Apparatus, Module, Device and Method for Shearing Objects

• US 20140290949A1
• Filed: 11/15/2012
• Published: 10/02/2014
• Est. Priority Date: 11/29/2011
• Status: Abandoned Application

• Current Assignee: DPIR Limited
• Original Assignee: DPIR Limited
• Inventors: Hall, Peter, Mudie, David
• Application Number:
  US14/361,154
• Publication Number:
  US 20140290949A1
• Time in Patent Office: Days
• US Class Current: 166/298
• CPC Class Codes: E21B 29/08 Cutting or deforming pipes to control fluid flow
• CPC Class Codes: E21B 33/063 for shearing drill pipes cutting of wireline E21B29/04

Abstract

An apparatus, a module, a device and a method for shearing objects are disclosed. The apparatus is configured for insertion into a borehole. The apparatus comprises: a primary axis; a movable shearing means; and a deflecting means. The deflecting means and the movable shearing means are mutually configured such that, when the movable shearing means is driven by a driving force in a direction parallel to the primary axis, the movable shearing means slides along the deflecting means and at least a portion of the movable shearing means is deflected in a direction towards to the primary axis.

Claims

1. An apparatus for shearing, wherein the apparatus is configured for insertion into a borehole, the apparatus comprising:

a primary axis;

a movable shearing means; and

a deflecting means;

wherein the deflecting means and the movable shearing means are mutually configured such that, when the movable shearing means is driven by a driving force in a direction parallel to the primary axis, the movable shearing means slides along the deflecting means and at least a portion of the movable shearing means is deflected in a direction towards to the primary axis.

2. An apparatus as claimed in claim 1, wherein the deflecting means and the movable shearing member comprise respective abutment surfaces, wherein the abutment surfaces are mutually configured such that, in use, the at least a portion of the driven movable shearing member glances off the deflecting member towards the primary axis.

3. An apparatus as claimed in claim 1, wherein the shape of the deflecting means and the shape of the movable shearing member are mutually configured such that, when the movable shearing member is driven by the driving force in the direction parallel to the primary axis, the at least a portion of the movable shearing member glances from the deflecting means in a direction towards the primary axis.

4. An apparatus as claimed in claim 1, wherein the direction towards the primary axis comprises at least one of:

a direction towards a centre of the apparatus and a direction substantially perpendicular to the primary axis.

5. An apparatus as claimed in claim 1, wherein the apparatus is configured to have an aperture therethrough defining the primary axis and wherein the apparatus is configured to shear an object located within the aperture.

6. An apparatus as claimed in claim 1, wherein the apparatus has only two movable shearing members.

7. An apparatus as claimed in claim 1, further comprising means for providing the driving force to the movable shearing member.

8. An apparatus as claimed in claim 7, wherein the means for providing the driving force to the movable shearing member comprises either:

an aperture therethrough parallel to the primary axis, or

a plurality of means each configured to provide a driving force to plurality of movable shearing members.

9. An apparatus as claimed in claim 1, wherein the driving force is provided via a hydraulic mechanism.

10. An apparatus as claimed in claim 1, wherein the apparatus is configured for movement within a borehole and/or within a pipe.

11. An apparatus as claimed in claim 1, wherein the apparatus is configured for operation within a borehole and/or within a pipe.

12. A module comprising the apparatus as claimed in claim 1.

13. A device comprising the apparatus of claim 1.

14. A shear ram tool, a pressure control equipment (PCE), a surface test tree (STT), a sub-sea test tree (SST), a string run into an well or a landing string comprising an apparatus as claimed in claim 1.

15. A method comprising:

inserting into a borehole an apparatus for shearing, the apparatus comprising;

a primary axis;

a movable shearing means; and

deflecting means;

driving the movable shearing means by a driving force in a direction parallel to the primary axis;

sliding the driven movable shearing means along the deflecting means; and

deflecting at least a portion of the driven movable shearing means from the deflecting means in a direction towards the primary axis.