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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…
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,…
Technical Field This invention relates to the field of oil production technology, specifically to an interface-controlled wetting and displacement agent for improving the recovery rate of low-permeability oilfields. Background Technology Low-permeability oilfields refer to oilfields with low reservoir permeability, low…
Technical Field This invention relates to the field of oilfield development technology, specifically to a self-generated carbon dioxide microbubble oil displacement agent, its preparation method, and its uses. Background Technology Currently, foam flooding can effectively expand the swept volume and…
In the oil industry, the method of oil recovery which only relies on various natural energies such as rock expansion, edge water drive, gravity and natural gas expansion is usually called primary oil recovery. The oil production method of increasing…