Membrane sealing in frog skeletal-muscle fibersSelf-sealing, not found in frog skeletal muscle fibers immersed in Ringer's solution, can be induced by solutions rich in calcium ion...
Research on a new composite sealing material of gas drainage borehole and its sealing performance AbstractAiming at the shortcomings of the traditional sealing materials of borehole for gas suction such as yellow mud and cement-sand grout, which indicated that the traditional sealing materials of borehole are easy to shrink after sealing, the sealing length of borehole is short and the sealing quality is not satisfactory, and the sealing price of the high- water material and polyurethane are also high...
Sealing failure analysis on v-shaped sealing rings of an inserted sealing tool used for multistage fracturing processesThe inserted sealing tool is a critical downhole implement that is used to balance the downhole pressure in multistage fracturing operations and prevent fracturing fluid from overflow and/or backward flow...
Analysis on sealing method and sealing materials of gas drainage... The gas flow law and borehole sealing mechanism are briefly described, the borehole sealing technologies of different materials are analyzed and the requirements are obtained as follows: Sealing materials shall have permeability...
