CN105370242A - Packer - Google Patents
Packer Download PDFInfo
- Publication number
- CN105370242A CN105370242A CN201510932128.6A CN201510932128A CN105370242A CN 105370242 A CN105370242 A CN 105370242A CN 201510932128 A CN201510932128 A CN 201510932128A CN 105370242 A CN105370242 A CN 105370242A
- Authority
- CN
- China
- Prior art keywords
- central tube
- ring
- lug
- cone
- packer
- 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
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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
Abstract
The invention relates to the technical field of oil field oil well drilling, in particular to a packer. The packer comprises an upper joint, a seal head, rubber cylinders, spacers, a pushing force ring, a cone, a shear pin, a slip, springs, a compression ring, a lower joint, a lug, a lug ring, a lug seat, a central tube and a sliding block. The upper joint is connected with the upper portion of the central tube, the seal head is connected with the upper joint, and the lower portion of one rubber cylinder is matched with the pushing force ring which is in threaded connection with the upper portion of the cone. The lower portion of the cone is matched with the slip, the lower end of the slip is hinged to the sliding block, and the springs are arranged between the sliding block and the central tube. The lug ring is arranged between the central tube and the lower joint in a floating mode. A long groove and a short groove are formed in the lower portion of the central tube and are communicated through a guide groove. Injection of liquid from the outside during setting of the packer is not needed, setting can be achieved in a mechanical rotation mode, and the packer is easy to operate and convenient to use.
Description
Technical field
The present invention relates to oilfield drilling and production technology field, particularly relate to a kind of 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 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 packer, is characterized in that: comprise top connection, seal head, packing element, partition, top power ring, cone, shear pin, slips, spring, pressure ring, lower contact, lug, lug ring, trunnion cup, central tube and slide block; Described top connection is connected with the top of described central tube, described seal head is connected with 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 top power ring, described top power ring is threaded with the top of described cone, is fixed between described cone and described central tube by described shear pin; The bottom of described cone coordinates with described slips, the lower end of described slips is hinged on described slide block, described spring is provided with between described slide block and described central tube, the bottom of slide block is fixed by described pressure ring, described lower contact is fixed on the bottom of described central tube, described lower contact bottom is threaded with described trunnion cup, described lug ring floats and arranges between described central tube and described lower contact, described lug is fixed on described lug ring, the bottom of described central tube is provided with elongated slot and short groove, is communicated with between described elongated slot and short groove by gathering sill.
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 central tube 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 packer, comprises top connection 1, seal head 2, packing element 3, partition 4, top power ring 5, cone 6, shear pin 7, slips 8, spring 9, pressure ring 10, lower contact 11, lug 12, lug ring 13, trunnion cup 14, central tube 15 and slide block 16; Described top connection is connected with the top of described central tube, described seal head is connected with 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 top power ring, described top power ring is threaded with the top of described cone, is fixed between described cone and described central tube by described shear pin; The bottom of described cone coordinates with described slips, the lower end of described slips is hinged on described slide block, described spring is provided with between described slide block and described central tube, the bottom of slide block is fixed by described pressure ring, described lower contact is fixed on the bottom of described central tube, described lower contact bottom is threaded with described trunnion cup, described lug ring floats and arranges between described central tube and described lower contact, described lug is fixed on described lug ring, the bottom of described central tube is provided with elongated slot 17 and short groove 18, is communicated with between described elongated slot and short groove by gathering sill 19.
Setting procedure: packer is with design tubing string down to precalculated position, and now the short groove top that is positioned at of positioning tab, above carries oil pipe to certain altitude, transfer tubing string again, exchange to elongated slot, now, central tube does not turn, but your ring convex rotates, and the frictional force of slips and sleeve pipe is motionless, continue to transfer tubing string, top connection, central tube are descending, and drive the parts such as the packing element heart, top power ring, partition, seal head, cone descending, cone struts slips, block casing wall, complete work card.Continue descending, cut off shear pin, compression packing element is sealed in oil jacket annular space, the upper and lower annular space of seal pack device.
Deblocking process: upper lifting pipe post, now lug automatically along slope upwards, will reach the home position of the short groove of long and short exchange groove, and packing element restores, packer unfreezing, deblocking
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.
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 (1)
1. a packer, is characterized in that: comprise top connection, seal head, packing element, partition, top power ring, cone, shear pin, slips, spring, pressure ring, lower contact, lug, lug ring, trunnion cup, central tube and slide block; Described top connection is connected with the top of described central tube, described seal head is connected with 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 top power ring, described top power ring is threaded with the top of described cone, is fixed between described cone and described central tube by described shear pin; The bottom of described cone coordinates with described slips, the lower end of described slips is hinged on described slide block, described spring is provided with between described slide block and described central tube, the bottom of slide block is fixed by described pressure ring, described lower contact is fixed on the bottom of described central tube, described lower contact bottom is threaded with described trunnion cup, described lug ring floats and arranges between described central tube and described lower contact, described lug is fixed on described lug ring, the bottom of described central tube is provided with elongated slot and short groove, is communicated with between described elongated slot and short groove by gathering sill.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510932128.6A CN105370242A (en) | 2015-12-14 | 2015-12-14 | Packer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510932128.6A CN105370242A (en) | 2015-12-14 | 2015-12-14 | Packer |
Publications (1)
Publication Number | Publication Date |
---|---|
CN105370242A true CN105370242A (en) | 2016-03-02 |
Family
ID=55372800
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201510932128.6A Pending CN105370242A (en) | 2015-12-14 | 2015-12-14 | Packer |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN105370242A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116427879A (en) * | 2023-03-30 | 2023-07-14 | 淮安市井神钻采机具有限公司 | Packer with simple assembly structure |
-
2015
- 2015-12-14 CN CN201510932128.6A patent/CN105370242A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116427879A (en) * | 2023-03-30 | 2023-07-14 | 淮安市井神钻采机具有限公司 | Packer with simple assembly structure |
CN116427879B (en) * | 2023-03-30 | 2024-05-07 | 淮安市井神钻采机具有限公司 | Packer with simple assembly structure |
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Legal Events
Date | Code | Title | Description |
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C06 | Publication | ||
PB01 | Publication | ||
WD01 | Invention patent application deemed withdrawn after publication | ||
WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160302 |