CN203961908U - Concentric type is produced pressure transfering appts - Google Patents
Concentric type is produced pressure transfering appts Download PDFInfo
- Publication number
- CN203961908U CN203961908U CN201420369207.1U CN201420369207U CN203961908U CN 203961908 U CN203961908 U CN 203961908U CN 201420369207 U CN201420369207 U CN 201420369207U CN 203961908 U CN203961908 U CN 203961908U
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- pressure
- inner chamber
- chamber
- main body
- concentric type
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Abstract
The utility model provides a kind of concentric type to produce pressure transfering appts, comprise main body, in main body, offer vertically inner chamber, the upper end of inner chamber is open, lower end closed, in main body wall, also run through and be provided with the pressure transmission passage be arrangeding in parallel with inner chamber, in inner chamber, be provided with packer assembly, the sidewall of packer assembly and inner chamber can link together discretely, inner chamber is divided into the pressure-releasing chamber of build the pressure chamber and the bottom on top by packer assembly, by the build the pressure pressure-driven packer assembly in chamber and the sidewall of inner chamber of control, be separated, on the sidewall of pressure-releasing chamber, along it, be radially penetrated with inlet opening, inlet opening is not communicated with mutually with pressure transmission passage.Concentric type of the present utility model is produced pressure transfering appts, steel ball is resisted against on sliding sleeve by the pretightning force of spring, guaranteed when pressure transmits and the abundant sealing of steel ball sliding sleeve, because the inner chamber of main body is feed liquor main channel, in recovery process, there will not be because of sand production or the well situation that causes water blocked switch to block such as dirty.
Description
Technical field
The utility model is relevant for a kind of production pressure transfering appts, and especially a kind of concentric type for oil exploitation is produced pressure transfering appts.
Background technology
In the recovery process of oil-field thick-oil block septulum layer high watercut layer, adopt the water plugging string of adopting under envelope to realize water blockoff and production function, because sand production is numerous with inspection pumping frequency, the water plugging string of adopting under envelope adopts releasing type tubing string more, tubular column structure is followed successively by from top to bottom plug+K341 long packing element packer+side direction list and stays valve+back-off packer to form, and top adopts tubing pump exploitation.The critical component of this tubing string is that side direction list stays valve, and it can transfer the pressure to lower packer and guarantee that K341 long packing element packer sets demand, makes can also meet after packer setting the demand of viscous crude feed liquor.
As shown in Figure 1, this side direction list stays valve to comprise the tubulose connector 2 of hollow, the two ends of connector 2 connect respectively top connection 6, lower contact 1, lower contact 1 can be connected with K341 long packing element packer, pressure is by top connection 6, connector 2, the inner chamber of lower contact 1 is passed to K341 long packing element packer sets it, the tube wall of lower contact 1 is provided with a switch ball seat 3, switch ball seat 3 is provided with a steel ball 9, the outer feed liquor cylinder sleeve 5 that is arranged with of connector 2, fuel feed hole 8 on feed liquor cylinder sleeve 5 and the intracavity inter-connection of switch ball seat 3, and further with the intracavity inter-connection of connector 2 so that viscous crude feed liquor.But often find during field conduct, existing side direction list stays valve frequent appearance when tubing string sets singly to stay valve leakage not play pressure, packer does not set or recovery process is exploited because side direction list stays the little impact of valve passage, reduces oil well pump detection period.
The another kind of prior art is for water blocked switch---the oil field well uniflow eccentric water blocking switch of oil well water blockoff, it is by lower contact, central tube, switch ball seat, limiting piston, overcoat, top connection and switch ball form, central tube one end is connected with lower contact, the other end of central tube is connected with top connection, overcoat is enclosed within the outside of central tube, between the inwall of overcoat and the outer wall of central tube, there is annular space, the switch ball seat of annular is arranged in annular space and annular space and is divided into upper annular space and lower annular space, pressed on ring is provided with in the air can be at the annular limiting piston of pressed on ring aerial sliding, switch ball is arranged between hole and trim ring, because liquid can only sequential flow via hole, behind hole and hole, flow in central tube and can not in central tube, flow out, so this switch can be realized single current water blockoff function easily, but this device also exists switch ball seat and ball to set when tight tubing string and does not rise and press and the problem such as feed pathway is little.
Although above-mentioned prior art can meet production function, and can transfer the pressure to lower packer, but it is not tight all to exist ball seat and ball to set, while setting, tubing string does not play pressure, or because feed pathway is little, if recovery process sand production or well are dirty, may will singly stay valve to block impact exploitation.
Utility model content
The purpose of this utility model is to provide a kind of concentric type and produces pressure transfering appts, the problem that the ball seat that prior art exists sets sternly with ball to solve, singly stay valve easily to block in recovery process.
For solving above-mentioned purpose, the utility model provides a kind of concentric type to produce pressure transfering appts, comprise main body, in described main body, offer vertically inner chamber, the upper end of described inner chamber is open, lower end closed, in described main body wall, also run through and be provided with the pressure transmission passage be arrangeding in parallel with described inner chamber, in described inner chamber, be provided with packer assembly, the sidewall of described packer assembly and described inner chamber can link together discretely, described inner chamber is divided into the pressure-releasing chamber of build the pressure chamber and the bottom on top by described packer assembly, sidewall by packer assembly described in the pressure-driven in the chamber that builds the pressure described in controlling and described inner chamber is separated, on the sidewall of described pressure-releasing chamber, along it, be radially penetrated with inlet opening, described inlet opening is not communicated with mutually with described pressure transmission passage.
Concentric type as above is produced pressure transfering appts, wherein, described packer assembly comprises the sliding sleeve being connected discretely with described lumen side wall energy, described sliding sleeve and described intracavity sidewall sealed engagement, described sliding sleeve upper port place is provided with a steel ball, between described steel ball and the upper end of described inner chamber, contact has a spring, the upper port sealed engagement of described steel ball and described sliding sleeve.
Concentric type as above is produced pressure transfering appts, and wherein, described sliding sleeve and described intracavity sidewall are fixedly connected by destroying pin.
Concentric type as above is produced pressure transfering appts, and wherein, the upper end of described inner chamber is fixed with a gear cap, and described gear cap is provided with the through hole being connected with the described chamber that builds the pressure, and described spring top is butted between described gear cap and described steel ball.
Concentric type as above is produced pressure transfering appts, and wherein, the end face that described sliding sleeve contacts described steel ball is taper surface, and the upper end diameter of described taper surface is greater than its lower end diameter.
Concentric type as above is produced pressure transfering appts, and wherein, the upper end of described main body is connected with a top connection, and the lower end of described main body is connected with a lower contact.
Concentric type as above is produced pressure transfering appts, and wherein, described pressure-releasing chamber bottom is concaved with a V-type groove downwards.
Concentric type as above is produced pressure transfering appts, wherein, between described packer assembly and described intracavity sidewall, is provided with sealing ring.
Compared with prior art, feature and the advantage of concentric type production pressure transfering appts of the present utility model are:
1, concentric type of the present utility model is produced pressure transfering appts, sliding sleeve and steel ball are located in the main channel inner chamber of main body, steel ball is resisted against on sliding sleeve by the pretightning force of spring, the abundant sealing of steel ball and sliding sleeve while having guaranteed pressure transmission, pressure transmission hole is located on the sidewall of main body for transferring the pressure to lower packer, lower packer is set; In addition, because the main channel inner chamber of main body is feed pathway, in recovery process, there will not be because of sand production or the well situation that causes water blocked switch to block such as dirty.
2, concentric type of the present utility model is produced pressure transfering appts, employing is destroyed pin sliding sleeve and main body wall is fixedly connected, pressure in the chamber that builds the pressure reaches after certain value, destroying pin is interrupted, steel ball and sliding sleeve fall into the bottom of pressure-releasing chamber, to avoid steel ball and sliding sleeve to block fluid, flow in main body inner chamber; In addition, by being arranged with a V-type groove in pressure-releasing chamber bottom, the impact force while coming buffering sliding-casing to fall.
Accompanying drawing explanation
The following drawings is only intended to the utility model to schematically illustrate and explain, does not limit scope of the present utility model.Wherein,
Fig. 1 is the schematic diagram that the side direction list of prior art stays valve;
Fig. 2 is the schematic diagram that concentric type of the present utility model is produced pressure transfering appts.
Critical element label declaration:
1 lower contact 2 connector 3 switch ball seats
5 feed liquor cylinder sleeve 6 top connection 8 fuel feed holes
9 steel balls
10 main body 11 pressure transmission holes 12 chamber that builds the pressure
13 pressure-releasing chamber 14 inlet openings 15 interrupt pin
20 sliding sleeve 21 steel ball 22 springs
23 gear cap 25 sealing rings
30 top connection 31 staples
40 lower contact 41 staples
The specific embodiment
For technical characterictic of the present utility model, object and effect being had more clearly, understand, now contrast accompanying drawing the specific embodiment of the present utility model is described.
As shown in Figure 2, the utility model provides a kind of concentric type to produce pressure transfering appts, for feed liquor and the pressure transmission of recovering the oil, this concentric type is produced pressure transfering appts and is comprised main body 10, in main body 10, offer vertically inner chamber, using as feed pathway, the upper end of inner chamber is open, lower end closed, on main body 10 sidewalls, also run through and be provided with the pressure transmission passage 11 be arrangeding in parallel with inner chamber, for transmission of pressure, in inner chamber, be provided with packer assembly, the sidewall of packer assembly and inner chamber can link together discretely, inner chamber is divided into the pressure-releasing chamber 13 of the 12He bottom, chamber that builds the pressure on top by packer assembly, the chamber 12 that builds the pressure is connected for pressing system with outside, supply pressing system to chamber 12 and pressure transmission passage 11 discharge pressures of building the pressure, by outside, supply pressing system to control to build the pressure the pressure-driven packer assembly in chamber 12 and the sidewall of inner chamber to be separated, on the sidewall of pressure-releasing chamber 13, along it, be radially penetrated with inlet opening 14, inlet opening 14 is not communicated with mutually with pressure transmission passage 11.Wherein, between packer assembly and intracavity sidewall, be provided with sealing ring 25, so that packer assembly and intracavity sidewall phase sealed engagement.After packer assembly and intracavity sidewall are separated, build the pressure chamber 12 and pressure-releasing chamber 13 are connected, and oil reservoir liquid just enters pressure-releasing chamber 13 by inlet opening 14, then enters oil pipe by the chamber 12 that builds the pressure, and by top oil well pump, returns out ground.
In specific embodiment as shown in Figure 2, packer assembly comprises the sliding sleeve 20 being connected discretely with lumen side wall energy, sliding sleeve 20 and intracavity sidewall sealed engagement, sliding sleeve 20 upper port places are provided with a steel ball 21, between steel ball 21 and the upper end of inner chamber, contact has a spring 22, so that the upper port sealed engagement of steel ball 21 and sliding sleeve 20, in addition, this packer assembly can also play single current function in the process of going into the well, simultaneously because sliding sleeve 20 is hollow structure, in the process of going into the well, tubing string buoyancy is little, can not affect lower pipe speed.By spring 20, steel ball 21 is resisted against on the sliding sleeve 20 of hollow, make to produce pretightning force between steel ball 21 and sliding sleeve 20, thereby the steel ball 21 that effectively solves prior art existence sets not tight problem with sliding sleeve 20, in addition, between sliding sleeve 20 and intracavity sidewall, be provided with sealing ring 25, the sealing in the chamber 12 that further guaranteed to build the pressure when pressure transmits.
Wherein, the end face of sliding sleeve 20 contact steel balls 21 is taper surface, and the upper end diameter of taper surface is greater than its lower end diameter.By the end face of sliding sleeve 20 is designed to taper surface, be conducive to the abundant sealing of steel ball 21 and sliding sleeve 20.
In a feasible technical scheme, sliding sleeve 20 is fixedly connected by destroying pin 15 with intracavity sidewall, so that sliding sleeve 20 is being destroyed after pin 15 is interrupted and can be separated from each other with intracavity sidewall, but not as limit, sliding sleeve 20 also can separated connected mode be connected by other with intracavity sidewall.
In addition, the upper end of inner chamber is fixed with a gear cap 23, and gear cap 23 is provided with the through hole being connected with the chamber 12 that builds the pressure, and spring 22 is resisted against between gear cap 23 and steel ball 21.By gear cap 23 is set, carry out retainer spring 22, offer through hole and flowed out by the chamber 12 that builds the pressure with feeder pay liquid on gear cap 23, wherein the shape of through hole can be circular hole, square opening etc., and the arrangement mode of through hole also can arrange according to actual needs.In the present embodiment, gear cap 23 is threaded mutually with main body 10 intracavity sidewalls.
Again as shown in Figure 2, the upper end of main body 10 is connected with a top connection 30, and the lower end of main body 10 is connected with a lower contact 40, and main body 10 all adopts and is threaded with lower contact 40, and by staple 31, staple 41, fixed respectively with top connection 30, main body 10.
During use, on top, suppress, pressure is delivered to build the pressure 12 pairs, chamber steel ball 21 and sliding sleeve 20 generation pretightning forces, simultaneously pressure is delivered to lower packer by pressure transmission passage 11, when upper and lower part packer reaches while setting pressure, continues to suppress for example 2MPa-3MPa, interrupting pin 15 is interrupted, sliding sleeve 20, steel ball 21 and spring 22 all fall into the bottom of pressure-releasing chamber 13, and oil reservoir liquid just enters in main body 10 inner chambers by inlet opening 14, then enter oil pipe and be plucked out of.By being arranged with a V-type groove downwards in pressure-releasing chamber 13 bottoms, whereabouts element is played to cushioning effect.In the present embodiment, the diameter of main body 10 inner chambers is 60mm, the aperture of pressure transmission passage 11 is 10mm, sprue using main body 10 inner chambers as oil reservoir liquid, can effectively avoid conventional side direction list to stay valve and singly stay eccentric water blocked switch etc. not fall because of steel ball and ball seat, steel ball mobile space is limited, and the later stage grains of sand, foul etc. enter the situation that easily causes runner to block.
Concentric type of the present utility model is produced pressure transfering appts and is not only applicable to heavy oil wells, also (high solidifying oil refers to that freezing point is more than 40 ℃ to be applicable to thin oil well, high-solidifiability oil well, the crude oil that paraffin content is high), also can be applicable to the exploitation of the oil wells such as high angle hole and horizontal well simultaneously.
The foregoing is only the schematic specific embodiment of the utility model, not in order to limit scope of the present utility model.Any those skilled in the art, is not departing from equivalent variations and the modification of doing under the prerequisite of design of the present utility model and principle, all should belong to the scope of the utility model protection.And it should be noted that, each ingredient of the present utility model is not limited in above-mentioned overall applicability, each technical characterictic of describing in manual of the present utility model can select one to adopt separately or select the multinomial use that combines according to actual needs, therefore, the utility model has been contained other combination relevant with this case inventive point and specifically application in the nature of things.
Claims (8)
1. a concentric type is produced pressure transfering appts, it is characterized in that, described concentric type is produced pressure transfering appts and is comprised main body, in described main body, offer vertically inner chamber, the upper end of described inner chamber is open, lower end closed, in described main body wall, also run through and be provided with the pressure transmission passage be arrangeding in parallel with described inner chamber, in described inner chamber, be provided with packer assembly, the sidewall of described packer assembly and described inner chamber can link together discretely, described inner chamber is divided into the pressure-releasing chamber of build the pressure chamber and the bottom on top by described packer assembly, sidewall by packer assembly described in the pressure-driven in the chamber that builds the pressure described in controlling and described inner chamber is separated, on the sidewall of described pressure-releasing chamber, along it, be radially penetrated with inlet opening, described inlet opening is not communicated with mutually with described pressure transmission passage.
2. concentric type as claimed in claim 1 is produced pressure transfering appts, it is characterized in that, described packer assembly comprises the sliding sleeve being connected discretely with described lumen side wall energy, described sliding sleeve and described intracavity sidewall sealed engagement, described sliding sleeve upper port place is provided with a steel ball, between described steel ball and the upper end of described inner chamber, contact has a spring, the upper port sealed engagement of described steel ball and described sliding sleeve.
3. concentric type as claimed in claim 2 is produced pressure transfering appts, it is characterized in that, described sliding sleeve and described intracavity sidewall are fixedly connected by destroying pin.
4. concentric type as claimed in claim 2 is produced pressure transfering appts, it is characterized in that, the upper end of described inner chamber is fixed with a gear cap, and described gear cap is provided with the through hole being connected with the described chamber that builds the pressure, and described spring top is butted between described gear cap and described steel ball.
5. concentric type as claimed in claim 2 is produced pressure transfering appts, it is characterized in that, the end face that described sliding sleeve contacts described steel ball is taper surface, and the upper end diameter of described taper surface is greater than its lower end diameter.
6. concentric type as claimed in claim 1 is produced pressure transfering appts, it is characterized in that, the upper end of described main body is connected with a top connection, and the lower end of described main body is connected with a lower contact.
7. concentric type as claimed in claim 1 is produced pressure transfering appts, it is characterized in that, described pressure-releasing chamber bottom is concaved with a V-type groove downwards.
8. concentric type as claimed in claim 1 is produced pressure transfering appts, it is characterized in that, between described packer assembly and described intracavity sidewall, is provided with sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420369207.1U CN203961908U (en) | 2014-07-04 | 2014-07-04 | Concentric type is produced pressure transfering appts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420369207.1U CN203961908U (en) | 2014-07-04 | 2014-07-04 | Concentric type is produced pressure transfering appts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203961908U true CN203961908U (en) | 2014-11-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420369207.1U Withdrawn - After Issue CN203961908U (en) | 2014-07-04 | 2014-07-04 | Concentric type is produced pressure transfering appts |
Country Status (1)
| Country | Link |
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| CN (1) | CN203961908U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110235A (en) * | 2014-07-04 | 2014-10-22 | 中国石油天然气股份有限公司 | Concentric type production pressure transmission device |
-
2014
- 2014-07-04 CN CN201420369207.1U patent/CN203961908U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110235A (en) * | 2014-07-04 | 2014-10-22 | 中国石油天然气股份有限公司 | Concentric type production pressure transmission device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141126 Effective date of abandoning: 20160831 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |