Device and method for measuring reaction kinetic parameters of high-viscosity liquid acid rock
A technology of reaction kinetics and measuring devices, which is applied in the field of petroleum engineering, can solve problems such as inaccurate acid-base titration results, complicated experimental operations, and inability to carry out high-temperature and high-pressure experiments with drainage measurement methods, so as to improve measurement accuracy and work efficiency, reduce Environmental pollution, the effect of improving accuracy
Pending Publication Date: 2022-06-24
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology
[0008] The purpose of the present invention is to overcome the deficiencies of the prior art, solve the limitations of the prior art that the experimental operation is complicated, the acid-base titration result is inaccurate due to the viscosity of the acid solution and manual operation, and the drainage measurement method cannot be used for high-temperature and high-pressure experiments. A device and method for measuring kinetic parameters of high-viscosity liquid-acid rock reaction, so that it can truly simulate the chemical reaction between high-viscosity acid liquid and rock during construction, and accurately calculate the reaction rate of acid-rock
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[0057] like figure 1 As shown in the figure, the device for measuring the kinetic parameters of high-viscosity liquid acid-rock reaction provided by the present invention includes a high-temperature and high-pressure reaction kettle 7 with a self-heating function, and a preheating system is respectively connected to the high-temperature and high-pressure reaction kettle 7. , pollutant treatment system and measurement system; the outer surface of the high-temperature and high-pressure reactor 7 is wrapped with a heating jacket; the top of the high-temperature and high-pressure reactor 7 is connected with the upper cover by threads, and the upper cover is provided with a three-blade rotor 9, and the upper end of the three-blade rotor 9 is connected to The output shaft of the stirring motor 8 is connected by transmission, and the upper cover is connected to the measuring system through 10 valves 3; the inner middle part of the high temperature and high pressure reactor 7 is connec...
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The invention relates to a device and a method for measuring reaction kinetic parameters of high-viscosity liquid acid rock. The device comprises a high-temperature and high-pressure reaction kettle, a preheating system, a pollutant treatment system and a measuring system, the preheating system comprises an acid storage tank, the left side of the acid storage tank is connected with an air pump through a valve I, and the right side of the acid storage tank is connected with a high-temperature and high-pressure reaction kettle through a valve II; the pollutant treatment system comprises a waste liquid treatment device; the waste liquid treatment device is connected with the high-temperature and high-pressure reaction kettle through a valve IV; the measurement system comprises an HCl gas treatment tank, a CO2 gas collection tank and an electronic balance, the HCl gas treatment tank contains a saturated NaCl solution, the CO2 gas collection tank contains a NaOH solution, and the electronic balance is mounted at the lower part of the CO2 gas collection tank. According to the measuring device and method, the chemical reaction of the high-viscosity acid liquid and the rock in the construction process can be truly simulated, and the acid rock reaction rate is tested under different temperature and pressure conditions so as to guide the technical measures of the acid fracturing process.
Description
technical field [0001] The invention relates to an acid-rock reaction rate measuring device and method, in particular to a measuring device and method for high-viscosity liquid acid-rock reaction kinetic parameters, belonging to the field of petroleum engineering. Background technique [0002] Acid fracturing is one of the commonly used effective measures for reservoir stimulation, and the kinetic parameters of acid-rock reaction are the basis for acid fracturing design. The acid-rock reaction kinetics is a description of the chemical reaction rate after the acid liquid contacts the soluble matter in the pores or fractures. The acid-rock reaction rate determines the effective action distance of the acid liquid and the etching form of the fracture wall, thereby determining the acid-rock reaction rate. The conductivity of fractures after fracturing is the key factor that ultimately affects the effect of acid fracturing. [0003] In engineering practice, different types of sur...
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IPC IPC(8): G01N31/00G01N5/04
CPCG01N31/00G01N5/04
Inventor 杨兆中杨荣相李小刚朱静怡康志宏
Owner SOUTHWEST PETROLEUM UNIV