CN101403284B - Down-hole tool and controllable segment sealing device for down-hole working barrel seal - Google Patents
Down-hole tool and controllable segment sealing device for down-hole working barrel seal Download PDFInfo
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- CN101403284B CN101403284B CN200810230559A CN200810230559A CN101403284B CN 101403284 B CN101403284 B CN 101403284B CN 200810230559 A CN200810230559 A CN 200810230559A CN 200810230559 A CN200810230559 A CN 200810230559A CN 101403284 B CN101403284 B CN 101403284B
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Abstract
The invention relates to a controllable section sealing device used for the sealing of a downhole tool and a downhole working barrel, comprising a barrel-shaped shell; the controllable section sealing device also comprises a sliding-sleeve driving mechanism installed in the barrel-shaped shell, seal housings fixedly sheathed on the outer wall of the barrel-shaped shell, and sliding sleeve sheathed on the outer wall of the barrel-shaped shell in a sliding way; the seal housing is provided with a bowl-mouth-shaped elastic flaring opening which is correspondingly arranged with the sliding sleeve and left with a clearance which is capable of being inserted by the sliding sleeve so as to open the lip clearance of the elastic flaring opening together with the barrel-shaped shell, the seal housings are arranged on the barrel-shaped shell in pairs, two seal housings arranged in pairs are arranged at two ends of one section of the barrel wall, and the sliding sleeves are also arranged in pairs and correspond to the pair of seal housings. The controllable section sealing device realizes the interference sealing with the working barrel and the controllable sealing and long-term monitoring of the formation pressure through the deformation of the seal sleeve, thus causing higher application value of a test file.
Description
Technical field
The invention belongs to the wiper seal technical field, relate to a kind of form of structure of the controllable segment sealing that cooperates with the underground work tube of oil well, well.
Background technology
The pressure measurement seal section sealing means that generally adopts at present has two kinds: seal with O ring and mechanical trigger-type cup packing.The characteristics of seal with O ring mode are to belong to the interference sealing, and are relatively simple for structure, and shortcoming is exactly 0 shape circle intensity difference, comes off easily, when getting into seating nipple, damages easily, causes seal failure, and test file loses using value.Machinery trigger-type cup packing technology is mainly seen in larger-size well pressure measurement and use seal section, and characteristics are through mechanical triggering technique, on carry instrument cam overturn, leather cup and locating detent strut.On carry instrument through behind the seating nipple, pour in the seating nipple with certain speed again, lean on the interference of leather cup to seal.Shortcoming is that appearance and size is bigger, and can only test from bottom to up, is not suitable for the occasion of oil well annulus logging, and can't monitor the pressure on a certain stratum.
Summary of the invention
The purpose of patent of the present invention is: a kind of controlled electronic seal section structure is provided; Can control strutting or drawing in of double leather cup on the seal section on ground; Both can make instrument smoothly through annular space and seating nipple, and can realize interference sealing again, to overcome the deficiency of present technology to the seating nipple endoporus.
Technical scheme of the present invention is: following well tool and underground work tube controllable segment sealing sealing device; Comprise cylindrical outer casing; Described controllable segment sealing device comprises that also sealing shroud, slip cap that the sliding sleeve driving mechanism, the fixed cover that are installed in the cylindrical outer casing are loaded on the cylindrical outer casing outer wall are loaded on the sliding sleeve on the cylindrical outer casing outer wall; Said sealing shroud has the elasticity enlarging of bowl-mouth shape; The elasticity enlarging of said sealing shroud and sliding sleeve are oppositely arranged also and leave between the cylindrical outer casing and can supply sliding sleeve to insert to strut the gap on its elasticity enlarging lip limit; Said sealing shroud is arranged on the cylindrical outer casing in pairs; Two sealing shrouds that are provided with in pairs are relatively arranged on the two ends of one section barrel of cylindrical outer casing, and said sliding sleeve also is provided with and corresponding with paired sealing shroud in pairs, and two clutch ends that the direction of motion that said sliding sleeve driving mechanism has paired setting is opposite cooperate with the corresponding transmission of two sliding sleeves of paired setting respectively.
Said sliding sleeve driving mechanism comprises motor and transmission mechanism.
Said sliding sleeve driving mechanism is made up of the screw-nut body that motor and the clutch end that is connected with drive of motor can go up and down vertically.
Said screw-nut body comprises that turn-screw reaches and the transmission nut of the paired setting of its threaded engagement; The thread rotary orientation of two transmission nuts that are provided with in pairs is opposite; Said turn-screw is connected with drive of motor through transmission connection piece; Two transmission nuts of described paired setting respectively with the corresponding connection of two sliding sleeves of paired setting, offer the axial groove that the part that links to each other that supplies transmission nut and sliding sleeve is interted and moved vertically on the said cylindrical outer casing.
Said sealing shroud is a leather cup, and said sliding sleeve is to insert the closing in tapered sleeve that cooperate with the elasticity enlarging of leather cup with the opposite end of leather cup.
Said cylindrical outer casing is provided with pressure tap, the be placed in axial both sides of pressure tap of two sealing shrouds of described paired setting.
Owing to adopted technique scheme, the form of structure of this patent of invention has following characteristics:
A) can strut or draw at the Ground Control sealing shroud, instrument can be passed through from seating nipple and annular space smoothly, avoid sealing shroud to be damaged, and can test to the random layer position neatly and can not be hampered;
B) distortion of sliding sleeve crush seal cover produces the interference sealing effectiveness, and the sealing shroud both sides can be born the bidirectional pressure difference of 15MPa for a long time, and sealing reliability is high;
C) the distortion realization through sealing shroud seals with the interference of the endoporus of seating nipple; And through pressure nozzle strata pressure is incorporated on the strata pressure meter and tests; Thereby realized the controlled sealing and the long term monitoring of strata pressure, made the using value of test file higher;
D) the instrument minimum outer diameter can accomplish can satisfy the requirement of annulus logging in the ф 25mm.
The controlled electronic seal section of this invention is applicable to the occasion of conventional oil, the test of well zonal pressure.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the A-A sectional view of Fig. 1.
The specific embodiment
Like Fig. 1, shown in Figure 2, this embodiment of the present invention be with measuring cell as following well tool, wherein the introducing of strata pressure meter 13, pressure nozzle 11 and seating nipple 17 is for the ease of the operating principle of controllable segment sealing device of the present invention is described.Controllable segment sealing device of the present invention comprises the cylindrical outer casing body that measuring cell urceolus 14 is constituted, and also comprises motor 1, shaft coupling 2, output shaft 3, power transmission shaft 4, dextrorotation transmission nut 5, sliding sleeve 6,16, leather cup 7,9, drive screw 8, left-handed transmission nut 10, pressure nozzle 11 and transmission screw 12.
Lower end in the measuring cell urceolus 14 is provided with motor 1; The upper end is provided with strata pressure meter 13 and pressure nozzle 11; Pressure nozzle 11 offers pressure tap 15 in the middle part of measuring cell urceolus 14; Motor 1 is in transmission connection with drive screw 8 through shaft coupling 2, output shaft 3, power transmission shaft 4; On the barrel of measuring cell urceolus 14 in the upper and lower of pressure tap 15 respectively slip cap two sliding sleeves 16,6 are housed, near the corresponding fixed cover of an end of pressure tap 15 leather cup 7,9 is housed in two sliding sleeves 16,6 on the barrel of measuring cell urceolus 14.The opposite end of leather cup 7,9 and sliding sleeve 6,16 is for being respectively the rim of a bowl structure and tapered sleeve structure; Leave between leather cup 7,9 and the measuring cell urceolus 14 and can supply sliding sleeve 6,16 to insert to strut the gap on leather cup 7,9 lip limits; The sliding sleeve 6,16 that the lip limit of the bowl mouth end of leather cup 7,9 can be inserted into pushes internally and outwards routs up, thus the gap between radial seal measuring cell urceolus 14 and the seating nipple.The transmission screw 12 of sliding sleeve 6 through radially is connected with dextrorotation transmission nut 5, and dextrorotation transmission nut 5 spinnings are on drive screw 8, and 6 of sliding sleeves are connected through transmission screw and the left-handed transmission nut 10 of spinning on drive screw 8.
Leather cup in the foregoing description is a kind of sealing shroud, can certainly be other the sealing shroud with elasticity enlarging; It is how right that leather cup in the foregoing description, sliding sleeve also can be provided with on the measuring cell urceolus, and on the measuring cell urceolus, form a plurality of seal sections; Following well tool in the foregoing description is a measuring cell, certainly is other various well tools down.
Sliding sleeve driving mechanism in the foregoing description is made up of motor and screw-nut body, is realized driving by the clutch end connection drive sliding sleeve of screw-nut body, and its transmission fit system is the connection transmission.Can certainly replace with other transmission mechanisms by driven by motor, for example gear mechanism, worm-and-wheel gear, linkage, belt mechanism etc. are connected transmission or Contact Transmission with sliding sleeve.
The present invention is when work, and after the electronic seal section of measuring cell received the Ground Control signal, the axle of motor 1 began to rotate, and through shaft coupling 2, output shaft 3 and power transmission shaft 4 rotation is delivered on the drive screw 8.Drive screw 8 lower ends processing right-handed thread, upper end processing left hand thread.When drive screw 8 (overlooking) rotation counterclockwise; Drive dextrorotation transmission nut 5 and do rectilinear motion to the measuring cell middle part with left-handed transmission nut 10; Drive sliding sleeve 6,16 through the transmission screw and also do rectilinear motion to the measuring cell middle part; Thereby the rim of a bowl lip limit of extruding leather cup 7,9 is outwards routed up, and forms the interference sealing with the endoporus of seating nipple, thereby has realized the sealing of strata pressure.Strata pressure is incorporated on the strata pressure meter 13 through the pressure tap 15 of the stratum fluid hole 29 on the seating nipple 17 through pressure nozzle 11, has realized the test of strata pressure.When motor 14 drives drive screw 8 clockwise directions (overlooking) rotation; Drive dextrorotation transmission nut 5 and do rectilinear motion to the measuring cell outer end with left-handed transmission nut 10; Drive sliding sleeve 6,16 through the transmission screw and also do rectilinear motion outward; Draw in the maximum gauge scope of measuring cell under elastic reaction on the rim of a bowl lip limit of leather cup 7,9, makes measuring cell and seating nipple deblocking.
Claims (3)
1. descend well tool and underground work tube controllable segment sealing sealing device; Comprise cylindrical outer casing; It is characterized in that: described controllable segment sealing device comprises that also sealing shroud, slip cap that the sliding sleeve driving mechanism, the fixed cover that are installed in the cylindrical outer casing are loaded on the cylindrical outer casing outer wall are loaded on the sliding sleeve on the cylindrical outer casing outer wall; Said sealing shroud has the elasticity enlarging of bowl-mouth shape; The elasticity enlarging of said sealing shroud and sliding sleeve are oppositely arranged also and leave between the cylindrical outer casing and can supply sliding sleeve to insert to strut the gap on its elasticity enlarging lip limit; Said sealing shroud is arranged on the cylindrical outer casing in pairs; Two sealing shrouds that are provided with in pairs are relatively arranged on the two ends of one section barrel of cylindrical outer casing, and said sliding sleeve also is provided with and corresponding with paired sealing shroud in pairs, and two clutch ends that the direction of motion that said sliding sleeve driving mechanism has paired setting is opposite cooperate with the corresponding transmission of two sliding sleeves of paired setting respectively; Said sliding sleeve driving mechanism is made up of the screw-nut body that motor and the clutch end that is connected with drive of motor can go up and down vertically; Said screw-nut body comprises that turn-screw reaches and the transmission nut of the paired setting of its threaded engagement; The thread rotary orientation of two transmission nuts that are provided with in pairs is opposite; Said turn-screw is connected with drive of motor through transmission connection piece; Two transmission nuts of described paired setting are the transmission screw through radially and two corresponding being connected of sliding sleeve being provided with in pairs respectively, offer on the said cylindrical outer casing to supply the transmission screw to intert and only revolve mobile axial groove vertically.
2. controllable segment sealing device according to claim 1 is characterized in that: said sealing shroud is a leather cup, and said sliding sleeve is to insert the closing in tapered sleeve that cooperate with the elasticity enlarging of leather cup with the opposite end of leather cup.
3. controllable segment sealing device according to claim 1 and 2 is characterized in that: said cylindrical outer casing is provided with pressure tap, the be placed in axial both sides of pressure tap of two sealing shrouds of described paired setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810230559A CN101403284B (en) | 2008-10-23 | 2008-10-23 | Down-hole tool and controllable segment sealing device for down-hole working barrel seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810230559A CN101403284B (en) | 2008-10-23 | 2008-10-23 | Down-hole tool and controllable segment sealing device for down-hole working barrel seal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101403284A CN101403284A (en) | 2009-04-08 |
| CN101403284B true CN101403284B (en) | 2012-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810230559A Active CN101403284B (en) | 2008-10-23 | 2008-10-23 | Down-hole tool and controllable segment sealing device for down-hole working barrel seal |
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| Country | Link |
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| CN (1) | CN101403284B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107299829B (en) * | 2016-04-15 | 2023-07-18 | 贵州航天凯山石油仪器有限公司 | Underground anchoring method and device of oil pipe plugging tool |
| CN108999587B (en) * | 2017-06-06 | 2020-09-11 | 中石化石油工程技术服务有限公司 | Recoverable automatically controlled hydraulic pressure leather cup instrument of pump sending |
| CN110863796B (en) * | 2019-12-11 | 2023-11-07 | 贵州航天凯山石油仪器有限公司 | Electric pressure relief method and device for sealing section |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4392376A (en) * | 1981-03-31 | 1983-07-12 | S-Cubed | Method and apparatus for monitoring borehole conditions |
| CN2176924Y (en) * | 1993-08-30 | 1994-09-14 | 张广峰 | Portable tyre assembling and disassembling frame |
| CN2802074Y (en) * | 2005-06-09 | 2006-08-02 | 杨红 | Multi-force actuation packer |
-
2008
- 2008-10-23 CN CN200810230559A patent/CN101403284B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4392376A (en) * | 1981-03-31 | 1983-07-12 | S-Cubed | Method and apparatus for monitoring borehole conditions |
| CN2176924Y (en) * | 1993-08-30 | 1994-09-14 | 张广峰 | Portable tyre assembling and disassembling frame |
| CN2802074Y (en) * | 2005-06-09 | 2006-08-02 | 杨红 | Multi-force actuation packer |
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| CN101403284A (en) | 2009-04-08 |
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