Cement mixer and multiple purpose pumper (CMMP) for land rig
AssigneeSchlumberger Technology Corporation
InventorsJacques Orban, Shunfeng Zheng, Bartley Patton, Eric Erickson
Life of this patent
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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.
Claims14
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.
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.
Dependencies are inferred from the claim text.