Method and apparatus for remotely changing flow profile in conduit and drilling bit

a flow profile and flow technology, applied in the direction of drilling pipes, rotary drilling, borehole/well accessories, etc., can solve the problems of deteriorating hole cleaning efficiency, inability to change the geometry of the nozzle, and less efficient cuttings removal, so as to reduce the area of the nozzle outlet orifice, increase and reduce the velocity of the nozzle jet

a flow profile and flow technology, applied in the direction of drilling pipes, rotary drilling, borehole/well accessories, etc., can solve the problems of deteriorating hole cleaning efficiency, inability to change the geometry of the nozzle, and less efficient cuttings removal, so as to reduce the area of the nozzle outlet orifice, increase and reduce the velocity of the nozzle jet

US20150136489A1Inactive Publication Date: 2015-05-21MIT INNOVATION
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  • Method and apparatus for remotely changing flow profile in conduit and drilling bit
  • Method and apparatus for remotely changing flow profile in conduit and drilling bit
  • Method and apparatus for remotely changing flow profile in conduit and drilling bit

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Embodiment Construction

[0092]U.S. Provisional Application No. 61 / 710,887, filed Oct. 8, 2012 for METHOD AND APPARATUS TO CONTROL THE MUD FLOW IN DRILL STRINGS AND WELLBORE ANNULUS, by Ahmed TAHOUN, Raed Kafafy, Karam Jawamir, Mohamed Aldheeb, Abdul Mushawwir Mohamad Khalil is herein incorporated by reference in its entirety.

[0093]U.S. Provisional Application No. 61 / 622,572, filed Apr. 11, 2012 for METHOD AND APPARATUS OF CONTROL DRILLING FLUID LOSSES AND IMPROVED HOLE CLEANING IN OIL & GAS SUBTERRANEAN DRILLING OPERATIONS, by Ahmed Moustafa Tahoun is herein incorporated by reference in its entirety.

[0094]U.S. Provisional Application No. 61 / 710,823, filed Oct. 8, 2012 for METHOD AND APPARATUS TO HARVEST ENERGY INSIDE WELLBORE 100 FROM CHANGE OF FLUID FLOW RATE, by Ahmed M. Tahoun, Raed I. Kafafy, Karam Jawamir, Mohamed A. Aldheeb, Abdul M. Khalil is herein incorporated by reference in its entirety.

[0095]U.S. Provisional Application No. 61 / 648,575, filed May 17, 2012 for Method and Apparatus to remotely cha...

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Abstract

The present invention relates to apparatus and methods for remotely adjusting the drill bit hydraulic horse power per square inch (HSI). Varying the nozzle geometry remotely without the need to pull the drill string outside the hole has obvious advantage. Changing the nozzle flow geometry results in changing the nozzle HSI, which is beneficial to optimize drilling a well having different rock formations. The drill bit nozzle geometry of the present invention can be varied by causing a change of at least one physical property of the environment. The variable geometry nozzle is not limited to drill bit, it can be placed within the inner flow passage or between the inner flow passage and annular flow passage for controlling flow profile within a wellbore, a tubular string or a flow conduit.

Description

RELATED APPLICATIONS[0001]The present application is a continuation-in-part application of U.S. patent application Ser. No. 13 / 846,946, filed Mar. 18, 2013, for APPARATUS AND METHOD TO REMOTELY CONTROL FLUID FLOW IN TUBULAR STRINGS AND WELLBORE ANNULUS, by Ahmed M. Tahoun, Raed I. Kafafy, Karam J. Jawamir, Mohamed A. Aldheeb, Abdul M. Khalil, included by reference herein and for which benefit of the priority date is hereby claimed.[0002]The present application is a continuation-in-part application of U.S. patent application Ser. No. 13 / 861,255, filed Apr. 11, 2013, for APPARATUS AND METHOD TO REMOTELY CONTROL FLUID FLOW IN TUBULAR STRINGS AND WELLBORE ANNULUS, by Ahmed M. Tahoun, Raed I. Kafafy, Karam J. Jawamir, Mohamed A. Aldheeb, and Abdul M. Khalil, included by reference herein and for which benefit of the priority date is hereby claimed.[0003]The present application is a continuation-in-part application of U.S. provisional patent application Ser. No. 61 / 648,575, filed May 17, 2...

Claims

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Application Information

Patent Timeline
21 May 2015
Publication
US20150136489A1
IPC
E21B41/00; E21B3/00; E21B49/00; E21B10/61
CPC
E21B41/0078; E21B49/003; E21B3/00; E21B10/61; E21B10/18; E21B17/10
Inventors
TAHOUN, AHMED; KAFAFY, RAED I.