Dynamically balanced cutting tool system

• US 7,464,013 B2
• Filed: 04/06/2005
• Issued: 12/09/2008
• Est. Priority Date: 03/13/2000
• Status: Expired due to Term

• Current Assignee: Smith International Incorporated (Schlumberger NV)
• Original Assignee: Smith International Incorporated (Schlumberger NV)
• Inventors: Oliver, Stuart, Huang, Sujian, Mensa-Wilmot, Graham
• Primary Examiner(s): FREJD, RUSSELL WARREN
• Application Number:
  US11/100,337
• Publication Number:
  US 20050273302A1
• Time in Patent Office: 1,343 Days
• Field of Search: 703/7, 703/10, 700/28, 700/29, 700/30, 700/31, 700/117, 175/24, 175/39, 175/57, 175/374, 731/524.7, 340/853.3, 702/9
• US Class Current: 703/7
• CPC Class Codes: E21B 10/00 Drill bits specially adapted for deflecting the direction of boring E21B7/064; with means for collecting substances E21B27/00
• CPC Class Codes: E21B 10/16 characterised by tooth form or arrangement
• CPC Class Codes: E21B 44/00 Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
• CPC Class Codes: E21B 7/28 Enlarging drilled holes, e.g. by counterboring
• CPC Class Codes: G06F 2111/10 Numerical modelling
• CPC Class Codes: G06F 2113/14 Pipes
• CPC Class Codes: G06F 30/20 Design optimisation, verification or simulation optimisation, verification or simulation of circuit designs G06F30/30

Abstract

A method of dynamically balancing a hole enlargement system is disclosed. The method includes modeling the hole enlargement system based on input parameters, simulating the hole enlargement system, adjusting one or more of the input parameters, and repeating the modeling, simulating, and adjusting until a balanced condition is met.

Claims

1. A method of dynamically balancing a hole enlargement system, comprising:

modeling the hole enlargement system based on input parameters, wherein the hole enlargement system comprises a drill bit and a hole opener;

simulating the hole enlargement system;

adjusting one or more of the input parameters;

repeating the modeling, simulating, and adjusting until a balanced condition is met; and

graphically displaying at least one aspect of the simulating.

2. The method of claim 1, wherein the balanced condition comprises substantially balanced forces acting on the hole enlargement system.

3. The method of claim 2, wherein the substantially balanced forces comprise at least one force selected from the group of axial force, lateral force, torsional force, and vibrational force.

4. The method of claim 1, wherein the balanced condition comprises substantially balanced torque acting on the hole enlargement system.

5. The method of claim 1, wherein the balanced condition comprises the drill bit and the hole opener having substantially the same rate of penetration.

6. A bottom hole assembly designed using the method of claim 1.

7. A method of increasing the life of one or more components in a bottom hole assembly, comprising:

modeling dynamic vibrations occurring in a bottom hole assembly while drilling;

adjusting one or more aspects of the bottom hole assembly based on outputs produced by modeling, wherein the adjusting comprises moving an axial location of at least one component of the bottom hole assembly to reduce or minimize the dynamic vibrations, and wherein the at least one component comprises a hole opener; and

graphically displaying at least one output produced by modeling.