CN218479883U

CN218479883U - Fracturing acidizing well cementation pump

Info

Publication number: CN218479883U
Application number: CN202221908171.0U
Authority: CN
Inventors: 李天降; 夏世昌; 王雅东
Original assignee: Hubei Oil And Gas Drilling And Production Equipment Industry Technology Research Institute Co ltd
Current assignee: Hubei Oil And Gas Drilling And Production Equipment Industry Technology Research Institute Co ltd
Priority date: 2022-07-21
Filing date: 2022-07-21
Publication date: 2023-02-14
Anticipated expiration: 2032-07-21

Abstract

The utility model discloses a fracturing acidizing well cementation pump, including fixed subassembly, fixed subassembly includes the pump body and support, conveying assembly is installed to one side of the pump body, conveying assembly includes the exit tube and advances the pipe, drive assembly is installed to the opposite side of the pump body, drive assembly includes motor and main shaft, install torque adjustment assembly on the main shaft, torque adjustment assembly includes gear one and thorn ratchet wheel, steady pumping subassembly is installed to the inboard of the pump body, and this fracturing acidizing well cementation pump can adjust work torsion according to the required pressure of cement of carrying in to the well, improves pumping speed when delivery pressure is lower, improves pumping torque when delivery pressure is higher, can avoid stone and sand grain card in the cement between the inner wall of piston and pump body, reduces the wearing and tearing of stone and sand grain to the piston and the pump body to guarantee the continuity of pumping, improve pumping efficiency, the pumping is suitable for the interior pumping of the oil well behind the fracturing acidizing and solidifies cement work and uses.

Description

Fracturing acidizing well cementation pump

Technical Field

The utility model relates to a fracturing acidizing well cementation pump equipment technical field specifically is a fracturing acidizing well cementation pump.

Background

In oil exploitation, an oil well needs to be opened by a fracturing and acidizing technology, so that a well bore is irregular in shape, cement needs to be injected between the well bore and an equipment pipe sleeve for solidification and sealing, and then fracturing and acidizing well cementation pump equipment needs to be used.

Therefore, how to design a fracturing acidizing well cementation pump becomes a problem to be solved currently.

SUMMERY OF THE UTILITY MODEL

The utility model relates to a not enough to prior art exists, the utility model aims at providing a fracturing acidizing well cementation pump to solve the problem that proposes in the above-mentioned background art, the utility model relates to a rationally, it is comparatively convenient during the use, be applicable to the interior pump-feed solidification cement work of oil well after the fracturing acidizing and use.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a fracturing acidizing well cementation pump, includes the well cementation pump body, the well cementation pump body is including fixed subassembly, fixed subassembly includes the pump body and support, delivery assembly is installed to one side of the pump body, delivery assembly includes the exit tube and advances the pipe, drive assembly is installed to the opposite side of the pump body, drive assembly includes motor and main shaft, install the moment of torsion adjusting part on the main shaft, the moment of torsion adjusting part includes gear one and thorn ratchet, steady pumping subassembly is installed to the inboard of the pump body, steady pumping subassembly includes bent axle and piston.

Further, the inboard of the pump body has seted up the inner chamber, the quantity of inner chamber is 3, advance the pipe and be linked together through check valve and inner chamber, the inner chamber is linked together through check valve and exit tube.

Further, the motor is installed at the top of the support through a bolt, one end of the main shaft is installed on an output shaft of the motor through a bolt, the gear is sleeved on the outer side of one end of the main shaft, and the ratchet wheel is installed on the outer side of the other end of the main shaft through a bolt.

Furthermore, one end of the crankshaft is arranged on the outer side of the pump body, the other end of the crankshaft penetrates through the three inner cavities and extends to the outer side of the pump body, and the crankshaft is mounted on the inner side of the pump body through a bearing.

Further, gear two is installed through the bolt to the one end of bent axle, gear three is installed through the bolt to the other end of bent axle, gear one and the meshing of gear two phase, the meshing of thorn ratchet and gear three phase, gear one equals with the diameter and the number of teeth of gear two, the diameter and the number of teeth of thorn ratchet are less than the diameter and the number of teeth of gear three.

Furthermore, a sliding sleeve is welded on one side of the first gear, pin holes are formed in the sliding sleeve and the main shaft, and a clamping pin is clamped on the inner side of each pin hole.

Furthermore, a piston is clamped on the inner side of the inner cavity, the outer diameter of the piston is equal to the inner diameter of the inner cavity, a connecting rod is arranged on the inner side of the inner cavity, one end of the connecting rod is mounted on the crankshaft through a bearing, and the other end of the connecting rod is mounted on the piston through a rotating shaft.

Furthermore, a cambered surface has been seted up to one side of inner chamber, install the switch through the bolt on the pump body, the switch passes through the electric wire and is connected with the motor.

Has the advantages that: 1. the fracturing and acidizing well cementation pump is provided with a pump body, an outlet pipe, an inlet pipe, a motor, a main shaft, a first gear, a first ratchet wheel, a crankshaft, a second gear, a third gear, a piston, a connecting rod, a sliding sleeve, a clamping pin and an arc surface, and can effectively adjust working torque according to pressure required by cement conveying into a well hole when working, so that the pumping speed can be increased when the pressure for conveying cement into the well hole is low, the pumping pressure is increased when cement conveying into the well hole is high, and the working requirements required by cement pumping are met.

2. The fracturing and acidizing well cementation pump is provided with a pump body, an outlet pipe, an inlet pipe, a motor, a main shaft, a gear I, a ratchet wheel, a crankshaft, a gear II, a gear III, a piston, a connecting rod, a sliding sleeve, a clamping pin, an arc surface and a switch, when cement is pumped, stones and sand grains in the cement can be effectively prevented from being clamped on the inner walls of the piston and the pump body, abrasion of the stones and the sand grains to the piston and the pump body is effectively reduced, the service life of equipment is guaranteed, the continuity of cement pumping is effectively guaranteed, and the pumping efficiency is improved.

3. The fracturing-acidizing well cementing pump is reasonable in design, efficient and convenient to use, and suitable for pumping solidified cement in a fractured-acidized oil well.

Drawings

FIG. 1 is a schematic structural view of a fracturing acidizing cementing pump of the utility model;

FIG. 2 is a cross-sectional view of a frac acidizing well cementing pump of the present invention;

fig. 3 is a schematic structural diagram of a crankshaft of a fracturing acidizing well cementation pump of the utility model;

in the figure: 1. a pump body; 2. discharging a pipe; 3. feeding a pipe; 4. a motor; 5. a main shaft; 6. a first gear; 7. a ratchet wheel; 8. a crankshaft; 9. a second gear; 10. a third gear; 11. a piston; 12. a connecting rod; 13. a sliding sleeve; 14. a bayonet lock; 15. a cambered surface; 16. and (4) switching.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 3, the present invention provides a technical solution: a fracturing and acidizing well cementing pump comprises a well cementing pump body, wherein the well cementing pump body comprises a fixing assembly, the fixing assembly comprises a pump body 1 and a support, one side of the pump body 1 is provided with a conveying assembly, the conveying assembly comprises an outlet pipe 2 and an inlet pipe 3, the other side of the pump body 1 is provided with a driving assembly, the driving assembly comprises a motor 4 and a main shaft 5, the main shaft 5 is provided with a torque adjusting assembly, the torque adjusting assembly comprises a first gear 6 and a ratchet wheel 7, the inner side of the pump body 1 is provided with a stable pumping assembly, the stable pumping assembly comprises a crankshaft 8 and a piston 11, the inner side of the pump body 1 is provided with inner cavities, the number of the inner cavities is 3, the inlet pipe 3 is communicated with the inner cavities through a one-way valve, the inner cavities are communicated with the outlet pipe 2 through a one-way valve, and the motor 4 is arranged at the top of the support through bolts, one end of the main shaft 5 is mounted on an output shaft of the motor 4 through a bolt, the first gear 6 is sleeved on the outer side of one end of the main shaft 5, the ratchet wheel 7 is mounted on the outer side of the other end of the main shaft 5 through a bolt, one end of the crankshaft 8 is arranged on the outer side of the pump body 1, the other end of the crankshaft 8 penetrates through three inner cavities and extends to the outer side of the pump body 1, the crankshaft 8 is mounted on the inner side of the pump body 1 through a bearing, when cement is pumped, the motor 4 drives the crankshaft 8 to rotate through the meshing of the first gear 6 and the second gear 9 or the third gear 7 and the third gear 10, the crankshaft 8 drives three pistons 11 to reciprocate through a connecting rod 12, so that the inner cavities suck the cement from the inlet pipe 3 through a one-way valve and extrude the cement into the outlet pipe 2 through the one-way valve, the three pistons 11 alternately and continuously suck and extrude cement, so that the continuity of cement pumping is guaranteed, and the pumping efficiency is improved.

This embodiment, two 9 gears are installed through the bolt to the one end of bent axle 8, three 10 gears are installed through the bolt to the other end of bent axle 8, gear 6 meshes with two 9 gears mutually, gear 7 meshes with three 10 gears mutually, gear 6 equals with the diameter and the number of teeth of two 9 gears, the diameter and the number of teeth of gear 7 are less than the diameter and the number of teeth of three 10 gears, the welding of one side of gear 6 has sliding sleeve 13, the pinhole has all been seted up on sliding sleeve 13 and the main shaft 5, the inboard card of pinhole has bayonet lock 14, the inboard card of inner chamber has piston 11, piston 11's outer warp equals the internal diameter of inner chamber, the inboard of inner chamber is provided with connecting rod 12, the one end of connecting rod 12 is passed through the bearing and is installed on bent axle 8, the other end of connecting rod 12 is installed on piston 11 through the pivot, when the pressure required for conveying cement into a borehole is low, firstly, the bayonet 14 is screwed out from the sliding sleeve 13, then the gear I6 moves towards the pump body 1 through the sliding sleeve 13, at the moment, the gear I6 is meshed with the gear II 7, the sliding sleeve 13 is fixed with the main shaft 4 through the bayonet 14, the switch 16 is opened, the motor 4 drives the gear I6 through the main shaft 5, the crankshaft 8 is driven to rotate through the meshing of the gear I6 and the gear II 9, and then the piston 11 is driven to pump cement through the crankshaft 8, so that the crankshaft 8 can drive the piston 11 to reciprocate through fast rotation, the pumping speed can be increased when the pressure for conveying cement into the borehole is low, the gear III 10 cannot be subjected to the resistance of the ratchet wheel 7 during rotation, when the pressure required for conveying cement into the borehole is high, the gear I6 moves towards the motor 4 through the sliding sleeve 13, and the gear I6 is separated from the gear II 9, when the switch 16 is turned on, the motor 4 drives the ratchet wheel 7 to rotate through the main shaft 5, the ratchet wheel 7 drives the crankshaft 8 to rotate through meshing with the three gears 10, the rotating torque of the crankshaft 8 is effectively increased, the pushing pressure of the piston 11 on cement is further improved, the pumping pressure of the cement is improved, and the working requirement for pumping the cement is met.

In this embodiment, an arc surface 15 is formed on one side of the inner cavity, a switch 16 is installed on the pump body 1 through a bolt, the switch 16 is connected with the motor 4 through an electric wire, when the piston 11 extrudes cement into the outlet pipe 2 through the inner cavity in the pump body 1, when stones and sand in the cement are pushed to the arc surface on the right side of the inner cavity by the piston 11, the stones and the sand change moving directions along the inner wall of the arc surface 15 and enter the outlet pipe 2 through a one-way valve, the stones and the sand are prevented from being accumulated on the inner side of the pump body 1, the stones and the sand in the cement are prevented from being clamped between the piston 11 and the inner wall of the pump body 1, abrasion of the stones and the sand to the piston 11 and the pump body 1 is effectively reduced, and the service life of the device is guaranteed.

When the fracturing acidizing well cementing pump is used, when the pressure required for conveying cement into a well is low, the clamping pin 14 is firstly screwed out of the sliding sleeve 13, the gear I6 is moved to the pump body 1 through the sliding sleeve 13, the gear I6 is meshed with the gear II 7 at the moment, the sliding sleeve 13 is fixed with the spindle 4 through the clamping pin 14, the switch 16 is opened, the motor 4 drives the gear I6 through the spindle 5, the crankshaft 8 is driven to rotate through the meshing of the gear I6 and the gear II 9, the crankshaft 8 drives the piston 11 to pump cement, the crankshaft 8 can drive the piston 11 to reciprocate through quick rotation, the pumping rate can be improved when the pressure for conveying cement into the well is low, the gear III 10 cannot be subjected to the resistance of the ratchet wheel 7 when rotating, when the pressure required for conveying cement into the well is high, the first gear 6 moves to the motor 4 through the sliding sleeve 13, the first gear 6 is separated from the second gear 9, the switch 16 is opened, the motor 4 drives the ratchet wheel 7 to rotate through the main shaft 5, the ratchet wheel 7 drives the crankshaft 8 to rotate through meshing with the third gear 10, the rotating torque of the crankshaft 8 is effectively increased, the pushing pressure of the piston 11 on cement is further increased, the pumping pressure of the cement is increased, and the required work requirement of pumping the cement is guaranteed, the motor 4 drives the crankshaft 8 to rotate through meshing of the first gear 6 and the second gear 9 or meshing of the ratchet wheel 7 and the third gear 10, the crankshaft 8 drives the three pistons 11 to reciprocate through the connecting rod 12, so that the cement is sucked into the inner cavity from the inlet pipe 3 through the one-way valve and is extruded into the outlet pipe 2 through the one-way valve, and the three pistons 11 alternately and continuously suck and extrude the cement, guarantee the continuity of cement pump sending, the pumping efficiency is improved, when piston 11 extrudes cement through the inner chamber in the pump body 1 to in the play of pipe 2, stone and sand grain in the cement are when being promoted the arc surface on inner chamber right side by piston 11, stone and sand grain change direction of movement along the inner wall of cambered surface 15, and enter into in the play of pipe 2 through the check valve, avoid stone and sand grain to pile up the inboard at the pump body 1, avoid stone and sand grain card in the cement between the inner wall of piston 11 and pump body 1, and then reduce the wearing and tearing of stone and sand grain to piston 11 and pump body 1 effectively, guarantee the working life of equipment.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a fracturing acidizing well cementation pump, includes the well cementation pump body, the well cementation pump body is including fixed subassembly, fixed subassembly includes the pump body (1) and support, delivery assembly is installed to one side of the pump body (1), delivery assembly includes exit tube (2) and advances pipe (3), drive assembly is installed to the opposite side of the pump body (1), drive assembly includes motor (4) and main shaft (5), its characterized in that: install the torque adjustment subassembly on main shaft (5), the torque adjustment subassembly includes gear (6) and ratchet wheel (7), steady pumping subassembly is installed to the inboard of the pump body (1), steady pumping subassembly includes bent axle (8) and piston (11).

2. A frac acid well cementation pump as claimed in claim 1 wherein: the inner side of the pump body (1) is provided with 3 inner cavities, the inlet pipe (3) is communicated with the inner cavities through a one-way valve, and the inner cavities are communicated with the outlet pipe (2) through the one-way valve.

3. A frac acid well cementation pump as claimed in claim 2 wherein: motor (4) pass through the bolt and install the top at the support, the one end of main shaft (5) is passed through the bolt and is installed on the output shaft of motor (4), the outside side at the one end of main shaft (5) is established to gear (6) cover, the outside side at the other end of main shaft (5) is installed through the bolt in ratchet wheel (7).

4. A frac acid well cementation pump as claimed in claim 3 wherein: one end of the crankshaft (8) is arranged on the outer side of the pump body (1), the other end of the crankshaft (8) penetrates through the three inner cavities and extends to the outer side of the pump body (1), and the crankshaft (8) is mounted on the inner side of the pump body (1) through a bearing.

5. A frac acid well cementation pump as claimed in claim 4 wherein: the one end of bent axle (8) is passed through the bolt and is installed gear two (9), gear three (10) are installed through the bolt to the other end of bent axle (8), gear (6) and gear two (9) mesh mutually, gear ratchet (7) and gear three (10) mesh mutually, gear (6) and the diameter and the number of teeth of gear two (9) all equal, the diameter and the number of teeth of gear ratchet (7) are less than the diameter and the number of teeth of gear three (10).

6. A frac acid well cementation pump as claimed in claim 5 wherein: one side welding of gear (6) has sliding sleeve (13), the pinhole has all been seted up on sliding sleeve (13) and main shaft (5), pinhole inboard card has bayonet lock (14).

7. A frac acid well cementation pump as claimed in claim 6 wherein: piston (11) have been blocked to the inboard of inner chamber, the outer warp of piston (11) equals the internal diameter of inner chamber, the inboard of inner chamber is provided with connecting rod (12), the one end of connecting rod (12) is passed through the bearing and is installed on bent axle (8), the other end of connecting rod (12) is installed on piston (11) through the pivot.

8. The frac acidizing well cementation pump of claim 7, wherein: cambered surface (15) have been seted up to one side of inner chamber, install switch (16) through the bolt on the pump body (1), switch (16) are connected with motor (4) through the electric wire.