Apparatus for connecting sucker rods
A apparatus having an elongate body having an exterior surface, a first end and a second end. A first coupling is positioned at the first end which adapted to mate with a first sucker rod. A second coupling is positioned at the second end which is adapted to mate with a second sucker rod to form a sucker rod string. At least one helical fin spiralling around at least a portion of the exterior surface of the body, such that, upon rotation of the sucker string, the at least one helical fin creates fluid movement.
The present invention relates to an apparatus for connecting sucker rods.
BACKGROUND OF THE INVENTIONPresently, connectors are used to connect one sucker rod to another in end to end fashion. When the sucker rods are connected in end to end fashion, they make up the mechanical link from a unit on the surface to the sucker rod pump at the bottom of a well. The sucker rod pump lifts fluid to the surface by rotating the sucker rods in a tubing string in a borehole. Presently, boxes or heavy coupling elements are used when connection one sucker rod to another sucker rod.
SUMMARY OF THE INVENTIONWhat is required is a connector for sucker rods which assists the flow of fluid by propelling the fluid during rotation of a sucker rod string.
According to the present invention there is provided A apparatus having an elongate body having an exterior surface, a first end and a second end. A first coupling is positioned at the first end which adapted to mate with a first sucker rod. A second coupling is positioned at the second end which is adapted to mate with a second sucker rod to form a sucker rod string. At least one helical fin spiralling around at least a portion of the exterior surface of the body, such that, upon rotation of the sucker string, the at least one helical fin creates fluid movement.
BRIEF DESCRIPTION OF THE DRAWINGSThese and other features of the invention will become more apparent from the following description in which reference is made to the appended drawings, the drawings are for the purpose of illustration only and are not intended to in any way limit the scope of the invention to the particular embodiment or embodiments shown, wherein:
The preferred embodiment, a connector for sucker rods generally identified by reference numeral 10, will now be described with reference to
Structure and Relationship of Parts:
Referring to
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Operation:
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Cautionary Warnings:
In this patent document, the word “comprising” is used in its non-limiting sense to mean that items following the word are included, but items not specifically mentioned are not excluded. A reference to an element by the indefinite article “a” does not exclude the possibility that more than one of the element is present, unless the context clearly requires that there be one and only one of the elements.
It will be apparent to one skilled in the art that modifications may be made to the illustrated embodiment without departing from the spirit and scope of the invention as hereinafter defined in the Claims.
Claims
1. A apparatus, comprising
- an elongate body having an exterior surface, a first end and a second end;
- a first coupling positioned at the first end adapted to mate with a first sucker rod;
- a second coupling positioned at the second end adapted to mate with a second sucker rod to form a sucker rod string; and
- at least one raised profile spiralling around at least a portion of the exterior surface of the body, such that, upon rotation of the sucker string, the at least one helical fin creates fluid movement.
2. The apparatus as defined in claim 1, wherein the at least one raised profile is a helical fin.
3. The apparatus as defined in claim 1 wherein the at least one raised profile spirals around the exterior surface of elongate body from the first end to the second end.
4. The apparatus as defined in claim 1 wherein the at least one raised profile spirals around the first coupling and along the exterior surface and around the second coupling.
5. The apparatus as defined in claim 1 wherein the first coupling has a threaded bore adapted to receive a threaded end of the first sucker rod.
6. The apparatus as defined in claim 1 wherein the second coupling has a threaded bore adapted to receive a threaded end of the second sucker rod.
Type: Application
Filed: Feb 28, 2006
Publication Date: Sep 7, 2006
Applicant: Spiral Lift Tools Ltd. (Lloydminster)
Inventor: Arnold Wollmann (Lloydminster)
Application Number: 11/363,700
International Classification: E21B 17/10 (20060101);