Abstract: A composition and use thereof are disclosed herein. The composition comprises at least two selected from the group of amphiphilic block copolymer, polyurethane and acidic ionic compound. Also an oil-based drilling fluid comprising the composition and a method improving shearing force of oil-based drilling fluid are disclosed. The composition disclosed herewith can raise the shearing force of oil-based drilling fluid.

Abstract: The disclosure discloses a method for information acquisition of a voice mailbox system. The method includes: when message information sent from a user of a communication sending end is received, an information characteristic of the message information is determined; whether a pre-stored information characteristic consistent with the determined information characteristic exists or not is analyzed; and when there exists the pre-stored information characteristic consistent with the determined information characteristic, information corresponding to the determined information characteristic is acquired from an information library, and the acquired information is pushed to a user of a communication receiving end. The disclosure also discloses a device for information acquisition of a voice mailbox system. Reasonable and effective analysis over the message information in the information library of the voice mailbox system is implemented.

Abstract: A composition and use thereof are disclosed herein. The composition comprises at least two selected from the group of amphiphilic block copolymer, polyurethane and acidic ionic compound. Also an oil-based drilling fluid comprising the composition and a method improving shearing force of oil-based drilling fluid are disclosed. The composition disclosed herewith can raise the shearing force of oil-based drilling fluid.

Abstract: A copolymer and preparation method and application thereof are disclosed. The copolymer is random copolymer obtained from monomers consisting of acrylamide, acrylic acid, alkenyl sulfonate, 2-acrylamido-dodecyl sulfonate, p-styrene sulfonate or isoprene sulfonate and so on. The copolymer of present invention can be used as fluid loss additive and has good fluid loss properties, which would not make the drilling fluid thicken at high temperature of 200° C. and high salt conditions of saturated brine. It has a medium-pressure fluid loss after aging and rolling for 16 h at high temperature of 200° C., as measured in accordance with the American Petroleum Institute Standard Test at room temperature, and has good properties of high temperature-resisting and salt-resisting.

Abstract: A copolymer and preparation method and application thereof are disclosed. The copolymer is random copolymer obtained from monomers consisting of acrylamide, acrylic acid, alkenyl sulfonate, 2-acrylamido-dodecyl sulfonate, p-styrene sulfonate or isoprene sulfonate and so on. The copolymer of present invention can be used as fluid loss additive and has good fluid loss properties, which would not make the drilling fluid thicken at high temperature of 200° C. and high salt conditions of saturated brine. It has a medium-pressure fluid loss after aging and rolling for 16 h at high temperature of 200° C., as measured in accordance with the American Petroleum Institute Standard Test at room temperature, and has good properties of high temperature-resisting and salt-resisting.

Abstract: A telephone notification method and system, a signaling monitoring unit and a server are disclosed. The telephone notification method comprises that: acquiring a hang-up signal of a target user terminal from a signaling network and then sending a notification message to a server; and after receiving the notification message, the server calls the target user terminal when determining there is a telephone notification task for the target user terminal. According to the embodiments of the present invention, a server can timely initiate a telephone notification for the target user, and the success rate of the telephone notification can be increased.