CN206753561U - Shale oil gas hydraulic fracturing Combined Y pumping system - Google Patents
Shale oil gas hydraulic fracturing Combined Y pumping system Download PDFInfo
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- CN206753561U CN206753561U CN201720538054.2U CN201720538054U CN206753561U CN 206753561 U CN206753561 U CN 206753561U CN 201720538054 U CN201720538054 U CN 201720538054U CN 206753561 U CN206753561 U CN 206753561U
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Abstract
The utility model discloses a kind of shale oil gas hydraulic fracturing Combined Y pumping system, belong to oil field hydraulic fracturing equipment technology field.Including Combined Y pumping system clack box, sucker mechanism in fluid end clack box, output mechanism and plunger mechanism, the center line of sucker mechanism is the first center line, the center line of output mechanism is the second center line, the center line of plunger mechanism is third centerline, first center line, second center line and third centerline are distributed in Y types, discharge valve hole in output mechanism, suction valve hole and plunger hole in sucker mechanism form Y types inner chamber, fluid power end plug moves back and forth in plunger hole, Y types chamber pressure reduces when fluid power end plug is away from three center line joints, fracturing fluid is entered by low pressure inlet through sucking valve hole, when fluid power end plug is close to three center line joints, plunger will be discharged after the fracturing fluid pressurization in Y types inner chamber by discharge valve hole.
Description
Technical field
The utility model belongs to oil field hydraulic fracturing equipment technology field.
Background technology
Shale oil gas hydraulic fracturing construction is the yield-increasing technique technical measures of a system, will pressure by ground fracturing equipment
Hydraulic pressure is split to enter shaft bottom and press off cracking initiation flow-guiding channel between 3000 meters~4000 meters of stratum so as to will be unable to the oil of output
Gas is produced by pit shaft.Pressure break pump truck as offer major impetus is the core component of ground fracturing equipment, and pressure break
Fluid end in pump truck be influence construction whether normal key point, fracturing fluid or load fluid (carry the pressure of proppant
Split liquid) sucked through fluid end low pressure inlet, the fracturing fluid in fluid end cavity or load fluid pressurization are broken in piston reciprocation motion
Go out and by high pressure line and wellhead equipment injection well bottom.Since U.S.'s shale oil and gas development obtains important breakthrough, China's page
Rock oil-gas exploration and development dynamics continues to increase, and development constantly expands, and hydraulic fracturing in stratum depths by forming netted split
Stitching gas channel turns into the shale oil and gas development well stimulation of most pronounced effects.
Current domestic shale oil and gas development hydraulic fracturing equipment uses fluid end based on T-shaped fluid end, sucks valve
The center line in hole is the first center line, and the center line in discharge valve hole is the second center line, and piston bore centerline is the 3rd center
Line, gland centerline hole are the 4th center line, the first center line and the coincidence of the second center line or parallel, third centerline and the 4th
Center line overlaps or parallel, the first center line and the second center line cut with third centerline and the 4th central axis it is coplanar, therefore
Referred to as T-shaped fluid end.T-shaped fluid end in use, especially in shale oil and gas strata hydraulic fracturing process, due to applying
Work discharge capacity is far longer than conventional sandstone, by 6m3/ min is promoted to 18m3/ min, ground construction pressure are promoted to 80 by 40~50MPa
~90MPa, or even the phenomenon that ground construction pressure break is more than 105MPa in some cases be present, the reciprocating motion of plunger is accelerated,
Jig frequency is lifted, damage aggravation of the load fluid to fluid end containing proppant, chemical addition agent, in the effect of high pressure reciprocal load
Under, T-shaped fluid end center line junction often subjects sharp wear, by the fluid end clack box of high strength alloy steel forging in phase
The many places such as through-hole region and gland bore region produce fatigue crack.Shale oil and gas strata hydraulic fracturing construction environment is more severe,
Engineering time lengthens, the experience cyclic stress change of fluid end clack box, by heavy wear and fatigue damage in work progress,
Service life shorten, serious threat to construct be normally carried out and construction safety.
Therefore the reliability for how improving fluid end is studied under shale oil gas hydraulic fracturing construction environment, found in complexity
The problem of method for extending fluid end service life under environment is in the urgent need to address at present.
The content of the invention
The purpose of this utility model is to provide one kind and can adapt to shale oil gas hydraulic fracturing construction complex environment, and has
There are the fluid end of high reliability and long-life.The purpose of this utility model is achieved through the following technical solutions.
Shale oil gas hydraulic fracturing Combined Y pumping system, including Combined Y pumping system clack box, the suction in fluid end clack box
Mechanism, output mechanism and plunger mechanism, sucker mechanism include the suction valve in suction valve hole and its inside, support suction valve
The low pressure inlet wrapped of suction valve seat, low-pressure sand bag and low-pressure sand, output mechanism includes discharge valve hole and its interior
High extrusion on the discharge valve in portion, the discharge valve seat for supporting discharge valve, discharge plug, discharge pressure cap and discharge pressure cap
Mouthful, plunger mechanism includes the power end plug and fluid power end plug and connection power end plug and fluid power of plunger hole and its inside
The plunger terminal pad of end plug, the center line of sucker mechanism is the first center line, and the center line of output mechanism is the second center line,
The center line of plunger mechanism is third centerline, it is characterised in that the first center line, the second center line and third centerline are in Y
Type is distributed, and discharge valve hole, suction valve hole and plunger hole form Y types inner chamber, power end by bent axle driving power end plug,
Power end plug connects dish driving fluid end plunger by plunger and moved back and forth in plunger hole, and fluid power end plug is away from three
Y types chamber pressure is reduced during heart line joint (central point), and fracturing fluid is entered by low pressure inlet through sucking valve hole, fluid end
When plunger is close to three center line joints, plunger is discharged after the fracturing fluid in Y types inner chamber is pressurizeed by discharge valve hole.This reality
With new shale oil gas hydraulic fracturing Combined Y pumping system, change traditional center line T-type structure design, remove the 4th center line,
Use the shale oil gas hydraulic fracturing Combined Y pumping system of first, second, third center line Y types connection instead, avoid the T-shaped fluid power of tradition
90 ° of angle convection current impacts at central connection point are held, reduce the fatigue wear and Y types inner chamber local location stress concentration of fluid end
Phenomenon, fluid end service life is improved, ensure that construction safety, shale oil gas hydraulic fracturing huge discharge, high pressure can be met
Power construction requirement.
Further, each Combined Y pumping system clack box includes multigroup identical sucker mechanism, output mechanism and plunger mechanism.
Multigroup identical sucker mechanism, output mechanism and plunger mechanism work simultaneously, can increase fracturing fluid discharge capacity, meet shale oil gas
The requirement of hydraulic fracturing high flow rate operation.
Further, sucker mechanism also includes the suction spring centralizer being connected with suction valve.Plunger is to close to center
During the direction motion of point, the fluid pressure rise in Y types inner chamber, apply deboost to suction valve bottom surface, in suction spring
With the help of centralizer, suction valve is fastenedly connected according to backtracking and again with suction valve seat, and suction valve, suction are all
Space between your seat is closed, and liquid will not leak-off.
Further, output mechanism also includes the discharge spring centralizer being connected with discharge valve.Discharge valve seat and row
The lacuna gone out between plug is referred to as high pressure lumen, in shale oil gas hydraulic fracturing work progress, the liquid pressure in high pressure lumen
Power is up to 80~90MPa even more highs, when plunger close to central point direction to when moving, the liquid pressure rise of Y types inner chamber, and liquid
Pressure acts on discharge valve lower surface, and discharge valve separates with discharge valve seat, and highly pressurised liquid is all with discharging through discharging valve
Space between your seat enters high pressure lumen, and the highly pressurised liquid in high pressure lumen enters high pressure pipe joint and well head through discharge flange,
And then squeeze into shaft bottom and carry out making seam.When plunger away from central point direction to when moving, the liquid pressure drop of Y types inner chamber is low, in high pressure
Fluid pressure in chamber acts on discharge valve upper surface, and valve is discharged with the help of spring centralizer is discharged and is returned according to former road
Hui Bingyu discharge valve seats are fastenedly connected, and the highly pressurised liquid in high pressure lumen will not enter Y types inner chamber.
Further, fluid power end plug uses steel ring, floppy disk root, hard disk successively with Combined Y pumping system clack box body junction
Root, copper sheathing insertion connection sealing.Pass through the design, it is ensured that plunger and high-intensity sealing of the Y types inner chamber in work progress,
Plunger, plunger terminal pad and steel ring, floppy disk root, hard disk root, copper sheathing are symmetrical with third centerline.
Further, power end is fastenedly connected with Combined Y pumping system clack box in addition to plunger is connected using bolt of long stem.
Further, it is symmetrical with the first center line that valve, suction valve seat and suction spring centralizer are sucked, suction
Valve is overall long rod structure, and suction valve is flexible coupling with suction valve seat using elastomeric material.With conventional T-shaped fluid end structure
Difference, the support claw structure that suction valve removes easy damaged are changed to overall stock, can improve the service life of fluid end.
Further, valve seat, discharge valve, discharge spring centralizer, discharge plug, discharge pressure cap are discharged with second
Heart line is symmetrical, and discharge valve is overall long rod structure, and discharge valve uses elastic material with discharge valve seat junction
Material is flexible coupling.Different from conventional T-shaped fluid end structure, the support claw structure that discharge valve removes easy damaged is changed to overall stock,
The service life of fluid end can be improved.
Further, the elastomeric material is polyurethane rubber.Polyurethane adhesive leatherware have corrosion-resistant, high temperature resistant, it is high pressure resistant,
Anti abrasive excellent properties.
Further, discharge pressure cap is replaced with into sensor pressure cap, the monitoring and collection of pressure can be carried out.
Further, low-pressure sand bag is connected with bolt with Y fluid end clack boxes, and low pressure inlet uses variable diameter design.Low pressure
Low pressure inlet in sand bag is the entrance passage of fracturing fluid and load fluid, and low pressure inlet can be ensured more using variable diameter design
Organize the normal feed liquor of cavity and without sand setting.
The utility model can mainly obtain following beneficial effect：
(1) the T-shaped design of four center lines is changed, is avoided with three center line Y types connections at central connection point
90 ° of angle convection current impacts, reduce the fatigue wear and Y types inner chamber local location stress concentration phenomenon of fluid end, improve fluid power
Service life is held, construction safety is ensure that, shale oil gas hydraulic fracturing huge discharge, high pressure construction requirement can be met.
(2) with fluid end junction one be connected using plunger terminal pad in power end, second, using steel ring, floppy disk root,
Hard disk root, copper sheathing insertion connection sealing, effectively improve bonding strength and sealing effectiveness, extend steel ring, floppy disk root, hard disk
Root, copper sheathing service life, reduce fluid end maintenance maintenance time and cost.
(3) the support claw design that valve is sucked in T-shaped fluid end and discharges valve is changed, is designed, avoided using stock
The pawl that often occurs in work progress is disconnected, pawl splits corrosion-resistant, resistance to height used by phenomenon, suction valve and discharge valve
Warm, high pressure resistant, wear-resistant polyurethane adhesive micromicro bears the repeated stock of high intensity, extends valve service life, reduces dimension
Maintenance cost is repaiied, ensure that construction safety.
Brief description of the drawings
Fig. 1 is shale oil gas hydraulic fracturing Combined Y pumping system assembly diagram.
Fig. 2 is shale oil gas hydraulic fracturing Combined Y pumping system clack box schematic diagram.
Reference：1-Y type fluid end clack boxes, the center lines of 2- second, the center lines of 3- first, 4- third centerlines, 5- rows
Go out valve seat, 6- discharge valves, 7- discharges spring centralizer, 8- discharge plugs, and 9- discharges pressure cap, 10- suction valves, and 11- inhales
Enter valve seat, 12- suction spring centralizers, 13- low-pressure sand bags, 14- low pressure inlets, 15- high-pressure outlets, 16- plungers, 17-
Plunger terminal pad, 18- discharge valves hole, 19- suction valves hole, 20- plunger holes.
Embodiment
The utility model is described further below in conjunction with accompanying drawing.
As shown in figure 1, shale oil gas hydraulic fracturing Combined Y pumping system of the present utility model its mainly by being formed with lower part：Y
Type fluid end clack box 1, the first center line 2, the second center line 4, third centerline 3, valve seat 5 is discharged, discharge valve 6, discharge
Spring centralizer 7, plug 8 is discharged, discharge pressure cap 9, suck valve 10, suck valve seat 11, suction spring centralizer 12, low pressure
Sand bag 13, low pressure inlet 14, high-pressure outlet 15, plunger 16, plunger terminal pad 17, discharge valve hole 18, suction valve hole 19,
Plunger hole 20 forms.
As shown in Fig. 2 Y types are formed by discharge valve hole 18, suction valve hole 19 and plunger hole 20 in Combined Y pumping system clack box
Inner chamber.
Each Combined Y pumping system clack box 1 includes the equally distributed Combined Y pumping system assembly structure of five identicals.With reference to Fig. 1 institutes
Show, the low pressure inlet 14 in low-pressure sand bag 13 is the entrance passage of fracturing fluid and load fluid, and low-pressure sand bag 13 is with bolt and Y liquid
Power end valve case 1 connects, and low pressure inlet 14 uses variable diameter design, ensures the normal feed liquor of five cavitys and without sand setting.Plunger 16
It is divided into power end plug and fluid power end plug, the power end plug of left end is connected by plunger terminal pad 17 with fluid power end plug,
The Crankshaft motion of power end 21 is converted to the reciprocal jig frequency motion of plunger 16.Discharge valve hole 18, suction valve hole 19, plunger hole 20
Y types inner chamber is formed, the first center line 3, the second center line 2, the three-wire connection point of third centerline 4 are referred to as central point, fluid power newel post
Plug moves back and forth in Y types inner chamber plunger hole 20, and Y types chamber pressure reduces when it is away from central point, and fracturing fluid is by low pressure feed liquor
Mouthfuls 14 enter through sucking valve hole 19, its close to central point move when, plunger is by the fracturing fluid in Y types inner chamber by discharge valve hole
18 pressurization discharges.To ensure plunger and high-intensity sealing of the Y types inner chamber in work progress, fluid power end plug and Y types in Fig. 1
The body junction of fluid end clack box 1 is successively using steel ring, floppy disk root, hard disk root, copper sheathing insertion connection sealing.
Third centerline 4 is the center line of plunger 16, plunger 16, plunger terminal pad 17 in plunger hole 20, and internal
Steel ring, floppy disk root, hard disk root, copper sheathing it is symmetrical with third centerline 4.
Valve 10, suction valve seat 11, suction spring centralizer 12 are sucked in suction valve hole 19 with the first center line 3
It is symmetrical.Different from conventional T-shaped fluid end structure, the support claw structure that suction valve 10 removes easy damaged is changed to overall length
Bar, its with suction valve seat 11 junction using whole circle is corrosion-resistant, high temperature resistant, high pressure resistant, the wear-resistant soft and soggy connection of polyurethane adhesive.
When Y types chamber pressure reduces, fracturing blender truck provides tool by the low pressure inlet 14 of low-pressure manifold and low-pressure sand bag 13 to Y types inner chamber
There is the fracturing fluid of certain pressure, fracturing fluid is acted in the suction pressure-bearing surface of valve 10, and suction valve 10 is to close to the side of central point
To motion, fracturing fluid enters Y types inner chamber by the space between suction valve 10 and suction valve seat 11.Plunger 16 is to close to center
During the direction motion of point, the fluid pressure rise in Y types inner chamber, apply deboost to suction valve 10 bottom surface, in suction bullet
With the help of spring centralizer 12, suction valve 10 is fastenedly connected according to backtracking and again with suction valve seat 11, and suction is all
Space between your 10, suction valve seat 11 is closed, and liquid will not leak-off.
Valve seat 5, discharge valve 6, discharge spring centralizer 7, discharge plug 8, discharge are discharged in discharge valve hole 18
Pressure cap 9 is symmetrical with the second center line 2.Different from conventional T-shaped fluid end structure, discharge valve 6 removes the support of easy damaged
Pawl structure is changed to overall stock, and it is with discharge valve seat 5 junction using whole circle is corrosion-resistant, high temperature resistant, high pressure resistant, wear-resistant poly-
Urethane rubber is flexible coupling.Discharge valve seat 5 and the lacuna discharged between plug 8 are referred to as high pressure lumen, are forced in shale oil air water
Split in work progress, the fluid pressure in high pressure lumen is up to 80~90MPa even more highs, when plunger 16 is to close to central point side
To during motion, Y types inner chamber liquid pressure rise, fluid pressure acts on discharge valve 6 lower surface, and discharge valve 6 is all with discharging
Your seat 5 separates, and space of the highly pressurised liquid through discharging valve 6 and discharging between valve seat 5 enters high pressure lumen, in high pressure lumen
Highly pressurised liquid enters high pressure pipe joint and well head through discharging flange, and then squeezes into shaft bottom and carry out making seam.When plunger 16 is to away from center
During the motion of point direction, the liquid pressure drop of Y types inner chamber is low, and the fluid pressure in high pressure lumen acts on discharge valve 6 upper surface,
Discharge valve 6 with the help of discharge spring centralizer 7 to be fastenedly connected according to backtracking and with discharge valve seat 5, high pressure lumen
In highly pressurised liquid will not enter Y types inner chamber.
Plug 8 and the discharge synergy of pressure cap 9 are discharged, fit sealing is carried out to the liquid in high pressure lumen, needed in construction
Will when can also by discharge pressure cap 9 replace with sensor pressure cap carry out pressure monitoring and collection.
The utility model adds up 119 sections of hydraulic fracturing test construction, not damaged service life in shale gas development process
More than 300 hours, steel ring, floppy disk root, hard disk root, copper sheathing, suction valve, suction valve seat, discharge valve, discharge valve seat
Service life is superior to the T-shaped fluid end of same period contrast.Work progress mesolow leakage that high pressure is stingless, is more suitable for state without sand plug
Interior shale oil gas hydraulic fracturing condition of construction.
Claims (10)
1. shale oil gas hydraulic fracturing Combined Y pumping system, including Combined Y pumping system clack box, the inhalation machine in fluid end clack box
Structure, output mechanism and plunger mechanism, sucker mechanism include the suction valve in suction valve hole and its inside, support suction valve
The low pressure inlet that suction valve seat, low-pressure sand bag and low-pressure sand are wrapped, output mechanism include discharge valve hole and its inside
Discharge valve, the discharge valve seat of support discharge valve, discharge plug, discharge pressure cap and discharge high extrusion on pressure cap
Mouthful, plunger mechanism includes the power end plug and fluid power end plug and connection power end plug and fluid power of plunger hole and its inside
The plunger terminal pad of end plug, the center line of sucker mechanism is the first center line, and the center line of output mechanism is the second center line,
The center line of plunger mechanism is third centerline, it is characterised in that the first center line, the second center line and third centerline are in Y
Type is distributed, and discharge valve hole, suction valve hole and plunger hole form Y types inner chamber, power end by bent axle driving power end plug,
Power end plug connects dish driving fluid end plunger by plunger and moved back and forth in plunger hole, and fluid power end plug is away from three
Y types chamber pressure is reduced during heart line joint, and fracturing fluid is entered by low pressure inlet through sucking valve hole, and fluid power end plug is close
During three center line joints, plunger is discharged after the fracturing fluid in Y types inner chamber is pressurizeed by discharge valve hole.
2. shale oil gas hydraulic fracturing Combined Y pumping system according to claim 1, it is characterised in that each Combined Y pumping system valve
Case includes multigroup identical sucker mechanism, output mechanism and plunger mechanism.
3. shale oil gas hydraulic fracturing Combined Y pumping system according to claim 1, it is characterised in that sucker mechanism also includes
The suction spring centralizer being connected with suction valve.
4. shale oil gas hydraulic fracturing Combined Y pumping system according to claim 1, it is characterised in that output mechanism also includes
The discharge spring centralizer being connected with discharge valve.
5. shale oil gas hydraulic fracturing Combined Y pumping system according to claim 1, it is characterised in that fluid power end plug and Y types
Fluid end clack box body junction is successively using steel ring, floppy disk root, hard disk root, copper sheathing insertion connection sealing, plunger, plunger connection
Disk and steel ring, floppy disk root, hard disk root, copper sheathing are symmetrical with third centerline.
6. shale oil gas hydraulic fracturing Combined Y pumping system according to claim 1, it is characterised in that power end and Y type fluid power
End valve case is fastenedly connected in addition to plunger connects using bolt of long stem.
7. shale oil gas hydraulic fracturing Combined Y pumping system according to claim 3, it is characterised in that suction valve, suction are all
That seat and suction spring centralizer are symmetrical with the first center line, and suction valve is overall long rod structure, suction valve and suction
Enter valve seat using elastomeric material to be flexible coupling.
8. shale oil gas hydraulic fracturing Combined Y pumping system according to claim 4, it is characterised in that discharge valve seat, discharge
Valve, discharge spring centralizer, discharge plug, discharge pressure cap are symmetrical with the second center line, and discharge valve is overall stock
Structure, discharge valve uses with discharge valve seat junction to be flexible coupling using elastomeric material.
9. the shale oil gas hydraulic fracturing Combined Y pumping system according to claim 7 or 8, it is characterised in that the elastomeric material
For polyurethane rubber.
10. shale oil gas hydraulic fracturing Combined Y pumping system according to claim 1, it is characterised in that replace discharge pressure cap
For sensor pressure cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720538054.2U CN206753561U (en) | 2017-05-16 | 2017-05-16 | Shale oil gas hydraulic fracturing Combined Y pumping system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720538054.2U CN206753561U (en) | 2017-05-16 | 2017-05-16 | Shale oil gas hydraulic fracturing Combined Y pumping system |
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| Publication Number | Publication Date |
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| CN206753561U true CN206753561U (en) | 2017-12-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106968659A (en) * | 2017-05-16 | 2017-07-21 | 华美孚泰油气增产技术服务有限责任公司 | Shale oil gas hydraulic fracturing Combined Y pumping system |
-
2017
- 2017-05-16 CN CN201720538054.2U patent/CN206753561U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106968659A (en) * | 2017-05-16 | 2017-07-21 | 华美孚泰油气增产技术服务有限责任公司 | Shale oil gas hydraulic fracturing Combined Y pumping system |
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