IP Library Granted Patent US 10,610,842
Granted Patent B2
US 10,610,842 · App. 14/672,737 · Granted Apr 7, 2020

Optimized drive of fracturing fluids blenders

Inventor: Jonathan Wun Shiung Chong (Sugar Land, TX)
Assignee: Schlumberger Technology Corporation
B01F13/0037B01F3/1271
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Quick Facts
Patent No.
US 10,610,842
App. No.
14/672,737
Granted
Apr 7, 2020
Kind
B2
Abstract

A system for producing a wellbore fluid including a process fluid source, a rotating apparatus, and a motor directly coupled to the rotating apparatus. The motor is configured to receive a coolant and transfer heat from the motor to the coolant. The rotating apparatus is configured to receive process fluid from the process fluid source and mix the process fluid received from the process fluid source with one or more additives to produce a wellbore fluid. The coolant transfers heat to the process fluid, the wellbore fluid or both.

Claims (31)

1. A method of blending a wellbore fluid, the method comprising the steps of:

receiving at least a portion of a process fluid from a process fluid source;

mixing the at least a portion of the process fluid in a direct drive mixing assembly with one or more additives, such that a wellbore fluid is generated, wherein the direct drive mixing assembly is disposed at a wellbore surface and directly driven by an electric motor; and

transferring heat from the electric motor to a first coolant, wherein the first coolant is used to transfer heat to the process fluid source.

2. The method of claim 1 , comprising:

circulating the at least a portion of a process fluid from the process fluid source through the electric motor, and returning the at least a portion of the process fluid to the process fluid source to transfer heat from the electric motor to the process fluid source.

3. The method of claim 2 , wherein circulating the at least a portion of the process fluid comprises circulating the at least a portion of the process fluid through a motor gear box of the electric motor.

4. The method of claim 2 , wherein circulating the at least a portion of the process fluid further comprises circulating the at least a portion of the process fluid through a bearing housing of the electric motor.

5. The method of claim 2 , wherein transferring heat from the electric motor to the first coolant further comprises controlling a temperature of the at least a portion of the process fluid returned to the process fluid source.

6. The method of claim 1 , wherein transferring heat from the electric motor to the first coolant comprises:

circulating the first coolant through the electric motor to absorb heat;

transferring the first coolant to a heat exchanger;

circulating a second coolant through the heat exchanger to transfer heat from the first coolant to the second coolant.

7. The method of claim 1 , further comprising delivering the wellbore fluid from the wellbore surface and into a wellbore.

8. The method of claim 1 , wherein the first coolant comprises at least a portion of the process fluid.

9. A method of blending a wellbore fluid, the method comprising the steps of:

receiving at least a portion of a process fluid from a process fluid source;

mixing the at least a portion of the process fluid in a direct drive mixing assembly with one or more additives, such that a wellbore fluid is generated, wherein the direct drive mixing assembly is disposed at a wellbore surface and directly driven by an electric motor; and

circulating the at least a portion of a process fluid from the process fluid source through the electric motor, and returning the at least a portion of the process fluid to the process fluid source to transfer heat from the electric motor to the process fluid source.

10. The method of claim 9 , wherein circulating the at least a portion of the process fluid comprises circulating the at least a portion of the process fluid through a motor gear box of the electric motor.

11. The method of claim 9 , wherein circulating the at least a portion of the process fluid further comprises circulating the at least a portion of the process fluid through a bearing housing of the electric motor.

12. The method of claim 9 , wherein transferring heat from the electric motor further comprises controlling a temperature of the at least a portion of the process fluid returned to the process fluid source.

13. The method of claim 9 , further comprising delivering the wellbore fluid from the wellbore surface and into a wellbore.

14. A method of blending a wellbore fluid, the method comprising the steps of:

receiving at least a portion of a process fluid from a process fluid source;

mixing the at least a portion of the process fluid in a direct drive mixing assembly with one or more additives, such that a wellbore fluid is generated, wherein the direct drive mixing assembly is disposed at a wellbore surface and directly driven by an electric motor; and

circulating the at least a portion of a process fluid from the process fluid source through a motor gear box of the electric motor or a bearing housing of the electric motor, and returning the at least a portion of the process fluid to the process fluid source to transfer heat from the motor gear box of the electric motor or the bearing housing of the electric motor to the process fluid source.

15. The method of claim 14 , wherein circulating the at least a portion of the process fluid comprises circulating the at least a portion of the process fluid through the motor gear box of the electric motor.

16. The method of claim 14 , wherein circulating the at least a portion of the process fluid further comprises circulating the at least a portion of the process fluid through the bearing housing of the electric motor.

17. The method of claim 14 , wherein transferring heat from the motor gear box of the electric motor or the bearing housing of the electric motor further comprises controlling a temperature of the at least a portion of the process fluid returned to the process fluid source.

18. The method of claim 14 , further comprising delivering the wellbore fluid from the wellbore surface and into a wellbore.

Assignments (7)
CHANGE OF NAME Recorded Jan 13, 2025
From: LIBERTY OILFIELD SERVICES LLC
To: LIBERTY ENERGY SERVICES LLC
Reel/Frame 069881/0664 →
RELEASE OF SECURITY INTEREST Recorded Jun 26, 2023
From: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS ADMINISTRATIVE AGENT
To: LIBERTY OILFIELD SERVICES LLC
Reel/Frame 064058/0405 →
RELEASE OF PATENT SECURITY AGREEMENT Recorded Jan 26, 2023
From: U.S. BANK NATIONAL ASSOCIATION, AS AGENT
To: LIBERTY OILFIELD SERVICES LLC
Reel/Frame 062516/0566 →
PATENT SECURITY AGREEMENT Recorded Jun 15, 2021
From: LIBERTY OILFIELD SERVICES LLC
To: U.S. BANK NATIONAL ASSOCIATION, AS AGENT
Reel/Frame 056596/0168 →
SECURITY INTEREST Recorded Feb 10, 2021
From: LIBERTY OILFIELD SERVICES LLC
To: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS ADMINISTRATIVE AGENT
Reel/Frame 055217/0599 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 4, 2021
From: SCHLUMBERGER TECHNOLOGY CORPORATION
To: LIBERTY OILFIELD SERVICES LLC
Reel/Frame 054802/0869 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 28, 2016
From: CHONG, JONATHAN WUN SHIUNG
To: SCHLUMBERGER TECHNOLOGY CORPORATION
Reel/Frame 038399/0146 →
Continuity (2)
Provisional Application 61973073 · Mar 31, 2014
Related Publication 20150273419A1 · Oct 1, 2015
Cited By (26)
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