Cement mixer and multiple purpose pumper (CMMP) for land rig

Patent metadata

Field	Value
Publication number	US-12442271-B2
Application number	US-202418732235-A
Country	US
Kind code	B2
Filing date	Jun 3, 2024
Priority date	Mar 10, 2017
Publication date	Oct 14, 2025
Grant date	Oct 14, 2025

Abstract

Embodiments disclosed provide a pump assembly including a first pump for delivering at least one fluid. The first pump may include a first inlet coupled to the first pump for delivering at least one first fluid to the first pump, a second inlet coupled to the first pump for delivering at least one second fluid to the first pump, a first discharge coupled to the first pump for delivering the at least one first fluid at a first pressure, and a second discharge coupled to the first pump for delivering the at least one second fluid at a second pressure. In some embodiments, the first discharge and the second discharge are isolated from each other.

First claim

What is claimed is:

1. A method performed at a wellsite, the method comprising:
providing a mud pump assembly at the wellsite, the mud pump assembly including a mud pump, a mud source, a first suction line and a first discharge line, wherein the first suction line and the first discharge line are coupled to the mud pump, the first suction line is configured to supply mud, cementing fluid, and clearing fluid to the mud pump and the first discharge line is configured to discharge mud, cementing fluid, and clearing fluid from the mud pump, and wherein:
the mud source is coupled to the first suction line;
crossover piping is coupled to the first suction line; and
a cementing fluid source and a clearing fluid source are coupled to the crossover piping;

operating the mud pump to perform a mud pumping operation by pumping the mud downhole during drilling of a borehole, wherein the mud is supplied to the mud pump via the first suction line and is pumped downhole by the first discharge line;
clearing the mud from the mud pump assembly by supplying the clearing fluid to the mud pump via the crossover piping and the first suction line; and
subsequently operating the mud pump to perform a cementing operation by pumping the cementing fluid downhole to cement casing in the borehole, wherein the cementing fluid is supplied to the mud pump via the crossover piping and the first suction line, thus utilizing the same mud pump to pump the mud for the mud pumping operation and to pump the cementing fluid for the cementing operation.

2. The method of claim 1 , wherein the clearing fluid is water, and wherein clearing the mud from the mud pump assembly comprises flowing the water through the mud pump assembly.

3. The method of claim 1 , comprising mixing the cementing fluid via a cement mixing system.

4. The method of claim 3 , wherein the cement mixing system is supported on a skid, and the mud pump assembly is positioned separately from the skid.

5. The method of claim 1 , further comprising subsequently clearing the cementing fluid from the mud pump assembly by flowing the clearing fluid through the mud pump assembly.

6. The method of claim 1 , comprising monitoring, via a sensor, a flow of the mud being pumped downhole by the mud pump.

7. The method of claim 1 , comprising controlling, via a control unit, the mud pumping operation and the cementing operation.

8. The method of claim 1 , comprising:
delivering electric power from a rig generator to a rig; and
using the electric power to operate rig equipment and the mud pump assembly.

9. The method of claim 8 , comprising:
mixing the cementing fluid via a cement mixing system; and
using the electric power to operate the rig equipment, the mud pump assembly, and the cement mixing system.

10. A method performed at a wellsite, the method comprising:
providing a pump assembly at the wellsite, the pump assembly including:
a pump;
a first suction line coupled to the pump, the first suction line configured to provide a cementing fluid and a clearing fluid to the pump; and
a second suction line coupled to the pump and a mud source, the second suction line configured to provide mud to the pump;

coupling a cement mixing system to a skid at the wellsite, wherein the cement mixing system is coupled to the first suction line;
operating the cement mixing system to form the cementing fluid;
operating the pump to perform a cementing operation by pumping the cementing fluid downhole to cement casing in a borehole, wherein the cementing fluid is supplied to pump via the first suction line and the cement mixing system, and wherein the cementing fluid is pumped downhole via a first discharge line coupled to the pump; and
operating the pump to perform a mud pumping operation by pumping mud downhole during drilling of the borehole, wherein the mud is supplied to the pump via the mud source and the second suction line, and wherein the mud is pumped downhole via a second discharge line coupled to the pump.

11. The method of claim 10 , further comprising clearing the cementing fluid from the pump assembly by flowing the clearing fluid through the pump assembly.

12. The method of claim 10 , wherein the pump assembly comprises a mud pump assembly, the pump comprises a mud pump, and the mud pump assembly with the mud pump are positioned at the wellsite separately from the skid.

13. The method of claim 10 , comprising:
delivering electric power to a rig; and
using the electric power to operate rig equipment, the cement mixing system, and the pump assembly.

14. The method of claim 10 , operating a liquid additive system to deliver liquid additives to the cement mixing system.

Assignees

• Schlumberger Technology Corp

Inventors

• Orban Jacques
• Zheng Shunfeng
• Patton Bartley
• Erickson Eric

Classifications

• B28C9/004

  Making slurries, e.g. with discharging means for injecting in a well or projecting against a wall · CPC title

• B28C7/0418

  control systems therefor · CPC title

• E21B43/2607

  Surface equipment specially adapted for fracturing operations · CPC title

• E21B33/13 Primary

  Methods or devices for cementing, for plugging holes, crevices or the like · CPC title

• B64C35/005

  with propellers, rudders or brakes acting in the water · CPC title