TORQUE REDUCTION TOOL - WEATHERFORD LAMB

Title:

TORQUE REDUCTION TOOL

Document Type and Number:

WIPO Patent Application WO2001051759

Kind Code:

A3

Abstract:

A tool for reducing torque on work string, eg for gas or oil production, comprises an upper clamp (2), a lower clamp (3) and connection means (4), the three components formed as a unitary structure (1). The tool also comprises bearing means, preferably made from an elastomeric compound, and an annular body (7) (see figure 4) held in place over the connection means by the clamps. The clamps may comprise spigots (5) for retaining the connection means. In a preferred embodiment the annular body is in two semi-annular components connected at one end to allow them to pivot, and the other end comprises mating castellations for receiving a fastening pin. The annular body may comprise a number of replaceable wear pads (14) which may be made of bronze or an elastomer. The unitary structure of the tool enhances the integral strength and efficiency of the clamps.

More Like This:

WO/1996/041063	CENTRALIZER
WO/2009/115829	FLOW RESTRICTOR
WO/2019/157021	METHOD AND APPARATUS FOR COMPLETING WELLS

Inventors:

TULLOCH RORY MCCRAE (GB)
BAIN JAMES (GB)
HAITES BINNERT RUERD (GB)
WARDLEY MIKE (GB)

Application Number:

PCT/GB2001/000039

Publication Date:

January 31, 2002

Filing Date:

January 05, 2001

Export Citation:

Click for automatic bibliography generation Help

Assignee:

WEATHERFORD LAMB (US)
TULLOCH RORY MCCRAE (GB)
BAIN JAMES (GB)
HAITES BINNERT RUERD (GB)
WARDLEY MIKE (GB)

International Classes:

E21B17/10; (IPC1-7): E21B17/10

Foreign References:

US5069297A

1991-12-03

Other References: