CN104453772A - Self-sealed compression type packer - Google Patents
Self-sealed compression type packer Download PDFInfo
- Publication number
- CN104453772A CN104453772A CN201410791235.7A CN201410791235A CN104453772A CN 104453772 A CN104453772 A CN 104453772A CN 201410791235 A CN201410791235 A CN 201410791235A CN 104453772 A CN104453772 A CN 104453772A
- Authority
- CN
- China
- Prior art keywords
- leather cup
- lower contact
- well
- inner frame
- frame
- 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
- E21B33/126—Packers; Plugs with fluid-pressure-operated elastic cup or skirt
Abstract
The invention relates to the technical field of oil field oil well drilling and production, in particular to a self-sealed compression type packer. The self-sealed compression type packer comprises an upper joint, a leather cup fixing cap, an inner leather cup frame, an outer leather cup frame, a leather cup, a leather cup compression sleeve, a shear pin, a lower joint, a liquid passing hole, a floating pin, a plugging ball and a ball seat. The upper joint is connected with an oil tube, the inner leather cup frame is fixed to the upper joint, the inner leather cup frame is sleeved with the leather cup, the leather cup fixing cap is fixed to the upper joint and the inner leather cup frame, and the outer leather cup frame and the inner leather cup frame are in threaded connection and are compressed on the upper portion of the leather cup. Before the leather cup on the leather cup type packer is tripped in a well, the expansion part of the leather cup is contracted in a steel body of the packer, and the situation that due to the fact that the leather cup and a well wall abrade and bump when the leather cup descends the well, the leather cup is damaged is avoided. After the leather cup is tripped in the well in place, the compressed leather cup is released, the leather cup expands by itself to be in a self-sealing effect with a well shaft, and therefore the underground work reliability of a tool is guaranteed.
Description
Technical field
The present invention relates to oilfield drilling and production technology field, particularly relate to a kind of from sealed compression packer.
Background technology
When the underground work such as well fracturing, acidifying, cup packer using as a kind of conventional underground operation tool, as the packer etc. of the types such as Y531.Now comparatively common cup packer is generally adopted in two ways in practice, one: leather cup is at expansion state lower going-into-well, in process of going into the well, leather cup skirt section hermetic unit and the borehole wall produce and wear and tear and cause damaging by colliding with during casing coupling, enter to need after well puts in place often to occur sealing insecure phenomenon during its work.Two: leather cup is contracted in wedging ring, when needing its work, aboveground pitching promotes elastic ball by the mode that oil pipe is suppressed and to sit down row, take at elastic ball and be provided with trundle and be connected with wedging ring, there is trundle to drive wedging ring to produce displacement and reach the object discharging leather cup, but this kind of mode produces damage with effectively avoiding leather cup in the process of going into the well, but elongated hole must be had on packer central tube at the trundle that elastic ball is taken and can reach the object be connected with wedging ring, therefore packer bottom is in oil jacket UNICOM state, in pressing crack construction, packer bottom is once generation sand plug phenomenon, discharged by elongated hole by the highly pressurised liquid of aboveground input oil pipe, the phenomenon easily causing occurring that fluid power cuts and causing the accident.Particularly be not suitable for multilevel hierarchy operation, because of in multilevel hierarchy operation, can complete under necessarily requiring the above tubing string of work layer and instrument to keep oil jacket to be in closed state.Therefore because the defect of said structure by oil jacket UNICOM limits.
Summary of the invention
The object of the invention is to the deficiency overcoming above-mentioned technology, and provide a kind of from sealed compression packer, on the basis not changing former work flow, reach the requirement that the complete hermetic object of packer central tube also can realize multilayer operation.
The present invention for achieving the above object, by the following technical solutions: a kind of from sealed compression packer, comprise top connection, leather cup locking cap, leather cup inner frame, leather cup purchasing ore, leather cup, leather cup wedging ring, shear pin, lower contact, liquid pass hole, float pin, ball sealer and ball seat; Described top connection is connected with oil pipe, described leather cup inner frame is fixed in described top connection, described leather cup is socketed on described leather cup inner frame, described leather cup locking cap is fixed on described top connection and leather cup inner frame, and described leather cup purchasing ore is threaded with described leather cup inner frame and compresses described leather cup top; Described leather cup wedging ring top coordinates with described leather cup bottom, described leather cup wedging ring is connected with described lower contact by described shear pin, described lower contact and described top connection bottom affixed, the bottom of described lower contact is provided with described liquid pass hole, described floating pin is arranged on below described liquid pass hole and coordinates with described lower contact, the tapered ball seat with being arranged on described lower contact inside in described floating pin one end coordinates, the other end of described floating pin and the fit inside of described leather cup wedging ring, with ladder platform in the middle part of described leather cup wedging ring; Described ball sealer coordinates with described ball seat, and the bottom of described lower contact is provided with stop collar, and described stop collar is fixed by jackscrew and described lower contact.
Preferably, the first sealing ring is provided with between described leather cup inner frame and described top connection; Be provided with the second sealing ring on the top of described ladder platform between described leather cup wedging ring and described lower contact, the bottom of ladder platform is provided with the 3rd sealing ring; The 4th sealing ring is provided with between described ball seat and described lower contact.
The invention has the beneficial effects as follows: leather cup expansion is contracted in packer steel body before entering well by the leather cup on cup packer, prevents from producing with the borehole wall to wear and tear and collide with in the process of going into the well causing damaging.Enter after well puts in place and again the leather cup of compression is discharged, make its expansion voluntarily form self-styled effect with pit shaft, thus the reliability of the instrument of guarantee when underground work, packer central tube can seal completely, is applicable to multistage operation.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is working state schematic representation of the present invention;
In figure: 1, top connection; 2, leather cup fixedly emits; 3, leather cup inner frame; 3-1 first sealing ring; 4, leather cup purchasing ore; 5, leather cup; 6, leather cup wedging ring; 6-1, the 3rd sealing ring; 7, shear pin; 8, lower contact; 8-1, the second sealing ring; 8-2 liquid pass hole; 9, float pin; 10, ball sealer; 11, ball is sat; 11-1, the 4th sealing ring; 12, jackscrew; 13, stop collar.
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 shown in Figure 1, a kind of from sealed compression packer, comprise top connection 1, leather cup locking cap 2, leather cup inner frame 3, leather cup purchasing ore 4, leather cup 5, leather cup wedging ring 6, shear pin 7, lower contact 8, liquid pass hole 8-2, float pin 9, ball sealer 10 and ball seat 11; Described top connection is connected with oil pipe, described leather cup inner frame is fixed in described top connection, described leather cup is socketed on described leather cup inner frame, described leather cup locking cap is fixed on described top connection and leather cup inner frame, and described leather cup purchasing ore is threaded with described leather cup inner frame and compresses described leather cup top; Described leather cup wedging ring top coordinates with described leather cup bottom, described leather cup wedging ring is connected with described lower contact by described shear pin, described lower contact and described top connection bottom affixed, the bottom of described lower contact is provided with described liquid pass hole, described floating pin is arranged on below described liquid pass hole and coordinates with described lower contact, the tapered ball seat with being arranged on described lower contact inside in described floating pin one end coordinates, the other end of described floating pin and the fit inside of described leather cup wedging ring, with ladder platform in the middle part of described leather cup wedging ring; Described ball sealer coordinates with described ball seat, and the bottom of described lower contact is provided with stop collar 13, and described stop collar is fixed by jackscrew 12 and described lower contact.
Ball is sat the inside being placed in packer lower contact, ball is taken and is provided with sealing ring and conical surface blind hole, and lower contact is provided with circular hole, places the pin that floats in circular hole.The inner of steady pin is cone structure, the conical surface blind hole that its conical surface and ball are taken is coincide, the outer end of steady pin be the endoporus undergauge face on arc surface and leather cup wedging ring coincide formed spacing, the second sealing ring 8-1 and the 3rd sealing ring 6-1 is respectively equipped with top outer shroud week, the liquid pass hole road in closed lower contact and the pin that floats in leather cup wedging ring endoporus bottom and lower contact.Utilize the spacing ring restriction leather cup wedging ring stroke screwed in lower contact.The first sealing ring 3-1 is provided with between described leather cup inner frame and described top connection; The 4th sealing ring 11-1 is provided with between described ball seat and described lower contact.
Its operating principle is: dispenser enters after well puts in place, aboveground input ball sealer 10, dropping on ball sits on 11, aboveground injection highly pressurised liquid, through liquid pass hole 8-2, act on the inner chamber of leather cup wedging ring, make its pressure-bearing descending, break shear pin 7, leather cup is discharged from wedging ring, expansion is identical with internal surface of sleeve pipe voluntarily under the effect of its own resilient for leather cup, and form interference seal, leather cup wedging ring 6 continues descending, the pin 9 that floats loses restriction, enter into leather cup wedging ring inner chamber by ladder platform, ball is let sth. slip by location, together drops in screen casing together with ball sealer.Leather cup expansion is contracted in packer steel body before entering well by the leather cup on cup packer, prevents from producing with the borehole wall to wear and tear and collide with in the process of going into the well causing damaging.Enter after well puts in place and again the leather cup of compression is discharged, make its expansion voluntarily form self-styled effect with pit shaft, thus the reliability of the instrument of guarantee when underground work.
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 (2)
1. from a sealed compression packer, it is characterized in that: comprise top connection, leather cup locking cap, leather cup inner frame, leather cup purchasing ore, leather cup, leather cup wedging ring, shear pin, lower contact, liquid pass hole, float pin, ball sealer and ball seat; Described top connection is connected with oil pipe, described leather cup inner frame is fixed in described top connection, described leather cup is socketed on described leather cup inner frame, described leather cup locking cap is fixed on described top connection and leather cup inner frame, and described leather cup purchasing ore is threaded with described leather cup inner frame and compresses described leather cup top; Described leather cup wedging ring top coordinates with described leather cup bottom, described leather cup wedging ring is connected with described lower contact by described shear pin, described lower contact and described top connection bottom affixed, the bottom of described lower contact is provided with described liquid pass hole, described floating pin is arranged on below described liquid pass hole and coordinates with described lower contact, the tapered ball seat with being arranged on described lower contact inside in described floating pin one end coordinates, the other end of described floating pin and the fit inside of described leather cup wedging ring, with ladder platform in the middle part of described leather cup wedging ring; Described ball sealer coordinates with described ball seat, and the bottom of described lower contact is provided with stop collar, and described stop collar is fixed by jackscrew and described lower contact.
2. according to claim 1 from sealed compression packer, it is characterized in that: between described leather cup inner frame and described top connection, be provided with the first sealing ring; Be provided with the second sealing ring on the top of described ladder platform between described leather cup wedging ring and described lower contact, the bottom of ladder platform is provided with the 3rd sealing ring; The 4th sealing ring is provided with between described ball seat and described lower contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410791235.7A CN104453772A (en) | 2014-12-18 | 2014-12-18 | Self-sealed compression type packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410791235.7A CN104453772A (en) | 2014-12-18 | 2014-12-18 | Self-sealed compression type packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104453772A true CN104453772A (en) | 2015-03-25 |
Family
ID=52900448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410791235.7A Pending CN104453772A (en) | 2014-12-18 | 2014-12-18 | Self-sealed compression type packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104453772A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963652A (en) * | 2015-06-30 | 2015-10-07 | 中国石油集团渤海钻探工程有限公司 | Self-sealing compressed packer |
| CN116481931A (en) * | 2023-06-26 | 2023-07-25 | 沧州市德泰克钻井装备有限公司 | Multistage blowout preventer shutoff pressure testing device |
-
2014
- 2014-12-18 CN CN201410791235.7A patent/CN104453772A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963652A (en) * | 2015-06-30 | 2015-10-07 | 中国石油集团渤海钻探工程有限公司 | Self-sealing compressed packer |
| CN116481931A (en) * | 2023-06-26 | 2023-07-25 | 沧州市德泰克钻井装备有限公司 | Multistage blowout preventer shutoff pressure testing device |
| CN116481931B (en) * | 2023-06-26 | 2023-09-22 | 沧州市德泰克钻井装备有限公司 | Multistage blowout preventer shutoff pressure testing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150325 |
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| WD01 | Invention patent application deemed withdrawn after publication |