CN104500018B - A kind of repeatable switch waterpower spray gun of fluid pressure type - Google Patents
A kind of repeatable switch waterpower spray gun of fluid pressure type Download PDFInfo
- Publication number
- CN104500018B CN104500018B CN201410785747.2A CN201410785747A CN104500018B CN 104500018 B CN104500018 B CN 104500018B CN 201410785747 A CN201410785747 A CN 201410785747A CN 104500018 B CN104500018 B CN 104500018B
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- China
- Prior art keywords
- top connection
- sliding sleeve
- spray gun
- pressure
- spray
- 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.)
- Expired - Fee Related
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- 239000007921 spray Substances 0.000 title claims abstract description 53
- 239000012530 fluid Substances 0.000 title claims abstract description 20
- 230000007704 transition Effects 0.000 claims abstract description 25
- 238000007789 sealing Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 5
- 238000009738 saturating Methods 0.000 claims 2
- 230000015572 biosynthetic process Effects 0.000 abstract description 10
- 239000007788 liquid Substances 0.000 abstract description 8
- 230000000149 penetrating effect Effects 0.000 abstract description 6
- 230000008021 deposition Effects 0.000 abstract description 3
- 230000008014 freezing Effects 0.000 abstract description 3
- 238000007710 freezing Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 238000000151 deposition Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000003190 augmentative effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
- B05B9/01—Spray pistols, discharge devices
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (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)
- Catching Or Destruction (AREA)
- Nozzles (AREA)
Abstract
The present invention relates to a kind of repeatable switch waterpower spray gun of fluid pressure type, including top connection, gun body, transition joint, lower contact and sliding sleeve, top connection, transition joint, gun body and lower contact are sequentially connected with to form tubing string, and sliding sleeve is located inside tubing string；Top connection is internally provided with baffle ring, and top connection lower inner wall is provided with inner convex platform and penetrates the pressure relief vent of top connection tube wall, and pressure relief vent is located above inner convex platform；The spray-hole for penetrating sliding sleeve tube wall is provided with the middle part of sliding sleeve, the front end connection outer lug boss of sliding sleeve, outer lug boss is located at below baffle ring, outer lug boss bottom, top connection inwall, inner convex platform and sliding sleeve formation track groove.By changing the size between tubing pressure and casing pressure, constantly realize the opening and closing of spray gun, so during reverse circulating, will be in lower spray gun formation circulation canal inside and outside oil pipe, the proppant of deposition will all take pit shaft out of with liquid stream in pit shaft, the risk of bit freezing is eliminated, makes operating tool string smoothly will rise.
Description
Technical field
The invention belongs to oil field well construction operation technical field of tools, and in particular to a kind of repeatable switch of fluid pressure type
Waterpower spray gun, is the part for realizing double clusters or the process pipe string of many cluster hydraulic jetting fracturings construction, is to realize thoroughly counter follow
The indispensable instrument of ring sand washing.
Background technology
Hydraulic fracturing technology have passed through the development of nearly half a century, particularly since the end of the eighties, in FRACTURING DESIGN, pressure
Split and all obtain rapid development in terms of liquid and additive, proppant, fracturing unit and monitoring instrument and Crack Monitoring, make
Hydraulic fracturing technology is in fracture height control technology, high permeability formation sand control pressure break, refracturing, deep penetrating fracture and large sand amount multistage pressure
New breakthrough is all occurred in that in terms of splitting.
Present water conservancy pressure break is oilfield stimulation, augmented injection, keeps an important process technology of oilfield stable production.It utilizes liquid
The performance of conducting pressure, utilizes high pressure pump group on ground, high viscosity liquid is pumped into well with the discharge capacity more than formation absorption ability
In, high pressure is suppressed in shaft bottom, this pressure exceedes the crustal stress and tensile strength of rock of oil reservoir, crack is produced in bottom, continuing will
Load fluid injection crack with proppant, crack side obtains extension edge and is supported.Just being formd after termination of pumping in oil reservoir has
The Thief zone sand packed fracture of one fixed width, the oil gas flow channel due to this crack growth, changes the type of flow, reduces
Filtrational resistance, can play increasing yield and injection effect, this work progress is exactly oil formation hydraulic fracturing.
The double clusters of water-jet or many clusters injection fracturing technique are largely used in low permeability formation rebuilding construction at present,
The spray gun of many cluster hydraulic jetting fracturings at this stage be pitching skid set open spray gun, such spray gun after switching can not be real
Existing closed mode.Then, after pressing crack construction terminates, in pit shaft after depositing support agent, during reverse circulating, inside and outside oil pipe
Liquid can not take the proppant below upper spray gun out of pit shaft during passage, therefore reacting cycle can be formed in upper spray gun, easily
Generation lock of tool drilling.Therefore, being smoothed out, it is necessary to which developing fluid pressure type can weigh for guarantee hydraulic jetting fracturing technology multilayer construction
Spray gun is switched again.
The content of the invention
The purpose of the present invention is to overcome the double clusters of existing water-jet or the spray gun of many clusters injection pressure break to be generally that pitching is skidded
Set opens spray gun, and this spray gun can not realize closing after switching, the problem of easily occurring lock of tool drilling.
Therefore, the invention provides a kind of repeatable switch waterpower spray gun of fluid pressure type, including top connection, gun body, under
Multiple nozzles, in addition to transition joint, top connection, transition joint, spray gun sheet are circumferentially distributed with joint and sliding sleeve, gun body
Body and lower contact are sequentially connected with to form tubing string, and sliding sleeve is located inside the tubing string；
Top connection inner upper is provided with baffle ring along inwall, and top connection lower inner wall is provided with inner convex platform and penetrates top connection
The pressure relief vent of tube wall, pressure relief vent is located above inner convex platform；
The spray-hole for penetrating sliding sleeve tube wall is provided with the middle part of sliding sleeve, the front end connection outer lug boss of sliding sleeve, outer lug boss is located at gear
Below ring, outer lug boss bottom, top connection inwall, inner convex platform and sliding sleeve formation track groove.
The length of described track groove is equal to the distance of the spray-hole hole heart and the nozzle bore heart.
Described top connection bottom is provided with multiple banking pins for penetrating top connection tube wall, the head of the banking pin and convex
Platform side is concordant.
Between described baffle ring and top connection inwall, top connection and transition joint junction, transition joint and gun body
Junction, gun body and lower contact junction are provided with sealing ring.
Described transition joint is that multi-step is connected with the junction of top connection, gun body, and each platform place of connecing is all provided with
Put sealing ring.
Described nozzle has three, is circumferentially distributed on the tube wall of gun body, and described injection hole number is three, point
Do not corresponded in the axial direction with three nozzles.
It is connected through a screw thread between described top connection, transition joint, gun body and lower contact, is followed successively by top connection
Lower end internal thread is screwed with transition joint upper external screw thread, transition joint lower end external screw thread and gun body upper end internal thread rotation
Close, gun body lower end external screw thread is screwed with lower contact upper end internal thread.
Beneficial effects of the present invention：The repeatable switch waterpower spray gun of this fluid pressure type that the present invention is provided can realize hydraulic pressure
Close, hydraulic pressure opening, can be according to construction process requirement, the unlatching of the control spray gun of orientation in water-jet work progress
And closing, for double cluster hydraulic jetting fracturing tubing strings, spray gun is switched pump in spray gun, oil pipe by us with this fluid pressure type is repeatable
Note, oil pressure rise, the sliding sleeve that pressure difference opens spray gun will be moved down in pressure effect, be opened spray gun, be realized hydraulic jetting fracturing.
When pressure break terminates, infusion in annular space lifts casing pressure, and the sliding sleeve of spray gun will be moved up under pressure, to close spray gun.
, will be in lower spray gun formation circulation canal inside and outside oil pipe so during reverse circulating, the proppant of deposition will be with pit shaft
Liquid stream and all take pit shaft out of, eliminate the risk of bit freezing, make operating tool string smoothly will rise.
The present invention is described in further details below with reference to accompanying drawing.
Brief description of the drawings
Fig. 1 is the structural representation that the present invention is in spray gun closed mode.
Fig. 2 is the structural representation that the present invention is in spray gun opening.
Description of reference numerals：1st, top connection；2nd, baffle ring；3rd, track groove；4th, banking pin；5th, outer lug boss；6th, inner convex platform；7th, in
Between joint；8th, nozzle；9th, gun body；10th, lower contact；11st, spray-hole；12nd, sliding sleeve；13rd, pressure relief vent.
Embodiment
Embodiment 1：
The present embodiment provides a kind of fluid pressure type repeatable switch waterpower spray gun, as shown in figure 1, including top connection 1, spray gun sheet
Circumferentially it is distributed with multiple nozzles 8, in addition to transition joint 7 on body 9, lower contact 10 and sliding sleeve 12, gun body 9, top connection 1,
Transition joint 7, gun body 9 and lower contact 10 are sequentially connected with to form tubing string, and sliding sleeve 12 is located inside the tubing string；
The inner upper of top connection 1 is provided with baffle ring 2 along inwall, and the lower inner wall of top connection 1 is provided with inner convex platform 6 and penetrated
The pressure relief vent 13 of the tube wall of joint 1, pressure relief vent 13 is located at the top of inner convex platform 6；
The middle part of sliding sleeve 12 is provided with the spray-hole 11 for penetrating the tube wall of sliding sleeve 12, the front end connection outer lug boss 5 of sliding sleeve 12, evagination
Platform 5 is located at the lower section of baffle ring 2, the bottom of outer lug boss 5, the inwall of top connection 1, inner convex platform 5 and the formation track groove 3 of sliding sleeve 12.
The implementation principle of the present embodiment is as follows：In this structure of the present embodiment, pressure relief vent 13 realize tubing pressure and
The interaction of casing pressure, casing pressure is acted in track groove 3, and tubing pressure can be acted on sliding sleeve 12.
The initial position of spray gun is serially connected on oil pipe column, works as needs as shown in figure 1, now spray gun is closed
Or when hydraulic fracturing, the oily overpressure of lifting makes the pressure in the repeatable switch spray gun of fluid pressure type can more than fluid pressure type
Pressure outside repeat switch spray gun, now because outer lug boss 5 and the bottom of sliding sleeve 12 have difference in areas, so acting on both
Tubing pressure there is pressure differential, sliding sleeve 12 is moved downward in the presence of pressure differential so that outer lug boss 5 is downwards in withstand
Boss 5, now nozzle 8 overlapped with spray-hole 11, as shown in Figure 2 so that spray gun open, complete hydraulic fracturing.
When needing to close spray gun, casing pressure is lifted so that the pressure in the repeatable switch spray gun of fluid pressure type is less than liquid
Pressure outside the repeatable switch spray gun of pressure type, casing pressure enters track groove 3 by pressure relief vent 13, and power acts on the bottom of outer lug boss 5, pushed away
Dynamic outer lug boss 5 and sliding sleeve 12 are moved upwards so that nozzle 8 departs from spray-hole 11, and spray gun is closed, and comes back to position shown in Fig. 1
Put.
Embodiment 2：
On the basis of embodiment 1, in the present embodiment, the length of track groove 3 is equal to the hole heart of spray-hole 11 and the hole heart of nozzle 8
Distance.Such structure can make it that just spray-hole 11 and nozzle 8 are complete to the heart when outer lug boss 5 props up inner convex platform 6
Opened into spray gun.
Further, in the present embodiment, the bottom of top connection 1 is provided with multiple banking pins 4 for penetrating the tube wall of top connection 1, should
The head of banking pin 4 is concordant with the side of inner convex platform 6.
The effect of banking pin 4 instead of the position-limiting action of inner convex platform 6, certainly now in structure in order to accurate, track groove 3
Length should arrive the distance of banking pin 4 for outer lug boss 5, and the distance is equal to the distance of the hole heart of spray-hole 11 and the hole heart of nozzle 8.
Embodiment 3：
In the present embodiment, between baffle ring 2 and the inwall of top connection 1, top connection 1 and the junction of transition joint 7, transition joint 7
Sealing ring is provided with the junction of gun body 9, gun body 9 and the junction of lower contact 10.
Transition joint 7 is that multi-step is connected with the junction of top connection 1, gun body 9, and each platform place of connecing is respectively provided with close
Seal, the sealed sealing of multi-step is more efficient.
The effect of sealing ring is in order that the holding isolation of spray gun external and internal pressure, can only carry out external and internal pressure at track groove 3
Contact, main function principle of the invention is i.e. at track groove 3, so the addition of sealing ring, can be more beneficial for the present invention's
Implement.
In the present embodiment, nozzle 8 has three, on the tube wall for being circumferentially distributed on gun body 9, and described spray-hole 11 is counted
Measure as three, corresponded in the axial direction with three nozzles 8 respectively.
It is connected through a screw thread between top connection 1, transition joint 7, gun body 9 and lower contact 10, is followed successively by top connection 1
Lower end internal thread is screwed with the upper external screw thread of transition joint 7, the lower end external screw thread of transition joint 7 and the upper end internal thread of gun body 9
Screw, the lower end external screw thread of gun body 9 is screwed with the upper end internal thread of lower contact 10.
In summary, the repeatable switch waterpower spray gun of this fluid pressure type of the invention, by changing tubing pressure and sleeve pipe
Size between pressure, can constantly realize the opening and closing of spray gun, so during reverse circulating, will be inside and outside oil pipe
The proppant of deposition will all take pit shaft out of with liquid stream in lower spray gun formation circulation canal, pit shaft, eliminate the wind of bit freezing
Danger, makes operating tool string smoothly will rise.
It is exemplified as above be only to the present invention for example, do not constitute the limitation to protection scope of the present invention, it is all
It is to be belonged to the same or analogous design of the present invention within protection scope of the present invention.
Claims (2)
1. a kind of repeatable switch waterpower spray gun of fluid pressure type, including top connection（1）, gun body（9）, lower contact（10）And sliding sleeve
（12）, gun body（9）Multiple nozzles are distributed with upper circumference（8）, it is characterised in that：Also include transition joint（7）, top connection
（1）, transition joint（7）, gun body（9）And lower contact（10）It is sequentially connected with to form tubing string, sliding sleeve（12）In the tubing string
Portion；Top connection（1）Inner upper is provided with baffle ring along inwall（2）, top connection（1）Lower inner wall is provided with inner convex platform（6）With wear
Saturating top connection（1）The pressure relief vent of tube wall（13）, pressure relief vent（13）Positioned at inner convex platform（6）Top；Sliding sleeve（12）Middle part, which is provided with, wears
Saturating sliding sleeve（12）The spray-hole of tube wall（11）, sliding sleeve（12）Front end connection outer lug boss（5）, outer lug boss（5）Positioned at baffle ring（2）Under
Side, outer lug boss（5）Bottom, top connection（1）Inwall, inner convex platform（6）And sliding sleeve（12）Form track groove（3）；Described track groove
（3）Length be equal to spray-hole（11）The hole heart and nozzle（8）The distance of the hole heart；Described top connection（1）Bottom is provided with multiple
Penetrate top connection（1）The banking pin of tube wall（4）, the banking pin（4）Head and inner convex platform（6）Side is concordant；Described baffle ring
（2）With top connection（1）Between inwall, top connection（1）With transition joint（7）Junction, transition joint（7）With gun body（9）
Junction, gun body（9）With lower contact（10）Junction is provided with sealing ring；Described transition joint（7）With top connection
（1）, gun body（9）Junction be multi-step connection, be respectively provided with sealing ring at each step；Described nozzle（8）Have
Three, circumferentially it is distributed on gun body（9）Tube wall on, described spray-hole（11）Quantity is three, respectively with three nozzles
（8）Correspond in the axial direction；
When still hydraulic fracturing is needed, the oily overpressure of lifting makes the pressure in the repeatable switch spray gun of fluid pressure type big
Pressure outside the repeatable switch spray gun of fluid pressure type, now because outer lug boss and sliding sleeve bottom have difference in areas, so effect
There is pressure differential in the tubing pressure on both, slide over and move downward in the presence of pressure differential so that outer lug boss downwards until
Inner convex platform is withstood, now nozzle is overlapped with spray-hole so that spray gun is opened, complete hydraulic fracturing；When needing to close spray gun
Wait, lift casing pressure so that the pressure in the repeatable switch spray gun of fluid pressure type is less than the pressure outside the repeatable switch spray gun of fluid pressure type,
Casing pressure enters track groove by pressure relief vent, and power acts on outer lug boss bottom, promotes outer lug boss and sliding sleeve to move upwards so that nozzle
Depart from spray-hole, spray gun is closed.
2. the repeatable switch waterpower spray gun of fluid pressure type as claimed in claim 1, it is characterised in that：Described top connection（1）, in
Between joint（7）, gun body（9）And lower contact（10）Between be connected through a screw thread, be followed successively by top connection（1）Lower end internal thread
With transition joint（7）Upper external screw thread is screwed, transition joint（7）Lower end external screw thread and gun body（9）Upper end internal thread is screwed,
Gun body（9）Lower end external screw thread and lower contact（10）Upper end internal thread is screwed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410785747.2A CN104500018B (en) | 2014-12-18 | 2014-12-18 | A kind of repeatable switch waterpower spray gun of fluid pressure type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410785747.2A CN104500018B (en) | 2014-12-18 | 2014-12-18 | A kind of repeatable switch waterpower spray gun of fluid pressure type |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104500018A CN104500018A (en) | 2015-04-08 |
| CN104500018B true CN104500018B (en) | 2017-10-17 |
Family
ID=52941457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410785747.2A Expired - Fee Related CN104500018B (en) | 2014-12-18 | 2014-12-18 | A kind of repeatable switch waterpower spray gun of fluid pressure type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104500018B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5029644A (en) * | 1989-11-08 | 1991-07-09 | Halliburton Company | Jetting tool |
| US7997344B2 (en) * | 2007-09-11 | 2011-08-16 | Baker Hughes Incorporated | Multi-function indicating tool |
| CN201165862Y (en) * | 2008-01-25 | 2008-12-17 | 毛万里 | Hydraulic control oil field downhole multi-time opening-closing valve and opening-closing tools |
| CN201190552Y (en) * | 2008-04-02 | 2009-02-04 | 毛万里 | Mechanically controlled multi-time on-off valve |
| US8607811B2 (en) * | 2010-07-07 | 2013-12-17 | Baker Hughes Incorporated | Injection valve with indexing mechanism |
| CN202544828U (en) * | 2012-04-16 | 2012-11-21 | 江苏如通石油机械股份有限公司 | Multi-section sliding sleeve type abrasive perforating and fracturing tool |
| CN204357409U (en) * | 2014-12-18 | 2015-05-27 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of fluid pressure type can repeat switch waterpower spray gun |
-
2014
- 2014-12-18 CN CN201410785747.2A patent/CN104500018B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN104500018A (en) | 2015-04-08 |
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| TR01 | Transfer of patent right |
Effective date of registration: 20201028 Address after: 100007 Dongcheng District, Dongzhimen, China, North Street, No. 9 Oil Mansion, No. Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CHINA NATIONAL PETROLEUM CORPORATION CHUANQING DRILLING ENGINEERING Co. Address before: 710018 Shaanxi province Xi'an Weiyang Changqing Changqing prosperous Park District Building Room 1207 Patentee before: CHINA NATIONAL PETROLEUM CORPORATION CHUANQING DRILLING ENGINEERING COMPANY LIMITED CHANGQING DOWNHOLE TECHNOLOGY Co. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171017 Termination date: 20211218 |