Horizontal well sand prevention and water control pipe string and oil production increasing method

Abstract

The invention discloses a horizontal well sand prevention and water control pipe string and an oil production increasing method. The pipe string comprises a sand prevention pipe assembly and a plurality of packers; the sand prevention pipe assembly comprises an inner pipe, a supporting particle layer and an outer pipe; and a hydrophobic oleophylic laminating propping agent is arranged in the supporting particle layer. The method comprises the steps that a water plugging experimental section is selected from a horizontal part of a horizontal well and a reservoir around the horizontal part; thesand prevention pipe assembly is prepared; the sand prevention pipe assembly is installed, and a plurality of packing sections are arranged; and oil in the reservoir is gradually conveyed out, and theoutput of water is controlled. According to the horizontal well sand prevention and water control pipe string and the oil production increasing method, after an oil layer discharges water, an instrument or a tool does not need to be lowered to independently find and control water, the oil layer can be effectively prevented from producing water and allowing oil to pass through the hydrophobic oleophylic laminating propping agent, the productivity is not affected, manual intervention is not needed, and operation procedures are reduced. The method not only can prevent sand, but also can controlwater and convey oil; and the method is simple and effective and has remarkable economic benefits and social benefits.

Description

technical field [0001] The invention relates to oil and gas sand control and water control technology for a large oil and gas processing system, in particular to a horizontal well sand control and water control pipe string and an oil increasing method thereof. Background technique [0002] During the development of Bohai Oilfield, the water cut rises rapidly after the production well is put into production, and with the increase of liquid production rate, the unevenness of liquid production intensity in the entire horizontal well section increases, which easily leads to the problem of early water coning. With the lengthening of the horizontal section of the horizontal well, the problem of water coning in the edge water and the bottom becomes more prominent, and the water cut of some sand producing wells reaches more than 90% at the initial stage of production, resulting in uneven production of the target reservoir, rapid rise of water cut, and short stable production period. ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a horizontal well sand control water control pipe string and its oil increasing method, which is used to solve the problem of complicated construction, high implementation cost and rapid increase of water content caused by the need for additional equipment or measures in the existing water control methods , high water content in oil production, etc.

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