Abstract: A method for preparing heat-conductive cement slurry for well cementation includes the following steps: S1, uniformly mixing sodium 1-butanesulfonate, sodium dodecyl diphenyl ether disulfonate and polyvinylpyrrolidone to obtain an admixture; S2, dissolving the admixture in deionized water and stirring to obtain a dispersant solution; S3, adding graphite to the dispersant solution and stirring to obtain a graphite dispersion; S4, stirring cement and deionized water in a slurry cup to obtain cement slurry; and S5, mixing and stirring the graphite dispersion and the cement slurry to obtain the heat-conductive cement slurry. The heat-conductive cement slurry can effectively improve the heat conductivity coefficient of set cement, and significantly improve the heat conductivity of the set cement, and has a broad market application prospect.

Abstract: Embodiments of the present invention provide a touch-based method and apparatus for sending information. The method includes: obtaining input information, which is input by a source user through an information input area preset on a display screen; and when preset gesture information is received, sending the input information to a target user corresponding to the gesture information. The embodiments of the present invention improve the existing information sending manner while inputting, and compared with the prior art, when sending information, require no touch or tap operation to select a recipient and send button and the like, but instead, send information quickly by using a preset convenient gesture, thereby improving performance of sending information instantly. In addition, because the preset gesture is convenient for inputting, user experience may be improved when a user sends information on a touch apparatus.