| 摘要 |
<p>A cement slurry mixing station is disclosed. The cement slurry mixing station includes a mixing tank, an inlet port into the mixing tank, a slurry outlet pipe, a recirculating nozzle into the mixing tank at a point below the level of fluid in the mixing tank and adapted to inject the recirculating slurry into the mixing tank, and a recirculating pump in fluid communication with the inlet port, the recirculating nozzle, and the slurry output pipe. The station further includes a mixing transfer valve adapted to selectively direct fluid from the recirculating pump to the recirculating nozzle or the slurry output pipe, a cement injection nozzle into the mixing tank adjacent to the recirculating nozzle and adapted to inject cement into the mixing tank and a diffusion baffle located within the mixing tank. The diffusion baffle is located from 2 to 10 feet from the recirculating nozzle and the cement injection nozzle and includes openings in it that are from 1 to 3 inches. The recirculating nozzle and cement injection nozzle are each directed at the diffusion baffle such that the cement exiting the cement injection nozzle and the recirculating slurry exiting the recirculating nozzle collide at the diffusion baffle.</p> |
