CN204113197U - Barrier film inflatable packer - Google Patents
Barrier film inflatable packer Download PDFInfo
- Publication number
- CN204113197U CN204113197U CN201420536111.XU CN201420536111U CN204113197U CN 204113197 U CN204113197 U CN 204113197U CN 201420536111 U CN201420536111 U CN 201420536111U CN 204113197 U CN204113197 U CN 204113197U
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- CN
- China
- Prior art keywords
- cartridge
- fixed cover
- barrier film
- urceolus
- top connection
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Abstract
The utility model relates to a kind of barrier film inflatable packer, it is characterized in that: center, top connection one end has been threaded central tube, described top connection excircle is bolted with urceolus, described central tube is set with fixed cover, described fixed cover lower end is connected with cartridge, described cartridge is connected with lower contact, described top connection inner chamber is provided with setting barrier film, described urceolus lower end is provided with deblocking barrier film, control sliding sleeve is provided with between described fixed cover and urceolus, between described central tube and fixed cover, control between sliding sleeve interlude and fixed cover and between cartridge and central tube, be respectively equipped with the pressure fluid space expanding cartridge.Beneficial effect: adopt membrane configuration, makes wellbore fluid and pressure liquid separately, prevents corrosion and fouling from causing removing seal for packer difficulty or losing efficacy.Adopt and control sliding sleeve and one way valve modular design, in oil pipe, pressure is still reliably setting after reducing, and can also prevent pressure fluctuation from causing the unexpected deblocking of packer.
Description
Technical field
The utility model belongs to the downhole packer in oil field, particularly relates to a kind of barrier film inflatable packer being applicable to crude oil exploitation and water injection technology.
Background technology
Packer is that crude oil is exploited and a kind of downhole tool conventional in water injection technology.Annular space between oil pipe and sleeve pipe is separated by cartridge, so that exploit the crude oil of Different Strata and water under high pressure injected specific stratum to drive crude oil flow (being commonly called as setting).Existing packer is different by cartridge mode of texturing during sealing, is divided into compression packer and inflatable packer.Compression packer mainly rely on connected pipes on put and put mechanical movement, cartridge is carried out axial compression, makes cartridge enlarged outside diameter realize packing function; Inflatable packer mainly utilizes highly pressurised liquid that cartridge internal pressure is increased and produces distortion, and external diameter increases, and realizes packing function.Compression packer needs to utilize large-scale equipment to promote whole tubing string and transfers, and operating cost is high.Inflatable packer utilizes the existing process pipelines in oil field or pump truck can complete setting deblocking process, is thus widely used.But, because inflatable packer major part does not have auto-lock function, in pit shaft, during pressure oscillation, unexpected deblocking can be caused.More seriously: in pit shaft, liquid is generally sewage, formation fluid or oil-water mixture, to packer inner body seriously corroded.Owing to working in down-hole liquid for a long time, the easy fouling in each surface of inner body, after long-term corrosion and fouling, inner body lost efficacy or relative motion be obstructed, cause removing seal for packer difficulty or can not deblocking.Therefore, job site can only adopt increase lift power to carry out destructive deblocking, and cause cartridge to come off in shaft bottom, salvage difficulty, operating cost is high.Number of patent application: 201320760366.X discloses a kind of inflatable packer, the bottom of top connection is connected with the top of interior pipe, cartridge top connection, expansion cartridge, be set with on inner pipe after cartridge lower contact links into an integrated entity, the top of cartridge top connection is connected with the bottom of top connection, the bottom of interior pipe is connected with the top of connector, the bottom of cartridge lower contact is made to be enclosed within connector, the bottom of connector is connected with the top of lower contact, the side of connector is provided with linked hole, linked hole is by the expansion inner chamber of cartridge and the inside UNICOM of connector, before the bottom of connector is connected with the top of lower contact, screen casing is placed in the bottom of connector, the lower internal thread of cartridge lower contact connects gear cap, the internal diameter of gear cap is less than the upper diameter of connector, screen casing has sieve seam, sieve seam is by interior pipe and linked hole UNICOM, the bottom of screen casing is spacing by the inner circular bead of lower contact, screen casing has sieve seam, sand and foreign material can be stopped, injection channel can not be blocked by sand and foreign material, cartridge can normal expansion and contraction.This technology still can not solve corrosion and the scale problems of packer inner body.A kind of packer that well liquid is separated with pressure liquid barrier film is is urgently researched and developed in crude oil exploitation, can avoid corrosion and the fouling of packer inner body, prolongation packer application life.
Utility model content
The utility model is to overcome deficiency of the prior art, a kind of barrier film inflatable packer is provided, pressure is expanded cartridge by non-corrosiveness pressure liquid, realize packing function, well liquid is separated by barrier film with pressure liquid, corrosion and the fouling of packer inner body can be avoided, extend packer application life.
The utility model for achieving the above object, be achieved through the following technical solutions, a kind of barrier film inflatable packer, it is characterized in that: comprise top connection, setting barrier film, fixed cover, control sliding sleeve, urceolus, central tube and cartridge, center, described top connection one end has been threaded central tube, described top connection excircle is bolted with urceolus, described central tube is set with fixed cover, described fixed cover lower end is connected with cartridge, described cartridge is connected with lower contact, described top connection, urceolus, central tube, cartridge and lower contact connect and compose packer body successively, described top connection inner chamber is provided with setting barrier film, is full of pressure liquid in setting barrier film, and described top connection right end is provided with the oil duct of axis and urceolus inner space, and described outer tube rear end is provided with deblocking barrier film, is full of pressure liquid in the cavity between deblocking barrier film and urceolus, control sliding sleeve is provided with between described fixed cover and urceolus, described control sliding sleeve two ends and fixed cover are slipper seal, between described central tube and fixed cover, control to be respectively equipped with the pressure fluid space expanding cartridge between sliding sleeve interlude and fixed cover and between cartridge and central tube, described fixed cover radial direction is provided with the left and right oil duct be communicated with the pressure fluid space expanding cartridge, described urceolus follower head is axially arranged with the oil duct be communicated with deblocking membrane lumen.
Be provided with middle oil duct between described left and right oil duct, described middle oil duct is provided with the one way valve keeping pressure.
The oil duct quantity of described top connection axis is 1-3.
Beneficial effect: compared with prior art, the utility model adopts membrane configuration, makes wellbore fluid and pressure liquid separately, prevents corrosion and fouling from causing removing seal for packer difficulty or losing efficacy.Adopt and control sliding sleeve and one-way valve designs, prevent the unexpected deblocking of the low rear packer of internal drop.Well liquid and pressure liquid barrier film are separated, avoids corrosion and the fouling of packer inner body, extend packer application life, eliminate the problem of removing seal for packer difficulty, make that deblocking becomes simply, cost is low.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
In figure: 1-top connection; 2-setting barrier film; 3-oil duct; 4-fixed cover, the left oil duct of 4-1-, the right oil duct of 4-2-, oil duct in the middle of 4-3-, 4-4-one way valve; 5-oil duct, 6-lower contact, 7-control sliding sleeve; 8-urceolus; 9-deblocking barrier film; 10-central tube; 11-packing element.
Detailed description of the invention
Below in conjunction with preferred embodiment, to the detailed description of the invention provided according to the utility model, details are as follows: embodiment
Refer to accompanying drawing, a kind of barrier film inflatable packer, comprise, lower contact 1, 6, setting barrier film 2, fixed cover 4, control sliding sleeve 7, urceolus 8, central tube 10 and cartridge 11, one end of top connection 1 is connected with shaft column (not shown), the lower contact other end connects shaft column, center, described top connection one end has been threaded central tube, described top connection external peripheral threads is connected with urceolus, described central tube is set with fixed cover 4, described fixed cover lower end is connected with cartridge 11, described cartridge is connected with lower contact 6, described top connection, urceolus, central tube, cartridge and lower contact connect and compose packer body successively, described top connection inner chamber is provided with setting barrier film 2, is full of pressure liquid in setting barrier film, and described top connection right end is axially arranged with the oil duct 3 with urceolus inner space, and the oil duct quantity of described top connection axis is 1-3.Described outer tube rear end is provided with deblocking barrier film 9, is full of pressure liquid in the cavity between deblocking barrier film and urceolus; Control sliding sleeve is provided with between described fixed cover and urceolus, described control sliding sleeve two ends and fixed cover are slipper seal, between described central tube and fixed cover, control to be respectively equipped with the pressure fluid space expanding cartridge between sliding sleeve interlude and fixed cover and between cartridge and central tube, described fixed cover radial direction is provided with left and right oil duct 4-1,4-2 of being communicated with the pressure fluid space expanding cartridge; Described urceolus follower head is axially arranged with the oil duct 5 be communicated with deblocking membrane lumen.Be provided with middle oil duct 4-3 between described left and right oil duct, described middle oil duct is provided with the one way valve 4-4 keeping pressure.
Operating principle:
The sewage that setting barrier film and deblocking barrier film are used in barrier wells, prevents the generation of the fouling of packer inside parts or corrosion phenomenon.The chamber inner pressurising power liquid of setting barrier film and deblocking barrier film, replaces sewage to carry out setting or deblocking.
1, setting procedure
Tubing string inside is suppressed, setting diaphragm deflection, and pressure liquid promotes to control sliding sleeve and moves downward, and left oil duct 4-1 and right oil duct 4-2 disconnects, and pressure liquid enters cartridge inner chamber by middle oil duct 4-3 and right oil duct 4-2, and cartridge expansion realizes setting.Due to the effect of one way valve in middle oil duct 4-3, can pressurize be realized, though in tubing string pressure reduce also can not deblocking, make setting more reliable.Setting simple and reliable.Only need suppress with on-the-spot waterflood-transmission line or pump truck to realize setting, and operation is simple.Because pressure liquid has ball-and-seat to control, setting effect can not be affected because of the change of well cylinder pressure.
2, deblocking process
Annular space between o exterior and sleeve pipe is suppressed, deblocking diaphragm deflection, and pressure liquid promotes to control sliding sleeve and moves upward, left oil duct 4-1 is communicated with right oil duct 4-2, oil flows out cartridge inner chamber by left oil duct 4-1 and right oil duct 4-2, and cartridge is shunk under external pressure, completes deblocking.
Only need suppress to the annular space between tubing string and sleeve pipe during deblocking and get final product deblocking, and easily can realize gradually deblocking, namely after the removing seal for packer of upper strata, pressure transmits toward lower floor's packer, thus realizes gradually deblocking.Can major path well-flushing and repeatedly setting.Solution annular space of being honored as a queen between packer and sleeve pipe is very large, can well-flushing very easily, can be repeatedly setting after well-flushing completes, and than packer that can not be repeatedly setting, operating cost significantly reduces.
Above-mentioned detailed description of this kind of barrier film inflatable packer being carried out with reference to embodiment; illustrative instead of determinate; several embodiments can be listed according to institute's limited range; therefore in the change do not departed under the utility model patent general plotting and amendment, within the protection domain that should belong to the utility model patent.
Claims (3)
1. a barrier film inflatable packer, it is characterized in that: comprise top connection, setting barrier film, fixed cover, control sliding sleeve, urceolus, central tube and cartridge, center, described top connection one end has been threaded central tube, described top connection excircle is bolted with urceolus, described central tube is set with fixed cover, described fixed cover lower end is connected with cartridge, described cartridge is connected with lower contact, and described top connection, urceolus, central tube, cartridge and lower contact connect and compose packer body successively; Described top connection inner chamber is provided with setting barrier film, and setting membrane lumen is full of pressure liquid, and described top connection right end is axially arranged with the oil duct with urceolus inner space, and described urceolus lower end is provided with deblocking barrier film, is full of pressure liquid in the cavity between deblocking barrier film and urceolus; Control sliding sleeve is provided with between described fixed cover and urceolus, described control sliding sleeve two ends and fixed cover are slipper seal, between described central tube and fixed cover, control to be respectively equipped with the pressure fluid space expanding cartridge between sliding sleeve interlude and fixed cover and between cartridge and central tube, described fixed cover radial direction is provided with the left and right oil duct be communicated with the pressure fluid space expanding cartridge; Described urceolus lower end is axially arranged with the oil duct be communicated with deblocking membrane lumen.
2. barrier film inflatable packer according to claim 1, is characterized in that: be provided with middle oil duct between described left and right oil duct, and described middle oil duct is provided with the one way valve keeping pressure.
3. barrier film inflatable packer according to claim 1, is characterized in that: the oil duct quantity of described top connection axis is 1-3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420536111.XU CN204113197U (en) | 2014-09-18 | 2014-09-18 | Barrier film inflatable packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420536111.XU CN204113197U (en) | 2014-09-18 | 2014-09-18 | Barrier film inflatable packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204113197U true CN204113197U (en) | 2015-01-21 |
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ID=52330521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420536111.XU Expired - Fee Related CN204113197U (en) | 2014-09-18 | 2014-09-18 | Barrier film inflatable packer |
Country Status (1)
| Country | Link |
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| CN (1) | CN204113197U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265233A (en) * | 2014-09-18 | 2015-01-07 | 天津五一机电设备有限公司 | Membrane expansion type packer |
-
2014
- 2014-09-18 CN CN201420536111.XU patent/CN204113197U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265233A (en) * | 2014-09-18 | 2015-01-07 | 天津五一机电设备有限公司 | Membrane expansion type packer |
| CN104265233B (en) * | 2014-09-18 | 2016-09-07 | 天津五一机电设备有限公司 | Barrier film inflatable packer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150121 Termination date: 20160918 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |