Antifreeze foaming agent and preparation method thereof

Abstract

The invention discloses an antifreeze foaming agent and a preparation method thereof. The antifreeze foaming agent comprises the following components in percentage by mass: 33% of ethylene glycol, 2-4% of glycerin, 2-4% of DMF, 1.5-2.0% of triethanolamine, 0.08-0.12% of sodium carboxymethylcellulose, 0.1-0.2% of a linear tetramer of c-NMF, 0.1-0.2% of a metal organic framework material MOF-5, 24-27% of a PEO-PPO-PEO triblock copolymer, 5-7% of polyoxyethylene castor oil and the balance of deionized water. The antifreeze foaming agent reduces the icing possibility of a foaming agent during use.

Description

technical field [0001] The invention relates to an antifreeze foaming agent and a preparation method thereof. Background technique [0002] When a gas well is in normal production, the liquid is carried by the gas to the surface in the form of droplets, the gas is in a continuous phase and the liquid is in a discontinuous phase, and when the flow rate of the gas phase is too low to provide enough energy to make the liquid in the wellbore flow out of the wellhead continuously , the liquid will flow in the opposite direction to the gas flow and accumulate at the bottom of the well, and there will be fluid accumulation in the gas well and gradually accumulate. Foam drainage gas recovery technology is a production-aiding technology researched for the development of water-producing gas fields. The main principle of this technology is to inject foaming agent (surfactant) Full contact with the effusion produces a large amount of relatively stable low-density water-containing foam,...

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Problems solved by technology

[0003] However, the freezing point of water is 0°C. When the aqueous solution of surfactant is poured into the gas well, due to the low underground temperature, the aqueous solution may freeze, resulting in the failure of normal foaming.

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