CN209261497U - Oil transportation casing corrosion tests link device on a kind of well - Google Patents
Oil transportation casing corrosion tests link device on a kind of well Download PDFInfo
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- CN209261497U CN209261497U CN201822083220.1U CN201822083220U CN209261497U CN 209261497 U CN209261497 U CN 209261497U CN 201822083220 U CN201822083220 U CN 201822083220U CN 209261497 U CN209261497 U CN 209261497U
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Abstract
The utility model belongs to oil gas oil transportation casing corrosion monitoring technical field, and in particular to oil transportation casing corrosion tests link device on a kind of well；It is connect including top connection, screwed pipe, reference test bar and link piece group, one end of the screwed pipe with top connection, the other end is connect with reference test bar, and link piece group is set on the outside of reference test bar, and the diameter of the screwed pipe is greater than the diameter of link piece group.Design difficulty is high when the utility model solves the detection of existing tube corrosion, processing is complicated, mounting means is complicated, there is technical issues that, down-hole oil tube corrosion test link device provided by the utility model uses helicitic texture, it is directly mounted at oil pipe corner, is mounted and dismounted very convenient；Oil pipe turning is common connector and threaded hole is arranged, and test link device is by being above threaded into threaded hole, it is only necessary to guarantee that link is completely submerged in pipeline, connector easy processing nor affects on pipeline entire compression ability simultaneously.
Description
Technical field
The utility model belongs to derived energy chemical field, and in particular to oil gas oil transportation casing corrosion monitoring technology, more particularly to
Oil transportation casing corrosion tests link device on a kind of well.
Background technique
In tubing string tripping in production casing column, the channel of underground oil-gas Layer and ground is constituted, controls former oil and gas
Flowing.Most of oil wells are after operation, and with the extension of mining time, crude oil water content is gradually increased, and corrosive environment is further
Harshness causes oil pipe wall thickness thinning, and the tensile strength of oil pipe is caused to decline, and will appear oil pipe perforation, or even fracture when serious, gives
Layered producing zones produce difficult and security risk.Link some used about oil pipe internal corrosion detection at present is mounted under tubing string
Portion mother blocks up position, but since from reservoir to well head, oily overpressure, temperature are gradually decreased, the corrosion condition of tube inner wall is not to the utmost
Identical, this method cannot detect the internal corrosion situation of full well section oil pipe；Some detections are used is arranged ring inside oil pipe
The shortcomings that steel loop is arranged in a ring groove and detects for shape slot, this mode is accordingly reduce oil pipe intensity；Some detections are not
Under the premise of reducing tubing string bonding strength, expands oil pipe and be shorted dimension of inner and outer diameters, expand the inside and outside diameter of tubing nipple, to add
Work installs interior link, welds link again then to meet the latus rectum requirement of entire tubing string, but the design and processing are complex,
Oil pipe is shorted specification and is difficult to match specific tubing string (being shorted specification needs specific customization).
Summary of the invention
Design difficulty is high when in order to solve the detection of existing tube corrosion, processing is complicated, mounting means is complicated, there are safety
The technical issues of hidden danger, the utility model provide petroleum pipeline corrosion test link device on a kind of well.
The technical solution of the utility model:
Oil transportation casing corrosion tests link device on a kind of well, the difference is that: including top connection, upper screwed pipe, survey
Bar and link piece group, one end of the upper screwed pipe are connect with top connection, and the other end of upper screwed pipe is connect with lower screwed pipe,
Link piece group is set to outside reference test bar, and the diameter of the upper screwed pipe is greater than the diameter of lower screwed pipe.Using helicitic texture, directly
It connects and is installed on oil pipe corner, mount and dismount very convenient.For convenient disassembly, link piece group is by 3-10 link piece group
At being provided with spacing along reference test bar between link piece.The quantity of link piece artificially adjusts as needed, and measurement range is wide.
In order to guarantee that the corrosion condition of link piece can really reflect the corrosion condition of oil pipe pipeline, the link piece be with
The identical cyclic structure of pipe under test material.
To facilitate installation, top connection is additionally provided with plug, plug 2 is directly connected to screwed pipe.
It is convenient for disassembly and assembly for save the cost, it further include installation bolt, link piece group is set on reference test bar and passes through installation
Bolt is fixed.
In order to draw materials conveniently, cost is saved, the screwed pipe is the outer silk of standard DN, reach 20-200mm.
In order to guarantee that the corrosion condition of link piece can really reflect the corrosion condition of oil pipe pipeline, the link piece it is interior
Diameter is 5-20mm, outer diameter 20-30mm, thickness 1-6mm.
The constant gap for guaranteeing link piece, further includes isolation ring, and the barrier cuff, which is loaded on reference test bar, is located at adjacent extension
Between ring plate.It is sequentially arranged on reference test bar when assembling according to the sequence of isolation ring, link piece.
It is adjusted convenient for the spacing of link piece, multiple isolation rings can be set between adjacent link piece.
The material of isolation ring is plastics, rubber, polytetrafluoroethylene (PTFE) or ceramics.
Advantage possessed by the utility model:
1, down-hole oil tube corrosion test link device provided by the utility model uses helicitic texture, is directly mounted at oil
Pipe corner mounts and dismounts very convenient；Oil pipe turning is common connector and threaded hole is arranged, and test link device passes through upper spiral shell
Line is threaded into hole, it is only necessary to guarantee that link is completely submerged in pipeline, it is whole that connector easy processing nor affects on pipeline simultaneously
Body anti-pressure ability.
2, down-hole oil tube corrosion test link device provided by the utility model is installed using screw thread, without stopping production, not having to
Get angry；Set-up time is short, and j ob impact is small.
3, the link piece quantity and size of down-hole oil tube corrosion test link device provided by the utility model can bases
Test needs to increase or decrease, to meet different corrosion rate test requests.
4, the utility model installs isolation ring between each link piece, guarantees the spacing between link piece, so that link
The corrosion condition of piece can directly reflect the corrosion condition of oil pipe pipeline.
Detailed description of the invention
Fig. 1 is the overall structure figure that oil transportation casing corrosion tests link device on the utility model well；
Fig. 2 is the scheme of installation of the utility model link device；
Wherein: 1- top connection, 2- plug, 3- screwed pipe, 4- reference test bar, 5- link piece group, 6- isolation ring, 7- install spiral shell
Bolt.
Specific embodiment
Embodiment 1: oil transportation casing corrosion tests link device on a kind of well as shown in Figure 1, from top to bottom successively are as follows: above connect
Head, plug, screwed pipe, reference test bar, link piece and isolation ring, one end of the screwed pipe are connect with top connection, screwed pipe it is another
One end is connect with reference test bar, and screw thread is arranged in link piece and isolation ring, and can match with the screw thread of threaded rod；According to isolation
The sequence of isolation ring installs five groups to ring --- link piece --- one by one.
Wherein, for convenience of the standard size hex(agonal)screw of dismounting, screwed pipe is DN60 standard female, screw thread for top connection
Length is 30mm；Test shank diameter is 10mm, and 5 link pieces of outside setting, it is 2cm, thickness 2mm that extension, which changes piece outer diameter,；Isolation ring 4
Using plastics ring set, internal diameter be equal to lower screw thread caliber, outer diameter be equal to hang changes piece outer diameter, will often with link piece equidistant intervals；Its
Middle top connection, plug, screwed pipe, reference test bar, link piece material be J55 steel, the material of isolation ring is polytetrafluoroethylene (PTFE)；Individually
The weight of link piece is in 20g or so.
When link device is installed, it is installed on the corner joint of oil pipe by screwed pipe, guarantees that all link pieces are all exposed to
In oil gas, after oil pipe continues working 100 days, link device is removed, link piece is removed and send to laboratory, calculate this after weighing comparison
The corrosivity of preceding 100 days oil gas, and then just can be inferred that corrosion of the oil gas to oil pipe in 100 days before this；Repeat aforesaid operations,
The rate of corrosion of per a period of time is recorded, to realize the monitoring to tube corrosion status, successfully avoids security risk.
Embodiment 2: preferred, installation bolt can also be arranged in link device, and reference test bar, link piece and isolation ring do not have spiral shell
It is outer and be fixed by installation bolt that line structure, link piece and isolation ring are directly sleeved on reference test bar, reference test bar, link piece,
The difficulty of processing reduction of isolation ring, cost reduction, link piece and isolation ring take dress also more convenient.
Embodiment 3: under certain condition, when the quantitative requirement of link piece is less, can increase between each link piece or
The quantity of the outer isolation ring of both ends link piece then improves the use of whole link device to protect reference test bar not corroded by oil gas
Service life.
Claims (10)
1. oil transportation casing corrosion tests link device on a kind of well, it is characterised in that: including top connection (1), screwed pipe (3), test
One end of bar (4) and link piece group (5), the screwed pipe (3) is connect with top connection (1), and the other end is connect with reference test bar (4),
Link piece group (5) is set on the outside of reference test bar (4), and the diameter of the screwed pipe (3) is greater than the diameter of link piece group (5).
2. oil transportation casing corrosion tests link device on well according to claim 1, it is characterised in that: the link piece group
(5) it is made of 3-10 link piece, reference test bar (4) is provided with spacing between link piece.
3. on well according to claim 2 oil transportation casing corrosion test link device, it is characterised in that: the link piece be with
The identical cyclic structure of pipe under test material.
4. oil transportation casing corrosion tests link device on well according to claim 3, it is characterised in that: top connection (1) is also set
It is equipped with plug (2), plug (2) is directly connected to screwed pipe (3).
5. oil transportation casing corrosion tests link device on a kind of -4 any well according to claim 1, it is characterised in that: also
Including installing bolt (7), link piece group (5) is set on reference test bar (4) and is fixed by installation bolt (7).
6. oil transportation casing corrosion tests link device on well according to claim 5, it is characterised in that: the screwed pipe (3)
For silk outside standard DN, reach 20-200mm.
7. on well according to claim 4 oil transportation casing corrosion test link device, it is characterised in that: the link piece it is interior
Diameter is 5-20mm, outer diameter 20-30mm, thickness 1-6mm.
8. oil transportation casing corrosion tests link device on well according to claim 6, it is characterised in that: further include isolation ring
(6), the isolation ring (6) is set on reference test bar (4) between adjacent link piece.
9. oil transportation casing corrosion tests link device on well according to claim 8, it is characterised in that: between adjacent link piece
Multiple isolation rings can be set.
10. oil transportation casing corrosion tests link device on well according to claim 9, it is characterised in that: the material of isolation ring
For plastics, rubber, polytetrafluoroethylene (PTFE) or ceramics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822083220.1U CN209261497U (en) | 2018-12-12 | 2018-12-12 | Oil transportation casing corrosion tests link device on a kind of well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822083220.1U CN209261497U (en) | 2018-12-12 | 2018-12-12 | Oil transportation casing corrosion tests link device on a kind of well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209261497U true CN209261497U (en) | 2019-08-16 |
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ID=67563091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822083220.1U Active CN209261497U (en) | 2018-12-12 | 2018-12-12 | Oil transportation casing corrosion tests link device on a kind of well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209261497U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112129690A (en) * | 2020-09-24 | 2020-12-25 | 中国石油化工股份有限公司 | Downhole corrosion monitoring device and method of making same |
-
2018
- 2018-12-12 CN CN201822083220.1U patent/CN209261497U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112129690A (en) * | 2020-09-24 | 2020-12-25 | 中国石油化工股份有限公司 | Downhole corrosion monitoring device and method of making same |
| CN112129690B (en) * | 2020-09-24 | 2023-04-07 | 中国石油化工股份有限公司 | Downhole corrosion monitoring device and method of making same |
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