CN203838037U - Device for measuring down-well tubular column corrosion rate of fume - Google Patents
Device for measuring down-well tubular column corrosion rate of fume Download PDFInfo
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- CN203838037U CN203838037U CN201420228736.XU CN201420228736U CN203838037U CN 203838037 U CN203838037 U CN 203838037U CN 201420228736 U CN201420228736 U CN 201420228736U CN 203838037 U CN203838037 U CN 203838037U
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Abstract
The utility model relates to a device for measuring down-well tubular column corrosion rate of fume. The device comprises a gas source part, a gas mixing part and a reaction kettle for simulating a corrosion environment, wherein the gas source part comprises a nitrogen source, an oxygen source and a carbon dioxide source; the gas mixing part comprises a mixing pressurizing container; the reaction kettle for simulating the corrosion environment comprises a kettle body, an experiment rotation component which is arranged in the axial direction inside the kettle body, and a motor for driving the experiment rotation component; the experiment rotation component comprises a rotor and a hanging rack. The device can simulate real conditions of down-well tubular column corrosion in fume filling auxiliary thickened oil recovery, thus meeting the testing on the fume corrosion under different conditions.
Description
Technical field
The utility model relates to a kind of device of flue gas to down-hole string corrosion rate of measuring, and belongs to the technical field of oil-gas field development.
Technical background
The auxiliary thickened oil recovery of note flue gas is the effective measures that improve crude production rate and ultimate recovery factor.Viscous crude occupies larger ratio in World's Oil and Gas Resources, and heavy crude producing main method is steam flood and steam stimulation at present, SAGD etc., and in existing steam flooding process, the flue gas of injection boiler is directly discharged in atmosphere, but in fact flue gas can be for the displacement of reservoir oil.When the auxiliary thickened oil recovery of note flue gas, owing to containing CO in flue gas
2, O
2, SO
2deng corrosive gas, all can there is corrosion in various degree in Injection Well and producing well, the even down-hole casing perforation that can be corroded, cause huge economic loss, therefore, according to the auxiliary thickened oil recovery technology of flue gas, the influence factor of assay flue gas corrosion and the corrosion rate to down-hole string, for improving the auxiliary heavy oil development effect of flue gas, the corrosion of prediction down-hole string is significant.
Laboratory adopts (i) formula (JB/T 7901. Uniform Corrosion Method of Laboratory Immersion Test methods) to calculate flue gas corrosion speed conventionally:
In (i) formula: R-corrosion rate, mm/a; Sample mass before M-test, unit: g; M
1sample mass after-test, unit: g; The total area of S-sample, unit: cm
2; T-test period, unit: h; The density of D-material, unit: kg/m
3.
Adopt at present the device of weight-loss method research corrosion all comparatively simple, can not be for simulating the corrosivity of the auxiliary thickened oil recovery flue gas of note flue gas, inlet flue gas complicated component in the time of in the auxiliary thickened oil recovery of note flue gas, the N that contains 80%-85%
2, the CO of 10%-15%
2, the O of 4%-6%
2, also have SO
2, SO
3, HCl etc., consider the dissolution of gas, under laboratory condition, only according to Dalton's law (of partial pressures), can accurately simulation well under the one-tenth of multicomponent system be grouped into.
Therefore, now urgently develop a kind of apparatus and method that can be used in flue gas corrosion in the auxiliary thickened oil recovery of simulation note flue gas, true etching condition that can simulation well lower tubular column, meet the test of flue gas to down-hole string corrosion rate under different condition, to instruct the optimal design of the auxiliary thickened oil recovery technology of note flue gas.
Utility model content
For the deficiencies in the prior art, the utility model provides a kind of device of flue gas to down-hole string corrosion rate of measuring.
The technical solution of the utility model is as follows:
Measure the device of flue gas to down-hole string corrosion rate, comprise the reactor of source of the gas portion, gas mixing portion and corrosion simulation environment;
Described source of the gas portion comprises nitrogen source of the gas, oxygen source, carbon dioxide air source;
Described gas mixing portion comprises mixing pressurized container;
The experiment rotary part that the reactor of described corrosion simulation environment comprises kettle, axially arrange, drive the motor of described experiment rotary part in kettle, described experiment rotary part comprises rotor and film hangers, and described motor comprises rotational speed governor and magnetic drive device; At the top of described kettle, be provided with rubber gasket and ball valve; Described ball valve is vertically mounted on the top of kettle, on described ball valve, is packaged with rubber gasket; Design advantage is herein, after described kettle is vacuumized, opens ball valve, prevents air leak, and recycling micro sample adding appliance syringe needle enters kettle through rubber gasket, adds simulated flue gas composition, the moisture wherein comprising, SO in kettle
2etc. micro constitutent;
Described nitrogen source of the gas is connected with mixing pressurized container by the first gas admittance valve; Described oxygen source is connected with mixing pressurized container by the second gas admittance valve; Described carbon dioxide air source is connected with mixing pressurized container by the 3rd gas admittance valve;
The gas outlet of described mixing pressurized container is connected with the reactor air intake opening of described corrosion simulation environment;
On the pipeline between described mixing pressurized container and the reactor of corrosion simulation environment, be provided with vacuum pump and tensimeter; Described vacuum pump is connected with pipeline, and whole pipeline, with vacuum meter, for testing front extraction kettle, mixing the air in pressurized container and pipeline, is eliminated the impact of air on simulated flue gas composition simultaneously;
Between described tensimeter and the reactor of corrosion simulation environment, be provided with atmospheric valve, safety valve and vacuum meter;
In described kettle outer setting, there is electric heating cover;
Outer setting at rotor has cooling jacket; The magnetic drive device of described motor, by being really sealed in pressure environment for the parts that stir, has thoroughly solved the reliability of motive seal between shaft and reactor with this.The basic manufactured materials of magnetic drive device is ferromagnetic material (ferrous alloy, nickel-base alloy), but when high temperature, there will be magnet loss phenomenon, so be provided with cooling jacket in outside corresponding to rotor magnetisable material;
On the sidewall of described kettle, in kettle, be respectively arranged with temperature sensor; The temperature sensor arranging in the temperature sensor arranging on described kettle sidewall, kettle is connected with temperature measuring and controlling instrument respectively.
Preferred according to the utility model, the supercharging pressure relief opening of described mixing pressurized container is provided with supercharge pump, water tank, between described mixing pressurized container and supercharge pump, is provided with lower draining valve and electro connecting pressure gauge.Described electro connecting pressure gauge is connected with the water side of mixing pressurized container, guaranteed supercharge pump, the safe reliability while mixing the pressure charging system supercharging that pressurized container forms, flue gas within mixing pressurized container is fully compressed to the reactor of corrosion simulation environment, electro connecting pressure gauge can make supercharge pump power-off quit work, and has prevented from mixing the water side superpressure of pressurized container.
Preferred according to the utility model, described nitrogen source of the gas with on the pipeline mixing between pressurized container, be provided with in turn the first reduction valve, the first mass-flow gas meter and the first one way stop peturn valve;
Described oxygen source with on the pipeline mixing between pressurized container, be provided with in turn the second reduction valve, the second mass-flow gas meter and the second one way stop peturn valve;
Described carbon dioxide air source with on the pipeline mixing between pressurized container, be provided with in turn the 3rd reduction valve, the 3rd mass-flow gas meter and the 3rd one way stop peturn valve.
Of the present utility modelly be a little:
The utility model provides a kind of flue gas of measuring to the device of down-hole string corrosion rate and application thereof.The distribution that the utility model has the advantages that device mixes pressure charging system, and the one-tenth that can simulate accurately note flue gas down-hole multicomponent system is grouped into, and pressure, temperature also can reach the parameter of note flue gas, can also simulate the flox condition of note flue gas simultaneously.By the actual corrosion environment of simulation well lower tubular column, can measure the corrosion rate of flue gas to down-hole string under different condition.
Accompanying drawing explanation
Accompanying drawing 1 is that the utility model is measured the structural representation of flue gas to the device of down-hole string corrosion rate;
In Fig. 1,
1, nitrogen source of the gas; 2, the first reduction valve; 3, the first mass-flow gas meter; 4, the first gas admittance valve; 5, the first one way stop peturn valve;
6, oxygen source; 7, the second reduction valve; 8, the second mass-flow gas meter; 9, the second gas admittance valve; 10, the second one way stop peturn valve;
11, carbon dioxide air source; 12, the 3rd reduction valve; 13, the 3rd mass-flow gas meter; 14, the 3rd gas admittance valve; 15, the 3rd one way stop peturn valve;
16, mix pressurized container; 17, supercharge pump; 18, electro connecting pressure gauge; 19, lower draining valve; 20, water tank;
21, vacuum pump; 22, mixing the valve on pipeline between pressurized container and the reactor of corrosion simulation environment; 23, tensimeter; 24, atmospheric valve; 25, safety valve; 26, vacuum meter; 27, the valve on pipeline between described vacuum meter and the reactor of corrosion simulation environment; 28, the valve of vacuum pump end; 29, the temperature sensor arranging on kettle sidewall; 30, the temperature sensor arranging in kettle; 31, temperature measuring and controlling instrument; 32, motor; 33, rotational speed governor; 34, magnetic drive device; 35, cooling jacket; 36, rubber gasket; 37, ball valve; 38, rotor; 39, film hangers; 40, the reactor of corrosion simulation environment; 41, electric heating cover.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail, but is not limited to this.
As shown in Figure 1.
Embodiment 1,
Measure the device of flue gas to down-hole string corrosion rate, comprise the reactor 40 of source of the gas portion, gas mixing portion and corrosion simulation environment;
Described source of the gas portion comprises nitrogen source of the gas 1, oxygen source 6, carbon dioxide air source 11;
Described gas mixing portion comprises mixes pressurized container 16;
The experiment rotary part that the reactor 40 of described corrosion simulation environment comprises kettle, axially arrange, drive the motor 32 of described experiment rotary part in kettle, described experiment rotary part comprises rotor 38 and film hangers 39, and described motor 32 comprises rotational speed governor 33 and magnetic drive device 34; At the top of described kettle, be provided with rubber gasket and ball valve; Described ball valve is vertically mounted on the top of kettle, on described ball valve, is packaged with rubber gasket;
Described nitrogen source of the gas 1 is connected with mixing pressurized container 16 by the first gas admittance valve 4; Described oxygen source 6 is connected with mixing pressurized container 16 by the second gas admittance valve 9; Described carbon dioxide air source 11 is connected with mixing pressurized container 16 by the 3rd gas admittance valve 14;
The gas outlet of described mixing pressurized container 16 is connected with reactor 40 air intake openings of described corrosion simulation environment;
On the pipeline between described mixing pressurized container 16 and the reactor 40 of corrosion simulation environment, be provided with vacuum pump 21 and tensimeter 23;
Between described tensimeter 23 and the reactor 40 of corrosion simulation environment, be provided with atmospheric valve 24, safety valve 25 and vacuum meter 26;
In described kettle outer setting, there is electric heating cover 41;
Outer setting at rotor 38 has cooling jacket 35;
On the sidewall of described kettle, be provided with and in temperature sensor 29, kettle, be provided with temperature sensor 30; The temperature sensor arranging in the temperature sensor arranging on described kettle sidewall, kettle is connected with temperature measuring and controlling instrument 31 respectively.
The supercharging pressure relief opening of described mixing pressurized container 16 is provided with supercharge pump 17, water tank 20, is provided with lower draining valve 19 and electro connecting pressure gauge 18 between described mixing pressurized container 16 and supercharge pump 17.
Embodiment 2,
A kind of device of flue gas to down-hole string corrosion rate of measuring as described in Example 1, its difference is, described nitrogen source of the gas 1 with on the pipeline mixing between pressurized container 16, be provided with in turn the first reduction valve 2, the first mass-flow gas meter 3 and the first one way stop peturn valve 5;
Described oxygen source 6 with on the pipeline mixing between pressurized container 16, be provided with in turn the second reduction valve 7, the second mass-flow gas meter 8 and the second one way stop peturn valve 10;
Described carbon dioxide air source 11 with on the pipeline mixing between pressurized container 16, be provided with in turn the 3rd reduction valve 12, the 3rd mass-flow gas meter 13 and the 3rd one way stop peturn valve 15.
As described in embodiment 1,2, measure the method for work of flue gas to the device of down-hole string corrosion rate, comprise that step is as follows:
(1) reference standard JB/T7901. Uniform Corrosion Method of Laboratory Immersion Test method, is processed into the down-hole string of experiment to be measured the sample to be tested that meets above-mentioned standard, and to sample to be tested punching, measures the front mass M of test of described sample to be tested; Sample to be tested is fixed on film hangers;
(2) film hangers is arranged on described rotor, then the reactor sealing to corrosion simulation environment;
(3) valve on pipeline between the reactor mixing valve, described vacuum meter and the corrosion simulation environment on pipeline between pressurized container and the reactor of corrosion simulation environment and the valve of vacuum pump end are opened respectively;
Open vacuum pump described mixing pressurized container and kettle are vacuumized, close vacuum pump and the valve on pipeline between the reactor that mixes valve, described vacuum meter and the corrosion simulation environment on pipeline between pressurized container and the reactor of corrosion simulation environment and the valve of vacuum pump end;
(4) open ball valve, by micro sample adding appliance minute hand head, pass caulking gum sheet successively, add water and the SO of simulated flue gas composition
2gas, closes ball valve after completing;
(5) the difference addition of default nitrogen, oxygen and carbon dioxide and mixing general pressure, nitrogen source of the gas, oxygen source and carbon dioxide air source are entered respectively to mixing pressurized container, above-mentioned three road gas air inlets simultaneously, when the addition of nitrogen, oxygen and carbon dioxide reaches default value, close the first gas admittance valve, the second gas admittance valve and the 3rd gas admittance valve; Then utilize the pressure in supercharge pump adjustment mixing pressurized container, so that its pressure reaches default mixing general pressure;
(6) close lower draining valve, open and mixing the valve on pipeline between pressurized container and the reactor of corrosion simulation environment, start and mix supercharge pump, the combination gas displacement mixing in pressurized container is entered in kettle, complete distribution; After supercharge pump stops, being closed in and mixing the valve on pipeline between pressurized container and the reactor of corrosion simulation environment, open and mix draining valve under pressurized container;
(7), if in step (5), the air inlet of described nitrogen, oxygen, carbon dioxide does not reach default difference addition and mixes general pressure, repeating step (5), (6);
(8) after distribution completes, start the electric heating cover of kettle outside, kettle is heated, by temperature measuring and controlling instrument, temperature in kettle being set is experimental temperature;
(9) by rotational speed governor, motor speed is set, by rotating speed, converts linear velocity corresponding to sample to be tested place radius to, be i.e. the flowing velocity of medium in simulation well lower tubular column; Open the cooling jacket outside rotor simultaneously;
(10) temperature in described kettle be elevated to experimental temperature and stable after, when pressure gauge reading is 12MPa, carry out cycle corrosion test;
(11) after corrosion test finishes, open atmospheric valve, by kettle emptying, when temperature is reduced to below 100 ℃ in kettle, take out sample to be tested, the removing of reference standard GB/T 16545-1996. corrosion product, remove the corrosion product on sample to be tested surface, measure the mass M of sample to be tested
1, according to (i) formula, calculate corrosion rate:
In (i) formula: R-corrosion rate, mm/a; Sample to be tested quality before M-corrosion test, unit: g; M
1sample to be tested quality after-corrosion test, unit: g; The total surface area of S-sample to be tested, unit: cm
2; The T-corrosion test time, unit: h; The density of material of D-sample to be tested, unit: kg/m
3.
Suppose that the down-hole string corrosion canonical parameter in the auxiliary thickened oil recovery of note flue gas is: 120 ℃ of temperature, pressure 12MPa, flow velocity 3m/s.If inject the composition of flue gas: N
2-80%, CO
2-15%, O
2-5%, water cut 1%, SO
2-50ppm.
The reactor volume size of corrosion simulation environment is 2L, according to corrosion parameter and smoke components, utilizes Dalton's law (of partial pressures) and the Ideal-Gas Equation, calculates the addition under each ingredient standard situation: N
2-132.8L (under the status of criterion), CO
2-33.8L (under the status of criterion), O
2-8.4L (under the status of criterion), H
2o-133mL, SO
2-8.3mL.
As described in method of work, in described step (4), add water 133mL, the SO of simulated flue gas composition
2gas 8.3mL.
The addition of described step (5) default nitrogen, oxygen and carbon dioxide is respectively N
2: 132.8L, CO
2: 33.8L, O
2: 8.4L.
Experimental temperature in described step (8) is 120 ℃.
Described step (9) arranges motor speed 300r/min by rotational speed governor.By rotating speed, convert sample place linear velocity corresponding to radius to and be about 3m/s, get final product the flowing velocity 3m/s of indirect analog medium.
Described three tunnel gas handling systems, are all connected with mixing pressurized container, according to N in flue gas
2, CO
2and O
2the difference of content, N
2the mass flowmeter 3 flow specifications of road air inlet are 5SLM, CO
2the mass flowmeter 8 flow specifications of road air inlet are 1SLM, O
2the mass flowmeter 13 flow specifications of road air inlet are 200SCCM.Wherein SLM (Standard Liter per Minute) means per minute standard liter; SCCM (Standard Cubic Centimeter per Minute) means per minute standard milliliter.
Claims (3)
1. measure the device of flue gas to down-hole string corrosion rate, it is characterized in that, this device comprises the reactor of source of the gas portion, gas mixing portion and corrosion simulation environment;
Described source of the gas portion comprises nitrogen source of the gas, oxygen source, carbon dioxide air source;
Described gas mixing portion comprises mixing pressurized container;
The experiment rotary part that the reactor of described corrosion simulation environment comprises kettle, axially arrange, drive the motor of described experiment rotary part in kettle, described experiment rotary part comprises rotor and film hangers, and described motor comprises rotational speed governor and magnetic drive device; At the top of described kettle, be provided with rubber gasket and ball valve; Described ball valve is vertically mounted on the top of kettle, on described ball valve, is packaged with rubber gasket;
Described nitrogen source of the gas is connected with mixing pressurized container by the first gas admittance valve; Described oxygen source is connected with mixing pressurized container by the second gas admittance valve; Described carbon dioxide air source is connected with mixing pressurized container by the 3rd gas admittance valve;
The gas outlet of described mixing pressurized container is connected with the reactor air intake opening of described corrosion simulation environment;
On the pipeline between described mixing pressurized container and the reactor of corrosion simulation environment, be provided with vacuum pump and tensimeter;
Between described tensimeter and the reactor of corrosion simulation environment, be provided with atmospheric valve, safety valve and vacuum meter;
In described kettle outer setting, there is electric heating cover;
Outer setting at rotor has cooling jacket;
On the sidewall of described kettle, in kettle, be respectively arranged with temperature sensor; The temperature sensor arranging in the temperature sensor arranging on described kettle sidewall, kettle is connected with temperature measuring and controlling instrument respectively.
2. a kind of device of flue gas to down-hole string corrosion rate of measuring according to claim 1, it is characterized in that, the supercharging pressure relief opening of described mixing pressurized container is provided with supercharge pump, water tank, between described mixing pressurized container and supercharge pump, is provided with lower draining valve and electro connecting pressure gauge.
3. a kind of device of flue gas to down-hole string corrosion rate of measuring according to claim 1, it is characterized in that, described nitrogen source of the gas with on the pipeline mixing between pressurized container, be provided with in turn the first reduction valve, the first mass-flow gas meter and the first one way stop peturn valve;
Described oxygen source with on the pipeline mixing between pressurized container, be provided with in turn the second reduction valve, the second mass-flow gas meter and the second one way stop peturn valve;
Described carbon dioxide air source with on the pipeline mixing between pressurized container, be provided with in turn the 3rd reduction valve, the 3rd mass-flow gas meter and the 3rd one way stop peturn valve.
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|---|---|---|---|
| CN201420228736.XU CN203838037U (en) | 2014-05-06 | 2014-05-06 | Device for measuring down-well tubular column corrosion rate of fume |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420228736.XU CN203838037U (en) | 2014-05-06 | 2014-05-06 | Device for measuring down-well tubular column corrosion rate of fume |
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|---|---|
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104034649A (en) * | 2014-05-06 | 2014-09-10 | 中国石油大学(华东) | Apparatus for measuring corrosion rate of down-hole string by flue gas, and its application |
| CN104359827A (en) * | 2014-11-27 | 2015-02-18 | 上海化工研究院 | Environment testing box for simulating seriously-polluted atmosphere |
| CN106053289A (en) * | 2016-07-18 | 2016-10-26 | 河南理工大学 | Measurement device for adsorption and desorption of multi-element gas |
| CN106568703A (en) * | 2016-10-28 | 2017-04-19 | 中国石油天然气集团公司 | Underground storage cavern wellbore string corrosion experimental device and experimental method |
| CN108698074A (en) * | 2016-02-22 | 2018-10-23 | 武藏工业株式会社 | Has the discharging liquid material device of boost-up circuit |
| CN106053289B (en) * | 2016-07-18 | 2019-07-16 | 河南理工大学 | A kind of multicomponent gas adsorption-desorption measurement device |
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2014
- 2014-05-06 CN CN201420228736.XU patent/CN203838037U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104034649A (en) * | 2014-05-06 | 2014-09-10 | 中国石油大学(华东) | Apparatus for measuring corrosion rate of down-hole string by flue gas, and its application |
| CN104359827A (en) * | 2014-11-27 | 2015-02-18 | 上海化工研究院 | Environment testing box for simulating seriously-polluted atmosphere |
| CN104359827B (en) * | 2014-11-27 | 2017-04-05 | 上海化工研究院 | A kind of environmental test chamber of simulation severe contamination air |
| CN108698074A (en) * | 2016-02-22 | 2018-10-23 | 武藏工业株式会社 | Has the discharging liquid material device of boost-up circuit |
| CN108698074B (en) * | 2016-02-22 | 2021-03-05 | 武藏工业株式会社 | Liquid material discharge device with pressurizing circuit |
| CN106053289A (en) * | 2016-07-18 | 2016-10-26 | 河南理工大学 | Measurement device for adsorption and desorption of multi-element gas |
| CN106053289B (en) * | 2016-07-18 | 2019-07-16 | 河南理工大学 | A kind of multicomponent gas adsorption-desorption measurement device |
| CN106568703A (en) * | 2016-10-28 | 2017-04-19 | 中国石油天然气集团公司 | Underground storage cavern wellbore string corrosion experimental device and experimental method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140917 Termination date: 20160506 |