CN104155405B - A kind of method and device measuring carbon dioxide-local water effect production precipitation capacity - Google Patents
A kind of method and device measuring carbon dioxide-local water effect production precipitation capacity Download PDFInfo
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- CN104155405B CN104155405B CN201410394830.7A CN201410394830A CN104155405B CN 104155405 B CN104155405 B CN 104155405B CN 201410394830 A CN201410394830 A CN 201410394830A CN 104155405 B CN104155405 B CN 104155405B
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Abstract
The invention provides a kind of method and the device that measure carbon dioxide-local water effect production precipitation capacity.The method comprises: in autoclave, pour local water into, obtains the sample solution under design temperature, different pressures by adjustment pressure; Then adjust temperature and obtain the sample solution under set pressure, different temperatures; With the sample solution that hydrochloric acid solution titration is taken out at every turn, detecting the ion concentration of sample solution and initial local water, by calculating the ion concentration variable quantity under different temperatures, pressure condition, then calculating sedimentary quality.Present invention also offers a kind of device that can be used for said method.Employing said method and device can determine the precipitation capacity in each temperature and pressure change procedure, set up temperature, the quantitative relationship of pressure change on the impact of reservoir properties.
Description
Technical field
The present invention relates to a kind of mensuration CO
2the method of-local water effect production precipitation capacity and device, belong to technical field of petroleum extraction.
Background technology
CO
2driving is a kind of method of very effective raising oil recovery factor, and it not only effectively can improve oil recovery factor significantly can also reduce greenhouse gas emissions; CO
2drive in process, CO
2caCO can be produced with highly mineralized formation brines effect
3etc. precipitation, thus change reservoir properties (as permeability, pore texture etc.) affects CO
2the oil recovery factor driven.Measure CO
2drive CO in process
2the precipitation capacity caused with local water effect studies key.Current CO
2drive experimental study and numerical simulation study seldom considers CO
2caCO can be produced with highly mineralized formation brines effect
3deng the impact precipitated reservoir properties and recovery ratio, lack CO
2drive CO in process
2the Quantitative experimental study of the precipitation capacity caused with local water effect.
CO
2be dissolved in local water and generate carbonic acid such as formula shown in (1.1):
CO
2+H
2O→H
2CO
3(1.1)
Carbonic acid is weak acid, point two-stage ionization.
First stage ionization:
H
2cO
3→ H
++ HCO
3 -(1.2) (for carbonic acid ionization principal mode)
Secondary ionization:
HCO
3 -→ H
++ CO
3 2-(1.3) (Ionization Chamber is very little, and degree of ionization is only 10 of first stage ionization
-3), CO
2main with HCO in water
3 -and H
2cO
3form exists.
When pressure rising, temperature reduce, CO
2solubleness in water increases, CO
2be dissolved in local water, reaction equation CO
2+ H
2o → H
2cO
3(1.1), right direction moves, H
2cO
3increase, thus make reaction equation H
2cO
3→ H
++ HCO
3 -(1.2), right direction moves, H
+increase, thus make reaction equation HCO
3 -→ H
++ CO
3 2-(1.3), left direction moves, and suppresses CO
3 2-generation.
Therefore CO
2after being dissolved in local water, CO
2main with HCO in water
3 -and H
2cO
3form exists, with Ca
2+generate Ca (HCO
3)
2.
When pressure reduction, temperature raise, CO
2solubleness in water reduces, CO
2overflow from water, reaction equation CO
2+ H
2o → H
2cO
3(1.1), left direction moves, H
2cO
3reduce, thus make reaction equation H
2cO
3→ H
++ HCO
3 -(1.2), left direction moves, H
+reduce, thus make reaction equation HCO
3 -→ H
++ CO
3 2-(1.3), right direction moves, and generates CO
3 2-, CO
3 2-with the Ca in stratum
2+generate CaCO
3precipitation.
CaCl
2caCl in type local water
2content is higher, wherein Ca
2+likely with CO
3 2-reaction can form insolubles precipitate C aCO
3, make formation scaling, have influence on the permeability of reservoir pore space.
At CO
2inject and stratum displacement process, CO
2react with water and form H
2cO
3, solution is acid, CO in acid condition
2main with HCO in water
3 -and H
2cO
3form exists, and HCO
3 -with Ca
2+, Mg
2+in conjunction with formed Ca (HCO
3)
2with Mg (HCO
3)
2water-soluble, therefore, can not CaCO be formed
3and MgCO
3dirt and block reservoir pore space.
Work as CO
2when dividing potential drop in the solution reduces, reaction is carried out to the left, and rate of pressure reduction makes the Ca (HCO being originally in dissolved state in solution slowly
3)
2be decomposed to form CaCO
3dirt.
Also there is a kind of method of testing in prior art, it is the appearance pattern utilizing scanning electron microscopic observation rock to cut into slices, and in autoclave, put into local water and rock section, off-response still, then injects CO
2, under the temperature and pressure of setting, keep 24h, then take out rock section, the section of recycling scanning electron microscopic observation rock, before and after contrast reaction, the change of rock section appearance pattern judges whether to there occurs precipitation.The method can only observe out whether there occurs precipitation qualitatively, can not draw the explicit value of precipitation capacity.In addition, the method can only observe the precipitation status of rock section when pressure is reduced to atmospheric pressure, can not observe the low to high precipitation status when atmospheric pressure (as 5MPa) of Pressure Drop.
Also there is a kind of method of testing in prior art, it is in autoclave, put into local water and rock section, then injects CO
2, under the temperature and pressure of setting, keep 24h, agitating solution, then take out 10mL, utilize Filter paper filtering solution, dry filter paper, measuring tape has the weight of the filter paper of precipitation, deducts the quality of original filter paper, draws the quality of precipitation.The method can only measure precipitation capacity when being reduced to atmospheric pressure, can not record pressure and reduce higher than precipitation capacity time one atmospheric pressure (as 5MPa).
Summary of the invention
For solving the problems of the technologies described above, the object of the present invention is to provide a kind of mensuration CO
2the method of-local water effect production precipitation capacity, the precipitation capacity under adopting the method can test out different temperatures, pressure condition easily.
The present invention also aims to provide a kind of mensuration CO that can be used for said method
2the device of-local water effect production precipitation capacity.
For achieving the above object, the present invention provide firstly a kind of mensuration CO
2the method of-local water effect production precipitation capacity, it comprises the following steps:
In autoclave, pour local water into, close good autoclave, temperature is elevated to design temperature, according to CO
2solubleness under design temperature, the first predetermined boost pressure value, injects enough CO
2, make pressure be increased to the first predetermined boost pressure value, keep more than 24h, take out appropriate solution at the middle part of autoclave;
Again pressure is elevated to the second predetermined boost pressure value, and keeps more than 24h, and then take out appropriate solution from the middle part of autoclave;
Successively pressure is elevated to each predetermined boost pressure value, carries out the operation keeping more than 24h and take out appropriate solution at the middle part of autoclave respectively;
And then be depressured to each predetermined step-down force value successively and carry out respectively keeping more than 24h and taking out the operation of appropriate solution at the middle part of autoclave;
Afterwards, in autoclave, pour local water into, close good autoclave, according to CO
2solubleness under set pressure, the first predetermined warming temperature value, injects enough CO
2, pressure is elevated to set pressure, and the temperature of autoclave is increased to the first predetermined warming temperature value, keep more than 24h, take out appropriate solution at the middle part of autoclave;
Again temperature is elevated to the second predetermined warming temperature value, and keeps more than 24h, and then take out appropriate solution from the middle part of autoclave;
Successively temperature is elevated to each predetermined warming temperature value, carries out the operation keeping more than 24h and take out appropriate solution at the middle part of autoclave respectively;
And then cool to each predetermined cooling temperature value successively and the operation carried out maintenance more than 24h respectively and take out appropriate solution at the middle part of autoclave;
With the sample solution that hydrochloric acid solution titration is taken out at every turn, then ion chromatograph is utilized to detect each sample solution of taking-up and the ion concentration of initial local water, the ion concentration of initial local water is utilized to deduct each ion concentration of taking out liquid, obtain the ion concentration variable quantity under different temperatures, pressure condition, then calculate sedimentary quality according to sedimentary Molecular weights.
In the above-mentioned methods, predetermined boost pressure value in boost process and pressure reduction, predetermined step-down force value carry out selecting as required, the form of arithmetic progression can be adopted, such as boost process controls as 5MPa, 10MPa, 15MPa, 20MPa, 25MPa, and pressure reduction controls as 20MPa, 15MPa, 10MPa, 5MPa, 0.1MPa etc.Meanwhile, relevant design temperature also can be selected as required.In boosting, pressure reduction, boost at every turn or after step-down, all carry out the operation keeping more than 24h and take out appropriate solution (detection of ion chromatograph can be met) at the middle part of reactor, to obtain corresponding sample solution.Preferably, the volume of the solution taken out at the middle part of reactor is 10mL.
In the above-mentioned methods, predetermined warming temperature value in temperature-rise period and temperature-fall period, predetermined cooling temperature value carry out selecting as required, the form of arithmetic progression can be adopted, such as temperature-rise period controls is 20 DEG C, 30 DEG C, 40 DEG C, 50 DEG C, 60 DEG C, 70 DEG C, 80 DEG C, 90 DEG C, 100 DEG C, and temperature-fall period controls to be 90 DEG C, 80 DEG C, 70 DEG C, 60 DEG C, 50 DEG C, 40 DEG C, 30 DEG C, 20 DEG C etc.Meanwhile, relevant set pressure also can be selected as required.In heating, cooling process, heat up at every turn or after cooling, all carry out the operation keeping more than 24h and take out appropriate solution (detection of ion chromatograph can be met) at the middle part of reactor, to obtain corresponding sample solution.
In the above-mentioned methods, preferably, the step of the relation curve set up between design temperature, pressure, sedimentary quality is also comprised.
In the above-mentioned methods, preferably, the ion concentration utilizing ion chromatograph to detect sample solution and the initial local water at every turn taken out is mainly Ca
2+concentration.
In the above-mentioned methods, the local water added in autoclave can meet test needs, and stays certain space to be used for injecting CO
2, preferably, the addition of described local water is that 200mL is to 2/3 of described autoclave volume.It is just passable that the volume of above-mentioned autoclave is greater than 500mL, and volume ranges preferably from 500-2000mL.
According to specific embodiment of the invention scheme, preferably, said method can comprise following concrete steps:
In autoclave, pour local water into, close good autoclave, temperature is elevated to design temperature, according to CO
2in autoclave, pour local water into, close good autoclave, temperature is elevated to design temperature, according to CO
2solubleness under design temperature, 5MPa, injects enough CO
2, make pressure be increased to 5MPa, keep 24h, take out 10mL solution at the middle part of autoclave;
Again pressure is elevated to 10MPa, and keeps 24h, then take out 10mL solution from the middle part of autoclave;
Successively pressure is elevated to 15MPa, 20MPa, 25MPa, carries out the operation keeping 24h and take out 10mL solution at the middle part of autoclave respectively;
And then be depressured to 20MPa, 15MPa, 10MPa, 5MPa, 0.1MPa successively and carry out respectively keeping 24h and the operation at the middle part of autoclave taking-up 10mL solution;
Afterwards, in autoclave, pour local water into, close good autoclave, pressure is elevated to set pressure, according to CO
2in set pressure, solubleness at 20 DEG C, inject enough CO
2, make pressure be increased to 20 DEG C, keep 24h, take out 10mL solution at the middle part of autoclave;
Again pressure is elevated to 30 DEG C, and keeps 24h, then take out 10mL solution from the middle part of autoclave;
Successively pressure is elevated to 40 DEG C, 50 DEG C, 60 DEG C, 70 DEG C, 80 DEG C, 90 DEG C, 100 DEG C, carries out the operation keeping 24h and take out 10mL solution at the middle part of autoclave respectively;
And then be depressured to 90 DEG C, 80 DEG C, 70 DEG C, 60 DEG C, 50 DEG C, 40 DEG C, 30 DEG C, 20 DEG C successively and carry out respectively keeping 24h and the operation at the middle part of autoclave taking-up 10mL solution;
With the sample solution that hydrochloric acid solution titration is taken out at every turn, then ion chromatograph is utilized to detect each sample solution of taking-up and the ion concentration of initial local water, the ion concentration of initial local water is utilized to deduct each ion concentration of taking out liquid, obtain the ion concentration variable quantity under different temperatures, pressure condition, then calculate sedimentary quality according to sedimentary Molecular weights;
Set up the relation curve between design temperature, pressure, sedimentary quality.
In the above-mentioned methods, the concentration of the hydrochloric acid solution adopted does not have special impact, and enough, preferably, the concentration of described hydrochloric acid solution is about 10wt% to total amount.
At CO
2in displacement process, CO
2be dissolved in the local water of high salinity, when the condition such as temperature, pressure changes, CaCO occur
3etc. precipitation, reservoir properties and recovery ratio are impacted, the precipitation capacity under adopting said method provided by the invention can measure different temperatures, pressure condition easily, for the change of quantitative examination temperature and pressure is offered help on the impact of precipitation capacity.
Present invention also offers a kind of for measuring CO
2the device of-local water effect production precipitation capacity, it comprises back pressure impact damper, tensimeter, check valve, test tube, autoclave, backpressure pump, wherein:
Described back pressure impact damper is connected with described check valve, and the connecting line of the two is provided with tensimeter;
Described check valve is also connected with the top entry of described test tube and autoclave respectively;
The top of described autoclave is provided with an evacuation port, and the outlet at bottom of described autoclave is communicated with described backpressure pump.
In said apparatus, autoclave is used for providing high-temperature high-voltage reaction space, can temperature-pressure, maintains certain temperature and pressure, is the main place of reaction.The temperature range of autoclave can be room temperature to 180 DEG C, and pressure limit can be 0-70MPa.
Check valve, back pressure impact damper, backpressure pump and tensimeter form a back pressure control system, and pressure when making to get liquid in reactor is not less than the pressure of setting.When the pressure in reactor can stop fluid automatically lower than during set pressure, the pressure only in reactor is higher than ability fluid during set pressure.Check valve is gauge tap parts.Back pressure impact damper is for keeping pressure stability.Backpressure pump is used to provide pressure, and pressure observed by tensimeter.Test tube is used for taking out solution from the middle part of autoclave and liquid measure is got in measurement.
Adopt said method provided by the invention and device can determine precipitation capacity in each temperature and pressure change procedure, set up temperature, the quantitative relationship of pressure change on the impact of reservoir properties, thus at CO
2add temperature, the quantitative effect of pressure change to reservoir properties in oil displacement process, make CO
2parameter optimization research in oil displacement process is more accurate.
Accompanying drawing explanation
Fig. 1 be embodiment 1 for measuring CO
2the structural representation of the device of-local water effect production precipitation capacity.
Fig. 2 is CaCO
3precipitation capacity raises with pressure and reduces variation diagram.
Fig. 3 is CaCO
3precipitation capacity raises with temperature and reduces variation diagram.
Main Reference label declaration:
Back pressure impact damper 1 tensimeter 2 check valve 3 test tube 4 autoclave 5 backpressure pump 6
Embodiment
In order to there be understanding clearly to technical characteristic of the present invention, object and beneficial effect, existing following detailed description is carried out to technical scheme of the present invention, but can not be interpreted as to of the present invention can the restriction of practical range.
Embodiment 1
Present embodiments provide a kind of for measuring CO
2the device of-local water effect production precipitation capacity, as shown in Figure 1, this device comprises back pressure impact damper 1, tensimeter 2, check valve 3, test tube 4, autoclave 5, backpressure pump 6 to its structure, wherein:
Back pressure impact damper 1 is connected with check valve 3, and the connecting line of the two is provided with tensimeter 2;
Check valve 3 is also connected with the top entry of test tube 4 and autoclave 5 respectively;
The top of autoclave 5 is provided with an evacuation port, and the outlet at bottom of autoclave 5 is communicated with backpressure pump 6;
Further, corresponding valve is also respectively equipped with in the appropriate location of this device.
Embodiment 2
Present embodiments provide a kind of for measuring CO
2the method of-local water effect production precipitation capacity, its device that embodiment 1 can be adopted to provide carries out, and the method comprises the following steps:
CaCl is poured in autoclave
2type local water (please design parameter as shown in table 1) 1L, closes good reactor, temperature is elevated to 30 DEG C, and injecting 500mL pressure is the CO of 5MPa
2, to make pressure reach 5MPa, keep 24h, take out 10mL solution at the middle part of reactor;
Again pressure is elevated to 10MPa, and maintains pressure, keep 24h, and then take out the solution of 10mL from the middle part of reactor; Successively pressure is elevated to 15MPa, 20MPa, repeats the operation keeping 24h and take out 10mL solution from the middle part of reactor;
And then be depressured to 15MPa, 10MPa, 5MPa, 0.1MPa successively and sample;
Afterwards, in autoclave, CaCl is poured into
2type local water 1L, closes good reactor, injects CO
2, make pressure be elevated to 10MPa, meanwhile, temperature be elevated to 20 DEG C, keep 24h, take out 10mL solution at the middle part of reactor;
Again temperature is elevated to 30 DEG C, 40 DEG C, 50 DEG C, 60 DEG C, 70 DEG C, 80 DEG C, 90 DEG C, 100 DEG C successively, repeats the operation keeping 24h and take out 10mL solution from the middle part of reactor;
And then cool to 90 DEG C, 80 DEG C, 70 DEG C, 60 DEG C, 50 DEG C, 40 DEG C, 30 DEG C, 20 DEG C successively and sample;
With each sample solution of hydrochloric acid solution titration, ion chromatograph is then utilized to survey each liquid of taking-up and the Ca of initial local water
2+concentration, utilizes the Ca of initial local water
2+concentration deducts each Ca taking out liquid
2+concentration, obtains Ca under different temperatures, pressure condition
2+variable quantity (the different pressures sub-surface water Ca of concentration
2+concentration and CaCO
3precipitation capacity is as shown in table 2, local water Ca in temperature-rise period
2+concentration and CaCO
3precipitation capacity is as shown in table 3, local water Ca in temperature-fall period
2+concentration and CaCO
3precipitation capacity is as shown in table 4), then calculate CaCO according to sedimentary Molecular weights
3quality;
Set up temperature, pressure and CaCO
3the relation curve of precipitation capacity (quality), wherein, CaCO
3precipitation capacity raises with pressure and reduces variation diagram as shown in Figure 2, CaCO
3precipitation capacity raises with temperature and reduces variation diagram as shown in Figure 3.
The correlation parameter of table 1 local water
Table 2 different pressures sub-surface water Ca
2+concentration and CaCO
3precipitation capacity
| Pressure (MPa) | 5 | 10 | 15 | 20 | 15 | 10 | 5 | 0.1 |
| Ca 2+Concentration (mg/L) | 19880 | 19880 | 19880 | 19880 | 19878 | 19877 | 19869 | 19817 |
| CaCO 3Precipitation capacity (mg/L) | 0 | 0 | 0 | 0 | 3.7 | 7.4 | 25.0 | 157.1 |
Local water Ca in table 3 temperature-rise period
2+concentration and CaCO
3precipitation capacity
| Temperature (DEG C) | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 |
| Ca 2+Concentration (mg/L) | 19880 | 19877 | 19874 | 19871 | 19869 | 19866 | 19863 | 19861 | 19860 |
| CaCO 3Precipitation capacity (mg/L) | 0.00 | 8.02 | 15.79 | 22.53 | 27.93 | 34.64 | 42.71 | 48.42 | 50.00 |
Local water Ca in table 4 temperature-fall period
2+concentration and CaCO
3precipitation capacity
| Temperature (DEG C) | 100 | 90 | 80 | 70 | 60 | 50 | 40 | 30 | 20 |
| Ca 2+Concentration (mg/L) | 19880 | 19880 | 19880 | 19880 | 19880 | 19880 | 19880 | 19880 | 19880 |
| CaCO 3Precipitation capacity (mg/L) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Curve given by Fig. 2 and Fig. 3, just can at CO
2oil displacement process determines the quantitative effect of different temperature, pressure change to reservoir properties, thus helps to determine CO
2various parameters in oil displacement process.
Claims (9)
1. measure a method for carbon dioxide-local water effect production precipitation capacity, it comprises the following steps:
In autoclave, pour local water into, close good autoclave, temperature is elevated to design temperature, according to CO
2solubleness under design temperature, the first predetermined boost pressure value, injects enough CO
2, make pressure be increased to the first predetermined boost pressure value, keep more than 24h, take out appropriate solution at the middle part of autoclave;
Again pressure is elevated to the second predetermined boost pressure value, and keeps more than 24h, and then take out appropriate solution from the middle part of autoclave;
Successively pressure is elevated to each predetermined boost pressure value, carries out the operation keeping more than 24h and take out appropriate solution at the middle part of autoclave respectively;
And then be depressured to each predetermined step-down force value successively and carry out respectively keeping more than 24h and taking out the operation of appropriate solution at the middle part of autoclave;
Afterwards, in autoclave, pour local water into, close good autoclave, according to CO
2solubleness under set pressure, the first predetermined warming temperature value, injects enough CO
2, pressure is elevated to set pressure, and the temperature of autoclave is increased to the first predetermined warming temperature value, keep more than 24h, take out appropriate solution at the middle part of autoclave;
Again temperature is elevated to the second predetermined warming temperature value, and keeps more than 24h, and then take out appropriate solution from the middle part of autoclave;
Successively temperature is elevated to each predetermined warming temperature value, carries out the operation keeping more than 24h and take out appropriate solution at the middle part of autoclave respectively;
And then cool to each predetermined cooling temperature value successively and the operation carried out maintenance more than 24h respectively and take out appropriate solution at the middle part of autoclave;
With the sample solution that hydrochloric acid solution titration is taken out at every turn, then ion chromatograph is utilized to detect each sample solution of taking-up and the ion concentration of initial local water, the ion concentration of initial local water is utilized to deduct each ion concentration of taking out liquid, obtain the ion concentration variable quantity under different temperatures, pressure condition, then calculate sedimentary quality according to sedimentary Molecular weights.
2. method according to claim 1, wherein, the method is further comprising the steps of:
Set up the relation curve between design temperature, pressure, sedimentary quality.
3. method according to claim 1, wherein, the ion concentration utilizing ion chromatograph to detect sample solution and the initial local water at every turn taken out is Ca
2+concentration.
4. method according to claim 1, wherein, the addition of described local water is that 200mL is to 2/3 of described autoclave volume.
5. method according to claim 4, wherein, the volume of described autoclave is 500-2000mL.
6. method according to claim 1, wherein, the volume of the solution taken out at the middle part of autoclave is 10mL.
7. method according to claim 1, wherein, the method comprises the following steps:
In autoclave, pour local water into, close good autoclave, temperature is elevated to design temperature, according to CO
2solubleness under design temperature, 5MPa, injects enough CO
2, make pressure be increased to 5MPa, keep 24h, take out 10mL solution at the middle part of autoclave;
Again pressure is elevated to 10MPa, and keeps 24h, then take out 10mL solution from the middle part of autoclave;
Successively pressure is elevated to 15MPa, 20MPa, 25MPa, carries out the operation keeping 24h and take out 10mL solution at the middle part of autoclave respectively;
And then be depressured to 20MPa, 15MPa, 10MPa, 5MPa, 0.1MPa successively and carry out respectively keeping 24h and the operation at the middle part of autoclave taking-up 10mL solution;
Afterwards, in autoclave, pour local water into, close good autoclave, pressure is elevated to set pressure, according to CO
2in set pressure, solubleness at 20 DEG C, inject enough CO
2, elevate the temperature to 20 DEG C, keep 24h, take out 10mL solution at the middle part of autoclave;
Again temperature is elevated to 30 DEG C, and keeps 24h, then take out 10mL solution from the middle part of autoclave;
Successively temperature is elevated to 40 DEG C, 50 DEG C, 60 DEG C, 70 DEG C, 80 DEG C, 90 DEG C, 100 DEG C, carries out the operation keeping 24h and take out 10mL solution at the middle part of autoclave respectively;
And then cool to 90 DEG C, 80 DEG C, 70 DEG C, 60 DEG C, 50 DEG C, 40 DEG C, 30 DEG C, 20 DEG C successively and carry out respectively keeping 24h and the operation at the middle part of autoclave taking-up 10mL solution;
With the sample solution that hydrochloric acid solution titration is taken out at every turn, then ion chromatograph is utilized to detect each sample solution of taking-up and the ion concentration of initial local water, the ion concentration of initial local water is utilized to deduct each ion concentration of taking out liquid, obtain the ion concentration variable quantity under different temperatures, pressure condition, then calculate sedimentary quality according to sedimentary Molecular weights;
Set up the relation curve between design temperature, pressure, sedimentary quality.
8. the method according to claim 1 or 7, wherein, the concentration of described hydrochloric acid solution is 10wt%.
9. measure a device for carbon dioxide-local water effect production precipitation capacity for the method described in any one of claim 1-8, it comprises back pressure impact damper, tensimeter, check valve, test tube, autoclave, backpressure pump, wherein:
Described back pressure impact damper is connected with described check valve, and the connecting line of the two is provided with tensimeter;
Described check valve is also connected with the top entry of described test tube and autoclave respectively;
The top of described autoclave is provided with an evacuation port, and the outlet at bottom of described autoclave is communicated with described backpressure pump.
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