Method for evaluating sand prevention tube performance and special equipment thereof

Abstract

The invention discloses a method for evaluating the performance of a sand control pipe in the house and a special device thereof. The device comprises a sealed high-pressure kettle body, a shunt net and a cylindrical support frame; the shunt net is cylindrical and embedded and sleeved in the high-pressure kettle body; the cylindrical support frame is positioned at the axle center of the high-pressure kettle body; the lower ends of the shunt net and the cylindrical support frame are respectively connected with the bottom surface of the high-pressure kettle body; the side wall of the high-pressure kettle body is provided with at least one oil inlet; the lower bottom surface of the high-pressure kettle body is provided with an oil outlet; and the oil outlet is positioned at the inner side ofthe side wall of the cylindrical support frame. The method utilizes the device for evaluating the performance of the sand control pipe in the house to evaluate the performance of the sand control pipe to be tested. The device can simulate the stratum characteristics of oil fields, and carry out testing to evaluate the rule of sand production in a radial flow mode under the confining pressure condition so as to lead the characteristics of sand production of the stratum to meet the conditions of stratum better. The evaluating method has low cost, can replace expensive field test, is convenient to obtain the rule, is preferably suitable for types of the sand control pipes under different stratum conditions, optimizes sand control parameters and guides field production.

Description

technical field [0001] The invention relates to a method for evaluating the performance of a sand control pipe and a special device thereof. Background technique [0002] In sandstone reservoirs, due to the loose structure of the formation itself and the forced production method of high-temperature and high-pressure steam injection, sand production is accompanied by varying degrees during oilfield development. With the continuation of development, sand production wells are increasing. Sand production is also becoming more complex and intensified. Sand production in oil wells shortens the production cycle of oil wells, greatly reduces oil well production, and even causes oil wells to be shut down and scrapped, which seriously restricts the full potential of oil wells. Therefore, for sand-producing oil reservoirs, sand control is an indispensable part of oil and gas reservoir exploitation, and plays an important role in the stable exploitation of crude oil. [0003] There ar...

AI Technical Summary

Problems solved by technology

The misunderstanding of the current selection method is: only pay attention to the effect of sand control and ignore the economic considerations, that is, only consider economic and technical factors, focus on blocking sand, and do not consider the size of production capacity, sand control cost and economic effect after sand control

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