CN207063942U - A kind of oil field shaft mouth blowout hookup - Google Patents
A kind of oil field shaft mouth blowout hookup Download PDFInfo
- Publication number
- CN207063942U CN207063942U CN201720939645.0U CN201720939645U CN207063942U CN 207063942 U CN207063942 U CN 207063942U CN 201720939645 U CN201720939645 U CN 201720939645U CN 207063942 U CN207063942 U CN 207063942U
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- CN
- China
- Prior art keywords
- polished rod
- plunger
- seal box
- oil field
- diameter
- 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.)
- Expired - Fee Related
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Abstract
It the utility model is related to oil field shaft mouth blowout hookup, belong to the wellhead blowout preventer used in pumping well with pole, particularly a kind of oil field shaft mouth blowout hookup, set in the seal box being fixedly connected on well head, lower annular seal space, seating nipple is connected through a screw thread in the bore of sealing box base lower end, on seal box, by upper in lower annular seal space, lower airtight and watertight padding is engaged with polished rod, on being set on polished rod, lower end marks, duty plunger is connected in the lower end of polished rod, standby plunger is connected to by connecting rod in the lower end of duty plunger, wherein duty plunger diameter is more than polished rod diameter, duty plunger and standby plunger are engaged with seating nipple, it is equal with polished rod diameter to connect shank diameter.Its is rational in infrastructure, dependable performance, with permanent seal well head, can mitigate the pressure-bearing load of higher level's rubber packing, and higher level's seal or maintenance wellhead assembly can be changed under controllable state, avoids blowdown from being vented, realizes safe efficient, environmentally friendly, production energy-saving.
Description
Technical field
Oil field shaft mouth blowout hookup is the utility model is related to, belongs to the wellhead blowout preventer used in pumping well with pole, it is special
It is not a kind of oil field shaft mouth blowout hookup.
Background technology
With the extensive use of the Technology of Heavy Oil Recovery such as steam drive, the formation temperature after long-term steam injection gradually rises,
Producing well liquid temperature degree rises.And there is problems with existing wellhead polish rod seal box：
1, seal is mostly elastomeric material, can not meet long term high temperature requirement.
2, when changing subordinate's seal, valve class crime prevention device can not be installed below seal box, belong to and operated without control, peace be present
Full hidden danger.
3, when changing or overhauling polished rod seal box, in order to ensure safety, it is necessary to using kill-job mode.But well killing fluid can reduce
Downhole temperature, polluted reservoir, have a strong impact on coefficient of mining.
Utility model content
The purpose of this utility model is to provide a kind of oil field shaft mouth blowout hookup, and its is rational in infrastructure, dependable performance, can be with
Permanent seal well head, mitigate the pressure-bearing load of higher level's rubber packing, higher level's seal or maintenance can be changed under controllable state
Wellhead assembly, avoid blowdown from being vented, realize safe efficient, environmentally friendly, production energy-saving.
What the purpose of this utility model was realized in：A kind of oil field shaft mouth blowout hookup, is fixedly connected on well head
Upper and lower annular seal space is set in seal box, seating nipple is connected through a screw thread in the bore of sealing box base lower end, is sealing
It is engaged in the upper and lower annular seal space of box by upper and lower airtight and watertight padding with polished rod, sets upper and lower end to mark on polished rod, in polished rod
Lower end be connected to duty plunger, standby plunger is connected to by connecting rod in the lower end of duty plunger, wherein duty plunger is straight
Footpath is more than polished rod diameter, and duty plunger and standby plunger are engaged with seating nipple, and connection shank diameter is equal with polished rod diameter.
Operation principle of the present utility model：
1, when normally pumping, oil pumper drives the upper and lower motion of polished rod, the sealing inside polished rod and seal box higher level's annular seal space
Filler coordinates, and realizes sealing；
Duty plunger is constantly in seating nipple, and both coordinate, and belongs to metal gap sealing.
（Standby plunger is constantly in outside seating nipple, will not be worn）
At this moment if there is pressure oscillation underground, because duty plunger blocks most of pressure, in seal box cavity
The pressure load that filler is subject to substantially reduces, and greatly prolongs maintenance period；
Because of situations such as hole deviation, if radial deflection phenomenon be present in polished rod, because seating nipple is oval barrel structure, itself tool
There is certain flexibility, can be swung with duty plunger, avoid hard grind phenomenon.If the filler in seal box cavity is using high pressure injection
Agent, it is also possible to prevent eccentric wear.If using gum filler, after eccentric wear occurs, because duty plunger can stop down-hole pressure,
It can change in time, without the operation such as kill-job or blowdown emptying.
2, overhaul well head or change polished rod, duty plunger
When overhauling well head or changing seal box upper parts, polished rod is above carried, after stand-by column enters seating nipple, beaten
Open valve, after verifying underground no pressure.Seal box is loosened, continues above to carry polished rod, until duty plunger exposes.
Connecting rod is blocked with specific purpose tool, falls back to well head, you can carries out service work, or changes polished rod, duty plunger.
Installation method：Downhole oil tubing string installs, the suitable sucker rod connection of quantity, in tripping in tubing string, by this product
Movable part is consecutively connected to rod string, tripping in tubing string.
This product fixed part is sequentially connected, from movable part top, polished rod is inserted in；
Sealing box base is fixedly connected with well head.
The utility model is rational in infrastructure, and dependable performance, its is rational in infrastructure, dependable performance, realizes permanent seal well head, subtracts
The light pressure-bearing load of higher level's rubber packing, realizes and higher level's seal or maintenance wellhead assembly is changed under controllable state, keep away
Exempt from blowdown emptying, realize safe efficient, environmentally friendly, production energy-saving.
Brief description of the drawings
Below in conjunction with accompanying drawing, the utility model will be further described, and Fig. 1 is that front view structure of the present utility model is shown
It is intended to, Fig. 2 is the mplifying structure schematic diagram that seal box connects seating nipple.
Embodiment
A kind of oil field shaft mouth blowout hookup, as shown in Figure 1 and Figure 2, set in the seal box being fixedly connected on well head
Upper and lower annular seal space, seating nipple 10 is connected through a screw thread in the bore of sealing box base 8 lower end, in the upper and lower sealing of seal box
Intracavitary is engaged by upper and lower airtight and watertight padding 4,6 with polished rod 1, upper and lower end mark 2,9 is set on polished rod 1, in polished rod 1
Lower end is connected to duty plunger 11, standby plunger 13 is connected to by connecting rod 12 in the lower end of duty plunger 11, wherein working
The diameter of plunger 11 is more than the diameter of polished rod 1, and duty plunger 11 and standby plunger 13 are engaged with seating nipple 10, the diameter of connecting rod 12 with
The diameter of polished rod 1 is equal.There is the structure of seal box its lower end of seal box under the tubular of assembly cavity to set disk sealing box base
8, lower annular seal space, connecting seat are connected to form by the lower connecting cylinder of screw thread and connecting seat 5 on the outer wall on lower seal box top
The outer wall of seal box connects and composes upper annular seal space by screw thread and the gland 3 with centre bore on the tubular of setting, in upper sealing
Intracavitary sets gradually spring 14, pressure ring 15, upper gland packing 4 and copper sheathing 16, set gradually in lower annular seal space gland 17,
Packing ring 18 and lower airtight and watertight padding 6.The upper and lower airtight and watertight padding 4,6 set in the upper and lower annular seal space of seal box is rubber packing or note
Enter high pressure sealing agent.The position that upper and lower end mark 2,9 is set on the surface of polished rod 1 is when standby plunger 11 enters seating nipple 10
When, the upper end mark 2 on polished rod 1 exposes outside seal box, when duty plunger 1 is improved close to top dead-centre, the lower end mark on polished rod 1
Note 9 is exposed outside seal box.It should be noted herein that slowly, prevent duty plunger overstriking position and sealing box base from colliding.
Air vent is set on the barrel of annular seal space bottom under seal box, vent valve 7 is installed on air vent.
Claims (5)
1. a kind of oil field shaft mouth blowout hookup, it is characterized in that：Upper and lower sealing is set in the seal box being fixedly connected on well head
Chamber, in sealing box base（8）Seating nipple is connected through a screw thread in the bore of lower end（10）, in the upper and lower annular seal space of seal box
Pass through upper and lower airtight and watertight padding（4、6）With polished rod（1）It is engaged, in polished rod（1）On set upper and lower end mark（2、9）, in light
Bar（1）Lower end be connected to duty plunger（11）, in duty plunger（11）Lower end pass through connecting rod（12）It is connected to stand-by column
Plug（13）, wherein duty plunger（11）Diameter is more than polished rod（1）Diameter, duty plunger（11）With standby plunger（13）With seating nipple
（10）It is engaged, connecting rod（12）Diameter and polished rod（1）Diameter is equal.
2. a kind of oil field shaft mouth blowout hookup according to claim 1, it is characterized in that：The structure of seal box is with assembling
Its lower end of seal box sets disk sealing box base under the tubular of chamber（8）, pass through screw thread on the outer wall on lower seal box top
With connecting seat（5）Lower connecting cylinder be connected to form lower annular seal space, the outer wall of seal box passes through spiral shell on the tubular that connecting seat is set
Line and the gland with centre bore（3）Annular seal space is connected and composed, spring is set gradually in upper annular seal space（14）, pressure ring
（15）, upper gland packing（4）And copper sheathing（16）, gland is set gradually in lower annular seal space（17）, packing ring（18）With lower sealing
Filler（6）.
3. a kind of oil field shaft mouth blowout hookup according to claim 1 or 2, it is characterized in that：In the upper and lower annular seal space of seal box
The upper and lower airtight and watertight padding of interior setting（4、6）For rubber packing or injection high pressure sealing agent.
4. a kind of oil field shaft mouth blowout hookup according to claim 1, it is characterized in that：In polished rod（1）On being set on surface,
Lower end marks（2、9）Position be when standby plunger（13）Into seating nipple（10）When, polished rod（1）On upper end mark（2）Dew
Go out outside seal box, work as duty plunger（11）When improving close to top dead-centre, polished rod（1）On lower end mark（9）Expose outside seal box.
5. a kind of oil field shaft mouth blowout hookup according to claim 1, it is characterized in that：The annular seal space bottom under seal box
Air vent is set on barrel, vent valve is installed on air vent（7）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720939645.0U CN207063942U (en) | 2017-07-31 | 2017-07-31 | A kind of oil field shaft mouth blowout hookup |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720939645.0U CN207063942U (en) | 2017-07-31 | 2017-07-31 | A kind of oil field shaft mouth blowout hookup |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207063942U true CN207063942U (en) | 2018-03-02 |
Family
ID=61518228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720939645.0U Expired - Fee Related CN207063942U (en) | 2017-07-31 | 2017-07-31 | A kind of oil field shaft mouth blowout hookup |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207063942U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109184582A (en) * | 2018-09-17 | 2019-01-11 | 克拉玛依胜利高原机械有限公司 | The replaceable assembly of split type polished rod, polished rod and polished rod Replacement procedure |
| CN109322636A (en) * | 2017-07-31 | 2019-02-12 | 克拉玛依胜利高原机械有限公司 | A kind of oil field shaft mouth blowout hookup |
| CN116607908A (en) * | 2023-07-20 | 2023-08-18 | 北京汉诺威自控技术有限公司 | Polished rod structure |
-
2017
- 2017-07-31 CN CN201720939645.0U patent/CN207063942U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109322636A (en) * | 2017-07-31 | 2019-02-12 | 克拉玛依胜利高原机械有限公司 | A kind of oil field shaft mouth blowout hookup |
| CN109184582A (en) * | 2018-09-17 | 2019-01-11 | 克拉玛依胜利高原机械有限公司 | The replaceable assembly of split type polished rod, polished rod and polished rod Replacement procedure |
| CN109184582B (en) * | 2018-09-17 | 2023-09-08 | 克拉玛依胜利高原机械有限公司 | Split polish rod, polish rod replaceable assembly and polish rod replacement process |
| CN116607908A (en) * | 2023-07-20 | 2023-08-18 | 北京汉诺威自控技术有限公司 | Polished rod structure |
| CN116607908B (en) * | 2023-07-20 | 2023-09-29 | 北京汉诺威自控技术有限公司 | Polished rod structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180302 Termination date: 20200731 |