Description / Application

Bilco's Circulating Tool is used to boost flow rates at Liner tops, which is essential for proper hole cleaning. It also enables an efficient exchange of well bore fluids or spotting of chemical pills. This Tool is always run in the hole with the ports closed and is opened through contact with the Liner top. Depending on the field adjustable configuration setting, once activated, it either closes as soon as contact with the Liner top is lost, or it remains open and is only closed again as long as contact with the Liner top is reestablished.

Operation

The Circulation Tool is dressed for each job with regards to Liner size and PBR ID. A landing nut below the shifting sleeve contacts the Liner top or PBR. Tool activation is achieved by using string weight, only approximately 3000 pounds of down weight is needed to accomplish that. As described above, once activated the tool operates in one of two possible modes. All circulation should be halted while activating or shifting this tool, to prevent seal damage.