A sandstone reservoir engineering well pattern structure

Abstract

The invention discloses a sandstone oil reservoir well network structure, which includes a water injection well and an oil production well, an oil production well is arranged outside the water injection well, and a filter mechanism is fixedly connected to the bottom of the water injection well, and the filter mechanism includes a water outlet pipe, A filter cartridge, a filter chamber, a clamping slot, a block and a filter cartridge, a filter cartridge is fixedly connected to the bottom of the water injection well, and a water outlet pipe is fixedly connected to the bottom of one end of the filter cartridge, and a filter cavity is opened inside the filter cartridge The structure of the present invention is scientific and reasonable, and it is safe and convenient to use. It is equipped with a filter mechanism, which cooperates with the water inlet pipe to transport the water, and at the same time filters the water through the filter cartridge, and stores the impurities in the water in the filter cartridge to avoid contamination in the water. Impurities enter the formation and affect the quality of crude oil in the formation. In addition, through the inclined setting of the outlet pipe, when the outlet pipe pumps out water, a tangential force is formed inside the filter cartridge, which facilitates the rotation of the water inside the filter cartridge and improves the filtering effect.

Description

A well pattern structure for sandstone reservoir engineering technical field [0001] The present invention relates to the technical field of sandstone reservoir engineering, in particular to a sandstone reservoir engineering well pattern structure. Background technique Oil is very precious as an important mineral resource, and in the oil exploitation process, in order to improve the recovery factor of oil, Usually divided into three stages: primary oil recovery, relying on the natural energy of the formation to produce oil with a recovery rate below 30%; secondary oil recovery, using injection Water and gas injection technology can supplement the energy of the reservoir to produce oil, and the recovery factor can be increased to 40-50%; The recovery rate can be increased to about 80-85% by strengthening the recovery of the remaining reserves by means of physics, etc. At present, many oil fields have entered the secondary recovery process. In the oil stage, water flood...

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Problems solved by technology

[0004] The present invention provides a sandstone reservoir engineering well pattern structure, which can effectively solve the problem that the water injection wells proposed in the above background technology do not filter the injected water when injecting water into the oil layer, so that the impurities in the injected water enter the crude oil in the formation. problems affecting the quality of crude oil

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