CN105604520A - Packer with function of pressure relief protection - Google Patents
Packer with function of pressure relief protection Download PDFInfo
- Publication number
- CN105604520A CN105604520A CN201610063700.4A CN201610063700A CN105604520A CN 105604520 A CN105604520 A CN 105604520A CN 201610063700 A CN201610063700 A CN 201610063700A CN 105604520 A CN105604520 A CN 105604520A
- Authority
- CN
- China
- Prior art keywords
- packer
- blanking plug
- decompression protection
- oil
- seating nipple
- 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
Landscapes
- 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)
- Pipe Accessories (AREA)
Abstract
The invention relates to a packer with a function of pressure relief protection. The traditional packer only has a function of packing an oil layer; when a well is repaired, downhole tools and the packer are needed to be lifted out one by one; in order to prevent oil-water mixture from overflowing from the mouth of the well when the pressure in an oil pipe is too high, an oil drainage device is additionally arranged at the upper part of the packer, so that the aim of environmental protection is achieved; however, equipment investment and operation cost are increased, and operation difficulty is also increased; the technical scheme of the packer with the function of pressure relief protection is as follows: a pressure relief protection device (an upper connector) is arranged at one end of the packer, and the end is upturned when the packer works; the pressure relief protection device comprises a working barrel, a blowout prevention piston, a connector and a blanking plug; the external diameter of the working barrel is equal to that of the packer; the connector is inserted into the working barrel; the lower end of the connector is provided with the blowout prevention piston; the blanking plug is formed by a valve ball, pressing cap and a sealing head for the blanking plug.
Description
Technical field
The invention belongs to producing well crude oil production facility technical field, is that one can decompression protection packer specifically.
Background technology
Oil well is fecund oil at present, usually in selected stratum, adopts the process of displacement of reservoir oil by filling water to recover the oil. Therefore be provided with well oil well is other, because well internal pressure is generally higher than oil well, causes and in the time of workover treatment, have a large amount of fluid oil aqueous mixtures ejection well heads, this is by environment and cause a large amount of wastings of resources and economic loss. Generation people for fear of this situation are provided with offloading facilities in well, and have increased oil proof equipment.
Existing well blowout preventing method is in oil pipe, to throw in dead mouthpiece, blocks oil pipe, prevents oil water mixture ejection well head. But because the structure problem of the production mandrel and the blanking plug that use causes sealing property reduction, when blocking oil pipe, also can cause overpressure to continue to raise, make blanking plug or the oil pipe well head of scurrying out, thereby cause liquid in pipe to vomit, not only can not reach the effect of blowout prevention, polluted greatly on the contrary environment and caused personal injury.
Packer is that oil field is for formation testing/oil recovery/water filling and the requisite downhole tool of oil formation improvement. Traditional packer only has the effect of oil-separating layer, in the time of well workover, downhole tool and packer need to be proposed one by one, for pre-preventing oil pipe internal pressure is overflowed well head by oil water mixture when excessive, draining equipment need to be increased on packer top, to reach environmental protection object; But input and operating cost that this has not only increased equipment, also increased the difficulty of operation. And along with the increase of draining and blowout control equipment, cause cost for oil production to rise, and follow more accident potential, strengthen the difficulty of fixing a breakdown simultaneously, increase the number of times of workover treatment, the workover treatment time.
Summary of the invention
The object of this invention is to provide one can decompression protection packer.
The object of the present invention is achieved like this, and it comprises: packer, is characterized in that: packer when work one end be upward provided with decompression protection device (top connection); Described decompression protection device is made up of seating nipple, blowout prevention piston, joint and blanking plug, and described seating nipple external diameter is identical with packer external diameter, and joint inserts in seating nipple, and joint lower end is provided with blowout prevention piston; Described blanking plug is made up of with seal head valve ball, pressure cap and blanking plug.
On described seating nipple, be also provided with pressure release pin hole.
Described blowout prevention piston is loop configuration, and footpath and external diameter surface are provided with some slotted eyes therein, and external diameter slotted eye is corresponding with pressure release pin hole.
On described seating nipple, be provided with the pressure release pin hole of two even cloth.
Between seating nipple and decompression protection device, O-ring seals is installed.
Blanking plug is with being provided with two O-ring seals between seal head and the inwall of decompression protection device.
Advantage of the present invention is: make packer on the basis of blowout prevention, blanking plug top oil liquid in pipe can be let out in set meal, while having prevented pipe, liquid in pipe flows out, and causes secondary pollution; Meanwhile, after change, structure is simpler, and reliability is higher.
Blanking plug seal nipple is valve ball structure, if overpressure is excessive, valve ball is up, seals body passageways, reach blowout prevention object, when overpressure reduces, valve ball is descending, and blanking plug body passageways is opened, blanking plug upper end liquid can flow back in well, prevent from carrying on oil pipe too fast, make liquid band flowline, cause secondary pollution.
Brief description of the drawings
Fig. 1 is structural representation sketch of the present invention.
The present invention is described in further detail by example below in conjunction with accompanying drawing, but following example is only the present invention's example wherein, do not represent the right protection scope that the present invention limits, the scope of the present invention is as the criterion with claims.
Detailed description of the invention
Example 1
When packer 9 is worked, one end is upward provided with decompression protection device (top connection) 1; Described decompression protection device is made up of seating nipple 2, blowout prevention piston 8, joint and blanking plug 6, and described seating nipple external diameter is identical with packer external diameter, and joint inserts in seating nipple, and joint lower end is provided with blowout prevention piston; Described blanking plug is made up of with seal head 3 valve ball 4, pressure cap 5 and blanking plug.
On described seating nipple, be also provided with pressure release pin hole 7.
Described blowout prevention piston is loop configuration, and footpath and external diameter surface are provided with some slotted eyes therein, and external diameter slotted eye is corresponding with pressure release pin hole.
On described seating nipple, be provided with the pressure release pin hole of two even cloth.
Between seating nipple and decompression protection device, O-ring seals is installed.
Blanking plug is with being provided with two O-ring seals between seal head and the inwall of decompression protection device.
In use, by decompression protection device upper end arrange Taper Pipe internal thread be connected with oil pipe, the seating nipple of decompression protection device lower end and packer be threaded connection and pass through O shape rubber sealing. Wherein the lower surface of decompression protection device is seam; Assembling blowout prevention piston in seating nipple, by decompression protection device along two pressure release pins of circumference symmetry by blowout prevention piston axial restraint, seating nipple inside is provided with two fluid holes uniform on circumference; Fluid hole is positioned on the circumferential position that becomes 90 degree directions with pressure release pin. Blanking plug Special seal joint bottom cylindrical is provided with twice O shape cushion rubber, and blanking plug is connected with pressure cap external screw thread with seal nipple lower end internal thread, and pressure cap end face has several through holes, and blanking plug is equipped with valve ball with seal nipple lower end. Blanking plug is assembled in decompression protection device.
Before workover rig service to oil well lift pipe string, this device plays blowout prevention effect. Suppressed in oil pipe by oil pipe upper end, in the time that pressure reaches certain numerical value, pressure release pin is subject to shear stress excessive and fracture, and because top pressure is excessive, causes blowout prevention descent of piston certain distance, and inlet opening and body passageways B are communicated with; If below pressure is excessive in pipe, valve ball is up, seals body passageways B, and oil water mixture can not be sprayed; Below in pipe, pressure reduces, and valve ball is descending, and blanking plug body passageways B opens, and blanking plug upper end liquid can flow back in well, carries too fastly by liquid band flowline on house oil pipe, causes again pollution.
Claims (6)
1. can a decompression protection packer, it comprises: packer, is characterized in that: when packer work, one end is upward provided with decompression protection device (top connection); Described decompression protection device is made up of seating nipple, blowout prevention piston, joint and blanking plug, and described seating nipple external diameter is identical with packer external diameter, and joint inserts in seating nipple, and joint lower end is provided with blowout prevention piston; Described blanking plug is made up of with seal head valve ball, pressure cap and blanking plug.
2. one according to claim 1 can decompression protection packer, it is characterized in that: on described seating nipple, be also provided with pressure release pin hole.
3. one according to claim 1 can decompression protection packer, it is characterized in that: described blowout prevention piston is loop configuration, and footpath and external diameter surface are provided with some slotted eyes therein, and external diameter slotted eye is corresponding with pressure release pin hole.
4. one according to claim 1 can decompression protection packer, it is characterized in that: the pressure release pin hole that is provided with two even cloth on described seating nipple.
5. one according to claim 1 can decompression protection packer, it is characterized in that: between seating nipple and decompression protection device, O-ring seals is installed.
6. one according to claim 1 can decompression protection packer, it is characterized in that: between blanking plug seal head and the inwall of decompression protection device, be provided with two O-ring seals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610063700.4A CN105604520A (en) | 2016-01-31 | 2016-01-31 | Packer with function of pressure relief protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610063700.4A CN105604520A (en) | 2016-01-31 | 2016-01-31 | Packer with function of pressure relief protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105604520A true CN105604520A (en) | 2016-05-25 |
Family
ID=55984806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610063700.4A Pending CN105604520A (en) | 2016-01-31 | 2016-01-31 | Packer with function of pressure relief protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105604520A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108150132A (en) * | 2018-02-26 | 2018-06-12 | 西南石油大学 | A kind of deep water hydrocarbon test, which is held, stays device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2283940C1 (en) * | 2005-02-22 | 2006-09-20 | Открытое акционерное общество "Татнефть" им. В.Д. Шашина | Casing pipe air-tightness control device |
| CN201193506Y (en) * | 2008-04-30 | 2009-02-11 | 大庆油田有限责任公司 | Blowout prevention pressure test oil drainage switch |
| CN201439700U (en) * | 2009-06-27 | 2010-04-21 | 大庆油田有限责任公司 | Blowout-prevention working valve barrel |
| CN102606108A (en) * | 2012-04-01 | 2012-07-25 | 中国石油集团西部钻探工程有限公司 | Pitching pressure-out opening oil tube constant-pressure floating valve |
| CN202914018U (en) * | 2012-11-08 | 2013-05-01 | 中国石油化工股份有限公司 | Pressure test anti-spraying multifunctional plug |
| CN204327032U (en) * | 2014-11-10 | 2015-05-13 | 中国石油化工股份有限公司 | A kind of blanking plug and use the blowout prevention assembly of this blanking plug |
| CN105201454A (en) * | 2015-09-01 | 2015-12-30 | 中国石油天然气股份有限公司 | Blowout-preventive multifunctional tail pipe for water injection well |
-
2016
- 2016-01-31 CN CN201610063700.4A patent/CN105604520A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2283940C1 (en) * | 2005-02-22 | 2006-09-20 | Открытое акционерное общество "Татнефть" им. В.Д. Шашина | Casing pipe air-tightness control device |
| CN201193506Y (en) * | 2008-04-30 | 2009-02-11 | 大庆油田有限责任公司 | Blowout prevention pressure test oil drainage switch |
| CN201439700U (en) * | 2009-06-27 | 2010-04-21 | 大庆油田有限责任公司 | Blowout-prevention working valve barrel |
| CN102606108A (en) * | 2012-04-01 | 2012-07-25 | 中国石油集团西部钻探工程有限公司 | Pitching pressure-out opening oil tube constant-pressure floating valve |
| CN202914018U (en) * | 2012-11-08 | 2013-05-01 | 中国石油化工股份有限公司 | Pressure test anti-spraying multifunctional plug |
| CN204327032U (en) * | 2014-11-10 | 2015-05-13 | 中国石油化工股份有限公司 | A kind of blanking plug and use the blowout prevention assembly of this blanking plug |
| CN105201454A (en) * | 2015-09-01 | 2015-12-30 | 中国石油天然气股份有限公司 | Blowout-preventive multifunctional tail pipe for water injection well |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108150132A (en) * | 2018-02-26 | 2018-06-12 | 西南石油大学 | A kind of deep water hydrocarbon test, which is held, stays device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160525 |
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| WD01 | Invention patent application deemed withdrawn after publication |