CN203050551U - External upset oil tube restoration structure used for oil and gas well - Google Patents
External upset oil tube restoration structure used for oil and gas well Download PDFInfo
- Publication number
- CN203050551U CN203050551U CN 201320041508 CN201320041508U CN203050551U CN 203050551 U CN203050551 U CN 203050551U CN 201320041508 CN201320041508 CN 201320041508 CN 201320041508 U CN201320041508 U CN 201320041508U CN 203050551 U CN203050551 U CN 203050551U
- Authority
- CN
- China
- Prior art keywords
- external upset
- external
- thread
- oil
- threads
- 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.)
- Expired - Lifetime
Links
Images
Abstract
An external upset oil tube restoration structure used for an oil and gas well comprises a tube body, a coupling and an adaptor. Buttress outer threads are machined on the outer surface of one end of the tube body, and external upset round threads are machined on the outer surface of the other end of the tube body. External upset round threads are machined on inner walls of two ends of the coupling. Buttress inner threads are machined on the inner wall of one end of the adaptor, and external upset round threads are machined on the outer surface of the other end of the adaptor. The external upset round threads at one end of the tube body are connected with the external upset round threads at one end of the coupling in a screwing mode, and the buttress outer threads at the other end of the tube body are connected with the buttress inner threads of the adaptor in a screwing mode. According to the restoration structure, a thread damage section of an external upset oil tube can be timely replaced, the restoration structure can be directly connected with the standard external upset oil tube, good exchangeability is achieved, tensile strength of the restored oil tube is the same as that of original external upset round threads, restoration cost is reduced, restoration efficiency is improved, and the external upset oil tube which is restored through the restoration structure has identical use performance as the standard external upset oil tube.
Description
Technical field
The utility model has related to that industrial gas oil oil gas well uses is convenient to connect repeatedly the external upset (EU) structure oil pipe that uses and repair, particularly a kind of oil gas well with the repair structure of external upset tubing.
Background technology
Oil pipe is used on the oil field in a large number as the well recovery passage.At present field use the most widely oil pipe be two kinds of plain end oil well pipe and external upset tubings, two kinds of oil pipes all adopt API Spec 5B oil pipe round thread.The coarse thread round thread is reprocessed out in external upset tubing body two ends after the jumping-up thickening, compare the plain end oil well pipe screw thread, its screw thread tensile strength higher (near body tensile strength), and the oil pipe supporting capacity is strong, is applicable to darker oil well.Along with improving constantly of petroleum resources exploitation degree, oil well bores darker and darker, and the consumption of external upset tubing is also increasing.
Oil well need regularly be examined pump and measure operation, the every operation of oil well once, the oil pipe tubing string all needs to unload once, it is limited unloading number of times on tubing round thread allowable, under big tightening torque, tubing round thread damages easily.Therefore the oil field all can produce big dipping tube every year needs maintenance, and wherein the screw thread reparation is important overhauling project.The traditional method of screw thread reparation has two kinds: a kind of is that damaged screw is cut away, and reprocesses the screw thread that makes new advances, but behind the external upset (EU) die head, its thick section has not existed, can only change the flat screw thread into, cause tubing round thread tensile strength significantly to reduce, limit its range of application; Another kind of restorative procedure is after the two ends reinforcement is cut away, and oil pipe two ends Stew again are thick, body carries out whole modified heat treatment, and again at two ends processing external upset (EU) screw thread, but the method has not only increased maintenance difficulty, and maintenance cost is increased considerably.
The utility model content
The utility model be fragile at the screw thread of conventional external upset tubing, change defectives such as frequent, that restorative procedure is loaded down with trivial details, a kind of repair structure that can in time change external upset tubing thread damage section is provided.
This is by the following technical solutions novel: a kind of oil gas well comprises body and box cupling with the repair structure of external upset tubing, also comprises becoming the button pipe nipple; Be processed with trapezoidal partially external screw thread on the external surface of described body one end, be processed with the external upset (EU) round thread on the external surface of the other end; Be processed with the external upset (EU) round thread respectively on the inwall of described box cupling two ends; Be processed with inclined to one side trapezoidal internal thread on the one end inwall of described change button pipe nipple, be processed with the external upset (EU) round thread on the other end external surface;
The external upset (EU) round thread of body one end is screwed in the external upset (EU) round thread of box cupling one end, and the trapezoidal partially external screw thread of the body other end is screwed in the inclined to one side trapezoidal internal thread that becomes the button pipe nipple.
Box cupling is connected with other bodys respectively with the free end that becomes the button pipe nipple.
Adopt above-mentioned repair structure to repair the method for external upset tubing, carry out according to following steps:
Box cupling on a, the oil pipe to be repaired that internal and external threads is all damaged screws down, and changes a new box cupling, and is screwed in body by screw thread, namely finishes the reparation of female end;
B, with the external upset (EU) end of thread excision of the body that damages, and this end is processed into trapezoidal partially external screw thread;
C, make to become the button pipe nipple, the endoporus of this changes button pipe nipple one end is processed into inclined to one side trapezoidal internal thread, the API round thread at the external surface processing external upset (EU) of its other end becomes the screw thread of detaining the pipe nipple two ends and all handles through phosphatization;
The female end of d, the change button pipe nipple that will process and the trapezoidal partially male end of body are twisted and are connected together, and namely finish externally threaded reparation.
The advantage of this oil pipe repair structure disclosed in this invention is: this repair structure is by body, box cupling and change button pipe nipple constitute, box cupling and become the free-ended screw thread of button pipe nipple and be complementary with the screw thread of other body ends respectively, can realize thread damage section on the external upset tubing is in time changed, make the two ends of the external upset tubing integral body after repairing still keep external upset tubing thread, can directly be connected with the external upset tubing of standard, has good interchangeability, the tensile strength of the oil pipe after the reparation and original external upset (EU) round thread is suitable, reduce rehabilitation cost, improve remediation efficiency, guaranteeing to be threaded reliably, under the situation of sealing, adopt this reparation unit to repair external upset tubing afterwards and have the functional performance identical with the standard external upset tubing.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Among the figure: box cupling external upset (EU) round thread 1, box cupling 2, body external upset (EU) round thread 3, body 4, body buttress thread 5 becomes button pipe nipple 6, becomes button pipe nipple external upset (EU) round thread 7.
The specific embodiment
Below in conjunction with accompanying drawing to originally using novel being described further.
Referring to accompanying drawing 1, this oil gas well is to damage the reparation unit that section is changed, repaired at external upset tubing thread with the repair structure of external upset tubing, comprises body 4 and box cupling 2, also comprises becoming button pipe nipple 6.Wherein: be processed with trapezoidal partially external screw thread on the external surface of body 4 one ends, namely the body buttress thread 5, are processed with the external upset (EU) round thread on the external surface of body 4 other ends, i.e. body external upset (EU) screw thread 3; Be processed with the external upset (EU) round thread respectively on the two ends inwall of box cupling 2; Be processed with inclined to one side trapezoidal internal thread on the one end inwall of change button pipe nipple 6, be processed with the external upset (EU) round thread on the other end external surface, namely become button pipe nipple external upset (EU) round thread.
The external upset (EU) round thread of body 4 one ends is screwed in the external upset (EU) round thread of box cupling 2 one ends, and the body buttress thread 5 of body 4 other ends is screwed in the inclined to one side trapezoidal internal thread that becomes button pipe nipple 6.Box cupling is that box cupling external upset (EU) round thread 1 is connected with other bodys respectively with change button pipe nipple external upset (EU) round thread 7 with the free end that becomes the button pipe nipple, because box cupling external upset (EU) round thread 1 and change button pipe nipple external upset (EU) round thread 7 all are external upset tubing threads up to specification, can directly be connected with external upset tubing, can intercommunication exchange.
Adopt above-mentioned reparation unit to repair the method for external upset tubing, carry out according to following steps:
Box cupling on a, the oil pipe to be repaired that internal and external threads is all damaged screws down, change a new box cupling, and be screwed in body by screw thread, namely finish the reparation of female end, can directly be connected with the external upset (EU) round thread section that pipe nipple is buckled in body or the change of other outer oiling oil pipes, guarantee the tensile strength of body;
B, with the external upset (EU) end of thread excision of the body that damages, and this end is processed into trapezoidal partially external screw thread;
C, make to become the button pipe nipple, the endoporus of this changes button pipe nipple one end is processed into inclined to one side trapezoidal internal thread, the round thread (being generally the API round thread of external upset (EU)) at the external surface processing external upset (EU) of its other end becomes the screw thread of detaining the pipe nipple two ends and all handles through phosphatization;
The female end of d, the change button pipe nipple that will process and the trapezoidal partially male end of body are twisted and are connected together, namely finish externally threaded reparation, after the buttress thread of the buttress thread that the body end processes and change snapping hoop one end is screwed in together, can substitute original external upset (EU) round thread, guarantee the tensile strength of body, connect when using, becoming suit one box cupling 2 on the button pipe nipple external upset (EU) round thread 7, can realize being connected with the prolongation of body.
Claims (2)
1. the repair structure of an oil gas well usefulness external upset tubing comprises body and box cupling, it is characterized in that, also comprises becoming the button pipe nipple; Be processed with trapezoidal partially external screw thread on the external surface of described body one end, be processed with the external upset (EU) round thread on the external surface of the other end; Be processed with the external upset (EU) round thread respectively on the inwall of described box cupling two ends; Be processed with inclined to one side trapezoidal internal thread on the one end inwall of described change button pipe nipple, be processed with the external upset (EU) round thread on the other end external surface;
The external upset (EU) round thread of described body one end is screwed in the external upset (EU) round thread of box cupling one end, and the trapezoidal partially external screw thread of the body other end is screwed in the inclined to one side trapezoidal internal thread that becomes the button pipe nipple.
2. oil gas well according to claim 1 is characterized in that with the repair structure of external upset tubing, and described box cupling is connected with other bodys respectively with the free end that becomes the button pipe nipple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320041508 CN203050551U (en) | 2013-01-25 | 2013-01-25 | External upset oil tube restoration structure used for oil and gas well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320041508 CN203050551U (en) | 2013-01-25 | 2013-01-25 | External upset oil tube restoration structure used for oil and gas well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203050551U true CN203050551U (en) | 2013-07-10 |
Family
ID=48733516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320041508 Expired - Lifetime CN203050551U (en) | 2013-01-25 | 2013-01-25 | External upset oil tube restoration structure used for oil and gas well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203050551U (en) |
-
2013
- 2013-01-25 CN CN 201320041508 patent/CN203050551U/en not_active Expired - Lifetime
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3205918B1 (en) | Threaded joint for steel pipes | |
| US8973953B2 (en) | Seal between pipe sections | |
| CN103527110A (en) | Multistage sealing anti-sticky buckle type thread for titanium alloy oil casing | |
| CN203783486U (en) | Thread gluing prevention drill rod joint | |
| CN103628827A (en) | Anti-bonding three-stage end surface metal sealing threaded connector for titanium alloy pipe | |
| CN206317019U (en) | It is broken pipe joint screwing-out device | |
| CN203050551U (en) | External upset oil tube restoration structure used for oil and gas well | |
| CN102852466B (en) | Special buttress thread oil sleeve connecting joint | |
| CN104018788A (en) | Drill rod joint with thread profiles | |
| CN203035112U (en) | Novel structural oil pipeline for oil and gas well | |
| CN205477404U (en) | External upset tubing | |
| CN202913974U (en) | Oil pipe for oil and gas wells | |
| CN208203730U (en) | A kind of fast-type steel bar connecting machine structure | |
| CN211370316U (en) | Safety joint convenient to release | |
| CN203036152U (en) | Quick reducer union for purging pipeline | |
| CN202578554U (en) | Special buttress thread oil sleeve connection joint | |
| CN203050538U (en) | Novel oil tube for oil and gas well | |
| CN105350925A (en) | Anti-corrosion high-temperature-resistant lining structure for TP-JC oil well pipe with special thread | |
| CN204754802U (en) | Glass steel oil pipe connector | |
| CN205277324U (en) | Be used for corrosion -resistant high temperature resistant lining structure of special knot oil well pipe of TP -JC | |
| CN204252856U (en) | A kind of deep & ultra-deep well aluminium drill pipe joint | |
| CN102926674A (en) | Low pressure gas seal special screwed joint | |
| CN205172459U (en) | Oily casing coupling of antiseized knot anticorrosives | |
| CN105604498A (en) | External thickened oil pipe | |
| CN212454292U (en) | Oil pipe joint |
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 Co.,Ltd. Address before: 063200 No. 27 Xincheng street, Tanghai County, 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: 20201104 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 Co.,Ltd. Address before: 100000 Beijing city Dongcheng District No. 16 Andrew Patentee before: PetroChina Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130710 |
|
| CX01 | Expiry of patent term |