CN206020238U - A kind of device for evaluating drilling rod undercoating corrosion resisting property - Google Patents
A kind of device for evaluating drilling rod undercoating corrosion resisting property Download PDFInfo
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- CN206020238U CN206020238U CN201620885245.1U CN201620885245U CN206020238U CN 206020238 U CN206020238 U CN 206020238U CN 201620885245 U CN201620885245 U CN 201620885245U CN 206020238 U CN206020238 U CN 206020238U
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Abstract
The utility model discloses a kind of device for evaluating drilling rod undercoating corrosion resisting property, including：Primary heater and secondary heater, multi-stage motor agitator, sample installing port and stress loading device；Wherein stress loading device includes tensile stress charger, distorting stress charger and bending stress charger.The device that application this utility model is provided, can evaluate resistant to chemical media corrosive nature and erosion property of the drilling rod undercoating under stretching, bending or distorting stress effect；By adjusting temperature and pressure, and it is passed through H2S、CO2Deng corrosive gas, the drilling rod undercoating Service Environment of various working difference well section can be simulated.Therefore, this utility model selection internally coated to Oil Field drilling rod and biometry are significant.
Description
Technical field：
This utility model belongs to oil well pipe corrosion evaluation technical field, more particularly to a kind of evaluation drilling rod undercoating corrosion resistance
The device of energy.
Background technology：
During oil gas well mining, in the working environment (drilling mud and stratum) of drilling rod, often contain Korrosionsmedium (such as
O2、H2S、CO2、Cl-And the catabolite of drilling mud additives etc.), these Korrosionsmediums can produce serious rotten to drilling rod
Erosion.Simultaneously in drilling process, add when drilling rod still suffers from tensile, compressive, bending, torsion, oscillating load, rotating centrifugal and makes a trip
Under Dynamic Load etc., working condition is very severe.Under the collective effect of above-mentioned various factors, drilling rod corrosion failure is often resulted in.
It is to prevent drilling rod from sending out corrosion to apply undercoating, improves one of effective safeguard procedures of service life of drilling rod.But,
Drilling rod undercoating species is various, and quality is uneven, in use, the undercoating case for causing drilling rod to fail off quality
Example happens occasionally.For this purpose, scientific research technical staff has carried out substantial amounts of grinding to the internally coated micromechanism of damage of drilling rod, preventive measure etc.
Study carefully, while also developing the assay device of some evaluation undercoating military service performances.
The testing equipment that undercoating military service performance can be evaluated at present is few, mainly has：(1) Chinese patent
CN104913979A is disclosed " a kind of corrosion-inhibiting coating high temperature high voltage resistant evaluation experimental device and test method ", the device by plus
Hot systems, compression system, pressure-measuring system, high pressure valve and pipeline composition；Having main steps that for test method will be to be detected
Coating sample corrosion-resistanting test bucket in, sealing, after then making temperature within the barrel and pressure reach rated condition, according still further to requirement of experiment
Time heat-insulation pressure keeping, until experiment terminate；Sample observation is finally taken out.(2) disclose in Chinese patent CN204269486U
" a kind of pipeline coatings bend test device ", the device include electro-hydraulic system, three portions of test-bed and bending mould
Point；The device bending controllable-rate, can be effectively ensured bending precision, measure the extreme flexion performance of pipeline coatings.(3) China is special
Disclose in sharp CN204116209U " a kind of coating high-temp abrasion resistance tester ", the device is included knockout funnel and leaked with knockout
The pipeline that the outlet of bucket is connected, is provided with below pipe outlet for placing the specimen mounting of sample, the back side of specimen mounting
It is provided with for placing specimen mounting, the specimen mounting back side has been provided with heating system；Coating be which solves in hot environment
The test of anti-wear performance and evaluation problem.
The first assay device energy testing coating high temperature high voltage resistant corrosive nature；Second device can be tested pipeline coatings and exist
Extreme flexion performance under room temperature；The third analog is only capable of anti-wear performance of the testing coating under high temperature and room temperature.More than
Apparatus function is relatively simple, and in the case of can not simulating drilling rod stress, stretching, reverse or bend, drilling rod is internally coated
Resistant to chemical media corrosion and erosion corrosion performance.
Utility model content：
The purpose of this utility model is for the problems referred to above, there is provided a kind of dress of evaluation drilling rod undercoating corrosion resisting property
Put.
For reaching above-mentioned purpose, this utility model employs the following technical solutions to realize：
A kind of device for evaluating drilling rod undercoating corrosion resisting property, fills including the container with airtight cavity and stress loading
Put, the bottom of the container is provided with primary heater, circumferentially on be provided with some secondary heaters, be provided with the top cover of the container with
The air inlet pipe being connected in container and escape pipe, are provided with multi-stage motor agitator, multi-stage motor at the top cap central of the container
The multiple stirring vanes for being arranged on agitator from top to bottom are stretched in container；
Multiple sample installing ports are provided with the container, are provided with a stress loading dress at each sample installing port
Put, wherein stress loading device includes tensile stress charger, distorting stress charger and bending stress charger, work
When making, sample is fixed at corresponding sample installing port by stress loading device.
This utility model is further improved by, and is provided with the first valve in air inlet pipe, is provided with second on escape pipe
Valve.
This utility model is further improved by, and is additionally provided with pressure gauge, pH meter and thermometer on the top cover of the container,
It is respectively used to monitor pressure in container, pH value and temperature.
This utility model is further improved by, and each sample installing port includes the firm banking for cooperating and consolidates
Determine footstock.
This utility model is further improved by, and tensile stress charger includes stretching sample clamp, stretching fastening
Device and stretching dielectric pin, wherein, the two ends for stretching sample are installed on stretching by stretching clamp device and stretching dielectric pin
On sample clamp.
This utility model is further improved by, and distorting stress charger includes torsion sample fixture, reverses fastening
Device and positioning dielectric pin；Wherein, one end of torsion sample is positioned at torsion sample fixture by positioning dielectric pin, and the other end leads to
Cross torsion clamp device to be fixed on torsion sample fixture.
This utility model is further improved by, and also includes positioning swaging clamp and is opened in little on torsion sample fixture
Angle locating slot, is answered to the torsion that torsion sample applies to set by adjusting position of the positioning swaging clamp on low-angle locating slot
Power.
This utility model is further improved by, and bending stress charger includes bending sample clamp, some bendings
Dielectric pin, charger and insulation pressure head, wherein, the two ends for bending sample are movably connected in bending sample by bending dielectric pin
On fixture, charger is radially arranged along bending sample, and the pressure head that insulate is arranged on the external part of charger, is filled by loading
Put along bending sample and move radially, realize applying bending stress to bending sample.
Relative to prior art, due to adopting above technical scheme, which has advantages below to this utility model：
1st, this utility model is related to the device for evaluating drilling rod undercoating corrosion resisting property under chemistry-mechanics reciprocal action, can
To measure resistant to chemical media corrosive nature and punching of the drilling rod undercoating under the effect of different stretchings, bending or distorting stress simultaneously
Corrosion energy.
2nd, this utility model is related to the device for evaluating drilling rod undercoating corrosion resisting property under chemistry-mechanics reciprocal action, leads to
Temperature and pressure is overregulated, and is passed through H2S、CO2Deng corrosive gas, the drilling rod undercoating of various working difference well section can be simulated
A kind of Service Environment, it is achieved that device multiple use.
3rd, this utility model is arranged main thermostat and secondary thermostat, it is ensured that test reaches expected test temperature.Application
The device and the method that sets up on the device basic evaluate the internally coated antiseptic property of drilling rod, to applying in Oil Field drilling rod
The selection and biometry of layer is significant.
Description of the drawings：
Fig. 1 is a kind of overall structure diagram of the installation method for evaluating drilling rod undercoating corrosion resisting property of this utility model；
Top views of the Fig. 2 for sample installing port；
Fig. 3 is tensile stress charger schematic diagram；
Fig. 4 is distorting stress charger schematic diagram；Wherein, partial enlarged drawings of the Fig. 4 (b) for Fig. 4 (a)；
Fig. 5 is bending stress charger schematic diagram.
Drawing reference numeral explanation：
1st, primary heater, 2, secondary heater, 3, multi-stage motor agitator, 4, sample installing port, 5, thermometer, 6, pressure
Table, 7, pH meter, 8, air inlet pipe, 9, escape pipe, 10, mounting seat, 11, fixed footstock, 12, valve, 13, valve, 14, stretching should
Force loading device, 15, stretching sample clamp, 16, stretching clamp device, 17, stretching dielectric pin, 18, stretching sample, 19, reverse
Stress loading device, 20, torsion sample fixture, 21, reverse clamp device, 22, positioning dielectric pin, 23, torsion sample, 24, little
Angle locating slot, 25, positioning swaging clamp, 26, bending stress charger, 27, bending dielectric pin, 28, charger, 29, insulation
Pressure head, 30, bending sample.
Specific embodiment：
In order to be more clearly understood to technical characteristic of the present utility model, purpose and effect, in conjunction with description of the drawings
Specific embodiment of the present utility model.
Structure of the present utility model：
As depicted in figs. 1 and 2, the utility model proposes evaluation drilling rod undercoating corrosion resisting property device, including main plus
Hot device 1, secondary heater 2, multi-stage motor agitator 3, multiple sample installing ports 4, thermometer 5, pressure gauge 6, pH meter 7, air inlet pipe 8
With escape pipe 9.
As shown in figure 1, each sample installing port 5 includes a mounting seat 10 and a fixed footstock 11；In air inlet pipe 8
Valve 12 is installed, valve 13 is installed on escape pipe 9.Additionally, multi-stage motor agitator 3 is provided with Multi-stage stirring blade, really
Protect fluid and reach regulation flow velocity.
As shown in figure 3, tensile stress charger 14 includes stretching sample clamp 15, clamp device 16 and dielectric pin 17；
Stretching sample 18 is installed on stretching sample clamp.
As shown in figure 4, distorting stress charger 19 includes torsion sample fixture 20, clamp device 21 and positioning dielectric pin
22；Torsion sample 23 is installed on torsion sample fixture 20.Low-angle locating slot 24 and positioning swaging clamp is provided with the top of charger
25.
As shown in figure 5, bending stress charger 26 includes dielectric pin 27, charger 28；Charger 28 is using absolutely
Edge pressure head 29, to avoid galvanic corrosion；Bending sample 30 is fixed by dielectric pin 27.
Using the method for the device for evaluating drilling rod undercoating corrosion resisting property described in the utility model, comprise the following steps that：
The sample for processing is attached on corresponding stress loading device by test requirements document, installation test is required to sample
Apply stretching, reverse or bending stress.Then the charger that will be equipped with sample is attached to corresponding sample installing port；Addition is matched somebody with somebody
Deoxygenation process is carried out by test requirements document after the testing liquid that puts；Start heater, be warming up to predetermined temperature；According to test requirements document
It is passed through corrosive gas (H2S、CO2Deng), make-up gas make to reach predetermined pressure；According to test needs, start motor stirrer,
Fluid is made to reach predetermined flow rate.In process of the test, pressure gauge, pH meter and thermometer real-time monitoring test pressure, pH value can be passed through
And test temperature.After test, sample is taken out, observation simultaneously carries out performance test to coating.
Claims (8)
1. a kind of device for evaluating drilling rod undercoating corrosion resisting property, it is characterised in that include container with airtight cavity and should
Force loading device, the bottom of the container are provided with primary heater (1), are provided with some secondary heaters (2) in circumference, the container
The air inlet pipe (8) and escape pipe (9) being connected with container is provided with top cover, is provided with multistage at the top cap central of the container
Motor stirrer (3), the multiple stirring vanes for being arranged on multi-stage motor agitator (3) from top to bottom are stretched in container；
Multiple sample installing port (4) are provided with the container, and each sample installing port (4) place is provided with a stress loading dress
Put, wherein stress loading device includes that tensile stress charger (14), distorting stress charger (19) and bending stress add
Carry and put (26), during working condition, sample is fixed on corresponding sample installing port (4) place by stress loading device.
2. according to claim 1 a kind of evaluate drilling rod undercoating corrosion resisting property device, it is characterised in that air inlet pipe
(8) the first valve (12) is provided with, is provided with the second valve (13) on escape pipe (9).
3. according to claim 1 a kind of evaluate drilling rod undercoating corrosion resisting property device, it is characterised in that the container
Pressure gauge (6), pH meter (7) and thermometer (5) is additionally provided with top cover, is respectively used to monitor pressure in container, pH value and temperature
Degree.
4. according to claim 1 a kind of evaluate drilling rod undercoating corrosion resisting property device, it is characterised in that each sample
Installing port (4) includes the firm banking (10) for cooperating and fixed footstock (11).
5. according to claim 1 a kind of evaluate drilling rod undercoating corrosion resisting property device, it is characterised in that tensile stress
Charger (14) includes stretching sample clamp (15), stretching clamp device (16) and stretching dielectric pin (17), wherein, stretches sample
The two ends of product (18) are installed in stretching sample clamp (15) by stretching clamp device (16) and stretching dielectric pin (17).
6. according to claim 1 a kind of evaluate drilling rod undercoating corrosion resisting property device, it is characterised in that distorting stress
Charger (19) includes torsion sample fixture (20), reverses clamp device (21) and positioning dielectric pin (22)；Wherein, sample is reversed
One end of product (23) is positioned at torsion sample fixture (20) by positioning dielectric pin (22), and the other end is by reversing clamp device
(21) it is fixed on torsion sample fixture (20).
7. a kind of device for evaluating drilling rod undercoating corrosion resisting property according to claim 6, it is characterised in that it is fixed also to include
Position swaging clamp (25) and the low-angle locating slot (24) being opened on torsion sample fixture (20), by adjusting positioning swaging clamp (25)
The distorting stress that position on low-angle locating slot (24) applies to set to torsion sample (23).
8. according to claim 1 a kind of evaluate drilling rod undercoating corrosion resisting property device, it is characterised in that bending stress
Charger (26) includes bending sample clamp, some bending dielectric pins (27), charger (28) and insulation pressure head (29), its
In, the two ends for bending sample (30) are movably connected on bending sample clamp by bending dielectric pin (27), charger (28)
It is radially arranged along bending sample (30), the pressure head (29) that insulate is arranged on the external part of charger (28), by charger
(28) move radially along bending sample (30), realize applying bending stress to bending sample (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620885245.1U CN206020238U (en) | 2016-08-15 | 2016-08-15 | A kind of device for evaluating drilling rod undercoating corrosion resisting property |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620885245.1U CN206020238U (en) | 2016-08-15 | 2016-08-15 | A kind of device for evaluating drilling rod undercoating corrosion resisting property |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206020238U true CN206020238U (en) | 2017-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620885245.1U Active CN206020238U (en) | 2016-08-15 | 2016-08-15 | A kind of device for evaluating drilling rod undercoating corrosion resisting property |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108226019A (en) * | 2017-12-08 | 2018-06-29 | 江苏理文化工有限公司 | A kind of detection device of coating |
-
2016
- 2016-08-15 CN CN201620885245.1U patent/CN206020238U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108226019A (en) * | 2017-12-08 | 2018-06-29 | 江苏理文化工有限公司 | A kind of detection device of coating |
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