CA3170922A1 - Linear frac pump assembly - Google Patents
Linear frac pump assembly Download PDFInfo
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- CA3170922A1 CA3170922A1 CA3170922A CA3170922A CA3170922A1 CA 3170922 A1 CA3170922 A1 CA 3170922A1 CA 3170922 A CA3170922 A CA 3170922A CA 3170922 A CA3170922 A CA 3170922A CA 3170922 A1 CA3170922 A1 CA 3170922A1
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- linear
- plunger
- pump assembly
- fluid
- plunger rod
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- 239000012530 fluid Substances 0.000 claims abstract description 63
- 238000004891 communication Methods 0.000 claims abstract description 11
- 230000001105 regulatory effect Effects 0.000 claims abstract 2
- 230000005540 biological transmission Effects 0.000 claims description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000005662 electromechanics Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/053—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/02—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having two cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/047—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the outer ends of the cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
- F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
- F04B9/109—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers
- F04B9/111—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers with two mechanically connected pumping members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
- F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
- F04B9/109—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers
- F04B9/117—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers the pumping members not being mechanically connected to each other
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
- E21B43/2607—Surface equipment specially adapted for fracturing operations
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
A linear frac pump includes a fluid end having an inlet valve disposed proximate to an inlet port, and a discharge valve disposed proximate to a discharge port. The pump further includes a first plunger rod housed within a first plunger housing, the first plunger rod having first and second ends, the first end being in fluid communication with the fluid end, and the second end being coupled to a first actuator. The pump includes a second plunger rod housed within a plunger housing, the second plunger rod having first and second ends, the first end being in fluid communication with the fluid end, and the second end being coupled to a second actuator. The first and second plunger rods and housings are coupled to the fluid end and the first and second plunger rods operate in sync to drive fluids inward from the inlet port and outward via the discharge port being regulated by the inlet and discharge valves.
Description
LINEAR FRAC PUMP ASSEMBLY
FIELD
The present disclosure relates to positive displacement pumps, and in particular, to a linear frac pump assembly with a folded configuration.
BACKGROUND
Large powerful pumps are commonly used for mining and oilfield applications, such as, for example, hydraulic fracturing. During hydraulic fracturing, fracturing fluid (i.e., cement, mud, frac sand and other material) is pumped at high pressures into a wellbore to cause the producing formation to fracture. One commonly used pump in hydraulic fracturing is a high-pressure reciprocating pump, like the SPM DestinyTM TWS 2500 frac pump or the SPM
QEM 3000 Continuous Duty Frac Pump, manufactured by S.P.M. Oil & Gas, a Caterpillar Company located in Fort Worth, Texas. In operation, the fracturing fluid is caused to flow into and out of a pump fluid chamber as a consequence of the reciprocation of a piston-like plunger respectively moving away from and toward the fluid chamber. As the plunger moves away from the fluid chamber, the pressure inside the chamber decreases, creating a differential pressure across an inlet valve, drawing the fracturing fluid through the inlet valve into the chamber. When the plunger changes direction and begins to move towards the fluid chamber, the pressure inside the chamber substantially increases closing the inlet valve increasing the differential pressure across an outlet valve and causes the outlet valve to open, enabling the highly pressurized fracturing fluid to discharge through the outlet valve into the wellbore.
A typical frac unit is powered with a diesel engine driving a frac pump through a multispeed transmission. The rotational energy transferred to the reciprocating frac pump is channeled to horizontal plunger bores for pumping via crankshafts and connector rods. The operating conditions are often extreme involving high fluid flow and high operating pressures (oftentimes up to 15,000 psi). Pressure fluctuations as seen in diesel powered units or other internal combustion-based units often cause undesirable cyclic stresses on components, shortening their lives.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of an embodiment of a linear pump according to the teachings of the present disclosure;
FIG. 2 is a cross-sectional view of an embodiment of a linear pump according to the teachings of the present disclosure;
FIG. 3 is a schematic cross-sectional view of an embodiment of the linear pump according to the teachings of the present disclosure; and FIG. 4 is a schematic cross-sectional view of an embodiment of a linear pump having a folded configuration according to the teachings of the present disclosure.
DETAILED DESCRIPTION
The introduction of natural gas as "free fuel" for frac operations has led to investigation of the best way to utilize natural gas to generate pumping power. One option is to use a large gas turbine generator that creates electrical power to run the frac job on electricity. Since electric drive is not limited to the maximum diesel engine power feasible for a mobile frac unit, a larger pump is possible. The ability to deploy larger pumps would lead to fewer units required on a frac site. Fewer units on location translates to a lower total cost of ownership and operating cost.
Reciprocating pumps have many moving parts and so do the power systems that drive them. Replacing reciprocating pumps and their associated drive systems with a linear pump that is actuated electrically through a planetary thread drive provides many advantages. The linear pumping action is created by the movement of the screw through the electrically-powered planetary drive.
In a first embodiment of a linear pump (described in a co-pending PCT
Application No. W02017/139583), a linearly actuated double-action pump includes a centrally-disposed drive system coupled to two fluid ends at either end along the linear axis, where the drive system drives the plunger rod to move the fluid in both fluid ends. In an example embodiment, an electric linear pump may use a planetary screw drive (e.g., planetary gears surrounding a threaded rod to convert rotational motion of the planetary gears to the linear translation movement of the threaded rod) to linearly move (i.e., translate) plunger rods instead of the traditional diesel engines. The threaded rod coupled to the drive system has plunger sections
FIELD
The present disclosure relates to positive displacement pumps, and in particular, to a linear frac pump assembly with a folded configuration.
BACKGROUND
Large powerful pumps are commonly used for mining and oilfield applications, such as, for example, hydraulic fracturing. During hydraulic fracturing, fracturing fluid (i.e., cement, mud, frac sand and other material) is pumped at high pressures into a wellbore to cause the producing formation to fracture. One commonly used pump in hydraulic fracturing is a high-pressure reciprocating pump, like the SPM DestinyTM TWS 2500 frac pump or the SPM
QEM 3000 Continuous Duty Frac Pump, manufactured by S.P.M. Oil & Gas, a Caterpillar Company located in Fort Worth, Texas. In operation, the fracturing fluid is caused to flow into and out of a pump fluid chamber as a consequence of the reciprocation of a piston-like plunger respectively moving away from and toward the fluid chamber. As the plunger moves away from the fluid chamber, the pressure inside the chamber decreases, creating a differential pressure across an inlet valve, drawing the fracturing fluid through the inlet valve into the chamber. When the plunger changes direction and begins to move towards the fluid chamber, the pressure inside the chamber substantially increases closing the inlet valve increasing the differential pressure across an outlet valve and causes the outlet valve to open, enabling the highly pressurized fracturing fluid to discharge through the outlet valve into the wellbore.
A typical frac unit is powered with a diesel engine driving a frac pump through a multispeed transmission. The rotational energy transferred to the reciprocating frac pump is channeled to horizontal plunger bores for pumping via crankshafts and connector rods. The operating conditions are often extreme involving high fluid flow and high operating pressures (oftentimes up to 15,000 psi). Pressure fluctuations as seen in diesel powered units or other internal combustion-based units often cause undesirable cyclic stresses on components, shortening their lives.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of an embodiment of a linear pump according to the teachings of the present disclosure;
FIG. 2 is a cross-sectional view of an embodiment of a linear pump according to the teachings of the present disclosure;
FIG. 3 is a schematic cross-sectional view of an embodiment of the linear pump according to the teachings of the present disclosure; and FIG. 4 is a schematic cross-sectional view of an embodiment of a linear pump having a folded configuration according to the teachings of the present disclosure.
DETAILED DESCRIPTION
The introduction of natural gas as "free fuel" for frac operations has led to investigation of the best way to utilize natural gas to generate pumping power. One option is to use a large gas turbine generator that creates electrical power to run the frac job on electricity. Since electric drive is not limited to the maximum diesel engine power feasible for a mobile frac unit, a larger pump is possible. The ability to deploy larger pumps would lead to fewer units required on a frac site. Fewer units on location translates to a lower total cost of ownership and operating cost.
Reciprocating pumps have many moving parts and so do the power systems that drive them. Replacing reciprocating pumps and their associated drive systems with a linear pump that is actuated electrically through a planetary thread drive provides many advantages. The linear pumping action is created by the movement of the screw through the electrically-powered planetary drive.
In a first embodiment of a linear pump (described in a co-pending PCT
Application No. W02017/139583), a linearly actuated double-action pump includes a centrally-disposed drive system coupled to two fluid ends at either end along the linear axis, where the drive system drives the plunger rod to move the fluid in both fluid ends. In an example embodiment, an electric linear pump may use a planetary screw drive (e.g., planetary gears surrounding a threaded rod to convert rotational motion of the planetary gears to the linear translation movement of the threaded rod) to linearly move (i.e., translate) plunger rods instead of the traditional diesel engines. The threaded rod coupled to the drive system has plunger sections
2 on both ends such that when the plunger rod moves in either direction, one of the two ends will be pumping out fluids while the other drawing in fluids. In other embodiments, the electric actuator may be in the form of a winding that uses electric current to create a magnetic field to move the rod along its axis (e.g., similar to solenoid actuation). A fluid end is coupled with each of the two plunger ends to control fluid charging on the suction stroke and pressure discharge on the power stroke. The electricity supplied to the planetary thread drive may be provided from the grid or produced by an onsite generator using local natural gas, thus minimizing fuel costs.
In a second embodiment of the linear actuated pump 10 shown in FIGS. 1-3, a centrally-disposed fluid end 12 is coupled to two actuators 14 and 15 on its two sides along a linear axis.
The actuators 14 and 15 may be hydraulic or electro-mechanic actuators that are in fluid communication with a hydraulic/electrical-controlled drive system (not shown) that may incorporate a planetary screw drive or a solenoid drive system. The actuators 14 and 15 each drives or causes linear displacement of respective plungers 16 and 17 that reciprocate within their respective fluid bores defined within respective plunger housings 18 and 19. In this configuration, the stroke length of each plunger rod 16 and 17 can be halved and a smaller screw drive system may be employed and still achieve the same horsepower and fluid rate output when compared to the above-referenced double-action pump configuration.
In this more compact second configuration, the overall length of the pump assembly 10 is reduced by the size of one fluid end. Further, because of the shorter stroke length, it is easier to achieve and maintain accurate alignment of the fluid end and hydraulic drive components.
Within the fluid end 12 are an inlet and discharge valves 22 and 23 that regulate the intake and discharge of fluids from the pump through inlet and discharge ports (not explicitly shown).
The inlet port is connected to a manifold (not shown) that supplies the frac fluid and the discharge port is connected to a discharge line (not shown) that leads to a wellbore. According to an embodiment, multiple linear pumps can be fluidly coupled at the discharge lines to deliver a constant high-pressure flow to the wellhead.
In a third embodiment as shown in FIG. 4, the "legs" of a linear pump assembly 40, including the respective actuators 44 and 45, plunger pistons 46 and 47, and piston housings 48 and 49, are "folded" at the centrally-disposed fluid end 42 so that the "legs" become disposed proximate to and alongside each other. Same as before, the actuators 44 and 45 may
In a second embodiment of the linear actuated pump 10 shown in FIGS. 1-3, a centrally-disposed fluid end 12 is coupled to two actuators 14 and 15 on its two sides along a linear axis.
The actuators 14 and 15 may be hydraulic or electro-mechanic actuators that are in fluid communication with a hydraulic/electrical-controlled drive system (not shown) that may incorporate a planetary screw drive or a solenoid drive system. The actuators 14 and 15 each drives or causes linear displacement of respective plungers 16 and 17 that reciprocate within their respective fluid bores defined within respective plunger housings 18 and 19. In this configuration, the stroke length of each plunger rod 16 and 17 can be halved and a smaller screw drive system may be employed and still achieve the same horsepower and fluid rate output when compared to the above-referenced double-action pump configuration.
In this more compact second configuration, the overall length of the pump assembly 10 is reduced by the size of one fluid end. Further, because of the shorter stroke length, it is easier to achieve and maintain accurate alignment of the fluid end and hydraulic drive components.
Within the fluid end 12 are an inlet and discharge valves 22 and 23 that regulate the intake and discharge of fluids from the pump through inlet and discharge ports (not explicitly shown).
The inlet port is connected to a manifold (not shown) that supplies the frac fluid and the discharge port is connected to a discharge line (not shown) that leads to a wellbore. According to an embodiment, multiple linear pumps can be fluidly coupled at the discharge lines to deliver a constant high-pressure flow to the wellhead.
In a third embodiment as shown in FIG. 4, the "legs" of a linear pump assembly 40, including the respective actuators 44 and 45, plunger pistons 46 and 47, and piston housings 48 and 49, are "folded" at the centrally-disposed fluid end 42 so that the "legs" become disposed proximate to and alongside each other. Same as before, the actuators 44 and 45 may
3 be hydraulic or electro-mechanic actuators that are in fluid communication with a hydraulic/el ectri cal -con trol led drive system that incorporates a planetary screw drive or a solenoid drive system. In this "folded" configuration, the overall length of the linear pump assembly 40 is greatly reduced to about half of the embodiment shown in FIG.
3. The great reduction in overall length enables more flexibility with respect to the arrangement of multiple pump assemblies within a limited footprint, such as on a trailer bed that is typically 48 feet in length and up to 8 feet in width.
The linear pump assemblies described herein may operate under or with a control module (not explicitly shown) that include a computer with associated software installed therein, to cooperatively operate the drive system and hydraulic/electrical-mechanical actuators so that the fluid output from the fluid end is smooth with minimized fluid pulsation.
A number of sensors may be used to measure and monitor a variety of pump operating characteristics that are provided as input to the control module. The monitored pump characteristics may include, for example, fluid pressures, fluid flow rate, motor speed, etc.
In some embodiments, multiple pump assemblies, such as from two to six units, may be used for redundancy and configured to maintain a constant or steady output flow (i.e., smooth output). In different implementations, different plunger sizes and fluid end sizes (e.g., different product families) may be provided for a range of pressures needed for different applications.
In some examples, the motor used in the linear electric pump may be a permanent magnet synchronous motor. The bearing may be a spherical axial thrust bearing.
The planetary gears may be directly driving a threaded plunger rod without additional transmission assemblies. In some cases, the electric linear pump may have one or more sensors to measure the rotary position of the plunger rod or the planetary gears to determine position, speed, or other information of the plunger rod. The motor, gears or planetary gears, bearings, and the threaded rods may be enclosed within a housing for lubrication and cooling purposes. Cooling system is provided for both the electric motor and the driven gears thereof. A
logic control unit (LCU) may be used to accurately control the rotation of the motors and provide control according to control signals per control algorithm or programs. Detailed examples are provided below. One benefit of the electric motor-driven linear pumps described herein is much reduced noise generation than traditional operations using diesel engines and power ends.
3. The great reduction in overall length enables more flexibility with respect to the arrangement of multiple pump assemblies within a limited footprint, such as on a trailer bed that is typically 48 feet in length and up to 8 feet in width.
The linear pump assemblies described herein may operate under or with a control module (not explicitly shown) that include a computer with associated software installed therein, to cooperatively operate the drive system and hydraulic/electrical-mechanical actuators so that the fluid output from the fluid end is smooth with minimized fluid pulsation.
A number of sensors may be used to measure and monitor a variety of pump operating characteristics that are provided as input to the control module. The monitored pump characteristics may include, for example, fluid pressures, fluid flow rate, motor speed, etc.
In some embodiments, multiple pump assemblies, such as from two to six units, may be used for redundancy and configured to maintain a constant or steady output flow (i.e., smooth output). In different implementations, different plunger sizes and fluid end sizes (e.g., different product families) may be provided for a range of pressures needed for different applications.
In some examples, the motor used in the linear electric pump may be a permanent magnet synchronous motor. The bearing may be a spherical axial thrust bearing.
The planetary gears may be directly driving a threaded plunger rod without additional transmission assemblies. In some cases, the electric linear pump may have one or more sensors to measure the rotary position of the plunger rod or the planetary gears to determine position, speed, or other information of the plunger rod. The motor, gears or planetary gears, bearings, and the threaded rods may be enclosed within a housing for lubrication and cooling purposes. Cooling system is provided for both the electric motor and the driven gears thereof. A
logic control unit (LCU) may be used to accurately control the rotation of the motors and provide control according to control signals per control algorithm or programs. Detailed examples are provided below. One benefit of the electric motor-driven linear pumps described herein is much reduced noise generation than traditional operations using diesel engines and power ends.
4 The features of the present invention which are believed to be novel are set forth below with particularity in the appended claims. However, modifications, variations, and changes to the linear pump configurations described above will be apparent to those skilled in the art, and the linear actuated pump configuration described herein thus encompasses such modifications, variations, and changes and are not limited to the specific embodiments described herein.
5
Claims (19)
1. A linear frac pump assembly comprising:
a fluid end;
a first plunger rod having first and second ends, the first end being in fluid communication with the fluid end, and the second end being coupled to a first actuator, the first plunger rod being housed within a first plunger housing defining a first plunger bore, thc first plunger rod being configured for linear reciprocation within the first plunger bore driven by the first actuator;
a second plunger rod having first and second ends, the first end thereof being in fluid communication with the fluid end, and the second end being coupled to a second actuator, the second plunger rod being housed within a second plunger housing defining a second plunger bore, the second plunger rod being configured for linear reciprocation within the second plunger bore driven by the second actuator; and the first and second plunger bores being in in fluid communication with the fluid end and further being linear alignment with one another.
a fluid end;
a first plunger rod having first and second ends, the first end being in fluid communication with the fluid end, and the second end being coupled to a first actuator, the first plunger rod being housed within a first plunger housing defining a first plunger bore, thc first plunger rod being configured for linear reciprocation within the first plunger bore driven by the first actuator;
a second plunger rod having first and second ends, the first end thereof being in fluid communication with the fluid end, and the second end being coupled to a second actuator, the second plunger rod being housed within a second plunger housing defining a second plunger bore, the second plunger rod being configured for linear reciprocation within the second plunger bore driven by the second actuator; and the first and second plunger bores being in in fluid communication with the fluid end and further being linear alignment with one another.
2. The linear frac pump assembly of claim 1, wherein at least one of the first and second actuator comprises an electric motor.
3. The linear frac pump assembly of claim 1, wherein at least one of the first and second actuator comprises an electric motor configured to engage the respect at least one of the first and second plunger rod.
4. The linear frac pump assembly of claim 3, wherein one or more gears of the electric motor are driven by a planetary gear transmission receiving rotation input from an electrically powered rotor.
5. The linear frac pump assembly of claim 1, wherein the fluid cnd comprises an inlet valve disposed proximate to an inlet port, and a discharge valve disposed proximate to a discharge port.
6. The linear frac pump assembly of claim 1, wherein the first and second actuators are selected from the group consisting of hydraulic and electro-mechanical actuators.
7. A linear pump assembly comprising:
a fluid end;
a first plunger rod housed within a first plunger housing coupled to the fluid end, the first plunger rod having first and second ends, the first end being in fluid communication with the fluid end, and the second end being coupled to a first actuator; and a second plunger rod housed within a plunger housing coupled to the fluid end, the second plunger rod having first and second ends, the first end being in fluid communication with the fluid end, and the second end being coupled to a second actuator, the first and second plunger rods and housing in parallel alignment and alongside one another and are traveling in the same direction and in sync.
a fluid end;
a first plunger rod housed within a first plunger housing coupled to the fluid end, the first plunger rod having first and second ends, the first end being in fluid communication with the fluid end, and the second end being coupled to a first actuator; and a second plunger rod housed within a plunger housing coupled to the fluid end, the second plunger rod having first and second ends, the first end being in fluid communication with the fluid end, and the second end being coupled to a second actuator, the first and second plunger rods and housing in parallel alignment and alongside one another and are traveling in the same direction and in sync.
8. The linear frac pump assembly of claim 7, wherein the first and second actuators are selected from the group consisting of hydraulic and electro-mechanical actuators.
9. The linear pump assembly of claim 7, wherein at least one of the first and second actuator comprises an electric motor.
10. The linear pump assembly of claim 7, wherein at least one of the first and second actuator comprises an electric motor configured to engage the respect at least one of the first and second plunger rod.
11. The linear pump assembly of claim 9, wherein one or more gears of the electric motor are driven by a planetary gear transmission receiving rotation input from an electrically powered rotor.
12. The linear frac pump assembly of claim 7, wherein the fluid end comprises an inlet valve disposed proximate to an inlet port, and a discharge valve disposed proximate to a di scharge port.
13. A linear pump assembly comprising:
a fluid end having an inlet valve disposed proximate to an inlet port, and a discharge valve disposed proximate to a discharge port;
a first plunger rod housed within a first plunger housing, the first plunger rod having first and second ends, the first end being in fluid communication with the fluid end, and the second end being coupled to a first actuator; and a second plunger rod housed within a plunger housing, the second plunger rod having first and second ends, the first end being in fluid communication with the fluid end, and the second end being coupled to a second actuator, the first and second plunger rods and housings being coupled to the fluid end and the first and second plunger rods operate in sync to drive fluids inward from the inlet port and outward via the discharge port being regulated by the inlet and discharge valves.
a fluid end having an inlet valve disposed proximate to an inlet port, and a discharge valve disposed proximate to a discharge port;
a first plunger rod housed within a first plunger housing, the first plunger rod having first and second ends, the first end being in fluid communication with the fluid end, and the second end being coupled to a first actuator; and a second plunger rod housed within a plunger housing, the second plunger rod having first and second ends, the first end being in fluid communication with the fluid end, and the second end being coupled to a second actuator, the first and second plunger rods and housings being coupled to the fluid end and the first and second plunger rods operate in sync to drive fluids inward from the inlet port and outward via the discharge port being regulated by the inlet and discharge valves.
14. The linear pump assembly of claim 13, wherein the first and second plunger housings are in linear alignment.
15. The linear pump assembly of claim 13, wherein the first and second plunger housings are parallel and disposed alongside one another.
16. The linear pump assembly of claim 13, wherein at least one of the first and second actuator comprises an electric motor.
17. The linear pump assembly of claim 13, wherein at least one of the first and second actuator comprises an electric motor configured to engage the respect at least one of the first and second plunger rod.
18. The linear pump assembly of claim 17, wherein one or more gears of the electric motor arc driven by a planetary gear transmission receiving rotation input from an electrically powered rotor.
19. The linear pump assembly of claim 13, wherein at least one of the first and second actuator comprises an electric motor.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US202062987347P | 2020-03-09 | 2020-03-09 | |
| US62/987,347 | 2020-03-09 | ||
| PCT/US2021/021580 WO2021183569A1 (en) | 2020-03-09 | 2021-03-09 | Linear frac pump assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA3170922A1 true CA3170922A1 (en) | 2021-09-16 |
Family
ID=77671993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA3170922A Pending CA3170922A1 (en) | 2020-03-09 | 2021-03-09 | Linear frac pump assembly |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20230160375A1 (en) |
| CA (1) | CA3170922A1 (en) |
| MX (1) | MX2022011006A (en) |
| WO (1) | WO2021183569A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4177402A1 (en) * | 2021-11-03 | 2023-05-10 | Dai Pra' Srl | Device for the injection of fluids such as cement, resins and oxidizing agents for making special foundations and for soil consolidation and reclamation |
| US11955782B1 (en) | 2022-11-01 | 2024-04-09 | Typhon Technology Solutions (U.S.), Llc | System and method for fracturing of underground formations using electric grid power |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4470771A (en) * | 1982-08-20 | 1984-09-11 | Towler Hydraulics, Inc. | Quadraplex fluid pump |
| US5720415A (en) * | 1996-04-02 | 1998-02-24 | American Medical Systems, Inc. | Apparatus for delivering fluid at a controlled rate and pressure |
| US6976831B2 (en) * | 2003-06-25 | 2005-12-20 | Halliburton Energy Services, Inc. | Transmissionless variable output pumping unit |
| GB0520878D0 (en) * | 2005-10-14 | 2005-11-23 | Stamper Eric S | Improved pump |
| ITCO20120028A1 (en) * | 2012-05-16 | 2013-11-17 | Nuovo Pignone Srl | ELECTROMAGNETIC ACTUATOR FOR AN ALTERNATIVE COMPRESSOR |
| US20170067455A1 (en) * | 2014-02-26 | 2017-03-09 | Techni Waterjet Pty Ltd | Linear actuator |
| US20170292358A1 (en) * | 2016-04-12 | 2017-10-12 | Renergy Water Technologies Ltd. | System and method for pumping a particle-laden fluid, such as pressurized fracking fluid |
| NO20171099A1 (en) * | 2017-07-04 | 2019-01-07 | Rsm Imagineering As | Pressure transfer device and associated system, fleet and use, for pumping high volumes of fluids with particles at high pressures |
| WO2019164511A1 (en) * | 2018-02-23 | 2019-08-29 | Halliburton Energy Services, Inc. | Storage, transport, and delivery of well treatments |
| CA3079229C (en) * | 2018-04-16 | 2023-01-17 | St9 Gas And Oil, Llc | Electric drive pump for well stimulation |
| WO2019210260A1 (en) * | 2018-04-27 | 2019-10-31 | Ameriforge Group Inc. | Well service pump system and method of operating the same |
| US20210190053A1 (en) * | 2018-08-17 | 2021-06-24 | S.P.M. Flow Control, Inc. | Actuator for a reciprocating pump |
| US20200362838A1 (en) * | 2019-05-17 | 2020-11-19 | Schaeffler Technologies AG & Co. KG | Electric linear-actuator pumping system |
| US11396868B2 (en) * | 2020-03-09 | 2022-07-26 | Schaeffler Technologies AG & Co. KG | Linear actuator pumping system |
-
2021
- 2021-03-09 US US17/905,588 patent/US20230160375A1/en active Pending
- 2021-03-09 CA CA3170922A patent/CA3170922A1/en active Pending
- 2021-03-09 WO PCT/US2021/021580 patent/WO2021183569A1/en active Application Filing
- 2021-03-09 MX MX2022011006A patent/MX2022011006A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| US20230160375A1 (en) | 2023-05-25 |
| WO2021183569A1 (en) | 2021-09-16 |
| MX2022011006A (en) | 2022-10-07 |
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