CN207453907U - The closed continuous sand flushing control device of well head - Google Patents
The closed continuous sand flushing control device of well head Download PDFInfo
- Publication number
- CN207453907U CN207453907U CN201721246824.2U CN201721246824U CN207453907U CN 207453907 U CN207453907 U CN 207453907U CN 201721246824 U CN201721246824 U CN 201721246824U CN 207453907 U CN207453907 U CN 207453907U
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- Prior art keywords
- central tube
- outer sleeve
- sand washing
- sand
- tube outer
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Abstract
The utility model discloses a kind of closed continuous sand flushing control device of well head, mainly including box cupling, top connection, central tube outer sleeve, pressure cap, sand washing central tube, outer housing, upper cartridge, be slidingly sealed the components such as set, oil connection, lower cartridge, bottom flange, lower contact.With reference to aiding in mating oil pipe or casing, it can be achieved that not termination of pumping continuous sand flushing operation in sand washing operation, can improve sand washing operation efficiency, avoid secondary pollution.
Description
Technical field
The sand flushing tool that the utility model is related to be used in a kind of Sand-washing in Oilfield operation process, particularly a kind of well head are closed
Continuous sand flushing control device.
Background technology
As oil-gas field development enters the middle and later periods, the increasing yield and injection measure used to meet upper production needs causes ground
The bond of layer cement is deteriorated, and causes shaking out for some stratum very serious, triggers the underproduction or halt production, it is necessary to carry out at sand washing
Reason.In previous sand washing operation, direct-connected on oil pipe or four-way, positive sand washing or recoil sand will be often pumped.The deficiency of this method
It is, often during the depth of piece oil pipe of punching, termination of pumping is needed to make up a joint, if stratum is seriously in debt, anti-row leads low and can not protect
Normal circulation is demonstrate,proved, the sand rushed is easily caused and settles and bit freezing.The particularly well of slim-hole and special hole condition, it is easier to cause underground
Accident.Meanwhile previous sand washing process be easy to cause environmental pollution due to not being sealing and circulating.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of closed continuous sand flushing control device of well head, can be with
It can smoothly make up a joint not in the case of termination of pumping, the linerless tube anti-pollution so as to fulfill the continuous closed sand washing in shaft bottom is continuous
Sand flushing device.
In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is：A kind of closed continuous sand flushing of well head
Control device, including outer housing, central tube outer sleeve, sand washing central tube, oil connection, central tube outer sleeve is opened for middle part side
There is a up-thin-low-thick steel pipe of recirculation hole, turning has corresponding female thread respectively on the inner wall at central tube outer sleeve both ends, is used for
Connect the top connection on top and the lower contact of lower part, top connection upper end connection coupling；Sand washing central tube is mounted on central tube housing
In cylinder and pass through screw thread and lower contact and be connected as an entirety, the spear structure that sand washing central tube is closed for top, bottom is opened,
Overcurrent centre bore is provided on side wall, sets gradually the upper limit for being useful for the movement of limit slippage sealing shroud on outer wall from top to bottom
Position ring and lower limit ring, the limit base for fixing seal leather cup are slidingly sealed set and are located at central tube outer sleeve and sand washing center
Between pipe, move up and down with the variation of annular fluid pressure between central tube outer sleeve and sand washing central tube, sealing cup is located at
Between central tube outer sleeve and sand washing central tube, open and be adjacent in central tube outer sleeve inner wall under the action of Fluid pressure
On, it realizes sealing, crosses recirculation hole between lower limit ring and limit base, overcurrent centre bore is located at upper limit ring and lower limit ring
Between；Outer housing is cased in the outside of central tube outer sleeve, pressure cap is bolted at the top of outer housing, bottom is bolted with bottom flange,
In middle part of sliding channel set installation oil connection with the corresponding mounting hole of overcurrent lead to the hole site；Upper cartridge be located at pressure cap,
Between outer housing and central tube outer sleeve, be laterally provided with mounting hole, cross the corresponding flowing hole of recirculation hole, oil connection is successively
Through mounting hole, flowing hole, communicated by crossing recirculation hole with ring cavity between central tube outer sleeve and sand washing central tube, in shell
Lower cartridge between body, bottom flange and central tube outer sleeve is set, guarantor is marked between upper cartridge and lower cartridge
The solid-state stop-leak compound of closed operation during card sand washing.
Intersection between thickness two parts construction of the central tube outer sleeve carries the transition shoulder of chamfering.
The overcurrent centre bore amounts to four, mutual distribution in 90 °.
Flowing hole in the upper cartridge for steel structure and is connected as one with upper cartridge through vulcanizing treatment
It is whole.
The beneficial effects of the utility model are：The function that not termination of pumping continuously cycles sand washing operation can be achieved, and effectively
The generation of underground second accident is reduced, reduces the risk of construction, improves sand washing efficiency, saves the cost of operation, meanwhile, it should
Device is simple and practical, is easily installed storage.
Description of the drawings
Fig. 1 is the structure diagram of the closed continuous sand flushing control device of the utility model well head.
Fig. 2 is the utility model sand clean out pipe and its accessory structure schematic diagram.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and detailed description：
As shown in Figure 1, 2, the closed continuous sand flushing control device of the well head of the utility model, including outer housing 6, central tube outside
Sleeve 3, sand washing central tube 5, oil connection 9, central tube outer sleeve 3 were provided with the up-thin-low-thick of recirculation hole 13 for middle part side
Steel pipe, turning has corresponding female thread respectively on the inner wall at 3 both ends of central tube outer sleeve, for connect the top connection 2 on top and under
The lower contact 12 in portion, 2 upper end connection coupling 1 of top connection；Sand washing central tube 5 is mounted in central tube outer sleeve 3 and passes through screw thread
An entirety is connected as with lower contact 12, the spear structure that sand washing central tube 5 is closed for top, bottom is opened is set on side wall
Overcurrent centre bore 14 is equipped with, sets gradually the upper limit ring 15 for being useful for the movement of limit slippage sealing shroud 8 on outer wall from top to bottom
With lower limit ring 16, for the limit base 17 of fixing seal leather cup 18, be slidingly sealed set 8 and be located at central tube outer sleeve 3 and sand washing
Between central tube 5, move up and down with the variation of annular fluid pressure between central tube outer sleeve 3 and sand washing central tube 5, seal skin
Bowl 18 is opened under the action of Fluid pressure and is adjacent to outside central tube between central tube outer sleeve 3 and sand washing central tube 5
On 3 inner wall of sleeve, sealing is realized, cross recirculation hole 13 between lower limit ring 16 and limit base 17, overcurrent centre bore 14 is located at
Between upper limit ring 15 and lower limit ring 16；Outer housing 6 is cased in the outside of central tube outer sleeve 3, the top of outer housing 6 is spirally connected
There is pressure cap 4, bottom is bolted with bottom flange 11, and the opposite with crossing 13 position of recirculation hole of installation oil connection 9 is set in middle part of sliding channel
The mounting hole 21 answered；Upper cartridge 7 is located between pressure cap 4, outer housing 6 and central tube outer sleeve 3, is laterally provided with and mounting hole
21st, 13 corresponding flowing hole 19 of recirculation hole is crossed, oil connection 9 sequentially passes through mounting hole 21, flowing hole 19, by crossing recirculation hole
Ring cavity communicates between 13 and central tube outer sleeve 3 and sand washing central tube 5, in outer housing 6, bottom flange 11 and central tube outer sleeve 3
Between be lower cartridge 10, be marked between upper cartridge 7 and lower cartridge 10 ensure sand washing during closed operation
Solid-state stop-leak compound 20.
It is preferred that the intersection between thickness two parts construction of the central tube outer sleeve 3 carries the transition shoulder of chamfering.
The overcurrent centre bore 14 amounts to four, mutual distribution in 90 °.The flowing hole 19 passes through for steel structure and with upper cartridge 7
Vulcanizing treatment is connected as an entirety.
Set 8 is slidingly sealed between central tube outer sleeve 3 and sand washing central tube 5, it can be with central tube outer sleeve 3 and sand washing
The variation of annular fluid pressure moves up and down between central tube 5, to meet the needs of different sand washing operations；Sealing cup 18 is similary
Between central tube outer sleeve 3 and sand washing central tube 5, when the sand cleaning fluid entered through oil connection 9 enters central tube outer sleeve 3
Between sand washing central tube 5 during annular space, which opens under the action of Fluid pressure and is adjacent in central tube outer sleeve 3
, it can be achieved that sealing to the annular fluid on inner wall.
The utility model is realized in this way：
First, sealing cup 18 is vulcanized using vulcanizing treatment and an entirety is made on limit base 17, after will be sliding
Movable sealing sleeve 8 is installed between upper limit ring 15 and lower limit ring 16, completes the assembling of each accessory on sand washing central tube 5；Secondly,
Sand washing central tube 5 is inserted into central tube outer sleeve 3, and by respective bottom screw thread by sand washing central tube 5, central tube housing
Cylinder 3 and lower contact 12 are connected as an entirety, after on the top of central tube outer sleeve 3 be sequentially connected top connection 2 and box cupling 1,
Complete the assembling of whole device bosom component；Again, cartridge 10 and outer housing 6 is screwed under being placed on bottom flange 11,
It is assembled foregoing in the component lower contact insertion of whole device the bosom lower cartridge 10 and bottom flange 11 finished, and it is close under
The solid-state stop-leak compound 20 of appropriate height is injected between sealing cylinder 10, outer housing 6 and central tube outer sleeve 3；It is solid in outer housing 6 afterwards
Cartridge 7 is put on state stop-leak compound 20, and passes through the screw thread of oil connection 9 by oil connection 9, outer housing 6 and overcurrent
Hole 19 is connected as an entirety；Finally, the upper end of pressure cap 4 through box cupling 1, top connection 2 and central tube outer sleeve 3 is screwed in shell
On body 6, it is allowed to compress cartridge 7, that is, completes the assembling of entire closed continuous sand flushing control device.
Before onsite application, first, according to Fig. 1, the assembling of entire closed continuous sand flushing control device is completed；Then, use
Sand-flushing pipe column oil pipe or drilling rod are transferred through conventional well head big four, when sand-flushing pipe column sand face close in well, incite somebody to action this using bolt
Closed continuous sand flushing control device is connected to through bottom flange 11 on well head big four, will be under this closed continuous sand flushing control device
Connector 12 is connected with sand-flushing pipe column in well, completes sand-flushing pipe column connection in well；After again, the external triplet commutation on pump truck manifold
Valve, the external three-way diverter valve are connected respectively at two sand washing pipelines, wherein a sand washing pipeline is through high-pressure fire hose and box cupling 1
It is connected, another sand washing pipeline is connected with oil connection 9, completes the connection of well head sand washing flow.
During sand washing operation, the high pressure sand cleaning fluid body exported by pump truck enters center through sand washing pipeline, high-pressure fire hose first
Annular space between pipe outer sleeve 3 and sand washing central tube 5, promotion are slidingly sealed 8 downlinks of set and expose overcurrent centre bore 14, slide at this time
Movable sealing sleeve 8 is stopped by lower limit ring 16 and seals lower part annulus access, and sand cleaning fluid enters sand washing central tube by flow center hole 14
Inner cavity carries out normal sand washing operation；When needing the new sand-flushing pipe column of tripping in, without stopping pump truck, it only need to change external threeway and change
To valve direction, enter cross recirculation hole 13 of the sand cleaning fluid through oil connection 9, upper cartridge flowing hole 19 and central tube outer sleeve
Annular space between central tube outer sleeve 3 and sand washing central tube 5, promotion is slidingly sealed 8 uplinks of set, and exposes overcurrent centre bore 14,
It is slidingly sealed set 8 at this time by upper limit ring 15 to be stopped and seal upper annulus passage, sand cleaning fluid enters sand washing by flow center hole 14
Center tube cavity carries out not termination of pumping continuous sand flushing operation；After the completion of tubing string connection, change external three-way diverter valve direction again,
The ring that high pressure sand cleaning fluid body is made to enter first through sand washing pipeline, high-pressure fire hose between central tube outer sleeve 3 and sand washing central tube 5
Sky, and by flow center hole 14 normal sand washing operation is carried out into sand washing center tube cavity.It is both needed to per piece sand-flushing pipe column of tripping in
Box cupling 1, top connection 2, central tube outer sleeve 3, sand washing central tube 5 and its accessory, lower contact are connected above tubing string in advance
12 is a set of, and how much connection depends on sand washing depth, constantly repeats the above process, you can realize closed continuous sand flushing.
In conclusion the content of the utility model is not limited in the above embodiments, in same area it is insighted it
Scholar can easily propose other embodiments within the technological guidance's thought of the utility model, but this embodiment is all wrapped
It includes within the scope of the utility model.
Claims (4)
1. a kind of closed continuous sand flushing control device of well head, which is characterized in that including outer housing (6), central tube outer sleeve (3),
Sand washing central tube (5), oil connection (9), central tube outer sleeve (3) were provided with the up-thin-low-thick of recirculation hole (13) for middle part side
Steel pipe, turning has corresponding female thread respectively on the inner wall at central tube outer sleeve (3) both ends, for connecting the top connection on top
(2) and the lower contact of lower part (12), top connection (2) upper end connection coupling (1)；Sand washing central tube (5) is mounted on central tube housing
In cylinder (3) and pass through screw thread and lower contact (12) and be connected as an entirety, sand washing central tube (5) is closed for top, bottom is opened
Spear structure, overcurrent centre bore (14) is provided on side wall, is set gradually from top to bottom on outer wall and is useful for limit slippage
The mobile upper limit ring (15) of sealing shroud (8) and lower limit ring (16), the limit base (17) for fixing seal leather cup (18) are sliding
Movable sealing sleeve (8) is located between central tube outer sleeve (3) and sand washing central tube (5), with central tube outer sleeve (3) and sand washing center
The variation of annular fluid pressure moves up and down between pipe (5), and sealing cup (18) is located at central tube outer sleeve (3) and sand washing center
It between managing (5), opens and is adjacent on central tube outer sleeve (3) inner wall under the action of Fluid pressure, realize sealing, cross and circulate
Hole (13) is located between lower limit ring (16) and limit base (17), and overcurrent centre bore (14) is located at upper limit ring (15) and lower limit
Between ring (16)；Outer housing (6) is cased in the outside of central tube outer sleeve (3), pressure cap (4) is bolted at the top of outer housing (6),
Bottom is bolted with bottom flange (11), and the corresponding with crossing recirculation hole (13) position of installation oil connection (9) is set in middle part of sliding channel
Mounting hole (21)；Upper cartridge (7) is located between pressure cap (4), outer housing (6) and central tube outer sleeve (3), is laterally provided with
Mounting hole (21), mistake are sequentially passed through with mounting hole (21), excessively recirculation hole (13) corresponding flowing hole (19), oil connection (9)
Discharge orifice (19) is communicated by crossing recirculation hole (13) with ring cavity between central tube outer sleeve (3) and sand washing central tube (5), in shell
Lower cartridge (10) is set between body (6), bottom flange (11) and central tube outer sleeve (3), upper cartridge (7) and under it is close
Be marked between sealing cylinder (10) ensure sand washing during closed operation solid-state stop-leak compound (20).
2. the closed continuous sand flushing control device of well head according to claim 1, which is characterized in that the central tube outer sleeve
(3) the intersection between thickness two parts construction carries the transition shoulder of chamfering.
3. the closed continuous sand flushing control device of well head according to claim 1, which is characterized in that the overcurrent centre bore (14)
Four altogether, mutual distribution in 90 °.
4. the closed continuous sand flushing control device of well head according to claim 1, which is characterized in that the upper cartridge (7)
On flowing hole (19) steel structure and to be connected as an entirety through vulcanizing treatment with upper cartridge (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721246824.2U CN207453907U (en) | 2017-09-26 | 2017-09-26 | The closed continuous sand flushing control device of well head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721246824.2U CN207453907U (en) | 2017-09-26 | 2017-09-26 | The closed continuous sand flushing control device of well head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207453907U true CN207453907U (en) | 2018-06-05 |
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ID=62284313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721246824.2U Expired - Fee Related CN207453907U (en) | 2017-09-26 | 2017-09-26 | The closed continuous sand flushing control device of well head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207453907U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108798564A (en) * | 2018-06-06 | 2018-11-13 | 东北石油大学 | Continuous sand flushing device for underground work construction process |
| CN109184620A (en) * | 2018-09-29 | 2019-01-11 | 大庆市晟威机械制造有限公司 | Oil pipe continuous sand flushing system |
| CN109577888A (en) * | 2019-01-28 | 2019-04-05 | 陕西延长石油(集团)有限责任公司研究院 | Oil pipe continuous injecting, method for implanting and a kind of not termination of pumping are changed oil pipe method |
-
2017
- 2017-09-26 CN CN201721246824.2U patent/CN207453907U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108798564A (en) * | 2018-06-06 | 2018-11-13 | 东北石油大学 | Continuous sand flushing device for underground work construction process |
| CN108798564B (en) * | 2018-06-06 | 2019-04-05 | 东北石油大学 | Continuous sand flushing device for underground work construction process |
| CN109184620A (en) * | 2018-09-29 | 2019-01-11 | 大庆市晟威机械制造有限公司 | Oil pipe continuous sand flushing system |
| CN109184620B (en) * | 2018-09-29 | 2020-06-23 | 大庆市晟威机械制造有限公司 | Oil pipe continuous sand washing system |
| CN109577888A (en) * | 2019-01-28 | 2019-04-05 | 陕西延长石油(集团)有限责任公司研究院 | Oil pipe continuous injecting, method for implanting and a kind of not termination of pumping are changed oil pipe method |
| CN109577888B (en) * | 2019-01-28 | 2021-05-14 | 陕西延长石油(集团)有限责任公司研究院 | Oil pipe continuous injection device, injection method and method for changing oil pipe without stopping pump |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| 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: 20180605 Termination date: 20210926 |