CN105156294A - Free piston fracturing pump and fracturing equipment vehicle - Google Patents
Free piston fracturing pump and fracturing equipment vehicle Download PDFInfo
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- CN105156294A CN105156294A CN201510515463.6A CN201510515463A CN105156294A CN 105156294 A CN105156294 A CN 105156294A CN 201510515463 A CN201510515463 A CN 201510515463A CN 105156294 A CN105156294 A CN 105156294A
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Abstract
A free piston fracturing pump comprises a hydraulic station, a plurality of free piston type hydraulic pumps and a drive liquid pipeline. The hydraulic station is used for providing high-pressure drive liquid. Each free piston type hydraulic pump comprises a cylinder and a free piston capable of moving in the cylinder. Each cylinder comprises a drive liquid inlet, a drive liquid outlet, a fracturing liquid inlet and a fracturing liquid outlet. The drive liquid pipeline is in fluid connection among the hydraulic station, the drive liquid inlets and the drive liquid outlets so as to drive the free piston type hydraulic pumps through the high-pressure drive liquid, and therefore fracturing liquid in the free piston type hydraulic pumps is pumped out of the fracturing liquid outlets. A plurality of control valves for controlling drive liquid to go in and out of the free piston type hydraulic pumps are arranged on the drive liquid pipeline.
Description
Technical field
The present invention relates to a kind of fracturing pump, particularly a kind of free piston type fracturing pump and there is the fracturing unit car of free-piston fracturing pump.
Background technique
Pressure break is the important technical that oil gas field increasing the storage is produced, and needs first to be pressed off in bottom crack by high-pressure liquid, then fills out fracturing sand in crack, strengthens bottom permeability, improves oil and gas production.In pressing crack construction, fracturing unit performance quality determines the realization that fracturing technique improves.Traditional fracturing pump drives crank mechanism by diesel engine, and crank mechanism drives the plunger pump of some overlappings.What require frac pressure along with fracturing work improves constantly, and existing fracturing pump is limited by the pressure-bearing restriction of the connecting rod of crank mechanism, pressure break machine unit pressure is difficult to improve, therefore, dispose the operation together of a lot of platform fracturing unit trucks often, improve the cost of overall operation like this.And the situation that crank ruptures often appears in existing fracturing pump, reduce working efficiency, affect normally carrying out of pressing crack construction.Therefore, how improving for existing above-mentioned deficiency and defect, is those skilled in the art's technical problems urgently to be resolved hurrily.
Summary of the invention
In view of this, propose a kind of free-piston fracturing pump herein, effectively to improve frac pressure, promote working efficiency.
A kind of fracturing unit car applying above-mentioned free-piston fracturing pump is also proposed herein.
A kind of free-piston fracturing pump is provided herein, comprises hydraulic station, multiple free piston type oil hydraulic pump and drive liquid pipeline.Described hydraulic station is in order to provide high-pressure-driven liquid.Each free piston type oil hydraulic pump comprise a cylinder body and can be movable in described cylinder body free-piston, described cylinder body comprises a driving liquid import, drives liquid outlet, fracturing fluid import, fracturing fluid export.Described driving liquid pipeline fluid is connected to described hydraulic station and the import of described driving liquid, drives to utilize described high-pressure-driven liquid to drive described free piston type oil hydraulic pump thus to be pumped from described fracturing fluid outlet by the fracturing fluid in described free piston type oil hydraulic pump between liquid outlet, and described driving liquid pipeline is provided with and controls to drive liquid to pass in and out some control valves of described free piston type oil hydraulic pump.
In one embodiment, described driving liquid pipeline comprises driving liquid feed liquor house steward, some driving liquid feed liquor arms, drives liquid fluid house steward, some driving liquid fluid arms.Described driving liquid feed liquor house steward is in order to receive the high-pressure-driven liquid of described hydraulic station.Each drives liquid feed liquor arm to be connected between the driving liquid import of a free piston type oil hydraulic pump of described driving liquid feed liquor house steward and correspondence.Each drives liquid fluid arm to be connected between the driving liquid outlet of a free piston type oil hydraulic pump of described driving liquid fluid house steward and correspondence.Described some control valves comprise the control valve be located on each driving liquid feed liquor arm and each driving liquid fluid arm.
In one embodiment, the inlet communication of described driving liquid fluid house steward and described hydraulic station.
In one embodiment, wherein the fracturing fluid outlet of a free piston type hydraulic pressure makes described some free piston type hydraulic pressure form overlapping with the fracturing fluid inlet communication of an adjacent free piston type hydraulic pressure.
In one embodiment, the fracturing fluid import of each free piston type hydraulic pressure connects a fracturing fluid liquid inlet pipe, the fracturing fluid outlet connection one fracturing fluid drain pipe of each free piston type hydraulic pressure, the fracturing fluid in corresponding free piston type hydraulic pressure is directly injected oil well by all fracturing fluid drain pipes.
A kind of free-piston fracturing pump of another proposition herein, comprises some free piston type oil hydraulic pumps and drives liquid pipeline.Each free piston type oil hydraulic pump comprise a cylinder body and can be movable in described cylinder body free-piston, described cylinder body comprises a driving liquid import, the outlet of driving liquid, fracturing fluid import, fracturing fluid outlet, the import of described driving liquid and the outlet of driving liquid are arranged at described cylinder body one end, and described fracturing fluid import and fracturing fluid outlet are arranged at described cylinder body the other end.Described driving liquid pipeline and the import of described driving liquid, drive liquid outlet fluid to connect to utilize high-pressure-driven liquid to drive described free-piston thus the fracturing fluid in described free piston type oil hydraulic pump is pumped from described fracturing fluid outlet, described driving liquid pipeline comprises some driving liquid feed liquor arms and some driving liquid fluid arms, each drives liquid feed liquor arm to connect with the driving liquid import of a corresponding free piston type oil hydraulic pump, each driving liquid fluid arm exports with the driving liquid of a corresponding free piston type oil hydraulic pump and connects, each drives on liquid feed liquor arm and each driving liquid fluid arm and arranges the control valve driving liquid turnover in order to control.
A kind of fracturing unit car of another proposition, comprises the first car and the second car herein.Described first car carries a hydraulic station, and described hydraulic station is in order to provide high-pressure-driven liquid, and described hydraulic station is provided with and drives liquid delivery outlet and drive liquid inlet opening.Described second car is independent of described first car, the driving liquid pipeline described second car carrying some free piston type oil hydraulic pumps and be connected with described some free piston type hydraulic pump fluid, each free piston type oil hydraulic pump comprise a cylinder body and can be movable in described cylinder body free-piston, described cylinder body comprises a driving liquid import, drives liquid outlet, fracturing fluid import, fracturing fluid export.Described driving liquid pipeline comprises, drive liquid feed liquor house steward, some driving liquid feed liquor arms, drive liquid fluid house steward, some driving liquid fluid arms.Each drives liquid feed liquor arm to be connected between the driving liquid import of a free piston type oil hydraulic pump of described driving liquid feed liquor house steward and correspondence.Each drives liquid fluid arm to be connected between the driving liquid outlet of a free piston type oil hydraulic pump of described driving liquid fluid house steward and correspondence.Each driving liquid feed liquor arm described and each driving liquid fluid arm are provided with the control valve for controlling to drive liquid turnover.Wherein, when operation at the scene, described driving liquid feed liquor house steward utilizes one first to drive liquid connecting tube to be communicated with the driving liquid delivery outlet of described hydraulic station, and described driving liquid fluid house steward utilizes one second to drive liquid connecting tube to be communicated with the driving liquid inlet opening of described hydraulic station.
The present invention proposes a kind of free-piston fracturing pump and fracturing unit car.Adopt hydraulic station to drive free piston type oil hydraulic pump, save the connecting rod of build-up of pressure bottleneck, improve fracturing unit reliability, and of the fracturing fluid pressure can be improved.Hydraulic station is connected by pipeline with each free piston type hydraulic pumps, and pipeline is equipped with control valve, is switched by the high frequency of control valve, and the high pressure liquid drives free-piston that hydraulic station drives moves and then fracturing fluid is injected oil well.In addition, the present invention also proposes a kind of concept being connected and composed complete fracturing unit by two fracturing unit cars at the scene by simple pipeline, improves the mobility of fracturing unit truck, power and be easy to safeguard.
Accompanying drawing explanation
Fig. 1 is the rough schematic view of an embodiment of free-piston fracturing pump of the present invention.
Fig. 2 is the rough schematic view of the fracturing unit car of the free-piston fracturing pump of application drawing 1.
Embodiment
Before describing the embodiments in more detail, it should be understood that and the invention is not restricted to detailed construction in the application hereafter or described in accompanying drawing or arrangement of elements.The present invention can be the embodiment that alternate manner realizes.And, should be appreciated that wording used herein and term are only used as to describe purposes, should being construed as limiting property not explain.Similar wording meant and comprised item listed thereafter, its equivalent and other additional things " comprising " used herein, " comprising ", " having " etc.Particularly, when describing " certain element ", the quantity that the present invention does not limit this element is one, also can comprise multiple.
Fig. 1 is the rough schematic view of a free-piston fracturing pump embodiment.Free-piston fracturing pump comprises a hydraulic station 12, multiple free piston type oil hydraulic pump 18 and drives liquid pipeline.Hydraulic station provides high-pressure-driven liquid by driving liquid pipeline to free piston type oil hydraulic pump 18.
In the present embodiment, the oil hydraulic pump in hydraulic station 12 adopts small flow high speed and high pressure pump.Hydraulic station 12 has driving liquid delivery outlet 14 and drives liquid inlet opening 16.
Each free piston type oil hydraulic pump 18 comprise a cylinder body 20 and can be movable in cylinder body 20 free-piston 22.Cylinder body 20 is separated to form the first space 32 and second space 34, first space 32 at contrary two ends in order to fill the driving liquid from hydraulic station 12 by free-piston 22, and second space 34 is in order to accommodating fracturing fluid.Described cylinder body 20 comprises a driving liquid import 24, drives liquid outlet 26, fracturing fluid import 28 and fracturing fluid to export 30, drive liquid import 24 and drive liquid outlet 26 to be arranged at cylinder body one end in formation first space 32, fracturing fluid import 28 and fracturing fluid outlet 30 are arranged at the cylinder body the other end forming second space 34.
Described driving liquid pipeline fluid is connected to hydraulic station 12 and drives between liquid import 24, driving liquid outlet 26 to utilize high-pressure-driven liquid to drive free piston type oil hydraulic pump 18 thus to be pumped from fracturing fluid outlet 30 by the fracturing fluid in free piston type oil hydraulic pump.Described driving liquid pipeline is provided with the some control valves 44 controlling to drive the described some free piston type oil hydraulic pumps 18 of liquid turnover.
Specifically, described driving liquid pipeline comprises driving liquid feed liquor house steward 36, some driving liquid feed liquor arms 38, drives liquid fluid house steward 40, some driving liquid fluid arms 42.Wherein, drive liquid feed liquor house steward 36 in order to receive the high-pressure-driven liquid of hydraulic station 12, liquid fluid house steward 40 is driven to be transmitted back to hydraulic station 12 to recycle by from free piston type oil hydraulic pump 18 driving liquid out, each drives liquid feed liquor arm 38 to be connected between the driving liquid import 24 of the free piston type oil hydraulic pump 18 driving liquid feed liquor house steward 36 and correspondence, each drives liquid fluid arm 42 to be connected between the driving liquid outlet 26 of the free piston type oil hydraulic pump 18 driving liquid fluid house steward 40 and correspondence, each drives liquid feed liquor arm 38 and each driving liquid fluid arm 42 to be provided with for controlling the control valve 44 driving liquid to pass in and out.
By sequentially control the high frequency of these control valves 44 according to preset program switching opening and closing action, fracturing fluid can constantly pump by each free piston type oil hydraulic pump.Due to employing is free-piston, eliminates brace and connecting rod framework of the prior art, therefore simplifies the structure and improve structural reliability, and improve the bearing capacity of piston.
In an illustrated embodiment, be communicated with by pipeline serial connection between described some free piston type oil hydraulic pumps 18, thus form overlapping relation in the of the fracturing fluid flow direction.Specifically, wherein the fracturing fluid import 28 of a free piston type oil hydraulic pump 18 connects a fracturing fluid liquid inlet pipe to inject fracturing fluid in second space 34, the fracturing fluid outlet 30 of described free piston type oil hydraulic pump 18 is communicated with the fracturing fluid import 28 of an adjacent free piston type oil hydraulic pump 18 and makes described some free piston type oil hydraulic pumps form overlapping, fracturing fluid is pressurizeed step by step by described some free piston type oil hydraulic pumps 18, injects oil wells carry out operation from afterbody free piston type oil hydraulic pump 18 high pressure fracture liquid out by fracturing fluid outlet 30.
In another unshowned embodiment, described some free piston type oil hydraulic pumps 18 are connected in parallel, specifically, the fracturing fluid import 28 of each free piston type oil hydraulic pump 18 connects a fracturing fluid liquid inlet pipe, the fracturing fluid outlet 30 of each free piston type oil hydraulic pump 18 connects a fracturing fluid drain pipe, and the fracturing fluid in corresponding free piston type oil hydraulic pump 18 is directly injected oil well by all fracturing fluid drain pipes.
Fig. 2 is the rough schematic view of an embodiment of fracturing unit car.Fracturing unit car uses the free-piston fracturing pump in previous embodiment.As shown in Figure 2, described fracturing unit car comprises the first car 50 and the second car 52, and described second car 52 is independent of described first car 50.First car and the second car can independent ambulations, on-the-spot in pressure break, pass through pipeline connection between described first car 50 and the second car 52.
Bearing hydraulic station on first car 50, wherein the structure of hydraulic station can be identical with the hydraulic station 12 in Fig. 1.
The driving liquid pipeline second car 52 carrying some free piston type oil hydraulic pumps and be connected with described some free piston type hydraulic pump fluid, wherein free piston type oil hydraulic pump can be identical with driving liquid pipeline with the free piston type oil hydraulic pump 18 in Fig. 1 with driving liquid pipeline.
When described fracturing unit car at the scene operation time, drive liquid feed liquor house steward to utilize one first to drive liquid connecting tube 46 to be communicated with the driving liquid delivery outlet of hydraulic station, drive liquid fluid house steward to utilize one second to drive liquid connecting tube 48 to be communicated with the driving liquid inlet opening of hydraulic station.Therefore, only need two connecting tubes 46,48 to carry out the connection of the first car and the second car, in-site installation is convenient.Utilize two chassis to be can increase the power of fracturing unit or under equal-wattage, reduce the volume of equipment car to carry the benefit of above-mentioned fracturing unit, increase the mobility of fracturing unit truck.In addition, two chassis carry different units respectively, when the equipment on a chassis breaks down, can change the first intact car of function or the second car at the scene, instead of picture change whole fracturing unit truck in the prior art.
In sum, the present invention proposes a kind of free-piston fracturing pump and fracturing unit car.Adopt hydraulic station to drive free piston type oil hydraulic pump, save the connecting rod of build-up of pressure bottleneck, improve fracturing unit reliability, and of the fracturing fluid pressure can be improved.Hydraulic station is connected by pipeline with each free piston type hydraulic pumps, and pipeline is equipped with control valve, is switched by the high frequency of control valve, and the high pressure liquid drives free-piston that hydraulic station drives moves and then fracturing fluid is injected oil well.In addition, the present invention also proposes a kind of concept being connected and composed complete fracturing unit by two fracturing unit cars at the scene by simple pipeline, improves the mobility of fracturing unit truck, power and be easy to safeguard.
Concept described herein may be embodied to other form when not departing from its spirit and characteristic.Disclosed specific embodiment should be regarded as exemplary instead of restrictive.Therefore, scope of the present invention is by appended claim, instead of determines according to these descriptions before.Any change in the letter and equivalency range of claim all should belong to the scope of these claims.
Claims (7)
1. a free-piston fracturing pump, is characterized in that, comprising:
Hydraulic station, described hydraulic station is in order to provide high-pressure-driven liquid;
Multiple free piston type oil hydraulic pump, each free piston type oil hydraulic pump comprise a cylinder body and can be movable in described cylinder body free-piston, described cylinder body comprises a driving liquid import, drives liquid outlet, fracturing fluid import, fracturing fluid export; And
Drive liquid pipeline, described driving liquid pipeline fluid is connected to described hydraulic station and the import of described driving liquid, drives to utilize described high-pressure-driven liquid to drive described free piston type oil hydraulic pump thus to be pumped from described fracturing fluid outlet by the fracturing fluid in described free piston type oil hydraulic pump between liquid outlet, and described driving liquid pipeline is provided with and controls to drive liquid to pass in and out some control valves of described free piston type oil hydraulic pump.
2. free-piston fracturing pump as claimed in claim 1, it is characterized in that, described driving liquid pipeline comprises:
Drive liquid feed liquor house steward, described driving liquid feed liquor house steward is in order to receive the high-pressure-driven liquid of described hydraulic station;
Some driving liquid feed liquor arms, each drives liquid feed liquor arm to be connected between the driving liquid import of a free piston type oil hydraulic pump of described driving liquid feed liquor house steward and correspondence;
Drive liquid fluid house steward; And
Some driving liquid fluid arms, each drives liquid fluid arm to be connected between the driving liquid outlet of a free piston type oil hydraulic pump of described driving liquid fluid house steward and correspondence;
Wherein, described some control valves comprise the control valve be located on each driving liquid feed liquor arm and each driving liquid fluid arm.
3. free-piston fracturing pump as claimed in claim 2, is characterized in that, the inlet communication of described driving liquid fluid house steward and described hydraulic station.
4. free-piston fracturing pump as claimed in claim 1, is characterized in that, wherein the fracturing fluid outlet of a free piston type hydraulic pressure makes described some free piston type hydraulic pressure form overlapping with the fracturing fluid inlet communication of an adjacent free piston type hydraulic pressure.
5. free-piston fracturing pump as claimed in claim 1, it is characterized in that, wherein the fracturing fluid import of each free piston type hydraulic pressure connects a fracturing fluid liquid inlet pipe, the fracturing fluid outlet connection one fracturing fluid drain pipe of each free piston type hydraulic pressure, the fracturing fluid in corresponding free piston type hydraulic pressure is directly injected oil well by all fracturing fluid drain pipes.
6. a free-piston fracturing pump, is characterized in that, comprising:
Some free piston type oil hydraulic pumps, each free piston type oil hydraulic pump comprise a cylinder body and can be movable in described cylinder body free-piston, described cylinder body comprises a driving liquid import, the outlet of driving liquid, fracturing fluid import, fracturing fluid outlet, the import of described driving liquid and the outlet of driving liquid are arranged at described cylinder body one end, and described fracturing fluid import and fracturing fluid outlet are arranged at described cylinder body the other end; And
Drive liquid pipeline, described driving liquid pipeline and the import of described driving liquid, drive liquid outlet fluid to connect to utilize high-pressure-driven liquid to drive described free-piston thus the fracturing fluid in described free piston type oil hydraulic pump is pumped from described fracturing fluid outlet, described driving liquid pipeline comprises some driving liquid feed liquor arms and some driving liquid fluid arms, each drives liquid feed liquor arm to connect with the driving liquid import of a corresponding free piston type oil hydraulic pump, each driving liquid fluid arm exports with the driving liquid of a corresponding free piston type oil hydraulic pump and connects, each drives on liquid feed liquor arm and each driving liquid fluid arm and arranges the control valve driving liquid turnover in order to control.
7. a fracturing unit car, is characterized in that, comprising:
First car, described first car carries a hydraulic station, and described hydraulic station is in order to provide high-pressure-driven liquid, and described hydraulic station is provided with and drives liquid delivery outlet and drive liquid inlet opening; And
Second car, described second car is independent of described first car, the driving liquid pipeline described second car carrying some free piston type oil hydraulic pumps and be connected with described some free piston type hydraulic pump fluid, each free piston type oil hydraulic pump comprise a cylinder body and can be movable in described cylinder body free-piston, described cylinder body comprises a driving liquid import, drives liquid outlet, fracturing fluid import, fracturing fluid export; Described driving liquid pipeline comprises:
Drive liquid feed liquor house steward;
Some driving liquid feed liquor arms, each drives liquid feed liquor arm to be connected between the driving liquid import of a free piston type oil hydraulic pump of described driving liquid feed liquor house steward and correspondence;
Drive liquid fluid house steward; And
Some driving liquid fluid arms, each drives liquid fluid arm to be connected between the driving liquid outlet of a free piston type oil hydraulic pump of described driving liquid fluid house steward and correspondence;
Wherein, each driving liquid feed liquor arm described and each driving liquid fluid arm are provided with the control valve for controlling to drive liquid turnover;
Wherein, when operation at the scene, described driving liquid feed liquor house steward utilizes one first to drive liquid connecting tube to be communicated with the driving liquid delivery outlet of described hydraulic station, and described driving liquid fluid house steward utilizes one second to drive liquid connecting tube to be communicated with the driving liquid inlet opening of described hydraulic station.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510515463.6A CN105156294A (en) | 2015-08-21 | 2015-08-21 | Free piston fracturing pump and fracturing equipment vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510515463.6A CN105156294A (en) | 2015-08-21 | 2015-08-21 | Free piston fracturing pump and fracturing equipment vehicle |
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| CN105156294A true CN105156294A (en) | 2015-12-16 |
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| CN201510515463.6A Pending CN105156294A (en) | 2015-08-21 | 2015-08-21 | Free piston fracturing pump and fracturing equipment vehicle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017031617A1 (en) * | 2015-08-21 | 2017-03-02 | 深圳智慧能源技术有限公司 | Free piston fracturing pump and fracturing equipment vehicle |
| CN110778476A (en) * | 2019-12-05 | 2020-02-11 | 梁荷 | Liquid step-by-step pressurizing device |
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| CN1051894A (en) * | 1989-11-24 | 1991-06-05 | 徐乃信 | Free piston mud pump carrying method and device |
| CN1079026A (en) * | 1992-05-21 | 1993-12-01 | 北京市西城区新开通用试验厂 | Digit control hydraulic meter high molecular pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017031617A1 (en) * | 2015-08-21 | 2017-03-02 | 深圳智慧能源技术有限公司 | Free piston fracturing pump and fracturing equipment vehicle |
| CN110778476A (en) * | 2019-12-05 | 2020-02-11 | 梁荷 | Liquid step-by-step pressurizing device |
| CN110778476B (en) * | 2019-12-05 | 2024-05-24 | 梁荷 | Liquid step-by-step pressurizing device |
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Application publication date: 20151216 |