CN208137872U - A kind of jet stream de-plugging tubing string - Google Patents
A kind of jet stream de-plugging tubing string Download PDFInfo
- Publication number
- CN208137872U CN208137872U CN201820488529.6U CN201820488529U CN208137872U CN 208137872 U CN208137872 U CN 208137872U CN 201820488529 U CN201820488529 U CN 201820488529U CN 208137872 U CN208137872 U CN 208137872U
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- outer tube
- jet stream
- tube
- tubing string
- protection cylinder
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Abstract
The utility model is a kind of jet stream de-plugging tubing string, can in the case where not dragging tubing string in casing sand control screen or well-case perforating pipeline section carry out jet stream de-plugging.This tubing string includes jet stream outer tube, the tube body of jet stream outer tube is equipped with outer tube jet hole, inner tube is housed, the bottom of oil pipe string is threadedly coupled by cup packer with the top of jet stream outer tube and inner tube, and the lower part of jet stream outer tube and inner tube is connect by bottom fitting with sand-removing unblocking tool in jet stream outer tube；The quantity of sand control screen being arranged in the number of segment and well inner sleeve of the pipeline section of outer tube jet hole is set in jet stream outer tube and the number of segment of well-case perforating pipeline section is consistent.Supporting tool intensity in this tubing string is high, is hardly damaged, reusable.Simultaneously easy construction, de-plugging ability is strong, can effectively shorten the activity duration, improve working efficiency, significantly reduce operating cost, have significant using effect.
Description
Technical field
The utility model belongs to the deblocking tool of petroleum industry producing well, especially a kind of jet stream de-plugging tubing string, can be not
Drag tubing string in the case where in casing sand control screen or well-case perforating pipeline section carry out jet stream de-plugging.
Background technique
In oil mining production process, shaking out, shale expansion or oil it is thick etc. due to, be easy in well-case perforating pipeline section
Borehole at or sand control screen seepage channel at form blocking, reduce conveyance capacity, oil well liquid-producing and oil productive capacity caused to reduce.
Passage obstruction can effectively be removed using jet stream de-plugging mode, achieve the purpose that improve single well productivity.
Currently, oil field, which solves borehole or the method for sand control screen blocking, mainly chemical method and physical method.Chemical method such as acid
It washes, has stronger corrosiveness to sand control pipe, screen failure is be easy to cause to shake out.Physical method is based on jet stream de-plugging, mesh
Preceding jet stream deblocking tool is connected to the bottom G.I.H of oil pipe string, function list using the jet pipe for having nozzle
One.Need to lift tubing string during jet stream de-plugging, work progress is complicated, and cleaning is not thorough enough, and there are biggish safety is hidden
Suffer from and environmentally friendly risk, production scene need to solve the above problems.
Summary of the invention
The purpose of the utility model is to provide a kind of jet stream de-plugging tubing strings, optionally remove cannula occlusion section, once
Property tripping in alignment blocking position after, be not required to dragging tubing string, carry out huge discharge jet stream, improve construction effect and construction safety,
Reduce production cost.
For achieving the above object, the technical solution adopted in the utility model is：A kind of jet stream de-plugging tubing string includes penetrating
Outer tube is flowed, the tube body of jet stream outer tube is equipped with outer tube jet hole, and inner tube is housed in jet stream outer tube, and the bottom of oil pipe string is sealed by leather cup
It is threadedly coupled every device with the top of jet stream outer tube and inner tube, the lower part of jet stream outer tube and inner tube passes through bottom fitting and sand-removing unblocking
Tool connection；The quantity for the sand control screen being arranged in the number of segment and well inner sleeve of the pipeline section of outer tube jet hole is set in jet stream outer tube
And the number of segment of well-case perforating pipeline section is consistent.
The significant using effect of the utility model is：Cup packer in this tubing string is equipped with central tube, can insulate
Double wall channel is formed in device, the high pressure washing liquid of injection can be separated from each other with the high pressure washing liquid returned out, be made flushing liquor not
It can crossfire.Cup packer top is connect with oil pipe string, its underpart passes through the external screw thread on outer tube linkage section and inner tube linkage section
It is connect respectively with jet stream outer tube and inner tube with internal screw thread, the outer tube jet hole being evenly arranged on jet stream outer tube is upper inclined hole, big to arrange
High speed rotation jet stream can be formed under amount.This tubing string presses design requirement G.I.H, the outer tube jet hole of jet stream outer tube is aligned stifled
Well section is filled in, jet stream outer tube dead leg is aligned with casing dead leg.Inner tube is communicated with the central tube of cup packer and oil pipe string, shape
At flushing liquor backward channel；The double wall channel of double wall chamber and cup packer between inner tube and jet stream outer tube and oil jacket annulus phase
Logical, form flushing liquor enters channel.Centralizer is evenly distributed between jet stream outer tube, keeps this tubing string placed in the middle in casing, thus
Preferably form jet stream.Bottom fitting equally has outer tube linkage section and inner tube linkage section, connects respectively with jet stream outer tube and inner tube
Sealing function is connect and had, crossfire is prevented.Since the centre bore of bottom fitting is communicated with inner tube, its bottom can still connect other solutions
Stifled tool, such as sand-washing pen point carry out sand washing.Bottom fitting is such as connected with intubation, can be applied on horizontal well, and backwash is inserted into
In well valve, the tamper in sand control screen and well-case perforating pipeline section is made to be easier to return out.
Behind G.I.H of this tubing string, alignment de-plugging well section position, without dragging or lifting tubing string, the mountable well in ground
Mouthful.The safety that it is constructed is higher, the discharge capacity of construction flushing liquor is bigger, the high speed rotation high pressure water formed by reacting cycle mode
The dynamics of jet stream is bigger, and de-plugging ability is stronger.This tubing string has selectivity solution plugging function, is suitable for straight well, inclined shaft, horizontal well etc.
Various well type, while bottom can also connect other tools such as sand-washing pen point, intubation etc. and carry out sand washing, tripping in one-trip string can realize punching
Sand, de-plugging dual purpose.Supporting tool intensity in this tubing string is high, is hardly damaged, reusable.Easy construction simultaneously,
De-plugging ability is strong, can effectively shorten the activity duration, improve working efficiency, significantly reduce operating cost, there is significant use
Effect.
Detailed description of the invention
Fig. 1 is the operation principle schematic diagram that this de-plugging tubing string is applied in horizontal well.
Fig. 2 is the structural schematic diagram of cup packer in Fig. 1.
Specific embodiment
The utility model is described in detail below in conjunction with attached drawing, not limits the protection scope of the utility model.It is as described below to be only
The preferred embodiment of the utility model, other use the equivalence changes of the utility model, should belong to the protection of the utility model
Range.
Referring to Fig. 1 and Fig. 2, a kind of jet stream de-plugging tubing string includes jet stream outer tube 4, and the tube body of jet stream outer tube 4 is penetrated equipped with outer tube
Discharge orifice 5.Inner tube 6 is housed, the bottom of oil pipe string is upper by cup packer 1 and jet stream outer tube 4 and inner tube 6 in jet stream outer tube 4
Portion is threadedly coupled, and the lower part of jet stream outer tube 4 and inner tube 6 is connect by bottom fitting 9 with sand-removing unblocking tool；In jet stream outer tube 4
The quantity and well-case perforating pipeline section of the sand control screen 3 being arranged in the number of segment and well inner sleeve of the pipeline section of outer tube jet hole 5 are set
Number of segment be consistent.
Outer tube jet hole 5 in the tube body of the jet stream outer tube 4 is upper inclined hole, has outer tube jet hole 5 in jet stream outer tube 4
Pipeline section is corresponding with the position of sand control screen 3 or well-case perforating pipeline section, the jet stream outer tube dead leg 8 in jet stream outer tube 4 and set
Pipe dead leg 7 is corresponding, can tripping in one-trip string and without dragging tubing string, reach full well selectivity fixed tubular column de-plugging.
Centralizer 2 is uniformly installed in the outside of the jet stream outer tube 4, guarantees that the jet stream de-plugging tubing string of oil pipe string bottom connection exists
Position in casing is placed in the middle.
The cup packer 1 is equipped with upper protection cylinder 11, leather cup 13, central tube 14 and lower protection cylinder 15, upper protection cylinder 11
It is equipped with spout 12 with the barrel of lower protection cylinder 15, upper protection cylinder 11 successively connects with leather cup 13, pedestal of leather bowl and lower protection cylinder 15
It connects, the both ends of central tube 14 connect step with the central tube in upper protection cylinder 11 and lower protection cylinder 15 respectively and are connected, and make guarantor
Casing 11 and spout 12 and the formation of central tube 14 double wall channel 18 on lower protection 15 barrel of cylinder.High pressure washing liquid can be from upper guarantor
The spout 12 of casing 11 enter double wall channel 18, again from the spout 12 of lower protection cylinder 15 enter jet stream outer tube 4 and inner tube 6 it
Between double wall chamber, finally sprayed from outer tube jet hole 5 and in sand-removing unblocking tool, to sand control screen 3 or well-case perforating pipe
Section forms high-pressure water jet, releases blocking.
The maximum outside diameter of the upper protection cylinder 11 and lower protection cylinder 15 is respectively less than the maximum outside diameter after leather cup 13 expands, upper guarantor
The top of casing 11 is equipped with external screw thread and connect with oil pipe string；The lower part of lower protection cylinder 15 is equipped with outer tube linkage section 16 and connects with inner tube
Section 17, the internal screw thread on external screw thread and inner tube linkage section 17 on outer tube linkage section 16 connect with jet stream outer tube 4 and inner tube 6 respectively
It connects.Guarantee high-pressure jet water energy it is enough from cup packer 1 by the double wall chamber between laggard incident flow outer tube 4 and inner tube 6.
The spout 12 is axial groove, and the spout 12 of upper protection cylinder 11 is located in maximum outside diameter section, lower protection cylinder 15
On spout 12 be located in outer tube linkage section 16.
The bottom fitting 9 also be provided with outer tube linkage section and inner tube linkage section, external screw thread thereon and internal screw thread respectively with
Jet stream outer tube 4 and inner tube 6 connect.
The sand-removing unblocking tool includes sand-washing pen point and intubation 10.
As shown in Figure 1, the utility model is in horizontal well in application, the cup packer 1 in tubing string is according to design requirement
After in lower horizontal well, it is adjacent to leather cup 13 moderately on internal surface of sleeve pipe by the small shrink of leather cup 13 and casing inner diameter, by skin
The annular space of bowl 1 upper and lower ends of packer separates.When reacting cycle jet stream de-plugging, flushing liquor is insulated by oil jacket annulus, leather cup
The double wall channel 18 of device 1 and outer tube jet hole 5 form high pressure rotational jetting and carry out to sand control screen 3 or well-case perforating pipeline section
De-plugging.Waste liquid after jet stream de-plugging passes through the central tube of inverse well-flushing valve, intubation 10, bottom fitting 9, inner tube 6, cup packer 1
14 and oil pipe string be back to ground, tamper is thoroughly discharged.
According to stratum stopping state, this tubing string can targetedly flexible combination, outer tube jet hole 5 can be made selectively
It is directed at block part, improves plugging removal effect.
The embodiment described above is only exemplary embodiments, but the utility model is not limited only to these embodiments, ability
The technical staff in domain can make modification under the spirit and enlightenment without departing from the utility model.Aspect disclosed herein may
In the presence of many changes, combination and modification, and all in the scope of the utility model, therefore, protection scope is not limited only to above
Explanation.
Claims (8)
1. the tube body of a kind of jet stream de-plugging tubing string, including jet stream outer tube, jet stream outer tube is equipped with outer tube jet hole, characterized in that penetrate
It flows and inner tube is housed in outer tube, the bottom of oil pipe string is threadedly coupled by cup packer with the top of jet stream outer tube and inner tube, is penetrated
The lower part of stream outer tube and inner tube is connect by bottom fitting with sand-removing unblocking tool；The pipe of outer tube jet hole is set in jet stream outer tube
The quantity of sand control screen and the number of segment of well-case perforating pipeline section being arranged in the number of segment and well inner sleeve of section are consistent.
2. a kind of jet stream de-plugging tubing string as described in claim 1, characterized in that the outer tube in the tube body of the jet stream outer tube is penetrated
Discharge orifice is upper inclined hole, and the pipeline section with outer tube jet hole is opposite with the position of sand control screen or well-case perforating pipeline section in jet stream outer tube
Answer, the jet stream outer tube dead leg in jet stream outer tube it is corresponding with casing dead leg.
3. a kind of jet stream de-plugging tubing string as claimed in claim 1 or 2, characterized in that uniformly pacify the outside of the jet stream outer tube
Fill centralizer.
4. a kind of jet stream de-plugging tubing string as described in claim 1, characterized in that the cup packer be equipped with upper protection cylinder,
The barrel of leather cup, central tube and lower protection cylinder, upper protection cylinder and lower protection cylinder is equipped with spout, upper protection cylinder and leather cup, skin
Bowl seat and lower protection cylinder are sequentially connected, and the both ends of central tube connect step with the central tube in upper protection cylinder and lower protection cylinder respectively
It is connected, makes to protect cylinder and the lower spout protected on cylinder barrel and central, tubular at double wall channel.
5. a kind of jet stream de-plugging tubing string as claimed in claim 4, characterized in that the maximum of the upper protection cylinder and lower protection cylinder
Outer diameter is respectively less than the maximum outside diameter after leather cup expansion, and the top of upper protection cylinder is equipped with external screw thread and connect with oil pipe string；Lower protection cylinder
Lower part be equipped with outer tube linkage section and inner tube linkage section, the internal screw thread on the external screw thread and inner tube linkage section on outer tube linkage section point
It is not connect with jet stream outer tube and inner tube.
6. a kind of jet stream de-plugging tubing string as claimed in claim 5, characterized in that the spout is axial groove, upper protection cylinder
Spout be located in maximum outside diameter section, it is lower protection cylinder on spout be located in outer tube linkage section.
7. a kind of jet stream de-plugging tubing string as described in claim 1, characterized in that the bottom fitting also is provided with outer tube linkage section
It is connect respectively with jet stream outer tube and inner tube with inner tube linkage section, external screw thread thereon and internal screw thread.
8. a kind of jet stream de-plugging tubing string as described in claim 1, characterized in that the sand-removing unblocking tool includes sand-washing pen point
And intubation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820488529.6U CN208137872U (en) | 2018-04-09 | 2018-04-09 | A kind of jet stream de-plugging tubing string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820488529.6U CN208137872U (en) | 2018-04-09 | 2018-04-09 | A kind of jet stream de-plugging tubing string |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208137872U true CN208137872U (en) | 2018-11-23 |
Family
ID=64292008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820488529.6U Expired - Fee Related CN208137872U (en) | 2018-04-09 | 2018-04-09 | A kind of jet stream de-plugging tubing string |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208137872U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108104757A (en) * | 2017-08-17 | 2018-06-01 | 中国石油天然气股份有限公司 | Unfreezing tool and unfreezing method |
| CN109505655A (en) * | 2019-01-16 | 2019-03-22 | 河南理工大学 | A kind of method of construction of salt hole air reserved storeroom |
| CN115613981A (en) * | 2022-12-15 | 2023-01-17 | 山东成林石油工程技术有限公司 | Downhole jet flow blockage removing pipe column |
-
2018
- 2018-04-09 CN CN201820488529.6U patent/CN208137872U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108104757A (en) * | 2017-08-17 | 2018-06-01 | 中国石油天然气股份有限公司 | Unfreezing tool and unfreezing method |
| CN108104757B (en) * | 2017-08-17 | 2020-04-10 | 中国石油天然气股份有限公司 | Unfreezing tool and unfreezing method |
| CN109505655A (en) * | 2019-01-16 | 2019-03-22 | 河南理工大学 | A kind of method of construction of salt hole air reserved storeroom |
| CN115613981A (en) * | 2022-12-15 | 2023-01-17 | 山东成林石油工程技术有限公司 | Downhole jet flow blockage removing pipe column |
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Legal Events
| 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: 20181123 Termination date: 20210409 |