CN105350938A - Mechanical packer - Google Patents
Mechanical packer Download PDFInfo
- Publication number
- CN105350938A CN105350938A CN201510930421.9A CN201510930421A CN105350938A CN 105350938 A CN105350938 A CN 105350938A CN 201510930421 A CN201510930421 A CN 201510930421A CN 105350938 A CN105350938 A CN 105350938A
- Authority
- CN
- China
- Prior art keywords
- threaded
- slips
- packer
- cone
- central tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/127—Packers; Plugs with inflatable sleeve
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/129—Packers; Plugs with mechanical slips for hooking into the casing
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to the technical field of drilling and production of oil wells in the oil field, and particularly relates to a mechanical packer which comprises upper joints, center pipes, jacking force rings, spacers, packer rubbers, threaded stoppers, threaded sleeves, cones, clamping tiles, check blocks, springs, sliding blocks, seat sealing sleeves, convex lugs, lower joints and shear pins, wherein the upper joints are connected with the upper parts of the center pipes, two adjacent packer rubbers are connected by the spacer, the lower parts of the packer rubbers are matched with the threaded stoppers, the threaded stoppers are in threaded connection with the upper parts of the cones, and the cones are connected with the threaded sleeves by the shear pins; the lower joints are connected with the lower parts of the center pipes, the lower ends of the clamping tiles are hinged to the sliding blocks, the lower parts of the sliding blocks are in threaded connection with the seat sealing sleeves, and the seat sealing sleeves are provided with guide grooves in a vertically through manner. Compared with the prior art, injection of liquid from the outside is not required for seat sealing of the packer, the work of seat sealing can be achieved in a mechanical rotating way, the operation is simple, and the use is convenient.
Description
Technical field
the present invention relates to oilfield drilling and production technology field, particularly relate to a kind of mechanical packer.
Background technology
oil well casing causes sleeve pipe to occur leakage phenomena because of reasons such as cementing quality, connecting thread, ground movement, corrosions, brings unfavorable factor to oil well measure construction and affects crude output.Once leakage situation appears in the non-payzone of oil well, must leakage points be determined before enforcement is repaired, now verify that the method for casing leakage point generally adopts packer, close oil jacket annular space at the above position of payzone, by sleeve pipe pressuring method, sleeve pipe is verified.But existing a few money packers are tested in cover work progress in enforcement, have unfavorable factor in varying degrees, cause construction to have some setbacks, can not accurately judge leak position problem.
as slip-type packer: because of slip-type packer by put and put tubing string, conversion slips track back seat card forms fulcrum, utilize release tubing string suspending weight compression packing element setting, but this kind of packer is not suitable for verifying that leakage points is constructed apart from the position that well head is more shallow and darker, during shallow-layer construction, because tubing string suspending weight deficiency causes setting bad, because of slips contrail difficulty during deep layer construction, cause setting difficulty.Particularly in horizontal well and high angle hole, the problems referred to above are particularly outstanding.
fluid pressure type and inflatable packer: must can ensure that it is setting when keeping the large and casing pressure of tubing pressure when constructing.Test cover construction to terminate, when above extracting tubing string, the liquid in oil pipe must take ground out of, makes troubles to construction operation.
Summary of the invention
the object of the invention is to the deficiency overcoming above-mentioned technology, and a kind of mechanical packer is provided, adopting machinery setting, without the need to suppressing.
the present invention for achieving the above object, by the following technical solutions: a kind of mechanical packer, is characterized in that: comprise top connection, central tube, top power ring, partition, packing element, screw thread stopper, thread bush, cone, slips, block, spring, slide block, setting cover, lug, lower contact and shear pin; Described top connection is connected with the top of described central tube, described top power ring is connected with the bottom of described top connection, described packing element is at least two, connected by described partition between two adjacent packing elements, described packing element bottom coordinates with described screw thread stopper, described screw thread stopper is threaded with the top of described cone, described thread bush is provided with between described cone and described center, described thread bush is threaded connection on described central tube, is connected between described cone with described thread bush by described shear pin; The bottom of described cone coordinates with described slips, described lower contact is connected with the bottom of described central tube, the lower end of described slips is hinged on described slide block, described spring is provided with between described slide block and described lower contact, the bottom of slide block is connected with described setting external threading, described setting putting from top to bottom is provided with gathering sill, described gathering sill and the described they fit be arranged in lower contact.Relative to prior art, squeeze into liquid during this packer set without the need to the external world, the mode rotated by machinery just can realize setting work, simple to operate, easy to use.
preferably, described spring is three, and one of them spring coordinates with the bottom of described slips.Spring plays two effects, slips can be made to be in the state of contraction on the one hand always, only have and just slowly open when slips front portion touches cone; Slide block can be made to expand outwardly all the time on the other hand, thus can be adjacent to all the time with tube wall, so that subsequent central pipe rotates.
preferably, described block is arranged between described central tube and described slips.
the invention has the beneficial effects as follows: relative to prior art, squeeze into liquid during this packer set without the need to the external world, the mode rotated by machinery just can realize setting work, simple to operate, easy to use.
Accompanying drawing explanation
fig. 1 is structural representation of the present invention;
fig. 2 is the structural representation of setting cover in the present invention.
Detailed description of the invention
the specific embodiment of the present invention is described in detail below in conjunction with accompanying drawing and preferred embodiment.As depicted in figs. 1 and 2, a kind of mechanical packer, comprises top connection 1, central tube 2, top power ring 3, partition 4, packing element 5, screw thread stopper 6, thread bush 7, cone 8, slips 9, block 10, spring 11, slide block 12, setting cover 13, lug 14, lower contact 15 and shear pin 16; Described top connection is connected with the top of described central tube, described top power ring is connected with the bottom of described top connection, described packing element is at least two, connected by described partition between two adjacent packing elements, described packing element bottom coordinates with described screw thread stopper, described screw thread stopper is threaded with the top of described cone, described thread bush is provided with between described cone and described center, described thread bush is threaded connection on described central tube, is connected between described cone with described thread bush by described shear pin; The bottom of described cone coordinates with described slips, described lower contact is connected with the bottom of described central tube, the lower end of described slips is hinged on described slide block, described spring is provided with between described slide block and described lower contact, the bottom of slide block is connected with described setting external threading, described setting putting from top to bottom is provided with gathering sill 17, described gathering sill and the described they fit be arranged in lower contact.
setting: this instrument top connection is connected on tubing string, transfer to precalculated position, now positioning tab is positioned at setting sleeve straight trough bottom dead centre, on carry central tube to certain altitude dextrorotation, tubing string is transferred while maintenance right-hand torque, now slider slips, block, slip spider, setting sleeve are motionless under spring and sleeve pipe effect, and cone struts slips, blocks casing wall.Continue to transfer tubing string, cut off shear pin, compression packing element is sealed in oil sets annular space.
deblocking: upper lifting pipe post packing element discharges, drives screw thread stopper, cone unfreezing by thread bush.
preferably, described spring is three, and one of them spring coordinates with the bottom of described slips.
the above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (3)
1. a mechanical packer, is characterized in that: comprise top connection, central tube, top power ring, partition, packing element, screw thread stopper, thread bush, cone, slips, block, spring, slide block, setting cover, lug, lower contact and shear pin; Described top connection is connected with the top of described central tube, described top power ring is connected with the bottom of described top connection, described packing element is at least two, connected by described partition between two adjacent packing elements, described packing element bottom coordinates with described screw thread stopper, described screw thread stopper is threaded with the top of described cone, described thread bush is provided with between described cone and described center, described thread bush is threaded connection on described central tube, is connected between described cone with described thread bush by described shear pin; The bottom of described cone coordinates with described slips, described lower contact is connected with the bottom of described central tube, the lower end of described slips is hinged on described slide block, described spring is provided with between described slide block and described lower contact, the bottom of slide block is connected with described setting external threading, described setting putting from top to bottom is provided with gathering sill, described gathering sill and the described they fit be arranged in lower contact.
2. mechanical packer according to claim 1, is characterized in that: described spring is three, and one of them spring coordinates with the bottom of described slips.
3. mechanical packer according to claim 1, is characterized in that: described block is arranged between described central tube and described slips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510930421.9A CN105350938A (en) | 2015-12-14 | 2015-12-14 | Mechanical packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510930421.9A CN105350938A (en) | 2015-12-14 | 2015-12-14 | Mechanical packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105350938A true CN105350938A (en) | 2016-02-24 |
Family
ID=55326984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510930421.9A Pending CN105350938A (en) | 2015-12-14 | 2015-12-14 | Mechanical packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105350938A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105715226A (en) * | 2016-04-20 | 2016-06-29 | 东营百华石油技术开发有限公司 | Blowout-preventing well plugging device located under wellhead |
| CN108019180A (en) * | 2016-10-31 | 2018-05-11 | 天津汇铸石油设备科技有限公司 | Bidirectional bearing packer |
| CN113513287A (en) * | 2021-09-14 | 2021-10-19 | 东营光年石油科技有限公司 | Negative pressure setting packer |
-
2015
- 2015-12-14 CN CN201510930421.9A patent/CN105350938A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105715226A (en) * | 2016-04-20 | 2016-06-29 | 东营百华石油技术开发有限公司 | Blowout-preventing well plugging device located under wellhead |
| CN108019180A (en) * | 2016-10-31 | 2018-05-11 | 天津汇铸石油设备科技有限公司 | Bidirectional bearing packer |
| CN113513287A (en) * | 2021-09-14 | 2021-10-19 | 东营光年石油科技有限公司 | Negative pressure setting packer |
| CN113513287B (en) * | 2021-09-14 | 2021-12-24 | 东营光年石油科技有限公司 | Negative pressure setting packer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160224 |