CN207144852U - One kind floating setting of casing high intensity self-dissolving formula box cupling - Google Patents
One kind floating setting of casing high intensity self-dissolving formula box cupling Download PDFInfo
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- CN207144852U CN207144852U CN201720830991.5U CN201720830991U CN207144852U CN 207144852 U CN207144852 U CN 207144852U CN 201720830991 U CN201720830991 U CN 201720830991U CN 207144852 U CN207144852 U CN 207144852U
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- sleeve
- dissolving
- sliding sleeve
- bearing plate
- liquid bath
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Abstract
The utility model discloses one kind to float setting of casing high intensity self-dissolving formula box cupling, including top connection, sliding sleeve, bearing plate and lower contact, and the inwall of the top connection is provided with chute, and sliding sleeve forms the sealing that slides axially with chute and coordinated；Bearing plate and lower contact are sealedly and fixedly connected；Sleeve is provided with the top of bearing plate, sleeve upper end is connected with sliding sleeve bottom by pin, and sliding sleeve bottom forms axial grafting with upper cartridge and coordinated；In sleeve opener is provided with bearing plate joint portion；Dissolving liquid bath is set in sleeve；The sliding sleeve bottom for dissolving liquid bath and top forms extrusion fit, and the opener composition unlatching for dissolving liquid bath and lower section coordinates；The bearing plate, sleeve, sliding sleeve and dissolving liquid bath are that self-dissolving formula high-strength material is made.The utility model has bearing capacity height, and operation path is opened in voluntarily dissolving；Construction safety, plug and tripping operation need not be simply launched, save engineering time and cost, be applicable and extended reach well and the solid completion practice of long horizontal sections horizontal well.
Description
Technical field
The utility model is related to needs to meet under safety in oil development drilling engineering extended reach well setting of casing well cementing process
Enter a kind of completion tool that sleeve pipe uses.
Background technology
Oil development drilling engineering extended reach well gradient is big, horizontal segment length, using conventional Casing running technology, in net horizontal section
Because sleeve pipe self gravitation effect is close on the downside of the borehole wall, therefore frictional resistance is big during tripping in, it is more likely that causes to cover
Pipe can not reach the position specified, and have a strong impact on and be drilled well operations.
Patent No. ZL200720169771.9 disclose exempts from bore blind plate, its shortcoming difficult sealing to meet field requirement, and
It is uncontrollable after blind plate rupture, it may cause a hidden trouble in production.Such as：In well cementing process, may influence plug must be by difficult
To ensure being normally carried out for well cementing operation.
Patent No. ZL200820124103.9 discloses a kind of casing float collar, and shortcoming is to need tripping in drilling tool to float
Suspension joint hoop is bored and removed, complicated construction technique, adds time and the cost of operation.
It is construction that Patent No. CN104879072A, which discloses extended reach well floating setting of casing with brill floating coupling, shortcoming is exempted from,
Complex process adds the probability that accident occurs, it is necessary to launch plug twice.And all components need to shift shaft bottom, shadow onto
Ring oil producing operation.
Utility model content
The purpose of this patent is to be directed to above-mentioned problems of the prior art, there is provided a kind of drift simple in construction, practical
Floating setting of casing high intensity self-dissolving formula box cupling.
The technical solution of the utility model is：
One kind floating setting of casing high intensity self-dissolving formula box cupling, including top connection, sliding sleeve, bearing plate and lower contact, wherein：
The inwall of the top connection is provided with chute, and sliding sleeve forms the sealing that slides axially with chute and coordinated；Bearing plate and lower contact sealing are solid
Fixed connection；Sleeve is provided with the top of bearing plate, sleeve upper end is connected with sliding sleeve bottom by pin, and sliding sleeve bottom with
Upper cartridge forms axial grafting and coordinated；In sleeve opener is provided with bearing plate joint portion；Dissolving liquid bath is set in sleeve；
The sliding sleeve bottom for dissolving liquid bath and top forms extrusion fit, and the opener composition unlatching for dissolving liquid bath and lower section coordinates；It is described
Bearing plate, sleeve, sliding sleeve and dissolving liquid bath are that self-dissolving formula high-strength material is made.
Preferably, the sliding sleeve outer wall sets two-stage step type annular protrusion, and the one-level in upper end is raised to form axle with chute
Coordinate to being slidingly sealed, two level is raised to form spacing cooperation with the top of sleeve.
Preferably, anticorrosive coat is scribbled in dissolving liquid bath inwall.
Preferably, the bearing plate is arcuate structure, and its concave profile is upward.
Preferably, ring packing is set respectively between sliding sleeve and chute, top connection and lower contact, bearing plate and lower contact
Part.
It is of the present utility model floating setting of casing be with the technical advantage of high intensity self-dissolving formula box cupling：It is main element sliding sleeve, molten
It is self-dissolving formula high-strength material to solve liquid bath, sleeve and bearing plate, and casing coupling internal diameter is identical with casing inner diameter size, upper and lower silk
Button connection, after the completion of normal operation, lysate is discharged by dissolving liquid bath, can be with the main part of fast automatic dissolving box cupling
In part, without launching plug and tripping operation, you can realize that box cupling internal diameter is consistent with casing inner diameter, can make at horizontal segment sleeve pipe
In hollow state, the reducing friction resistance under drilling fluid buoyancy, the safe and smooth tripping in of sleeve pipe is realized, so as to solve big position
The problem of moving down-hole casing difficulty.Meanwhile simplify the construction technology of such completion tool at present, save and bore completion time and cost.
The experiment proved that, box cupling of the present utility model be used in big displacement Completion Operations in, can effectively reduce sleeve pipe with
Frictional force between the borehole wall, solve the problems, such as setting of casing difficulty in big displacement Completion Operations, except with simple in construction, practical,
Low friction resistance is dropped, makes the smooth tripping in of sleeve pipe, the features such as can also preventing casing wear；Pressure-bearing made of other self-dissolving formula high-strength material
Plate（Substitute blind plate）, its bearing strength is high, after the completion of site operation can controllable dissolving automatically, ensure that the full-bore of sleeve pipe,
The operation in later stage is not influenceed.
Brief description of the drawings
Fig. 1 is a kind of structural representation for floating state before setting of casing high intensity self-dissolving formula box cupling dissolves；
Fig. 2 is a kind of structure for floating the descending unlatching lysate slot status of setting of casing high intensity self-dissolving formula box cupling sliding sleeve
Schematic diagram；
Fig. 3 is a kind of structural representation for floating setting of casing and rear state being completely dissolved with high intensity self-dissolving formula box cupling；
In figure：1 be top connection, 2 sliding sleeves, 3 sleeves, 4 dissolving liquid baths, 5 openers, 6 bearing plates, 7 sealing rings, 8 lower contacts,
9 sealing rings, 10 pins, 11 sealing rings, 12 lysates.
Embodiment
In order to have clearer understanding to the technical characteristics of the utility model, purpose and using effect, accompanying drawing 1-3 is now compareed
Illustrate specific embodiment of the present utility model.
One kind floating setting of casing high intensity self-dissolving formula box cupling, including top connection 1, sliding sleeve 2, sleeve 3, dissolving liquid bath 4, open
Open device 5, bearing plate 6 and lower contact 8, pin 10.
Wherein：The inwall of the top connection 1 is provided with chute, and sliding sleeve 2 forms the sealing that slides axially with chute and coordinated；Bearing plate
6 and lower contact 8 be sealedly and fixedly connected（Fixed form is preferably threadedly coupled）；Sleeve 3 is located at the top of bearing plate 6, the upper end of sleeve 3
Portion is connected with the bottom of sliding sleeve 2 by pin 10, and the bottom of sliding sleeve 2 forms axial grafting with the top of sleeve 3 and coordinated；In sleeve 3
It is interior to be provided with opener 5 with the joint portion of bearing plate 6；Dissolving liquid bath 4 is arranged in sleeve 3；Dissolve liquid bath 4 and the bottom of sliding sleeve 2 of top
Portion forms extrusion fit, and dissolving liquid bath 4 and the composition unlatching of opener 5 of lower section coordinate；The bearing plate 6, sleeve 3, the and of sliding sleeve 2
It is that self-dissolving formula high-strength material is made to dissolve liquid bath 4（What the material was applied before can refer to the applicant《A kind of high intensity,
Soluble metal based composites and preparation method thereof》, number of patent application：201710445032.6）.
Preferably, the outer wall of sliding sleeve 2 sets two-stage step type annular protrusion, and the one-level in upper end is raised to form axle with chute
Coordinate to being slidingly sealed, two level is raised to form spacing cooperation with the top of sleeve 3（Refer to Fig. 2）.
Preferably, anticorrosive coat is scribbled in the dissolving inwall of liquid bath 4, so effectively can extends lysate under non-job state
To the dissolution time of dissolving liquid bath in itself.
Preferably, the bearing plate 6 is arcuate structure, and upward, and its thickness is in 18mm for its concave profile.
Preferably, ring is set respectively between sliding sleeve 2 and chute, top connection 1 and lower contact 7, bearing plate 6 and lower contact 7
Shape seal（9th, 11,7）.
Preferably, opener 5 uses annular cutting knife and corresponding dissolving liquid bath 4 uses structure with thin body, is easy to dissolve
Liquid bath 4 is opened, with quick release lysate 12.The selection of lysate carries out corresponding selection according to self-dissolving formula high-strength material, its
Purpose is quickly, fully can to dissolve the material.
Its operation principle is：As shown in figure 1, connect under below the inner passage of top connection above bearing plate and bearing plate
The inner passage of head is separated by bearing plate.When completing casing job, built the pressure by well head, open sliding sleeve is descending, extruding dissolving
Liquid bath, dissolving liquid bath is opened, discharges lysate, started to dissolve bearing plate, after dissolving certain time, can continue to suppress, pressure-bearing
Plate comes off.The inner passage of top connection and the inner passage of lower contact form passage, continue normally to consolidate completion practice.
Advantage of the present utility model with not available for prior art is further illustrated by above-described embodiment：First, adopt
With built-in dissolving liquid bath, without additional lysate, construction technology is saved, automation controllable degree is high, realizes accurate, timed dissolution
Bearing plate.Second, dissolving liquid bath is pressurizeed by turn on pump opens sliding sleeve, so as to open dissolving liquid bath, automaticity is high, realizes essence
Accurate, timed dissolution opens bearing plate, after about 24 hours（Time is adjustable）Bearing plate pressure declines, and improves pressure and gets through passage,
Normal operation can be started, make casing coupling is inside and outside to turn on, form path, cementing operation can be carried out.Third, bearing capacity is high,
So as to ensure the reliability of work progress.Fourth, construction technological process is simple, engineering time and cost are saved.
Claims (5)
1. one kind floating setting of casing high intensity self-dissolving formula box cupling, including top connection, sliding sleeve, bearing plate and lower contact, its feature
It is：The inwall of the top connection is provided with chute, and sliding sleeve forms the sealing that slides axially with chute and coordinated；Bearing plate and lower contact sealing
It is fixedly connected；Sleeve is provided with the top of bearing plate, sleeve upper end is connected with sliding sleeve bottom by pin, and sliding sleeve bottom
Axial grafting is formed with upper cartridge to coordinate；In sleeve opener is provided with bearing plate joint portion；Lysate is set in sleeve
Groove；The sliding sleeve bottom for dissolving liquid bath and top forms extrusion fit, and the opener composition unlatching for dissolving liquid bath and lower section coordinates；Institute
It is that self-dissolving formula high-strength material is made to state bearing plate, sleeve, sliding sleeve and dissolving liquid bath.
2. floating setting of casing high intensity self-dissolving formula box cupling according to claim 1, it is characterized in that：The sliding sleeve outer wall is set
Two-stage step type annular protrusion, one-level projection and chute in upper end form the sealing that slides axially and coordinated, two level projection and sleeve
Top form spacing cooperation.
3. floating setting of casing high intensity self-dissolving formula box cupling according to claim 1 or 2, it is characterized in that：In dissolving liquid bath
Inwall scribbles anticorrosive coat.
4. floating setting of casing high intensity self-dissolving formula box cupling according to claim 1 or 2, it is characterized in that：The bearing plate
For arcuate structure, its concave profile is upward.
5. floating setting of casing high intensity self-dissolving formula box cupling according to claim 1 or 2, it is characterized in that：In sliding sleeve and cunning
Lip ring is set respectively between groove, top connection and lower contact, bearing plate and lower contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720830991.5U CN207144852U (en) | 2017-07-11 | 2017-07-11 | One kind floating setting of casing high intensity self-dissolving formula box cupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720830991.5U CN207144852U (en) | 2017-07-11 | 2017-07-11 | One kind floating setting of casing high intensity self-dissolving formula box cupling |
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| CN207144852U true CN207144852U (en) | 2018-03-27 |
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| CN201720830991.5U Active CN207144852U (en) | 2017-07-11 | 2017-07-11 | One kind floating setting of casing high intensity self-dissolving formula box cupling |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107313727A (en) * | 2017-07-11 | 2017-11-03 | 中石化石油工程技术服务有限公司 | One kind floating setting of casing high intensity self-dissolving formula box cupling |
| CN109296338A (en) * | 2018-12-07 | 2019-02-01 | 柳江 | A kind of solvable bridge plug of self-decomposition formula |
| CN109488251A (en) * | 2018-11-20 | 2019-03-19 | 中国石油天然气股份有限公司 | A kind of preset dissolving medium mechanism and application method |
-
2017
- 2017-07-11 CN CN201720830991.5U patent/CN207144852U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107313727A (en) * | 2017-07-11 | 2017-11-03 | 中石化石油工程技术服务有限公司 | One kind floating setting of casing high intensity self-dissolving formula box cupling |
| CN109488251A (en) * | 2018-11-20 | 2019-03-19 | 中国石油天然气股份有限公司 | A kind of preset dissolving medium mechanism and application method |
| CN109488251B (en) * | 2018-11-20 | 2024-03-26 | 中国石油天然气股份有限公司 | Mechanism for presetting dissolution medium and use method |
| CN109296338A (en) * | 2018-12-07 | 2019-02-01 | 柳江 | A kind of solvable bridge plug of self-decomposition formula |
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