逆循环椭圆力激振自同步钻井液振动筛研制

Development and application of a self-synchronization and balanced elliptical motion shaleshaker excited by backward elliptical vibrating forces

利用自同步原理,采用逆循环椭圆力激振,设计了一种自同步平衡椭圆运动钻井液振动筛。该振动筛采用较小振幅,选用特制弹性元件,并设有多功能缓冲箱、筛网限位板、防短路挡板、防溅挡板等专用机构。现场应用表明,逆循环椭圆力激振可以有效诱导颗粒团聚,使筛面有自清洁作用,减少筛糊和颗粒透筛现象,明显改善固控质量,处理量比同规格直线振动筛高30%以上。该筛具有设计新颖、运转平稳、椭圆精度高、处理量大、排屑干度高、筛网使用寿命长、噪音低等优点,具有较大的推广应用价值。

Employing backward elliptical vibrating forces, a new type of a self-synchronization and balanced elliptical motionshale shaker is developed. This shale shaker employs the principle of self-synchronization and the concept of small amplitude and highfrequency. The optimum balanced elliptical motion is obtained. And the shale shaker is characterized by the special composite spring,the multifunctional buffering box, the height limit plate of screen end, the baffle board to prevent short circuit and the front splash shield.Field application shows that using the backward elliptical vibrating forces more particle clusters can be formed, and the screen can becleaned by the particle cluster. So screen blinding and particle penetration can be reduced. Compared with linear shakers with the samesize the flow capacity could be increased by more than 30%. And the shale shaker can greatly improve the quality of solid control withits steady running, more exactly balanced elliptical motion, large flow capacity, more dry cuttings, long screen life and low noise.