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The Bohai Sea has become one of the important bases for offshore oil and gas development in my country. The Bohai Oilfield accounts for about 70% of the total offshore oilfield production and is the largest offshore oilfield in my…
Petroleum, as the lifeblood of industry, is hailed as “black gold” and plays a vital role in national and social development. With the continuous progress and development of China’s economy and society, the demand for crude oil is constantly rising.…
Once conventional oil reservoirs are depleted, reservoir enhancement technologies come into play to extract further oil. Similar to wringing out a wet sponge, reservoir enhancement uses methods such as heating, gas injection, or chemical treatment to alter the viscosity of…
Technical Field This application relates to the field of oilfield chemical technology, and more specifically, to a fracturing displacement agent and its preparation process. Background Technology Against the backdrop of continuously growing global energy demand, low-permeability reservoirs, tight reservoirs, and…
Technical Field This invention pertains to oilfield chemicals, and in particular relates to a method for preparing a fatty amine polyester ether surfactant and its composite ionic oil displacement agent. Background Technology Ternary composite flooding systems ( polymer + surfactant…
Cationic surfactants are primarily nitrogen-containing organic amine derivatives. Because the nitrogen atoms in their molecules contain lone pairs of electrons, they can bond with hydrogen atoms in acid molecules via hydrogen bonds, giving the amino group a positive charge. Therefore,…
Technical Field This invention belongs to the field of oilfield oil recovery additives technology, specifically relating to a polycyclic anti-sulfur ion type polyacrylamide oil displacement agent and its preparation method. Background Technology In tertiary oil recovery, polymer flooding is a…
in high-temperature, high-salinity oil reservoirs requires surfactants and polymers to possess excellent temperature and salt resistance. Therefore, alcohol ether carboxylates (AECs) with nonionic-anionic hydrophilic complex groups have broad application prospects and are widely used as oilfield emulsifiers, viscosity reducers, solubilizers,…
The mechanism of crude oil demulsifiers is a phase transfer-reverse deformation mechanism. Upon addition of the demulsifier, a phase transition occurs, generating a surfactant of the opposite type to the emulsion formed by the emulsifier (reverse demulsifier). This type of…
The introduction of salt-based ternary peptides into the incoming liquid caused difficulties in handling the new 3-1 solution. While the problem of salt-based ternary peptides and polymer-based peptides was solved by introducing a patent, the dosage was still relatively large.…