Drilling fluids & Maintenance equipment

Functions of drilling fluid

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WELL CONTROL OPERATIONS

Establishing Regular Drilling – Flow Chart

FLOW CHART FOR SIMULATOR DRILLING OPERATION

FLOW CHART FOR SIMULATOR DRILLING OPERATION
FLOW CHART FOR SIMULATOR DRILLING OPERATION

Establishing a Well Control Situation- Flow Chart

FLOW CHART FOR WELL CONTROL OPERATIONS
FLOW CHART FOR WELL CONTROL OPERATIONS

Circulating Out a Kick (to kill the well)

  • Set the stroke counter on both Drillers Console and Remote Choke console to zero.
  • Obtain the Kill Sheet with SIDPP & SICP and all calculated parameters.
  • Also obtain Kill Mud Weight and Maximum Allowable Casing Pressure.
  • Bring up pump at slow circulating rate (0-30 SPM) while maintaining casing pressure constant at the SICP using the remote choke control, continue till at 30 SPM or slow pump rate.
  • Follow the pressure decline on the Kill Sheet by opening and closing the choke at the remote choke console till final circulating pressure is reached, as seen on Drill Pipe Pressure gauge.

At this point, the well should be killed. Flow check reveals DPP = 0, CSGP=0.

Evaluate the Formation-Damage Potential of Drilling Fluids

Solids and the liquid phases of drilling muds invade and interact with reservoir formations. This invasion and interaction changes formation permeability and can prevent fluid flow from the reservoir into the wellbore. Damage caused by mud spurt and drilling-mud filtrate can influence log response. The full-length paper describes a novel method to determine the formationdamage potential of drilling muds by evaluating the erosional characteristics of mudcakes formed by different mud systems.

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