Tag Salt resistance

Amphiphilic oil polymers containing hydrophobic long-chain alkanes and hydrophilic polyether long-chain monomer structural units

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…

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[Oil Displacement Agents] Preparation Methods of Fatty Amine Polyester Ether Surfactants and Their Composite Ionic Oil Displacement Agents

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…

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Synthesis method of alcohol ether carboxylates for oilfield enhanced oil recovery

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,…

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Water-locking agents: a key technological support for solving the water-locking problem in oil and gas extraction.

I. Water Locking: A “Hidden Obstacle” in Oil and Gas Extraction  During oil and gas field development, especially in the exploitation of low-permeability and ultra-low-permeability oil and gas reservoirs, as well as unconventional oil and gas resources such as shale gas…

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Oilfield decongestant technology system, classification and mainstream type application strategy

In the mid-to-late stages of oilfield development, reservoir blockage has become one of the core issues restricting production capacity. Whether in conventional sandstone reservoirs or unconventional tight reservoirs, during long-term water injection development, fracturing, or production operations, factors such as…

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