Core Holder

Abstract

The invention discloses a core holder. The core holder is used for arranging a core sample and comprises a cylinder, a sealing sleeve, supports, plugs and gaskets, wherein the cylinder is provided with a first end and a second end which are back to each other; the sealing sleeve is arranged between the cylinder and the core sample; the supports are arranged between the sealing sleeve and the coresample and are distributed at the two sides of the core sample; the side, facing the core sample, of each support is provided with a through groove; the plugs are arranged at the two ends of the sealing sleeve, and end channels are formed inside the plugs; each gasket is arranged between one plug and the core sample; the end channels communicate with the grooves to form flowing channels; and crudeoil can flow through one groove through the end channel at one end, then flow through a core and finally flow out through the end channel at the other end. The core holder can meet the requirement onheterogeneous core saturated oil and achieve the function of improving the saturation of a heterogeneous core low-permeability layer.

Description

technical field [0001] The invention relates to the technical field of petrochemical core displacement experiments, in particular to a core holder. Background technique [0002] The statements in this section only provide background information related to the present disclosure and may not constitute prior art. [0003] In recent years, artificial cores have been widely used in the field of petroleum exploration and development because of their controllable physical properties and good repeatability. Due to the heterogeneity of the actual reservoir, in order to explore the influence of heterogeneity on the development effect and how to improve the heterogeneity of the reservoir to enhance oil recovery in the experiment, multi-layer heterogeneous cores are usually used to carry out relevant physical Simulation experiment. Different from the original oil saturation formed by the slow migration of oil and gas in the actual reservoir, the current physical simulation experiment...

AI Technical Summary

Problems solved by technology

Even increasing the oil-displacement water pressure and displacement factor during saturation cannot improve the situation

In the follow-up simulated displacement process, even if the oil displacement agent spreads to the low-permeability layer, it cannot displace crude oil, thus affecting the accuracy of the experimental results

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