An electric drive ultra-large displacement cementing equipment

Abstract

The present invention discloses an electric drive ultra-large displacement cementing equipment, which includes a first carrier and a second carrier. An auxiliary motor, a main motor, a fresh water module, a pumping module, a control module, a hydraulic module and a mixing module are fixedly loaded on the first carrier, and a frequency converter module is fixedly loaded on the second carrier. Beneficial effects: The main motor is used to drive the piston pump, reducing the setting of the torque converter and increasing the layout space of the whole vehicle. The auxiliary motor is used to drive the hydraulic system of the whole vehicle, reducing the number of drive motors; The frequency converter module is separately loaded from the cementing equipment, reducing the loading requirements, with a simpler structure and less occupied space. One frequency converter module can supply power to each module on multiple first carriers at the same time, making it flexible to use; The main motor, the auxiliary motor and the hydraulic cooling device are centrally distributed at the front of the first carrier, with simple wiring and convenient connection. The equipment is centrally cooled, avoiding scalding accidents during the operation of the staff and increasing the operation safety.

Description

Technical Field

[0001] The present invention relates to the technical field of oil equipment, and particularly to an electric-driven ultra-large displacement cementing device. Background Art

[0002] Nowadays, the development technology of shale gas is becoming more and more mature, the drilling depth of the well site is getting deeper and deeper, and the high-pressure and large-displacement operating environment can no longer be achieved by conventional single-pump and double-pump cementing equipment. It is necessary to simultaneously start multiple cementing equipment to meet the requirements for larger displacement and higher pressure. When the conventional cementing equipment operates, the power is driven by the vehicle-mounted diesel engine through the torque converter by the transmission shaft to drive the piston pump, and the vehicle hydraulic system is driven by the vehicle chassis engine. The selection of the diesel engine and the torque converter is difficult, the cost is high, and it is not easy to maintain. Moreover, the diesel engine and the torque converter are heavy and occupy a large volume, which is not conducive to the overall vehicle layout, restricts the selection of the chassis vehicle, and the cementing equipment is highly dependent on the chassis vehicle. At the same time, the diesel engine has high noise, large emissions, and high fuel consumption, polluting the environment. Although electric-driven cementing equipment has appeared at present, it is necessary to set up a vehicle-mounted power distribution cabinet, supply power through the power distribution cabinet, and provide power for the vehicle-mounted devices through multiple motors. The wiring is complex and the cementing cost is high. And because the temperature of the motor is relatively high during operation, and multiple motors are scattered on the vehicle body, it is easy to be scalded by accidental touch during the cementing operation of the operator, resulting in danger. Summary of the Invention

[0003] The object of the present invention is to overcome the deficiencies of the prior art and provide an electric-driven ultra-large displacement cementing device. The main motor is used to replace the vehicle-mounted diesel engine to drive the piston pump, reducing the setting of the torque converter and increasing the overall vehicle layout space. The auxiliary motor is used to replace the vehicle chassis engine to drive the vehicle hydraulic system, and then drive devices such as the first clean water pump, the second clean water pump, the first sand pump, the second sand pump, the hydraulic cooling device and the agitator, reducing the number of driving motors. At the same time, the dependence of the cementing equipment on the chassis vehicle can be reduced; the frequency converter module is separately loaded from the cementing equipment, reducing the loading requirements, with a simpler structure and less occupied space. One frequency converter module can simultaneously supply power to each module on multiple first carriers, with flexible use. The frequency converter module can directly use power supplies such as the national power grid, the well site, and the turbine generator, with low noise, zero emissions, and environmental friendliness; the main motor, the auxiliary motor and the hydraulic cooling device are centrally distributed at the front of the first carrier, with simple wiring, convenient connection, and centralized heat dissipation of the equipment, avoiding scalding accidents during the operation of the staff and increasing the operation safety.

[0004] The object of the present invention is achieved by the following technical measures: An electric-driven ultra-large displacement cementing device, comprising a first carrier and a second carrier. An auxiliary motor, a main motor, a fresh water module, a pumping module, a control module, a hydraulic module and a mixing module are fixedly loaded on the first carrier. A frequency converter module is fixedly loaded on the second carrier. The frequency converter module supplies power to the auxiliary motor, the main motor and the control module. The main motor provides power for the pumping module. The auxiliary motor provides power for the fresh water module and the mixing module through the hydraulic module.

[0005] Further, the main motor and the auxiliary motor are centrally distributed at the front of the first carrier.

[0006] Further, the pumping module comprises a piston pump, the piston pump is connected with the main motor. The fresh water module comprises a first fresh water pump and a second fresh water pump. The mixing module comprises a first sand pump, a second sand pump and a stirrer. The auxiliary motor provides power for the first fresh water pump, the second fresh water pump, the first sand pump, the second sand pump and the stirrer through the hydraulic module.

[0007] Further, the hydraulic module comprises a hydraulic pump, a hydraulic motor and a hydraulic heat dissipation device. The hydraulic pump and the hydraulic heat dissipation device are centrally distributed at the front of the first carrier. The auxiliary motor is connected with the hydraulic pump. The hydraulic pump is respectively connected with the hydraulic heat dissipation device, the first fresh water pump, the second fresh water pump, the first sand pump, the second sand pump and the stirrer through the hydraulic motor.

[0008] Further, the piston diameter of the piston pump is greater than or equal to 3.5 inches, the number of pistons of the piston pump is more than three cylinders, and the power of the piston pump is greater than or equal to 1000 hp.

[0009] Further, there is 1 or 2 piston pumps. When there is 1 piston pump, the piston pump is connected with the main motor. When there are 2 piston pumps, the main motor can also be 1 or 2. When there is 1 main motor, the main motor is connected with the 2 piston pumps through a power take-off box. When there are 2 main motors, the 2 main motors are respectively connected with the 2 piston pumps.

[0010] Further, the mixing module further comprises a slurry mixing tank, a first mixer and a second mixer. The fresh water module further comprises a metering tank. The metering tank is respectively connected with the inlet ends of the first mixer and the second mixer through the first fresh water pump and the second fresh water pump. The outlet ends of the first mixer and the second mixer are respectively connected with the inlet end of the slurry mixing tank. The inlet ends of the first mixer and the second mixer are also respectively connected with a cement feeding manifold. The outlet end of the slurry mixing tank is respectively connected with the piston pump through the first sand pump and the second sand pump. The stirrer is used for stirring the slurry in the slurry mixing tank.

[0011] Furthermore, the control module is connected to the frequency converter module.

[0012] Furthermore, a speed sensor is provided on the main motor, and the speed sensor is used to monitor the speed of the main motor and feed the speed back to the control module.

[0013] Furthermore, the cementing equipment may include multiple first loading carriers, and the inverter module may simultaneously supply power to the auxiliary motors, main motors and control modules on the multiple first loading carriers.

[0014] Furthermore, the first loading vehicle and / or the second loading vehicle is a vehicle-mounted chassis, a semi-trailer chassis, or a skid-mounted chassis.

[0015] Compared with the prior art, the present invention has the following beneficial effects: the electric-driven ultra-large displacement cementing equipment adopts a main motor to replace the on-board diesel engine to drive the plunger pump, thereby reducing the torque converter setting and increasing the layout space of the entire vehicle; an auxiliary motor is adopted to replace the automobile chassis engine to drive the entire vehicle hydraulic system, thereby driving the first clean water pump, the second clean water pump, the first sand pump, the second sand pump, the hydraulic heat dissipation device and the agitator, etc., thereby reducing the number of drive motors and reducing the dependence of the cementing equipment on the chassis vehicle; the inverter module is loaded separately from the cementing equipment, which reduces the loading requirements, has a simpler structure, and reduces the space occupied; one inverter module can simultaneously power multiple modules on the first loading carrier, which is flexible to use; the inverter module can be directly powered by the national power grid, the well site, the turbine generator, etc., with low noise, zero emissions, and green environmental protection; the main motor, auxiliary motor and hydraulic heat dissipation device are concentratedly distributed at the front of the first loading carrier, which is simple in wiring and convenient for connection. The equipment dissipates heat in a centralized manner, avoids scalding accidents during operation of the staff, and increases operational safety.

[0016] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the first carrier.

[0018] Figure 2 It is a structural diagram of the second carrier.

[0019] Among them, 1. mixing module, 2. control module, 3. pumping module, 4. clean water module, 5. main motor, 6. auxiliary motor, 7. first carrier, 8. inverter module, 9. second carrier. DETAILED DESCRIPTION

[0020] like Figure 1 and 2As shown in the figure, an electric drive ultra-large displacement cementing equipment includes a first carrier 7 and a second carrier 9. An auxiliary motor 6, a main motor 5, a fresh water module 4, a pumping module 3, a control module 2, a hydraulic module and a mixing module 1 are fixedly loaded on the first carrier 7. A lubrication module and a gas circuit module are also loaded on the first carrier 7. A frequency converter module 8 is fixedly loaded on the second carrier 9. The frequency converter module 8 supplies power to the auxiliary motor 6, the main motor 5, the control module 2, the lubrication module and the gas circuit module loaded on the first carrier 7. The main motor 5 provides power for the pumping module 3. The auxiliary motor 6 provides power for the fresh water module 4 and the mixing module 1 through the hydraulic module. The main motor 5 is used to drive the pumping module 3, reducing the setting of the torque converter and increasing the layout space. The auxiliary motor 6 is used to drive the vehicle hydraulic module, and then drive devices such as the first fresh water pump, the second fresh water pump, the first sand pump, the second sand pump, the hydraulic cooling device and the agitator, reducing the number of drive motors and lowering the cementing operation cost. The frequency converter module 8 is used to supply power to the cementing equipment. The carrier chassis truck can be an electric drive or a diesel drive chassis truck, reducing the dependence of the cementing equipment on the chassis truck. The frequency converter module 8 is separately loaded from the cementing equipment, reducing the loading requirements, having a simpler structure, occupying less space. The frequency converter module 8 can directly use power supplies such as the national power grid, the well site, and the turbine generator, with low noise, zero emissions, and being green and environmentally friendly.

[0021] The pumping module 3 includes a piston pump, and the piston pump is connected to the main motor 5. The fresh water module 4 includes a first fresh water pump and a second fresh water pump. The mixing module 1 includes a first sand pump, a second sand pump and an agitator. The auxiliary motor 6 provides power for the first fresh water pump, the second fresh water pump, the first sand pump, the second sand pump and the agitator through the hydraulic module. The hydraulic module includes a hydraulic pump, a hydraulic motor and a hydraulic cooling device. The auxiliary motor 6 is connected to the hydraulic pump. The hydraulic pump is respectively connected to the hydraulic cooling device, the first fresh water pump, the second fresh water pump, the first sand pump, the second sand pump and the agitator through the hydraulic motor. Specifically, there are multiple hydraulic pumps and multiple hydraulic motors. The auxiliary motor 6 is connected to multiple hydraulic pumps through a power take-off box, and multiple hydraulic pumps are connected to multiple hydraulic motors. One auxiliary motor 6 can simultaneously drive the first fresh water pump, the second fresh water pump, the first sand pump, the second sand pump, the agitator and the hydraulic cooling device. The chassis truck can be an electric drive or a diesel drive chassis truck, reducing the dependence of the cementing equipment on the chassis truck. <000> <000>

[0022] The main motor 5, auxiliary motor 6, hydraulic pump and hydraulic cooling device are centrally distributed at the front of the first carrier 7. Specifically, the front of the first carrier 7 refers to the front of the first carrier 7 in the traveling direction. The main motor 5 and the auxiliary motor 6 are centrally arranged, with simple wiring and convenient connection. The main motor 5, auxiliary motor 6, hydraulic pump and hydraulic cooling device are cooled centrally, avoiding accidental contact and scalding accidents during the operation of the staff, increasing the operation safety, and at the same time being convenient for maintenance.

[0023] The plunger diameter of the plunger pump is greater than or equal to 3.5 inches, the number of plungers of the plunger pump is more than three cylinders, and the power of the plunger pump is greater than or equal to 1000 hp. By increasing the plunger diameter and using a high-power plunger pump, the displacement and pressure of the plunger pump are increased, so as to meet the operation requirements of high pressure and large displacement.

[0024] There is 1 or 2 plunger pumps. When there is 1 plunger pump, the plunger pump is connected to the main motor 5; when there are 2 plunger pumps, the main motor 5 can also be 1 or 2. When the main motor 5 is 1, the main motor 5 is connected to the 2 plunger pumps through a power take-off box. When the main motor 5 is 2, the 2 main motors 5 are respectively connected to the 2 plunger pumps in one-to-one correspondence. The number of plunger pumps can be selected according to the actual working condition displacement requirements, and the number of main motors 5 can be selected according to the power of the plunger pump.

[0025] The mixing module 1 further includes a slurry mixing tank, a first mixer, and a second mixer. The clean water module 4 further includes a metering tank. The metering tank is respectively connected to the inlet ends of the first mixer and the second mixer through a first clean water pump and a second clean water pump. The outlet ends of the first mixer and the second mixer are respectively connected to the inlet end of the slurry mixing tank. The inlet ends of the first mixer and the second mixer are also respectively connected to a cement feeding manifold. The outlet end of the slurry mixing tank is respectively connected to the plunger pump through a first sand pump and a second sand pump. The stirrer is used to stir the slurry in the slurry mixing tank. By using two mixers to mix cement slurry simultaneously, the mixing capacity of the mixing module 1 is increased to more than 1.5 times that of a conventional single mixer mixing system, with high mixing efficiency and stable cement slurry supply ensured.

[0026] The control module 2 is connected to the frequency converter module 8. Specifically, the control module 2 includes a touch screen, a remote control system, and a PLC controller. The touch screen is used to display the operation information of the cementing equipment and send control instructions to the PLC controller. The remote control system is used for remote monitoring and control of the entire cementing equipment. The PCL controller is connected to the frequency converter module through an Ethernet cable. The PCL controller receives the control instructions sent by the touch screen or the remote control system, and then transmits the control instructions to the frequency converter module 8. The frequency converter module 8 controls the rotation speed of the main motor 5 or the auxiliary motor 6 according to the control instructions.

[0027] A speed sensor is provided on the main motor 5, and the speed sensor is used to monitor the speed of the main motor 5 and feedback the speed to the control module 2. The cementing equipment realizes that the main motor 5 drives the plunger pump to reach the set displacement by setting the speed of the main motor 5. Specifically, the frequency converter module 8 receives the control instruction of the control module 2 and drives the main motor 5 to rotate according to the control instruction. The main motor 5 drives the plunger pump to operate. At the same time, the speed sensor on the main motor 5 feeds back the monitored speed information of the main motor 5 to the control module 2. The control module 2 compares the monitored speed information with the pre-set speed information to realize the adjustment of the speed of the main motor 5, and further realizes the control of the displacement of the plunger pump.

[0028] The cementing equipment may include multiple first carriers 7, and the frequency converter module 8 can supply power to the auxiliary motors 6, the main motor 5 and the control module 2 on the multiple first carriers 7 at the same time. One frequency converter module 8 can supply power to multiple first carriers 7 at the same time, which is flexible to use, reduces the cementing operation space and lowers the cementing cost.

[0029] The first carrier 7 and / or the second carrier 9 is a vehicle chassis or a semi-trailer chassis or a skid-mounted chassis. The structural forms of the first carrier 7 and / or the second carrier 9 can be flexibly selected according to the cementing operation requirements, and the application range is wide.

[0030] Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric drive ultra-large displacement cementing equipment, characterized in that: It includes a first carrier and a second carrier. An auxiliary motor, a main motor, a clean water module, a pumping module, a control module, a hydraulic module and a mixing module are fixedly loaded on the first carrier. A frequency converter module is fixedly loaded on the second carrier. The frequency converter module supplies power to the auxiliary motor, the main motor and the control module. The main motor provides power for the pumping module. The auxiliary motor provides power for the clean water module and the mixing module through the hydraulic module. The main motor and the auxiliary motor are centrally distributed at the front in the traveling direction of the first carrier. The clean water module includes a first clean water pump and a second clean water pump. The mixing module includes a first sand pump, a second sand pump and a stirrer. Among them, one auxiliary motor provides power for the first clean water pump, the second clean water pump, the first sand pump, the second sand pump and the stirrer through the hydraulic module.

2. The electric drive ultra-large displacement cementing equipment according to claim 1, wherein: The pumping module includes a piston pump, and the piston pump is connected to the main motor.

3. The electric drive ultra-large displacement cementing equipment according to claim 2, characterized in that: The hydraulic module includes a hydraulic pump, a hydraulic motor and a hydraulic heat dissipation device. The hydraulic pump and the hydraulic heat dissipation device are centrally distributed at the front of the first carrier. The auxiliary motor is connected to the hydraulic pump. The hydraulic pump is respectively connected to the hydraulic heat dissipation device, the first clean water pump, the second clean water pump, the first sand pump, the second sand pump and the stirrer through the hydraulic motor.

4. The electric drive ultra-large displacement cementing equipment according to claim 2, characterized in that: The piston diameter of the piston pump is greater than or equal to 3.5 inches, the number of pistons of the piston pump is more than three cylinders, and the power of the piston pump is greater than or equal to 1000 hp.

5. The electric drive ultra-large displacement cementing equipment according to claim 2, wherein: There is 1 or 2 piston pumps. When there is 1 piston pump, the piston pump is connected to the main motor; when there are 2 piston pumps, the number of main motors is 1 or 2. When there is 1 main motor, the main motor is connected to the 2 piston pumps through a power take-off box. When there are 2 main motors, the 2 main motors are respectively connected to the 2 piston pumps.

6. The electric drive ultra-large displacement cementing equipment according to claim 2, characterized in that: The mixing module further includes a mud mixing tank, a first mixer and a second mixer. The clean water module further includes a metering tank. The metering tank is respectively connected to the inlet ends of the first mixer and the second mixer through the first clean water pump and the second clean water pump. The outlet ends of the first mixer and the second mixer are respectively connected to the inlet end of the mud mixing tank. The inlet ends of the first mixer and the second mixer are also respectively connected to a cement feeding manifold. The outlet end of the mud mixing tank is respectively connected to the piston pump through the first sand pump and the second sand pump. The stirrer is used for stirring the mixed slurry in the mud mixing tank.

7. The electric drive ultra-large displacement cementing equipment according to claim 1, characterized in that: The control module is connected to the frequency converter module.

8. The electric drive ultra-large displacement cementing equipment according to claim 1, characterized in that: A speed sensor is provided on the main motor. The speed sensor is used for monitoring the speed of the main motor and feeding back the speed to the control module.

9. The electric drive ultra-large displacement cementing equipment according to claim 1, wherein: The cementing equipment includes multiple first carriers, and the frequency converter module supplies power to the auxiliary motors, main motors and control modules on multiple first carriers at the same time.

10. The electric drive ultra-large displacement cementing equipment according to claim 1, characterized in that: The first carrier and / or the second carrier is a vehicle chassis or a semi-trailer chassis or a skid-mounted chassis.

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