CN104007232A - Automatically controlled acid-rock reaction kinetic parameter experimental apparatus - Google Patents
Automatically controlled acid-rock reaction kinetic parameter experimental apparatus Download PDFInfo
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Abstract
The invention discloses an automatically controlled acid-rock reaction kinetic parameter experimental apparatus, which belongs to the technical field of petroleum engineering. The objective of the invention is to overcome the technical problems of inaccurate measured kinetic parameters and discontinuous experiment operation caused by easy fluctuation of temperature and pressure in a reaction vessel in the prior art. The apparatus comprises a high pressure reaction vessel with a self-heating function; the high pressure reaction vessel is respectively connected with a pressure stabilizing system, a preheating system and a sampling system; the top of the high pressure reaction vessel is provided with a mixer shaft, the lower end of the mixer shaft extends into the high pressure reaction vessel and is provided with a thermoplastic pipe, and the upper end of the mixer shaft is in transmission connection with the output shaft of an agitator motor. The apparatus provided by the invention enables experimental conditions of an acid-rock reaction to be automatically controlled in the states of constant temperature and constant pressure, improves accuracy of determination of each kinetic parameter and continuity of experiment operation, is applicable to experimental determination of acid-rock reaction kinetic parameters in petroleum engineering and has high determination precision and a high automation degree.
Description
Technical field
The present invention relates to a kind of experimental provision, particularly a kind of sour rock reaction dynamics Experiment Parameter device of automatic control, belongs to petroleum engineering field.
Background technology
Along with going deep into of oil field at home exploratory development, carbonate reservoir and complex reservoir become main Oil Reservoir Types and newly-increased reserves object more and more, and acid fracturing is the effective measures that such reservoir oil gas well is gone into operation and increased production.Acid rock reaction velocity has determined the etching form of effective distance of live acid and crack wall, thereby has determined the flow conductivity in crack after acid fracturing, is the key factor that finally affects acid fracturing effect.But, under different temperature, pressure condition, study dissimilar acid solution and rock reaction power mathematic(al) parameter, for improving acid fracturing reservoir reconstruction effect, bring into play to greatest extent oil reservoir potential, further improve overall development benefit significant.
The patent document that a name is called " different viscosities acid fluid system acid rock reaction dynamics parametric measurement device " is disclosed in Chinese patent database on April 28th, 2010, publication number is: 101699282A, this device forms main part by the clamper of a reactor and two cover different models, also comprises that some are to propulsion system and some simple measurement mechanisms that rotation is provided in kettle.When experiment, stir the liquid of reactor inside, acid solution is crossed the laccolite surface generation sour rock fixing with kettle sandwich device along kettle wall flow and is reacted, from the plug of kettle opposite side clamper or the relief port of kettle bottom, can sample the ion concentration analysis of carrying out acid solution, measure sour rock reaction dynamics parameter.
Its weak point is: the temperature and pressure in experimentation in reactor fluctuates along with the carrying out of sour rock reaction, even if the reagent that repeatedly serial sampling obtains in same reactor, its reaction conditions also may be incomplete same, and this will inevitably reduce the accuracy of the kinetic parameter of measuring; For gathering as far as possible the reaction reagent under identical experiment environment, operating personnel conventionally detect by an unaided eye and judge still interior reaction temperature and pressure, in the time that temperature and pressure value approaches, carry out sample collection, cause experimentation uncontinuity, work efficiency is low and precision is on the low side.
In prior art, there is a kind of rotary reagent sampling device, comprise rotation reagent disc, fixed mount and rotary drive motor, rotation reagent disc is arranged on fixed mount, on rotation reagent disc, be provided with at least one Reagent Tube and place position, bottom centre at rotation reagent disc is provided with turning axle, this turning axle drives by rotary drive motor, realizes pivoting of rotation reagent disc.This device has effectively improved sampling efficiency, has met the requirement of sampling filling in enormous quantities.
Summary of the invention
The object of the invention is to overcome deficiency of the prior art, a kind of sour rock reaction dynamics Experiment Parameter device of automatic control is provided, solve reactor temperature and pressure in prior art easily fluctuation cause that the kinetic parameter measured is inaccurate, the discontinuous technical matters of experimental implementation.
The object of the present invention is achieved like this: a kind of sour rock reaction dynamics Experiment Parameter device of automatic control, comprise the autoclave that possesses self heating function, and on described autoclave, be connected with respectively voltage-stabilizing system, pre-heating system and sampling system; The top of autoclave is provided with shaft, and the lower end of shaft is stretched into autoclave and is provided with the thermoplastic tube for connecting rock core, and the upper end of shaft and the output shaft of stirring motor are in transmission connection;
Described voltage-stabilizing system includes supercharge pump, pressurized container, two position three-way valve one and two position three-way valve two, and the inner chamber of described pressurized container is divided into upper cavity and lower chamber by packed-piston; The input port of described two position three-way valve one is connected with supercharging delivery side of pump, and delivery outlet is connected with the lower chamber of pressurized container, and by-pass port is communicated with atmosphere; The input port of described two position three-way valve two is connected with the upper cavity of pressurized container, and delivery outlet is connected with pressure regulator valve, and by-pass port is connected with high-pressure air source; Described pressure regulator valve is communicated with autoclave top by pipeline one;
Described pre-heating system comprises primary heater, leads up to atmospheric valve and be communicated with atmosphere in the top of described primary heater, and another road is connected with air station through gas admittance valve; The bottom of primary heater is connected with autoclave bottom by valve three;
Described sampling system includes the pneumatic valve one, sampler, the pneumatic valve two that are linked in sequence, between described pneumatic valve one and sampler, be also connected with pneumatic valve three by arm, the outlet of described pneumatic valve three is communicated with atmosphere, and the outlet below of pneumatic valve two is provided with sampler; Described air station is also connected with respectively the solenoid valve three of controlling the solenoid valve one of pneumatic valve one folding, the solenoid valve two of controlling pneumatic valve two foldings and three foldings of control pneumatic valve.
When the present invention works, by the pressure in voltage-stabilizing system control autoclave, make autoclave in pressure constant state, by pre-heating system, acid solution is preheated, and utilize the pressure of air station that acid solution is pressed in autoclave, autoclave utilizes the self heating function of self to make sour rock reaction betide temperature constant state, and sampling system samples the reagent in autoclave according to reaction time timing, assaying reaction kinetic parameter.Compared with prior art, the invention has the beneficial effects as follows: 1, be provided with voltage-stabilizing system and possess the autoclave of self heating function, can simulated formation temperature, the actual response environment such as pressure condition, the every kinetic parameter of Accurate Determining; 2, the temperature and pressure in autoclave all can be controlled at steady state (SS), ensures that sampling operation can carry out continuously, has further improved mensuration precision and work efficiency; 3, possess sampling system, can realize automatic time sampling, reduce operating personnel's workload.The present invention is applicable to the measuring of sour rock reaction dynamics parameter in petroleum engineering, has higher mensuration precision and automaticity.
As a further improvement on the present invention, on described pipeline one, be also connected with shielding system, described shielding system includes U-shaped linker and safety valve, and one end of described U-shaped linker is connected with pipeline one, the other end is connected with the import of described safety valve, and the outlet of safety valve is connected with atmosphere.In the time that autoclave internal pressure exceedes setting, safety valve is opened automatically, ensures personal safety and equipment safety operation.
As a further improvement on the present invention, the inflow point of described safety valve is also connected with pressure transducer, on described pipeline one, is also connected with blowdown valve, and described pressure transducer is connected with blowdown valve signal.Pressure transducer detects the force value of safety valve inflow point, and in the time that pressure exceeds setting, blowdown valve is opened, and avoids autoclave to be operated in the working environment of hypertonia, reduces potential safety hazard.
As a further improvement on the present invention, the lower end of described shaft is also provided with stirrer paddle, and described stirrer paddle is provided with 4 ~ 6.Shaft drives stirrer paddle rotation, thereby makes acid solution reach disturbed flow condition, and the synchronous rock core rotating also can be fully and acid solution contact reaction, ensures that in acid solution, each ion concentration is even, and degree of accuracy is tested in raising.
As a further improvement on the present invention, the bottom of described primary heater is also connected with bleeder valve.In primary heater, remaining acid solution can derive by the bleeder valve of primary heater bottom.
As a further improvement on the present invention, described sampler is rotary reagent sampling device.Rotary reagent sampling device can improve sampling efficiency effectively, meets sampling filling requirement in enormous quantities.
As preferred version of the present invention, the atmospheric pressure value of described high-pressure air source is 3 ~ 16MPa, and the atmospheric pressure value of described air station is 0.78 ~ 0.82MPa.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Wherein, 1 autoclave; 2 shafts; 3 stirrer paddles; 4 stirring motors; 5 rock cores; 6 supercharge pumps; 7 pressurized containers; 8 two position three-way valves one; 9 two position three-way valves two; 10 pressure regulator valves; 11 high-pressure air source; 12 primary heaters; 13 atmospheric valves; 14 gas admittance valves; 15 air stations; 16 valves three; 17 bleeder valves; 18 sampler; 19 pneumatic valves one; 20 pneumatic valves two; 21 pneumatic valves three; 22 solenoid valves one; 23 solenoid valves two; 24 solenoid valves three; 25 samplers; 27 blowdown valves; 28U type linker; 29 safety valve.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
As shown in Figure 1, this device comprises the autoclave 1 that possesses self heating function, preferably open electric heating autoclave 1.On autoclave 1, be connected with respectively voltage-stabilizing system, pre-heating system and sampling system.The top of autoclave 1 is provided with shaft 2, the lower end of shaft 2 is stretched into autoclave 1 and is provided with the thermoplastic tube for connecting rock core 5, the output shaft of the upper end of shaft 2 and stirring motor 4 is in transmission connection, stirring motor 4 can be selected AC servo motor, and the rotating speed of shaft 2 can be set by controller according to on-the-spot discharge capacity.For ensureing that in acid solution, each ion concentration is even, the lower end of shaft 2 is also provided with stirrer paddle 3, and stirrer paddle 3 is provided with 4 ~ 6, preferably 4.
Voltage-stabilizing system includes supercharge pump 6, pressurized container 7, two position three-way valve 1 and two position three-way valve 29, and the inner chamber of pressurized container 7 is divided into upper cavity and lower chamber by packed-piston.The input port of two position three-way valve 1 is connected with the outlet of supercharge pump 6, and delivery outlet is connected with the lower chamber of pressurized container 7, and by-pass port is communicated with atmosphere.The input port of two position three-way valve 29 is connected with the upper cavity of pressurized container 7, delivery outlet is connected with pressure regulator valve 10, by-pass port is connected with high-pressure air source 11, pressure regulator valve 10 is communicated with autoclave 1 top by pipeline one, for ensureing to detect in real time the force value of pressure regulator valve 10 porch, the porch of pressure regulator valve 10 can arrange a pressure unit, and pressure unit is connected with controller signals.The atmospheric pressure value of high-pressure air source 11 is 3 ~ 16MPa, preferably 10MPa, and the blanketing gas of high-pressure air source 11 is selected the nitrogen that chemical property is more stable.
Pre-heating system comprises primary heater 12, leads up to atmospheric valve 13 and be communicated with atmosphere in the top of primary heater 12, and another road is connected with air station 15 through gas admittance valve 14, and the atmospheric pressure value of air station 15 is 0.78 ~ 0.82MPa, preferably 0.8MPa.The bottom of primary heater 12 is connected with autoclave 1 bottom by valve 3 16, and the bottom of primary heater 12 is also connected with bleeder valve 17, for the interior untapped acid solution of the primary heater 12 of releasing.
Sampling system includes the pneumatic valve 1, sampler 18, the pneumatic valve 2 20 that are linked in sequence, between pneumatic valve 1 and sampler 18, be also connected with pneumatic valve 3 21 by arm, the outlet of pneumatic valve 3 21 is communicated with atmosphere, and the outlet below of pneumatic valve 2 20 is provided with sampler 25.Sampler 25 adopts rotary reagent sampling device 25, comprise rotation reagent disc, fixed mount and rotary drive motor, the entrance of Reagent Tube and the corresponding setting of outlet of pneumatic valve 2 20 on rotation reagent disc, controller control rotary drive motor timing rotation, realize pivoting of rotation reagent disc, meet sampling filling requirement in enormous quantities.Air station 15 is also connected with respectively the solenoid valve 3 24 of controlling the solenoid valve 1 of pneumatic valve one 19 foldings, the solenoid valve 2 23 of controlling pneumatic valve 2 20 foldings and 3 21 foldings of control pneumatic valve.
On pipeline one, be also connected with shielding system, shielding system includes U-shaped linker 28 and safety valve 29, and one end of U-shaped linker 28 is connected with pipeline one, and the other end is connected with the import of safety valve 29, and the outlet of safety valve 29 is connected with atmosphere.The inflow point of safety valve 29 is also connected with pressure transducer, is also connected with blowdown valve 27 on pipeline one, and pressure transducer is connected with blowdown valve 27 signals.Pressure transducer is for detection of the pressure of safety valve 29 inflow points and send controller to, controller is compared with default pressure criteria value, if detected pressures value is higher, controller sends control signal opens blowdown valve 27, ensure that autoclave 1 always works under safe pressure value, reduce potential safety hazard.
When the present invention works, first utilize controller control to connect input port and the by-pass port of two position three-way valve 29, the upper cavity air pressure of pressurized container 7 raises rapidly, two position three-way valve 29 is switched to the state of input port and delivery outlet connection; Then, control input port and the delivery outlet opening supercharge pump 6 and connect two position three-way valve 1, it is up that lower chamber pressure increases promotion packed-piston, and upper cavity air pressure increases until reach controller setup pressure value; , the acid solution in primary heater 12 is carried out and heating, acid solution is heated to after preset temperature meanwhile, and valve 3 16 and the gas admittance valve 14 being connected with air station 15 are opened in controller control, and acid solution is pressed in autoclave 1; Pressure regulator valve 10 is opened in controller control makes the air pressure in autoclave 1 equal default reservoir pressure, and meanwhile autoclave 1 starts heating and makes temperature of reaction equal default formation temperature, realizes temperature automatically controlled and function Automatic-boosting.When sampling, first utilize controller control to open solenoid valve 1, solenoid valve 2 23, the pressure of air station 15 impels pneumatic valve 1, pneumatic valve 2 20 to open, and acid solution is injected Reagent Tube, and can set voluntarily concrete sample time according to acid solution collection capacity.Arrive sample time, shut electromagnetic valve 1, and opens solenoid valve 3 24, pneumatic valve 3 21 is opened with atmosphere and is communicated with, and the acid solution in being stored in sampler 18 is all injected after Reagent Tube, and shut electromagnetic valve 3 24, completes primary sample.After experiment finishes, open blowdown valve 27, atmospheric valve 13 pressure releases, open bleeder valve 17 quick fluid-discharges.
The present invention is not limited to above-described embodiment; on the basis of technical scheme disclosed by the invention; those skilled in the art is according to disclosed technology contents; do not need performing creative labour just can make some replacements and distortion to some technical characterictics wherein, these replacements and distortion are all in protection scope of the present invention.
Claims (7)
1. a sour rock reaction dynamics Experiment Parameter device of automatically controlling, is characterized in that, comprises the autoclave that possesses self heating function, is connected with respectively voltage-stabilizing system, pre-heating system and sampling system on described autoclave; The top of autoclave is provided with shaft, and the lower end of shaft is stretched into autoclave and is provided with the thermoplastic tube for connecting rock core, and the upper end of shaft and the output shaft of stirring motor are in transmission connection;
Described voltage-stabilizing system includes supercharge pump, pressurized container, two position three-way valve one and two position three-way valve two, and the inner chamber of described pressurized container is divided into upper cavity and lower chamber by packed-piston; The input port of described two position three-way valve one is connected with supercharging delivery side of pump, and delivery outlet is connected with the lower chamber of pressurized container, and by-pass port is communicated with atmosphere; The input port of described two position three-way valve two is connected with the upper cavity of pressurized container, and delivery outlet is connected with pressure regulator valve, and by-pass port is connected with high-pressure air source; Described pressure regulator valve is communicated with autoclave top by pipeline one;
Described pre-heating system comprises primary heater, leads up to atmospheric valve and be communicated with atmosphere in the top of described primary heater, and another road is connected with air station through gas admittance valve; The bottom of primary heater is connected with autoclave bottom by valve three;
Described sampling system includes the pneumatic valve one, sampler, the pneumatic valve two that are linked in sequence, between described pneumatic valve one and sampler, be also connected with pneumatic valve three by arm, the outlet of described pneumatic valve three is communicated with atmosphere, and the outlet below of pneumatic valve two is provided with sampler; Described air station is also connected with respectively the solenoid valve three of controlling the solenoid valve one of pneumatic valve one folding, the solenoid valve two of controlling pneumatic valve two foldings and three foldings of control pneumatic valve.
2. the sour rock reaction dynamics Experiment Parameter device of automatic control according to claim 1, it is characterized in that, on described pipeline one, be also connected with shielding system, described shielding system includes U-shaped linker and safety valve, one end of described U-shaped linker is connected with pipeline one, the other end is connected with the import of described safety valve, and the outlet of safety valve is connected with atmosphere.
3. the sour rock reaction dynamics Experiment Parameter device of automatic control according to claim 2, it is characterized in that, the inflow point of described safety valve is also connected with pressure transducer, on described pipeline one, is also connected with blowdown valve, and described pressure transducer is connected with blowdown valve signal.
4. the sour rock reaction dynamics Experiment Parameter device of automatic control according to claim 1, is characterized in that, the lower end of described shaft is also provided with stirrer paddle, and described stirrer paddle is provided with 4 ~ 6.
5. the sour rock reaction dynamics Experiment Parameter device of automatic control according to claim 1, is characterized in that, the bottom of described primary heater is also connected with bleeder valve.
6. the sour rock reaction dynamics Experiment Parameter device of automatic control according to claim 1, is characterized in that, described sampler is rotary reagent sampling device.
7. the sour rock reaction dynamics Experiment Parameter device of automatic control according to claim 1, is characterized in that, the atmospheric pressure value of described high-pressure air source is 3 ~ 16MPa, and the atmospheric pressure value of described air station is 0.78 ~ 0.82MPa.
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Cited By (5)
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| CN104316650A (en) * | 2014-10-20 | 2015-01-28 | 中国石油天然气股份有限公司 | Rapid high-temperature high-pressure dynamic acid rock experiment device and method |
| CN104597219A (en) * | 2014-12-26 | 2015-05-06 | 西南交通大学 | Water-rock chemical dynamic reaction double-system test unit |
| CN106556597A (en) * | 2016-10-11 | 2017-04-05 | 成都理工大学 | Acid-rock reaction experimental provision |
| CN114660224A (en) * | 2022-03-29 | 2022-06-24 | 西南石油大学 | Device and method for measuring reaction kinetic parameters of acid rock in high-viscosity liquid |
| CN117054284A (en) * | 2023-10-12 | 2023-11-14 | 西南石油大学 | Acid rock reaction rate prediction device and method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104316650A (en) * | 2014-10-20 | 2015-01-28 | 中国石油天然气股份有限公司 | Rapid high-temperature high-pressure dynamic acid rock experiment device and method |
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| CN104597219A (en) * | 2014-12-26 | 2015-05-06 | 西南交通大学 | Water-rock chemical dynamic reaction double-system test unit |
| CN104597219B (en) * | 2014-12-26 | 2017-10-13 | 西南交通大学 | A kind of water rock chemical kinetic reaction dual system experimental rig |
| CN106556597A (en) * | 2016-10-11 | 2017-04-05 | 成都理工大学 | Acid-rock reaction experimental provision |
| CN106556597B (en) * | 2016-10-11 | 2019-07-05 | 成都理工大学 | Acid-rock reaction experimental provision |
| CN114660224A (en) * | 2022-03-29 | 2022-06-24 | 西南石油大学 | Device and method for measuring reaction kinetic parameters of acid rock in high-viscosity liquid |
| CN117054284A (en) * | 2023-10-12 | 2023-11-14 | 西南石油大学 | Acid rock reaction rate prediction device and method |
| CN117054284B (en) * | 2023-10-12 | 2023-12-22 | 西南石油大学 | Acid rock reaction rate prediction device and method |
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