CN106351814B - Underground booster, downhole pressure increasing fracturing tool and downhole pressure increasing fracturing process - Google Patents
Underground booster, downhole pressure increasing fracturing tool and downhole pressure increasing fracturing process Download PDFInfo
- Publication number
- CN106351814B CN106351814B CN201610901767.0A CN201610901767A CN106351814B CN 106351814 B CN106351814 B CN 106351814B CN 201610901767 A CN201610901767 A CN 201610901767A CN 106351814 B CN106351814 B CN 106351814B
- Authority
- CN
- China
- Prior art keywords
- piston
- packer
- pressure
- eccentric
- housing
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 35
- 230000008569 process Effects 0.000 title claims description 11
- 239000012530 fluid Substances 0.000 claims abstract description 101
- 230000007246 mechanism Effects 0.000 claims abstract description 55
- 238000010276 construction Methods 0.000 claims abstract description 17
- 239000013589 supplement Substances 0.000 claims abstract description 11
- 238000007906 compression Methods 0.000 claims description 33
- 239000007789 gas Substances 0.000 claims description 33
- 210000002445 nipple Anatomy 0.000 claims description 28
- 230000006835 compression Effects 0.000 claims description 27
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 229910001868 water Inorganic materials 0.000 claims description 12
- 238000003780 insertion Methods 0.000 claims description 7
- 230000037431 insertion Effects 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 239000001294 propane Substances 0.000 claims description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 241000790917 Dioxys <bee> Species 0.000 claims description 2
- 238000012856 packing Methods 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 12
- 238000005265 energy consumption Methods 0.000 abstract description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 17
- 239000004576 sand Substances 0.000 description 15
- 239000010410 layer Substances 0.000 description 12
- 239000007788 liquid Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 9
- 239000011435 rock Substances 0.000 description 7
- 210000003205 muscle Anatomy 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 239000004215 Carbon black (E152) Substances 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 239000000084 colloidal system Substances 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 229930195733 hydrocarbon Natural products 0.000 description 4
- 150000002430 hydrocarbons Chemical class 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000002156 mixing Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000012224 working solution Substances 0.000 description 3
- 208000035126 Facies Diseases 0.000 description 2
- 239000006004 Quartz sand Substances 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 1
- 241000534414 Anotopterus nikparini Species 0.000 description 1
- 241001347978 Major minor Species 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001739 rebound effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000003079 shale oil Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000004936 stimulating effect Effects 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
- F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
A kind of downhole pressure increasing fracturing tool the present invention relates to underground booster, using the underground booster and the method using downhole pressure increasing fracturing tool progress downhole pressure increasing pressure break, the underground booster includes housing, the piston that housing is included in the piston cylinder section being sequentially arranged from top to bottom and plunger case section, piston cylinder section connects and composes a step axle construction wide at the top and narrow at the bottom with the plunger in plunger case section；The interior piston reset sprue mechanism for compressing sprue mechanism provided with the piston to conveying fracturing fluid above piston and leading to piston lower section delivery pressure rip current of housing；The fluid that the conveying fracturing fluid into plunger case section inner chamber is additionally provided with housing supplements runner mechanism.Piston is acted on by fracturing fluid, two-step supercharging effect and the high-efficient pressurizing effect of plunger by piston and plunger, it is pressurized fracturing fluid, this underground booster and downhole pressure increasing fracturing tool are simple in construction, energy consumption can effectively be reduced, the use of related electric equipment is reduced simultaneously, and device security is high.
Description
Technical field
The invention belongs to oil and gas exploitation technical field, and in particular to a kind of underground booster, using the underground increase
The downhole pressure increasing fracturing tool of depressor and the method that downhole pressure increasing pressure break is carried out using the downhole pressure increasing fracturing tool.
Background technology
Horizontal well+staged fracturing technology, can be not only used for the exploitation of unconventionaloil pool, can be used for any conventional oil
The increasing the storage volume increase in gas field.Hydrofracturing method refers to utilize ground high-pressure pump, squeezed by pit shaft to oil reservoir with viscosity higher
Fracturing fluid, forms very high pressure on the oil reservoir of shaft bottom, when this pressure exceedes the fracture pressure of oil-gas Layer rock near shaft bottom
When, oil-gas Layer will be pressed off and produce crack；Fracturing fluid on and on is squeezed to oil reservoir, crack continues to expand to the inside of oil reservoir
；Then the load fluid with proppant (quartz sand) is squeezed into oil reservoir, load fluid enters after crack, on the one hand can make to split
Seam continues to extend forward, on the other hand can support the crack pressed off, it is not closure；Replaced followed by injection
Liquid, the load fluid of pit shaft is all replaced and enters crack, fracture support is got up with quartz sand；Finally, the high viscosity pressure of injection
Split liquid can degrade automatically discharge pit shaft outside, left in oil reservoir one or more length not wait crack, make oil reservoir with
A new fluid passage is set up between pit shaft, oil or natural gas are discharged from rock crevice, and along pit shaft
Flow to the oil-gas mining method of earth's surface.
Fracturing unit and instrument are the important components for completing pressing crack construction, can provide condition of high voltage, pump highly pressurised liquid, soon
Fast uniform stirring mulling liquid.Fracturing work well scale is big, discharge capacity is high, and the requirement height to equipment tool is, it is necessary to the equipment employed
It is many.In fracturing methods, only special special construction vehicle just reaches as many as tens of, and pumping installations, manifold and monitoring device etc. are then
Well site center is placed on, also more than 100 tanks for filling water is transported to well site and is placed on wellsite.According to them in pressure
The difference in functionality in construction is split, its critical equipment mainly has fracturing unit truck, fracturing blender truck, balance car, measuring truck etc..
Fracturing unit truck is the capital equipment of pressure break, and its effect is the fracturing fluid that high pressure is injected into well, and stratum is pressed off, and
Proppant is squeezed into crack.Fracturing unit truck is mainly made up of the big part of delivery, power, transmission, the pump housing, guidance panel etc. five, fracturing pump
It is the working host of fracturing unit truck, the fracturing pump of most fracturing unit truck equipments is horizontal three cylinders single action plunger pump.Site operation
When it is very high to the technical property requirements of fracturing pump, it is necessary to have pressure is high, power is big, corrosion-resistant, it is wear-resistant the features such as, and requirement property
Can stable, reliable operation.Current China has introduced fracturing unit truck from companies such as the U.S. SS, BJ, DAWELL, DAGA.Such as the SS- in Sichuan
1000 types, SS-1200 types, FT-1800X-CH types, the BL-1600 types in Central Plains, the road Weir B516 in North China be respectively provided with it is lightweight,
Pressure is high, high-power feature.The H0-2000 types that wherein Henan Oil Field is introduced, rated pressure 103.4MPa, maximum pump discharge
2.48m3/ min, is applied successfully in Zhoukou City exploratory area.
The effect of fracturing blender truck is required according to detail design, and zirconium pressure is supplied after fracturing fluid and proppant are mixed by a certain percentage
Split car and be pumped into well.All fracturing unit trucks supply fracturing fluid by fracturing blender truck, it requires good fracturing blender truck performance, reliable operation, machinery
Change degree is high.Fracturing blender truck is mainly made up of liquid-supplying system, sand delivering system and the part of transmission system three, the general hair with transporting cars
Motivation does power.Liquid-supplying system includes solution feed pump, mixing device, sand pump etc..The fracturing fluid of receiver is pumped into mixed by solution feed pump
In silo, proppant and fracturing fluid are mixed in mixing sand tank, and sand pump is again sent to mixture pump the water-line of fracturing unit truck.
Flowmeter and autocontrol valve are housed, so as to measurement of discharge and control discharge capacity on solution feed pump and sand pump outlet line.Sand delivering system is filled
There are screw conveyer or pneumatic sand deliverer, by sand from ground or a certain height, be transported in mixing sand tank.It is required to meet during sediment transport
Sand amount, upper sand are uniform, sand amount is adjustable.Transmission system has two kinds of machine driving and hydraulic drive.
In separate stratum fracfturing construction, the upper and lower pressure of fracturing string topmost packer is different, and differs greatly.At this
Under the condition of work of sample, packer intensity is impacted.If packer is destroyed, the highly pressurised liquid in fracturing string will
Altered upwards by casing annulus.The casing pressure on packer top is uprushed, and may cause casing failure or other pernicious things
Therefore.On the other hand, when the upper and lower pressure difference of packer is excessive, the highly pressurised liquid of fractured interval may be made by being altered on interlayer, destroyed
Interlayer.
For protecting packer, balance car injects the liquid of certain pressure from oil casing annular space, balance packer
Partial pressure differential, improves the condition of work of packer.In addition, when occurring the accidents such as sand plug, sand card in construction, balance car can be immediately
Backwash or back-pressure well are carried out, is fixed a breakdown.
As horizontal well turns into the formula of main drilled well ten thousand that shale gas is developed, hydraulic fracturing starts to turn into shale gas horizontal well
Main Yield-increasing measure, achieves the achievement attracted people's attention.Practice have shown that：After hydraulic fracturing, oil gas well yield typically can be big
Amplitude increases.Hydraulic fracturing technology can be used to improve conventional gas and oil well yield, and hydraulic fracturing technology will make global petroleum supplly
Nearly 140,000,000,000 barrels of amount increase；It can be used for stimulating the yield of other old fileds to reply；It can be used for the unconventionaloil pools such as shale gas
Exploitation.The unconventionaloil pool Tian Yinqi reservoir properties such as shale gas reservoir are poor, porosity and permeability is extremely low, it is necessary to using waterpower pressure
Splitting technology could the economic exploitation.Hydrofracturing method is " person who has rendered outstanding service " of North America shale gas exploitation, a large amount of shale gas that it brings
The Gas Prices of whole North America are not only dragged down, while the Ye Ling U.S. realizes that the spirit of energy independence is more sufficient.Hydraulic fracturing
Method all generates profound influence to whole energy industry.
But the weak point of ground hydraulic fracturing technology is also obvious：
(1) high pressure, the fracturing fluid of huge discharge are produced using ground installation, and are transported to shaft bottom and carry out supercharging pressure break,
A series of huge land equipments, high pressure pipe joint and wellhead assembly are needed, and it is also high to the performance requirement of equipment.For example, weight
Frac unit mixed marshalling being covered the hydrofracturing method construction usage for celebrating the national shale gas demonstration area in Fuling, fracturing unit is more more,
Fracturing work scene area is big, more than pressure break 40 sets of major-minor equipment, requires high to construction logistics, fracturing yield increasing expense accounts for about one
The half of mouth well shale gas development cost.
(2) China's shale gas resource is more in below buried depth 2500m, and pressure break is mainly and indiscriminately imitates American technology at present, makes me
State 2500m-3500m individual well costs are more more than the U.S., and less than 3500 meters of shale gas does not possess development ability still.
Most complete basin is developed for example, Tarim Basin is Paleozoic group, the Mesozoic group and cenozoic strata, its Middle Paleozoic is sea
Phase megagea cratonic basin, Mesozoic and Cenozoic time is continental sedimentary basin.Certified hydrocarbon source rock is mainly cold force-Ordovician system marine facies mud page
The lacustrine facies mud shale and coal measure strata of rock and three folded-Jurassic systems, wherein Marine Hydrocarbon Source Rocks not only can oil generation again can anger, be current
Topmost source bed and reservoir.But the hydrocarbon source rock buries many in below 5000m.At present, use prior art 5000m with
Under hydrocarbon source rock exploitation shale oil gas be also to lose more than gain.
(3) huge challenge faced using hydrofracturing method in terms of environment is to need largely to use water.A bite oil gas
Well usually requires 4,000,000 or 5,000,000 gallons of water consumption, at the same can produce about 1,000,000 gallons by polluting, need it is to be processed useless
Water.
(4) interruption matches somebody with somebody liquid operation, and the pressure break time is long, and high pressure line is more, and long-time high pressure is worked continuously pressure break equipment presence
Security risk.For example, in horizontal well+staged fracturing construction, the big valve core of high-pressure work liquid erosion causes valve pocket to enter sand, close
Envelope failure, causes wellhead assembly pressure testing unqualified, security risk is brought to production.
(5) pressure rating of the pressure break equipment of Partial Block has reached 105/140MPa, using raising injected system
Pressure is increasingly difficult to ensure that the injection pressure increased increasingly in this kind of oil field.For example, Fuling shale gas develop wellhead assembly in order to
Pressure break requirement is met, significantly larger than requirement of the shale gas production to the pressure rating of wellhead assembly causes cost to waste.
The content of the invention
A kind of downhole pressure increasing fracturing tool the present embodiments relate to underground booster, using the underground booster and adopt
The method for carrying out downhole pressure increasing pressure break with the downhole pressure increasing fracturing tool, can at least solve the segmental defect of prior art.
The present embodiments relate to a kind of underground booster, including housing, the housing includes being sequentially arranged from top to bottom
Piston cylinder section and plunger case section, the inner chamber of piston cylinder section and plunger case section is turned on, sliding in the piston cylinder section to set
Have in piston, the plunger case section and be slidably equipped with plunger, the piston connects and composes a Step Shaft wide at the top and narrow at the bottom with the plunger
Structure；The piston compression sprue mechanism and piston for conveying fracturing fluid to piston cylinder section inner chamber are provided with the housing multiple
Position sprue mechanism, wherein, the port of export of the piston compression sprue mechanism is located above the piston, the piston reset
The port of export of sprue mechanism is located at below the piston；It is additionally provided with the housing to the plunger case below the plunger
The fluid supplement runner mechanism of conveying fracturing fluid in section inner chamber.
As one of embodiment, upper valve block and lower disc are provided with the housing；The lower disc is fixed on the housing
In inner chamber and positioned at piston cylinder section top, the cylinder top of the piston cylinder section is formed；The upper valve block is closely against in described
On the upper surface of lower disc.
As one of embodiment, the lower disc is provided with the first eccentric through-hole and by-pass prot, first eccentric through-hole
And the equal eccentric setting of by-pass prot and eccentric throw is identical, lower disc upper and lower ends described in the first eccentric through-hole insertion, institute
State by-pass prot arrival end and be opened in the lower disc upper surface, the port of export is opened on the wall of the lower disc side；In the housing
Piston reset sprue is provided with wall, described piston reset sprue one end is connected with the port of export of the by-pass prot, the other end
Connected with the inner chamber of piston cylinder section and below the piston；The second eccentric through-hole is correspondingly provided with the upper valve block,
Upper valve block upper and lower ends described in the second eccentric through-hole insertion, the eccentric throw of second eccentric through-hole is eccentric with described first
The eccentric throw of through hole is identical；The upper valve block is connected with the drive mechanism for driving it to be rotated around itself vertical axis.
As one of embodiment, the underground booster also includes being used in piston cylinder section in piston compression process
The piston that fracturing fluid below the piston is directed to outside the housing compresses auxiliary runner mechanism；The piston compression secondary flow road
The first piston compression secondary flow road and second piston that mechanism is included in the housing wall compress secondary flow road and located at described
The first guiding gutter on the wall of upper valve block side, the first piston compression secondary flow road two ends are opened in the inner walls, its
Middle one end is connected with the inner chamber of piston cylinder section and below the piston, and the other end is in close proximity to the upper valve block side wall and set
Put, second piston compression secondary flow road one end open in the inner walls and being in close proximity to the upper valve block side wall and set,
The other end is opened on the housing exterior walls；When first eccentric through-hole is turned on second eccentric through-hole, described first
Guiding gutter compresses secondary flow road and second piston compression secondary flow road with the first piston and is both turned on；The by-pass prot with it is described
When second eccentric through-hole is turned on, first guiding gutter is closed by the inner walls.
As one of embodiment, the underground booster also includes being used in piston cylinder section during piston reset
The auxiliary runner mechanism of piston reset that fracturing fluid above the piston is directed to outside the housing；The piston reset secondary flow road
Mechanism includes first guiding gutter, the first piston in the housing wall and resets secondary flow road and second piston reset secondary flow
Road, the first piston resets secondary flow road two ends and is opened in the inner walls, wherein one end and piston cylinder section
Inner chamber is connected and above the piston, and the other end is in close proximity to the upper valve block side wall and set, and the second piston resets auxiliary
Runner one end open is in the inner walls and being in close proximity to the upper valve block side wall and setting, and the other end is opened in outside the housing
On wall；When the by-pass prot is turned on second eccentric through-hole, first guiding gutter resets secondary flow with the first piston
Road and second piston reset secondary flow road and are both turned on；When first eccentric through-hole and second eccentric through-hole are turned on, described the
One guiding gutter is closed by the inner walls.
The present embodiments relate to a kind of downhole pressure increasing fracturing tool, including underground booster as described above, the well
The plunger case section port of export of lower booster is connected with the first packer.
The embodiment of the present invention further relates to a kind of using downhole pressure increasing fracturing tool as described above progress downhole pressure increasing pressure break
Method, comprise the following steps：
Step one, conveying gun perforation rifle carries out cable perforation in horizontal well or straight well；
Step 2, plays perforation hole rifle, described in tripping at downhole pressure increasing fracturing tool to perforation；
Step 3, fracturing fluid is conveyed to the underground booster；By the underground booster by a part of pressure break stream
Body is pressurized, and makes the first packer setting；As the underground booster works on, in first packer, pressure, which reaches, sets
Definite value opens the pressure limiting valve in first packer, the stratum at fracturing fluid injection perforation, until this layer of position completes pressure
Split；
Step 4, makes first removing seal for packer, acts the downhole pressure increasing fracturing tool；
Step 5, the layer position of pressure break is insulated using bridging plug；
Step 6, repeat step one is to step 5, until all stratum all complete pressure break.
As one of embodiment, the fracturing fluid is water, nitrogen, carbon dioxide foaming or low-pressure propane gas.
The present embodiments relate to a kind of downhole pressure increasing fracturing tool, including underground booster as described above, in addition to
Second packer, pressure difference sliding-sleeve nipple and the 3rd packer, the plunger case section of the underground booster, second packer,
The pressure difference sliding-sleeve nipple and the 3rd packer are sequentially connected.
The embodiment of the present invention further relates to a kind of using downhole pressure increasing fracturing tool as described above progress downhole pressure increasing pressure break
Method, comprise the following steps：
Step one, conveying gun perforation rifle carries out the perforation on whole stratum in horizontal well or straight well；
At step 2, downhole pressure increasing fracturing tool described in tripping in the perforation of end, and make the pressure difference sliding-sleeve nipple just
To perforation, second packer surrounds the end perforated zone with the 3rd packer；
Step 3, fracturing fluid is conveyed to the underground booster；By the underground booster by a part of pressure break stream
Body is pressurized, and makes second packer setting；As the underground booster works on, pressure reaches in second packer
Open the pressure limiting valve in second packer to setting value, fracturing fluid injects the pressure difference sliding-sleeve nipple and the described 3rd
In packer, and make above-mentioned 3rd packer setting；As the underground booster works on, in the pressure difference sliding-sleeve nipple
Pressure reach setting value, open the pressure difference sliding-sleeve nipple, fracturing fluid enters stratum, until this layer of position completes pressure break；
Step 4, makes second packer and the 3rd removing seal for packer, by the downhole pressure increasing fracturing tool to
Rear dragging is pulled at next perforation, and makes the pressure difference sliding-sleeve nipple just to perforation, second packer and the described 3rd packing
Device surrounds the end perforated zone；Repeat step three, makes this layer of position complete pressure break；
Step 5, repeat step four, until all stratum all complete pressure break.
The embodiment of the present invention at least has the advantages that：Piston is acted on by fracturing fluid, passes through piston and post
Transmission effect between plug, two-step supercharging effect and the high-efficient pressurizing effect of plunger by piston and plunger, makes fracturing fluid
It is pressurized.Above-mentioned purpose is realized using working solution, both make it that this underground booster is simple in construction, and can effectively reduce energy
Consumption, simultaneously because reducing the use of related electric equipment, is effectively guaranteed the safety of equipment.
Based on downhole pressure increasing fracturing tool provided in an embodiment of the present invention and method, following beneficial effect can be achieved：
(1) one or two tread conventional drilling slush pumps need to be only utilized, by oil pipe or coiled tubing by extensive work
Liquid is transported to underground, by downhole pressure increasing fracturing tool, and pressure needed for a part of working solution directly is pressurized into pressure break is required to adopt
Ground installation pressure rating is no more than 30MPa, the problem of in the absence of high pressure is delivered into shaft bottom by ground, without huge
Land equipment, high pressure pipe joint and wellhead assembly, and reduce the performance requirement of equipment, pressure break cost reduction by more than 70%.
(2) reduce water consumption, environmental protection.
Downhole pressure increasing fracturing tool provided in an embodiment of the present invention and method, reduce the safety requirements of pressure break, Ke Yigai
Enter the component of fracturing fluid, including water is replaced with nitrogen or carbon dioxide foaming, thus can reduce water consumption, or inject low
Propane flammable gas is pressed, low-pressure propane gas can be compressed into LPG colloids in downhole pressure increasing, realize pressure break, while LPG colloids and air-fuel mixture
Together, itself also can as fuel, thus in the absence of wastewater treatment the problems such as, effectively reduce production cost.
Using downhole hydraulic Splitting Method, most of fracturing fluid is in downhole pressure increasing, and the destruction to pipeline and stratum is smaller, will not
Leakage, causes environmental pollution.
(3) security is improved
Because the pressure of land equipment and pipeline is not high, the security risk of system is reduced.
(4) it is applicable any well stimulation work
China's hydraulic fracturing technology is no longer limited by buried depth, either Shallow Oil-Gas or middle deep oil gas field, is even surpassed
Deep Oil/gas Well, can use downhole pressure increasing fracturing tool provided in an embodiment of the present invention and method to carry out pressure break；Either straight well,
Or extended reach well or horizontal well, can use downhole pressure increasing fracturing tool provided in an embodiment of the present invention and method to be pressed
Split；The either unconventionaloil pool such as shale gas, or conventional gas and oil, can use downhole pressure increasing pressure provided in an embodiment of the present invention
Split instrument and method carries out pressure break.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation for the underground booster that the embodiment of the present invention one is provided；
Fig. 2 is the sectional view in Fig. 1 along A-A；
Fig. 3 is the sectional view in Fig. 1 along B-B；
Fig. 4 is the sectional view in Fig. 1 along C-C；
Fig. 5 is the sectional view in Fig. 1 along D-D；
Fig. 6 is the sectional view in Fig. 1 along E-E；
Fig. 7 is the structural representation of upper valve block provided in an embodiment of the present invention；Wherein, Fig. 7 a cut open for the cross section of upper valve block
Depending on schematic diagram, Fig. 7 b are a longitudinal section schematic cross-sectional view of upper valve block, and Fig. 7 c show for another longitudinal section section view of upper valve block
It is intended to；
Fig. 8 is the structural representation of lower disc provided in an embodiment of the present invention；Wherein, Fig. 8 a cut open for the cross section of lower disc
Depending on schematic diagram, Fig. 8 b are a longitudinal section schematic cross-sectional view of lower disc, and Fig. 8 c show for another longitudinal section section view of lower disc
It is intended to；
Fig. 9 compresses the schematic diagram of auxiliary runner mechanism for the piston provided in an embodiment of the present invention in piston compression process；
Figure 10 is the schematic diagram of the auxiliary runner mechanism of the piston reset provided in an embodiment of the present invention in piston compression process；
Figure 11 is the schematic diagram of the auxiliary runner mechanism of the piston reset provided in an embodiment of the present invention during piston reset；
Figure 12 compresses the schematic diagram of auxiliary runner mechanism for the piston provided in an embodiment of the present invention during piston reset；
Figure 13 is the structural representation for the downhole pressure increasing fracturing tool that the embodiment of the present invention two is provided；
Figure 14 is the schematic diagram for the downhole pressure increasing fracturing process that the embodiment of the present invention three is provided；
Figure 15 is the structural representation for the downhole pressure increasing fracturing tool that the embodiment of the present invention four is provided；
Figure 16 is the structural representation for the pressure difference sliding-sleeve nipple that the embodiment of the present invention four is provided；
Figure 17 is the operation principle schematic diagram for the pressure difference sliding-sleeve nipple that the embodiment of the present invention four is provided；
Figure 18 is the schematic diagram for the downhole pressure increasing fracturing process that the embodiment of the present invention five is provided.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is all other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Embodiment one
Such as Fig. 1-Fig. 7, the present embodiments relate to a kind of underground booster 3, including housing 301, the housing 301 has interior
Chamber, usually, according to the demand of wellbore construction, the housing 301 is in cylindrical shape.The housing 301 is included from top to bottom successively
The piston cylinder section and plunger case section of arrangement, the inner chamber of above-mentioned piston cylinder section and above-mentioned plunger case section are turned on, in the piston cylinder section
It is slidably equipped with piston 308, the plunger case section and is slidably equipped with plunger 309, the piston 308 connects and composes one with the plunger 309
Step axle construction wide at the top and narrow at the bottom.Above-mentioned piston cylinder section and above-mentioned plunger case section are formed in one formula structure, above-mentioned piston 308 with
Above-mentioned plunger 309 can be connected or be integrally formed by being fixedly connected with mode；The size of above-mentioned piston 308 and above-mentioned piston cylinder section
Interior chamber size matching, above-mentioned piston 308 upper-lower seal can slide in piston cylinder section inner chamber；The size of above-mentioned plunger 309 with
The interior chamber size matching of above-mentioned plunger case section, above-mentioned plunger 309 upper-lower seal can slide in plunger case section inner chamber；Wherein,
Above-mentioned piston 308 is both preferably with above-mentioned plunger 309 and uses cylindrical structure, and the diameter of plunger 309 is less than the straight of piston 308
Footpath, the two is preferably to be coaxially disposed, and is preferably to be overlapped with the axis of housing 301.It should be noted that usually, the well
Lower booster 3 is enters vertically into pit shaft, during for applied in horizontal well, and it is also first to enter back into the horizontal well via straight well
It is interior, thus, in the present embodiment, using the structure describing mode in above-mentioned orientation up and down；Level is applied to for the underground booster 3
Situation in well, using the underground booster 3 close to one end of well head as its rear end, the other end is front end, above-mentioned piston cylinder section with
Above-mentioned plunger case section is that extreme direction is sequentially arranged forward from the rear end of the underground booster 3, and this is to those skilled in the art
Speech is beyond all doubt；Then for the relative position relation up and down being subsequently related to, above-mentioned explanation content is also applied for.
Above-mentioned piston 308 is used to be pressurized fracturing fluid with above-mentioned plunger 309, in the present embodiment, mainly by making
For piston 308, acted on by the transmission between piston 308 and plunger 309, by piston 308 and the two-step supercharging of plunger 309
Effect and the high-efficient pressurizing effect of plunger 309, are pressurized fracturing fluid.Active force application to piston 308 can pass through electricity
The driving equipments such as machine are realized, it is contemplated that in the factor such as complexity, weight and safety of equipment, the present embodiment, preferably using work
It is that above-mentioned fracturing fluid realizes above-mentioned purpose as liquid, both make it that this underground booster 3 is simple in construction, and can effectively reduce energy
Consumption, simultaneously because reducing the use of related electric equipment, is effectively guaranteed the safety of equipment.Specifically, the housing 301
The interior piston for conveying fracturing fluid to piston cylinder section inner chamber that is provided with compresses sprue mechanism and piston reset sprue mechanism,
Wherein, the port of export of the piston compression sprue mechanism is located at the top of piston 308, the piston reset sprue mechanism
The port of export be located at the lower section of the piston 308.By conveying fracturing fluid to the intracavity space above or below piston 308,
Under the driving of the fluid energy of fracturing fluid so that piston 308 is moved down or moved up, i.e., piston 308 compresses or resetted, so as to drive post
Plug 309 is moved down or moved up, and realizes the pressurized treatment to fracturing fluid in the cylinder of plunger 309.
Continued the structure of above-mentioned underground booster 3, as shown in Figure 1, Figure 3 and Figure 4, and the upper He of valve block 305 is provided with the housing 301
Lower disc 306；The lower disc 306 is fixed in the inner chamber of housing 301 and positioned at piston cylinder section top, forms described
The cylinder top of piston cylinder section；The upper valve block 305 is closely against on the upper surface of the lower disc 306.Above-mentioned lower disc 306
Shape and size and the cross sectional shape and size fit of the corresponding position of the inner chamber of housing 301, so that the lower disc 306 is embedded in
It is fixed in the inner chamber of housing 301, and the inner chamber of housing 301 above and below the lower disc 306 is separated；Above-mentioned piston cylinder section
The part of housing 301 of the lower section of lower disc 306 is constituted with above-mentioned plunger case section.Above-mentioned upper valve block 305 be preferably and lower disc
306 have identical shape of cross section and size, i.e., lower surface of valve block 305 and the upper surface of lower disc 306 are in plane on this
Contact.
Further, such as Fig. 1-Fig. 9, the lower disc 306 is provided with the first eccentric through-hole 3061 and by-pass prot 3062, institute
State the first eccentric through-hole 3061 and the by-pass prot 3062 deviates the vertical axis setting of the lower disc 306, described first
The upper and lower ends of lower disc 306 described in the insertion of eccentric through-hole 3061, the arrival end of by-pass prot 3062 is opened in the lower disc 306
Upper surface, the port of export is opened on the side wall of lower disc 306；In in the wall of housing 301 be provided with piston reset sprue
307, described one end of piston reset sprue 307 is connected with the port of export of the by-pass prot 3062, the other end and the piston cylinder
The inner chamber of section is connected and positioned at the lower section of piston 308；The second eccentric through-hole 3051, institute are correspondingly provided with the upper valve block 305
State the upper upper and lower ends of valve block 305 described in the insertion of the second eccentric through-hole 3051 and deviate the vertical axis setting of the upper valve block 305.
The eccentric throw of above-mentioned first eccentric through-hole 3061, by-pass prot 3062 and above-mentioned second eccentric through-hole 3051 is identical.The upper valve block
305 be connected with driving its around itself vertical axis rotate drive mechanism so that second eccentric through-hole 3051 with it is described
First eccentric through-hole 3061 and the by-pass prot 3062 are periodically turned on.Above-mentioned second eccentric through-hole 3051 is eccentric with above-mentioned first
Through hole 3061 is to constitute above-mentioned piston compression sprue mechanism, above-mentioned second eccentric through-hole 3051 and above-mentioned by-pass prot 3062 and
Above-mentioned piston reset sprue 307 constitutes above-mentioned piston reset sprue mechanism.As Fig. 8-Fig. 9, above-mentioned first is eccentric logical
Hole 3061 and by-pass prot 3062 are preferably symmetrical (to open up positional symmetry rather than shape pair along the vertical axis of lower disc 306
Claim), it is ensured that the upward cycle of piston 308 is consistent with downstream cycle, and ensures the up stroke of piston 308 and the downward storke of piston 308
Unanimously, to ensure the stable operation of this underground booster 3.Position of above-mentioned second eccentric through-hole 3051 on upper valve block 305 should
It is correspondingly arranged, during ensureing that upper valve block 305 is rotated on lower disc 306, second eccentric through-hole 3051 can be logical with the first bias
Hole 3061 and by-pass prot 3062 are docked.Rotated by the upper valve block 305 of above-mentioned drive mechanism driving around itself vertical axis, i.e., on this
Valve block 305 is rotated on the upper surface of lower disc 306 so that the second eccentric through-hole 3051 is led with the periodicity of the first eccentric through-hole 3061
It is logical, and the second eccentric through-hole 3051 is periodically turned on by-pass prot 3062, namely cause above-mentioned piston compression sprue machine
Structure is periodically opened and closed, and above-mentioned piston reset sprue mechanism is periodically opened and closed, so that piston
308 periodic downlink or uplinks, so as to realize the periodicity supercharging of pressure fluid.
Further optimize the structure of above-mentioned underground booster 3, such as Fig. 1, Figure 10 and Figure 11, the underground booster 3 also include
For the fracturing fluid described in piston cylinder section below piston 308 to be directed into the shell in the compression process of piston 308
Piston outside body 301 compresses auxiliary runner mechanism；The piston, which compresses auxiliary runner mechanism, includes the in the wall of housing 301
One piston compression secondary flow road 312 and second piston compression secondary flow road 313 and the guiding gutter on the upper side wall of valve block 305
3052, the two ends of first piston compression secondary flow road 312 are opened on the inwall of housing 301, wherein one end and the work
The inner chamber of plug cylinder section is connected and positioned at the lower section of piston 308, and the other end is in close proximity to the side wall of upper valve block 305 and set, described
The one end open of second piston compression secondary flow road 313 is on the inwall of housing 301 and being in close proximity to the side wall of upper valve block 305 and set
Put, the other end is opened on the outer wall of housing 301；First eccentric through-hole 3061 is led with second eccentric through-hole 3051
When logical, the guiding gutter 3052 is led with first piston compression secondary flow road 312 and second piston compression secondary flow road 313
It is logical；When the by-pass prot 3062 is turned on second eccentric through-hole 3051, the guiding gutter 3052 is by the inwall of housing 301
Closing.In the compression process of piston 308 (i.e. piston 308 descending during), compressing auxiliary runner mechanism by above-mentioned piston will be living
The inner chamber of the lower section of piston 308 is connected with the external space of housing 301 (annular space i.e. between housing 301 and pit shaft) in plug cylinder section, by work
The fracturing fluid of the lower section of plug 308 is directed to outside housing 301, is easy to the smooth descending of piston 308.
Further optimize the structure of above-mentioned underground booster 3, such as Fig. 1, Figure 12 and Figure 13, the underground booster 3 also include
For the fracturing fluid of the top of piston 308 described in piston cylinder section to be directed into the shell in the reseting procedure of piston 308
The auxiliary runner mechanism of piston reset outside body 301.The auxiliary runner mechanism of piston reset includes the guiding gutter 3052, located at described
First piston in the wall of housing 301 resets secondary flow road 314 and second piston resets secondary flow road 315, and the first piston resets auxiliary
The two ends of runner 314 are opened on the inwall of housing 301, and wherein one end is connected with the inner chamber of piston cylinder section and positioned at institute
The top of piston 308 is stated, the other end is in close proximity to the side wall of upper valve block 305 and set；The second piston resets the one end of secondary flow road 315
It is opened on the inwall of housing 301 and is in close proximity to the side wall of upper valve block 305 and set, the other end is opened in the housing 301
On outer wall；When the by-pass prot 3062 is turned on second eccentric through-hole 3051, the guiding gutter 3052 is lived with described first
Plug resets secondary flow road 314 and second piston resets secondary flow road 315 and is both turned on；First eccentric through-hole 3061 and described second inclined
When heart through hole 3051 is turned on, the guiding gutter 3052 is closed by the inwall of housing 301.Above-mentioned first piston resets secondary flow road
314 corresponding end can be directly opened on the piston cylinder section inwall of the top of piston 308, can also take following structure：Such as Fig. 9,
Figure 11 and Figure 12, offers a connectivity slot 3063 on lower disc 306, and the connectivity slot 3063, which has, is opened in the bottom of lower disc 306
End so as to piston cylinder section inner chamber the first openend connected and the second openend being opened on the side wall of lower disc 306, it is above-mentioned
The corresponding end that first piston resets secondary flow road 314 is connected with second openend.(lived in the reseting procedure of piston 308
Fill in 308 it is up during), by the auxiliary runner mechanism of above-mentioned piston reset by the inner chamber of the top of piston 308 and shell in piston cylinder section
The external space of body 301 is connected, and the fracturing fluid of the top of piston 308 is directed to outside housing 301, is easy to the smooth up of piston 308.
Wherein, above-mentioned guiding gutter 3052 is along the upper radial direction of valve block 305 from the upper side wall of valve block 305 to the vertical axes of valve block on this 305
Line side depression is formed, in an arc-shaped groove-type structure, and the set location of the guiding gutter 3052 should ensure that will not be eccentric to above-mentioned second
The connectivity structure of through hole 3051 and above-mentioned first eccentric through-hole 3061 and above-mentioned by-pass prot 3062 is interfered, to avoid influence from living
The compression effectiveness of plug 308.Preferably, such as Fig. 1-Figure 13, with the process of above-mentioned second eccentric through-hole 3051 valve block 305 it is vertical
Face (considers the feelings that the second eccentric through-hole 3051 is cylindrical hole or the through hole of other shapes on the basis of the vertically symmetrical face of axis
Its vertically symmetrical face there may be multiple under condition), the vertically symmetrical face of above-mentioned guiding gutter 3052 is vertical with the reference plane；Above-mentioned two
The compression secondary flow of piston 308 road (i.e. first piston compression secondary flow road 312 and second piston compression secondary flow road 313) and above-mentioned two-piston
308 reset secondary flow road (i.e. first piston resets secondary flow road 314 and resets secondary flow road 315 with second piston) just to being distributed in housing
On the inwall of 301 both sides (i.e. on the same vertically symmetrical face of housing 301).For foregoing first eccentric through-hole 3061 with
The symmetrical situation of vertical axis of the by-pass prot 3062 along lower disc 306, with through first eccentric through-hole 3061 with bypass
The vertical plane in hole 3062 is first plane of symmetry of housing 301, to compress secondary flow road and above-mentioned two-piston through above-mentioned two-piston 308
308 vertical planes for resetting secondary flow road are second plane of symmetry of housing 301, and first plane of symmetry is vertical with second plane of symmetry.
Directly to be run to the bottom of piston cylinder section during avoiding piston 308 descending in the case where the fluid of fracturing fluid can be acted on
Portion, and cause above-mentioned piston reset sprue failure mechanisms, being further provided with housing 301 is used to limit the piston 308
The position-limit mechanism of downward storke, the position-limit mechanism is located at the lower section of piston 308.The position-limit mechanism can be used in piston cylinder section
The structure of one step (having illustrated, do not mark) is set, and the step is from piston cylinder section inwall to piston cylinder section below piston 308
The ring-shaped step of vertical axis direction protrusion, the step can prevent piston 308 further descending；Above-mentioned piston reset main flow
The port of export in road 307 is preferably to be opened in below the step；Certainly, also can be by setting above-mentioned Step-edge Junction in plunger case section
Structure, by the downward storke equally achievable control to the downward storke of piston 308 for limiting plunger 309.In the present embodiment, such as scheme
1, above-mentioned position-limit mechanism includes spring (having illustrated, do not mark), the spring housing loaded on the plunger 309, and one end against
In the lower surface of piston 308, the other end is resisted against the plunger case section top.Above-mentioned spring is preferably to use compression spring；
On the one hand above-mentioned spring descending to piston 308 can play spacing and cushioning effect, control piston 308 and the descending speed of plunger 309
Degree is unlikely to too fast, to ensure security and the stable operation of equipment, on the other hand, during piston 308 is up, spring
Rebound effect can accelerate the reset speed of piston 308, improve operating efficiency.Preferably, such as Fig. 1 and Fig. 7, in above-mentioned piston cylinder section
Corresponding position is provided with annular groove (having illustrated, do not mark), to install above-mentioned spring, and the annular groove is to the compression of spring and returns
Play guide effect again, it is ensured that piston 308 compress and reseting procedure stability.It is further preferred that in the present embodiment, it is above-mentioned
Position-limit mechanism uses the structure that spring is combined with limited step；Such as Fig. 1 and Fig. 7, the structure of above-mentioned limited step is embodied in：It is above-mentioned
Annular groove is to set a circular column (having illustrated, do not mark), the vertical axis and housing of the circular column in piston cylinder section bottom
301 vertical axis is overlapped, and the annular diameters of the circular column are identical with the diameter of plunger 309, so that plunger 309 passes through the annular
Post, the outer annular diameter of the circular column is less than the adjacent inner diameter of housing 301, so that housing 301 inwall adjacent with this is surrounded
Above-mentioned annular groove, above-mentioned circular column can play the effect spacing to the downward storke of piston 308, above-mentioned piston reset main flow simultaneously
The port of export in road 307 is located at below the annular top end.
Continue the structure of above-mentioned underground booster 3, is additionally provided with the housing 301 to described in the lower section of plunger 309
The fluid supplement runner mechanism of conveying fracturing fluid in plunger case section inner chamber.Wherein, between the mode of conveying fracturing fluid can be
Every in time conveying, or lasting conveying, the present embodiment, using lasting mode of movement.Such as Fig. 1 and Fig. 6, above-mentioned fluid supplement
Runner mechanism includes at least one fluid supplement hole being opened on housing 301, and each fluid supplement hole is supplemented by fluid respectively
Runner is connected with the plunger case section inner chamber of the lower section of plunger 309；Further runner is supplemented at each fluid supplement hole or in each fluid
It is upper setting check valve 310, it is ensured that fracturing fluid can by each fluid supplement hole enter plunger case section inner chamber in and can not be from plunger case
Section is flowed out to outside housing 301 in inner chamber.Above-mentioned each fluid supplement runner is preferably the downward storke end for being located at plunger 309,
Above-mentioned each check valve 310 can use ball valve.
In addition, one of as the presently preferred embodiments, such as Fig. 1, plunger case section bottom (i.e. the port of export of the plunger case section,
Namely the port of export of this underground booster 3) check valve 311 is set, it is ensured that fracturing fluid can not be from by the discharge of plunger case section
Plunger case section lower section enters in plunger case section inner chamber.Above-mentioned check valve 311 can use ball valve.
Continue the structure of above-mentioned underground booster 3, and similarly, valve block 305 can around the mode of own axis in driving
It is that above-mentioned fracturing fluid realizes above-mentioned purpose preferably using working solution, both in the present embodiment to be realized by electrical equipment etc.
So that this underground booster 3 is simple in construction, and can effectively reduce energy consumption, simultaneously because reducing making for related electric equipment
With being effectively guaranteed the safety of equipment.Such as Fig. 1 and Fig. 2, above-mentioned drive mechanism includes turbine 302, and the turbine 302 is located at
In the housing 301 and positioned at the upper top of valve block 305, the turbine wheel shaft of the turbine 302 is axially parallel to the housing 301
Axial direction, the turbine wheel shaft lower end and the upper top of valve block 305 are connected；It is additionally provided with the housing 301 for radial support
At least one set of righting board muscle 303 of the turbine wheel shaft, righting board muscle 303 described at least one of group is arranged in the turbine 302
Turbo blade above, connected between the turbine wheel shaft and each righting board muscle 303 by TC bearings, each righting
Plate muscle 303 has the opening of its upper and lower ends of at least one insertion.Turbine 302 is driven to rotate by fracturing fluid, so that band
Dynamic upper valve block 305 is rotated on the upper surface of lower disc 306.Further optimize said structure, wherein, such as Fig. 1 and Fig. 8, in upper valve
Protruding upward on the upper surface of piece 305 to be provided with a connecting shaft, the connecting shaft is coaxially disposed with upper valve block 305, can pass through fixed company
The mode of connecing is connected or is integrally formed, that is, it is in a step axle construction to cause above-mentioned upper valve block 305；Above-mentioned drive mechanism also includes a footpath
To TC bearings 304, the connection of the lower thread of the top of radial direction TC bearings 304 and turbine wheel shaft, the bottom of radial direction TC bearings 304 with
The threaded connection of above-mentioned connecting shaft, that is, realize being fixedly connected for turbine wheel shaft and upper valve block 305.In the present embodiment, above-mentioned righting board muscle
303 be two groups, respectively above and below the turbo blade of turbine 302, with more preferable supports turbine shaft.Each righting board muscle
Opening on 303, which is both preferably, sets multiple, arranges in a ring, so as to the readily flowed supreme upper table of valve block 305 of fracturing fluid
Face, and then enter in piston cylinder section.I.e. in the present embodiment, it can realize the rotation of turbine 302 simultaneously to drive by fracturing fluid
Upper valve block 305 rotates and driven piston 308 to compress or reset, the effectively save energy, reduces energy consumption.
Embodiment two
Such as Fig. 1, the present embodiments relate to a kind of downhole pressure increasing fracturing tool, including as above-mentioned embodiment one is provided
Underground booster 3, here is omitted for the concrete structure of the underground booster 3.The plunger case section outlet of the underground booster 3
End is connected with the first packer 4.Above-mentioned packer 4 can use existing packer 4, be specifically as follows using hydraulic expanding
Packer 4, that is, utilize the fracturing fluid of the supercharging entered by underground booster 3 to realize setting for packer 4.
In the present embodiment, using the structure of following preferred packer 4：
Such as Fig. 1, the present embodiment provides a kind of packer 4, and it includes mandrel 42, rubber tube 41, control valve 44, sealing sliding sleeve
48 and fixes sleeve 49, wherein, the plunger case section bottom of the above-mentioned upper end of mandrel 42 and underground booster 3 is connected through a screw thread, close
Envelope sliding sleeve 48, rubber tube 41 and fixes sleeve 49 are sequentially connected one outer barrel of composition from top to bottom, and the outer barrel coaxial sleeve is located at mandrel
Outside 42, and gap (being preferably annular gap) is left between mandrel 42, forming one allows fracturing fluid to enter between storage
Gap chamber 43；The upper and lower ends closing of the spatia 43, specifically, the sealing upper end of sliding sleeve 48 and the plunger case section of underground booster 3
Bottom is abutted and the encapsulation process at abutting, and the bottom interior wall of fixes sleeve 49 is fitted with mandrel 42 and in joint place encapsulation process.
At least one is provided with mandrel 42 and sets runner, each one end for setting runner is connected with above-mentioned spatia 43, the other end
Connected with the inner chamber of mandrel 42, control valve 44 is provided with runner in each set, to control fracturing fluid to pass in and out spatia 43, from
And control setting and unsealing for packer 4.The above-mentioned runner that respectively sets is preferably to be arranged at the top of mandrel 42.Further in mandrel 42
Inside being provided with prevents in the non-return mechanism of frac fluid flow back, the present embodiment, and the non-return mechanism includes an arrow valve 45, a valve seat
47 and limit spring 46, valve seat 47 is fixed in the inner chamber of mandrel 42, and arrow valve 45 is on valve seat 47, and limit spring 46 is used to limit
The up and down motion stroke of arrow valve 45 processed；The specific mounting structure of above-mentioned arrow valve 45, limit spring 46 and valve seat 47 is referred to
Fig. 1, it is that those skilled in the art easily learn that here is omitted according to prior art.In addition, the packer 4 is also wrapped
Limited valve (not shown) is included, for controlling whether the fracturing fluid in the inner chamber of mandrel 42 is discharged in outside packer 4；Work as packer
When pressure meets or exceeds the default restriction pressure value of the pressure limiting valve in 4, the pressure limiting valve is opened, and fracturing fluid can discharge packer
Outside 4.
Embodiment three
Such as Figure 14, the present embodiments relate to a kind of downhole pressure increasing fracturing process, it uses above-described embodiment two to be provided
Downhole pressure increasing fracturing tool carry out downhole pressure increasing pressure break, comprise the following steps：
Step one, conveying gun perforation rifle carries out cable perforation in horizontal well or straight well；
Step 2, rises at perforation hole rifle, downhole pressure increasing fracturing tool described in tripping in perforation 7；
Step 3, fracturing fluid is conveyed to the underground booster 3；By the underground booster 3 by a part of pressure break
Fluid pressurized, sets the first packer 4；As the underground booster 3 works on, pressure in first packer 4
Reach that setting value opens the pressure limiting valve in first packer 4, the stratum at fracturing fluid injection perforation 7, until the layer
Position completes pressure break；
Step 4, unseals first packer 4, acts the downhole pressure increasing fracturing tool；
Step 5, the layer position of pressure break is insulated using bridging plug 6；
Step 6, repeat step one is to step 5, until all stratum all complete pressure break.
Wherein, in above-mentioned steps one, crawl device or the conveying gun perforation rifle of coiled tubing 2 can be used.In above-mentioned steps three, it can lead to
Cross ground routine slush pump 1 and oil pipe or coiled tubing 2 and convey fracturing fluid to underground booster 3.In above-mentioned steps five, specifically
For, bridging plug is linked together with perforating gun, bridging plug and perforating gun are conveyed using waterpower pumping mode in horizontal well or straight well,
And insulated the layer position of pressure break.All stratum are all completed after pressure break, coiled tubing 2 be can be used to bore all bridging plugs, are obtained
To clean pit shaft.
In the above method, no doubt, under initial situation, while fracturing fluid is conveyed to underground booster 3, also may be used
To between downhole pressure increasing fracturing tool and pit shaft annular space convey fracturing fluid, in order to the plunger case of underground booster 3 section
Interior timely supplement fracturing fluid；During follow-up work, enter ground because existing partial open fluid is projected from packer 4
Layer, i.e., the fracturing fluid of existing cross flow in pit shaft now can not convey to annular space conveying or fracturing fluid as needed.
In the present embodiment, due to using downhole pressure increasing fracturing tool, fracturing fluid can be pressurized to needed for pressure break in underground
Pressure, the ground installation pressure break grade used can be no more than 30MPa, the problem of in the absence of high pressure is delivered into shaft bottom by ground,
Without huge land equipment, high pressure pipe joint and wellhead assembly, and the performance requirement of equipment is reduced, thus also reduce pressure
The safety requirements split, therefore, above-mentioned fracturing fluid can be using conventional water, can also be without water, and use nitrogen or dioxy
Change carbon foam etc. to replace, can effectively reduce the consumption of water, can also use low-pressure propane gas, low-pressure propane gas can be in downhole pressure increasing pressure
Shorten LPG colloids into, realize pressure break, and LPG colloids are together with air-fuel mixture, and itself can also be used as fuel, thus not
There are problems that, effectively reduce production cost.
Example IV
Such as Figure 15, the present embodiments relate to a kind of downhole pressure increasing fracturing tool, its basic structure and institute in embodiment two
The downhole pressure increasing fracturing tool of offer is identical, and theing improvement is that also includes one section of pressure difference sliding-sleeve nipple 5 and another section of packer
The downhole pressure increasing fracturing tool that 4, i.e. the present embodiment are provided includes the underground booster 3 that embodiment one is provided, in addition to second
Packer 8, the packer 9 of pressure difference sliding-sleeve nipple 5 and the 3rd, the plunger case section of the underground booster 3, second packer 8,
The pressure difference sliding-sleeve nipple 5 and the 3rd packer 9 are sequentially connected, and constitute an overall structure, preferably using threaded connection
Mode.Above-mentioned second packer 8 is identical with the structure of the first packer 4 employed in embodiment two with the 3rd packer 9.
Above-mentioned pressure difference sliding-sleeve nipple 5 can use existing pressure difference sliding-sleeve nipple 5；In the present embodiment, using following preferred
The structure of pressure difference sliding-sleeve nipple 5：
Such as Figure 16-Figure 17, the pressure difference sliding-sleeve nipple 5 includes sliding sleeve body 52, piston type sliding sleeve 53, spring 54 and seal
55, multiple spray-holes 51 are offered on sliding sleeve body 52, and piston type sliding sleeve 53 is slidedly arranged in the inner chamber of sliding sleeve body 52, by this
The sliding process of piston type sliding sleeve 53 can turn on or separate the connected relation of spray-hole 51 and the inner chamber of sliding sleeve body 52；The seal
55 in a ring, and the outer annular diameter of seal 55 is adapted to and is fixed in sliding sleeve body 52 with the internal diameter of sliding sleeve body 52, the seal
55 annular diameters are adapted to piston type sliding sleeve 53, are slid so that piston type sliding sleeve 53 can be sealed along the seal 55.Above-mentioned work
Plug sliding sleeve 53 is in funnel-form, including a direct tube section and a conical cylinder section wide at the top and narrow at the bottom, wherein, the top of conical cylinder section is close to second
Packer 8 is set, and the conical cylinder section top end diameter is identical with the internal diameter of sliding sleeve body 52, so as to be slided along the inwall of sliding sleeve body 52
Move, the conical cylinder section bottom is connected with above-mentioned direct tube section, and above-mentioned direct tube section external diameter is identical with the above-mentioned annular diameters of seal 55, so that
It can be slid along the seal 55.Above-mentioned spring 54 is sheathed on above-mentioned piston type sliding sleeve 53, and one end is connected to above-mentioned conical cylinder section top
End, the other end is connected on seal 55.
In use, pressure fluid enters in sliding sleeve body 52, and act on and (acted on above-mentioned piston type sliding sleeve 53
State conical cylinder section top), spring 54 is compressed, and piston type sliding sleeve 53 is sealed along seal 55 and slid, and makes the spray on sliding sleeve body 52
Perforation 51 is turned on the inner chamber of sliding sleeve body 52, and fracturing fluid can enter stratum by spray-hole 51.
Embodiment five
Such as Figure 18, the present embodiments relate to a kind of downhole pressure increasing fracturing process, it uses above-described embodiment four to be provided
Downhole pressure increasing fracturing tool carry out downhole pressure increasing pressure break, comprise the following steps：
Step one, conveying gun perforation rifle carries out the perforation on whole stratum in horizontal well or straight well；
At step 2, the perforation 7 of downhole pressure increasing fracturing tool described in tripping in end, and make the pressure difference sliding-sleeve nipple 5
Just to perforation 7, second packer 8 surrounds the region of end perforation 7 with the 3rd packer 9；
Step 3, fracturing fluid is conveyed to the underground booster 3；By the underground booster 3 by a part of pressure break
Fluid pressurized, sets second packer 8；As the underground booster 3 works on, in second packer 8
Pressure reaches that setting value opens the pressure limiting valve in second packer 8, fracturing fluid inject the pressure difference sliding-sleeve nipple 5 and
In 3rd packer 9, and set above-mentioned 3rd packer 9；As the underground booster 3 works on, the pressure
Pressure in poor sliding-sleeve nipple 5 reaches setting value, opens the pressure difference sliding-sleeve nipple 5, fracturing fluid enters stratum, until this
Layer position completes pressure break；
Step 4, unseals second packer 8 and the 3rd packer 9, by the downhole pressure increasing fracturing tool
Draw backward to next perforation 7, and make the pressure difference sliding-sleeve nipple 5 just to perforation 7, second packer 8 and described the
Three packers 9 surround the region of end perforation 7；Repeat step three, makes this layer of position complete pressure break；
Step 5, repeat step four, until all stratum all complete pressure break.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God is with principle, and any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (10)
1. a kind of underground booster, it is characterised in that：Including housing, the housing includes the piston cylinder being sequentially arranged from top to bottom
Section and plunger case section, the inner chamber of the piston cylinder section and plunger case section are turned on, and are slidably equipped with piston in the piston cylinder section, institute
State and plunger is slidably equipped with plunger case section, the piston connects and composes a step axle construction wide at the top and narrow at the bottom with the plunger；
Sprue mechanism and piston reset sprue mechanism are compressed provided with piston in the housing, the piston compresses sprue machine
Structure is used to piston cylinder section inner chamber conveying fracturing fluid with piston reset sprue mechanism, wherein, the piston compression
The port of export of sprue mechanism is located above the piston, and the port of export of the piston reset sprue mechanism is located at the piston
Lower section；
The fluid supplement of the conveying fracturing fluid into the plunger case section inner chamber below the plunger is additionally provided with the housing
Runner mechanism.
2. underground booster as claimed in claim 1, it is characterised in that：Upper valve block and lower disc are provided with the housing；
The lower disc is fixed in the housing cavity and positioned at piston cylinder section top, forms the cylinder of the piston cylinder section
Top；
The upper valve block is closely against on the upper surface of the lower disc.
3. underground booster as claimed in claim 2, it is characterised in that：The lower disc is provided with the first eccentric through-hole and side
Through hole, first eccentric through-hole and the equal eccentric setting of the by-pass prot and eccentric throw is identical, the first eccentric through-hole insertion
The lower disc upper and lower ends, the by-pass prot arrival end is opened in the lower disc upper surface, the port of export be opened in it is described under
On the wall of valve block side；
In the outlet that piston reset sprue, described piston reset sprue one end and the by-pass prot are provided with the housing wall
End connection, the other end is connected with the inner chamber of piston cylinder section and below the piston；
It is correspondingly provided with the second eccentric through-hole on the upper valve block, upper valve block upper and lower ends described in the second eccentric through-hole insertion,
The eccentric throw of second eccentric through-hole is identical with the eccentric throw of first eccentric through-hole；
The upper valve block is connected with the drive mechanism for driving it to be rotated around itself vertical axis.
4. underground booster as claimed in claim 3, it is characterised in that：Also include being used in piston compression process by described in
The piston that fracturing fluid described in piston cylinder section below piston is directed to outside the housing compresses auxiliary runner mechanism；
The piston, which compresses auxiliary runner mechanism, includes first piston compression secondary flow road and second piston in the housing wall
Secondary flow road and the first guiding gutter on the upper valve block side wall are compressed,
The first piston compression secondary flow road two ends are opened in the inner walls, wherein one end and piston cylinder section
Inner chamber is connected and below the piston, and the other end is in close proximity to the upper valve block side wall and set,
Second piston compression secondary flow road one end open in the inner walls and being in close proximity to the upper valve block side wall and set,
The other end is opened on the housing exterior walls；
When first eccentric through-hole is turned on second eccentric through-hole, first guiding gutter compresses with the first piston
Secondary flow road and second piston compression secondary flow road are both turned on；It is described when the by-pass prot is turned on second eccentric through-hole
First guiding gutter is closed by the inner walls.
5. underground booster as claimed in claim 3, it is characterised in that：Also include being used for during piston reset by described in
The auxiliary runner mechanism of piston reset that fracturing fluid described in piston cylinder section above piston is directed to outside the housing；
First piston of the auxiliary runner mechanism of piston reset including first guiding gutter, in the housing wall resets auxiliary
Runner and second piston reset secondary flow road,
The first piston resets secondary flow road two ends and is opened in the inner walls, wherein one end and piston cylinder section
Inner chamber is connected and above the piston, and the other end is in close proximity to the upper valve block side wall and set,
The second piston resets secondary flow road one end open in the inner walls and being in close proximity to the upper valve block side wall and set,
The other end is opened on the housing exterior walls；
When the by-pass prot is turned on second eccentric through-hole, first guiding gutter resets secondary flow road with the first piston
And second piston resets secondary flow road and is both turned on；When first eccentric through-hole is turned on second eccentric through-hole, described first
Guiding gutter is closed by the inner walls.
6. a kind of downhole pressure increasing fracturing tool, it is characterised in that：Increase including the underground as any one of claim 1 to 5
Depressor, the plunger case section port of export of the underground booster is connected with the first packer.
7. a kind of method that downhole pressure increasing pressure break is carried out using downhole pressure increasing fracturing tool as claimed in claim 6, its feature
It is, comprises the following steps：
Step one, conveying gun perforation rifle carries out cable perforation in horizontal well or straight well；
Step 2, plays perforation hole rifle, described in tripping at downhole pressure increasing fracturing tool to perforation；
Step 3, fracturing fluid is conveyed to the underground booster；A part of fracturing fluid is increased by the underground booster
Pressure, makes the first packer setting；As the underground booster works on, pressure reaches setting value in first packer
Open the pressure limiting valve in first packer, the stratum at fracturing fluid injection perforation, until this layer of position completes pressure break；
Step 4, makes first removing seal for packer, acts the downhole pressure increasing fracturing tool；
Step 5, the layer position of pressure break is insulated using bridging plug；
Step 6, repeat step one is to step 5, until all stratum all complete pressure break.
8. downhole pressure increasing fracturing process as claimed in claim 7, it is characterised in that：The fracturing fluid is water, nitrogen, dioxy
Change carbon foam or low-pressure propane gas.
9. a kind of downhole pressure increasing fracturing tool, it is characterised in that：Increase including the underground as any one of claim 1 to 5
Depressor, in addition to the second packer, pressure difference sliding-sleeve nipple and the 3rd packer, the underground booster plunger case section, it is described
Second packer, the pressure difference sliding-sleeve nipple and the 3rd packer are sequentially connected.
10. a kind of method that downhole pressure increasing pressure break is carried out using downhole pressure increasing fracturing tool as claimed in claim 9, its feature
It is, comprises the following steps：
Step one, conveying gun perforation rifle carries out the perforation on whole stratum in horizontal well or straight well；
At step 2, downhole pressure increasing fracturing tool described in tripping in the perforation of end, and make the pressure difference sliding-sleeve nipple just to penetrating
Hole, second packer surrounds the end perforated zone with the 3rd packer；
Step 3, fracturing fluid is conveyed to the underground booster；A part of fracturing fluid is increased by the underground booster
Pressure, makes second packer setting；As the underground booster works on, in second packer, pressure, which reaches, sets
Definite value opens the pressure limiting valve in second packer, and fracturing fluid injects the pressure difference sliding-sleeve nipple and the 3rd packing
In device, and make above-mentioned 3rd packer setting；As the underground booster works on, the pressure in the pressure difference sliding-sleeve nipple
Power reaches setting value, opens the pressure difference sliding-sleeve nipple, and fracturing fluid enters stratum, until this layer of position completes pressure break；
Step 4, makes second packer and the 3rd removing seal for packer, by the downhole pressure increasing fracturing tool to rear dragging
It is pulled at next perforation, and makes the pressure difference sliding-sleeve nipple just to perforation, second packer and the 3rd packer will
The end perforated zone is surrounded；Repeat step three, makes this layer of position complete pressure break；
Step 5, repeat step four, until all stratum all complete pressure break.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610901767.0A CN106351814B (en) | 2016-10-14 | 2016-10-14 | Underground booster, downhole pressure increasing fracturing tool and downhole pressure increasing fracturing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610901767.0A CN106351814B (en) | 2016-10-14 | 2016-10-14 | Underground booster, downhole pressure increasing fracturing tool and downhole pressure increasing fracturing process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106351814A CN106351814A (en) | 2017-01-25 |
| CN106351814B true CN106351814B (en) | 2017-08-25 |
Family
ID=57865888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610901767.0A Active CN106351814B (en) | 2016-10-14 | 2016-10-14 | Underground booster, downhole pressure increasing fracturing tool and downhole pressure increasing fracturing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106351814B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106968640A (en) * | 2017-03-15 | 2017-07-21 | 西南石油大学 | A kind of drainage underground gas production instrument |
| CN107165606B (en) * | 2017-06-26 | 2023-07-21 | 中国石油天然气集团有限公司 | High-pressure negative-pressure separate mining device on upper layer |
| CN107829712B (en) * | 2017-10-31 | 2021-01-12 | 山东鹤鹏技术有限公司 | Perforation supercharging equipment |
| CN108756872B (en) * | 2018-06-08 | 2023-12-12 | 地泰科学仪器（武汉）有限公司 | Hydraulic fracturing method ground stress testing device with constant diameter design |
| CN112031726B (en) * | 2020-08-31 | 2022-07-01 | 长江大学 | Turbine drive circumference sliding sleeve formula pulse generation instrument |
| CN112647915A (en) * | 2020-12-21 | 2021-04-13 | 长江大学 | Screw-driven piston type hydraulic pulse excitation tool |
| CN113294157B (en) * | 2021-05-10 | 2023-02-28 | 太原理工大学 | Salt layer cavity construction control method for accelerating dissolution and collapse of medium and thick compact interlayers |
| CN116658143B (en) * | 2023-07-17 | 2023-10-27 | 延长油田股份有限公司七里村采油厂 | Open hole fracturing crack directional opening tool and construction method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206268024U (en) * | 2016-10-14 | 2017-06-20 | 海斯比得（武汉）石油科技有限公司 | Underground booster and downhole pressure increasing fracturing tool |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2843609B1 (en) * | 2002-08-13 | 2004-10-29 | Cie Du Sol | INJECTION HEAD UNDER PRESSURE OF A FLUID TO DISAGGATE THE LAND FROM A BOREHOLE |
| CN102704857B (en) * | 2012-06-21 | 2014-06-11 | 中国石油大学(华东) | Underground supercharging and accelerating system |
| CN104235009B (en) * | 2014-09-16 | 2017-03-15 | 三一石油智能装备有限公司 | Piston of conveying cylinder lubricating system and pump truck |
| CN104806220A (en) * | 2015-04-24 | 2015-07-29 | 山东科瑞机械制造有限公司 | Fully-hydraulic driven fracturing equipment |
-
2016
- 2016-10-14 CN CN201610901767.0A patent/CN106351814B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206268024U (en) * | 2016-10-14 | 2017-06-20 | 海斯比得（武汉）石油科技有限公司 | Underground booster and downhole pressure increasing fracturing tool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106351814A (en) | 2017-01-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106351814B (en) | Underground booster, downhole pressure increasing fracturing tool and downhole pressure increasing fracturing process | |
| CN105332684B (en) | A kind of water under high pressure is quick-fried and CO2The coal bed gas displacement extraction technique that pressure break is combined | |
| CN105089596B (en) | Hydraulic fracturing transformation method for unconventional reservoir oil and gas well | |
| CN102094612B (en) | Active water fracturing technology of coal-bed gas well | |
| CN104632174A (en) | Coal seam liquid carbon dioxide fracturing device and method | |
| CN104755695B (en) | Method for the underground adapter assembly of flow control and for completing pit shaft | |
| CN104364465A (en) | System and process for extracting oil and gas by hydraulic fracturing | |
| CN103306657B (en) | A kind of coal seam cutting release is anti-reflection and slot holding device and method | |
| CN204419145U (en) | Coal seam liquid carbon dioxide fracturing device | |
| CN201041023Y (en) | Gas-liquid mixed injection method liquid level-lowering induced spraying construction device | |
| CN110295879A (en) | A kind of staged fracturing horizontal well in segments period note adopts dual string | |
| CN105507940A (en) | Slotting, plugging and fracturing integrated type intensified marsh gas extraction device and method | |
| CN108019190A (en) | A kind of totally-enclosed mixes defeated decompression circulation gas lift system | |
| CN110593841A (en) | Online filling device and temporary plugging method of water-soluble temporary plugging agent for steering fracturing | |
| EA035183B1 (en) | Method of fracturing utilizing an air/fuel mixture | |
| CN106321046A (en) | Hydraulic sand fracturing gas extraction method for underground coal seam with low air permeability | |
| CN106050198B (en) | Comprehensive drainage gas production system for low-pressure low-yield well | |
| CN117662229B (en) | Three-phase fracturing permeability-increasing method for coal seam | |
| US9784080B2 (en) | Tubless proppant blending system for high and low pressure blending | |
| CN206268024U (en) | Underground booster and downhole pressure increasing fracturing tool | |
| CN102352747A (en) | Pressure-control injection yield-increasing method for coal-bed gas well | |
| CN108071376B (en) | Injection and production string in coal-bed gas well | |
| CN112796727A (en) | Composite volume fracturing system and method for continental facies shale reservoir | |
| CN205858263U (en) | Formula squeezing leak stoppage device is sent in a kind of down-hole | |
| CN109372488B (en) | Swing type continuous proppant filling device for coal mine hydraulic fracturing and filling method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240704 Address after: Room 1205-1-20, Building C, No.16 North Ring Road, Taicang Port Economic and Technological Development Zone, Taicang City, Suzhou City, Jiangsu Province, China 215400 Patentee after: Jiangsu Pumpuneng Technology Development Co.,Ltd. Country or region after: China Address before: 430070 Room 201, room 03, 1-2 / F, building B4, phase II construction project of financial backstage service center base, 77 Guanggu Avenue, Donghu New Technology Development Zone, Wuhan City, Hubei Province Patentee before: HISPEED (WUHAN) PETROLEUM TECHNOLOGY Co.,Ltd. Country or region before: China |