CN205477404U - External upset tubing - Google Patents
External upset tubing Download PDFInfo
- Publication number
- CN205477404U CN205477404U CN201620265968.1U CN201620265968U CN205477404U CN 205477404 U CN205477404 U CN 205477404U CN 201620265968 U CN201620265968 U CN 201620265968U CN 205477404 U CN205477404 U CN 205477404U
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- CN
- China
- Prior art keywords
- oil pipe
- pipe body
- api standard
- sealing surface
- box cupling
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- 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.)
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- 238000007789 sealing Methods 0.000 claims description 21
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 230000008439 repair process Effects 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 3
- 238000012769 bulk production Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 9
- 239000003129 oil well Substances 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Earth Drilling (AREA)
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
Abstract
The utility model relates to an oil pipe specifically is an external upset tubing. Including the oil pipe body, oil pipe body one end is equipped with API standard external screw thread, and the oil pipe body other end has the lock joint of change hoop through tapered tread structural connection trapezoidal partially, and the change lock joint hoop other end is equipped with the API standard internal thread with API standard matching the external screw. The utility model discloses can simplify body manufacturing process, reduce manufacturing cost, satisfy oil pipe and unload the screw damage that results in crop restoration needs many times in using on frequent, very suitable as the construction oil pipe who unloads on frequent, the API standard external upset tubing who is applicable to in addition the screw damage repairs, has reduced screw repair costs, can show lengthen its life, and application range is wide, but bulk production manufacturing use.
Description
Technical field
This utility model relates to oil pipe, specifically a kind of external upset tubing.
Background technology
Oil pipe is as well recovery passage, it is that oil field development produces necessary valuable cargo, it is widely used at each oil gas field, current is plain end oil well pipe and external upset tubing two kinds at the widest oil pipe of field use, two kinds of oil pipes all use API oil pipe round thread, wherein external upset tubing, its body two ends thicken through jumping-up, reprocess out coarse thread round thread, therefore, compare plain end oil well pipe screw thread, its screw thread tensile strength higher (close to body tensile strength), range is wider, it is applicable to deeper oil well, along with improving constantly of petrol resources exploitation degree, oil well bores deeper and deeper, the consumption of external upset tubing is the most increasing.
nullOil well needs periodically to carry out examining pump and measure operation，The every operation of oil well is once，Oil pipe column is required for unloading once，Tubing round thread allowable on to unload number of times be limited，Under high pulling torque，Tubing round thread easily damages，Therefore，Each oil field the most all can create big dipping tube needs maintenance，Wherein screw thread reparation is important overhauling project，The traditional method of screw thread reparation is to be cut away by damaged screw，The recycling new screw thread of lathe in machining，After external upset (EU) die head，Its thick section has not existed，Generally can only change flat screw thread into，This method causes tubing round thread tensile strength to significantly reduce，Limit its range of application，Another kind of repair mode be the reinforcement of damage is cut away after again thick and heat treatment，Reprocessing external upset (EU) round thread，But the method not only increases maintenance difficulty，And make maintenance cost increase considerably.
Utility model content
This utility model aims to solve the problem that the problems referred to above, thus provides a kind of external upset tubing that can reduce screw thread rehabilitation cost, increase the service life.
This utility model solves described problem, the technical scheme is that
A kind of external upset tubing, including oil pipe body, oil pipe body one end is provided with API standard external screw thread, and the oil pipe body other end is connected by the most trapezoidal tapered tread structure has variable buckle box cupling, the variable buckle box cupling other end to be provided with the API standard female thread coordinated with API standard external screw thread.
Using this utility model of technique scheme, compared with prior art, its prominent feature is:
1. change the structure thicker meeting the external upset tubing two ends of API standard into one end structure thicker, tube manufacturing process can be simplified, reduce manufacturing cost.
2. oil pipe body installs variable buckle box cupling by the most trapezoidal tapered tread structure, by external upset end jumping-up to long enough, meet during oil pipe uses and to unload the screw thread caused on frequently and damage repeatedly crop and repair needs, it is highly suitable on frequently the construction oil pipe unloaded, and be also applied for the API standard external upset tubing of screw thread damage is repaired, reduce screw thread rehabilitation cost, it is possible to significantly extend its service life.
3. range is wide, can manufacture use in a large number.
As preferably, this utility model further technical scheme is:
The most trapezoidal tapered tread end of oil pipe body is provided with sealing surface, constitutes shape metallic leak-proof structure with variable buckle box cupling.
Concrete, the oil pipe body sealing surface of the most trapezoidal circular cone male threaded end of oil pipe body is the sealing surface that a circle raises up, the variable buckle box cupling sealing surface adapted with oil pipe body sealing surface it is machined with on variable buckle box cupling, oil pipe body sealing surface constitutes shape metallic leak-proof structure with variable buckle box cupling sealing surface, makes oil pipe reach zero leakage condition with threadeding of variable buckle box cupling.
Accompanying drawing explanation
Fig. 1 is this utility model example structure schematic diagram；
Fig. 2 is A portion enlarged drawing in Fig. 1；
In figure: variable buckle box cupling 1；API standard female thread 2；The most trapezoidal circular cone external screw thread 3；The most trapezoidal conical inner screw thread 4；Oil pipe body 5；API standard external screw thread 6；Oil pipe body sealing surface 7；Variable buckle box cupling sealing surface 8.
Detailed description of the invention:
Below in conjunction with embodiment, the utility model is described in further detail, and purpose is only that and is more fully understood that this utility model content, and therefore, the cited case is not limiting as protection domain of the present utility model.
nullSee Fig. 1、Fig. 2，The most trapezoidal circular cone external screw thread 3 it is machined with on the external cylindrical surface of oil pipe body 5 one end，Oil pipe body 5 other end jumping-up goes out the external cylindrical surface of certain length，And it is machined with API standard external screw thread 6，The one section of thick-walled seamless steel pipes using size and mechanical performance to meet requirement makes variable buckle box cupling 1，One end endoporus of variable buckle box cupling 1 is machined with the most trapezoidal conical inner screw thread 4 coordinated with oil pipe body 5 one end the most trapezoidal circular cone external screw thread 3，Variable buckle box cupling 1 other end endoporus is machined with the API standard female thread 2 coordinated with oil pipe body 5 other end API standard external screw thread 6，The most trapezoidal conical inner screw thread 4 one end of variable buckle box cupling 1 is tightened on the most trapezoidal circular cone external screw thread 3 one end of oil pipe body 5 by the moment of torsion of regulation，The most trapezoidal circular cone external screw thread 3 end of oil pipe body 5 is machined with the oil pipe body sealing surface 7 that a circle raises up，The variable buckle box cupling sealing surface 8 adapted with oil pipe body sealing surface 7 it is machined with on variable buckle box cupling 1，Oil pipe body sealing surface 7 and variable buckle box cupling sealing surface 8 constitute shape metallic leak-proof structure，Oil pipe body 5 is made to reach zero leakage condition with threadeding of variable buckle box cupling 1.
The API standard external upset tubing restorative procedure that external screw thread damages: the external screw thread that oil pipe body 5 damages is cut away, process the most trapezoidal circular cone external screw thread 3, and get up with variable buckle box cupling 1 twist-on, then the old box cupling of oil pipe body 5 other end is screwed down (the API standard external screw thread 6 of this end is intact), this completes reparation, the most trapezoidal tapered tread structure designs, its tensile strength can be close to body intensity, being equivalent to the tensile strength of original external upset (EU) round thread, therefore this repair mode is equal strength renovation technique.
This utility model API standard external upset tubing difference general with our times is: the body two ends of existing API standard external upset tubing are all through jumping-up and be machined with API standard circular cone round thread, and one end jumping-up of body is only thickeied by the present invention, and process API standard circular cone round thread, the body other end does not thickeies and processes the most trapezoidal tapered tread on the external diameter of pipe end, the connection screw thread of the present invention and API standard oil pipe have absolute interchangeability, and onsite application is very convenient.
This utility model has two significant advantages: one is that the structure thicker at the external upset tubing two ends by meeting API standard changes one end structure thicker into, can simplify tube manufacturing process, reduce manufacturing cost；Two is that oil pipe body installs variable buckle box cupling by the most trapezoidal tapered tread structure, by external upset end jumping-up to long enough, meet during oil pipe uses and to unload the screw thread caused on frequently and damage repeatedly crop and repair needs, it is highly suitable on frequently the construction oil pipe unloaded, and be also applied for the API standard external upset tubing of screw thread damage is repaired, reduce screw thread rehabilitation cost, it is possible to significantly extend its service life.
The foregoing is only the embodiment that this utility model is the most feasible, not thereby limit to interest field of the present utility model, the equivalence change that all utilization this utility model description and accompanying drawing content thereof are made, within being both contained in interest field of the present utility model.
Claims (3)
1. an external upset tubing, including oil pipe body, oil pipe body one end is provided with API standard external screw thread, it is characterised in that: the oil pipe body other end is connected by the most trapezoidal tapered tread structure has variable buckle box cupling, the variable buckle box cupling other end to be provided with the API standard female thread coordinated with API standard external screw thread.
External upset tubing the most according to claim 1, it is characterised in that: the most trapezoidal tapered tread end of oil pipe body is provided with sealing surface, constitutes shape metallic leak-proof structure with variable buckle box cupling.
External upset tubing the most according to claim 2, it is characterized in that: the oil pipe body sealing surface of the most trapezoidal circular cone male threaded end of oil pipe body is the sealing surface that a circle raises up, being machined with the variable buckle box cupling sealing surface adapted with oil pipe body sealing surface on variable buckle box cupling, oil pipe body sealing surface constitutes shape metallic leak-proof structure with variable buckle box cupling sealing surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620265968.1U CN205477404U (en) | 2016-04-03 | 2016-04-03 | External upset tubing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620265968.1U CN205477404U (en) | 2016-04-03 | 2016-04-03 | External upset tubing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205477404U true CN205477404U (en) | 2016-08-17 |
Family
ID=56646343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620265968.1U Active CN205477404U (en) | 2016-04-03 | 2016-04-03 | External upset tubing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205477404U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105604498A (en) * | 2016-04-03 | 2016-05-25 | 唐山冀东石油机械有限责任公司 | External thickened oil pipe |
-
2016
- 2016-04-03 CN CN201620265968.1U patent/CN205477404U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105604498A (en) * | 2016-04-03 | 2016-05-25 | 唐山冀东石油机械有限责任公司 | External thickened oil pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200929 Address after: 100000 Beijing city Dongcheng District No. 16 Andrew Patentee after: PetroChina Company Limited Address before: 063200, 27, Xincheng Avenue, Caofeidian District, Hebei, Tangshan City Patentee before: TANGSHAN JIDONG PETROLEUM MACHINERY Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201020 Address after: No.10 Guoan Road, comprehensive bonded zone, Caofeidian Industrial Zone, Tangshan City, Hebei Province Patentee after: TANGSHAN JIDONG PETROLEUM MACHINERY Co.,Ltd. Patentee after: PetroChina Company Limited Address before: 100000 Beijing city Dongcheng District No. 16 Andrew Patentee before: PetroChina Company Limited |
|
| TR01 | Transfer of patent right |