In-situ wetting angle measuring device and wetting angle determining method based on deep learning

Abstract

The embodiment of the invention provides an in-situ wetting angle measuring device and a wetting angle determining method based on deep learning. The in-situ wetting angle measuring device comprises oil-water pretreatment equipment and wetting angle measuring equipment, and the method is a wetting angle determining method based on deep learning. Particles with different particle sizes and properties are placed in the oil-water pretreatment equipment to simulate various porous media and used for simulating full contact reaction of crude oil, water and rock, so that crude oil components are adsorbed on the surface of the rock and the mass transfer effect between oil and water is fully generated to obtain an oil reservoir in-situ fluid, and the actual condition of an oil reservoir is simulated to the maximum extent. The wetting angle measurement result is more accurate; furthermore, the convolutional deep learning network is introduced into wetting liquid form capture and simulation, high-precision recognition of the wetting angle is achieved, the problem that the calculation error of the wetting angle is large due to human factors and formula applicability differences is avoided, and the measurement precision of the wetting angle is improved.

Description

technical field [0001] The embodiment of this specification relates to the technical field of oilfield development, in particular to an in-situ wetting angle measuring device and a method for determining the wetting angle based on deep learning. Background technique [0002] Wetting angle (contact angle) is the most important physical quantity to describe the wettability of liquid-solid interface, and it plays a wide role in surface chemistry, chemical production, material preparation, petrochemical industry and environmental protection. Taking oilfield development and enhanced oil recovery research as an example, as the main evaluation index of interface wettability, it is directly related to oil recovery. With the continuous advancement of oil and gas field development, how to accurately and truly evaluate the wettability of rock surfaces in reservoirs has become the key for petroleum engineers to choose development plans and evaluate the pros and cons of many methods of e...

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Problems solved by technology

[0004] The existing wetting angle measurement devices do not meet the actual needs of oilfield development / enhanced oil recovery research, ignoring the adsorption of crude oil components on the rock surface and the mass transfer between oil and water under reservoir conditions, which leads to the deviation of the measured wettability measurement results In fact, it has affected engineering practice to a certain extent

In addition, the current wetting angle determination is mainly obtained through the empirical formula of the fitting rule. Due to the influence of human factors (baseline determination) and the applicability of the formula, there are large errors in the experimental results, and it is difficult to meet the high-precision wetting angle. Determination of needs

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