CN202990942U - Double-seal Christmas tree for conveniently mounting coiled tubing - Google Patents
Double-seal Christmas tree for conveniently mounting coiled tubing Download PDFInfo
- Publication number
- CN202990942U CN202990942U CN 201220756712 CN201220756712U CN202990942U CN 202990942 U CN202990942 U CN 202990942U CN 201220756712 CN201220756712 CN 201220756712 CN 201220756712 U CN201220756712 U CN 201220756712U CN 202990942 U CN202990942 U CN 202990942U
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- coiled tubing
- hole
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- convenient
- gasket ring
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Abstract
The utility model discloses a double-seal Christmas tree for conveniently mounting coiled tubing. During first installation and use, an anti-abrasion bush and a plurality of O-shaped sealing rings are arranged in a large cylindrical hole and a tapered hole in the upper end of a reducer tee and in two large-diameter stepped holes in the lower end of a central hole of a crossover flange; when the coiled tubing is mounted subsequently, the coiled tubing, a lower backing ring, a sealing rubber sleeve, an upper backing ring, a conical surface pressing sleeve, a slip hanger and a slip connecting ring are arranged from bottom to top, and a sealing bush and a matched O-shaped sealing ring are arranged in the two large-diameter stepped holes in the lower end of the central hole of the crossover flange; and in addition, one side of the sections of the lower backing ring and the upper backing ring is in a shape of a trapezoidal bulge; the section of the sealing rubber sleeve is H-shaped; the upper part of the conical surface pressing sleeve is processed to be a dish-shaped recess; and the slip hanger consists of 3-4 slips. According to the technical measures, the using functions, sealing performance and economic benefits of the double-seal Christmas tree are comprehensively improved.
Description
Technical field
The utility model relates to the improvement design of production tree on petroleum machinery, gas production wellhead.
Background technology
The natural gas well generally all adopts the flow string of large latus rectum, blowing production at the operation initial stage; Along with the rising of yield, down-hole pressure descends, and aquifer yield increases, if the water that produces can not in time be discharged, will directly affect the production of gas well.Because the fluid-carrying capability of different flow strings is different, therefore the flow string of large latus rectum need to be replaced by the flow string of little latus rectum, to strengthen the effect of draining aerogenesis.
At present, changing flow string has conventional Well Killing change method, non-well killing change method or add the new operation techniques such as coiled tubing in original flow string.When adopting the well killing change flow string, because well killing fluid can injure stratum, contaminated environment; Some exploitation is to the mesolow well of middle and later periods in addition, can be crushed to death and is difficult to resume production.During the non-well killing change flow string, as run into abnormal conditions, can cause blowout or cause the danger such as flow string breaking releasing; In case have an accident, get rid of to get up just very difficult.Adding little latus rectum coiled tubing in original large latus rectum flow string, is a kind of safe and reliable method, in time resuming production and to improve the production capacity effect of gas well remarkable; Therefore research and develop the production tree that a kind of later stage can conveniently install little latus rectum coiled tubing, just become a direction of current techniques development.
The existing production tree that little latus rectum coiled tubing is installed exists when a few km coiled tubing is installed rubber sealing boot easy to wear; The single-stage hermetically-sealed construction is unreliable; And traditional production tree is when installing coiled tubing, needs to change the problem of the component such as threeway that in production tree, price is higher and crossover flange.
Summary of the invention
The utility model for its existing problems, is taked a series of new technical measures when continuous oil pipe operation technique adopt to be installed, a kind of more advanced, practical and double containment natural gas well production tree of being convenient to install coiled tubing is provided.
The utility model is comprised of tubing head reducing joint, many flap types, reducer tee, crossover flange, four-way, choke valve, screwed flange, pipe plug and the component such as gasket ring, bolt and nut, its difference is: when installing and using first, in the big column hole of reducer tee upper end, bellmouth and the thicker shoulder hole of crossover flange centre bore two of lower ends diameter, an abrasionproof lining and several O RunddichtringOs are housed; When the subsequent installation coiled tubing, in the big column hole of reducer tee upper end, bellmouth, coiled tubing, lower gasket ring, cartridge, upper gasket ring, conical surface clamping sleeve, slips hanger and slips connecting ring are housed from bottom to up; And in the thicker shoulder hole of crossover flange centre bore two of lower ends diameter, seal cartridge and supporting O RunddichtringO and the O RunddichtringO of minor diameter are housed.In addition, the utility model has also adopted new technical measures such as " cross section of lower gasket ring and upper gasket ring are processed into are trapezoidal projection on one side; H shape is processed in the cross section of cartridge, and saucerization is processed on the top of conical surface clamping sleeve, and slips hanger makes up with 3～6 slips ".
When installing and using first, just adopt reducer tee and the crossover flange of being convenient to install coiled tubing due to the utility model; When needs are installed coiled tubing, only need remove wherein abrasionproof lining and O RunddichtringO, thereby avoid changing the higher reducer tee of price and crossover flange.Square-section cartridge commonly used is changed into the cartridge of H tee section, under the effect of the trapezoidal projection of upper and lower gasket ring, can strengthen its sealing effectiveness; Above cartridge, then increase a seal cartridge and supporting O RunddichtringO, realized the sealing of dual many places, further improve the reliability of sealing.Adopt top to be processed into the conical surface clamping sleeve of saucerization, when thousands of meters coiled tubings were installed, charging-up lubricant oil in saucerization can reduce coiled tubing to the rigid wearing and tearing of cartridge.Cut into the slips hanger of 3～6, can increase the contact surface with coiled tubing, improve the effect that clamps.The above technical measures of comprehensive employing can make use function of the present utility model, sealing performance and economic benefit be improved comprehensively.
Description of drawings
Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described further.
Fig. 1 is overall structure schematic diagram of the present utility model;
Fig. 2 is the utility model when installing and using first, the part (in Fig. 1 I place) of abrasionproof lining and O RunddichtringO is installed in reducer tee and crossover flange part shifts out the full section structural representation;
Fig. 3 be the utility model when the subsequent installation coiled tubing, the part (in Fig. 1 I place) of coiled tubing and related components is installed in reducer tee and crossover flange part shifts out the full section structural representation.
Component title shown in attached number in the figure is as follows:
1, tubing head reducing joint, 2, flap type, 3, reducer tee, 4, crossover flange, 5, four-way, 6, choke valve, 7, screwed flange, 8, pipe plug, 9, gasket ring, 10, bolt and nut, 11, the jackscrew parts, 12, grease pouring valve, 13, abrasionproof lining, 14, the O RunddichtringO, 15, coiled tubing, 16, lower gasket ring, 17, cartridge, 18, upper gasket ring, 19, conical surface clamping sleeve, 20, slips hanger, 21, the slips connecting ring, 22, seal cartridge, 23, O RunddichtringO.
The specific embodiment
In Fig. 1, the utility model is by tubing head reducing joint (1), many flap types (2), reducer tee (3), crossover flange (4), four-way (5), choke valve (6), and many screwed flanges (7), pipe plug (8) and the component such as gasket ring (9), bolt and nut (10) form; Product with prior art there is no obvious difference in appearance; Its main innovation part concentrates on the inside of reducer tee (3) and crossover flange (4).
In Fig. 2, the utility model is the latus rectum of reducer tee (3) upper end, from top to bottom is expanded into successively bellmouth and a big column hole, uses the chamfering transition between big column hole and former access opening, is used for installing later on suspension and the obturator of coiled tubing; On the periphery on top, reducer tee (3) big column hole, be processed with the radially shoulder hole of several TBE (threaded both ends), Kong Zhongjun is equipped with jackscrew parts (11), is used for the big column hole of the setting reducer tee of fitted seal part (3) and the annular space between coiled tubing; Bellmouth bottom at reducer tee (3) center, the top of jackscrew parts (11), be processed with downward-sloping, the threaded greasing of a collar extension hole, a grease pouring valve (12) is equipped with at the place, aperture, is used for annotating lubrication oil or stop-leak compound in reducer tee (3).The utility model is also with the centre bore of crossover flange (4), from bottom to top, descending, be processed into three shoulder holes that diameter is different successively, be used for installing later on seal cartridge (22) and O RunddichtringO (14); Shoulder hole entrance at crossover flange (4) all is processed with chamfering, both sides, middle part at middle one-level shoulder hole, all be processed with the threaded radially greasing of collar extension hole, grease pouring valve (12) all is equipped with at the place, aperture, is used for annotating lubrication oil or stop-leak compound in crossover flange (4).
The utility model is when installing and using first, in the secondary shoulder hole of big column hole, bellmouth and crossover flange (4) the centre bore lower end of reducer tee (3) upper end, an abrasionproof lining (13) and several O RunddichtringOs (14) are housed, are worn in the gas production manufacturing process with the fitting face that prevents these installing holes.Abrasionproof lining (13) is a joint hollow section, and in two ends, the outside chamfering, in the above and below of its outer round surface, be processed with respectively 1～2 road rectangular seal groove, in-built 2 or 4 O RunddichtringOs (14).
In Fig. 3, at first the utility model removes the component of crossover flange (4) and top when subsequent installation coiled tubing (15), remove abrasionproof lining (13) and O RunddichtringO (14); In the big column hole of reducer tee upper end, bellmouth, load onto from bottom to up coiled tubing (15), lower gasket ring (16), cartridge (17), upper gasket ring (18), conical surface clamping sleeve (19), slips hanger (20) and slips connecting ring (21).The cross section of the top, cross section of lower gasket ring of the present utility model (16) and upper gasket ring (18) all is trapezoidal projection below, and the cross section of cartridge (17) is H shape; During assembling, the H shape upper and lower opening in the trapezoidal projection of upper gasket ring (18), lower gasket ring (16) and cartridge (17) cross section is engaged togather, guaranteeing them when being squeezed, produce the above potted line of twice to I haven't seen you for ages between the big column hole of coiled tubing (15) cylindrical and reducer tee (3).The centre of conical surface clamping sleeve (19) is through hole, and the bottom of cylindrical is that cylinder, middle part are that saucerization is processed on cone, top; Intermediate throughholes is the passage of coiled tubing (15), the lower cylindrical body be pressed in gasket ring (18) above, the conical surface of middle part cone contacts with the cone centre that reducer tee (3) is gone up uniform jackscrew parts (11), to form downward pressure; The saucerization on top should constantly inwardly add lubrication oil when mounted, to reduce the friction between coiled tubing (15) and cartridge (17).Slips hanger (20) is that 3～6 slips are combined with its dovetail groove and slips connecting ring (21) with " center is that the monoblock hollow cone of one dovetail groove is arranged on zigzag hole, outer conical surface " 3～6 slips that cutting forms; The polylith slips can increase the clamping lines of coiled tubing (15) and clamp effect, and can realize the function of Automatic-clamping and suspension under the Action of Gravity Field of coiled tubing (15).
In reducer tee (3) after successful suspension and sealing, then load onto the component such as seal cartridge (22) and crossover flange (4) in the top of coiled tubing (15) when coiled tubing (15).Seal cartridge (22) is peripheral hollow cylinder with the one-level step, and less, the highly long periphery of diameter, be processed with twice rectangular seal groove, in-built two O RunddichtringOs (14) above step; In the through hole in the middle of seal cartridge (22), also be processed with twice rectangular seal groove, the O RunddichtringO (23) of in-built two minor diameters; Between peripheral twice rectangular seal groove and between the twice rectangular seal groove in intermediate throughholes, also be processed with two greasing holes radially; On these two greasing holes radially and crossover flange (4) two radially the greasing hole be connected, in order to inject lubrication oil or stop-leak compound.
Claims (8)
1. a double containment production tree of being convenient to install coiled tubing, be comprised of tubing head reducing joint, many flap types, reducer tee, crossover flange, four-way, choke valve, screwed flange, pipe plug and the component such as gasket ring, bolt and nut.It is characterized in that:
When installing and using first, in the thicker shoulder hole of big column hole, bellmouth and crossover flange (4) two of the centre bore lower ends of reducer tee (3) upper end diameter, an abrasionproof lining (13) and several O RunddichtringOs (14) are housed;
When subsequent installation coiled tubing (15), in the big column hole of reducer tee (3) upper end, bellmouth, coiled tubing (15), lower gasket ring (16), cartridge (17), upper gasket ring (18), conical surface clamping sleeve (19), slips hanger (20) and slips connecting ring (21) are housed from bottom to up; And in the thicker shoulder hole of crossover flange (4) two of centre bore lower ends diameter, seal cartridge (22) and supporting O RunddichtringO (14) and the O RunddichtringO (23) of minor diameter are housed.
2. root a tree name double containment production tree of being convenient to install coiled tubing claimed in claim 1, it is characterized in that: in the bellmouth bottom at reducer tee (3) center, the top of jackscrew parts (11), be processed with downward-sloping, the threaded greasing of a collar extension hole, a grease pouring valve (12) is equipped with at the place, aperture;
3. root a tree name double containment production tree of being convenient to install coiled tubing claimed in claim 1, it is characterized in that: the centre bore of crossover flange (4), from bottom to top, descending, be processed into three shoulder holes that diameter is different successively, all be processed with chamfering in the entrance of shoulder hole; In the both sides, middle part of middle one-level shoulder hole, all be processed with the threaded radially greasing of collar extension hole, grease pouring valve (12) all is equipped with at the place, aperture.
4. root a tree name double containment production tree of being convenient to install coiled tubing claimed in claim 1, it is characterized in that: abrasionproof lining (13) is a joint hollow section, outside chamfering in two ends, above and below at its outer round surface, be processed with respectively 1～2 road rectangular seal groove, in-built 2 or 4 O RunddichtringOs (14).
5. root a tree name double containment production tree of being convenient to install coiled tubing claimed in claim 1, it is characterized in that: the centre of conical surface clamping sleeve (19) is through hole, and the bottom of cylindrical is that cylinder, middle part are cones, and saucerization is processed on top.
6. root a tree name double containment production tree of being convenient to install coiled tubing claimed in claim 1, it is characterized in that: the cross section of the top, cross section of lower gasket ring (16) and upper gasket ring (18) all is trapezoidal projection below, and the cross section of cartridge (17) is H shape; During assembling, the H shape upper and lower opening in the trapezoidal projection of upper gasket ring (18), lower gasket ring (16) and cartridge (17) cross section is engaged togather.
7. root a tree name double containment production tree of being convenient to install coiled tubing claimed in claim 1, it is characterized in that: slips hanger (20) is that 3～6 slips are combined with its dovetail groove and slips connecting ring (21) with " center is that the monoblock hollow cone of one dovetail groove is arranged on zigzag hole, outer conical surface " 3～6 slips that cutting forms.
8. with root a tree name double containment production tree of being convenient to install coiled tubing claimed in claim 1, it is characterized in that: seal cartridge (22) is peripheral hollow cylinder with the one-level step, less, the highly long periphery of diameter above step, be processed with twice rectangular seal groove, in-built two O RunddichtringOs (14); In the through hole in the middle of seal cartridge (22), also be processed with twice rectangular seal groove, the O RunddichtringO (23) of in-built two minor diameters; Between peripheral twice rectangular seal groove and between the twice rectangular seal groove in intermediate throughholes, also be processed with two greasing holes radially; On these two greasing holes radially and crossover flange (4) two radially the greasing hole be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220756712 CN202990942U (en) | 2012-12-26 | 2012-12-26 | Double-seal Christmas tree for conveniently mounting coiled tubing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220756712 CN202990942U (en) | 2012-12-26 | 2012-12-26 | Double-seal Christmas tree for conveniently mounting coiled tubing |
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| Publication Number | Publication Date |
|---|---|
| CN202990942U true CN202990942U (en) | 2013-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220756712 Expired - Lifetime CN202990942U (en) | 2012-12-26 | 2012-12-26 | Double-seal Christmas tree for conveniently mounting coiled tubing |
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| Country | Link |
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| CN (1) | CN202990942U (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470203A (en) * | 2013-08-20 | 2013-12-25 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Velocity string hanger of coiled tubing and hanging method thereof |
| CN103470227A (en) * | 2013-09-16 | 2013-12-25 | 洪泽东俊机械有限公司 | Deep-sea Christmas tree of offshore oil field |
| CN103790542A (en) * | 2013-09-13 | 2014-05-14 | 中国石油天然气股份有限公司 | High-temperature under-pressure test coiled tubing suspending sealing device and using method |
| CN104453768A (en) * | 2014-11-10 | 2015-03-25 | 宝鸡市赛孚石油机械有限公司 | Three-slip continuous oil pipe hanger |
| CN105275423A (en) * | 2014-06-15 | 2016-01-27 | 江苏宏泰石化机械有限公司 | Single-stage casing head with field-replaceable hanger |
| CN106321007A (en) * | 2016-08-31 | 2017-01-11 | 宝鸡石油机械有限责任公司广汉钻采设备厂 | WE type slip casing suspender with double U-shaped sealing ring structure |
| CN109458153A (en) * | 2018-11-30 | 2019-03-12 | 中国海洋石油集团有限公司 | A kind of oil recovery tree device suitable for setting suspension coiled tubing production forever |
| CN109538153A (en) * | 2019-01-21 | 2019-03-29 | 杰瑞能源服务有限公司 | A kind of Concentric Coiled Tubing hanger |
| CN110924888A (en) * | 2019-11-19 | 2020-03-27 | 中国石油集团渤海石油装备制造有限公司 | Multifunctional metal sealing type casing head |
| CN111364936A (en) * | 2020-04-09 | 2020-07-03 | 中国石油天然气股份有限公司 | Speed tubular column sealing suspension device with auxiliary sealing and sealing method |
| CN111577193A (en) * | 2019-02-18 | 2020-08-25 | 中海油能源发展股份有限公司 | Installation method of split casing head locking device |
-
2012
- 2012-12-26 CN CN 201220756712 patent/CN202990942U/en not_active Expired - Lifetime
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470203A (en) * | 2013-08-20 | 2013-12-25 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Velocity string hanger of coiled tubing and hanging method thereof |
| CN103790542A (en) * | 2013-09-13 | 2014-05-14 | 中国石油天然气股份有限公司 | High-temperature under-pressure test coiled tubing suspending sealing device and using method |
| CN103470227A (en) * | 2013-09-16 | 2013-12-25 | 洪泽东俊机械有限公司 | Deep-sea Christmas tree of offshore oil field |
| CN105275423B (en) * | 2014-06-15 | 2017-11-14 | 江苏宏泰石化机械有限公司 | It is a kind of can scene change hanger single-stage casing head |
| CN105275423A (en) * | 2014-06-15 | 2016-01-27 | 江苏宏泰石化机械有限公司 | Single-stage casing head with field-replaceable hanger |
| CN104453768B (en) * | 2014-11-10 | 2017-01-18 | 宝鸡市赛孚石油机械有限公司 | Three-slip continuous oil pipe hanger |
| CN104453768A (en) * | 2014-11-10 | 2015-03-25 | 宝鸡市赛孚石油机械有限公司 | Three-slip continuous oil pipe hanger |
| CN106321007A (en) * | 2016-08-31 | 2017-01-11 | 宝鸡石油机械有限责任公司广汉钻采设备厂 | WE type slip casing suspender with double U-shaped sealing ring structure |
| CN106321007B (en) * | 2016-08-31 | 2020-07-17 | 四川宝石机械钻采设备有限责任公司 | WE-type slip-type casing hanger with double U-shaped sealing ring structure |
| CN109458153A (en) * | 2018-11-30 | 2019-03-12 | 中国海洋石油集团有限公司 | A kind of oil recovery tree device suitable for setting suspension coiled tubing production forever |
| CN109458153B (en) * | 2018-11-30 | 2020-09-01 | 中国海洋石油集团有限公司 | Christmas tree device suitable for permanently placing and hanging coiled tubing production |
| CN109538153A (en) * | 2019-01-21 | 2019-03-29 | 杰瑞能源服务有限公司 | A kind of Concentric Coiled Tubing hanger |
| CN111577193A (en) * | 2019-02-18 | 2020-08-25 | 中海油能源发展股份有限公司 | Installation method of split casing head locking device |
| CN110924888A (en) * | 2019-11-19 | 2020-03-27 | 中国石油集团渤海石油装备制造有限公司 | Multifunctional metal sealing type casing head |
| CN111364936A (en) * | 2020-04-09 | 2020-07-03 | 中国石油天然气股份有限公司 | Speed tubular column sealing suspension device with auxiliary sealing and sealing method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130612 |