Foam scrubbing agent as well as preparation method and application thereof

Abstract

The invention discloses a foam scrubbing agent as well as a preparation method and application thereof. The foam scrubbing agent comprises the following components: an anionic surfactant, a zwitterionic surfactant, a nano active agent material and organic alkali, the nano active agent material is obtained by polymerizing raw materials containing a double-bond modified lamellar nano material, a hydrophilic monomer and a hydrophobic monomer; the hydrophilic monomer is selected from at least one of anhydride compounds; the hydrophobic monomer is selected from at least one of long-chain alkyl allyl quaternary ammonium salts. The foam scrubbing agent contains the nano active agent material and has the effect of reducing surface and interfacial tension, and meanwhile, the nano active agent material can be attached to the surface of foam, so that the stability of the foam is enhanced, the half-life period of the foam is greatly prolonged, and the liquid carrying capacity of the foam scrubbing agent is improved.

Description

technical field [0001] The application relates to a foaming agent and its preparation method and application, belonging to the technical field of oil and gas field development. Background technique [0002] With the deepening of oil and gas field development, most oil fields have entered the middle and late stages of development. Due to the continuous decline of formation pressure, formation water flows into the near-well zone or wellbore with natural gas, and accumulates there, resulting in production reduction or even stop blowout of gas wells. In view of this situation, drainage and gas recovery technology must be launched in time to solve the problem of gas well drainage. Among many drainage gas recovery technologies, foam drainage gas recovery technology is widely used for its advantages of simple supporting equipment, convenient management and construction, and small investment. The performance of the foam drainage agent has become the key to the foam drainage and gas...

AI Technical Summary

Problems solved by technology

[0003] Domestic existing foam discharge agents are generally suitable for formation conditions below 90°C and salinity less than 100,000ppm. With the continuous increase of formation temperature and salinity, its foaming and foam stabilization ability will be greatly reduced, and its liquid carrying capacity will decrease, thus hindering Application of foam drainage gas recovery technology in high temperature and high salt gas production wells

At present, the vast majority of foaming agents on the market are compounded with surfactants, but there are few reports on the use of nanomaterials in foaming agents

Images