Foam discharging balls for gas well and preparation method thereof

Abstract

The invention relates to the technical field of water drainage for a gas well to increase production in an oil and gas field and provides a foam discharging ball for a gas well and a preparation method thereof. The foam discharging ball for the gas well is prepared from the following raw materials in parts by weight: 50-70 parts of surfactant, 15-25 parts of antiscaling stabilizer and 15-25 parts of foam stabilizer. The foam discharging ball for the gas well is prepared through the following steps of: the first step, heating the desired surfactant so that the surfactant is melton and evaporated until the mass percent moisture content of the surfactant is less than or equal to 5%, and then adding the desired antiscaling stabilizer and the desired foam stabilizer, and then stirring evenly to obtain a mixture. The foam discharging balls provided by the invention are obtained by heating the surfactant so that the surfactant is melton and evaporated, and then adding the antiscaling stabilizer and the foam stabilizer for mixing, kneading through a kneading machine, squeezing into a mold and then demolding. The foam discharging balls obtained are applicable to natural gas wells in different regions at present in China, and are excellent in temperature resistant, salt resistance, anti-freezing and oil separation properties, and bubbling water carrying performance.

Description

technical field [0001] The invention relates to the technical field of gas well drainage and production increase in oil and gas fields, and relates to a bubble volleyball for a gas well and a preparation method thereof. Background technique [0002] For natural gas wells, especially those in the middle and later stages of production, the formation pressure decreases and the liquid-carrying capacity also decreases. Part of the bottom water and heavy hydrocarbons that enter the wellbore will stay at the bottom of the well and produce fluid accumulation. The liquid column pressure of the effusion may reach a static equilibrium with the bottom pressure, which will deteriorate the production conditions, reduce the output, or even stop production due to flooding, so it must be discharged in time. Contents of the invention [0003] The invention provides a bubble volleyball for gas wells and a preparation method thereof, which overcomes the above-mentioned deficiencies in the pri...

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a bubble volleyball for gas wells and its preparation method, which overcomes the deficiencies of the prior art and can effectively solve the problem of natural gas in the middle and later stages of production. The problem that the fluid accumulation at the bottom of the well needs to be discharged in time