CN2049262U - Small diameter compression packer - Google Patents
Small diameter compression packer Download PDFInfo
- Publication number
- CN2049262U CN2049262U CN 89201114 CN89201114U CN2049262U CN 2049262 U CN2049262 U CN 2049262U CN 89201114 CN89201114 CN 89201114 CN 89201114 U CN89201114 U CN 89201114U CN 2049262 U CN2049262 U CN 2049262U
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- Prior art keywords
- tubing
- packer
- packing element
- utility
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- Expired - Lifetime
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Abstract
The utility model relates to an underground tool for enveloping and partitioning oil layers, and is suitable for water injection wells whose casing tubes have light deformation. The utility model overcomes the defect that a tubing of the existing small diameter expanded packer needs certain pressure difference to be sealed. The utility model is characterized in that the upper and the lower end of one group of tubing are respectively provided with metallic protective umbrellas, and the metallic protective umbrella is vulcanized with the tubing together. When the packer takes base-sealing operation, the metallic protective umbrella can be unfolded with the tubing to protect the tubing, and the metallic protective umbrella can prevent the shoulder of the tubing from being stood out to improve the bearing ability of the tubing. A spacing ring is not arranged between the tubing of the packer, three tubing has the same hardness and forms entirety after the packer takes the base-sealing operation, so that the utility model enlarges the total volume of the tubing and ensures the sealing reliability of the packer.
Description
The present invention relates to a kind of sleeve in oil field slight deformation well and when seperated layer water injection, be used for the downhole tool of oil-separating layer.
The oil field is in the long-term production process, and the water injection well sleeve pipe is owing to the part well that influences of various factors deforms.Casing deformation is during to a certain degree, the distortion of part well just tends towards stability or the rate of strain gradual slow relatively, prove that according to 84 mouthfuls of distortion well statistics minimum latus rectum accounts for 90% of statistics sum greater than 100 millimeters well number, in order to recover the seperated layer water injection of sleeve pipe slight deformation well, will develop a cover minor diameter separate layer water injection string, wherein pony packer is one of down-hole important tool.Its key problem in technology is to solve the packing element sealing problem, because casing deformation wants to allow packer pass through deformation point, the steel body diameter will narrow down to 95 or 100 millimeters by 114 millimeters, " the sleeve pipe; the compression of packing element is apart from being increased to 50% by 20～30%, and the gap of packing element sealing is expanded 16 millimeters to by 2～6 millimeters that but still will allow packing element sealing 51/2.
The 475-10 type pony packer that uses on the oil field belongs to inflatable packer at present, its weak point is: need certain pressure reduction packing element could seal oil casing annular space inside and outside the oil pipe, when pressure oscillation, packer sealing is affected, cause between part well layer and the layer and gang up, directly influence the seperated layer water injection effect.
Patent Office of the People's Republic of China discloses a kind of compression pony packer on August 3rd, 88, and application number is 87215084, its but structure difference identical with purposes of the present invention, and the present invention has simple in structure, the metal coating umbrella that intensity is higher.
The objective of the invention is further to improve the separate layer water injection string of present sleeve pipe slight deformation well, and a kind of minor diameter compression packer is provided for overcoming the deficiency of existing 475-10 pony packer.
This packer is made up of packing element and steel body two big parts, and it is characterized in that: the upper and lower end at one group of packing element respectively has a umbrella, and three packing element hardness are identical.
Accompanying drawing 1 is a minor diameter compression packer structural representation.
This packer steel body component is by upper and lower joint (1), (23), adjustable ring (2), baffle ring (3), umbrella (4), upper and lower central tube (5), (16), set piston (9), piston bush (12), transition joint (13), dummy piston (14), minor adjustment ring (15), clip spring seat (17), jump ring (18), deblocking pin (19), jump ring cover (20), set pin (21), protection ring (22), O RunddichtringO (8), (10), (11) form.
The packing element parts are made up of middle packing element (6), upper and lower packing element (7).
Steel body component structural principle of the present invention is a prior art, and just the steel body diameter narrows down to 95 millimeters, 100 millimeters two kinds by former 114 millimeters, and the principal character of this kind packer is that the upper/lower terminal at one group of packing element respectively has a metal coating umbrella.
Fig. 2 is the umbrella front view
Fig. 3 is the umbrella top view
Fig. 4 is the umbrella expanded view
This umbrella adopts 1 millimeters thick corrosion resistant plate to utilize the mould compacting to form, and has 6 at circumference and cuts off mouth, and 6 sheet partial stacks become bowl-shape, and sulfide with packing element, make it to be close to before going into the well the packing element upper and lower end.
This packer another feature is that three packing element hardness are identical, does not have spacer ring between the packing element, and the contact surface and the horizon angle of cut are 6 ° between packing element.
During use; form suspension type water distribution tubing string by safety joint, minor diameter compression packer and 4 " eccentric injection mandrel, bottom well-flushing valve and 21/2 " antisepsis oil pipe; when tubing string down after give the depthkeeping degree; pressurize from oil pipe; pressure promotes to set piston (9), reaches two dummy pistons (14) through three pressure guide hole of central tube; set pin (21) and cut off this moment; the compression packing element; make the packing element diameter become big; umbrella is spreading thereupon; be used for protecting packing element, prevent that the packing element shoulder is outstanding, and can improve the bearing capacity of packing element.During packer setting, deblocking pin (19) does not bear high pressure, setting the back packing element pins by jump ring (18), prevent that packing element from returning, there is not spacer ring between the identical and packing element of three packing element hardness, set the back packing element and form a whole, increased Seal Oil, sleeve pipe annular space packing element cumulative volume, more help the minor diameter packing element and seal big sleeve pipe.
During the packer deblocking, the upper lifting pipe post, drive on the upper and lower central tube of packer (5), (16) and move, produce relative displacement because packing element makes between packing element and other relevant parts and the upper and lower central tube with frictional force effect between the casing wall this moment, break deblocking pin (19), the packer deblocking can trip out tubing string smoothly.
What the present invention had overcome that the minor diameter expanding type packer exists can not amplify arbitrarily the shortcoming that water is chewed water filling, has strengthened the water injection rate of casing deformation well less permeable layer. This packing element upper and lower end has umbrella and packing element to sulfide simultaneously, has improved the bearing capacity of packing element, and this packing element can bear the pressure reduction of 15MPa, and umbrella also can play the protection packing element, prevent the effect that the packing element shoulder is outstanding. Three packing element hardness of this packer are identical, do not have spacer ring between the packing element, increased the total volume of packing element, improved the reliability of pony packer sealing oil casing annular space.
Claims (2)
- Be used for separating the downhole tool of oil reservoir when 1, the minor diameter compression packer is the seperated layer water injection of sleeve in oil field slight deformation well; it is made up of packing element and steel body two big parts; it is characterized in that: the upper and lower end at one group of packing element respectively has a metal coating umbrella, and three packing element hardness are identical.
- 2, as the said packer of claim 1, it is characterized in that: umbrella forms bowl-shape with the mould compacting, have 6 and cut off mouth on circumference, and 6 sheet partial stacks become bowl-shape, and sulfide with packing element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89201114 CN2049262U (en) | 1989-01-24 | 1989-01-24 | Small diameter compression packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89201114 CN2049262U (en) | 1989-01-24 | 1989-01-24 | Small diameter compression packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2049262U true CN2049262U (en) | 1989-12-13 |
Family
ID=4859077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89201114 Expired - Lifetime CN2049262U (en) | 1989-01-24 | 1989-01-24 | Small diameter compression packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2049262U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102031941A (en) * | 2010-11-19 | 2011-04-27 | 大庆月生禾科技开发有限公司 | Steel protection umbrella type sealer |
| CN102787821A (en) * | 2011-05-20 | 2012-11-21 | 贵阳高新隆硕氟材料有限公司 | Plane arch-shaped seal rubber drum |
| CN102787822A (en) * | 2011-05-20 | 2012-11-21 | 贵阳高新隆硕氟材料有限公司 | Large-radian arched sealing rubber barrel |
| CN107724992A (en) * | 2017-11-27 | 2018-02-23 | 李明 | One kind can desealed water-swelling packer |
| CN110735611A (en) * | 2019-11-12 | 2020-01-31 | 四机赛瓦石油钻采设备有限公司 | air-tight seal packer sealing assembly |
| CN117967220A (en) * | 2024-03-28 | 2024-05-03 | 松原市金信石油技术服务有限公司 | Oil layer protection tool for hot washing circulation valve |
-
1989
- 1989-01-24 CN CN 89201114 patent/CN2049262U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102031941A (en) * | 2010-11-19 | 2011-04-27 | 大庆月生禾科技开发有限公司 | Steel protection umbrella type sealer |
| CN102787821A (en) * | 2011-05-20 | 2012-11-21 | 贵阳高新隆硕氟材料有限公司 | Plane arch-shaped seal rubber drum |
| CN102787822A (en) * | 2011-05-20 | 2012-11-21 | 贵阳高新隆硕氟材料有限公司 | Large-radian arched sealing rubber barrel |
| CN107724992A (en) * | 2017-11-27 | 2018-02-23 | 李明 | One kind can desealed water-swelling packer |
| CN110735611A (en) * | 2019-11-12 | 2020-01-31 | 四机赛瓦石油钻采设备有限公司 | air-tight seal packer sealing assembly |
| CN117967220A (en) * | 2024-03-28 | 2024-05-03 | 松原市金信石油技术服务有限公司 | Oil layer protection tool for hot washing circulation valve |
| CN117967220B (en) * | 2024-03-28 | 2024-06-04 | 松原市金信石油技术服务有限公司 | Oil layer protection tool for hot washing circulation valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |