Sand filling model pipe

Abstract

The invention provides a sand filling model pipe. The sand filling model pipe comprises a main body, plugs, pressing caps, an inlet and an outlet, wherein the main body is a hollow pipe, and is provided with a sampling port and a pressure measuring port; the plugs are positioned at the two ends of the main body, and are connected with the main body through screws; the pressing caps are fixedly connected with the plugs; the inlet and the outlet are positioned at the two ends of the sand filling model pipe; the inner wall of the main body is uniform and consistent in roughness, and is an electrospark roughened inner wall; the roughness of the inner wall of the main body is greater than Ra12.5; the plugs are double-ring sealing plugs; and a temperature sensing heating device is arranged in a shell of the main body, and is fixedly connected with the main body. The sand filling model pipe can effectively prevent the streaming phenomenon between sand particles and the inner wall in the experimental process, so that the precision of experimental results is guaranteed, and the tightness is good; and the sand filling model pipe is provided with the temperature sensing heating device, so that the cleaning is facilitated, and the accuracy of experimental conditions can be guaranteed.

Description

technical field [0001] The invention relates to the technical field of a microbial oil displacement physical simulation experiment device, in particular to a sand filling model pipe. Background technique [0002] In oil recovery experiments in the petroleum industry, sand-packed model tubes are usually used when conducting indoor physical experiments of microbial oil displacement. During the experiment, it is necessary to detect and analyze the produced fluid along the process and at the outlet, and to monitor the pressure. When conducting the distribution of residual oil saturation along the model tube and the adsorption law of quartz sand, it is required to accurately obtain the oil contained in the model tube along the process. Quartz sand samples of formation water and residual oil. Therefore, the quartz sand in the sand-filled model tube cannot be channeled, which has higher requirements on the roughness of the inner wall surface of the sand-filled model tube. [0003...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the problem in the prior art that the inner wall roughness of the sand-filled model pipe is relatively low and the quartz sand is prone to flow, the present invention provides a sand-filled model pipe

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