CN105735931A - Double-pipe thermal recovery wellhead device and double-pipe four-way joint thereof - Google Patents
Double-pipe thermal recovery wellhead device and double-pipe four-way joint thereof Download PDFInfo
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- CN105735931A CN105735931A CN201410768034.5A CN201410768034A CN105735931A CN 105735931 A CN105735931 A CN 105735931A CN 201410768034 A CN201410768034 A CN 201410768034A CN 105735931 A CN105735931 A CN 105735931A
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- tube
- way
- heat extraction
- vertical passage
- channel
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- 238000011084 recovery Methods 0.000 title abstract description 8
- 238000010793 Steam injection (oil industry) Methods 0.000 claims abstract description 12
- 230000009977 dual effect Effects 0.000 claims description 37
- 238000000605 extraction Methods 0.000 claims description 37
- 239000000956 alloy Substances 0.000 claims description 8
- 229910045601 alloy Inorganic materials 0.000 claims description 8
- 239000000725 suspension Substances 0.000 claims description 4
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical group [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000003628 erosive effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
The invention provides a double-pipe thermal recovery wellhead device and a double-pipe four-way joint thereof. Wherein, double-barrelled cross includes: a first longitudinal channel mated with the main pipe hanger; the first transverse channel is matched with the first gate valve and connected to the first longitudinal channel; the second longitudinal channel is matched with the auxiliary pipe hanger and is positioned on one side of the first longitudinal channel; the inclined channel matched with the steam injection device is positioned on one side of the first longitudinal channel, and one end of the inclined channel is connected with one end of the second longitudinal channel; the second transverse channel is matched with the second gate valve and connected to the oblique channel; and the inner walls of the first longitudinal channel, the second longitudinal channel, the first transverse channel, the second transverse channel and the inclined channel are all provided with wear-resistant layers. The technical scheme of the invention can effectively solve the problem that the double-pipe four-way joint of the double-pipe thermal recovery wellhead device is easily damaged by fatigue in the prior art.
Description
Technical field
The present invention relates to oilfield exploitation technical field, in particular to a kind of Dual tubing heat extraction wellhead and two-tube four-way thereof.
Background technology
Dual tubing heat extraction wellhead is the important device for thickened oil recovery, is mainly made up of tubing head, casing head and production tree three parts.Wherein, two-tube four-way is the vitals of composition production tree.In oil recovery process, viscous crude is by by the production tree part of Dual tubing heat extraction wellhead.Now, two-tube four-way is the main pressure-containing member of whole production tree part.Thus two-tube four-way is most susceptible to fatigue damage.In actual use, the maintenance of two-tube four-way, replacement frequency are high, substantially increase cost for oil production.
Along with the fast development of petroleum industry, the reliability of Dual tubing heat extraction wellhead is had higher requirement by oil field.Stress in order to reduce cross intersection and intersection place, turning inside two-tube four-way as far as possible is concentrated, and people start to consider two-tube four-way is carried out structural improvement.But, the function owing to being subject to two-tube four-way is limited to, and list is started with from structural improvement, and its improvement effect is very micro-.Therefore, in the prior art, it is impossible to efficiently solve the problem that two-tube four-way is easily subject to fatigue damage.
Summary of the invention
Present invention is primarily targeted at a kind of Dual tubing heat extraction wellhead of offer and two-tube four-way thereof, to solve the problem that the two-tube four-way that cannot efficiently solve Dual tubing heat extraction wellhead of the prior art is easily subject to fatigue damage.
To achieve these goals, according to an aspect of the invention, it is provided a kind of two-tube four-way for Dual tubing heat extraction wellhead, two-tube four-way includes: the first vertical passage coordinated with supervisor's hanger of Dual tubing heat extraction wellhead；With the first interconnection that the first gate valve of Dual tubing heat extraction wellhead coordinates, the first interconnection is connected on the first vertical passage；The second vertical passage with the looped pipeline hanger of Dual tubing heat extraction wellhead coordinates, is positioned at the side of the first vertical passage；With the slanted channel that the gas filling device of Dual tubing heat extraction wellhead coordinates, be positioned at the side of the first vertical passage, one end of slanted channel connects with one end of the second vertical passage；With the second interconnection that the second gate valve of Dual tubing heat extraction wellhead coordinates, the second interconnection is connected on slanted channel；The inwall of the first vertical passage, the second vertical passage, the first interconnection, the second interconnection and slanted channel is provided with wearing layer.
Further, wearing layer is wear-resistant alloy layer.
Further, the material of wear-resistant alloy layer is tungsten carbide.
Further, the thickness of wearing layer is in the scope of 0.9mm to 1.1mm.
Further, the bottom of two-tube four-way is provided with first annular connector.
Further, Dual tubing heat extraction wellhead also includes connecting sleeve pipe, connects sleeve pipe and is positioned at the lower section of two-tube four-way, and the top connecting sleeve pipe is provided with the second circular connector coordinated with first annular connector.
Further, first annular connector and the second circular connector are bolted.
Further, gas filling device is bolted the upper port place at slanted channel.
Further, gas filling device includes steam injection hanger and the suspension black box of the lower end being arranged on steam injection hanger.
According to a further aspect in the invention, it is provided that a kind of Dual tubing heat extraction wellhead, including two-tube four-way, two-tube four-way is above-mentioned two-tube four-way.
Application technical scheme, all increases on the inwall of the first vertical passage of two-tube four-way, the second vertical passage, the first interconnection, the second interconnection and slanted channel and is provided with wearing layer.In oil recovery process, what the arranging of above-mentioned wearing layer can be greatly enhanced in two-tube four-way each passage resistance to wear, erosion resistance, efficiently solves two-tube four-way and is easily subject to the problem of fatigue damage, thus improve the durability of Dual tubing heat extraction wellhead.
Accompanying drawing explanation
The Figure of description constituting the part of the application is used for providing a further understanding of the present invention, and the schematic description and description of the present invention is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 illustrates the structural representation of the embodiment of the Dual tubing heat extraction wellhead according to the present invention and two-tube four-way thereof.
Wherein, above-mentioned accompanying drawing includes the following drawings labelling:
10, two-tube four-way；11, first annular connector；
21, the first vertical passage；22, the second vertical passage；
31, the first interconnection；32, the second interconnection；
40, slanted channel；51, supervisor's hanger；
52, looped pipeline hanger；61, the first gate valve；
62, the second gate valve；70, sleeve pipe is connected；
71, the second circular connector；81, steam injection hanger；
82, black box is hung.
Detailed description of the invention
It should be noted that when not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined.Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
It it is noted that described further below is all exemplary, it is intended to provide further instruction to the application.Unless otherwise, all technology used herein and scientific terminology have the identical meanings being generally understood that with the application person of an ordinary skill in the technical field.
It should be noted that term used herein above merely to describe detailed description of the invention, and be not intended to the restricted root illustrative embodiments according to the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative is also intended to include plural form, in addition, it is to be further understood that, when using term " comprising " and/or " including " in this manual, it indicates existing characteristics, step, operation, device, assembly and/or their combination.
It should be noted that term " first " in the description and claims of this application and above-mentioned accompanying drawing, " second " etc. are for distinguishing similar object, without being used for describing specific order or precedence.Should be appreciated that the data of so use can be exchanged in the appropriate case, in order to presently filed embodiment described herein such as can with except here diagram or describe those except order implement.In addition, term " includes " and " having " and their any deformation, it is intended to cover non-exclusive comprising, such as, contain series of steps or the process of unit, method, system, product or equipment be not necessarily limited to those steps or the unit clearly listed, but can include clearly not listing or for intrinsic other step of these processes, method, product or equipment or unit.
For the ease of describing, here can use space relative terms, as " ... on ", " in ... top ", " at ... upper surface ", " above " etc., be used for describing the spatial relation of a device or feature and other devices or feature as shown in the figure.It should be appreciated that space relative terms is intended to the different azimuth in use or operation comprised except the orientation that device is described in the drawings.Such as, " in other devices or structure lower section " or " under other devices or structure " will be positioned as after if the device in accompanying drawing is squeezed, being then described as the device of " above other devices or structure " or " on other devices or structure ".Thus, exemplary term " in ... top " can include " in ... top " and " in ... lower section " two kinds of orientation.This device can also other different modes position rotating 90 degree or be in other orientation, and space used herein above described relatively make respective explanations.
As it is shown in figure 1, the two-tube four-way 10 for Dual tubing heat extraction wellhead of the present embodiment includes the first vertical passage 21 that the supervisor's hanger 51 with Dual tubing heat extraction wellhead coordinates；With the first interconnection 31 that the first gate valve 61 of Dual tubing heat extraction wellhead coordinates, the first interconnection 31 is connected on the first vertical passage 21；The second vertical passage 22 coordinated with the looped pipeline hanger 52 of Dual tubing heat extraction wellhead, is positioned at the side of the first vertical passage 21；The slanted channel 40 coordinated with the gas filling device of Dual tubing heat extraction wellhead, is positioned at the side of the first vertical passage 21, and one end of slanted channel 40 connects with one end of the second vertical passage 22；With the second interconnection 32 that the second gate valve 62 of Dual tubing heat extraction wellhead coordinates, the second interconnection 32 is connected on slanted channel 40.The inwall of first vertical passage the 21, second vertical passage the 22, first interconnection the 31, second interconnection 32 and slanted channel 40 is provided with wearing layer.
The two-tube four-way of application the present embodiment, all increases on first vertical passage the 21, second vertical passage the 22, first interconnection the 31, second interconnection 32 of two-tube four-way 10 and the inwall of slanted channel 40 and is provided with wearing layer.In oil recovery process, what the arranging of above-mentioned wearing layer can be greatly enhanced in two-tube four-way 10 each passage resistance to wear, erosion resistance, efficiently solves two-tube four-way and is easily subject to the problem of fatigue damage, thus improve the durability of Dual tubing heat extraction wellhead.
As it is shown in figure 1, in the two-tube four-way of the present embodiment, wearing layer is wear-resistant alloy layer.Wear-resistant alloy layer is common wearing layer form, and its technique is simple, it is easy to accomplish.
As it is shown in figure 1, in the two-tube four-way of the present embodiment, the material of wear-resistant alloy layer is tungsten carbide.The hardness of tungsten carbide is higher, it is possible to effectively strengthen the abrasion resistance of wear-resistant alloy layer.
As it is shown in figure 1, in the two-tube four-way of the present embodiment, the thickness of wearing layer is in the scope of 0.9mm to 1.1mm.In the thickness range of above-mentioned wearing layer, both can ensure that the anti-wear performance of wearing layer, do not interfere with again the flowing of liquid in two-tube four-way 10.
As it is shown in figure 1, in the two-tube four-way of the present embodiment, the bottom of two-tube four-way 10 is provided with first annular connector 11.Dual tubing heat extraction wellhead also includes connecting sleeve pipe 70, connects sleeve pipe 70 and is positioned at the lower section of two-tube four-way 10, and the top connecting sleeve pipe 70 is provided with the second circular connector 71 coordinated with first annular connector 11.Said structure is common pipeline connected mode, simple in construction, it is easy to accomplish.
As it is shown in figure 1, in the two-tube four-way of the present embodiment, first annular connector 11 and the second circular connector 71 are bolted.Bolt fastening structure is simple, convenient disassembly.
As it is shown in figure 1, in the two-tube four-way of the present embodiment, gas filling device is bolted the upper port place at slanted channel 40.Bolt fastening structure is simple, is conducive to the dismounting of gas filling device.
As it is shown in figure 1, in the two-tube four-way of the present embodiment, gas filling device includes steam injection hanger 81 and the suspension black box 82 of the lower end being arranged on steam injection hanger 81.Steam injection hanger 81 is used for hanging steam injection pipe, and can seal the annular space between steam injection pipe and sleeve pipe.Additionally, arrange suspension black box 82 can effectively strengthen the sealing between steam injection pipe and sleeve pipe.
In from the description above, can be seen that, the above embodiments of the present invention achieve following technique effect: in oil recovery process, in two-tube four-way 10 wearing layer of each passage arrange can be greatly enhanced its resistance to wear, erosion resistance, efficiently solve two-tube four-way and be easily subject to the problem of fatigue damage, thus improve the durability of Dual tubing heat extraction wellhead.
Present invention also provides a kind of Dual tubing heat extraction wellhead, include above-mentioned two-tube four-way according to the embodiment of the Dual tubing heat extraction wellhead of the application.Owing to having above-mentioned two-tube four-way, the service life of the Dual tubing heat extraction wellhead of the present embodiment obtains significant raising.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (10)
1., for a two-tube four-way for Dual tubing heat extraction wellhead, described two-tube four-way (10) including:
The first vertical passage (21) coordinated with supervisor's hanger (51) of described Dual tubing heat extraction wellhead；
The first interconnection (31) coordinated with first gate valve (61) of described Dual tubing heat extraction wellhead, described first interconnection (31) is connected on described first vertical passage (21)；
With the second vertical passage (22) that the looped pipeline hanger (52) of described Dual tubing heat extraction wellhead coordinates, be positioned at the side of described first vertical passage (21)；
The slanted channel (40) coordinated with the gas filling device of described Dual tubing heat extraction wellhead, being positioned at the side of described first vertical passage (21), one end of described slanted channel (40) connects with one end of described second vertical passage (22)；
The second interconnection (32) coordinated with second gate valve (62) of described Dual tubing heat extraction wellhead, described second interconnection (32) is connected on described slanted channel (40)；
It is characterized in that,
The inwall of described first vertical passage (21), the second vertical passage (22), the first interconnection (31), the second interconnection (32) and slanted channel (40) is provided with wearing layer.
2. two-tube four-way according to claim 1, it is characterised in that described wearing layer is wear-resistant alloy layer.
3. two-tube four-way according to claim 2, it is characterised in that the material of described wear-resistant alloy layer is tungsten carbide.
4. two-tube four-way according to claim 1, it is characterised in that the thickness of described wearing layer is in the scope of 0.9mm to 1.1mm.
5. two-tube four-way according to claim 1, it is characterised in that the bottom of described two-tube four-way (10) is provided with first annular connector (11).
6. two-tube four-way according to claim 5, it is characterized in that, described Dual tubing heat extraction wellhead also includes connecting sleeve pipe (70), described connection sleeve pipe (70) is positioned at the lower section of described two-tube four-way (10), and the top of described connection sleeve pipe (70) is provided with the second circular connector (71) coordinated with described first annular connector (11).
7. two-tube four-way according to claim 6, it is characterised in that described first annular connector (11) and described second circular connector (71) are bolted.
8. two-tube four-way according to claim 1, it is characterised in that described gas filling device is bolted the upper port place at described slanted channel (40).
9. two-tube four-way according to claim 8, it is characterised in that described gas filling device includes steam injection hanger (81) and is arranged on the suspension black box (82) of lower end of described steam injection hanger (81).
10. a Dual tubing heat extraction wellhead, including two-tube four-way, it is characterised in that described two-tube four-way is the two-tube four-way according to any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410768034.5A CN105735931A (en) | 2014-12-11 | 2014-12-11 | Double-pipe thermal recovery wellhead device and double-pipe four-way joint thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410768034.5A CN105735931A (en) | 2014-12-11 | 2014-12-11 | Double-pipe thermal recovery wellhead device and double-pipe four-way joint thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105735931A true CN105735931A (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410768034.5A Pending CN105735931A (en) | 2014-12-11 | 2014-12-11 | Double-pipe thermal recovery wellhead device and double-pipe four-way joint thereof |
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| CN (1) | CN105735931A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2419366Y (en) * | 2000-03-31 | 2001-02-14 | 中国石油天然气股份有限公司塔里木油田分公司 | Work carrier style isolative sealer for electric cable at hole top for underground electric pump |
| CN102287156A (en) * | 2011-08-05 | 2011-12-21 | 中国石油天然气股份有限公司 | Concentric pipe wellhead device for exploiting thickened oil by steam assisted gravity drainage |
| CN103277063A (en) * | 2013-05-31 | 2013-09-04 | 江苏宏泰石化机械有限公司 | Tangential vortex annulus fracturing wellhead device |
| US20140060855A1 (en) * | 2008-02-11 | 2014-03-06 | Cameron International Corporation | Angled-penetrator device and system |
| CN203626681U (en) * | 2013-08-30 | 2014-06-04 | 中国石油天然气集团公司 | Single-tube wellhead device for thermal recovery with pressure |
| CN204457559U (en) * | 2014-12-11 | 2015-07-08 | 中国石油天然气股份有限公司 | Double-pipe thermal recovery wellhead device and double-pipe four-way joint thereof |
-
2014
- 2014-12-11 CN CN201410768034.5A patent/CN105735931A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2419366Y (en) * | 2000-03-31 | 2001-02-14 | 中国石油天然气股份有限公司塔里木油田分公司 | Work carrier style isolative sealer for electric cable at hole top for underground electric pump |
| US20140060855A1 (en) * | 2008-02-11 | 2014-03-06 | Cameron International Corporation | Angled-penetrator device and system |
| CN102287156A (en) * | 2011-08-05 | 2011-12-21 | 中国石油天然气股份有限公司 | Concentric pipe wellhead device for exploiting thickened oil by steam assisted gravity drainage |
| CN103277063A (en) * | 2013-05-31 | 2013-09-04 | 江苏宏泰石化机械有限公司 | Tangential vortex annulus fracturing wellhead device |
| CN203626681U (en) * | 2013-08-30 | 2014-06-04 | 中国石油天然气集团公司 | Single-tube wellhead device for thermal recovery with pressure |
| CN204457559U (en) * | 2014-12-11 | 2015-07-08 | 中国石油天然气股份有限公司 | Double-pipe thermal recovery wellhead device and double-pipe four-way joint thereof |
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| PB01 | Publication | ||
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Application publication date: 20160706 |