Shale gas well sand-water discharge plunger
A technology for shale gas wells and plungers, which is applied in wellbore/well components, production fluids, earthwork drilling and production, etc., and can solve problems such as difficult operation, high cost, and high risk
Active Publication Date: 2019-01-18
YANGTZE UNIVERSITY
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Problems solved by technology
[0003] The purpose of the present invention is to overcome the above-mentioned technical deficiencies, provide a shale gas well sand and water discharge plunger, solve the problems of high cost, difficult operation, large manpower consumption, and pressurized sand and water devices in the prior art. Operation, technical problems such as low safety factor and high risk
Method used
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Embodiment 1
[0036] In order to solve the technical problems such as high cost, difficult operation, large manpower consumption, pressure operation, low safety factor and high risk in the sand water device in the prior art. Embodiment 1 of the present invention provides a shale gas well sand water discharge plunger, such as Figure 1 to Figure 7 As shown, it includes a main shaft 1 , a horizontal blade assembly 2 , a blade opening sleeve 3 , a blade closing sleeve 4 and a longitudinal blade assembly 5 .
[0037] Among them, such as figure 2 and image 3 As shown, the main shaft 1 is hollow, and the inside of the rod body is provided with a first cavity 11 axially communicated with the lower end and a second cavity 12 axially communicated with the upper end.
[0038] Such as figure 1 As shown, the upper end of the main shaft 1 is provided with a horizontal and coaxially arranged circular centering disc 6, and a central shaft sleeve 61 extends downward from the centering disc 6 along its...
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The invention discloses a shale gas well sand-water discharge plunger. The shale gas well sand-water discharge plunger comprises a main shaft, a horizontal fan blade assembly, a fan blade opening shaft sleeve, a fan blade closing shaft sleeve and a vertical fan blade assembly. By using upwelling power of gas in a shale gas well, the vertical fan blade assembly is driven by the upwelling power of the gas to mix sand with water on the bottom of the well and stir the sand and water upwards to the upper side of the horizontal fan blade assembly, then, the plunger collides with the bottom of the shale gas well, so that the fan blade closing shaft sleeve makes the horizontal fan blades form a sealing surface, the shale gas well sand-water discharge plunger is pushed by the gas to integrally moveupwards, and the sand and water brought by the sealing surface formed by the horizontal fan blades are discharged from a sand-water discharge channel at a shale gas well mouth; the plunger collides with the top of the shale gas well, so that the fan blade opening shaft sleeve makes the horizontal fan blades opened again, so repeatedly, the sand and water on the bottom of the shale gas well are discharged upwards.
Description
technical field [0001] The invention relates to the technical field of shale gas production and exploitation, in particular to a plunger device for discharging sand and water in shale gas wells. Background technique [0002] With the changes in the global energy structure, the development of new energy sources such as shale gas is increasing, and a series of problems that follow also need to be solved urgently. During the exploitation of shale gas, some sand and water are blocked in the pipeline, which hinders the accumulation of gas and even blocks the escape of gas, greatly reducing the rate of shale gas collection. Traditional devices cannot solve the problem of water and sand clogging pipelines. Serious problems may even lead to the shutdown of shale gas wells. At present, if mining encounters blockages, coiled tubing sand washing is usually used to solve the problem, but the cost of sand washing is expensive and the cycle is long, and the operation under pressure is no...
Claims
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Patent Timeline
Login to View More IPC IPC(8): E21B43/02E21B43/00
CPCE21B43/00E21B43/02
Inventor 钱玉宝凌振芳严梁柱杨青华刘梓鹏桂志伟鲁郑
Owner YANGTZE UNIVERSITY