CN105201476B - A kind of sleeve type hydraulic jeting device and the tubing string including device - Google Patents
A kind of sleeve type hydraulic jeting device and the tubing string including device Download PDFInfo
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- CN105201476B CN105201476B CN201410268164.2A CN201410268164A CN105201476B CN 105201476 B CN105201476 B CN 105201476B CN 201410268164 A CN201410268164 A CN 201410268164A CN 105201476 B CN105201476 B CN 105201476B
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- packing element
- sliding sleeve
- intercommunicating pore
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Abstract
A kind of tubing string the present invention relates to sleeve type hydraulic jeting device and comprising device.Device includes body, lower contact, the packing units being arranged between body and lower contact, and slidingtype is arranged on the inner sliding sleeve on the inner chamber of body, nozzle is set in the side wall of body, packing units have the packing element in the centrally disposed pipe outer wall of the central tube that one end is fixedly connected with body and the other end is fixedly connected with lower contact, circulating type, wherein, intercommunicating pore is provided with central tube side wall, inner sliding sleeve is in the opening position that can block nozzle and intercommunicating pore before perforation, and in perforation, inner sliding sleeve, which moves, exposes nozzle and intercommunicating pore.When two or more devices are set on tubing string, pressure break can be sprayed in work progress step by step, realizes one-trip string pressure break multistage.Thus, operating efficiency is improved, reduces running cost.
Description
Technical field
The invention belongs to oil-gas field development field of tool, and in particular to for a kind of sleeve type hydraulic jeting device and including dress
The tubing string put.
Background technology
In the drilling operation of oil field or other drilling wells, perforation is widest completion side in current oilfield exploitation procedure
Formula.After the completion of the drilling well of a bite well, well cementation, it is shot through production string and cement sheath using perforator and penetrates to the depthkeeping of oil reservoir one
Degree, so as to establish the oil gas flow channel of pit shaft and ground interlayer.The quality of perforator directly influences perforation completion effect.
Since last century early sixties, sand jet perforator achieves very big development.It is especially poor in reservoir
In different small homogeneous reservoir, there is good jet fracturing effect using hydraulic ejector.But for reservoir stress difference compared with
Big reservoir, in jet pressure break high stress interval, fracturing fluid easily enters low stress interval or enters laminate layer section.
The content of the invention
For it is above-mentioned the problem of, the present invention propose a kind of sleeve type hydraulic jeting device and the tubing string including device.Dress
Put and avoid in the high stress interval of the larger reservoir of pressure break stress difference, fracturing fluid easily enters low stress interval or entered
The problem of entering laminate layer section, pressure break specific aim can be improved, improve fracturing yield increasing effect.It can realize that one-trip string enters well simultaneously, spray
Sand perforation annular fracturing multistage, improve the scale of conventional multistage hydraulic jetting fracturing.
According to an aspect of the invention, it is proposed that a kind of sleeve type hydraulic jeting device, it includes：
Body, nozzle is set in the side wall of body,
Lower contact,
There is one end to be fixedly connected with body and another for the packing units being arranged between body and lower contact, packing units
The central tube being fixedly connected with lower contact, and the packing element in the centrally disposed pipe outer wall of circulating type are held, in the side wall of central tube
On be provided with intercommunicating pore, and
Slidingtype is arranged on the inner sliding sleeve on the inwall of body,
Wherein, inner sliding sleeve is configured in the opening position that can block nozzle and intercommunicating pore before perforation, and in perforation
It can move and expose nozzle and intercommunicating pore.
Before hydraulic jetting fracturing is carried out, inner sliding sleeve closure nozzle and intercommunicating pore, when carrying out hydraulic fracturing, inner sliding sleeve moves
It is dynamic to expose nozzle and intercommunicating pore.High-pressure fluid is converted into high-speed jet liquid injection sheath and stratum by nozzle, is sprayed
Fracturing work, while under the effect of nozzle chock pressure difference, high-pressure fluid enters the sky that central tube and packing element are formed by intercommunicating pore
Between in, packing element expansion is realized annular space between packing device and pipe sleeve.Thus, isolated location ensures the flowing side of fracturing fluid
To avoiding fracturing fluid from entering low stress interval or enter laminate layer section, improve fracturing yield increasing effect.And inner sliding sleeve seals simultaneously
Stifled nozzle and intercommunicating pore, simplify structure, facilitate operation.
In one embodiment, packing units also include the upper jacket and lower jacket for being arranged on packing element both ends, upper jacket
Upper end circulating type is arranged on the lower end outer wall of body and is fixedly connected with body, and the lower end of upper jacket is provided with circumferential first
Holding tank, the upper end of lower jacket are provided with the second circumferential holding tank, and the lower end circulating type of lower jacket is arranged on the outer of lower contact
On wall.
In a preferred embodiment, packing element includes center section, from center section vertically to the upper of both ends extension
End part and end portion, the diameter of center section is more than the diameter of upper part and end portion, and upper part is with
End part is separately positioned on the first holding tank and neutralized in the second holding tank.By this set, upper jacket and lower jacket serve
The upper part of packing element and the effect of end portion are compressed, when packing element insulates, prevents upper part and the end portion of packing element
Project radially outwardly, so as to avoid the failure during packing element packing, ensure that stability during packing element packing.
Preferably, the axial dimension of upper part and the axial dimension of end portion are identical, and with the axial direction of center section
Size ratio is 1:1~1:3.By this set in expansion process packing element entirety stress equalization, so as to improve packing element
Effect is insulated, adds device resistance to overturning.
In one embodiment, intercommunicating pore is close in the upper end of packing element, and is configured to multiple and equal in the circumference of central tube
Even distribution.By this set, be advantageous to high-pressure fluid from intercommunicating pore enter by packing element and central, tubular into space, and make
Whole packing element circumference stress equalization is obtained, improves the packing effect of the annular space between packing element expansion packing device and sleeve pipe.
In one embodiment, the first connector is extended axially upward out by the upper part of packing element, packing element is first
It is fixedly connected at connector with upper jacket, the second connector is extended axially downward out by the end portion of packing element, packing element is
It is fixedly connected at two connectors with lower jacket.Preferably, the first connector and the second connector are metalwork, and are vulcanized with packing element
Together.It is connected by above-mentioned be provided with beneficial to packing element with upper jacket and lower jacket, during packing element expansion packing, in packing element
Under drive, lower jacket moves up relative to central tube.
In one embodiment, the radially-inwardly prominent positioning for being used to position inner sliding sleeve is set on the inwall of lower contact
Platform.In inner sliding sleeve folding process, positioning table is used to accept inner sliding sleeve and for it axially position.And such a setting structure letter
It is single, it is easy to accomplish.
In one embodiment, the length of inner sliding sleeve be more than nozzle upper side wall and intercommunicating pore lower wall between away from
From.By this set, meet that inner sliding sleeve can block nozzle and intercommunicating pore simultaneously, simplify structure.
According to another aspect of the present invention, there is provided a kind of tubing string, it includes at least one above-mentioned device.
In one embodiment, tubing string includes two or more devices, and is from upstream on the direction in downstream and sets
The internal diameter of the inner sliding sleeve for the device put is sequentially reduced.In connecting tube string, close to the internal diameter of the inner sliding sleeve of the device of wellbore bottom
It is small, pitching injection pressure break is carried out in work progress step by step, realizes one-trip string pressure break multistage.
In the application, term " on " " under " using the real work direction of device as reference.
Compared with prior art, the present invention includes advantages below.By being provided with packing units in the lower section of nozzle, entering
During row hydraulic jetting fracturing, high-pressure fluid can enter the space of packing element and central tube, be radially expanded packing element so as to packing device
Annular space between sleeve pipe.Thus, pressure break specific aim is improved, avoids fracturing fluid from entering low stress interval or enters laminate layer
Section, improves fracturing yield increasing effect.When setting two or more devices on a tubing string, can be carried out in work progress
Pressure break is sprayed step by step, realizes one-trip string pressure break multistage.Thus, operating efficiency is improved, reduces running cost.
Brief description of the drawings
The invention will be described in more detail below based on embodiments and refering to the accompanying drawings.Wherein：
Fig. 1 shows the sleeve type hydraulic jeting device according to the present invention.
Accompanying drawing is not drawn according to the ratio of reality.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
Fig. 1 shows the sleeve type hydraulic jeting device 100 according to the present invention.As shown in figure 1, device 100 includes body
1st, lower contact 10, inner sliding sleeve 3, and the packing units 20 being arranged between body 1 and lower contact 10.Wherein, in the side of body 1
Nozzle 4 is set on wall.Packing units 20 have the packing element 7 on the outer wall of central tube 8 and the centrally disposed pipe 8 of circulating type.Center
One end of pipe 8 is fixedly connected with body 1, and the other end is fixedly connected with lower contact 10.And set in the side wall of central tube 8
It is equipped with intercommunicating pore 81.Before carrying out hydraulic fracturing, the inner sliding sleeve 3 being arranged on the inwall of body 1 blocks nozzle 4 and intercommunicating pore 81.
When carrying out hydraulic fracturing, nozzle 4 and intercommunicating pore 81 are exposed in the movement of inner sliding sleeve 3.It is converted at a high speed by nozzle 4 in high-pressure fluid
Jet liquid injection sheath and stratum, while carrying out injection fracturing work, high-pressure fluid is entered by the He of packing element 7 by intercommunicating pore 81
In the space 82 that central tube 8 is formed, and it is radially expanded packing element 7, so as between packing device 100 and sleeve pipe (not shown)
Annular space.Pressure break specific aim is which thereby enhanced, avoids fracturing fluid from entering low stress interval or enters laminate layer section, improve pressure break
Effect of increasing production.
In one embodiment, packing units 20 also include the upper jacket 6 and lower jacket 9 for being arranged on the both ends of packing element 7.In glue
During the packing of cylinder 7, upper jacket 6 and lower jacket 9 are used to prevent the both ends of packing element 7 from projecting radially outwardly.The upper end of upper jacket 6 and sheet
Body 1 is fixedly connected, such as the upper end circulating type of upper jacket 6 is enclosed on the outer wall of body 1, and is connected through a screw thread and is twisted body 1
Tightly on the inwall of upper jacket 6.The lower end circulating type of lower jacket 9 is arranged on the outer wall of lower contact 10.
In a preferred embodiment, packing element 7 includes center section 72, axially extending from center section 72 to both ends
Upper part 71 and end portion 73.Preferably, in order to easily manufactured, the axle of the axial dimension of upper part 71 and end portion 73
To equal sized, and with the axial dimension of center section 72 with than for 1:1~1:3.And the diameter of center section 72 is more than upper end
Part 71 and the diameter of end portion 73.Correspondingly, the first circumferential holding tank 61 is set on the lower end inner wall of upper jacket 6.
The second circumferential holding tank 91 is set on the upper end inwall of lower jacket 9.Wherein, the upper part 71 of packing element 7 is contained in first
In holding tank 61.And the end portion 73 of packing element 7 is contained in the second holding tank 91.Thus, upper jacket 6 and lower jacket 9 play
The upper part 71 of packing element 7 and the effect of end portion 73 are compressed, prevents the upper part 71 and the footpath of end portion 73 of packing element
To outstanding, so as to avoid the failure during packing element 7 insulates.Also, in fracturing process is sprayed, the centre of packing element 7
The radial outward expansion of part 72, serve the effect of packing annular space.Pass through above-mentioned setting so that 7 overall uniform force of packing element, from
And packing effect is improved, add the job stability of device 100.
It should be noted that the axial dimension of upper part 71 and end portion 73 can also be unequal.
In one embodiment, the upper part 71 of packing element 7 extends axially upward out the first connector 11.By packing element 7
End portion 73 extend axially downward out the second connector 12.Preferably, the first connector 11 and the second connector 12 are equal
For metalwork, and sulfided with packing element 7.So that packing element 7 is fixedly connected at the first connector 11 with upper jacket 6.
Packing element 7 is fixedly connected at the second connector 12 with lower jacket 9.Upper jacket 6, packing element 7 and lower jacket 9 are connected by this connection
It has been connected on together.During the expansion packing of packing element 7, the radial outward expansion of center section 72 of packing element 7, so as to drive lower jacket
9 move up.Also, seal 13 is set between lower jacket 9 and lower contact 10, for realizing between sheath 9 and lower contact 10
Sealing.Meanwhile this seal 13 in lower jacket 9 relative in the motion process of lower contact 10, play sealing function always.
Preferably, intercommunicating pore 81 is close in the upper end of packing element 7, is flowed downward for high-pressure fluid by intercommunicating pore 81, from
And it is that the pressure of packing element 7 is allowed to be radially expanded.It is further preferred that intercommunicating pore 81 is arranged to multiple, and in the circumferential equal of central tube 8
Even distribution (not shown), so that uniform force, the raising expansion of packing element 7 insulate in the circumferential for the center section 72 of packing element 7
The packing effect of annular space between device 100 and sleeve pipe.It is further preferred that intercommunicating pore 81 is configured to rectangle vertically
Hole (not shown), its is simple in construction, easy to process.Be advantageous to highly pressurised liquid simultaneously into the space of packing element 7 and central tube 8
82。
It is provided for positioning the positioning table 19 of inner sliding sleeve 3 on the inwall of lower contact 10.Positioning table 19 is configured to be connect by down
First 10 inwall radially-inwardly protrudes step-like.In the folding process of inner sliding sleeve 3, positioning table 19 is used to accept inner sliding sleeve 3 simultaneously
Axially position for it.Such a setting structure is simple, it is easy to accomplish.
The length of inner sliding sleeve 3 is more than the distance between the upper side wall of nozzle 4 and the lower wall of intercommunicating pore 81, and passes through shearing
Pin 5 is fixed on the inwall of body 1.It is, before perforation, the length of inner sliding sleeve 3 enables its upper end to axially extend to spray
On mouth 4, and its lower end can be axially extended under intercommunicating pore 81, for blocking nozzle 4 and intercommunicating pore 81.
With being provided with external screw thread (not shown) on the lower end outer wall of lower contact 10 on the upper end outer wall of body 1.
Body 1 and lower contact 10 and the connection of other parts are facilitated by this set, and interchangeability is strong, also allows for dismantling.
Ball seat 31 is set on the inwall of inner sliding sleeve 3, for coordinating with ball sealer.Enter well in device 100 to spray to design
Behind position, a ball sealer matched with ball seat 31 is put into, is suppressed, cut shear pin 5, inner sliding sleeve 3 moves down into positioning
At platform 19.In this way, nozzle 4 has been connected inside and outside device 100, high-pressure fluid by nozzle 4 be converted into high-speed jet injection sheath and
Stratum, injection fracturing work is carried out, meanwhile, the intercommunicating pore 81 of the upper end of central tube 8 has connected inner chamber and the central tube 8 of device 100
The space 82 formed with packing element 7, under chock pressure difference effect before and after nozzle 4, the expansion packing annular space of packing element 7.
(not shown) can connect at least one device 100 in one-trip string.If one-trip string connect two or
Two devices 100, the interior latus rectum of the inner sliding sleeve 3 per covering device 100 is different, and the dress that the side for being from upstream to downstream is set up
The internal diameter for putting 100 inner sliding sleeve 3 is sequentially reduced.I.e. in connecting tube string, lean on into the inner sliding sleeve 3 of the device 100 of wellbore bottom
Interior latus rectum is small, and then up the interior latus rectum of inner sliding sleeve 3 increases step by step step by step.Pitching injection pressure break is carried out during construction step by step, is realized
One-trip string pressure break multistage.So as to improve the scale of multi-stage water power injection pressure break.Improve operating efficiency, reduce operation into
This.
Although by reference to preferred embodiment, invention has been described, is not departing from the situation of the scope of the present invention
Under, various improvement can be carried out to it and part therein can be replaced with equivalent.The invention is not limited in Wen Zhonggong
The specific embodiment opened, but all technical schemes including falling within the scope of the appended claims.
Claims (9)
- A kind of 1. sleeve type hydraulic jeting device, it is characterised in that including：Body, nozzle is set in the side wall of the body,Lower contact,There is one end to consolidate with the body for the packing units being arranged between the body and the lower contact, the packing units The central tube that fixed connection and the other end are fixedly connected with the lower contact, and circulating type are arranged in the center pipe outer wall Packing element, intercommunicating pore is provided with the side wall of the central tube, andSlidingtype is arranged on the inner sliding sleeve on the inwall of the body,Wherein, the inner sliding sleeve is configured to be in the opening position that can block the nozzle and intercommunicating pore before perforation, and is penetrating It can be moved during hole and expose the nozzle and intercommunicating pore,The packing units also include being arranged on the upper jacket and lower jacket at the packing element both ends, the top ring of the upper jacket around Formula is arranged on the lower end outer wall of the body and is fixedly connected with the body, and the lower end of the upper jacket is provided with circumferential First holding tank, the upper end of the lower jacket are provided with the second circumferential holding tank, and the lower end circulating type of the lower jacket is set On the outer wall of the lower contact.
- 2. device according to claim 1, it is characterised in that the packing element includes center section, from the center section The upper part and end portion, the diameter of the center section extended vertically to both ends is more than upper part and end portion Diameter, and the upper part and end portion are separately positioned on first holding tank and neutralize second holding tank In.
- 3. device according to claim 2, it is characterised in that the axial dimension of the upper part and the end portion Axial dimension it is identical, and be 1 with the axial dimension ratio of the center section:1~1:3.
- 4. the device according to any one of Claim 1-3, it is characterised in that the intercommunicating pore is close in the packing element Upper end, and be configured to multiple and be uniformly distributed in the circumference of the central tube.
- 5. device according to claim 4, it is characterised in that extended axially upward out by the upper part of the packing element First connector, the packing element are fixedly connected at the first connector with the upper jacket, by the end portion edge of the packing element The second connector is extended axially downward out, the packing element is fixedly connected at the second connector with the lower jacket.
- 6. device according to claim 1, it is characterised in that set on the inwall of the lower contact and radially-inwardly protrude Be used for position the positioning table of the inner sliding sleeve.
- 7. device according to claim 1, it is characterised in that the length of the inner sliding sleeve is more than the upper side wall of the nozzle The distance between lower wall of intercommunicating pore.
- 8. a kind of tubing string, it includes at least one device according to any one of claim 1 to 7.
- 9. tubing string according to claim 8, it is characterised in that including two or more described devices, and from upper The internal diameter for swimming over to the inner sliding sleeve for the described device that the side in downstream is set up is sequentially reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410268164.2A CN105201476B (en) | 2014-06-16 | 2014-06-16 | A kind of sleeve type hydraulic jeting device and the tubing string including device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410268164.2A CN105201476B (en) | 2014-06-16 | 2014-06-16 | A kind of sleeve type hydraulic jeting device and the tubing string including device |
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| CN105201476A CN105201476A (en) | 2015-12-30 |
| CN105201476B true CN105201476B (en) | 2018-03-02 |
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| CN201410268164.2A Active CN105201476B (en) | 2014-06-16 | 2014-06-16 | A kind of sleeve type hydraulic jeting device and the tubing string including device |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR112018014646B1 (en) | 2016-01-20 | 2022-10-25 | China Petroleum & Chemical Corporation | TOOL FOR DRILLING, OBSTRUCTION AND FRACTURING AND PRODUCTION COLUMN INCLUDING THE TOOL |
| CN110700801B (en) | 2019-11-08 | 2020-05-12 | 西南石油大学 | Automatic jet flow crushing tool for solid fluidization exploitation of natural gas hydrate |
| CN114876370B (en) * | 2022-06-01 | 2023-03-28 | 中国石油大学(北京) | Multi-point directional jet drilling tool and method of use thereof |
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