Device, system and method for amplifying and imaging microbubbles in rock pore space

Abstract

The invention provides a device, system and method for amplifying and imaging microbubbles in a rock pore space, and the device comprises a cover body for preventing X-rays from leaking, and a rock sample accommodating device, an X-ray receiving plate and an X-ray generating device which are respectively arranged in the cover body, so that the X-rays with scattering angles and emitted by the X-ray generating device penetrate through a target rock sample in the rock sample accommodating device. The X-ray generating device, the rock sample accommodating device and the X-ray receiving plate are sequentially arranged along the length direction of the cover body; the X-ray receiving plate is used for moving along the length direction and / or the width direction of the cover body in an area between the rock sample accommodating device and the inner wall of one side of the cover body so as to amplify and image a target rock sample through which the X-rays penetrate. According to the invention, the amplification and imaging of the rock sample can be effectively realized, the definition of the amplification and imaging of the rock sample is effectively improved, and then the convenience, accuracy and definition of microbubble recognition of the rock pore space can be improved.

Description

technical field [0001] The present application relates to the technical field of oilfield development, in particular to a device, system and method for magnifying imaging of microbubbles in rock pore spaces. Background technique [0002] Gas injection flooding is the main development direction of greatly enhanced oil recovery technology at present. With the gradual deepening of oil flooding mechanism, the form of gas in the seepage process has not been clearly understood. It involves the judgment of gas in the form of dissolution or bubbles in oil / water fluid, the state of bubbles in the pore space, the size and change of bubbles, etc. [0003] Obviously, visual detection is the most direct method. The prior art usually adopts optical visual method to detect the flow of fluid in the pore structure and the glass interlayer to approximate the flow in the pores. This method uses an optical microscope to achieve magnified detection. Since the size of pores and channels is usual...

AI Technical Summary

Problems solved by technology

The disadvantage is that due to the relatively small size of the core model, the CT scanning results are not enough to show the characteristics of the pore structure, and the bubble / gas phase is usually mixed with the oil and water phases, and the resolution is not enough to identify the main body and boundary of the microbubbles

At present, there is nano-CT technology for detecting pore structure, and its effective resolution reaches the micron scale, but the sample size required by this technology is less than a millimeter, so it is extremely restrictive and cannot be applied in core-level experiments

Images