31results about How to "Strong experimental operability" patented technology

The invention provides a method for screening imbibition agents of low-permeability reservoir. The screening method comprises performing oil-sand imbibition effect testing on to-be screened low-permeability reservoir imbibition agents, so as to obtain first screening samples; performing adhesion-work reduction value testing on the first screening samples, and selecting the first screening samples with the adhesion-work reduction value larger than zero, so as to obtain second screening samples; performing emulsification stability and viscosity testing on the second screening samples, so as to obtain third screening samples; performing seepage-force testing on the third screening samples, and selecting the third screening samples with the seepage-forge value being 2 times or more larger than the seepage force value of simulated water or low-permeability reservoir produced water, so as to obtain an imbibition agent suitable for low-permeability reservoir; and finally finishing screening on the low-permeability reservoir imbibition agent after the imbibition agent is verified to be qualified through a rock core experiment. Through the above provided screening method, the obtained imbibition agent is applicable to common low-permeability reservoir, extra-low permeability reservoir and ultra-low permeability reservoir.

The invention relates to a mathematics probability demonstration device, which effectively solves the problems of large workload and bigger artificial error in the existing needle throwing experimentdevice. The mathematics probability demonstration device is characterized in that the mathematics probability demonstration device comprises a simulation needle bar, a guide device and a needle throwing device, wherein the needle throwing device comprises a fixed casing; the outer side of the fixed casing is connected with fan blades; a cavity between every two fan blades forms a needle throwing cavity; both sides of each of the four needle throwing cavities are respectively sealed, and are integrally connected with the fixed casing; a first needle throwing hole is formed in the first needle throwing cavity and vertically faces the center of circle; a second needle throwing hole is formed in the second needle throwing cavity and slantwise faces the center of circle; a fourth needle throwing hole is formed in the fourth needle throwing cavity and slantwise faces the center of circle; the first needle throwing hole, the second needle throwing hole and the fourth needle throwing hole aremutually communicated; a blocking plate is arranged at an opening of the fourth needle throwing cavity, and the fourth needle throwing cavity is not sealed by the blocking plate; the outer wall of thefixed casing is connected with a first drive motor through a first rotary shaft; a floor box is arranged, and the experiment operability is stronger.

The invention provides aminated fluorinated graphene and a preparation method thereof. A synthesis method disclosed by the invention does not require expensive raw materials, a complicated technologyand the like. Equipment and a technological process are relatively simple, the experience operability is strong, the preparation cost is low, and the period is short; in addition, the purity of an obtained product is high, and good synthesis basis is provided for further application of the aminated fluorinated graphene. The aminated fluorinated graphene in dozen-gram scale can be prepared in one time.