, 2017.TECHNICAL FIELD OF THE INVENTION[0002]The present invention relates to the field of oil and gas production and, more particularly, to an apparatus for gripping devices on tubular members downhole. Still more particularly, the present invention discloses a stop collar assembly and a method of installing the same.BACKGROUND OF THE INVENTION[0003]The use of stop collar assemblies downhole in oil and gas production operations are well known. Stop collars are used to position the various downhole tools about the casing and wellbore. In the past, stop collar assemblies were ring or hinged ring assemblies with a locking pin that is locked in place by set screws. One disadvantage of the set screws is that they are point loading on the casing whereby corrosive spots maybe caused thereon. Another disadvantage is that the hol...

Claims

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Application Information

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IPC IPC(8): E21B17/16
CPCE21B17/16E21B17/10
Inventor RAYNE, LANCE MICHAEL
Owner MEDUNA INVESTMENTS LLC