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Device for measuring acid/rock reaction dynamics parameters of acid liquid systems with different viscosities

A technology of kinetic parameters and acid-rock reaction, applied in the field of petroleum engineering, can solve problems such as viscosity changes in the extension direction of formation fractures that are not considered

Inactive Publication Date: 2010-04-28
伊向艺 +4
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Problems solved by technology

[0002] The traditional rotating rock disk experiment is widely used to determine the kinetic parameters of acid rock reaction, such as reaction activation energy, H + Effective mass transfer coefficient, reaction order, reaction rate constant, etc., but did not consider the influence of the extension direction of formation fractures, rock deposition direction, viscosity change of acid liquid system, etc. on the determination of acid rock reaction parameters

Method used

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  • Device for measuring acid/rock reaction dynamics parameters of acid liquid systems with different viscosities
  • Device for measuring acid/rock reaction dynamics parameters of acid liquid systems with different viscosities

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Embodiment Construction

[0016] The present invention will be described in detail below through specific experimental steps. The experimental process is as follows:

[0017] 1. First connect the pipeline and various components, and then test the pressure to confirm that the working system is normal;

[0018] 2. Put the core used in the experiment into the holder, pay attention to the direction of the processed rock surface and the direction of the rock surface when taking the core. If only one size rock sample is made, the other side is blocked with a spacer and a dead block. To avoid acid leakage, a throttle valve with a small hole can also be installed for sampling, and try to ensure that there is no air inside;

[0019] 3. After connecting the holder, heat the reaction kettle to the formation temperature, and add the preheated acid solution;

[0020] 4. Gradually apply ring pressure to the gripper, and at the same time pressurize the reaction kettle to keep the ring pressure always 2 to 3 MPa hig...

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Abstract

The invention discloses a device for measuring acid / rock reaction dynamics parameters of acid liquid systems with different viscosities, which is used in acid fracturing modification techniques of carbonate reservoir in the field of petroleum engineering, is suitable for measuring the acid / rock reaction dynamics parameters of liquid systems with different viscosities and acid liquid concentrations, and more precisely simulates the real flow direction and characteristics of acid liquid. The device comprises a main body consisting of a reaction kettle and two sets of different models of clamp holders, and also comprises power units for providing power for the kettle to rotate, and simple measuring units. The main body is formed by forging a Hastelloy alloy material, and the system bears pressure of 20 MPa and resists temperature of 150DEG C. In an experiment, liquid in the reaction kettle is stirred, acid liquid flows along the wall of the kettle body and undergoes acid / rock reaction with the surface of batholiths fixed by the clamp holders on two sides of the kettle body; and a sample can be taken through a plug position of a clamp holder on the other side of the kettle body or a pressure relief port on the lower part of the kettle body, ion concentration of the acid liquid is analyzed, and the acid / rock reaction dynamics parameters are measured.

Description

technical field [0001] The invention belongs to the field of petroleum engineering, and is used for the determination of acid-rock reaction kinetic parameters in the acid fracturing technology of carbonate rock oil and gas reservoirs. technical background [0002] The traditional rotating rock disk experiment is widely used to determine the kinetic parameters of acid-rock reaction, such as reaction activation energy, H + Effective mass transfer coefficient, reaction order, reaction rate constant, etc., but the influence of formation fracture extension direction, rock deposition direction, viscosity change of acid liquid system, etc. on the determination of acid-rock reaction parameters is not considered. The invention is suitable for the determination of acid-rock reaction kinetic parameters of liquid systems with different viscosities and acid concentrations, and more accurately simulates the real flow direction and characteristics of acid in fractures. SUMMARY OF THE INV...

Claims

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Application Information

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IPC IPC(8): G01N33/00G01N33/24
Inventor 伊向艺卢渊李沁张哨楠
Owner 伊向艺
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