CN205858200U - A kind of sand washing joint - Google Patents
A kind of sand washing joint Download PDFInfo
- Publication number
- CN205858200U CN205858200U CN201620739470.4U CN201620739470U CN205858200U CN 205858200 U CN205858200 U CN 205858200U CN 201620739470 U CN201620739470 U CN 201620739470U CN 205858200 U CN205858200 U CN 205858200U
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- CN
- China
- Prior art keywords
- sand washing
- connecting tube
- joint
- washing joint
- sliding sleeve
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- 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.)
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Abstract
The utility model discloses a kind of sand washing joint, including connecting tube, described connecting tube be wholely set or releasable connection sets part, described in set part and be provided with the flowing hole sprayed for liquid connected with described connecting tube, described in set part be spheroid or hemisphere.In use, threaded with coiled tubing in one end of the connecting tube of described sand washing joint, by coiled tubing, described sand washing joint can be delivered to predetermined pitching sliding sleeve position, opens pressure break pump truck, infusion working solution, pressurizes coiled tubing to open pitching sliding sleeve.It addition, when described sand washing joint is hampered during lower going-into-well, sand washing unfreezing operation can be carried out by the described positive well-flushing of sand washing joint.Described sand washing joint is provided with sand washing simultaneously and opens the function of pitching sliding sleeve.
Description
Technical field
This utility model relates to petroleum industry production technique field, particularly to a kind of sand washing joint.
Background technology
At present, domestic horizontal gas well bore hole staged fracturing technique is mainly sprayed with bore hole present tube column sectional pressure break and waterpower
It is main for penetrating staged fracturing, and owing to water-jet staged fracturing technique is unreliable, increasing gas well selects to use bore hole preset
Tubing string staged fracturing technological transformation stratum, this staged fracturing technique uses more than 1000 wells at Ordos Basin, the most general
Time.This staged fracturing technique in use, by pressure reduction sliding sleeve is suppressed unlatching first paragraph fracturing sliding bush, then uses setting ball
The mode after being pumped to ball seat suppressed setting ball opens follow-up fracturing sliding bush.When occurring that sand plug causes oil-line plugging,
Setting ball generally cannot deliver to precalculated position to open pitching sliding sleeve, this can cause whole fracturing process to proceed,
It addition, the most often squeeze with repeatedly examination, which increase the risk of tubing string deformation fracture, it is therefore desirable to oil pipe is carried out
Sand washing operation.Chinese patent CN203891842U (authorized announcement date 2014.10.22) discloses a kind of sand washing joint, this sand washing
Joint includes that flush pipe and connecting tube, two pipes join end to end and forms through pipe, and flush pipe front port is provided with radially punching
Wash mouth.Described sand washing joint uses radially and the dual cleaning way of vertical direction, thus can be to the knot being attached on casing wall
The foreign material such as dirt thing, reservoir sand, landwaste are effectively cleared up.But described sand washing joint function singleness, it is impossible to meet pressure well
Split being actually needed of technique, during a certain section of stratum is carried out pressure break, it may appear that the situation that setting ball pumping is not in place.
Additionally there is also after setting ball pumping being put in place, pitching sliding sleeve is because of factors such as mechanical breakdown, formation water immersions, it is impossible to by beating
The phenomenon that the mode of pressure is opened.Both of these case all can cause abandoning this section of pressure break.
Summary of the invention
The purpose of this utility model is to provide a kind of sand washing joint, to solve sand washing joint function list in prior art
One, and setting ball is not in place because sand plug pumps or pitching sliding sleeve is because of mechanical breakdown, stratum water logging during fracturing technology
The factors such as bubble cannot be opened by the way of suppressing thus be caused the problem that certain section of stratum cannot be carried out pressure break.
For achieving the above object, the technical scheme of this utility model sand washing joint is: sand washing joint, including connecting tube, institute
State and be wholely set in connecting tube or releasable connection sets part, described in set part and be provided with and connect for liquid with described connecting tube
The flowing hole of ejection.
The described part that sets is spheroid or is hemisphere.
Described connecting tube is threadeded with the described part that sets.
Described setting the tapped through hole being provided with on part for connecting described connecting tube, described flowing hole is led to by described screw thread
Hole is formed.
The female thread for being connected it is provided with coiled tubing in described connecting tube.
The beneficial effects of the utility model are: this utility model sand washing joint adds on the basis of existing sand washing joint
The function of pitching sliding sleeve opened by machinery.Sand washing joint in use, one end of the connecting tube of sand washing joint and coiled tubing screw thread
Connect, by coiled tubing, sand washing joint can be delivered to predetermined pitching sliding sleeve position, make to set part and pitching on sand washing joint
Sliding sleeve tee sets cooperation, opens pressure break pump truck, infusion working solution, pressurizes coiled tubing to open pitching sliding sleeve.It addition, work as
When sand washing joint is hampered during lower going-into-well, the positive well-flushing of sand washing joint can be passed through, carry out sand washing unfreezing operation.
Accompanying drawing explanation
Fig. 1 is this utility model sand washing joint design schematic diagram；
Fig. 2 is the connecting pipe structure schematic diagram of sand washing joint；
Fig. 3 is the structural representation setting part of sand washing joint.
Detailed description of the invention
The specific embodiment of this utility model sand washing joint, as it is shown in figure 1, sand washing joint includes connecting tube 2 and sets part
5, both materials all select P110 grade of steel.As in figure 2 it is shown, connecting tube 2 is the cylinder being provided with through hole, one end is provided with screwed hole
1, the other end is provided with the stud 3 of band through hole.As it is shown on figure 3, setting part 5 is the spheroid being provided with tapped through hole 4, set part 5
Maximum gauge slightly larger than the diameter dimension in pitching sliding sleeve tee hole to be opened and less than higher level's ball seat size.In connecting tube 2
Stud 3 is connected with the tapped through hole 4 set on part 5, make connecting tube 2 with set part 5 be connected formed sand washing joints.
Sand washing joint is connected with coiled tubing ROLL-ON joint by screwed hole 1, forms quick release with coiled tubing and beats
Drive pitching sliding sleeve instrument.In use, described instrument is entered from well head is slow, it is to avoid during lower going-into-well, set part 5 mistake
Degree eccentric wear, size reduce, and when predetermined pitching sliding sleeve position delivered to by described instrument, sand washing joint set part and pitching sliding sleeve
Ball seat sets cooperation, opens pressure break pump truck, with 0.2m3The discharge capacity of/min slowly infusion working solution in coiled tubing, closes simultaneously
Closing casing annulus, be rinsed near pitching sliding sleeve tee, pressurize 0.5t, visits 3 times again, it is ensured that after position is correct, from well head
Pressurize 1t to coiled tubing, confirms that setting part is seated on pitching sliding sleeve tee, and coiled tubing pressurization is less than 1.5t, it is to avoid even
Continuous oil pipe fatigue deformation.Along with the continuous infusion of working solution, well head oil pressure slowly raises, when pressure declines suddenly or oily continuously
When pipe suspending weight raises, it was demonstrated that pitching sliding sleeve is opened.
When described quick release open pitching sliding sleeve instrument be hampered during lower going-into-well time, just can be washed by sand washing joint
Well, carries out sand washing unfreezing operation.At well head infusion flushing fluid in coiled tubing, when flushing fluid arrives described sand washing joint,
According to Throttle Principle, sand bridge from the ejection at a high speed of described sand washing joint, thus can be broken up, reaches the purpose of unfreezing by flushing fluid.
In other embodiments, connecting tube and set the releasable connection mode that can use other between part, such as, can sit
Arrange on sealing and be available for the through hole that connecting tube is inserted, thread mill drilling on the direction vertical with through hole, insert screws into described
Screwed hole compresses connecting tube, it is achieved connecting tube fixing is connected with set part.
In other embodiments, set part and can be provided with the hemisphere of tapped through hole.
In other embodiments, connecting tube can be wholely set with setting part.
Claims (5)
1. sand washing joint, including connecting tube, it is characterised in that: it is wholely set in described connecting tube or releasable connection sets part,
The described part that sets is provided with the flowing hole sprayed for liquid connected with described connecting tube.
Sand washing joint the most according to claim 1, it is characterised in that set part described in: and be spheroid or be hemisphere.
Sand washing joint the most according to claim 1, it is characterised in that: described connecting tube is threadeded with the described part that sets.
Sand washing joint the most according to claim 3, it is characterised in that set described in: and be provided with on part for connecting described company
The tapped through hole of adapter, described flowing hole is formed by described tapped through hole.
5. according to the arbitrary described sand washing joint of Claims 1-4, it is characterised in that: be provided with in described connecting tube for
The female thread that coiled tubing connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620739470.4U CN205858200U (en) | 2016-07-14 | 2016-07-14 | A kind of sand washing joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620739470.4U CN205858200U (en) | 2016-07-14 | 2016-07-14 | A kind of sand washing joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205858200U true CN205858200U (en) | 2017-01-04 |
Family
ID=57646819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620739470.4U Active CN205858200U (en) | 2016-07-14 | 2016-07-14 | A kind of sand washing joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205858200U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194093A (en) * | 2016-08-31 | 2016-12-07 | 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 | The orientation of a kind of open sliding sleeve slightly solubility ball is shot through instrument and technique |
-
2016
- 2016-07-14 CN CN201620739470.4U patent/CN205858200U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194093A (en) * | 2016-08-31 | 2016-12-07 | 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 | The orientation of a kind of open sliding sleeve slightly solubility ball is shot through instrument and technique |
| CN106194093B (en) * | 2016-08-31 | 2019-04-16 | 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 open sliding sleeve is shot through tool and technique with the orientation of slightly solubility ball |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |