CN111946292A - Telescopic blowout prevention pipe - Google Patents
Telescopic blowout prevention pipe Download PDFInfo
- Publication number
- CN111946292A CN111946292A CN202010938918.6A CN202010938918A CN111946292A CN 111946292 A CN111946292 A CN 111946292A CN 202010938918 A CN202010938918 A CN 202010938918A CN 111946292 A CN111946292 A CN 111946292A
- Authority
- CN
- China
- Prior art keywords
- lubricator
- upper sealing
- central shaft
- joint
- sealing joint
- 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
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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
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
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- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
Abstract
The invention relates to the technical field of lubricators, in particular to a telescopic lubricator which comprises a lubricator, an upper sealing joint, a central shaft and a lower joint, wherein the right end of the lubricator is fixedly provided with the lower joint, the left end of the lubricator is fixedly provided with the upper sealing joint with the inner diameter smaller than that of the lubricator, the inner part of the lubricator is communicated with the inner part of the upper sealing joint left and right, the telescopic lubricator has the advantages of reasonable and compact structure, simple operation and convenient use, because the arrangement of the oil filling port and the oil draining port causes pressure difference in the hydraulic cavity, the central shaft moves left and right in the blowout preventer, the telescopic function can be realized, the right end of the upper sealing joint and the outer ring table of the central shaft are matched for use to play a role in limiting the leftward movement of the central shaft, the inner ring table of the blowout prevention pipe and the outer ring table of the central shaft are matched for use to play a role in limiting the rightward movement of the central shaft, the upper joint is of a male buckle structure, and the lower joint is of a female buckle structure; the design is convenient for quick alignment connection with other equipment.
Description
Technical Field
The invention relates to the technical field of lubricators, in particular to a telescopic lubricator.
Background
The blowout prevention pipe is indispensable well control equipment for completing the stringing of coiled tubing operation tools under the condition that a wellhead is pressurized; when the blowout preventer is used on site at present, the blowout preventer is generally formed by connecting a plurality of blowout preventer pipes, one blowout preventer pipe is rigidly connected with the other blowout preventer pipe through a union or a flange, one end of the blowout preventer pipe is connected with wellhead equipment, and the other end of the blowout preventer pipe is connected with a blowout preventer box arranged on the lower portion of an injection head, so that a sealing space is formed between the blowout preventer box and the wellhead equipment, and the blowout preventer pipe can be pulled off under pressure. When the anti-blowout device is suitable for different tool string lengths, anti-blowout pipes with different lengths need to be combined, and the height position of an injection head needs to be adjusted, so that the position of an anti-blowout box is adjusted to meet the requirements of continuous pipe operation or drilling tool string belt pressing up with different lengths; the prior lubricator has the following defects: firstly, the length of a single blowout preventer in the prior art can not be adjusted, and the prior blowout preventer needs to be matched with a plurality of blowout preventers with different lengths, so that the use is inconvenient; secondly, the field installation workload is large, the labor intensity is high, and the operation is complex; and the height position of the injection head cannot be adjusted, and the blowout prevention pipe, the blowout prevention box and wellhead equipment are in rigid connection and need to be aligned accurately.
Disclosure of Invention
The invention provides a telescopic lubricator, which overcomes the defects of the prior art and can effectively solve the problems that the length of a single lubricator in the prior art can not be adjusted, the field installation workload is large, the labor intensity is high and the operation is complex; the problems that the height position of the injection head cannot be adjusted and the blowout prevention pipe, the blowout prevention box and wellhead equipment need to be accurately aligned to meet the operation requirement due to rigid connection are difficult to adapt to.
The technical scheme of the invention is realized by the following measures: a telescopic blowout preventer comprises a blowout preventer, an upper sealing joint, a central shaft and a lower joint, wherein the right end of the blowout preventer is fixedly provided with the lower joint, the left end of the blowout preventer is fixedly provided with the upper sealing joint with the inner diameter smaller than the inner diameter of the blowout preventer, the interior of the blowout preventer is communicated with the interior of the upper sealing joint in a left-right mode, the right end of the central shaft penetrates through the upper sealing joint and is positioned on the inner side of the middle part of the blowout preventer, the central shaft is a hollow shaft, the left end of the central shaft is fixedly provided with the upper joint positioned on the left side of the upper sealing joint, the outer side of the right part of the central shaft is, an annular hydraulic cavity is formed between the right end face of the upper sealing joint, the outer side of the central shaft and the inner side of the lubricator, an oil filling port and an oil draining port communicated with the hydraulic cavity are arranged at the outer side of the lubricator at intervals, and the outer ring platform moves left and right between the inner ring platform and the right end of the upper sealing joint.
The following is further optimization or/and improvement of the technical scheme of the invention:
the upper connector can be a male buckle structure, and the lower connector can be a female buckle structure.
The lubricator at the position corresponding to the right of the central shaft can be fixedly communicated with a pressure relief opening union.
A plurality of first sealing rings are fixedly mounted on the outer side of the outer ring table at left and right intervals, and a plurality of second sealing rings are fixedly mounted on the inner side of the upper sealing joint at left and right intervals.
The upper sealing joint and the lubricator can be fixedly connected through a flange structure.
The anti-blowout device is reasonable and compact in structure, simple to operate and convenient to use, pressure difference is generated in the hydraulic cavity due to the arrangement of the oil injection port and the oil drainage port, so that the central shaft moves leftwards and rightwards in the anti-blowout pipe, the telescopic function can be realized, the right end of the upper sealing joint and the outer ring table of the central shaft are matched for use to play a role in limiting the movement of the central shaft leftwards, the inner ring table of the anti-blowout pipe and the outer ring table of the central shaft are matched for use to play a role in limiting the movement of the central shaft rightwards, the upper joint is; the design is convenient for fast alignment connection with other equipment, and the invention can be used in series as required.
Drawings
Fig. 1 is a schematic sectional structure view of the main view when the preferred embodiment of the present invention is reset.
The codes in the figures are respectively: the device comprises an upper joint 1, an upper sealing joint 2, an oil filling port 4, a hydraulic cavity 5, a blowout prevention pipe 6, a pressure relief port union 7, a lower joint 8, an inner ring platform 9, a first sealing ring 10, an outer ring platform 11, a central shaft 12, an oil drainage port 13 and a second sealing ring 14.
Detailed Description
The present invention is not limited by the following examples, and specific embodiments may be determined according to the technical solutions and practical situations of the present invention.
In the present invention, for convenience of description, the description of the relative positional relationship of the components is described according to the layout pattern of fig. 1 of the specification, such as: the positional relationship of front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of fig. 1 of the specification.
The invention is further described with reference to the following examples and figures:
as shown in the attached figure 1, the telescopic lubricator comprises a lubricator 6, an upper sealing joint 2, a central shaft 12 and a lower joint 8, wherein the lower joint 8 is fixedly arranged at the right end of the lubricator 6, the upper sealing joint 2 with the inner diameter smaller than that of the lubricator 6 is fixedly arranged at the left end of the lubricator 6, the inner part of the lubricator 6 is communicated with the inner part of the upper sealing joint 2 from left to right, the right end of the central shaft 12 penetrates through the upper sealing joint 2 and is positioned at the inner side of the middle part of the lubricator 6, the central shaft is a hollow shaft, the left end of the central shaft 12 is fixedly provided with the upper joint 1 positioned at the left side of the upper sealing joint 2, the outer side of the right part of the central shaft 12 is fixedly provided with an outer annular table 11, the inner side of the right part of the lubricator 6 is provided with an inner annular hydraulic cavity 5 between the left end face of the outer ring 11, the right, the outer annular table 11 moves left and right between the inner annular table 9 and the right end of the upper sealing joint 2.
The oil is injected into the oil injection port 4, the central shaft 12 can move rightwards to contract and reset through oil pressure, oil is discharged from the oil discharge port 13, the central shaft 12 moves leftwards to extend due to the fact that the oil pressure is smaller than the pressure in the blowout-preventing pipe cavity, the right end face of the upper sealing joint 2 and the outer ring platform 11 of the central shaft 12 are matched to use to play a limiting role in moving leftwards of the central shaft 12, and the inner ring platform 9 of the blowout-preventing pipe 6 and the outer ring platform 11 of the central shaft 12 are matched to use to play a limiting role in moving.
The telescopic blowout preventer can be further optimized or/and improved according to the actual requirement:
as shown in fig. 1, the upper connector 1 is a male connector structure, and the lower connector 8 is a female connector structure. According to the requirements, the male buckle structure can be an external thread structure, the female buckle structure can be an internal thread structure, the design is convenient for fast alignment connection with other equipment, and the male buckle structure and the female buckle structure can be mutually connected in series for use according to the requirements.
As shown in fig. 1, a blowout prevention pipe 6 corresponding to the right of the central shaft 12 is fixedly communicated with a pressure relief opening union 7. The pressure relief port union 7 is a well-known technology and is used for pressure relief before being detached from the connecting equipment so as to ensure the safety of operation of personnel.
As shown in fig. 1, a plurality of first sealing rings 10 are fixedly installed on the outer side of the outer ring table 11 at left and right intervals, and a plurality of second sealing rings 14 are fixedly installed on the inner side of the upper sealing joint 2 at left and right intervals. Further increasing the sealability of the present invention.
As shown in the attached figure 1, the upper sealing joint 2 is fixedly connected with the lubricator 6 through a flange structure. The flange structure is the prior known technology, according to needs, the left end of the blowout prevention pipe 6 is fixed with a blowout prevention pipe outer ring platform, at least two first connecting holes are arranged at intervals on the circumference of the blowout prevention pipe outer ring platform, an upper sealing joint outer ring platform is fixed on the outer side of the upper sealing joint 2, second connecting holes corresponding to the first connecting holes are arranged at intervals on the circumference of the upper sealing joint outer ring platform, the blowout prevention pipe outer ring platform and the upper sealing joint outer ring platform sequentially penetrate through the second connecting holes and the first connecting holes through screws to be fixedly connected with bolts in a threaded connection mode, and the connecting mode is convenient to disassemble and install.
The technical characteristics form an embodiment of the invention, which has strong adaptability and implementation effect, and unnecessary technical characteristics can be increased or decreased according to actual needs to meet the requirements of different situations.
Claims (8)
1. A telescopic blowout preventer is characterized by comprising a blowout preventer, an upper sealing joint, a central shaft and a lower joint, wherein the lower joint is fixedly installed at the right end of the blowout preventer, the upper sealing joint with the inner diameter smaller than the inner diameter of the blowout preventer is fixedly installed at the left end of the blowout preventer, the interior of the blowout preventer is communicated with the interior of the upper sealing joint from left to right, the right end of the central shaft penetrates through the upper sealing joint and is positioned at the inner side of the middle part of the blowout preventer, the central shaft is a hollow shaft, the upper joint positioned at the left side of the upper sealing joint is fixed at the left end of the central shaft, an outer ring platform is fixed at the outer side of the right part of, an annular hydraulic cavity is formed between the right end face of the upper sealing joint, the outer side of the central shaft and the inner side of the lubricator, an oil filling port and an oil draining port communicated with the hydraulic cavity are arranged at the outer side of the lubricator at intervals, and the outer ring platform moves left and right between the inner ring platform and the right end of the upper sealing joint.
2. The telescoping lubricator of claim 1, wherein the upper connector is a male and the lower connector is a female connector.
3. The retractable lubricator according to claim 1 or 2, wherein the lubricator is fixedly connected with a pressure relief union at a position right of the central shaft.
4. The telescoping lubricator according to claim 1 or 2, wherein a plurality of first sealing rings are fixedly mounted on the outer side of the outer annular table at left and right intervals, and a plurality of second sealing rings are fixedly mounted on the inner side of the upper sealing joint at left and right intervals.
5. The telescoping lubricator according to claim 3, wherein a plurality of first sealing rings are fixedly mounted on the outer side of the outer annular table at left and right intervals, and a plurality of second sealing rings are fixedly mounted on the inner side of the upper sealing joint at left and right intervals.
6. The telescoping lubricator of claim 3, wherein the upper sealing fitting is fixedly attached to the lubricator by a flange arrangement.
7. The telescoping lubricator of claim 4, wherein the upper sealing fitting is fixedly attached to the lubricator by a flange arrangement.
8. The telescoping lubricator according to claim 1, 2 or 5, wherein the upper sealing fitting is fixedly attached to the lubricator by a flange arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010938918.6A CN111946292A (en) | 2020-09-09 | 2020-09-09 | Telescopic blowout prevention pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010938918.6A CN111946292A (en) | 2020-09-09 | 2020-09-09 | Telescopic blowout prevention pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111946292A true CN111946292A (en) | 2020-11-17 |
Family
ID=73356833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010938918.6A Pending CN111946292A (en) | 2020-09-09 | 2020-09-09 | Telescopic blowout prevention pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111946292A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2099834U (en) * | 1991-06-07 | 1992-03-25 | 吉林省油田管理局乾安采油厂 | Telescopic piezometric blow-out preventing tube |
| CA2275814A1 (en) * | 1999-06-21 | 2000-12-21 | L. Murray Dallas | Blowout preventer protector and setting tools |
| CN202249912U (en) * | 2011-09-22 | 2012-05-30 | 张兰 | Blowout-preventing box device of oil well |
| CN202349599U (en) * | 2011-11-30 | 2012-07-25 | 李宜明 | Pipeline adjusting device and skid-mounted producing test device |
| CN202810749U (en) * | 2012-06-01 | 2013-03-20 | 中国石油天然气集团公司 | Assembling type blowout-preventing pipe |
| CN206801517U (en) * | 2017-05-19 | 2017-12-26 | 宝鸡石油机械有限责任公司 | The lubricator of axial stretching radial misalignments compensation |
| CN108019178A (en) * | 2017-11-23 | 2018-05-11 | 中国石油集团渤海钻探工程有限公司 | A kind of construction method that non-stop plugging in pipe is carried out to flow string |
| CN207470146U (en) * | 2017-11-07 | 2018-06-08 | 中国石油天然气股份有限公司 | Extension type three-level seals blowout hookup |
| CN211370342U (en) * | 2019-12-18 | 2020-08-28 | 山东宝润金属材料有限公司 | Mechanical telescopic blowout prevention pipe |
-
2020
- 2020-09-09 CN CN202010938918.6A patent/CN111946292A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2099834U (en) * | 1991-06-07 | 1992-03-25 | 吉林省油田管理局乾安采油厂 | Telescopic piezometric blow-out preventing tube |
| CA2275814A1 (en) * | 1999-06-21 | 2000-12-21 | L. Murray Dallas | Blowout preventer protector and setting tools |
| CN202249912U (en) * | 2011-09-22 | 2012-05-30 | 张兰 | Blowout-preventing box device of oil well |
| CN202349599U (en) * | 2011-11-30 | 2012-07-25 | 李宜明 | Pipeline adjusting device and skid-mounted producing test device |
| CN202810749U (en) * | 2012-06-01 | 2013-03-20 | 中国石油天然气集团公司 | Assembling type blowout-preventing pipe |
| CN206801517U (en) * | 2017-05-19 | 2017-12-26 | 宝鸡石油机械有限责任公司 | The lubricator of axial stretching radial misalignments compensation |
| CN207470146U (en) * | 2017-11-07 | 2018-06-08 | 中国石油天然气股份有限公司 | Extension type three-level seals blowout hookup |
| CN108019178A (en) * | 2017-11-23 | 2018-05-11 | 中国石油集团渤海钻探工程有限公司 | A kind of construction method that non-stop plugging in pipe is carried out to flow string |
| CN211370342U (en) * | 2019-12-18 | 2020-08-28 | 山东宝润金属材料有限公司 | Mechanical telescopic blowout prevention pipe |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201117 |