CN104612928B - Hydraulic bidirectional effect pumping installations - Google Patents

Hydraulic bidirectional effect pumping installations Download PDF

Info

Publication number
CN104612928B
CN104612928B CN201510094653.5A CN201510094653A CN104612928B CN 104612928 B CN104612928 B CN 104612928B CN 201510094653 A CN201510094653 A CN 201510094653A CN 104612928 B CN104612928 B CN 104612928B
Authority
CN
China
Prior art keywords
double acting
hydraulic cylinder
hydraulic
control valve
chamber
Prior art date
Application number
CN201510094653.5A
Other languages
Chinese (zh)
Other versions
CN104612928A (en
Inventor
胡文国
朱祥英
李建福
赵峰
赵一峰
Original Assignee
烟台杰瑞石油装备技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 烟台杰瑞石油装备技术有限公司 filed Critical 烟台杰瑞石油装备技术有限公司
Priority to CN201510094653.5A priority Critical patent/CN104612928B/en
Publication of CN104612928A publication Critical patent/CN104612928A/en
Application granted granted Critical
Publication of CN104612928B publication Critical patent/CN104612928B/en

Links

Abstract

A kind of hydraulic bidirectional effect pumping installations, including prime mover, hydraulic oil pump, hydraulic pressure oil tank, control valve, double acting hydraulic cylinder and plunger displacement pump, described prime mover driven hydraulic oil pump.Hydraulic bidirectional effect pumping installations utilizes double acting hydraulic cylinder to drive the plunger displacement pump of both sides, add cylinder number, decrease jig frequency, improve the service life of consumable accessory, effectively increase the coverage of flow, it is effectively improved the suction efficiency of fracturing fluid, reduce integrally-built complexity, reduce the costs such as manufacture maintenance, reduce the requirement of lubricating system, double acting hydraulic cylinder moves back and forth and all does work, and improves work efficiency.

Description

Hydraulic bidirectional effect pumping installations
Technical field
The present invention relates to oil-gas mining field, specifically, be a kind of hydraulic bidirectional process pump being applied to Oil/gas Well field operation Send device.
Background technology
Fracturing technique is one of important means developing oil gas, especially China shale gas exploitation at present, for low-permeability oil Gas reservoir, it is generally required to could realize stable yields and the volume increase of oil-gas mining by fracturing work.Main as pressing crack construction of fracturing pump Operation unit, its principle is to utilize hydraulic action to inject fracturing fluid and form high pressure in Oil/gas Well so that oil-gas Layer is formed bigger Crack.Fracturing work Main Function is the percolation ability in order to increase oil gas, improves the yield of oil gas.
At present, conventional fracturing pump is arranged on fracturing unit truck, and in work progress, the power utilizing prime mover to produce passes sequentially through change Speed case, power transmission shaft, it is delivered to fracturing pump and carries out operation.Fracturing pump is as low pressure fracturing fluid is transformed into highly pressurised liquid input well head Conveyer device, the basic structure of traditional fracturing pump the most both domestic and external is toggle, and one end of multiple plungers can be distinguished Moving back and forth in the fluid end of plunger displacement pump, multiple connecting rods are arranged between multiple plunger and bent axle, receive input at bent axle dynamic During power, it is possible to rotate and drivening rod does crank rod movement, and then drive the plunger being connected with connecting rod to move back and forth, Thus drive plunger displacement pump, it is achieved low pressure fracturing fluid is sucked and the fracturing work of high pressure discharge continuously.
In above-mentioned crank-linkage type fracturing pump, owing to fluid end consumable accessory is shorter for service life, such as: valve body, valve rubber, The service lifes such as valve seat, packing assembly only have tens hours.The output pressure of this type of fracturing pump, flow coverage relatively Narrow, the operation of pressure and displacement requirements to realize different range, owing to cylinder number limits, different post can only be met by changing The fluid end clack box of plug diameter.This type of fracturing pump is owing to when high discharge capacity operation, piston reciprocation motion is very frequent, and fracturing fluid is still Fully do not suck and just discharged by high pressure, have impact on the work efficiency of whole pump.In this type of power end of fracturing pump, highly integrated song The first-class parts of axle, pull bar, connecting rod, input gear, cross, structure is sufficiently complex, and manufacturing cost height, manufacturing cycle length, It is not easy to post-job dismounting and maintenance.The high speed rotating such as bent axle, connecting rod, crosshead and input gear, stand under load is the most relatively Greatly, therefore the requirement to lubricating system is the highest, therefore also needs to favorably situated lubricating system in narrow space, adds and sets Meter difficulty, design cost and the accuracy of manufacture.
Summary of the invention
The present invention is directed to above-mentioned the deficiencies in the prior art, devise a kind of hydraulic bidirectional effect pumping installations.
The hydraulic bidirectional effect pumping installations of the present invention, including prime mover, hydraulic oil pump, hydraulic pressure oil tank, control valve, double acting Hydraulic cylinder and plunger displacement pump, described prime mover driven hydraulic oil pump.
The flowline that described hydraulic pressure oil tank is arranged is connected with hydraulic oil pump.
Described hydraulic oil pump is connected with control valve by pipeline, and the oil return pipe that described hydraulic pressure oil tank is arranged is connected with control valve.
Described double acting hydraulic cylinder two ends are both provided with piston rod, and piston rod all connects plunger displacement pump, described double-action hydraulic Cylinder is connected with control valve by pipeline.
Preferably, described double acting hydraulic cylinder is provided with multiple.
Preferably, the first inner chamber of described double acting hydraulic cylinder and the second inner chamber all pass through pipeline and are connected with control valve.
Preferably, the first inner chamber of described double acting hydraulic cylinder is connected with control valve, the second inner chamber by pipeline and another Second inner chamber of double acting hydraulic cylinder is connected.
Preferably, described multiple double acting hydraulic cylinders are sequentially connected into hydraulic cylinder group, a double cropping in described hydraulic cylinder group All be connected with the corresponding inner chamber of another double acting hydraulic cylinder with the inner chamber of hydraulic cylinder, first be positioned in described hydraulic cylinder group and One inner chamber of last double acting hydraulic cylinder is all connected with control valve.
Preferably, described hydraulic cylinder group is provided with multiple.
Preferably, described control valve includes multiple switching valve, be arranged on switching two of valve one end tap mouths respectively with hydraulic pressure Oil pump is connected with hydraulic pressure oil tank, and the main interface being arranged on the switching valve other end is connected with double acting hydraulic cylinder by pipeline.
Preferably, described plunger displacement pump includes clack box, horizontal and vertical in clack box is respectively arranged with in plunger seal sheath and clack box Chamber, plunger seal sheath is connected in the middle part of clack box inner chamber, is slidably fitted with plunger, plunger and corresponding double acting liquid in plunger seal sheath The piston rod of compressing cylinder is connected, and clack box inner chamber upper and lower is fitted with check valve.
The invention has the beneficial effects as follows: hydraulic bidirectional effect pumping installations utilizes double acting hydraulic cylinder to drive the plunger displacement pump of both sides, increases Add cylinder number, decreased jig frequency, improve the service life of consumable accessory, effectively increase the coverage of flow, effectively carry The high suction efficiency of fracturing fluid, reduces integrally-built complexity, reduces the costs such as manufacture maintenance, reduce lube system The requirement of system, double acting hydraulic cylinder moves back and forth and all does work, improves work efficiency.
The access form of double acting hydraulic cylinder is multiple, can in parallel, half range series winding and contacting completely, can adjust even according to applying working condition Connect form, improve the motility of use.When using access form in parallel, driving force is big, and hydraulic cylinder piston motion break-in is fast, Power foot, the hydraulic pressure that plunger displacement pump can be made to export is bigger.When using the access form contacted completely, the fluid between hydraulic cylinder can phase Interaction, driving force is little, saves power input, improves power utilization efficiency.When using the access form of half range series winding, can There is above two simultaneously and access the performance of form.In whole hydraulic bidirectional effect pumping installations, three kinds of double acting hydraulic cylinder Access form can individually occur, it is possible to occurs two-by-two, also can three kinds exist simultaneously, further increase the motility of combination, carry Cylinder number that high hydraulic bidirectional effect pumping installations can provide and hydraulic pressure scope, improve the motility used further.
Control valve uses switching valve, makes the inner chamber of hydraulic cylinder switch between input and output, operates and controls simple, it is achieved holding Easily.Plunger pump structure is simple, multiple parts assemble, improve maintainability, reduce manufacturing cost.
Accompanying drawing explanation
Accompanying drawing 1 is the overall structure schematic diagram one of hydraulic bidirectional effect pumping installations;
Accompanying drawing 2 is the structural representation of hydraulic bidirectional effect pumping installations pumping mechanism;
Accompanying drawing 3 is the overall structure schematic diagram two of hydraulic bidirectional effect pumping installations;
Accompanying drawing 4 is the overall structure schematic diagram three of hydraulic bidirectional effect pumping installations.
Detailed description of the invention
The hydraulic bidirectional effect pumping installations of the present invention, as shown in Figures 1 to 4, including prime mover 1, hydraulic oil pump 2, hydraulic oil Tank 3, control valve 4, double acting hydraulic cylinder 5 and plunger displacement pump 6.
Prime mover 1 is electromotor, motor equal power device, and prime mover 1 drives hydraulic oil pump 2.Hydraulic pressure oil tank 3 is arranged Flowline is connected with hydraulic oil pump 2, and hydraulic oil pump 2 is connected with control valve 4 by pipeline, the oil return pipe that hydraulic pressure oil tank 3 is arranged It is connected with control valve 4,
Double acting hydraulic cylinder 5 two ends are both provided with piston rod 51, and piston rod 51 all connects plunger displacement pump 6, described double acting liquid Cylinder pressure 5 is connected with control valve 4 by pipeline.
Double acting hydraulic cylinder 5 is provided with multiple, and the access form between double acting hydraulic cylinder 5 and control valve 4 is multiple, can in parallel, Half range is contacted and contacts completely.
When using access form the most in parallel, as it is shown on figure 3, the first inner chamber of double acting hydraulic cylinder 5 and the second inner chamber are the most logical Cross pipeline to be connected with control valve 4.
When using the access form contacted completely, as shown in Figure 4, multiple double acting hydraulic cylinders 5 are sequentially connected into hydraulic cylinder group. The inner chamber of a double acting hydraulic cylinder 5 in hydraulic cylinder group is all connected with the corresponding inner chamber of another double acting hydraulic cylinder 5, is positioned at In described hydraulic cylinder group first is connected with control valve 4 with an inner chamber of last double acting hydraulic cylinder 5.Hydraulic cylinder Group can be provided with multiple.
When using the access form of half range series winding, as it is shown in figure 1, the first inner chamber of double acting hydraulic cylinder 5 is connected with control valve 4, Second inner chamber is connected with the second inner chamber of another double acting hydraulic cylinder 5 by pipeline.
Control valve 4 includes multiple switching valve, be arranged on switching two of valve one end tap mouths respectively with hydraulic oil pump 2 and hydraulic oil Tank 3 is connected, and the main interface being arranged on the switching valve other end is connected with corresponding double acting hydraulic cylinder 5 by pipeline.When needs are by oil When liquid is sent in the inner chamber of double acting hydraulic cylinder 5, switching valve makes main interface and the tap mouth that can send into fluid is connected;Otherwise, When the fluid in the inner chamber of double acting hydraulic cylinder 3 is to be discharged, switching valve makes main interface and the tap mouth that can send fluid is connected.
As in figure 2 it is shown, plunger displacement pump 6 includes clack box 61, horizontal and vertical in clack box 61 it is respectively arranged with plunger seal sheath 62 He Clack box inner chamber 63, plunger seal sheath 62 is connected in the middle part of clack box inner chamber 63, is slidably fitted with plunger 64 in plunger seal sheath 62, Plunger 64 is connected with the piston rod 51 of corresponding double-act-ing hydraulic J-Horner 5, and clack box inner chamber 63 upper and lower is fitted with check valve 65.Clack box inner chamber 63 lower end is input, and upper end is outfan, when plunger 64 is displaced outwardly, makes clack box 1 internal cavity Volume increases, and produces pressure reduction, and fracturing fluid is pushed the check valve 65 of bottom open by input, entered in clack box 1 internal cavity, Then plunger 64 moves inward, and makes clack box 1 chamber portions reduce, and will go into the fracturing fluid in clack box 1 internal cavity and leads to Check valve 65 and the outfan of crossing top are sent.
During the work of hydraulic bidirectional effect pumping installations, prime mover operates, and drives hydraulic oil pump 2, by fluid from hydraulic pressure oil tank 3 Extract out and be sent to control valve 4, control valve 4 controlling in the inner chamber whether fluid enters double acting hydraulic cylinder 5.
When using access form the most in parallel, control valve 4 controls fluid and enters into an inner chamber of each double acting hydraulic cylinder 5 In, promote piston to move, the movement of piston makes the fluid in another inner chamber of each double acting hydraulic cylinder 5 by control valve 4 Enter oil return pipe, return in hydraulic oil pipe 3.The piston of movement makes the piston rod 51 at two ends promote or pull the plunger displacement pump of correspondence Plunger 64 in 6 works.
When using the access form contacted completely, control valve 4 controls in fluid enters into one of first double acting hydraulic cylinder 5 In chamber, promoting piston to move, due to the movement of piston, another cavity volume of first double acting hydraulic cylinder 5 reduces, its In fluid by the inner chamber squeezing second double acting hydraulic cylinder 5, then promote second double acting hydraulic cylinder 5 Piston moves, and makes the fluid of another inner chamber of second double acting hydraulic cylinder enter the 3rd double acting hydraulic cylinder 5 and promotes piston, In the manner described above, promoting the piston of each double acting hydraulic cylinder to move step by step, the fluid of last double acting hydraulic cylinder passes through Control valve 4 is discharged, and returns in hydraulic pressure oil tank 3.The piston of movement makes the piston rod 51 at two ends promote or pull the plunger of correspondence Pump 6 works.
When using the access form of half range series winding, control valve 4 controls fluid and enters into the first of at least one double acting hydraulic cylinder 5 In inner chamber, promote the piston of corresponding double acting hydraulic cylinder 5 to move, make the oil in double acting hydraulic cylinder 5 second inner chamber of correspondence Liquid enters in the second inner chamber of remaining double acting hydraulic cylinder 5, promotes piston to move so that it is remaining double acting hydraulic cylinder 5 Fluid in first inner chamber is then discharged by control valve 4, returns in hydraulic pressure oil tank 3.The piston of movement makes the piston rod 51 at two ends Promote or pull the plunger 64 in the plunger displacement pump 6 of correspondence to work.
Double acting hydraulic cylinder 5 moves back and forth under the effect of fluid, drives the plunger displacement pump 6 of both sides to work, by defeated for fracturing fluid high pressure Go out.In hydraulic bidirectional effect pumping installations, at least there is one in three kinds of access waies of double acting hydraulic cylinder 5.

Claims (5)

1. a hydraulic bidirectional effect pumping installations, including prime mover (1), hydraulic oil pump (2), hydraulic pressure oil tank (3), control valve (4), Double acting hydraulic cylinder (5) and plunger displacement pump (6), described prime mover (1) drives hydraulic oil pump (2), described hydraulic oil Tank (3) is connected with hydraulic oil pump (2) by pipeline, and described hydraulic oil pump (2) passes through pipeline and control valve (4) phase Even, described hydraulic pressure oil tank (3) is connected with control valve (4) by pipeline, described double acting hydraulic cylinder (5) two ends Being both provided with piston rod (51), piston rod (51) all connects plunger displacement pump (6), and described double acting hydraulic cylinder (5) leads to Crossing pipeline to be connected with control valve (4), described double acting hydraulic cylinder (5) is provided with multiple, it is characterised in that described First inner chamber of double acting hydraulic cylinder (5) is connected with control valve (4), and the second inner chamber is by pipeline and another double acting liquid Second inner chamber of cylinder pressure (5) is connected.
2. a hydraulic bidirectional effect pumping installations, including prime mover (1), hydraulic oil pump (2), hydraulic pressure oil tank (3), control valve (4), Double acting hydraulic cylinder (5) and plunger displacement pump (6), described prime mover (1) drives hydraulic oil pump (2), described hydraulic oil Tank (3) is connected with hydraulic oil pump (2) by pipeline, and described hydraulic oil pump (2) passes through pipeline and control valve (4) phase Even, described hydraulic pressure oil tank (3) is connected with control valve (4) by pipeline, described double acting hydraulic cylinder (5) two ends Being both provided with piston rod (51), piston rod (51) all connects plunger displacement pump (6), and described double acting hydraulic cylinder (5) leads to Crossing pipeline to be connected with control valve (4), described double acting hydraulic cylinder (5) is provided with multiple, it is characterised in that described Multiple double acting hydraulic cylinders (5) are sequentially connected into hydraulic cylinder group, a double acting hydraulic cylinder (5) in described hydraulic cylinder group Inner chamber be all connected with the corresponding inner chamber of another double acting hydraulic cylinder (5), first be positioned in described hydraulic cylinder group and One inner chamber of last double acting hydraulic cylinder (5) is all connected with control valve (4).
Hydraulic bidirectional effect pumping installations the most according to claim 2, it is characterised in that described hydraulic cylinder group is provided with multiple.
Hydraulic bidirectional effect pumping installations the most according to claim 1 and 2, it is characterised in that described control valve (4) bag Include multiple switching valve, be arranged on switching two of valve one end tap mouths respectively with hydraulic oil pump (2) and hydraulic pressure oil tank (3) phase Even, the main interface being arranged on the switching valve other end is connected with double acting hydraulic cylinder (5) by pipeline.
Hydraulic bidirectional effect pumping installations the most according to claim 1 and 2, it is characterised in that described plunger displacement pump (6) bag Include clack box (61), horizontal and vertical in clack box (61) be respectively arranged with plunger seal sheath (62) and clack box inner chamber (63), Plunger seal sheath (62) is connected with clack box inner chamber (63) middle part, is slidably fitted with plunger (64) in plunger seal sheath (62), Plunger (64) is connected with the piston rod (51) of corresponding double acting hydraulic cylinder (5), clack box inner chamber (63) upper and lower It is fitted with check valve (65).
CN201510094653.5A 2015-03-03 2015-03-03 Hydraulic bidirectional effect pumping installations CN104612928B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510094653.5A CN104612928B (en) 2015-03-03 2015-03-03 Hydraulic bidirectional effect pumping installations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510094653.5A CN104612928B (en) 2015-03-03 2015-03-03 Hydraulic bidirectional effect pumping installations

Publications (2)

Publication Number Publication Date
CN104612928A CN104612928A (en) 2015-05-13
CN104612928B true CN104612928B (en) 2016-12-07

Family

ID=53147533

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510094653.5A CN104612928B (en) 2015-03-03 2015-03-03 Hydraulic bidirectional effect pumping installations

Country Status (1)

Country Link
CN (1) CN104612928B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10982596B1 (en) 2019-09-13 2021-04-20 Bj Energy Solutions, Llc Direct drive unit removal system and associated methods
US10989180B2 (en) 2020-06-05 2021-04-27 Bj Energy Solutions, Llc Power sources and transmission networks for auxiliary equipment onboard hydraulic fracturing units and associated methods

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106523315A (en) * 2016-11-24 2017-03-22 南通爱慕希机械股份有限公司 Intelligent water injection pump for hydraulic plunger piston
CN106870316B (en) * 2017-04-18 2019-06-11 黄山市汇润机械有限公司 A kind of hydraulic double-acting fracturing pump sledge
CN106979124A (en) * 2017-05-04 2017-07-25 芜湖市海联机械设备有限公司 A kind of free-piston gas machine
CN110303368A (en) * 2019-07-12 2019-10-08 沈庆杰 A kind of superhigh precision hydraulic differential lathe feeding system
US10815764B1 (en) 2019-09-13 2020-10-27 Bj Energy Solutions, Llc Methods and systems for operating a fleet of pumps
US10968837B1 (en) 2020-05-14 2021-04-06 Bj Energy Solutions, Llc Systems and methods utilizing turbine compressor discharge for hydrostatic manifold purge
US10961908B1 (en) 2020-06-05 2021-03-30 Bj Energy Solutions, Llc Systems and methods to enhance intake air flow to a gas turbine engine of a hydraulic fracturing unit
US10954770B1 (en) 2020-06-09 2021-03-23 Bj Energy Solutions, Llc Systems and methods for exchanging fracturing components of a hydraulic fracturing unit

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6135719A (en) * 1997-12-29 2000-10-24 Oilquip, Inc. Method and apparatus for metering injection pump flow
CN201730780U (en) * 2010-06-18 2011-02-02 宝鸡石油机械有限责任公司 Hydraulically driven difunctional multi-cylinder slurry pump
CN203384000U (en) * 2013-07-13 2014-01-08 青岛双圣海新能源科技有限公司 Multi-cylinder and double-acting slurry discharge pump for mine
CN203476626U (en) * 2013-06-27 2014-03-12 刘金辉 Single-cylinder hydraulic grouting pump
CN203532179U (en) * 2013-10-16 2014-04-09 李正红 Hydraulic driving type mud sucking and discharging device
CN204493095U (en) * 2015-03-03 2015-07-22 烟台杰瑞石油装备技术有限公司 Hydraulic bidirectional effect pumping installations

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL156792D0 (en) * 2001-01-19 2004-02-08 Munters Corp High pressure water pump

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6135719A (en) * 1997-12-29 2000-10-24 Oilquip, Inc. Method and apparatus for metering injection pump flow
CN201730780U (en) * 2010-06-18 2011-02-02 宝鸡石油机械有限责任公司 Hydraulically driven difunctional multi-cylinder slurry pump
CN203476626U (en) * 2013-06-27 2014-03-12 刘金辉 Single-cylinder hydraulic grouting pump
CN203384000U (en) * 2013-07-13 2014-01-08 青岛双圣海新能源科技有限公司 Multi-cylinder and double-acting slurry discharge pump for mine
CN203532179U (en) * 2013-10-16 2014-04-09 李正红 Hydraulic driving type mud sucking and discharging device
CN204493095U (en) * 2015-03-03 2015-07-22 烟台杰瑞石油装备技术有限公司 Hydraulic bidirectional effect pumping installations

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10982596B1 (en) 2019-09-13 2021-04-20 Bj Energy Solutions, Llc Direct drive unit removal system and associated methods
US10989180B2 (en) 2020-06-05 2021-04-27 Bj Energy Solutions, Llc Power sources and transmission networks for auxiliary equipment onboard hydraulic fracturing units and associated methods

Also Published As

Publication number Publication date
CN104612928A (en) 2015-05-13

Similar Documents

Publication Publication Date Title
US20090041596A1 (en) Downhole Electric Driven Pump Unit
RU52125U1 (en) Electric hydraulic drive pump unit
CN102900400B (en) Compact hydraulic oil pumping machine adopting composited pneumatic-hydraulic cylinder
CN209654022U (en) A kind of hydraulic pressure drive injection device
CN102094780A (en) Hydraulic slurry pump
CN103671302A (en) Hinge rod hydraulic pressurizing device and hydraulic press machine
CN103742381B (en) Fracturing pump system and fracturing unit truck
CN102678507B (en) Double-acting hydraulic ejecting type vacuumizing and compressing device of double cylinders
CN104727797A (en) Fracturing transmission and high-pressure discharging system
CN203383792U (en) Balanced type one-machine multi-well energy saving hydraulic pumping unit
CN201277157Y (en) Oil cylinder direct driving type slush pump
RU2369775C1 (en) Sucker-rod pump of well
CN2549176Y (en) Signal-feedback pumping unit
CN203130399U (en) Shutoff and driving adjusting device using water injection pump as power
CN201818454U (en) Five-cylinder single-acting slurry pump
CN102536925A (en) Hydraulic automatic reciprocating booster
CN202545203U (en) Downhole hydraulic oil well pump
CN104806220A (en) Fully-hydraulic driven fracturing equipment
CN103557131A (en) Multi-row-type fracturing pump
CN201502857U (en) Novel electric dry grease lubricating pump
CN204961255U (en) Switching -over valve and use this switching -over valve novelly prevent grinding partially hydraulic oil production device
CN2924063Y (en) Five-cylinder horizontal piston slurry pump
CN202900841U (en) Hydraulic pump station
CN201292942Y (en) Disassemble packing kit for fracturing pump head
CN202768405U (en) All-metal screw rod type oil-well pump for deep well

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
C14 Grant of patent or utility model