×

DRILLING-FLUID CONTROL-MONITORING APPARATUS

  • US 3,726,136 A
  • Filed: 12/17/1970
  • Issued: 04/10/1973
  • Est. Priority Date: 12/17/1970
  • Status: Expired due to Term
First Claim
Patent Images

1. A control-monitoring apparatus adapted to cooperate in a drilling-fluid circulation system, comprising:

  • a fluid-pit for retaining a volume of drilling-fluid;

    a pump connected between the fluid-pit means and the borehole pumping drilling-fluid from the fluid-pit means into the borehole in one position thereof;

    a return flow pipeline connected between the borehole and the fluid-pit means, some of the drilling-fluid being returned to the fluid-pit means from the borehole via the return flow pipeline;

    level indicating means disposed in the fluid-pit and being constructed and adapted to sense the level of the drillingfluid in the fluid-pit and to provide an output level-signal indicative of the sensed drilling-fluid level;

    return flow indicator means connected to the return flow pipeline and being constructed and adapted to indicate the flow of drilling-fluid through the return flow pipeline, and to provide an output return flow-signal indicative of the sensed flow of drilling-fluid; and

    a drilling-fluid control indication apparatus, comprising;

    a first recorder means, comprising;

    a first recorder drive means constructed and adapted to receive the output level-signal from the level indicating means and to provide an output drive-signal in response thereto;

    a pit indicating means constructed and adapted to receive the output drive-signal from the first recorder drive means and to provide an output level indication-signal indicative of the drilling-fluid level in the fluid-pit; and

    a second recorder means, comprising;

    a second recorder drive means constructed and adapted to receive the output return flow-signal from the return flow indicator means and to provide an output drive-signal in response thereto; and

    a return-flow indicating means constructed and adapted to Receive the output drive-signal from the second recorder drive means and to provide an output flow indication-signal indicative of the drilling-fluid flow through the return flow pipeline.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×