多功能水泥浆体系测窜仪的研制

Research on Multifunction Channeling Measured Instrument of Cementing Slurry System

为评价水泥浆体系的防窜能力,进行了多功能水泥浆体系测窜仪的研制。首先进行了窜槽原理分析,气/液窜与环空水泥浆的液柱压力变化有关,水泥浆环空液柱压力可以视为静胶凝强度发展的函数;基于这一原理,研制出多功能测窜仪,该仪器采用扭矩法测静胶凝强度;给出防窜性能测试方法,并借助超声波强度仪对多功能水泥浆体系测窜仪工作的可靠性进行检验;最后以常用密度水泥浆进行实例验证,结果表明,多功能水泥浆体系测窜仪可用于水泥浆体系防窜性能评价。

To evaluate the anti-channeling ability of cement slurry system,a multifunction channeling measured instrument is developed.The channeling principle is analyzed that gas or liquid channeling is due to the fluid column pressure of annular slurry,and the fluid column pressure can be regarded as a function of the static gel strength development.This instrument measures the static gel strength with torque method,and the measuring reliability of that is tested with the ultrasonic intensity instrument.Moreover,through the test of normal density cement slurry,the result show that this instrument can be used for the channeling evaluation of cement slurry system.