A program-controlled layered oil recovery device

Abstract

The invention discloses a layering oil production device with a program capable of being regulated on the ground. The device comprises a first packer and a second packer, the upper section of the first packer is a liquid production part, the lower section of the first packer is a liquid supply part, the liquid production part comprises an oil well pump and a well flushing valve body, the outer side of the oil well pump is provided with a pump tail pipe, the inner side of the well flushing valve body is provided with a well flushing valve top connector, a second check valve, a first check valve, a well flushing liquid inlet hole, a ball seat and an oil drainage sleeve in sequence from top to bottom, the ball seat is internally provided with a sealing steel ball, and a reset spring is arranged between the ball seat and a well flushing valve lower connector; the liquid supply part comprises a first zoned string, a light sand type safe connector, the second packer, a second zoned string, aconnection nipple, an oil drainage device, a tail pipe and a plug, the first zoned string is provided with a first hydraulic switch, a first sand screen pipe and a first balance valve in sequence from top to bottom, and the second zoned string is provided with a second hydraulic switch, a second sand screen pipe and a second balance valve in sequence from top to bottom.

Description

technical field [0001] The invention relates to an oil extraction device, in particular to a layered oil extraction device whose program can be regulated on the ground. Background technique [0002] In oilfield production, multi-layered layers are a common phenomenon. In many layers, the oil-water content of the liquid and the ground energy of the formation are different. ) is an ideal method. Among the many layered technologies, "A Layered Oil Production Device" (Patent No. 201310471568.7) is an ideal solution, which overcomes the "short life" of "electricity" (caused by well conditions and large power consumption) ), hydraulic pipelines are cumbersome, and in use, it is indeed simple in structure, convenient and practical in operation, and has achieved good economic benefits, but due to limited conditions, there are still some problems in this process. [0003] The first is that when the formation energy difference is too large, the original pipe string has no signal swi...

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Problems solved by technology

Among the many layered technologies, "A Layered Oil Production Device" (Patent No. 201310471568.7) is an ideal solution, which overcomes the "short life" of "electricity" (caused by well conditions and large power consumption) ), hydraulic pipelines are cumbersome, and in use, the structure is simple, the operation is convenient and practical, and good economic benefits have been achieved. However, due to the limitation of conditions, there are still some problems in this process.

[0003] The first is that when the formation energy difference is too large, the original pipe string has no signal switch to limit the pressure, so some wells have layers that cannot be changed

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