CN202266199U - Hydraulic inner barrel lifting sub - Google Patents
Hydraulic inner barrel lifting sub Download PDFInfo
- Publication number
- CN202266199U CN202266199U CN 201120358441 CN201120358441U CN202266199U CN 202266199 U CN202266199 U CN 202266199U CN 201120358441 CN201120358441 CN 201120358441 CN 201120358441 U CN201120358441 U CN 201120358441U CN 202266199 U CN202266199 U CN 202266199U
- Authority
- CN
- China
- Prior art keywords
- hydraulic
- hydraulic pressure
- lifting sub
- lower contact
- top connection
- 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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- 238000005553 drilling Methods 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of coring in oil and gas drilling engineering and particularly relates to a hydraulic inner barrel lifting sub. The lifting sub is characterized in that an upper hydraulic connector is in threaded connection with a lower hydraulic connector; a hydraulic rod is hung in the upper hydraulic connector and the lower hydraulic connector; an upper annular cavity is formed between the hydraulic rod and the upper hydraulic connector; a lower annular cavity is formed among the hydraulic rod, the upper hydraulic connector and the lower hydraulic connector; a shear pin is inserted into the lower hydraulic connector and a spacing hole at the lower end of the hydraulic rod; a banking pin is in threaded connection with the lower hydraulic connector; and the lower end of the hydraulic rod is provided with a spacing groove which is corresponding to the banking pin. The hydraulic inner barrel lifting sub is simple in structure and high in safety and can be used for overcoming the defects of complex hexagonal rod theory structure and lower safety in an existing lifting sub.
Description
Technical field:
The utility model relates to a kind of oil and gas drilling engineering CORING TECHNOLOGY field, the lifting sub of particularly a kind of hydraulic pressure inner core.
Background technology:
Six square bar principles are mainly adopted in the existing relative lifting sub of coring tool inner core; Inner core is connected on interior six sides; Utilize the own wt of urceolus to realize inner core up with respect to urceolus; This theory structure is complicated and be prone to accidents such as six square bars rupture, six square bar sockets are broken, six square bars locking inefficacy, and the instrument safety is lower.
The utility model content:
The technical problem that the utility model will solve provides the lifting sub of a kind of hydraulic pressure inner core, and this lifting sub has realized simple in structure, and is safe.Overcome existing lifting sub and adopted six square bar theory structure complicacies and the lower deficiency of safety.
The technical scheme that the utility model is taked is: the lifting sub of a kind of hydraulic pressure inner core, form by hydraulic pressure top connection, hydraulic stem, position-limitting pin, hydraulic pressure lower contact and shear pin; The hydraulic pressure top connection is threaded with the hydraulic pressure lower contact, and hydraulic stem is suspended in hydraulic pressure top connection and the hydraulic pressure lower contact, forms between hydraulic stem and the hydraulic pressure top connection and goes up annular space, forms annular space down between hydraulic stem and hydraulic pressure top connection, the hydraulic pressure lower contact; Shear pin inserts in the spacing hole of hydraulic pressure lower contact and hydraulic stem lower end, and position-limitting pin is threaded in the hydraulic pressure lower contact, and the hydraulic stem lower end has and the corresponding limited impression of position-limitting pin.
The beneficial effect of the utility model is: the utility model is gone up annular space owing to having adopted to form between hydraulic stem and the hydraulic pressure top connection; Form the mode of annular space down between hydraulic stem and hydraulic pressure top connection, the hydraulic pressure lower contact, thereby drop into the pressures cycle ball, during circulation canal in the liquid for plugging depression bar; Have on the hydraulic stem of promotion and move; Promote the function of inner core, simple in structure, safe.
Description of drawings:
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is done further detailed explanation.
Accompanying drawing is the structural representation of the utility model.
The specific embodiment:
Shown in accompanying drawing, the lifting sub of a kind of hydraulic pressure inner core is made up of hydraulic pressure top connection 1, hydraulic stem 2, position-limitting pin 4, hydraulic pressure lower contact 5 and shear pin 6; Hydraulic pressure top connection 1 is threaded with hydraulic pressure lower contact 5, and hydraulic stem 2 is suspended in hydraulic pressure top connection 1 and the hydraulic pressure lower contact 5, forms between hydraulic stem 2 and the hydraulic pressure top connection 1 and goes up annular space, forms annular space down between hydraulic stem 2 and hydraulic pressure top connection 1, the hydraulic pressure lower contact 5; Shear pin 6 inserts in the spacing hole of hydraulic pressure lower contact 5 and hydraulic stem 2 lower ends, and position-limitting pin 4 is threaded in the hydraulic pressure lower contact 5, and hydraulic stem 2 lower ends have and position-limitting pin 4 corresponding limited impressions.
During the utility model work; Drop into pressures cycle steel ball 3 at well head, the centre bore on the pressures cycle steel ball 3 liquid for plugging depression bars 2, the annular space place between hydraulic stem 2, hydraulic pressure top connection 1, hydraulic pressure lower contact 5 forms high pressure; This pressure is higher than the pressure that annular space forms between hydraulic stem 2 and the hydraulic pressure top connection 1; Cut off shear pin 6 and move up thereby promote hydraulic stem 2, after hydraulic stem 2 moves up a segment distance, annular pressure equality up and down; Position-limitting pin 4 aligned the limited impression of hydraulic stem 2 lower ends and pinned hydraulic stem 2 this moment, stoped hydraulic stem 2 to move down.
Be with being appreciated that; More than about the specific descriptions of the utility model; Only be used to the utility model is described and be not to be subject to the described technical scheme of the utility model embodiment; Those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the utility model, to reach identical technique effect; As long as satisfy the use needs, all within the protection domain of the utility model.
Claims (1)
1. hydraulic pressure inner core lifting sub is made up of hydraulic pressure top connection (1), hydraulic stem (2), position-limitting pin (4), hydraulic pressure lower contact (5) and shear pin (6); It is characterized in that: hydraulic pressure top connection (1) is threaded with hydraulic pressure lower contact (5); Hydraulic stem (2) is suspended in hydraulic pressure top connection (1) and the hydraulic pressure lower contact (5); Form between hydraulic stem (2) and the hydraulic pressure top connection (1) and go up annular space, form annular space down between hydraulic stem (2) and hydraulic pressure top connection (1), the hydraulic pressure lower contact (5); Shear pin (6) inserts in the spacing hole of hydraulic pressure lower contact (5) and hydraulic stem (2) lower end, and position-limitting pin (4) is threaded in the hydraulic pressure lower contact (5), and hydraulic stem (2) lower end has and the corresponding limited impression of position-limitting pin (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120358441 CN202266199U (en) | 2011-08-28 | 2011-08-28 | Hydraulic inner barrel lifting sub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120358441 CN202266199U (en) | 2011-08-28 | 2011-08-28 | Hydraulic inner barrel lifting sub |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202266199U true CN202266199U (en) | 2012-06-06 |
Family
ID=46156997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120358441 Expired - Fee Related CN202266199U (en) | 2011-08-28 | 2011-08-28 | Hydraulic inner barrel lifting sub |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202266199U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108222854A (en) * | 2016-12-21 | 2018-06-29 | 中国石油天然气股份有限公司 | Stress joint |
| CN108571176A (en) * | 2018-05-10 | 2018-09-25 | 徐东科 | A kind of high stable high building construction protective device |
| CN113356779A (en) * | 2021-07-14 | 2021-09-07 | 西南石油大学 | Coring device and coring method |
-
2011
- 2011-08-28 CN CN 201120358441 patent/CN202266199U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108222854A (en) * | 2016-12-21 | 2018-06-29 | 中国石油天然气股份有限公司 | Stress joint |
| CN108222854B (en) * | 2016-12-21 | 2019-06-11 | 中国石油天然气股份有限公司 | Stress joint |
| CN108571176A (en) * | 2018-05-10 | 2018-09-25 | 徐东科 | A kind of high stable high building construction protective device |
| CN113356779A (en) * | 2021-07-14 | 2021-09-07 | 西南石油大学 | Coring device and coring method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120606 Termination date: 20140828 |
|
| EXPY | Termination of patent right or utility model |