CN206144517U - Cement holds and stays ware - Google Patents
Cement holds and stays ware Download PDFInfo
- Publication number
- CN206144517U CN206144517U CN201621151839.6U CN201621151839U CN206144517U CN 206144517 U CN206144517 U CN 206144517U CN 201621151839 U CN201621151839 U CN 201621151839U CN 206144517 U CN206144517 U CN 206144517U
- Authority
- CN
- China
- Prior art keywords
- packing element
- cone
- steel ball
- slipses
- hole
- 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.)
- Expired - Fee Related
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- Earth Drilling (AREA)
Abstract
The utility model relates to an oil well drilling and production technology field especially relates to a cement holds and stays ware, including last sour jujube head, go up slips, top shoe, go up the cone, go up the packing element, well packing element, packing element, cone, slider, slips, center tube, sour jujube head and steel ball down down down, the upper portion of center tube and the ring week of lower part be equipped with the ratchet respectively, it is located to go up the slips go up the lower part of sour jujube head, go up the cone, go up the packing element, well packing element, down the packing element, down the cone place in in proper order in the ring channel of center tube, down the slider the lower part with the down upper portion cooperation of slips, lower sour jujube head with the cooperation of center tube lower part, the lower overhead supporting seat that has of sour jujube, the middle part of supporting seat has the through -hole, and the steel ball is arranged in on the through -hole, the upper portion of steel ball is equipped with the end cover, the end cover lower part with the sour jujube head is fixed down, and end cover upper portion has the round hole. The packing element cooperation that the three soft or hard of this device is different is used, can realize reliable sealed, the application of lower part steel ball, but prevent liquid to flow backwards.
Description
Technical field
The utility model is related to oilfield drilling and production technology field, more particularly to a kind of cement retainer.
Background technology
Middle-late Development Stages of Oil Fields In Other Countries returns the perforation of high above casing corrosion due to oil-well cement, and well cementing of cement section seepage occurs, makes
Oil reservoir flows into pit shaft adjacent to the stratum water of high pressure water layer, or oil reservoir energy declines neighbouring high pressure water layer and oil reservoir is mutually altered and causes oil well
Aqueous rising or reservoir water flooding, to oil field development exceptional hardship is brought.At present some produce OWs for many years, and long-term height contains
Water, in closing well state, analysis judges：One is that, through long-term exploitation, potential oil zone casing corrosion perforation, casing leakage causes oil
Layer water logging；Two is the long-term high pressure water injection of possible high-pressure water injection well, forms head cone with the well oil reservoir and in turn results in reservoir water flooding.Three
It is possible have high pressure water layer mutually to alter with oil reservoir near oil reservoir to cause reservoir water flooding.These wells are looked for by packer omit in printing except
The possibility of casing corrosion perforation leakage.Using radioisotope logging, find there is one mutual adjacent to high pressure water layer and oil reservoir in oil reservoir bottom
Alter, make the well all produce water.
In this case, conventional processing method is first to penetrate out engineering hole in high pressure water layer, then high pressure water layer is carried out
Chemical plugging --- mainly cement mortar closure.After having blocked cement plug is bored again and opened, then recover the exploitation of oil reservoir.But should
The production oil reservoir of well is on high pressure water layer and adjacent close, is not only carried in engineering construction using conventional method for blocking
Very big risk, and it is difficult to ensure that oil reservoir is not blocked by cement mortar, particularly stifled is squeezed to high pressure water layer, it is possible to occur high
The outer guttation mud of pressure water layer, makes to squeeze stifled failure.So enter instrument under only adopting separate in oil reservoir and high pressure water layer adjacent with it,
High pressure water layer is blocked again.
Cement retainer has been used many years, and traditional cement retainer adopts metal material, by drilling rod or
Oil pipe G.I.H, although conventional cement retainer good airproof performance, resistance to pressure reduction is high, Sealing period is long, it is also possible to milling, but
Liquid refluence is easily caused at work, and then damages equipment.
Utility model content
The purpose of this utility model is to overcome the shortcomings of above-mentioned technology, and provides a kind of cement retainer, prevents liquid
Flow backwards.
The utility model for achieving the above object, is employed the following technical solutions：A kind of cement retainer, it is characterised in that：
Including upper spine head, upper slipses, top shoe, upper cone, upper packing element, middle packing element, lower rubber cylinder, lower cone, sliding block, lower slipses, in
Heart pipe, lower spine head and steel ball；Be respectively equipped with ratchet the ring week of the upper and lower of the central tube, the upper spine head with it is described
The top of central tube coordinates, and the upper slipses are located at the bottom of the upper spine head, and the top shoe is located under the upper slipses
Portion simultaneously coordinates with the inclined-plane on upper slipses, the upper cone, upper packing element, middle packing element, lower rubber cylinder, lower cone be sequentially placed into it is described in
In the cannelure of heart pipe, the top of upper cone coordinates with the bottom of the top shoe；The bottom of the lower cone and the downslide
Block coordinates, and the top of the bottom of the sliding block and the lower slipses coordinates, the bottom of the lower slipses and the lower spine head
Top coordinates, and the lower spine head coordinates with the central tube bottom；Support base, the middle part band of support base are carried in the lower spine head
Have through hole, flowing hole carried around through hole, the steel ball is placed on the through hole, steel ball it is straight with diameter greater than the through hole
Footpath, the top of steel ball is provided with end cap, and end cap bottom is fixed with the lower spine head, and end cap top carries circular hole, and the diameter of circular hole is little
In the diameter of the steel ball.
Preferably, it is slidably matched between the end cap and the central tube, sealing ring is provided between the two.
The beneficial effects of the utility model are:Relative to prior art, the different packing element of three soft or hards of this device coordinates to be made
With, reliable sealing, the utilization of bottom steel ball can be realized, but prevent liquid from flowing backwards.
Description of the drawings
Fig. 1 is the structural representation that the utility model transfers state；
Fig. 2 is the structural representation of the utility model stationary state.
Specific embodiment
Below in conjunction with the accompanying drawings and preferred embodiment describes specific embodiment of the present utility model in detail.Such as Fig. 1 and Fig. 2 institutes
Show, a kind of cement retainer, including upper spine head 1, upper slipses 2, top shoe 3, upper cone 4, upper packing element 5, middle packing element 6, lower rubber cylinder
7th, lower cone 8, sliding block 9, lower slipses 10, central tube 11, lower spine head 12 and steel ball 13；The upper and lower of the central tube
Be respectively equipped with ratchet ring week, the upper spine head coordinates with the top of the central tube, that is to say, that upper spine head can pass through spine
Tooth be stuck in central tube it is upper not.The upper slipses are located at the bottom of the upper spine head, and the top shoe is located at the upper slipses
Bottom simultaneously coordinates with the inclined-plane on upper slipses, and top shoe is inserted into being strutted to upper slipses bottom and by upper slipses.The epicone
Body, upper packing element, middle packing element, lower rubber cylinder, lower cone are sequentially placed in the cannelure of the central tube, the top of upper cone with it is described
The bottom of top shoe coordinates, that is to say, that top shoe can downwards compress upper cone；The bottom of the lower cone and the downslide
Block coordinates, and the top of the bottom of the sliding block and the lower slipses coordinates, the bottom of the lower slipses and the lower spine head
Top coordinates, and lower slipses contact with lower spine head, and lower spine head withstands lower slipses.The lower spine head is matched somebody with somebody with the central tube bottom
Close, lower spine head is mutually sticked into central tube；Support base 14 is carried in the lower spine head, the middle part of support base carries through hole 15, leads to
Flowing hole 16 is carried around hole, the steel ball is placed on the through hole, the diameter with diameter greater than the through hole of steel ball, steel ball
Top be provided with end cap 17, end cap bottom is fixed with the lower spine head, and end cap top carries circular hole 18, and the diameter of circular hole is less than institute
State the diameter of steel ball.It is slidably matched between the end cap and the central tube, sealing ring is provided between the two.When upper spine head is moved down
When, upper slipses and top shoe are promoted, compress three packing elements.Realize setting.Meanwhile, upper slipses and lower slipses are moved outwards, and realize
Make card.Simultaneously, lower spine head carries out contrary action.
Three different packing elements of soft or hard of this device are used cooperatively, and can realize reliably sealing, the utilization of bottom steel ball, but
Liquid is prevented to flow backwards.
The above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of without departing from the utility model principle, some improvements and modifications can also be made, these improve and
Retouching also should be regarded as protection domain of the present utility model.
Claims (2)
1. a kind of cement retainer, it is characterised in that：Including upper spine head, upper slipses, top shoe, upper cone, upper packing element, middle glue
Cylinder, lower rubber cylinder, lower cone, sliding block, lower slipses, central tube, lower spine head and steel ball；The upper and lower of the central tube
It is respectively equipped with ratchet ring week, the upper spine head coordinates with the top of the central tube, and the upper slipses are located at the upper spine head
Bottom, the top shoe be located at the upper slipses bottom and with upper slipses on inclined-plane coordinate, the upper cone, upper packing element,
Middle packing element, lower rubber cylinder, lower cone are sequentially placed in the cannelure of the central tube, under the top of upper cone and the top shoe
Portion coordinates；The bottom of the lower cone coordinates with the sliding block, and the bottom of the sliding block is matched somebody with somebody with the top of the lower slipses
Close, the bottom of the lower slipses coordinates with the top of the lower spine head, and the lower spine head coordinates with the central tube bottom；It is described
Support base is carried in lower spine head, the middle part of support base carries through hole, and flowing hole is carried around through hole, and the steel ball is placed in described
On through hole, the diameter with diameter greater than the through hole of steel ball, the top of steel ball is provided with end cap, and end cap bottom is solid with the lower spine head
Fixed, end cap top carries circular hole, and the diameter of circular hole is less than the diameter of the steel ball.
2. cement retainer according to claim 1, it is characterised in that：Slide between the end cap and the central tube and match somebody with somebody
Close, sealing ring is provided between the two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621151839.6U CN206144517U (en) | 2016-10-31 | 2016-10-31 | Cement holds and stays ware |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621151839.6U CN206144517U (en) | 2016-10-31 | 2016-10-31 | Cement holds and stays ware |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206144517U true CN206144517U (en) | 2017-05-03 |
Family
ID=58622204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621151839.6U Expired - Fee Related CN206144517U (en) | 2016-10-31 | 2016-10-31 | Cement holds and stays ware |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206144517U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108035694A (en) * | 2018-01-03 | 2018-05-15 | 成都维泰油气能源技术有限公司 | A kind of cement retainer |
-
2016
- 2016-10-31 CN CN201621151839.6U patent/CN206144517U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108035694A (en) * | 2018-01-03 | 2018-05-15 | 成都维泰油气能源技术有限公司 | A kind of cement retainer |
| CN108035694B (en) * | 2018-01-03 | 2023-11-24 | 成都维泰油气能源技术有限公司 | Cement retainer |
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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: 20170503 Termination date: 20171031 |