CN110005346A - A kind of petroleum sleeve joint of metal loop seals - Google Patents
A kind of petroleum sleeve joint of metal loop seals Download PDFInfo
- Publication number
- CN110005346A CN110005346A CN201910270675.0A CN201910270675A CN110005346A CN 110005346 A CN110005346 A CN 110005346A CN 201910270675 A CN201910270675 A CN 201910270675A CN 110005346 A CN110005346 A CN 110005346A
- Authority
- CN
- China
- Prior art keywords
- screw thread
- steel pipe
- external screw
- pipe external
- box cupling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003208 petroleum Substances 0.000 title claims abstract description 21
- 239000002184 metal Substances 0.000 title claims abstract description 18
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 52
- 239000010959 steel Substances 0.000 claims abstract description 52
- 238000012856 packing Methods 0.000 claims abstract description 26
- 238000007789 sealing Methods 0.000 claims description 26
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- -1 polytetrafluoroethylene Polymers 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/08—Casing joints
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/08—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing
- F16J15/0806—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing characterised by material or surface treatment
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Gasket Seals (AREA)
Abstract
The invention discloses a kind of petroleum sleeve joints of metal loop seals, including steel pipe external screw thread factory end, steel pipe external screw thread scene end, box cupling and X-type metallic packing ring, box cupling is provided with internal screw thread, steel pipe external screw thread factory end is linked together by screw thread and box cupling, steel pipe external screw thread scene end box cupling is inserted in by make-up device, when box cupling is together with steel pipe external screw thread factory end and steel pipe external screw thread scene end twist-on, the end face at steel pipe external screw thread factory end and the end face at steel pipe external screw thread scene end are in close contact, the two sides of center line are provided with groove on the longitudinal profile of box cupling, X-type metallic packing ring is arranged in the groove, X-type metallic packing ring includes two upper support legs and two lower support legs.The present invention uses metal loop seals, has better seal performance, thermal cycle and pressures cycle performance.
Description
Technical field
The invention belongs to oil exploitation dedicated pipe technical fields, and in particular to a kind of petroleum casing pipe of metal loop seals connects
Head.
Background technique
In recent years, as the exploitation difficulty of conventional oil gas well is increasing and standard API(American Petroleum Institute) screw thread
The economic benefit of connector tubing and casing is low, thus needs to develop a kind of not only had an economic benefit but also to be able to satisfy mining environment more severe
The petroleum sleeve joint of (high temperature and pressure).Existing API nipple just has of short duration only under the mating reaction of thread compound
Sealing performance, and in not applicable oil and gas industry gas well.Current petroleum sleeve joint generallys use high molecular material
As sealing element, such as polytetrafluoroethylene (PTFE), but polytetrafluoroethylene (PTFE) has clearly disadvantageous place, has " cold flow properties ",
It is plastically deformed under the effect of long-time continuous load, when external force is more than specific compression stress, " cold flow " can be generated
(creep) and be crushed, lose sealing function, and polytetrafluoroethylene (PTFE) have it is outstanding non-stick, it is viscous with the surface of other objects
It closes extremely difficult.In consideration of it, it is necessary to make improvement to traditional petroleum sleeve joint.
Summary of the invention
To solve the deficiencies in the prior art, the purpose of the present invention is to provide a kind of metal loop seals, have better
The petroleum sleeve joint of sealing performance, thermal cycle and pressures cycle performance.
In order to achieve the above objectives, the present invention adopts the following technical scheme that:
A kind of petroleum sleeve joint of metal loop seals, including steel pipe external screw thread factory end, steel pipe external screw thread scene end, box cupling and
X-type metallic packing ring, box cupling are provided with internal screw thread, and steel pipe external screw thread factory end is linked together by screw thread and box cupling, steel pipe
Box cupling is inserted in by make-up device in external screw thread scene end, and box cupling exists with steel pipe external screw thread factory end and steel pipe external screw thread scene end twist-on
When together, the end face at steel pipe external screw thread factory end and the end face at steel pipe external screw thread scene end are in close contact, the longitudinal profile of box cupling
The two sides of upper center line are provided with groove, and X-type metallic packing ring is arranged in the groove, and X-type metallic packing ring includes on two
The outer surface at stabilizer blade and two lower support legs, lower support leg and steel pipe external screw thread factory end and steel pipe external screw thread scene end forms close close
Tight sealing contact is formed on the bottom of sealing-in touching, upper support leg and groove.
Preferably, the first cylinder is respectively arranged on the inside of aforementioned steel pipe external screw thread factory end and steel pipe external screw thread scene end
The end face of section and the second cylindrical section, the first cylindrical section and the second cylindrical section is provided with outer chamfer, can make the first cylindrical section and the
Two cylindrical sections pass through X-type metallic packing ring, play guiding role, avoid damage X-type metallic packing ring.
More preferably, the length of aforementioned first cylindrical section and the second cylindrical section is 11 ~ 13mm, and the angle of outer chamfer is 60
~65°。
It is highly preferred that the angle α on aforementioned X-shaped sealing ring longitudinal profile is 100 ~ 120 °, angle β is 40 ~ 60 °, length
It is highly 1.7 ~ 3.2mm for 1.8 ~ 3.8mm.
It is further preferred that the top of aforementioned upper support leg and the bottom end of lower support leg are respectively arranged with sealing surface and lower sealing
Face.
Specifically, aforementioned upper sealing surface and the width of lower sealing surface are 0.3 ~ 0.5mm, are highly 0.2 ~ 0.4mm.
Preferably, the bottom lengths of aforementioned grooves are 2 ~ 4mm, and width is 1.5 ~ 3mm.
The invention has the beneficial effects that: the petroleum sleeve joint of metal loop seals of the invention has better sealing
Can, thermal cycle and pressures cycle performance；Metallic packing ring has high rebound type, and the leakproofness of connector can be improved；First circle
The end face of shell of column and the second cylindrical section is provided with outer chamfer, and the first cylindrical section and the second cylindrical section can be made to pass through X-type gold
Belong to sealing ring, play guiding role, avoids damage X-type metallic packing ring.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the structural schematic diagram that metal in close contacts hermetic unit in the present invention；
Fig. 3 is the structural schematic diagram that steel pipe external screw thread factory end is in contact with steel pipe external screw thread scene end end face in the present invention；
Fig. 4 is the structural schematic diagram of X-type metallic packing ring in the present invention.
The meaning of appended drawing reference in figure: B1, steel pipe external screw thread factory end, B2, steel pipe external screw thread scene end, A, box cupling, C, X
Type metallic packing ring, 1, upper support leg, 2, lower support leg, 4, the end face at steel pipe external screw thread factory end, 5, steel pipe external screw thread scene end
End face, the 9, first cylindrical section, the 10, second cylindrical section, 11, groove, 12, center line.
Specific embodiment
Specific introduce is made to the present invention below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1,2,3 and 4, a kind of petroleum sleeve joint of metal loop seals of the invention, including steel pipe external screw thread work
Factory end B1, steel pipe external screw thread scene end B2, box cupling A and X-type metallic packing ring C, box cupling A are provided with internal screw thread, steel pipe external screw thread
Factory end B1 is linked together by screw thread and box cupling A, and steel pipe external screw thread scene end B2 is inserted in box cupling A, box cupling A by make-up device
When together with steel pipe external screw thread factory end B1 and steel pipe external screw thread scene end B2 twist-on, the end face 4 at steel pipe external screw thread factory end
It is in close contact with the end face 5 at steel pipe external screw thread scene end, to play positioning action, while reducing the circumferential direction between internal and external threads and answering
Power.
The two sides of center line 12 are provided with groove 11, bottom lengths (i.e. Fig. 2 of groove 11 on the longitudinal profile of box cupling A
In 6) be 2 ~ 4mm, width is (i.e. 7 in Fig. 2) 1.5 ~ 3mm, and X-type metallic packing ring C is set in groove 11.In practical operation
When, first two X-type metallic packing ring C are individually positioned in two grooves 11 of box cupling A, by steel pipe external screw thread work in factory
Factory end B1 and box cupling A is tightened, and when operating at the scene, steel pipe external screw thread scene end B2 is inserted in box cupling A, elder generation after hitch by make-up device
2 circles or so are screwed in using the slow-speed of revolution, the revolving speeds for then enclosing left and right per minute using 15 screw in when last 1 ~ 2 circle, with lower than 5
Revolving speed per minute is enclosed to be further threaded into predetermined position.
The first cylindrical section 9 and are respectively arranged on the inside of steel pipe external screw thread factory end B1 and steel pipe external screw thread scene end B2
The end face of two cylindrical sections 10, the first cylindrical section 9 and the second cylindrical section 10 is provided with outer chamfer, can make the first cylindrical section 9 and
Two cylindrical sections 10 pass through X-type metallic packing ring C, play guiding role, avoid damage X-type metallic packing ring C.First cylinder
Section 9 and the length (i.e. L3 and L4 in Fig. 3) of the second cylindrical section 10 are 11 ~ 13mm, preferably 12mm, angle (i.e. Fig. 3 of outer chamfer
Middle θ 1 and θ 2) it is 60 ~ 65 °.
X-type metallic packing ring C includes two upper support legs 1 and two lower support legs 2, lower support leg 2 and steel pipe external screw thread factory end
The outer surface (i.e. 8 in Fig. 2) of the cylindrical section of B1 and steel pipe external screw thread scene end B2 forms tight sealing contact, upper support leg 1 with it is recessed
Tight sealing contact is formed on the bottom of slot 11, to reach better seal effect, better thermal cycle and pressures cycle effect.
Angle α on X-shaped sealing ring longitudinal profile is 100 ~ 120 °, and angle β is 40 ~ 60 °, and length (i.e. L in Fig. 4) is 1.8 ~ 3.8mm,
It is preferred that 3mm, height (i.e. H in Fig. 4) is 1.7 ~ 3.2mm, preferably 2.5mm.The top of upper support leg 1 and the bottom end difference of lower support leg 2
It is provided with sealing surface and lower sealing surface, the width (i.e. L1 and L2 in Fig. 4) of upper sealing surface and lower sealing surface is 0.3 ~
0.5mm, preferably 0.4mm, height (i.e. h1 and h2 in Fig. 4) is 0.2 ~ 0.4mm, preferably 0.3mm, the X-type metallic packing ring C tool
Have high rebound type so that install X-type metallic packing ring C petroleum sleeve joint have better seal performance, thermal cycle with
And the performances such as pressures cycle.
The petroleum sleeve joint of metal loop seals of the invention has better seal performance, thermal cycle and pressures cycle
Performance；Metallic packing ring has high rebound type, and the leakproofness of connector can be improved；First cylindrical section 9 and the second cylindrical section 10
End face is provided with outer chamfer, and the first cylindrical section 9 and the second cylindrical section 10 can be made to pass through X-type metallic packing ring C, play and lead
To effect, damage X-type metallic packing ring C is avoided.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should
Understand, the above embodiments do not limit the invention in any form, all obtained by the way of equivalent substitution or equivalent transformation
Technical solution is fallen within the scope of protection of the present invention.
Claims (7)
1. a kind of petroleum sleeve joint of metal loop seals, which is characterized in that including steel pipe external screw thread factory end, steel pipe external screw thread
Live end, box cupling and X-type metallic packing ring, the box cupling are provided with internal screw thread, and steel pipe external screw thread factory end passes through screw thread
It links together with box cupling, box cupling, the box cupling and steel pipe external screw thread are inserted in by make-up device in steel pipe external screw thread scene end
When factory end is together with the twist-on of steel pipe external screw thread scene end, the end face and steel pipe external screw thread scene end at steel pipe external screw thread factory end
End face be in close contact, the two sides of center line are provided with groove, the X-type metallic packing ring on the longitudinal profile of the box cupling
It is arranged in the groove, X-type metallic packing ring includes two upper support legs and two lower support legs, the lower support leg and steel pipe external screw thread work
The bottom of the outer surface at factory end and steel pipe external screw thread scene end formation tight sealing contact, the upper support leg and groove is formed closely
It is in sealing contact.
2. a kind of petroleum sleeve joint of metal loop seals according to claim 1, which is characterized in that the outer spiral shell of the steel pipe
The first cylindrical section and the second cylindrical section, first cylinder are respectively arranged on the inside of line factory end and steel pipe external screw thread scene end
The end face of section and the second cylindrical section is provided with outer chamfer.
3. a kind of petroleum sleeve joint of metal loop seals according to claim 2, which is characterized in that first cylinder
Section and the length of the second cylindrical section are 11 ~ 13mm, and the angle of the outer chamfer is 60 ~ 65 °.
4. a kind of petroleum sleeve joint of metal loop seals according to claim 1, which is characterized in that the X-type sealing
The angle α enclosed on longitudinal profile is 100 ~ 120 °, and angle β is 40 ~ 60 °, and it is highly 1.7 ~ 3.2mm that length, which is 1.8 ~ 3.8mm,.
5. a kind of petroleum sleeve joint of metal loop seals according to claim 1, which is characterized in that the upper support leg
Top and the bottom end of lower support leg are respectively arranged with sealing surface and lower sealing surface.
6. a kind of petroleum sleeve joint of metal loop seals according to claim 5, which is characterized in that the upper sealing surface
Width with lower sealing surface is 0.3 ~ 0.5mm, is highly 0.2 ~ 0.4mm.
7. a kind of petroleum sleeve joint of metal loop seals according to claim 1, which is characterized in that the bottom of the groove
Minister's degree is 2 ~ 4mm, and width is 1.5 ~ 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910270675.0A CN110005346A (en) | 2019-04-04 | 2019-04-04 | A kind of petroleum sleeve joint of metal loop seals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910270675.0A CN110005346A (en) | 2019-04-04 | 2019-04-04 | A kind of petroleum sleeve joint of metal loop seals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110005346A true CN110005346A (en) | 2019-07-12 |
Family
ID=67169939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910270675.0A Pending CN110005346A (en) | 2019-04-04 | 2019-04-04 | A kind of petroleum sleeve joint of metal loop seals |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110005346A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458180A (en) * | 2020-11-10 | 2022-05-10 | 中国石油天然气股份有限公司 | Sleeve connecting device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06129573A (en) * | 1992-10-13 | 1994-05-10 | Mitsubishi Plastics Ind Ltd | Anti-corrosive pipe fitting |
| JPH10318455A (en) * | 1997-05-21 | 1998-12-04 | Nippon Steel Corp | Tapered screw joint structure for oil well pipe |
| CN201310305Y (en) * | 2008-11-04 | 2009-09-16 | 西安华衡石油管业有限公司 | Screw thread connecting structure of oil pipe for oil well or sleeve of gas well |
| US20120119489A1 (en) * | 2008-04-30 | 2012-05-17 | Shcherbakov Boris Yur Evich | Tightly threaded joint for oil field pipes |
| CN202380987U (en) * | 2011-12-30 | 2012-08-15 | 中国石油天然气集团公司 | Internal-external thread connector of thin-wall expansion pipe |
| CN203114195U (en) * | 2012-12-27 | 2013-08-07 | 中国海洋石油总公司 | Special threaded bushing |
| CN205606035U (en) * | 2016-04-21 | 2016-09-28 | 成都来宝石油设备有限公司 | Fastening type coupling for petroleum pipeline |
| CN210134816U (en) * | 2019-04-04 | 2020-03-10 | 靖江特殊钢有限公司 | Oil casing joint sealed by metal ring |
-
2019
- 2019-04-04 CN CN201910270675.0A patent/CN110005346A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06129573A (en) * | 1992-10-13 | 1994-05-10 | Mitsubishi Plastics Ind Ltd | Anti-corrosive pipe fitting |
| JPH10318455A (en) * | 1997-05-21 | 1998-12-04 | Nippon Steel Corp | Tapered screw joint structure for oil well pipe |
| US20120119489A1 (en) * | 2008-04-30 | 2012-05-17 | Shcherbakov Boris Yur Evich | Tightly threaded joint for oil field pipes |
| CN201310305Y (en) * | 2008-11-04 | 2009-09-16 | 西安华衡石油管业有限公司 | Screw thread connecting structure of oil pipe for oil well or sleeve of gas well |
| CN202380987U (en) * | 2011-12-30 | 2012-08-15 | 中国石油天然气集团公司 | Internal-external thread connector of thin-wall expansion pipe |
| CN203114195U (en) * | 2012-12-27 | 2013-08-07 | 中国海洋石油总公司 | Special threaded bushing |
| CN205606035U (en) * | 2016-04-21 | 2016-09-28 | 成都来宝石油设备有限公司 | Fastening type coupling for petroleum pipeline |
| CN210134816U (en) * | 2019-04-04 | 2020-03-10 | 靖江特殊钢有限公司 | Oil casing joint sealed by metal ring |
Non-Patent Citations (1)
| Title |
|---|
| 化工部设备设计技术中心站: "化工设备设计手册材料与零部件上", 30 November 1997, 辽宁科学技术出版社, pages: 205 - 802 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458180A (en) * | 2020-11-10 | 2022-05-10 | 中国石油天然气股份有限公司 | Sleeve connecting device |
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