CN104818959A - Adjustable classification hoop for well cementation casing running - Google Patents
Adjustable classification hoop for well cementation casing running Download PDFInfo
- Publication number
- CN104818959A CN104818959A CN201510163541.0A CN201510163541A CN104818959A CN 104818959 A CN104818959 A CN 104818959A CN 201510163541 A CN201510163541 A CN 201510163541A CN 104818959 A CN104818959 A CN 104818959A
- Authority
- CN
- China
- Prior art keywords
- shear pin
- seat
- hoop
- pin hole
- opening
- Prior art date
- 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.)
- Pending
Links
- 239000004568 cement Substances 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 238000004513 sizing Methods 0.000 claims description 22
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000007547 defect Effects 0.000 abstract 1
- 208000034656 Contusions Diseases 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention provides an adjustable classification hoop for well cementation casing running. The adjustable classification hoop comprises a body, a sealing groove, an opening seat, shear pin holes, opening rings, an inner slide bushing, a closing seat and a lower joint. The body is a hollow cylinder, a female thread connected with a casing is arranged at the upper end of the body, and the lower joint connected with the casing is arranged at the lower end of the body. A cement hole is formed in the middle of the body, and the two ends of the cement hole are each provided with a sealing groove. The closing seat, the inner slide bushing and the opening seat are sequentially arranged in the cement hole below the female thread on the upper portion of the body. The opening seat and the body are both provided with the shear pin holes. The shear pin holes in the opening seat correspond to the shear pin holes in the body, and the opening rings are arranged at the upper ends of the shear pin holes. The adjustable classification hoop for well cementation casing running can overcome the defect that a traditional hydraulic classification hoop is narrow in application range; according to the adjustable classification hoop, the number of shear pins can be adjusted at will under complex well conditions, so that the opening pressure is controlled. In addition, the adjustable classification hoop for well cementation casing running has the advantages of being reasonable in structure, easy to operate, safe and reliable.
Description
Technical field
The invention belongs to well cementing operation apparatus field, especially relate to a kind of for cased adjustable sizing collar of cementing the well.
Background technology
At present, on general hydraulic stage collar body, in order to stop or reduce leakage, be only provided with a shear pin hole, each shear pin is loaded by this hole, and when opening constant pressure, this kind of design is rational; When hole condition changes, when opening pressure change, General hydraulic sizing collar can be subject to the restriction of opening pressure, has unicity, causes the shear pin number of design and actual requirement not to meet.For this reason, study adjustable hydraulic stage collar to be extremely necessary.
Summary of the invention
In view of this, the present invention is intended to propose one for cased adjustable sizing collar of cementing the well, use this sizing collar can overcome the feature of conventional hydraulic sizing collar narrow application range, make adjustable sizing collar arbitrarily can regulate shear pin quantity to control the size opening pressure under the hole condition of situation complexity, flexible and convenient to use.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of for cased adjustable sizing collar of cementing the well, comprise body, seal groove, open seat, shear pin hole, split ring, inner sliding sleeve, close seat and lower contact, described body is the cylindrical of hollow, body upper end is provided with the box thread be connected with sleeve pipe, body bottom is provided with the lower contact be connected with sleeve pipe, cement hole is provided with in the middle part of described body, the two ends in cement hole are respectively equipped with seal groove, closedown seat is provided with successively in cement hole below body upper part box thread, inner sliding sleeve and open seat, described opening on seat and body is respectively equipped with shear pin hole, the shear pin hole of opening on seat is corresponding with the shear pin hole on body, upper end, described shear pin hole is provided with split ring
Further, the quantity in described shear pin hole is more than 3.
Further, the extension in described shear pin hole is provided with the sealing of NPT plug.
Further, short pitch thread made in U.S.A is provided with in described lower contact.
Further, be provided with shear pin in described shear pin hole, shear pin is regulated by body exterior.
Relative to prior art, one of the present invention has following advantage for cased adjustable sizing collar of cementing the well: when cementing the well, after determining to open the numerical value of pressure, shear pin quantity is changed by dismounting shear pin, namely change and open pressure to adapt to hole condition requirement, and body need not be changed and open seat, relative position between inner sliding sleeve, meet with simply, efficient configuration controls the requirement of opening pressure, use this novel adjustable sizing collar can overcome the feature of conventional hydraulic sizing collar narrow application range, make adjustable sizing collar arbitrarily can regulate shear pin quantity under the hole condition of situation complexity, in order to control the size opening pressure, novel adjustable sizing collar is used to be that site safety is produced, the needs of carrying out production strictly in line with rules and regulations, also be the needs of technological progress, in addition, this apparatus structure is reasonable, be easy to operation, safe and reliable.
Accompanying drawing explanation
The accompanying drawing forming a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the overall structure schematic diagram described in the embodiment of the present invention.
Description of reference numerals:
1-body, 2-seal groove, 3-opens seat, 4-shear pin hole, 5-split ring, 6-inner sliding sleeve, and 7-closes seat, 8-lower contact.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the present invention and the feature in embodiment can combine mutually.
In addition, one mentioned in an embodiment of the present invention is for cased adjustable sizing collar of cementing the well, comprise body 1, seal groove 2, open seat 3, shear pin hole 4, split ring 5, inner sliding sleeve 6, close seat 7 and lower contact 8, described body 1 is the cylindrical of hollow, body 1 upper end is provided with the box thread be connected with sleeve pipe, body 1 bottom is provided with the lower contact 8 be connected with sleeve pipe, cement hole is provided with in the middle part of described body 1, the two ends in cement hole are respectively equipped with seal groove 2, be provided with successively in cement hole below the box thread of body 1 top and close seat 7, inner sliding sleeve 6 and open seat 3, described opening on seat 3 and body 1 is respectively equipped with shear pin hole 4, open the shear pin hole 4 on seat 3 and the shear pin hole 4 on body 1 corresponding, upper end, described shear pin hole 4 is provided with split ring 5.
The quantity in described shear pin hole 4 is more than 3.
The extension in described shear pin hole 4 is provided with the sealing of NPT plug.
Short pitch thread made in U.S.A is provided with in described lower contact 8.
Be provided with shear pin in described shear pin hole 4, shear pin is regulated by body exterior.
Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
The body 1 of hydraulic stage collar has three shear pin holes 4, one in side, other two at opposite side, shear pin hole 4 on body 1 is corresponding with the shear pin hole 4 of opening on seat 3, shear pin hole 4 place has NPT plug to ensure good seal, shear pin hole 4 place can remove at any time or increase shear pin, when cementing the well, first, after determining to open the numerical value of pressure, according to the size dismounting shear pin of pressure, namely change and open pressure to adapt to hole condition requirement, when pressure is large, increase shear pin quantity, pressure hour, reduce shear pin quantity; When after injection one class g cement, the following annular space position of sizing collar mud to sleeve pipe is replaced from bottom, after one-level thes cement solidifies, well head builds the pressure to opening seat 3 and cuts off with body 1 junction shear pin, the cement hole of sizing collar body 1 and inner sliding sleeve 6 junction is opened, and can set up circulation, under special circumstances, when hydraulic open is unsuccessful, can drops into and open plug to carry out perforate operation; After this two class g cements are injected, release shut-off plug, replace mud, close seat 8 when shut-off plug comes downwards to sizing collar and after bruising, continue pressurization, inner sliding sleeve 6 and body 1 junction shear pin are cut off, inner sliding sleeve 6 stops after coming downwards to split ring 5 position, now close circulation port, adopt split ring 5 self-locking structure, permanent self-locking after inner sliding sleeve 6 is closed.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. one kind for cased adjustable sizing collar of cementing the well, it is characterized in that: comprise body, seal groove, open seat, shear pin hole, split ring, inner sliding sleeve, close seat and lower contact, described body is the cylindrical of hollow, body upper end is provided with the box thread be connected with sleeve pipe, body bottom is provided with the lower contact be connected with sleeve pipe, cement hole is provided with in the middle part of described body, the two ends in cement hole are respectively equipped with seal groove, closedown seat is provided with successively in cement hole below body upper part box thread, inner sliding sleeve and open seat, described opening on seat and body is respectively equipped with shear pin hole, the shear pin hole of opening on seat is corresponding with the shear pin hole on body, upper end, described shear pin hole is provided with split ring.
2. one according to claim 1 is for cased adjustable sizing collar of cementing the well, and it is characterized in that: the quantity in described shear pin hole is more than 3.
3. one according to claim 1 is for cased adjustable sizing collar of cementing the well, and it is characterized in that: the extension in described shear pin hole is provided with the sealing of NPT plug.
4. one according to claim 1 is for cased adjustable sizing collar of cementing the well, and it is characterized in that: be provided with short pitch thread made in U.S.A in described lower contact.
5. one according to claim 1 is for cased adjustable sizing collar of cementing the well, and it is characterized in that: be provided with shear pin in described shear pin hole, shear pin is regulated by body exterior.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510163541.0A CN104818959A (en) | 2015-04-08 | 2015-04-08 | Adjustable classification hoop for well cementation casing running |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510163541.0A CN104818959A (en) | 2015-04-08 | 2015-04-08 | Adjustable classification hoop for well cementation casing running |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104818959A true CN104818959A (en) | 2015-08-05 |
Family
ID=53729412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510163541.0A Pending CN104818959A (en) | 2015-04-08 | 2015-04-08 | Adjustable classification hoop for well cementation casing running |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104818959A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106677719A (en) * | 2015-11-09 | 2017-05-17 | 中石化石油工程技术服务有限公司 | Well cementing method, well cementing assembly and collapse type sleeve floating coupling thereof |
| CN110566186A (en) * | 2019-09-24 | 2019-12-13 | 中国石油集团渤海钻探工程有限公司 | Method for measuring open blockage encountering and blocking position in two-stage well cementation operation |
-
2015
- 2015-04-08 CN CN201510163541.0A patent/CN104818959A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106677719A (en) * | 2015-11-09 | 2017-05-17 | 中石化石油工程技术服务有限公司 | Well cementing method, well cementing assembly and collapse type sleeve floating coupling thereof |
| CN106677719B (en) * | 2015-11-09 | 2019-07-16 | 中石化石油工程技术服务有限公司 | A kind of cementing method, well cementation component and its collapse type casing float collar |
| CN110566186A (en) * | 2019-09-24 | 2019-12-13 | 中国石油集团渤海钻探工程有限公司 | Method for measuring open blockage encountering and blocking position in two-stage well cementation operation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150805 |