CN105927184A - Gravity open type cement head - Google Patents
Gravity open type cement head Download PDFInfo
- Publication number
- CN105927184A CN105927184A CN201610293471.5A CN201610293471A CN105927184A CN 105927184 A CN105927184 A CN 105927184A CN 201610293471 A CN201610293471 A CN 201610293471A CN 105927184 A CN105927184 A CN 105927184A
- Authority
- CN
- China
- Prior art keywords
- backing pin
- cementing head
- rotary shaft
- stop pin
- box
- 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
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices, or the like
Abstract
The invention provides a gravity open type cement head. The gravity open type cement head comprises a cavity cement head body. One side of the middle of the cement head body communicates with a cavity stop pin body. The stop pin body is internally provided with a rotating shaft. A limiting boss is fixedly connected to one end of the rotating shaft. The end surface of the limiting boss is arranged in a cavity of the stop pin body. A hand wheel is fixedly connected to the other end of the rotating shaft. A rotating limiting mechanism is fixedly connected to the hand wheel. The position, symmetrical to the stop pin body, of the cement head body communicates with a stop pin box. The stop pin box is internally provided with a horizontal stop pin rotating shaft perpendicular to the axis of the rotating shaft. The two ends of the stop pin rotating shaft are connected with box wall shafts on the two sides of the stop pin box. A stop pin position indicator is fixedly connected to one end of the stop pin rotating shaft and arranged outside the stop pin box. According to the gravity open type cement head, after a stop pin is opened, instant opening can be achieved through self weight of the stop pin and self weight of a rubber plug, the rubber plug is released, and the situation that the rubber plug is scratched during descending is avoided.
Description
Technical field
The invention belongs to petroleum gas cementing unit technical field, especially relate to a kind of gravity open-type
Cementing head.
Background technology
In the prior art, well cementing operation generally uses cementing head to discharge plug efficiently, it is achieved top
For operation.The most conventional cementing head uses spiral shelves pin mechanism, spiral shelves pin mechanism to pass through mostly
Steep-pitch thread is attached with urceolus, and needing to rotate tens circles during release plug could could sell out shelves
Periostracum Cicadae goes out, and during execute-in-place, when shelves pin is in half retracted state, plug will be descending, at this moment shelves pin
The most all regain, it is easy to hang bad plug, cause construction accident.
Also have a kind of shelves pin craspedodrome device, although the quick unlatching of shelves pin can be realized, but due to its structure
Design defect, shelves pin first half is hollow-core construction, and in actual use, hollow shelves pin is easy to damage,
Cause opening, cause construction accident.
Summary of the invention
In view of this, it is contemplated that propose a kind of gravity open-type cementing head, the shelves pin of cementing head is opened
After, utilize the deadweight of shelves pin and plug to realize moment unlatching, discharge plug, will not hang when plug is descending
Bad plug, shelves pin is solid material, can bear bigger suction force, safe and reliable.
For reaching above-mentioned purpose, the technical scheme is that and be achieved in that:
A kind of gravity open-type cementing head, including:
Cavity cementing head body, in the middle part of described cementing head body, side is communicated with cavity backing pin body, described
This internal rotary shaft that is provided with of backing pin, described rotary shaft one end is connected with positive stop lug boss, described positive stop lug boss
End face is placed in the cavity of backing pin body, and the other end of described rotary shaft is connected with handwheel, on described handwheel
It is connected with rotary position-limit mechanism；
Be communicated with backing pin box on the cementing head body of backing pin body symmetric position, be provided with in described backing pin box
Level and the backing pin rotary shaft vertical with the axis of rotary shaft, the two ends of described backing pin rotary shaft and backing pin box
The box wall axle of both sides connects, and one end of described backing pin rotary shaft is connected with backing pin position indicator, described gear
Pin position indicator is placed in outside backing pin box；
Being fixedly connected with backing pin bar in described backing pin rotary shaft, described backing pin rotary shaft can drive backing pin bar to exist
Rotate in the cavity of cementing head body, when described backing pin bar is horizontal, the axis of backing pin bar and rotation
The dead in line of rotating shaft, and one end of backing pin bar is overlapped on positive stop lug boss, when backing pin bar is by horizontal level
In the path moved downward, it is provided with inside backing pin body and cementing head body junction and dodges passage.
Further, the outside screw of described backing pin body connects backing pin cap, is placed in backing pin Body Lumen
It is cased with retaining bearing in interior rotary shaft.
Further, described backing pin rotary shaft is respectively equipped with backing pin bearing and sealing with the junction of backing pin box
Mechanism.
Further, described cementing head body upper end is connected with cementing head top cover, on described cementing head body
Portion has tamponade circulation port, and described cementing head body interior is provided with retaining push rod, the one of described retaining push rod
Holding affixed with cementing head top cover, the other end end top of described retaining push rod is less than the minimum point of tamponade circulation port.
Further, described cementing head body lower end is connected with cementing head lower contact.
Further, described positive stop lug boss is arc.
Further, described backing pin bar is solid material.
Further, described cementing head body lower part has note ash hole.
Relative to prior art, a kind of gravity open-type cementing head of the present invention has the advantage that
Gravity open-type cementing head simple in construction of the present invention, only need to rotate 180 ° by positive stop lug boss
The most releasable plug is descending, thus realizes the quick unlatching of cementing head, and protection plug is not hung bad, this water
The backing pin bar instruction device of mud head design can conveniently observe shelves pin rod location, and cementing head is adopted
Use inner equilibrium mode, and shelves pin rod uses thicker solid material, it is ensured that shelves pin rod was using
Journey will not be damaged, bigger suction force can be born, safe and reliable.
Accompanying drawing explanation
The accompanying drawing of the part constituting the present invention is used for providing a further understanding of the present invention, the present invention's
Schematic description and description is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.?
In accompanying drawing:
Fig. 1 is the cementing head closed mode structural representation described in the embodiment of the present invention；
Fig. 2 is the cementing head opening structural representation described in the embodiment of the present invention.
Description of reference numerals:
1-cementing head top cover；2-retaining push rod；3-tamponade circulation port；4-cementing head body；5-shelves pin is originally
Body；51-dodges passage；6-shelves pin cap；7-rotary shaft；71-positive stop lug boss；8-retaining bearing；9-hands
Wheel；10-rotary position-limit mechanism；11-backing pin box；12-backing pin bar；13-backing pin rotary shaft；14-backing pin
Bearing；15-sealing mechanism；16-backing pin position indicator；17-note ash hole；18-cementing head lower contact；
19-plug.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in the present invention and the spy in embodiment
Levy and can be mutually combined.
In describing the invention, it is to be understood that term " " center ", " longitudinally ", " laterally ",
On " ", D score, "front", "rear", "left", "right", " vertically ", " level ",
" push up ", " end ", " interior ", the orientation of the instruction such as " outward " or position relationship be for based on shown in accompanying drawing
Orientation or position relationship, be for only for ease of the description present invention and simplifying and describe rather than instruction or dark
Show that device or the element of indication must have specific orientation, with specific azimuth configuration and operation, therefore
It is not considered as limiting the invention.Additionally, term " first ", " second " etc. are only used for describing
Purpose, and it is not intended that instruction or hint relative importance or implicit indicate indicated technical characteristic
Quantity.Thus, the feature defining " first ", " second " etc. can be expressed or impliedly wrap
Include one or more this feature.In describing the invention, except as otherwise noted, " multiple "
It is meant that two or more.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term
" install ", " being connected ", " connection " should be interpreted broadly, and connect, also for example, it may be fixing
Can be to removably connect, or be integrally connected；Can be to be mechanically connected, it is also possible to be electrical connection；Can
Being to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be the connection of two element internals.
For the ordinary skill in the art, can understand that above-mentioned term is in the present invention by concrete condition
In concrete meaning.
Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
As shown in Figure 1-2, a kind of gravity open-type cementing head, including:
Cavity cementing head body 4, in the middle part of described cementing head body 4, side is communicated with cavity backing pin body 5,
Being provided with rotary shaft 7 in described backing pin body 5, described rotary shaft 7 one end is connected with arc-shaped limit boss 71,
The end face of described positive stop lug boss 71 is placed in the cavity of backing pin body 5, the other end of described rotary shaft 7
It is connected with handwheel 9, described handwheel 9 is connected with rotary position-limit mechanism 10, the outside spiral shell of backing pin body 5
Stricture of vagina connects backing pin cap 6, is placed in the rotary shaft 7 in backing pin body 5 cavity and is cased with retaining bearing 8；
Be communicated with backing pin box 11, described backing pin box on the cementing head body 4 of backing pin body 5 symmetric position
Level and the backing pin rotary shaft 13 vertical with the axis of rotary shaft 7, described backing pin rotary shaft it is provided with in 11
The two ends of 13 are connected with the box wall axle of backing pin box 11 both sides, described backing pin rotary shaft 13 and backing pin box 11
Junction be respectively equipped with backing pin bearing 14 and sealing mechanism 15, one end of described backing pin rotary shaft 13 is solid
Being connected to backing pin position indicator 16, described backing pin position indicator 16 is placed in outside backing pin box 11；
Solid backing pin bar 12, described backing pin rotary shaft 13 it is fixedly connected with in described backing pin rotary shaft 13
Backing pin bar 12 can be driven to rotate in the cavity of cementing head body 4, and described backing pin bar 12 is in horizontal position
When putting, the dead in line of the axis of backing pin bar 12 and rotary shaft 7, and one end of backing pin bar 12 is overlapped on
On positive stop lug boss 71, when in the path that backing pin bar 12 is moved downward by horizontal level, backing pin body 5 with
It is provided with inside cementing head body 4 junction and dodges passage 51.
The work process of the present embodiment: gravity open-type cementing head uses inner equilibrium mode, cementing head body
4 internal diameters are more than plug 19 external diameter, it is simple to plug enters for 19 times, and retaining push rod 2 length circulates less than tamponade
Hole 3, carries out location and limits plug 19；
When laying plug 19, shelves pin position indicator 16 is horizontal, simultaneously rotation hand wheel 9 to
Rotary position-limit mechanism 10 lower end, the now semicircle positive stop lug boss 71 of rotary shaft 7 left end and shelves pin rod 12
Laminating, limits shelves pin rod 12 and moves downward, and now cement first gear pin is closed；
When needs release plug 19 time, handwheel 9 rotate 180 ° to rotary position-limit mechanism 10 upper end, band
Dynamic rotary shaft 7 rotates 180 °, and semicircle positive stop lug boss 71 rotates to grade pin rod 12 top, discharges shelves
Pin rod 12, shelves pin rod 12 relies on self and plug 19 gravity, is rotated down around shelves pin rotary shaft 13
90 ° enter shelves pin box 11, and plug 19 continues traveling downwardly, and carries out well cementing operation；
Shelves pin rotary shaft 13 is designed with sealing mechanism 15 and shelves pin bearing 14 with shelves pin box 11 junction,
When shelves pin rod 12 rotates very easily, self gravitation can be relied on to realize rotating, shelves pin position indicator 16
It is connected to shelves pin box 11 outside by shelves pin rotary shaft 13, when shelves pin rod 12 is closed,
Shelves pin position indicator 16 is horizontal；When shelves pin rod 12 is in opening, shelves pins position puts finger
Show that device 16 is in vertical position, the state of grade pin rod 12 can be observed very easily.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this
Within the spirit of invention and principle, any modification, equivalent substitution and improvement etc. made, should be included in
Within protection scope of the present invention.
Claims (8)
1. a gravity open-type cementing head, it is characterised in that including:
Cavity cementing head body (4), side, described cementing head body (4) middle part is communicated with cavity backing pin
Body (5), is provided with rotary shaft (7), described rotary shaft (7) one end in described backing pin body (5)
Being connected with positive stop lug boss (71), the end face of described positive stop lug boss (71) is placed in backing pin body (5)
In cavity, the other end of described rotary shaft (7) is connected with handwheel (9), and described handwheel (9) is upper solid
It is connected to rotary position-limit mechanism (10)；
Be communicated with backing pin box (11) on the cementing head body (4) of backing pin body (5) symmetric position,
Level and the backing pin rotary shaft (13) vertical with the axis of rotary shaft (7) it is provided with in described backing pin box (11),
The two ends of described backing pin rotary shaft (13) are connected with the box wall axle of backing pin box (11) both sides, described backing pin
One end of rotary shaft (13) is connected with backing pin position indicator (16), described backing pin position indicator (16)
It is placed in backing pin box (11) outward；
Backing pin bar (12), described backing pin rotary shaft (13) it is fixedly connected with on described backing pin rotary shaft (13)
Backing pin bar (12) can be driven to rotate in the cavity of cementing head body (4), described backing pin bar (12)
When being horizontal, the axis of backing pin bar (12) and the dead in line of rotary shaft (7), and backing pin
One end of bar (12) is overlapped on positive stop lug boss (71), when backing pin bar (12) is downward by horizontal level
In the path of motion, it is provided with inside backing pin body (5) and cementing head body (4) junction and dodges passage
(51)。
A kind of gravity open-type cementing head the most according to claim 1, it is characterised in that: described
The outside screw of backing pin body (5) connects backing pin cap (6), is placed in backing pin body (5) cavity
Rotary shaft (7) on be cased with retaining bearing (8).
A kind of gravity open-type cementing head the most according to claim 1, it is characterised in that: described
Backing pin rotary shaft (13) is respectively equipped with backing pin bearing (14) with the junction of backing pin box (11) and seals
Mechanism (15).
A kind of gravity open-type cementing head the most according to claim 1, it is characterised in that: described
Cementing head body (4) upper end is connected with cementing head top cover (1), described cementing head body (4) top
Having tamponade circulation port (3), described cementing head body (4) is internal is provided with retaining push rod (2), institute
The one end stating retaining push rod (2) is affixed with cementing head top cover (1), described retaining push rod (2) another
End top, one end is less than the minimum point of tamponade circulation port (3).
A kind of gravity open-type cementing head the most according to claim 1, it is characterised in that: described
Cementing head body (4) lower end is connected with cementing head lower contact (18).
A kind of gravity open-type cementing head the most according to claim 1, it is characterised in that: described
Positive stop lug boss (71) is arc.
A kind of gravity open-type cementing head the most according to claim 1, it is characterised in that: described
Backing pin bar (12) is solid material.
A kind of gravity open-type cementing head the most according to claim 1, it is characterised in that: described
Cementing head body (4) bottom has note ash hole (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610293471.5A CN105927184A (en) | 2016-05-05 | 2016-05-05 | Gravity open type cement head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610293471.5A CN105927184A (en) | 2016-05-05 | 2016-05-05 | Gravity open type cement head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105927184A true CN105927184A (en) | 2016-09-07 |
Family
ID=56834444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610293471.5A Pending CN105927184A (en) | 2016-05-05 | 2016-05-05 | Gravity open type cement head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105927184A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112253043A (en) * | 2020-12-09 | 2021-01-22 | 中国石油天然气集团有限公司 | High-pressure well cementing cement head |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2628205Y (en) * | 2003-07-07 | 2004-07-28 | 上海铁路局科学技术研究所 | Large container type steel rail contact welding operating vehicle |
| WO2015026337A1 (en) * | 2013-08-21 | 2015-02-26 | Halliburton Energy Services, Inc. | Cement head remote control and tracking |
| CN204186347U (en) * | 2014-10-15 | 2015-03-04 | 中国石油集团西部钻探工程有限公司 | Convenient-opening formula instruction cementing head |
| CN205577945U (en) * | 2016-05-05 | 2016-09-14 | 中国石油集团渤海钻探工程有限公司 | Gravity open -type cementing -head |
-
2016
- 2016-05-05 CN CN201610293471.5A patent/CN105927184A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2628205Y (en) * | 2003-07-07 | 2004-07-28 | 上海铁路局科学技术研究所 | Large container type steel rail contact welding operating vehicle |
| WO2015026337A1 (en) * | 2013-08-21 | 2015-02-26 | Halliburton Energy Services, Inc. | Cement head remote control and tracking |
| CN204186347U (en) * | 2014-10-15 | 2015-03-04 | 中国石油集团西部钻探工程有限公司 | Convenient-opening formula instruction cementing head |
| CN205577945U (en) * | 2016-05-05 | 2016-09-14 | 中国石油集团渤海钻探工程有限公司 | Gravity open -type cementing -head |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112253043A (en) * | 2020-12-09 | 2021-01-22 | 中国石油天然气集团有限公司 | High-pressure well cementing cement head |
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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: 20160907 |
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| WD01 | Invention patent application deemed withdrawn after publication |