CN205977153U - Venturi bailer - Google Patents
Venturi bailer Download PDFInfo
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- CN205977153U CN205977153U CN201621045952.6U CN201621045952U CN205977153U CN 205977153 U CN205977153 U CN 205977153U CN 201621045952 U CN201621045952 U CN 201621045952U CN 205977153 U CN205977153 U CN 205977153U
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- bailers
- sand
- venturi
- bailer
- hole
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Abstract
The utility model belongs to the technical field of oil drilling, oil recovery, concretely relates to can be used for missing the venturi bailer of the sand work of dragging for of serious well for one kind. The utility model provides a venturi bailer, include: have the bailer body of jet orifice, the internal orifice of jet orifice is higher than its collar extension, arrange in proper order at this internal nozzle of bailer and connect the sand subassembly along the top -down orientation that the nozzle impels the fluid to follow the internal orifice of jet orifice is gone into and the collar extension play of follow jet orifice to the grit that will be located the below of bailer body is sent into and is kept connecing the sand subassembly, and the junk mill of setting on the bottom of bailer body for the breakage is about to get into this internal grit of bailer. Using the venturi effect, forming the negative pressure in the bailer, the spun fluid carries out the sand washing to the wall of a well, sets up the junk mill, can be when dragging for sand, let large granule stratum rock breaking, and be favorable to the bailer to suck bailers this is internal bottom sand is whole, it is thorough to guarantee to drag for sand.
Description
Technical field
This utility model belongs to oil drilling, oil recovery technique field and in particular to a kind of can be used in missing serious well
Drag for the venturi bailers of sand work.
Background technology
The formation collapse of ORDOVICIAN CARBONATE ROCK IN TAHE OILFIELD falls that block is larger, and its special casing programme, conventional sand washing
Operation process occurs that major diameter granule returns out the problem of difficulty.Produce accumulative Liquid output height plus the part well later stage and cause stratum
, after lost-circulation zone is opened in sand washing, leakage seriously in deficit, the phenomenon that well head mistake is returned, and the sand that early stage is gone out may be suddenly
Settle and there is the risk that sand bit freezing has.Therefore it is directed to the sand removal work of stratum absorption well seriously in debt, need to use and drag for sand
Cylinder is carrying out dragging for sand.
However, being designed as the cylinder of a zigzag or taper, inserting sand face more the bottom in existing bailers contact sand face
Hereinafter, if the type bailers is using in system in Tahe Oilfield or earth formation identical oil field, because its collapsing and breaking is larger
Feature, the big formation rock of granule just cannot be inhaled in bailers it is easy to the situation dragging for sand failure.
Utility model content
Based on the problems referred to above, the purpose of this utility model is to provide a kind of venturi bailers, can be larger in sand lump
In the case of still ensure drag for sand success.
This utility model provides a kind of venturi bailers, including：
There is the bailers body of spray-hole, the internal orifice of described spray-hole is higher than its collar extension；
It is sequentially arranged in the intrinsic nozzle of described bailers along direction from top to bottom and connects sand assembly, described nozzle promotees
Make that fluid enters from the internal orifice of described spray-hole and the collar extension from described spray-hole goes out, by the lower section positioned at described bailers body
Sandstone send into and connect in sand assembly described in being maintained at.
It is arranged on the junk mill on the bottom of described bailers body, will to enter described bailers intrinsic for broken
Sandstone.
Further, the diameter of the water inlet of described junk mill is 30mm.
Further, also include mozzle, the upper end of described mozzle is socketed in described bailers originally in vitro, and its lower end
Together define flow-guiding mouth with bailers body, flow-guiding mouth is connected with described spray-hole and the collar extension less than described spray-hole.
Further, the lower end of described mozzle is provided with inner conical surface.
Further, also include tubular configured joint, described tubular configured joint is connected with the upper end of described bailers body, described lead
Flow tube is removably socketed in bailers by described tubular configured joint, and this is external.
Further, the connection between described tubular configured joint and bailers body is to threaded, described mozzle and pipe
Connection between straight coupling is threaded.
Further, described bailers body is also included located at the check valve connecing between sand assembly and junk mill.
Further, described sand grid, inner tube and the middle empty pallet that sand assembly includes arranging from top to bottom, said inner tube are connect
It is connected with middle empty pallet so that the inner chamber of said inner tube is connected with the mesopore of middle empty pallet.
Further, described connect the conical flow guiding cover that sand assembly also includes the upper end located at said inner tube, in conical flow guiding
Cover is provided with the outlet with the intracavity inter-connection of said inner tube.
Further, the quantity of described nozzle is two or more.
A kind of venturi bailers that this utility model embodiment provides, sets at the lower end in contact sand face of bailers body
Put junk mill, this junk mill can crush and will enter the intrinsic sandstone of described bailers that is to say, that the big formation rock of granule
Stone also will be crushed by this junk mill, thus being conducive to this venturi bailers that bottom sand (comprising the big formation rock of granule) is a large amount of
Or this is internal to be all drawn into bailers, and take it out oil well.
In addition, the high-velocity fluid that the nozzle of the venturi bailers of this utility model embodiment offer is sprayed, can not only
Enough producing Venturi effect, so that forming negative pressure in casing section mill, but also sand washing can be carried out it is ensured that venturi drags for sand to the borehole wall
Cylinder can thoroughly drag for sand.The structure of this utility model is simple, and is not limited by well size, manufactures and maintenance cost is all relatively low.
Brief description
In order to be illustrated more clearly that this utility model specific embodiment or technical scheme of the prior art, below will be right
In specific embodiment or description of the prior art, the accompanying drawing of required use is briefly described.In all of the figs, similar
Element or partly typically identified by similar reference.In accompanying drawing, each element or part might not be according to actual ratios
Draw.
Fig. 1 shows the structural representation of the venturi bailers according to this utility model embodiment one.
Description of reference numerals：1st, bailers body；2nd, junk mill；3rd, spray-hole；31st, internal orifice；32nd, collar extension；4th, nozzle；5th, connect
Sand assembly；51st, sand grid；52nd, inner tube；53rd, middle empty pallet；531st, mesopore；54th, conical flow guiding cover；6th, mozzle；61st, inner cone
Face；7th, tubular configured joint；8th, check valve；9th, flow-guiding mouth.
Specific embodiment
Below in conjunction with accompanying drawing, the embodiment of technical solutions of the utility model is described in detail.Following examples are only
For the technical solution of the utility model is clearly described, therefore it is only used as example, and this practicality can not be limited with this
New protection domain.
Fig. 1 shows venturi bailers of the present utility model.As shown in figure 1, this venturi bailers is included with spray
The bailers body 1 of perforation 3.The internal orifice 31 of spray-hole 3 be higher than its collar extension 32 so that the centrage of spray-hole 3 and bailers this
The radial direction of body 1 is not parallel.This venturi bailers also includes being sequentially arranged in bailers body 1 along direction from top to bottom
Nozzle 4 and connect sand assembly 5.Wherein, nozzle 4 can reactive fluid enter and the collar extension 32 from spray-hole 3 from the internal orifice 31 of spray-hole 3
Go out, the sandstone of the lower section positioned at bailers body 1 is sucked and is maintained at connect in sand assembly 5.The quantity of nozzle (4) was both permissible
It is one or multiple, preferably two or more.
This venturi bailers also includes the junk mill 2 being arranged on the bottom of bailers body 1, and it is used for crushing to enter
Enter the sandstone in bailers body 1.The diameter of the water inlet of junk mill 2 is chosen as more than 30mm.Nozzle 4 spray fluid can be
The gas such as liquid or nitrogen, natural gas.Principle according to Venturi effect：Can produce near swiftly flowing fluid
Low pressure, thus produce adsorption.When nozzle 4 high velocity jet goes out fluid, the air pressure near nozzle 4 reduces, thus in bailers
Body 1 inner chamber forms negative pressure, and sand is drawn into the connecing in sand assembly 5 of bailers body 1.While dragging for sand, junk mill 2 will drag for
Oarse-grained formation rock below sand cylinder crushes, thus ensureing the bottom sand of particle diameter larger (i.e. sand grains footpath is about 10-30mm)
Also connecing in sand assembly 5 of bailers body 1 can be all inhaled into.Thus such has bulky grain ground to avoid system in Tahe Oilfield etc.
In the oil well of layer rock, bulky grain sand cannot be picked up the problem pulled out.
In the present embodiment, above-mentioned connect sand grid 51, inner tube 52 and the middle empty pallet that sand assembly 5 includes arranging from top to bottom
53, inner tube 52 is connected with middle empty pallet 53 so that the inner chamber of inner tube 52 is connected with the mesopore 531 of middle empty pallet 53.It is inhaled into
Sand enter inner tube 52 via the mesopore 531 of middle empty pallet 53 first, then entered the inner chamber of bailers by inner tube 52, drop and stockpile
On middle empty pallet 53.Sand grid 51 blocks the sand out from inner tube 52, can stop that sand is sucked further up, thus keeping away
Nozzle 4 or the blocking of spray-hole 3 are exempted from.Preferably, connect sand assembly 5 and also include the conical flow guiding cover located at the upper end of inner tube 52
54, the outlet with the intracavity inter-connection of inner tube 52 is provided with conical flow guiding cover 54.The design of conical flow guiding cover 54 can reduce
The sand being sucked out from inner tube 52 falls from inner tube 52 after being stopped by sand grid 51 again, therefore improves work of the present utility model
Make efficiency.
In addition, bailers body 1 is also included located at the check valve 8 connecing between sand assembly 5 and junk mill 2.8, this check valve is permitted
Permitted sand to pass through from the bottom to top, so the sand sucking in bailers will not drop out, thus improve the efficiency dragging for sand.
This utility model also includes mozzle 6, and the upper end of mozzle 6 is socketed in outside bailers body 1, and its lower end with drag for
Sand cylinder body 1 together defines flow-guiding mouth 9, and flow-guiding mouth 9 is connected with spray-hole 3 and the collar extension 32 less than spray-hole 3.This practicality is new
While dragging for sand, the fluid of ejection also can carry out sand washing to type to the borehole wall, and mozzle 6 limits the high-velocity fluid of nozzle 4 ejection
Direction it is easy to protection the borehole wall, prevent high-velocity fluid from directly washing away the borehole wall, thus reducing the risk of cave-in.Mozzle 6
Lower end is provided with inner conical surface 61, and that is, the axial length of the lower end of mozzle 6 radially increases, and further convection cell serves
Guide functions, cause the risk of cave-in thus reducing further and washing away the process of the borehole wall.
This utility model also includes tubular configured joint 7, and tubular configured joint 7 is connected with the upper end of bailers body 1, above-mentioned mozzle
6 are removably socketed in outside bailers body 1 by tubular configured joint 7.Tubular configured joint 7 is three phase connection, and that is, it can will drag for sand
Cylinder body 1, mozzle 6 and drilling rod link together, and acting on is that whole venturi bailers is connected on the drilling rod of drilling tool,
It is connected to mozzle 6 simultaneously, realize recycling of fluid.
Connection between above described tubular joint 7 and bailers body 1 is to threaded, between mozzle 6 and tubular configured joint 7
Connection be threaded.Ensure between bailers all parts, to connect reliable, easy installation and removal, be convenient for the dimension of part
Repair and change.
In the description of the present application it is to be understood that term " on ", the orientation of instruction such as D score or position relationship be base
In orientation shown in the drawings or position relationship, be for only for ease of description this utility model and simplify description, rather than instruction or
The hint device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that
To restriction of the present utility model.
Finally it should be noted that：Various embodiments above is only in order to illustrating the technical solution of the utility model, rather than it is limited
System；Although being described in detail to this utility model with reference to foregoing embodiments, those of ordinary skill in the art should
Understand：It still can be modified to the technical scheme described in foregoing embodiments, or to wherein some or all of
Technical characteristic carries out equivalent；And these modifications or replacement, do not make the essence of appropriate technical solution depart from this practicality new
The scope of type each embodiment technical scheme, it all should be covered in the middle of the scope of claim of the present utility model and description.
Claims (10)
1. a kind of venturi bailers is it is characterised in that include：
There is the bailers body (1) of spray-hole (3), the internal orifice (31) of described spray-hole (3) is higher than its collar extension (32)；
The nozzle (4) that is sequentially arranged in described bailers body (1) along direction from top to bottom and connect sand assembly (5), described
Nozzle (4) promotes fluid to enter from the internal orifice (31) of described spray-hole (3) and go out from the collar extension (32) of described spray-hole (3), will
Connect in sand assembly (5) described in sending into positioned at the sandstone of the lower section of described bailers body (1) and being maintained at；
It is arranged on the junk mill (2) on the bottom of described bailers body (1), described bailers body will be entered for broken
(1) sandstone in.
2. venturi bailers according to claim 1 is it is characterised in that the diameter of the water inlet of described junk mill (2) is
30mm.
3. venturi bailers according to claim 1 and 2 is it is characterised in that also include mozzle (6), described water conservancy diversion
The upper end of pipe (6) is socketed in described bailers body (1) outward, and its lower end and bailers body (1) together define flow-guiding mouth
(9), described flow-guiding mouth (9) is connected with described spray-hole (3) and the collar extension (32) less than described spray-hole (3).
4. venturi bailers according to claim 3 is it is characterised in that be provided with the lower end of described mozzle (6)
Inner conical surface.
5. it is characterised in that also including tubular configured joint (7), described tubulose connects venturi bailers according to claim 3
Head (7) is connected with the upper end of described bailers body (1), and described mozzle (6) is removably covered by described tubular configured joint (7)
It is connected on bailers body (1) outward.
6. venturi bailers according to claim 5 is it is characterised in that described tubular configured joint (7) and bailers body
(1) connection between is threaded, and described mozzle (6) is to threaded with the connection between tubular configured joint (7).
7. venturi bailers according to claim 1 is it is characterised in that described bailers body also includes located at connecing sand
Check valve (8) between assembly (5) and junk mill (2).
8. venturi bailers according to claim 1 is it is characterised in that the described sand assembly (5) that connects is included from top to bottom
The sand grid (51) of arrangement, inner tube (52) and middle empty pallet (53), said inner tube (52) is connected with middle empty pallet (53) so that institute
The mesopore (531) of the inner chamber and middle empty pallet (53) of stating inner tube (52) is connected.
9. venturi bailers according to claim 8 is it is characterised in that the described sand assembly (5) that connects also is included located at institute
State the conical flow guiding cover (54) of the upper end of inner tube (52), the inner chamber phase with said inner tube (52) is provided with conical flow guiding cover (54)
The outlet of connection.
10. venturi bailers according to claim 1 it is characterised in that described nozzle (4) quantity be two with
On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621045952.6U CN205977153U (en) | 2016-09-09 | 2016-09-09 | Venturi bailer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621045952.6U CN205977153U (en) | 2016-09-09 | 2016-09-09 | Venturi bailer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205977153U true CN205977153U (en) | 2017-02-22 |
Family
ID=58040116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621045952.6U Active CN205977153U (en) | 2016-09-09 | 2016-09-09 | Venturi bailer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205977153U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106869796A (en) * | 2017-04-21 | 2017-06-20 | 西南石油大学 | A kind of downhole hardware of machinery and jet flow negative pressure dual drive |
| CN109630053A (en) * | 2018-12-26 | 2019-04-16 | 四川圣诺油气工程技术服务有限公司 | A kind of novel shaft negative pressure is salvaged and cleaning tool |
| CN109653692A (en) * | 2017-10-11 | 2019-04-19 | 中国石油天然气股份有限公司 | A kind of gas scouring sluice for the natural gas well |
-
2016
- 2016-09-09 CN CN201621045952.6U patent/CN205977153U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106869796A (en) * | 2017-04-21 | 2017-06-20 | 西南石油大学 | A kind of downhole hardware of machinery and jet flow negative pressure dual drive |
| CN109653692A (en) * | 2017-10-11 | 2019-04-19 | 中国石油天然气股份有限公司 | A kind of gas scouring sluice for the natural gas well |
| CN109653692B (en) * | 2017-10-11 | 2021-04-30 | 中国石油天然气股份有限公司 | Gas sand flushing valve for natural gas well |
| CN109630053A (en) * | 2018-12-26 | 2019-04-16 | 四川圣诺油气工程技术服务有限公司 | A kind of novel shaft negative pressure is salvaged and cleaning tool |
| CN109630053B (en) * | 2018-12-26 | 2021-03-23 | 四川圣诺油气工程技术服务有限公司 | Novel well bore negative pressure is salvaged and clearance instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |