CN102213081A - Spindle type metal sealing and metal framework type rubber sealing sleeve hanger - Google Patents
Spindle type metal sealing and metal framework type rubber sealing sleeve hanger Download PDFInfo
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- CN102213081A CN102213081A CN2011101434095A CN201110143409A CN102213081A CN 102213081 A CN102213081 A CN 102213081A CN 2011101434095 A CN2011101434095 A CN 2011101434095A CN 201110143409 A CN201110143409 A CN 201110143409A CN 102213081 A CN102213081 A CN 102213081A
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Abstract
The invention discloses a spindle type metal sealing and metal framework type rubber sealing sleeve hanger, which comprises a primary seal and a secondary seal, wherein the primary seal and the secondary seal are arranged on the external circumference of a hanger body. The primary seal is structurally characterized in that: a primary seal pressing plate, a metal frame type double-V-shaped sealing ring, a spacer ring, an X-shaped metal sealing piece and a primary seal supporting ring are sequentially arranged on a table surface which faces a small-end port of the hanger body; a nut is arranged at the external end of the primary seal supporting ring; spacer ring O-shaped sealing rings are arranged on internal and external surfaces of the spacer ring respectively; and a radial through hole is formed in the middle of the spacer ring. The secondary seal is structurally characterized in that: a screw thread pressing plate, a screw pressing plate, a double-V-shaped sealing ring and a secondary seal supporting ring are sequentially arranged on the table surface which faces a large-end port of the hanger body; the double-V-shaped sealing ring is positioned between the hanger body and an integrated sleeve head body; and a screw is inserted into spindle holes of the screw pressing plate, the double-V-shaped sealing ring and the secondary seal supporting ring. The spindle type metal sealing and metal framework type rubber sealing sleeve hanger is good in sealing effect and long in service life.
Description
Technical field
The invention belongs to the petroleum drilling and mining technical field, relate to the metallic seal of a kind of mandrel formula and add metallic framework formula rubber seal casing hanger.
Background technology
The wellhead assembly that one cover is complete mainly is made up of casing head, tubing head and oil recovery (gas) tree three parts.During drilling well preventer is installed in and constitutes wellhead for drilling on the casing head; During completion, (gas) tree of recovering the oil is installed in the tubing head top, promptly constitutes (gas) wellhead assembly that recovers the oil.Wherein, the main effect of tubing head is to hang oil pipe, the annular space between sealing oil pipe and the sleeve pipe; The main effect of production tree is switch, control and guiding gas stream and hangs oil pipe; The effect of casing head is to connect surface pipe, hangs the multilayer sleeve in the well, the annular space between sleeve pipe and the sleeve pipe.Whole device need satisfy formation testing completion jobs that requires special skills such as drilling well, well cementation and testing pressure down hole, well-flushing, fracture acidizing.
The mandrel formula hanger of existing anti-sulphur wellhead assembly, casing head mandrel formula rubber seal hanger or metallic seal hanger, sealing effectiveness is poor, and component wear is fast, and application life is short.
Summary of the invention
The objective of the invention is, provide the metallic seal of a kind of mandrel formula to add metallic framework formula rubber seal casing hanger, solved the problem that prior art equipment sealing effectiveness is poor, application life is short.
The technical solution adopted in the present invention is, the metallic seal of a kind of mandrel formula adds metallic framework formula rubber seal casing hanger, and the excircle that is included in the hanger body is provided with primary seal and secondary sealing,
The structure of described primary seal is, be included in hanger body middle part and be provided with table top towards microcephaly's port, on this table top circumference from hanger body stub end to little head end, be disposed with primary seal pressing plate, spacer ring, primary seal Supporting ring, the outer end of primary seal Supporting ring is equipped with and cap; Be provided with one group of double V-shaped joint ring of band metallic framework formula between primary seal pressing plate and the spacer ring, be provided with one group of X type metal seal between spacer ring and the primary seal Supporting ring, be provided with spacer ring O RunddichtringO at the surfaces externally and internally of spacer ring; The middle part of spacer ring has through hole radially, and is corresponding with the pressure testing greasing hole site on the casing head body;
The structure of described secondary sealing is, be provided with another table top at hanger body stub end towards the major part port, this upper end circumference table top, according to from hanger body stub end to little head end, be disposed with the screw thread pressing plate, the screw pressing plate, double V-shaped joint ring and secondary sealing Supporting ring, double V-shaped joint ring is between hanger body and casing head body, the screw thread pressing plate is pressed in above the screw pressing plate, the screw pressing plate is pressed on the upper end V-type face of double V-shaped joint ring, the lower end V-type face of double V-shaped joint ring is pressed on the secondary sealing of the sharp mouth type Supporting ring, along the screw pressing plate, the concentric axis hole of double V-shaped joint ring and secondary sealing Supporting ring is installed with a screw.
The invention has the beneficial effects as follows that primary seal excites the hanger primary seal by casing wt, form metallic seal setting on the tapering face of casing head body correspondence; Secondary sealing by sleeve pipe gravity with tighten pressing plate and excite rubber seal jointly, guarantee that sealing effectiveness is better, application life significant prolongation.
Description of drawings
Fig. 1 is the structural representation of apparatus of the present invention;
Fig. 2 is the installment state schematic diagram of apparatus of the present invention;
Fig. 3 is the wellhead assembly primary seal partial enlarged drawing at B place among Fig. 2;
Fig. 4 is the secondary sealing of the wellhead assembly partial enlarged drawing at A place among Fig. 2.
Among the figure, 1. hanger body, 2. and cap, 3. primary seal Supporting ring, 4.X type metal seal, 5. spacer ring, 6. spacer ring O RunddichtringO 7. is with the double V-shaped joint ring of metallic framework formula, 8. primary seal pressing plate, 9. body O RunddichtringO, 10. double V-shaped joint ring, 11. screw pressing plates, 12. screw, 13. screw thread pressing plates, 14. secondary sealing Supporting rings, 15. the casing head body, 16. sleeve pipes, 17..
The specific embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
With reference to Fig. 1, Fig. 2, the structure of apparatus of the present invention is, the excircle that is included in hanger body 1 is provided with primary seal (B place) and secondary sealing (A place), and primary seal adopts metallic seal to add skeleton rubber and assists combined structure; Double V-shaped ring structure is adopted in secondary sealing; Excircle between hanger body 1 primary seal and the secondary sealing is provided with body O RunddichtringO 9.Realize multiple-sealed combination by primary seal, body O RunddichtringO 9 and secondary sealing between hanger body 1 and the casing head body 15, hanger body 1 lower end adopts male thread directly to be connected with the interface box thread of sleeve pipe 16.
With reference to Fig. 1, Fig. 3, the structure of primary seal is, being included in hanger body 1 middle part is provided with towards the table top of microcephaly's port (installation site is towards downwards), on this table top circumference from hanger body 1 stub end to little head end, be disposed with primary seal pressing plate 8, spacer ring 5, primary seal Supporting ring 3, the outer end of primary seal Supporting ring 3 is equipped with and cap 2, and cap 2 is used for fixing main sealing assembly; Be provided with one group of double V-shaped joint ring 7 of band metallic framework formula between primary seal pressing plate 8 and the spacer ring 5, be provided with one group of X type metal seal 4 between spacer ring 5 and the primary seal Supporting ring 3, be provided with a plurality of spacer ring O RunddichtringOs 6 at the surfaces externally and internally of spacer ring 5.The middle part of spacer ring 5 has through hole radially, and is corresponding with the pressure testing greasing hole site on the casing head body 15.
With reference to Fig. 1, Fig. 4, the structure of secondary sealing is, be provided with towards another table top of major part port (installation site towards upwards) at hanger body 1 stub end, this upper end circumference table top, according to from hanger body 1 stub end to little head end, be disposed with screw thread pressing plate 13, screw pressing plate 11, double V-shaped joint ring 10 and secondary sealing Supporting ring 14, double V-shaped joint ring 10 is between hanger body 1 and all-in-one-piece casing head body 15, screw thread pressing plate 13 is pressed in above the screw pressing plate 11, screw pressing plate 11 is pressed on the upper end V-type face of double V-shaped joint ring 10, the lower end V-type face of double V-shaped joint ring 10 is pressed on the secondary sealing of the sharp mouth type Supporting ring 14, along screw pressing plate 11, the concentric axis hole of double V-shaped joint ring 10 and secondary sealing Supporting ring 14 is installed with a screw 12.
Primary seal is integrated metallic seal, pressure testing greasing integral type spacer ring, the rubber seal of metallic framework formula are in one.When sitting the extension hanger, be connected with sleeve pipe 16 by hanger body 1 lower end, because sleeve pipe gravity pulling hanger body moves down, table top presses down primary seal pressing plate 8, then the double V-shaped rubber seal ring 7 of metallic framework formula will be extruded and realize sealing with casing head inwall and hanger body, after double V-shaped rubber seal ring 7 distortion fully of metallic framework formula, primary seal pressing plate 8 reaches spacer ring 5 after will giving metallic framework strength transmission, pass to again on the X type metallic packing ring 4, pass to Supporting ring 3, because the step of Supporting ring 3 and casing head body 15 is caught, react on X type metallic packing ring 4 and form sealing.The control of the sealing area of X type metallic packing ring 4 sets and sets conical surface contact on the conical surface and the corresponding casing head body, forces flow of metal to seal, and external force is fully from the weight of sleeve pipe, and is very convenient, reliably plays the primary seal effect.The metallic seal design principle be plasticity preferably the soft metal under the situation that is subjected to big pressure, can produce plastic strain, at sealing station this type of soft metal is installed, apply then with weight, this weight is from the well cementation gravity of sleeve pipe, distortion back, soft metal produces interference fit at the sealing station place, thereby plays the primary seal effect, and sealing effectiveness is quite reliable.Have core hole 17 on the primary seal pressing plate 8, core hole 17 is when pressure seals in, and pressure passes to the double V-shaped rubber seal ring 7 of metallic framework formula by core hole 17, further the skeleton double V-shaped rubber seal ring 7 of extrusion metal.
The spacer ring 5 of pressure testing greasing integral type, surfaces externally and internally respectively are provided with two O RunddichtringOs 6, are used for auxiliary pressure testing and use, and the ring recess at O RunddichtringO 6 places adopts the dovetail groove form, can prevent that hanger from extruding O RunddichtringO 6 when people's process down.Spacer ring 5 can play multiple action, comprises that auxiliary seal and metallic seal transmit power, checks sealing performance during pressure testing, can also greasing increase sealing effectiveness, does not all adopt in the former various hangers of this structure.
Double V-shaped joint ring 10 adopts saturated hydrogenated nitrile-butadiene rubber material, utilize screw 12 extrusion screw pressing plates 11 to make 10 distortion of V-seal ring, the about 3.5-4mm of distortion size, manually tighten screw thread pressing plate 13 then, secondary sealing with hanger body 1 toward transfer to casing head body 15 set the tapering face time, because the space between casing head body 15 and the hanger body 1 diminishes with setting tapering, double V-shaped joint ring 10 is squeezed and realizes sealing, hanger is tightened screw thread pressing plate 13 after sitting and being suspended to the position, extrusion screw pressing plate 11 passes to double V-shaped joint ring 10, the secondary sealing of point mouth type Supporting ring 14 reacts on double V-shaped joint ring 10, excites double V-shaped joint ring 10 sealings.
Device of the present invention adopts different materials and control technology, just can satisfy the instructions for use under the varying environment.Standard rank: PSL1-PSL4, material grade: AA-HH, performance class: PR1-PR2, pressure rank: between the 14-105MPa.
Claims (4)
1. mandrel formula metallic seal adds metallic framework formula rubber seal casing hanger, it is characterized in that: the excircle that is included in hanger body (1) is provided with primary seal and secondary sealing,
The structure of described primary seal is, be included in hanger body (1) middle part and be provided with table top towards microcephaly's port, on this table top circumference from hanger body (1) stub end to little head end, be disposed with primary seal pressing plate (8), spacer ring (5), primary seal Supporting ring (3), the outer end of primary seal Supporting ring (3) is equipped with and cap (2); Be provided with one group of double V-shaped joint ring of band metallic framework formula (7) between primary seal pressing plate (8) and the spacer ring (5), be provided with one group of X type metal seal (4) between spacer ring (5) and the primary seal Supporting ring (3), be provided with spacer ring O RunddichtringO (6) at the surfaces externally and internally of spacer ring (5); The middle part of spacer ring (5) has through hole radially, and is corresponding with the pressure testing greasing hole site on the casing head body (15);
The structure of described secondary sealing is, be provided with another table top at hanger body (1) stub end towards the major part port, this upper end circumference table top, according to from hanger body (1) stub end to little head end, be disposed with screw thread pressing plate (13), screw pressing plate (11), double V-shaped joint ring (10) and secondary sealing Supporting ring (14), double V-shaped joint ring (10) is positioned between hanger body (1) and the casing head body (15), screw thread pressing plate (13) is pressed in above the screw pressing plate (11), screw pressing plate (11) is pressed on the upper end V-type face of double V-shaped joint ring (10), the lower end V-type face of double V-shaped joint ring (10) is pressed on the sharp mouth type secondary sealing Supporting ring (14), along screw pressing plate (11), the concentric axis hole of double V-shaped joint ring (10) and secondary sealing Supporting ring (14) is installed with a screw (12).
2. mandrel formula according to claim 1 metallic seal adds metallic framework formula rubber seal casing hanger, it is characterized in that: hanger body (1) circumference between primary seal and the secondary sealing is provided with body O RunddichtringO (9).
3. mandrel formula according to claim 1 metallic seal adds metallic framework formula rubber seal casing hanger, it is characterized in that: described double V-shaped rubber seal ring (7), double V-shaped joint ring (10), tapering face projection (15) are all selected the V-type conical surface for use, and X type metallic packing ring (4) is selected for use and set the conical surface.
4. mandrel formula according to claim 1 metallic seal adds metallic framework formula rubber seal casing hanger, it is characterized in that: have core hole (17) on the described primary seal pressing plate (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110143409.5A CN102213081B (en) | 2011-05-31 | 2011-05-31 | Spindle type metal sealing and metal framework type rubber sealing sleeve hanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110143409.5A CN102213081B (en) | 2011-05-31 | 2011-05-31 | Spindle type metal sealing and metal framework type rubber sealing sleeve hanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102213081A true CN102213081A (en) | 2011-10-12 |
| CN102213081B CN102213081B (en) | 2014-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110143409.5A Active CN102213081B (en) | 2011-05-31 | 2011-05-31 | Spindle type metal sealing and metal framework type rubber sealing sleeve hanger |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014323A (en) * | 2016-07-21 | 2016-10-12 | 宝鸡石油机械有限责任公司广汉钻采设备厂 | Hanger with metal auxiliary seal and tubing equipment with hanger |
| CN106545311A (en) * | 2017-01-12 | 2017-03-29 | 太仓优尼泰克精密机械有限公司 | A kind of black box |
| CN106761507A (en) * | 2016-12-15 | 2017-05-31 | 中石化重庆涪陵页岩气勘探开发有限公司 | A kind of shale gas well boll-weevil hanger and the shale gas gas production system containing the hanger |
| CN106761528A (en) * | 2016-12-19 | 2017-05-31 | 宝鸡石油机械有限责任公司广汉钻采设备厂 | One kind can compensate for X-type metal sealing cushion ring casing head |
| CN107387015A (en) * | 2017-08-24 | 2017-11-24 | 中国石油集团渤海石油装备制造有限公司 | A kind of sealed casing head of HTHP MULTIPLE COMPOSITE |
| CN109162661A (en) * | 2018-10-29 | 2019-01-08 | 四川宝石机械钻采设备有限责任公司 | A kind of multi-functional mandrel type hanger |
| CN109736741A (en) * | 2019-03-26 | 2019-05-10 | 德州联合石油科技股份有限公司 | A kind of suspending weight excitation mandrel hanger casing head |
| CN111997559A (en) * | 2020-09-10 | 2020-11-27 | 江苏金石机械集团有限公司 | Separable hanger sealing sleeve device |
| CN114320211A (en) * | 2020-10-09 | 2022-04-12 | 中国海洋石油集团有限公司 | Thermal recovery positioning insertion sealing device |
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| GB2318599A (en) * | 1995-10-06 | 1998-04-29 | Fmc Corp | Dual metal seal for wellhead housing |
| CN201041007Y (en) * | 2006-04-21 | 2008-03-26 | 刘庆梅 | Integrated type outer circulation casing head hanger of casing head |
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| CN101769146A (en) * | 2009-12-30 | 2010-07-07 | 中国石油天然气集团公司 | Metal-to-metal sealing tieback connector |
| CN201554402U (en) * | 2009-11-16 | 2010-08-18 | 江苏金石油气井口科技有限公司 | Mandrel type hanger |
| CN201568000U (en) * | 2009-12-16 | 2010-09-01 | 中国石油天然气集团公司 | Integral-type platform oil producing wellhead device |
| CN201620769U (en) * | 2010-03-23 | 2010-11-03 | 武汉金地探矿机械有限公司 | Water connector for deep drilling |
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| GB2108598A (en) * | 1981-11-02 | 1983-05-18 | Acf Ind Inc | Packing assembly |
| US4719971A (en) * | 1986-08-18 | 1988-01-19 | Vetco Gray Inc. | Metal-to-metal/elastomeric pack-off assembly for subsea wellhead systems |
| CN2084978U (en) * | 1991-01-04 | 1991-09-18 | 程桂华 | Superhigh pressure drivepipe head |
| GB2318599A (en) * | 1995-10-06 | 1998-04-29 | Fmc Corp | Dual metal seal for wellhead housing |
| CN201041007Y (en) * | 2006-04-21 | 2008-03-26 | 刘庆梅 | Integrated type outer circulation casing head hanger of casing head |
| CN101625026A (en) * | 2008-07-08 | 2010-01-13 | 环球油田机械公司 | Resilient high pressure metal-to-metal seal and method |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014323B (en) * | 2016-07-21 | 2018-11-30 | 宝鸡石油机械有限责任公司广汉钻采设备厂 | Lower oil tube equipment equipped with hanger |
| CN106014323A (en) * | 2016-07-21 | 2016-10-12 | 宝鸡石油机械有限责任公司广汉钻采设备厂 | Hanger with metal auxiliary seal and tubing equipment with hanger |
| CN106761507A (en) * | 2016-12-15 | 2017-05-31 | 中石化重庆涪陵页岩气勘探开发有限公司 | A kind of shale gas well boll-weevil hanger and the shale gas gas production system containing the hanger |
| CN106761528B (en) * | 2016-12-19 | 2019-06-21 | 宝鸡石油机械有限责任公司广汉钻采设备厂 | One kind can compensate for X-type metal sealing cushion ring casing head |
| CN106761528A (en) * | 2016-12-19 | 2017-05-31 | 宝鸡石油机械有限责任公司广汉钻采设备厂 | One kind can compensate for X-type metal sealing cushion ring casing head |
| CN106545311A (en) * | 2017-01-12 | 2017-03-29 | 太仓优尼泰克精密机械有限公司 | A kind of black box |
| CN107387015A (en) * | 2017-08-24 | 2017-11-24 | 中国石油集团渤海石油装备制造有限公司 | A kind of sealed casing head of HTHP MULTIPLE COMPOSITE |
| CN109162661A (en) * | 2018-10-29 | 2019-01-08 | 四川宝石机械钻采设备有限责任公司 | A kind of multi-functional mandrel type hanger |
| CN109736741A (en) * | 2019-03-26 | 2019-05-10 | 德州联合石油科技股份有限公司 | A kind of suspending weight excitation mandrel hanger casing head |
| CN109736741B (en) * | 2019-03-26 | 2024-01-12 | 德州联合石油科技股份有限公司 | Sleeve head of suspension weight excitation mandrel hanger |
| CN111997559A (en) * | 2020-09-10 | 2020-11-27 | 江苏金石机械集团有限公司 | Separable hanger sealing sleeve device |
| CN114320211A (en) * | 2020-10-09 | 2022-04-12 | 中国海洋石油集团有限公司 | Thermal recovery positioning insertion sealing device |
| CN114320211B (en) * | 2020-10-09 | 2024-03-08 | 中国海洋石油集团有限公司 | Thermal recovery positioning insertion sealing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102213081B (en) | 2014-04-02 |
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Inventor after: Xu Zhixiong Inventor after: Zhang Hao Inventor after: Liu Huiliang Inventor after: Li Feng Inventor after: Qin Shikuan Inventor after: Liu Junfeng Inventor after: Li Zehan Inventor after: Zhang Bin Inventor after: Kang Yanjun Inventor after: Xiao Litong Inventor after: Peng Jianxin Inventor after: Liu Yi Inventor after: Shi Xitian Inventor after: Yang Xiaofeng Inventor after: Li Huaizhong Inventor before: Xu Zhixiong Inventor before: Zhang Hao Inventor before: Liu Huiliang Inventor before: Li Feng Inventor before: Qin Shikuan Inventor before: Zhang Bin Inventor before: Kang Yanjun Inventor before: Xiao Litong Inventor before: Peng Jianxin Inventor before: Liu Yi Inventor before: Shi Xitian Inventor before: Yang Xiaofeng Inventor before: Li Huaizhong |
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Free format text: CORRECT: INVENTOR; FROM: XU ZHIXIONG ZHANG BIN KANG YANJUN XIAO LITONG PENG JIANXIN LIU YI SHI XITIAN YANG XIAOFENG LI HUAIZHONG ZHANG HAO LIU HUILIANG LI FENG QIN SHIKUAN TO: XU ZHIXIONG ZHANG BIN KANG YANJUN XIAO LITONG PENG JIANXIN LIU YI SHI XITIAN YANG XIAOFENG LI HUAIZHONG ZHANG HAO LIU HUILIANG LI FENG QIN SHIKUAN LIU JUNFENG LI ZEHAN |
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