CN216741448U - Inverter motor directly drives well cementation system - Google Patents
Inverter motor directly drives well cementation system Download PDFInfo
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- CN216741448U CN216741448U CN202220218476.2U CN202220218476U CN216741448U CN 216741448 U CN216741448 U CN 216741448U CN 202220218476 U CN202220218476 U CN 202220218476U CN 216741448 U CN216741448 U CN 216741448U
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- variable frequency
- frequency motor
- centrifugal pump
- pump
- manifold
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- 238000002156 mixing Methods 0.000 claims abstract description 52
- 239000002002 slurry Substances 0.000 claims abstract description 48
- 239000004568 cement Substances 0.000 claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000003756 stirring Methods 0.000 claims abstract description 33
- 238000007599 discharging Methods 0.000 claims abstract description 20
- 230000010412 perfusion Effects 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims description 20
- 238000005507 spraying Methods 0.000 claims description 8
- 238000002347 injection Methods 0.000 abstract description 5
- 239000007924 injection Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 11
- 238000010276 construction Methods 0.000 description 6
- 239000010720 hydraulic oil Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Abstract
The utility model discloses a variable frequency motor direct-drive well cementation system, which comprises 2 three-cylinder plunger pumps, an injection centrifugal pump, a circulation centrifugal pump and a perfusion centrifugal pump which are arranged on a skid seat, wherein 2 stirring shafts are symmetrically arranged and installed in a slurry mixing tank, and the top of the slurry mixing tank is provided with an electric cement ash discharging valve and an electric clean water discharging water valve through a manifold.
Description
Technical Field
The utility model relates to the technical field of oil and gas well drilling and completion process equipment, in particular to a variable frequency motor direct-drive well cementation system.
Background
The existing execution mechanism of the oil-gas well completion and well cementation system mainly comprises 2 three-cylinder plunger pumps, a jet centrifugal pump, a circulating pump, a filling pump, 2 mixing tank stirring shafts, a cement ash discharging valve and a clean water discharging valve. The system is characterized in that 2 engines respectively drive 2 three-cylinder plunger pumps through 2 transmission boxes, a power takeoff driving hydraulic oil pump is respectively additionally arranged on the 2 engines and the 2 transmission boxes, the hydraulic oil pump drives a hydraulic motor and a hydraulic oil cylinder, the hydraulic motor respectively drives an injection centrifugal pump, a circulating pump, a filling pump and 2 mixing tank stirring shafts, the hydraulic oil cylinder respectively drives a cement ash discharging valve and a clear water discharging valve, and the mixing of well cementation cement slurry and the supply of cement slurry with certain pressure and certain discharge capacity to an annular cavity of an oil-gas well are realized. Therefore, in the operation process of the well cementation system, the emission of an engine is large, the fuel consumption cost is high, the transmission chain length is long, the power loss is high, the maintenance cost is high, and the aims of energy conservation and emission reduction cannot be achieved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a variable frequency motor direct-drive well cementation system, which realizes the energy conservation and emission reduction of the operation of the well cementation system in the well completion process, reduces the power loss and improves the operation efficiency of well cementation construction.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows: the utility model provides a inverter motor directly drives well cementation system, is including installing 7 inverter motor, 2 three jar plunger pumps on the well cementation skid-mounted, jet centrifugal pump, circulating pump, filling pump, 2 muddy thick liquid jar (mixing) shafts, cement ash down grey valve and clear water under water valve, its characterized in that: the spraying centrifugal pump is connected with the spraying variable frequency motor, the suction end of the spraying centrifugal pump is connected with a suction low-pressure manifold, the discharge end of the spraying centrifugal pump is connected with a front-end manifold of the clean water under-water valve, and the rear end of the clean water under-water valve is connected with a top manifold of the slurry mixing tank; the front end of the cement ash discharging valve is connected with an ash supply manifold, and the rear end of the cement ash discharging valve is connected with a top manifold of the slurry mixing tank; 2 mixing shafts of the slurry mixing tanks are connected with 2 stirring variable frequency motors, and the slurry mixing tanks finish the mixing of clear water and cement ash; the circulating pump is connected with the circulating variable frequency motor, the suction end of the circulating pump is connected with a manifold at the bottom of the slurry mixing tank, the discharge end of the circulating pump is connected with the liquid inlet of the low-pressure densimeter, and the liquid outlet of the low-pressure densimeter is connected with a manifold at the top of the slurry mixing tank; the filling pump is connected with a filling variable frequency motor, the suction end of the filling pump is connected with a manifold at the bottom of the slurry mixing tank, and the discharge end of the filling pump is connected with the suction ends of the 2 three-cylinder plunger pumps; the 2 three-cylinder plunger pumps are connected with the 2 variable frequency motors, the suction ends of the 2 three-cylinder plunger pumps are connected with a discharge manifold of the filling pump, and the discharge ends of the 2 three-cylinder plunger pumps are connected with a discharge high-pressure manifold.
Preferably, the jet centrifugal pump, the circulating pump and the filling pump are open impeller centrifugal pumps.
Preferably, the clean water and cement ash discharging valve is a built-in stepping motor as a driving source to drive the valve plate to realize proportional switching.
Preferably, the low-pressure densitometer is a non-radioactive low-pressure densitometer.
The working process of the utility model for mixing cement paste is as follows: the jet variable frequency motor drives the jet centrifugal pump to suck clean water, and the clean water is discharged into the slurry mixing tank through a clean water drain valve; and (3) discharging the cement dry ash into the slurry mixing tank through a cement ash discharging valve by using external air pressure, and driving 2 slurry mixing tank stirring shafts in the slurry mixing tank to rotate by 2 stirring variable frequency motors to complete uniform mixing of cement slurry.
The working process of providing certain pressure and displacement for the oil-gas well comprises the following steps: 2 mix the rotatory thoughtlessly thick liquid jar (mixing) shaft that accomplishes the thoughtlessly thick liquid of 2 in the variable frequency motor drive muddy thick liquid jar thoughtlessly thick liquid are rotatory thoughtlessly thick liquid jar thoughtlessly thick liquid jar in the thick liquid jar is inhaled and is discharged in returning to muddy thick liquid jar through the low pressure densimeter, observe the real-time density of thick liquid through the low pressure densimeter and stabilize and reach the construction requirement after, pour into variable frequency motor drive filling pump and carry the thick liquid of thoughtlessly thick liquid jar for the suction end of 2 three-cylinder plunger pumps, carry oil gas well annular space with certain pressure and discharge capacity through high-pressure discharge manifold after the plunger pump pressurization.
The speed regulation working mode of the actuating mechanism of the utility model is as follows: the rotation speed of 2 three-cylinder plunger pumps, a jet centrifugal pump, a circulating pump, a filling pump, 2 mixing tank stirring shafts and the valve positions of a cement ash discharging valve and a clear water discharging valve are adjusted in an electric operating chamber of a well cementing truck through automatic induction of a potentiometer or a sensor according to different displacement and pressure required by a well cementing construction process.
The utility model has the beneficial effects that: the utility model is that 2 three-cylinder plunger pumps, jet centrifugal pump, circulating pump, filling pump, 2 mixing tank stirring shafts are equipped with suitable variable frequency motor respectively, cement ash discharge valve and clear water discharge valve are driven by built-in stepping motor respectively, each variable frequency motor and stepping motor drive each mechanism of the well cementation system separately, finish clear water suction, cement dry ash suction, cement slurry stirring, cement slurry pressure boost, cement slurry transport, realize the mixing of well cementation cement slurry and provide cement slurry with certain pressure and certain discharge capacity for the annular cavity of oil gas well, thus reduce the power loss of well cementation operation, realize the energy saving and emission reduction of the operation process, promote the operating efficiency.
Drawings
FIG. 1 is a schematic structural diagram of a direct-drive well cementation system with a variable frequency motor according to the present invention;
wherein: 1. plunger pump I, 2, plunger pump I inverter motor, 3, injection inverter motor, 4, injection centrifugal pump, 5, dry ash feeding pipeline, 6, stirring II inverter motor, 7, clear water low-pressure suction manifold, 8, electric ash discharging valve, 9, electric water discharging valve, 10, stirring I inverter motor, 11, low-pressure nonradioactive densimeter, 12, circulation centrifugal pump, 13, circulation inverter motor, 14, slurry circulation pipeline, 15, stirring shaft I, 16, slurry mixing tank, 17, clear water pipeline, 18, stirring shaft II, 19, perfusion centrifugal pump, 20, perfusion inverter motor, 21, plunger pump II inverter motor, 22, plunger pump II, 23, cement slurry high-pressure discharge manifold, 24, skid frame.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in figure 1, the variable frequency motor direct-drive well cementation system comprises a plunger pump I1, a plunger pump I variable frequency motor 2, a jet centrifugal pump 4, a jet variable frequency motor 3, a dry ash feeding pipeline 5, a clean water low-pressure suction manifold 7, a circulating centrifugal pump 12, a circulating variable frequency motor 13, a slurry circulating pipeline 14, a slurry mixing tank 16, a clean water pipeline 17, a filling centrifugal pump 19, a filling variable frequency motor 20, a plunger pump II22, a plunger pump II variable frequency motor 21 and a cement slurry high-pressure discharge manifold 23 which are installed on a skid frame 24. A low-pressure nonradioactive densimeter 11 is arranged on the slurry circulating pipeline 14, an electric water discharge valve 9 is arranged on the clear water pipeline 17, and an electric ash discharge valve 8 is arranged on the dry ash loading pipeline 5. The stirring shaft I15 and the stirring shaft II18 are arranged in the slurry mixing tank 16, and the stirring I variable frequency motor 10 and the stirring II variable frequency motor 6 are arranged at the upper part of the slurry mixing tank 15. Stirring I variable frequency motor 10 is connected with (mixing) shaft I15, and stirring II variable frequency motor 6 is connected with (mixing) shaft II 18.
The jet centrifugal pump 4 is connected with the jet variable frequency motor 3, the suction end of the jet centrifugal pump 4 is connected with the clean water low-pressure suction manifold 7, the discharge end of the jet centrifugal pump 4 is connected with the front end manifold of the electric sewer valve 9, and the rear end of the electric sewer valve 9 is connected with the top manifold of the slurry mixing tank 16; the front end of the electric ash discharging valve 8 is connected with the dry ash feeding pipeline 5, and the rear end of the electric ash discharging valve 8 is connected with a top manifold of the slurry mixing tank 16; the circulating centrifugal pump 12 is connected with a circulating variable frequency motor 13, the suction end of the circulating centrifugal pump 12 is connected with a manifold at the bottom of the slurry mixing tank 16, the discharge end of the circulating centrifugal pump 12 is connected with a liquid inlet of the low-pressure nonradioactive densimeter 11, and a liquid outlet of the low-pressure nonradioactive densimeter 11 is connected with a manifold at the top of the slurry mixing tank 16; the perfusion centrifugal pump 19 is connected with a perfusion variable frequency motor 20, the suction end of the perfusion centrifugal pump 19 is connected with a manifold at the bottom of the slurry mixing tank 16, and the discharge end of the perfusion centrifugal pump 19 is connected with the suction ends of the plunger pump I1 and the plunger pump II 22; the plunger pump I1 and the plunger pump II22 are respectively connected with the plunger pump I variable frequency motor 2 and the plunger pump II variable frequency motor 21, and the discharge ends of the plunger pump I1 and the plunger pump II22 are connected with the cement paste high-pressure discharge manifold 23.
The working process of the utility model for mixing cement paste is as follows: the jet variable frequency motor 3 drives the jet centrifugal pump 4 to suck clean water from the clean water low-pressure suction manifold 7 and discharge the clean water into the slurry mixing tank 16, and the flow is regulated in the clean water pipeline 17 through the electric sewer valve 9; the cement dry ash is conveyed into a slurry mixing tank 16 through a dry ash loading pipeline 5 by an external air pressure device, and the ash amount is adjusted in the dry ash loading pipeline 5 through an electric ash discharging valve 8; the stirring I variable frequency motor 10 drives the stirring shaft I15, and the stirring II variable frequency motor 6 drives the stirring shaft II18 to uniformly stir and mix the clean water and the dry ash.
The working process of liquid supply in the well comprises the following steps: the circulating variable frequency motor 13 drives the circulating centrifugal pump 12 to circulate cement paste in the cement paste mixing tank 16 through a mud circulating pipeline 14, the instantaneous density value of the cement paste is detected through the low-pressure nonradioactive densimeter 11, when the density value is stable and meets the construction requirement, the grouting variable frequency motor 20 drives the grouting centrifugal pump 19 to suck and convey the cement paste in the cement paste mixing tank 16 to a low-pressure suction section of a plunger pump I1 and a plunger pump II22, the plunger pump I variable frequency motor 2 drives a plunger pump I1, the plunger pump II variable frequency motor 21 drives a plunger pump II22, the plunger pump I1 and the plunger pump II22 pressurize the cement paste and convey the cement paste to a cement paste high-pressure discharge manifold 23 at the flow rate and the pressure required by the construction, and then the cement paste is conveyed to a well through the cement paste high-pressure discharge manifold 23.
The speed regulation working mode of the actuating mechanism of the utility model is as follows: the rotating speeds of the jet centrifugal pump 4, the circulating centrifugal pump 12, the perfusion centrifugal pump 19, the stirring shaft I15, the stirring shaft II18, the plunger pump I1 and the plunger pump II22 are adjusted according to different displacement required by a well cementation construction process through automatic induction of a potentiometer or a sensor in an electric operating chamber of well cementation equipment.
The utility model is characterized in that the injection centrifugal pump, the circulating centrifugal pump, the perfusion centrifugal pump, the stirring shaft and the plunger pump are respectively provided with suitable variable frequency motors, each variable frequency motor independently drives each mechanism of the well cementation system to suck clear water and regulate flow, cement dry ash flow, cement paste is stirred and cement paste is pressurized and conveyed, and cement paste mixing and liquid supply to the annular cavity of the oil-gas well are realized, so that the power loss of the well cementation operation is reduced, the energy conservation and emission reduction in the operation process are realized, and the operation efficiency is improved.
Claims (9)
1. A variable frequency motor direct-drive well cementation system is characterized by comprising a plunger pump I, a plunger pump I variable frequency motor, a jet centrifugal pump, a jet variable frequency motor, a dry ash feeding pipeline, a clean water low-pressure suction manifold, a circulating centrifugal pump, a circulating variable frequency motor, a slurry circulating pipeline, a slurry mixing tank, a clean water pipeline, a filling centrifugal pump, a filling variable frequency motor, a plunger pump II variable frequency motor and a cement slurry high-pressure discharge manifold, wherein the slurry circulating pipeline is provided with a low-pressure nonradioactive densimeter, the clean water pipeline is provided with an electric sewer valve, and the dry ash feeding pipeline is provided with an electric sewer valve; a stirring shaft I and a stirring shaft II are arranged in the slurry mixing tank, and a stirring I variable frequency motor and a stirring II variable frequency motor are arranged on the upper part of the slurry mixing tank.
2. The variable frequency motor direct drive well cementation system of claim 1, wherein: stirring I variable frequency motor is connected with (mixing) shaft I, and stirring II variable frequency motor is connected with (mixing) shaft II.
3. The variable frequency motor direct drive well cementation system of claim 1, wherein: the spraying centrifugal pump is connected with the spraying variable frequency motor, the suction end of the spraying centrifugal pump is connected with the clean water low-pressure suction manifold, and the discharge end of the spraying centrifugal pump is connected with the front end manifold of the electric sewer valve.
4. The variable frequency motor direct drive well cementation system of claim 3, wherein: the rear end of the electric sewer valve is connected with a top manifold of the slurry mixing tank.
5. The variable frequency motor direct drive well cementation system of claim 1, wherein: the front end of the electric ash discharging valve is connected with the dry ash charging pipeline, and the rear end of the electric ash discharging valve is connected with the top manifold of the slurry mixing tank.
6. The variable frequency motor direct drive well cementation system of claim 1, wherein: the circulating centrifugal pump is connected with the circulating variable frequency motor, the suction end of the circulating centrifugal pump is connected with a manifold at the bottom of the slurry mixing tank, and the discharge end of the circulating centrifugal pump is connected with a liquid inlet of the low-pressure nonradioactive densimeter.
7. The variable frequency motor direct drive well cementation system of claim 6, wherein: and a liquid outlet of the low-pressure nonradioactive densimeter is connected with a top manifold of the slurry mixing tank.
8. The variable frequency motor direct drive well cementation system of claim 1, wherein: the filling centrifugal pump is connected with the filling variable frequency motor, the suction end of the filling centrifugal pump is connected with a manifold at the bottom of the slurry mixing tank, and the discharge end of the filling centrifugal pump is connected with the suction ends of the plunger pump I and the plunger pump II.
9. The variable frequency motor direct drive well cementation system of claim 8, wherein: the plunger pump I and the plunger pump II are respectively connected with the plunger pump I variable frequency motor and the plunger pump II variable frequency motor, the suction ends of the plunger pump I and the plunger pump II are connected with the discharge end of the perfusion centrifugal pump, and the discharge ends of the plunger pump I and the plunger pump II are connected with the cement paste high-pressure discharge manifold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220218476.2U CN216741448U (en) | 2022-01-26 | 2022-01-26 | Inverter motor directly drives well cementation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220218476.2U CN216741448U (en) | 2022-01-26 | 2022-01-26 | Inverter motor directly drives well cementation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216741448U true CN216741448U (en) | 2022-06-14 |
Family
ID=81916934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220218476.2U Expired - Fee Related CN216741448U (en) | 2022-01-26 | 2022-01-26 | Inverter motor directly drives well cementation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216741448U (en) |
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2022
- 2022-01-26 CN CN202220218476.2U patent/CN216741448U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220614 |
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| CF01 | Termination of patent right due to non-payment of annual fee |