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- W2377315492 abstract "NW solids free aerated drilling fluid is developed to suit for the development of low pressure and low permeability gas reservoirs combining with the use of under-balanced drilling, and to maximize the efficient of reservoir protection. This drilling fluid is free of solids, thus avoids the risk of solid fines blocking the formation porosity; it has strong inhibition, and can minimize the invasion of drilling fluid filtrate into the formation, i. e. , reduce water blocking damage and protect the communication between the formation pores. The light weight cationic ions has the characteristic of priority adsorption, which forming layer of cationic protective film; the hydrophobic groups in its molecular structure can prevent the invasion of water molecules thus reduce the water blocking damage caused by natural seepage effect in the low-pressured and low permeable formation. Little filtration is detected for the drilling fluid, which is only about 10mL; and it has strong inhibition, which minimizes its influence on permeability, thus protects the formation and enhances oil recovery. This drilling fluid meets the requirements of aerated drilling technology. Furthermore, its density is continuously adjustable, it can effectively drop hydraulic column pressure, it can form group-foam structure, and has such features as group plugging, hydrophobic shielding and special rheology, and it can also prevent lost circulation and protect gas reservoir. This drilling fluid is easy for field use and maintenance, and can perfectly meet the requirements of under-balanced drilling." @default.
- W2377315492 created "2016-06-24" @default.
- W2377315492 creator A5091670802 @default.
- W2377315492 date "2002-01-01" @default.
- W2377315492 modified "2023-09-23" @default.
- W2377315492 title "Study on NW solids free aerated drilling fluid for under-balanced drilling" @default.
- W2377315492 hasPublicationYear "2002" @default.
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