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Stochastic bit noise control

A drill bit and controller technology, which is applied in drilling automatic control system, drilling equipment, directional drilling, etc.

Inactive Publication Date: 2010-07-21
PRAD RES & DEV LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These techniques ignore the random run-out that the drill would likely have in the absence of directional force

Method used

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  • Stochastic bit noise control
  • Stochastic bit noise control
  • Stochastic bit noise control

Examples

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Embodiment Construction

[0035] The ensuing description provides preferred exemplary embodiment(s) only, and is not intended to limit the scope, applicability, or structure of the present disclosure. Rather, the ensuing description of the preferred exemplary embodiment(s) will provide those skilled in the art with an enabler for implementing the preferred exemplary embodiment. It being understood that various changes may be made in the function and arrangement of elements without departing from the spirit and scope as set forth in the appended claims.

[0036] First refer to figure 1 , shows a block diagram of an embodiment of the drill bit orientation system 100 . An Integrated Control and Information Service (ICIS) 104 is located on the surface to operate the drill string rotation control block 112 and the winch control block 108 . In addition, ICIS 104 generally guides the direction of drilling in earth formations. Information such as possible selection of various biasing mechanisms and steering...

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Abstract

A drill bit direction system and method is disclosed that modifies or biases the stochastic movement of the drill bit and / or stochastic interactions between the drill bit and an inner- wall of a borehole being drilled by a drilling system to change the direction of drilling of the drilling system. The direction of the drill bit is monitored to determine if the direction happens to align in some way with a preferred direction. If the direction isn't close enough to a preferred direction, a biasing mechanism modifies the stochastic movement in an attempt to modify the direction closer to the preferred direction. Any of a number of biasing mechanisms can be used. Some embodiments can resort to conventional steering mechanisms to supplement the biasing mechanism.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of, and is a claimant to, pending U.S. Application No. 11 / 839,381, filed August 15, 2007, and entitled "SYSTEM ANDMETHOD FOR CONTROLLING A DRILLING SYSTEM FOR DRILLINGA BOREWELL IN AN EARTH FORMATION," Continuation of the application, which is hereby incorporated by reference in its entirety. [0003] This application is related to U.S. Patent Application No. / , entitled "DRILL BIT GAUGEPAD CONTROL," (Attorney Docket No. 57.0831 U.S. CIP), filed on the same date as this application, which application is hereby incorporated by reference in its entirety . [0004] This application is related to U.S. Patent Application No. / (Attorney's Case No. temporarily No.57.0834U.S.CIP) entitled "SYSTEM ANDMETHOD FOR DIRECTIONALLY DRILLING A BOREHOLE WITH AROTARY DRILLING SYSTEM" filed on the same day as this application. The contents are hereby incorporated by reference in their entirety. [0005] Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/06
CPCE21B7/06E21B44/005
Inventor 阿什利·约翰逊迈克尔·谢帕德杰弗里·当顿
Owner PRAD RES & DEV LTD