Impact type coal bed gas two-phase flow bubble sensor based on nano material

Abstract

The invention provides an impact type coal bed gas two-phase flow bubble sensor based on a nano material. The device comprises a fixed bracket, a rotary bracket, an impact sheet and a charge tester, wherein the fixed bracket comprises a base, side plates and a cross beam; the upper ends of the side plates are connected to the cross beam, the lower ends of the side plates are connected to the base,the rotary bracket is in a Z shape, the rotary bracket comprises a bent rod and a bottom plate; the upper end of the bent rod is connected with the impact sheet; the lower end of the bent rod is connected with the bottom plate, the middle of the bent rod is rotationally connected with one end of the cross beam; the other end of the cross beam is connected with a spring extending downwards; the lower end of the spring is connected with the bottom plate, the bottom plate is arranged between the base and the cross beam, an upper nano material layer is arranged on the lower surface of the bottomplate, a lower nano material layer is arranged on the upper surface of the base, the upper nano material layer and the lower nano material layer are oppositely arranged up and down and are connected with a charge tester, and the charge tester detects the frequency of triboelectricity generated between the upper nano material layer and the lower nano material layer. The method has the advantages that the flow pattern of the two-phase flow is accurately judged, the size is small, and the method adapts to the drilling working condition environment.

Description

technical field [0001] The invention relates to the technical field of geological drilling instruments and meters, in particular to an impact type coalbed gas two-phase flow bubble sensor based on nanometer materials. Background technique [0002] In recent years, with the acceleration of my country's industrialization, urbanization and agricultural modernization, the contradiction between oil and gas supply and demand in my country has become increasingly prominent, and the shortage of energy has seriously affected economic development, social stability and national security, and today's international energy resource market is highly competitive , It is more difficult to rely on the international market. Therefore, accelerating the breakthrough of energy exploration, gaining a foothold in the country, and enhancing the guarantee capacity of energy resources have become major strategic issues for my country's economic and social development. Coalbed methane, as a conventional...

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Problems solved by technology

At the present stage, there are few studies on the determination of bubble frequency and two-phase flow pattern in the two-phase flow measurement in coalbed methane production wells, and the relative size of the production wellbore is small, and most bubble sensors are not suitable for the downhole environment, so it is urgent to develop A two-phase flow air bubble sensor with high precision, small size, and suitable for drilling wellbore environment requirements

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