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  • Causes of oil and gas formation damage during drilling

    Release time: 2015/10/26 manufacturers, price: drilling fluid

    During the drilling process, there are many reasons for the damage of the drilling fluid oil and gas layer. When drilling the oil and gas layer, under the action of positive pressure difference and capillary force, the solid phase of the drilling fluid enters the oil and gas layer and causes pore throat blockage, and its liquid phase enters. Oil and gas layers interact with rocks and fluids in oil and gas layers, destroying the original balance of oil and gas layers, and thus induce oil and gas ...