CN203383769U - Casing anti-creeping device for casing heads - Google Patents
Casing anti-creeping device for casing heads Download PDFInfo
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- CN203383769U CN203383769U CN201320324620.1U CN201320324620U CN203383769U CN 203383769 U CN203383769 U CN 203383769U CN 201320324620 U CN201320324620 U CN 201320324620U CN 203383769 U CN203383769 U CN 203383769U
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- casing head
- casing
- hanger
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Abstract
The utility model relates to the technical field of casing head devices, in particular to a casing anti-creeping device for casing heads. The casing anti-creeping device comprises a casing head shell, a connecting barrel and a mandrel hanger, wherein upper threads which can be connected with a bottom flange of well control equipment are arranged on the outer side of the upper portion of the casing head shell; lower threads which can be connected with a surface casing are arranged on the lower portion of the casing head shell; an inner ring table is arranged on the inner wall of the lower portion of the casing head shell; an outer ring table is arranged on the outer side of the upper portion of the mandrel hanger; threads which can be connected with an oil layer casing are arranged on the lower portion of the mandrel hanger; and the mandrel hanger is sleeved in the casing head shell and is seated on the inner ring table of the casing head shell through the outer ring table of the mandrel hanger. The casing anti-creeping device is reasonable and compact in structure and convenient to use; the mandrel hanger is locked through a connecting barrel; a pressure gauge and a pressure release valve are arranged on a connecting port, so that pressure and pressure release can be observed; potential safety hazards caused by upwards creeping of casings due to heating can be effectively stopped; and the casing anti-creeping device has the advantages of safety, reliability, simplicity and convenience.
Description
Technical field
the utility model relates to casing head device technique field, is a kind of casing head sleeve pipe leap-preventing device.
Background technology
part thin oil well completion well head adopts the 21MPa casing head at present, in running into similar heat and the construction of oil production technology such as washing, under the operating mode that in pit shaft, temperature raises, owing to there is no the anti-channeling structure, make casing head when temperature in wellbore raises, gas expansion can cause mandrel hanger can be with sleeve pipe elongation and on move, cause gases at high pressure to reveal suddenly, well head is damaged, gives in operation process and bring danger.
Summary of the invention
the utility model provides a kind of casing head sleeve pipe leap-preventing device, has overcome the deficiency of above-mentioned prior art, and when it can effectively solve temperature in wellbore that existing casing head exists and raises, mandrel hanger moves, exists the problem of potential safety hazard on can be with the sleeve pipe elongation.
the technical solution of the utility model realizes by following measures: a kind of casing head sleeve pipe leap-preventing device, comprise the casing head housing, connecting cylinder and mandrel hanger, the upper outside of casing head housing has screw thread on the housing that can connect flange at the bottom of well-control equipment, screw thread under the housing that can connect surface pipe is arranged at the bottom of casing head housing, ring platform in housing is arranged on the lower inner wall of casing head housing, the upper outside of mandrel hanger has the outer shroud of suspension platform, the hanger screw thread that can connect production string is arranged at the bottom of mandrel hanger, mandrel hanger is sleeved on the casing head enclosure interior, mandrel hanger is sitting in housing and encircles on platform by suspension outer shroud platform, the connecting cylinder internal thread matched with screw thread on housing is arranged on the inwall of connecting cylinder, connecting cylinder is fixedly mounted on the casing head housing by screw thread on connecting cylinder internal thread and housing, on the upper inside wall of connecting cylinder, one has internal diameter to be less than the annular gland that hangs outer shroud platform external diameter, connecting cylinder is pressed on the upper surface of mandrel hanger by annular gland.
below the further optimization and/or improvements to above-mentioned utility model technical scheme:
in above-mentioned housing, can there be the up big and down small setting conical surface upper end of ring platform, and the suspension conical surface matched with the setting conical surface is arranged at the bottom that hangs the outer shroud platform, hangs the outer shroud platform and is sitting on the setting conical surface and keeps sealing by hanging the conical surface.
the external diameter of above-mentioned suspension outer shroud platform can match with the casing head housing internal diameter of ring platform top in housing.
on the lateral surface of above-mentioned suspension outer shroud platform, the hanger seal groove that is no less than can be arranged, the hanger sealing ring is installed in the hanger seal groove.
on the mandrel hanger upper surface of above-mentioned corresponding annular gland inner side, the installing hole of withholding that is no less than can be arranged.
on above-mentioned corresponding housing, the upper outside of the casing head housing of screw thread top position can have the housing seal groove that is no less than, and the housing seal circle is installed in the housing seal groove.
above-mentioned casing head hull outside can be provided with the connectivity port that is no less than, in the casing head housing of position, corresponding connectivity port, radial direction through hole is arranged, one end of radial direction through hole is connected with connectivity port, the casing head housing intracavity inter-connection of ring platform top in the other end of radial direction through hole and housing.
the outside of above-mentioned connecting cylinder can be provided with the hole clipping that is no less than.
the utility model reasonable and compact in structure, easy to use, it locks mandrel hanger by connecting cylinder, come observed pressure and pressure release by pressure meter and the relief valve of installing on connectivity port, can effectively stop to alter the potential safety hazard of bringing because of sleeve pipe on being heated, there are safe, reliable, easy characteristics.
The accompanying drawing explanation
accompanying drawing 1 is looked the sectional structure schematic diagram for the master of the utility model most preferred embodiment.
coding in accompanying drawing is respectively: 1 is the casing head housing, and 2 is connecting cylinder, and 3 is mandrel hanger, 4 is screw thread on housing, and 5 is screw thread under housing, and 6 is ring platform in housing, 7 for hanging the outer shroud platform, and 8 is the hanger screw thread, and 9 is the connecting cylinder internal thread, 10 is annular gland, and 11 is the setting conical surface, and 12 is the hanger seal groove, 13 for withholding installing hole, and 14 is the housing seal groove, and 15 is connectivity port, 16 is radial direction through hole, and 17 is hole clipping.
The specific embodiment
the utility model is not subject to the restriction of following embodiment, can determine concrete embodiment according to the technical solution of the utility model and actual conditions.
in the utility model, for convenience of description, the description of the relative position relation of each parts is all to be described according to the Butut mode of Figure of description 1, as: the position relationship of forward and backward, upper and lower, left and right etc. is to determine according to the Butut direction of Figure of description.
below in conjunction with embodiment and accompanying drawing, the utility model is further described:
as shown in Figure 1, this casing head sleeve pipe leap-preventing device comprises casing head housing 1, connecting cylinder 2 and mandrel hanger 3, the upper outside of casing head housing 1 has screw thread 4 on the housing that can connect flange at the bottom of well-control equipment, screw thread 5 under the housing that can connect surface pipe is arranged at the bottom of casing head housing 1, ring platform 6 in housing is arranged on the lower inner wall of casing head housing 1, the upper outside of mandrel hanger 3 has the outer shroud of suspension platform 7, the hanger screw thread 8 that can connect production string is arranged at the bottom of mandrel hanger 3, mandrel hanger 3 is sleeved on casing head housing 1 inside, mandrel hanger 3 is sitting in housing and encircles on platform 6 by suspension outer shroud platform 7, the connecting cylinder internal thread 9 matched with screw thread on housing 4 is arranged on the inwall of connecting cylinder 2, connecting cylinder 2 is fixedly mounted on casing head housing 1 by screw thread 4 on connecting cylinder internal thread 9 and housing, on the upper inside wall of connecting cylinder 2, one has internal diameter to be less than the annular gland 10 that hangs outer shroud platform 7 external diameters, connecting cylinder 2 is pressed on the upper surface of mandrel hanger 3 by annular gland 10.In the construction that temperature raises in pit shaft, casing annulus gas expansion and the elongation of oil jacket heat, cause on sleeve pipe and mandrel hanger 3 and move, cause gases at high pressure to leak suddenly, bring potential safety hazard to the operating personnel, by connecting cylinder 2 locking mandrel hangers 3, can effectively stop to alter the potential safety hazard of bringing because of sleeve pipe on being heated.
can according to actual needs, above-mentioned casing head sleeve pipe leap-preventing device be made further optimization and/or improvements:
as shown in Figure 1, in housing, there is the up big and down small setting conical surface 11 upper end of ring platform 6, and the suspension conical surface matched with the setting conical surface 11 is arranged at the bottom that hangs outer shroud platform 7, hangs outer shroud platform 7 and is sitting on the setting conical surface 11 and keeps sealing by hanging the conical surface.
as shown in Figure 1, hanging the external diameter of outer shroud platform 7 matches with casing head housing 1 internal diameter of ring platform 6 tops in housing.
as shown in Figure 1, on the lateral surface of suspension outer shroud platform 7, the hanger seal groove 12 that is no less than is arranged, the hanger sealing ring is installed in hanger seal groove 12.The hanger sealing ring can make to hang between outer shroud platform 7 outsides and casing head housing 1 inwall and keep sealing.
as shown in Figure 1, on mandrel hanger 3 upper surfaces of corresponding annular gland 10 inner sides, have be no less than one withhold installing hole 13.
as shown in Figure 1, on corresponding housing, the upper outside of the casing head housing 1 of screw thread 4 top positions has the housing seal groove 14 that is no less than, and the housing seal circle is installed in housing seal groove 14.The housing seal circle can make between casing head housing 1 and connecting cylinder 2 to keep sealing.
as shown in Figure 1, casing head housing 1 outer setting has the connectivity port 15 that is no less than, in the casing head housing 1 of 15 positions, corresponding connectivity port, radial direction through hole 16 is arranged, one end of radial direction through hole 16 is connected with connectivity port 15, casing head housing 1 intracavity inter-connection of ring platform 6 tops in the other end of radial direction through hole 16 and housing.Can setting pressure table or relief valve by connectivity port 15, so that the pressure in observation casing head housing 1 inner chamber, and pressure release used, safer.Before carrying out construction operation, first observe pressure meter, when the pressure in annular space surpasses the safety value scope, by being constructed again after the timely pressure release of relief valve.
as shown in Figure 1, the arranged outside of connecting cylinder 2 has the hole clipping 17 that is no less than.By at the interior insertion crowbar of hole clipping 17 or drill rod, can be convenient to screw connecting cylinder 2 by hammering crowbar or drill rod, use convenient.
above technical characterictic has formed most preferred embodiment of the present utility model, and it has stronger compliance and best implementation result, can increase and decrease according to actual needs non-essential technical characterictic, meets the demand of different situations.
Claims (8)
1. a casing head sleeve pipe leap-preventing device, it is characterized in that comprising the casing head housing, connecting cylinder and mandrel hanger, the upper outside of casing head housing has screw thread on the housing that can connect flange at the bottom of well-control equipment, screw thread under the housing that can connect surface pipe is arranged at the bottom of casing head housing, ring platform in housing is arranged on the lower inner wall of casing head housing, the upper outside of mandrel hanger has the outer shroud of suspension platform, the hanger screw thread that can connect production string is arranged at the bottom of mandrel hanger, mandrel hanger is sleeved on the casing head enclosure interior, mandrel hanger is sitting in housing and encircles on platform by suspension outer shroud platform, the connecting cylinder internal thread matched with screw thread on housing is arranged on the inwall of connecting cylinder, connecting cylinder is fixedly mounted on the casing head housing by screw thread on connecting cylinder internal thread and housing, on the upper inside wall of connecting cylinder, one has internal diameter to be less than the annular gland that hangs outer shroud platform external diameter, connecting cylinder is pressed on the upper surface of mandrel hanger by annular gland.
2. casing head sleeve pipe leap-preventing device according to claim 1, there is the up big and down small setting conical surface upper end that it is characterized in that ring platform in housing, the suspension conical surface matched with the setting conical surface is arranged at the bottom that hangs the outer shroud platform, hangs the outer shroud platform and is sitting on the setting conical surface and keeps sealing by hanging the conical surface.
3. casing head sleeve pipe leap-preventing device according to claim 1 and 2, is characterized in that hanging the external diameter of outer shroud platform and match with the casing head housing internal diameter of ring platform top in housing.
4. casing head sleeve pipe leap-preventing device according to claim 3, is characterized in that hanging on the lateral surface of outer shroud platform the hanger seal groove that is no less than arranged, and the hanger sealing ring is installed in the hanger seal groove.
5. according to claim 1 or 2 or 3 or 4 described casing head sleeve pipe leap-preventing devices, it is characterized in that, on the mandrel hanger upper surface of corresponding annular gland inner side, the installing hole of withholding that is no less than is arranged.
6. according to claim 1 or 2 or 3 or 4 or 5 described casing head sleeve pipe leap-preventing devices, the upper outside that it is characterized in that the casing head housing of screw thread top position on corresponding housing has the housing seal groove that is no less than, and the housing seal circle is installed in the housing seal groove.
7. according to claim 1 or 2 or 3 or 4 or 5 or 6 described casing head sleeve pipe leap-preventing devices, it is characterized in that the casing head hull outside is provided with the connectivity port that is no less than, in the casing head housing of position, corresponding connectivity port, radial direction through hole is arranged, one end of radial direction through hole is connected with connectivity port, the casing head housing intracavity inter-connection of ring platform top in the other end of radial direction through hole and housing.
8. according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 described casing head sleeve pipe leap-preventing devices, it is characterized in that the arranged outside of connecting cylinder has the hole clipping that is no less than.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320324620.1U CN203383769U (en) | 2013-06-06 | 2013-06-06 | Casing anti-creeping device for casing heads |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320324620.1U CN203383769U (en) | 2013-06-06 | 2013-06-06 | Casing anti-creeping device for casing heads |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203383769U true CN203383769U (en) | 2014-01-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320324620.1U Expired - Fee Related CN203383769U (en) | 2013-06-06 | 2013-06-06 | Casing anti-creeping device for casing heads |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203383769U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989315A (en) * | 2015-05-26 | 2015-10-21 | 美钻能源科技(上海)有限公司 | Center hole sealing and locking apparatus for tubing hanger of underwater horizontal Christmas tree |
| CN105587272A (en) * | 2016-01-28 | 2016-05-18 | 太仓市高泰机械有限公司 | Casing head easy to disassemble and assemble |
| CN106884625A (en) * | 2015-12-15 | 2017-06-23 | 中国石油天然气股份有限公司 | Method for treating oil-water well oil layer casing pipe channeling |
| CN111305763A (en) * | 2020-03-17 | 2020-06-19 | 河北宏龙环保科技有限公司 | Oil layer casing pipe upward-channeling prevention device |
| CN111648756A (en) * | 2020-06-30 | 2020-09-11 | 中国石油天然气集团有限公司 | Connecting device for oil extraction for fracturing in casing |
| CN115095293A (en) * | 2022-07-27 | 2022-09-23 | 中国地质科学院勘探技术研究所 | Prevent that sleeve pipe from scurrying on hanging sealing device |
-
2013
- 2013-06-06 CN CN201320324620.1U patent/CN203383769U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989315A (en) * | 2015-05-26 | 2015-10-21 | 美钻能源科技(上海)有限公司 | Center hole sealing and locking apparatus for tubing hanger of underwater horizontal Christmas tree |
| CN106884625A (en) * | 2015-12-15 | 2017-06-23 | 中国石油天然气股份有限公司 | Method for treating oil-water well oil layer casing pipe channeling |
| CN106884625B (en) * | 2015-12-15 | 2019-04-09 | 中国石油天然气股份有限公司 | Method for treating oil-water well oil layer casing pipe channeling |
| CN105587272A (en) * | 2016-01-28 | 2016-05-18 | 太仓市高泰机械有限公司 | Casing head easy to disassemble and assemble |
| CN111305763A (en) * | 2020-03-17 | 2020-06-19 | 河北宏龙环保科技有限公司 | Oil layer casing pipe upward-channeling prevention device |
| CN111648756A (en) * | 2020-06-30 | 2020-09-11 | 中国石油天然气集团有限公司 | Connecting device for oil extraction for fracturing in casing |
| CN115095293A (en) * | 2022-07-27 | 2022-09-23 | 中国地质科学院勘探技术研究所 | Prevent that sleeve pipe from scurrying on hanging sealing device |
| CN115095293B (en) * | 2022-07-27 | 2023-10-13 | 中国地质科学院勘探技术研究所 | Prevent sleeve pipe and scurry suspension seal device |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140108 Termination date: 20210606 |