Underground drainage and gas production robot with four-connecting-rod supporting mechanism

Abstract

The invention discloses an underground water drainage and gas production robot with a four-connecting-rod supporting mechanism, which is used for a water drainage and gas production process and belongs to underground water drainage and gas production intelligent tools. A variable-diameter rubber barrel is arranged on the outer side of a four-connecting-rod supporting mechanism, a piston cylinder barrel is communicated with the outside, flow guiding and pressure guiding holes are formed in the two sides of the piston cylinder barrel, fluid enters the piston cylinder barrel through the flow guiding and pressure guiding holes, and the flow guiding and pressure guiding holes in the two sides of the piston cylinder barrel can be switched between communication and blocking through the stroke setting of a piston push rod; the piston push rod sleeve is pushed to descend and ascend through the pressure of fluid entering the piston cylinder barrel, the piston push rod can be driven to stretch out and draw back, and therefore the diameter of the variable-diameter rubber barrel can be changed due to supporting and contracting of the four-connecting-rod supporting mechanism, and accurate and intelligent control over diameter changing of the variable-diameter rubber barrel is achieved. The variable-diameter rubber barrel forms a flexible and adjustable sealing surface under the supporting and contracting states of the four-connecting-rod supporting mechanism, and the four-connecting-rod supporting mechanism is stable and reliable in work, high in adaptive capacity and better in sealing performance.

Description

technical field [0001] The patent of the invention belongs to an intelligent tool for underground drainage and gas production, which is used for the drainage gas production process, and specifically relates to an intelligent underground drainage and gas production robot. Background technique [0002] Low-pressure and low-yield gas wells often experience fluid accumulation and production reduction due to insufficient formation energy and poor wellbore liquid-carrying capacity. In severe cases, water-flooding may even stop production, affecting the normal production of gas wells. Drainage gas recovery technology is required. At present, the conventional drainage and gas production processes mainly include bubble discharge, plunger, liquid nitrogen lift, mechanical pumping, electric pump, etc. Among them, the plunger gas lift process has the advantage of high liquid lifting efficiency, and is equipped with a remote intelligent management and control operation system. It is wide...

AI Technical Summary

Problems solved by technology

In actual working conditions, the pipe wall is very likely to be partially worn, deformed, corroded, and scaled. If the outer diameter of the plunger cannot be automatically adjusted to better adapt to the on-site working conditions, the equipment will fail to operate or be damaged. It is difficult to achieve high-efficiency production, and production accidents may occur in severe cases

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