67results about How to "Efficient Foaming" patented technology

The invention discloses a salt synergistic anti-temperature and anti-salt foam system. The system comprises the following components in percentage by weight: 0.05-0.5% of foaming agent, 0.05-0.2% of foam stabilizer and the balance of formation water or simulated formation water. The foaming agent is formed by compounding a nonionic surfactant and an anionic surfactant according to the mass ratio of (6: 1)-(9:1). The foam stabilizer is one or more of xanthan gum, hydroxyethyl cellulose and polyvinyl alcohol. The salt synergistic anti-temperature and anti-salt foam system disclosed by the invention has strong anti-temperature, anti-salt and anti-calcium and magnesium capabilities and can realize good foaming under the conditions that the temperature is 90 DEG C, the degree of mineralization is 20*10<4>mg / L and the concentration of calcium and magnesium ions is 1*10<4>mg / L, the foam stability is increased along with the increases in the degree of mineralization, the nonionic surfactant and the anionic surfactant have a good synergistic effect, and the salt synergistic anti-temperature and anti-salt foam system can be directly used for ultra-high temperature and ultra-high salt oil deposits with not high foam strength requirements, is easy to obtain raw materials and has good environmental compatibility.

The invention discloses a multifunctional synergist for acidizing and fracturing. The multifunctional synergist comprises raw materials in pars by weight as follows: 30-50 parts of a functional macromolecular compound, 2-5 parts of a special surfactant, 6-10 parts of a foaming agent, 3-7 parts of a solvent and 28-59 parts of water. A preparation method of the multifunctional synergist for acidizing and fracturing comprises the steps of preparation of the functional macromolecular compound, weighing and mixing. According to the multifunctional synergist for acidizing and fracturing, the performance of additives in acid liquor and fracturing fluid is regulated, so that the compatibility of the additives is strengthened, the fracturing liquid is better in rheological property, wettability and gel-breaking residue form, and the damage of the fracturing liquid is reduced; the synergist has good functions of sterilization, discharge assistance, foaming and clay swelling prevention; the preparation method for the multifunctional synergist for acidizing and fracturing has the advantages of simplicity in preparation, convenience in preparation, low cost and the like.