CN201818277U - Compression type open hole packer - Google Patents
Compression type open hole packer Download PDFInfo
- Publication number
- CN201818277U CN201818277U CN2010205883997U CN201020588399U CN201818277U CN 201818277 U CN201818277 U CN 201818277U CN 2010205883997 U CN2010205883997 U CN 2010205883997U CN 201020588399 U CN201020588399 U CN 201020588399U CN 201818277 U CN201818277 U CN 201818277U
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- ring
- packing element
- open hole
- top connection
- cylinder sleeve
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Abstract
The utility model provides a compression type open hole packer, and is applied to layer fracturing and acidifying reconstruction of open hole oil well. the outer wall of the upper joint central pipe is top-down successively provided with a rubber barrel upper protrusion preventing ring, a rubber barrel assembly, a metal distance ring, a rubber barrel lower protrusion preventing ring, a positioning barrel, a midway seat-sealing preventing mechanism, a clamping ring, and a piston in a sleeve installation; the lower end of an upper joint is connected on internal screw thread of a lower joint; the upper end of the lower joint is in an external threaded connection with a cylinder sleeve, the lower end of the cylinder sleeve is provided with a locking screw in a screw thread fixation, the lower joint and the cylinder sleeve are positioned via the locking screw. the upper end of the lower joint is provided with a locking pin in a screw thread fixation, the lower joint and the upper joint are positioned via the locking pin. The beneficial effects of the compression type open hole packer are in that: pressure resistant capability of the rubber cylinder assembly is improved, downwell difficulty and drill stuck risk of packer are reduced. The rubber barrel upper protrusion preventing ring and the rubber barrel lower protrusion preventing ring are provided with advantages of big swelling amount, and high supporting strength; The compression type open hole packer is suitable for open hole well with many variations of hole well track, and improves safety of packer downwell.
Description
Technical field
The utility model relates to oil field oil recovery, well workover technology field, and particularly a kind of downhole packer is a kind of compression open hole packer.
Background technology
At present; the domestic existing open hole packer adopts expanding packing element structure more; for guaranteeing the sealing effectiveness in the bore hole section; usually can guarantee by increasing packing element length; general expanding open hole packer packing element is about 1m; the packer length overall is about 2m; difficulty and bit freezing risk that packer is gone into the well have been increased; and such packer voltage endurance capability is lower; generally be no more than 40MPa; generally be used for the drillstem test of drilling process or, can not be used for open hole well separate stratum fracfturing or acidizing treatment as the external packer of pipe use.
Chinese patent publication number: CN201087722, a kind of open hole well packer is disclosed, mainly comprise sealing mechanism and guiding mechanism two parts, guiding mechanism comprises axle, sealing box cupling and connected urceolus, axle places both endoporus, and pass cartridge, support chip is connected with lower contact, constitutes tubular structure by sealing box cupling, urceolus, axle, cartridge and lower contact.Be provided with by-pass structure on the tube wall above the axle of guiding mechanism, on the axle that contacts with the guiding mechanism tube wall below this by-pass structure, be provided with hermetically-sealed construction.Put the method for putting tubing string on this packer adopts and come set packer, be mainly used in formation testing.
Chinese patent publication number CN201087723, a kind of slim-hole open hole packer is disclosed, mainly comprise guiding mechanism and sealing mechanism, described guiding mechanism comprises top connection, places the sealing ring pressure cap of top connection endoporus, axle and the slide head that is connected with top connection, axle is connected with slide head with the sealing ring pressure cap respectively, and pass cartridge, support chip is connected with lower contact, axle moves up and down between top connection and slide head, slide head is connected with cartridge, constitutes tubular structure by top connection, axle, slide head with lower contact.This packer also is to put the method for putting tubing string on adopting to come set packer, is mainly used in formation testing.
Chinese patent publication number: CN201351477, a kind of well head pressurization open hole packer device is provided, the central tube upper end is connected with top connection, the central tube lateral wall is provided with cylinder sleeve from top to bottom successively, last metal bowl, the packing tube reaches metal bowl down, the central tube lower end with set joint and be connected, cylinder sleeve is by on the cylinder sleeve, following pipe nipple connects to form, form high pressure chest between the pipe nipple under pipe nipple and the cylinder sleeve on central tube and the cylinder sleeve, be positioned on the central tube on pipe nipple top on the cylinder sleeve boss is arranged, on boss lateral wall and the cylinder sleeve pipe nipple inside wall fit and its between cut off, the center tube wall that is positioned at pipe nipple bottom on the cylinder sleeve is provided with ball-and-seat, the gas injection valve is arranged on the pipe nipple under the cylinder sleeve, the gas injection valve communicates with high pressure chest, and packing tube upper and lower side is connected with last metal bowl bottom and following metal bowl top respectively, and following metal bowl bottom is located at and is set joint top.This packer is by well head pressurization, pressure release activates the down-hole high pressure intracavity gas and promotes the cylinder sleeve compressive seal and set then, but this packer not design, certainly will make to set pressure and reduce if the high pressure intracavity gas leaks from snap close, and setting procedure is loaded down with trivial details, fails to promote the use of.
Summary of the invention
The purpose of this utility model is: a kind of compression open hole packer is provided, is applicable to open hole well separate stratum fracfturing and acidifying transformation, adopt the compression packing element combination of packing element protrusion-dispelling assembly and different structure, satisfy the requirement that open hole well separate stratum fracfturing and acidifying are transformed.
The technical solution adopted in the utility model is: the compression open hole packer, mainly by top connection, protrusion-dispelling ring on the packing element, the packing element assembly, the metal spacer ring, protrusion-dispelling ring under the packing element, positioning tube, anti-midway setting mechanism, lock ring, cylinder sleeve, piston, sealing ring, set pin, the central tube inlet opening, joint ring, the locking pin, lock screw and lower contact are formed, there is internal thread the top connection upper end, it is characterized in that: there is central tube the top connection lower end, is with protrusion-dispelling ring on the packing element on the outer wall of top connection central tube from top to bottom successively, the packing element assembly, the metal spacer ring, protrusion-dispelling ring under the packing element, positioning tube, anti-midway setting mechanism, lock ring and piston; The lower end of top connection connects on the internal thread of lower contact; Be connected with cylinder sleeve at the lower contact upper external screw thread, sealing ring is installed in the seal groove of piston, setting pin adopts screw buckle that piston and top connection are linked together, between lower contact and inboard wall of cylinder liner, joint ring is arranged, screw thread is fixed with lock screw in the lower end of cylinder sleeve, lock screw is passed cylinder sleeve, and lower contact and cylinder sleeve are located by lock screw.Screw thread is fixed with the locking pin in the lower contact upper end, and the locking pin passes lower contact, and lower contact and top connection are by locking pin location.In top connection central tube bottom the central tube inlet opening is arranged, the correspondence position of central tube inlet opening is in the lower end of piston.
On the packing element under protrusion-dispelling ring and the packing element protrusion-dispelling ring form by the double layer of metal tube respectively, for protrusion-dispelling ring under protrusion-dispelling ring and the packing element on the assurance packing element can expand simultaneously with the packing element assembly, an annular groove is arranged on the outer wall of metal cylinder, in annular groove, circumferentially be evenly equipped with 12 through holes, and with metal cylinder except that root along the axle be evenly distributed with groove, the metal cylinder outer wall is divided into 12 equal portions tile shapes; The packing element assembly expands when setting, and metal cylinder begins bending from the cannelure of weakness, expands to the borehole wall.Why assembling the double layer of metal tube, is that the slit is increasing between the tile because of the curved expansion along with metal cylinder, for preventing packing element rheology from seam, interlaced the staggering of tile slit of double layer of metal tube, guarantees packing element protrusion-dispelling effect.
The packing element assembly is made of four packing elements, and two packing elements are one group, and the metal spacer ring is between two groups of packing elements.Two packing elements adopt the soft gum tubes design, and two packing elements in the outside adopt the design of ebonite tube, and soft gum tube fully expands and guarantees that sealing effectiveness in the bore hole section, the ebonite tube back of expanding plays two effects: the one, and auxiliary seal, the 2nd, assist anti-soft gum tube rheology.
The beneficial effects of the utility model:
The first, the packing element be made up of two kinds of different materials, different hardness, difformities of packing element assembly is formed, and has improved the voltage endurance capability of packing element assembly on the one hand, even the well of open hole well is increased to diameter 170mm by diameter 152.4mm, also can well seal.It is a lot of that limited on the other hand packing element length reduces the length of packer, and the packer length overall is not more than 1.5 meters, greatly reduces packer and works go into the well difficulty and bit freezing risk.
The second, on the packing element under protrusion-dispelling ring and the packing element protrusion-dispelling ring adopt special construction, compare with general casing packer protrusion-dispelling ring, it is big to have swell increment, the advantage that support strength is high more can adapt to the bore hole well and change irregular packing requirement.
Three, adopt anti-setting mechanism to improve the risk that the anti-setting mechanism pin of conventional packer might be cut off midway midway, more adapt to the diverse open hole well of eye well track, further improved the security reliability that removes of packer.
Description of drawings
Fig. 1 is the utility model compression open hole packer the first half structural profile schematic diagram.
Fig. 2 is the utility model compression open hole packer the latter half structural profile schematic diagram.
Among the figure, 1. top connection, 2. protrusion-dispelling ring on the packing element, 3. packing element assembly, 4. metal spacer ring, 5. protrusion-dispelling ring under the packing element, 6. positioning tube is 7. prevented setting mechanism, 8. lock ring midway, 9. cylinder sleeve, 10. piston, 11. sealing rings, 12. set pin, 13. central tube inlet openings, 14. joint rings, 15. the locking pin, 16. lock screw, 17. lower contacts.
The specific embodiment
Embodiment 1: with a compression open hole packer is example, and the utility model is described in further detail.
Consult Fig. 1.The compression open hole packer, mainly by protrusion-dispelling ring 5 under protrusion-dispelling ring 2, packing element assembly 3, metal spacer ring 4, the packing element on top connection 1, the packing element, positioning tube 6, midway anti-setting mechanism 7, lock ring 8, cylinder sleeve 9, piston 10, sealing ring 11, set pin 12, central tube inlet opening 13, joint ring 14, locking pin 15, lock screw 16 and lower contact 17 and form.
There is internal thread top connection 1 upper end, and there is central tube top connection 1 lower end, and top connection 1 is an one with central tube.Be with on the packing element protrusion-dispelling ring 5 under protrusion-dispelling ring 2, packing element assembly 3, metal spacer ring 4, the packing element, positioning tube 6, anti-setting mechanism 7, lock ring 8 and piston 10 midway on the outer wall of top connection 1 central tube from top to bottom successively.Packing element assembly 3 is made of four packing elements, and two packing elements are one group, and metal spacer ring 4 is between two groups of packing elements.On the packing element under protrusion-dispelling ring 2 and the packing element protrusion-dispelling ring 5 form by the double layer of metal tube respectively, an annular groove is arranged on the outer wall of metal cylinder, in annular groove, circumferentially be evenly equipped with 12 through holes, and with metal cylinder except that root along the axle be evenly distributed with groove, the metal cylinder outer wall is divided into 12 equal portions tile shapes.
Consult Fig. 2.The lower end of top connection 1 connects on the internal thread of lower contact 17; Be connected with cylinder sleeve 9 at lower contact 17 upper external screw threads, sealing ring 11 is installed in the seal groove of piston 10, six set pin 12 and adopt screw buckle that piston 10 and top connection 1 are linked together, between lower contact 17 and cylinder sleeve 9 inwalls, joint ring 14 is arranged, be fixed with four lock screw 16 at the lower end of cylinder sleeve 9 screw thread, lock screw 16 is passed cylinder sleeve 9, and lower contact 17 is located by lock screw 16 with cylinder sleeve 9.Be fixed with four locking pins 15 at lower contact 17 upper end screw threads, locking pin 15 passes lower contact 17, and lower contact 17 is passed through locking pin 15 location with top connection 1.In top connection 1 central tube bottom central tube inlet opening 13 is arranged, the correspondence position of central tube inlet opening 13 is in the lower end of piston 10.
Under this open hole packer during well construction, its upper and lower side connects oil pipe respectively, adopt the oil pipe pressuring method to set, during the oil pipe pressurization, high-pressure fluid enters into piston cavity from central tube inlet opening 13, cut off and set pin 12, promotion piston 10 moves upward behind the segment distance, lock ring 8 enters separating in the locked groove of piston 10, anti-midway setting mechanism 7 latch-releases, and piston 10 continues to move upward, anti-midway setting mechanism 7, positioning tube 6 move upward, on the packing element under protrusion-dispelling ring 2, packing element assembly 3, the packing element protrusion-dispelling ring 5 be subjected to compression swelling, cling on the bore hole borehole wall, set and finish.Because of having from snap close in the positioning tube 6, the gingival cyst of mucous gland in the newborn engagement in snap close and top connection 1 can guarantee that positioning tube can not retreat, and then guarantees not deblocking of packer.
Claims (3)
1. compression open hole packer, mainly by top connection (1), protrusion-dispelling ring (2) on the packing element, packing element assembly (3), metal spacer ring (4), protrusion-dispelling ring (5) under the packing element, positioning tube (6), anti-midway setting mechanism (7), lock ring (8), cylinder sleeve (9), piston (10), sealing ring (11), set pin (12), central tube inlet opening (13), joint ring (14), locking pin (15), lock screw (16) and lower contact (17) are formed, there is internal thread top connection (1) upper end, it is characterized in that: there is central tube top connection (1) lower end, is with protrusion-dispelling ring (2) on the packing element on the outer wall of top connection (1) central tube from top to bottom successively, packing element assembly (3), metal spacer ring (4), protrusion-dispelling ring (5) under the packing element, positioning tube (6), anti-midway setting mechanism (7), lock ring (8) and piston (10); The lower end of top connection (1) connects on the internal thread of lower contact (17); Be connected with cylinder sleeve (9) at lower contact (17) upper external screw thread, sealing ring (11) is installed in the seal groove of piston (10), setting pin (12) adopts screw buckle that piston (10) and top connection (1) are linked together, between lower contact (17) and cylinder sleeve (9) inwall, joint ring (14) is arranged, lower end screw thread at cylinder sleeve (9) is fixed with lock screw (16), lock screw (16) is passed cylinder sleeve (9), and lower contact (17) is located by lock screw (16) with cylinder sleeve (9); Screw thread is fixed with locking pin (15) in lower contact (17) upper end, and locking pin (15) passes lower contact (17), and lower contact (17) is passed through locking pin (15) location with top connection (1); In top connection (1) central tube bottom central tube inlet opening (13) is arranged, the correspondence position of central tube inlet opening (13) is in the lower end of piston (10).
2. compression open hole packer according to claim 1, it is characterized in that: on the packing element under protrusion-dispelling ring (2) and the packing element protrusion-dispelling ring (5) form by the double layer of metal tube respectively, an annular groove is arranged on the outer wall of metal cylinder, in annular groove, circumferentially be evenly equipped with 12 through holes, and with metal cylinder except that root along the axle be evenly distributed with groove, the metal cylinder outer wall is divided into 12 equal portions tile shapes.
3. compression open hole packer according to claim 1 and 2 is characterized in that: packing element assembly (3) is made of four packing elements, and two packing elements are one group, and metal spacer ring (4) is between two groups of packing elements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205883997U CN201818277U (en) | 2010-10-28 | 2010-10-28 | Compression type open hole packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205883997U CN201818277U (en) | 2010-10-28 | 2010-10-28 | Compression type open hole packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201818277U true CN201818277U (en) | 2011-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205883997U Expired - Lifetime CN201818277U (en) | 2010-10-28 | 2010-10-28 | Compression type open hole packer |
Country Status (1)
| Country | Link |
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| CN (1) | CN201818277U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103046893A (en) * | 2012-12-26 | 2013-04-17 | 安东石油技术（集团）有限公司 | Composite rubber sleeve packer |
| CN103375146A (en) * | 2012-04-13 | 2013-10-30 | 中国石油化工股份有限公司 | Outburst prevention device and outburst prevention method for packer sealing mechanism |
| CN103541681A (en) * | 2013-10-28 | 2014-01-29 | 四机赛瓦石油钻采设备有限公司 | High-temperature-resistant high-pressure-resistant cross-class compression type seal component for bushes and barefoot wells |
| CN104213864A (en) * | 2013-05-30 | 2014-12-17 | 上海优强石油科技有限公司 | Packer rubber cylinder protection device |
| CN107269247A (en) * | 2017-06-15 | 2017-10-20 | 隆学武 | Half bag enhancing set, cartridge and packer |
| CN110388191A (en) * | 2019-04-04 | 2019-10-29 | 上海优强石油科技有限公司 | The packing element support device of big expanding open hole well packer |
-
2010
- 2010-10-28 CN CN2010205883997U patent/CN201818277U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103375146A (en) * | 2012-04-13 | 2013-10-30 | 中国石油化工股份有限公司 | Outburst prevention device and outburst prevention method for packer sealing mechanism |
| CN103046893A (en) * | 2012-12-26 | 2013-04-17 | 安东石油技术（集团）有限公司 | Composite rubber sleeve packer |
| CN103046893B (en) * | 2012-12-26 | 2015-10-28 | 安东石油技术（集团）有限公司 | Composite rubber sleeve packer |
| CN104213864A (en) * | 2013-05-30 | 2014-12-17 | 上海优强石油科技有限公司 | Packer rubber cylinder protection device |
| CN104213864B (en) * | 2013-05-30 | 2016-10-26 | 上海优强石油科技有限公司 | Protective device for packer rubber tube |
| CN103541681A (en) * | 2013-10-28 | 2014-01-29 | 四机赛瓦石油钻采设备有限公司 | High-temperature-resistant high-pressure-resistant cross-class compression type seal component for bushes and barefoot wells |
| CN107269247A (en) * | 2017-06-15 | 2017-10-20 | 隆学武 | Half bag enhancing set, cartridge and packer |
| CN110388191A (en) * | 2019-04-04 | 2019-10-29 | 上海优强石油科技有限公司 | The packing element support device of big expanding open hole well packer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110504 |
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| CX01 | Expiry of patent term |