Dual-type speed control mechanism for a turbine

Patent metadata

Field	Value
Publication number	US-2016017660-A1
Application number	US-201314440377-A
Country	US
Kind code	A1
Filing date	Dec 17, 2013
Priority date	Dec 17, 2013
Publication date	Jan 21, 2016
Grant date	—

Abstract

According to aspects of the present disclosure, systems and methods for controlling the speed of a fluid-controlled drive mechanism are described herein. An example system may include a housing, a variable flow fluid pathway disposed within the housing, an electromagnet coupled to the housing, a fluid-controlled drive mechanism in fluid communication with the variable flow fluid pathway, and a load-generating assembly coupled to the fluid-controlled drive mechanism. An example method may include altering a variable flow fluid pathway disposed within a housing, wherein the variable flow fluid pathway is in fluid communication with a fluid-controlled drive mechanism, and generating an electrical current through an electromagnet, wherein the electromagnet is coupled to the housing.

First claim

What is claimed is:

1 . A system comprising:
a housing; a variable flow fluid pathway disposed within the housing; an electromagnet coupled to the housing; a fluid-controlled drive mechanism in fluid communication with the variable flow fluid pathway; and a load-generating assembly coupled to the fluid-controlled drive mechanism.

2 . The system of claim 1 , wherein the variable flow fluid pathway comprises a flow control valve configured to vary the fluid flow through the variable flow fluid pathway.

3 . The system of claim 1 , further comprising an offset mandrel coupled to an output of the fluid-controlled drive mechanism, wherein the offset mandrel is independently rotatable with respect to the housing.

4 . The system of claim 1 , wherein the fluid-controlled drive mechanism comprises one of a turbine and a mud motor.

5 . The system of claim 1 , wherein the load-generating assembly comprises a generator.

6 . The system of claim 1 , wherein the load-generating assembly comprises:
a mixing blade; and a shaft coupled to the mixing blade, wherein the shaft is disposed in one of an electrorheological and a magnetorheological fluid, and wherein the viscosity of the electrorheological and magnetorheological fluid may be changed by the electromagnet.

7 . A method comprising:
altering a variable flow fluid pathway disposed within a housing, wherein the variable flow fluid pathway is in fluid communication with a fluid-controlled drive mechanism; and generating an electrical current through an electromagnet, wherein the electromagnet is coupled to the housing.

8 . The method of claim 7 , wherein altering the variable flow fluid pathway comprises changing a fluid flow through the variable flow fluid pathway using a flow control valve.

9 . The method of claim 08 , further comprising:
monitoring the speed of the fluid-controlled drive mechanism at a sensor; and relating the speed of the fluid-controlled drive mechanism to a changing in position of the flow control valve.

10 . The method of claim 07 , wherein the fluid-controlled drive mechanism comprises one of a turbine and a mud motor.

11 . The method of claim 07 , wherein a generator is coupled to the fluid controlled drive mechanism.

12 . The method of claim 07 , wherein an offset mandrel is coupled to an output of the fluid-controlled drive mechanism, and wherein the offset mandrel is independently rotatable with respect to the housing.

13 . The method of claim 07 , further comprising:
introducing one of magnetorheological and electrorheological fluid into a cavity coupled to the housing.

14 . The method of claim 07 , further comprising:
introducing one of magnetorheological and electrorheological fluid into a cavity coupled to the fluid-controlled drive mechanism.

15 . A method comprising:
positioning an assembly within a borehole, wherein the assembly comprises:
a housing;
a variable flow fluid pathway disposed within the housing;
a fluid-controlled drive mechanism in fluid communication with the variable flow fluid pathway;
an electromagnet coupled to the housing; and
a cavity coupled to the housing; and
varying the rotational speed of the fluid-controlled drive mechanism by producing current through the electromagnet.

16 . The method of claim 015 , further comprising:
varying a rotational speed of the fluid-controlled drive mechanism by altering the variable flow fluid pathway using a flow control valve.

17 . The method of claim 015 , wherein the fluid-controlled drive mechanism comprises one of a turbine and a mud motor.

18 . The method of claim 15 , wherein a generator is coupled to the fluid-controlled drive mechanism.

19 . The method of claim 0150 , wherein the assembly further comprises an offset mandrel coupled to an output of the fluid-controlled drive mechanism, and wherein the offset mandrel is independently rotatable with respect to the housing.

20 . The method of claim 15 , further comprising:
introducing one of magnetorheological and electrorheological fluid into a cavity coupled to the housing.

Assignees

• Halliburton Energy Services Inc

Inventors

• Golla Christopher
• Winslow Daniel
• Deolalikar Neelesh

Classifications

• G05D13/62

  characterised by the use of electric means, e.g. use of a tachometric dynamo, use of a transducer converting an electric value into a displacement {(electric motor control H02P)} · CPC title

• F03B13/02

  Adaptations for drilling wells · CPC title

• F01D25/24

  Casings (modified for heating or cooling F01D25/14); Casing parts, e.g. diaphragms, casing fastenings (casings for rotary machines or engines in general F16M {; special arrangements in stators dealing with breaking-off of part of rotor F01D21/045}) · CPC title

• F01D15/10

  Adaptations for driving, or combinations with, electric generators · CPC title

• F01D5/02

  Blade-carrying members, e.g. rotors (rotors of non-bladed type F01D1/34; stators F01D9/00 {; selecting particular materials F01D5/28}) · CPC title