Mud Cooler and Strainer

What is Mud Cooler?

A mud cooler is a specialized equipment used to reduce the temperature of drilling mud, such as oil-based and water-based mud, which increases during the drilling process. Its essential function is to keep the mud stable, protect equipment, and ensure successful drilling, especially in high-temperature environments

Why we need Mud Cooler?

Reduction of borehole stability and well control
Damage downhole motors and electronics instrumentation
Shorter effective life of bits and other downhole tools
Decrease in transportation of cutting velocity
Increased drillpipe corrosion
And cause rubber wash out (rubber piston in the mud pump and BOP system)

SCHEMATIC

The Mud Cooler System

Heated drilling fluid returns from the well to shaker tank
Hot fluid from intermediate tanks is pumped through The Mud Cooler
The cooled fluid is returned to the active tank and returned down to the hole

Comparison of Circulation Mud : CCM vs CMC

This illustration demonstrates CMC effect in reducing fluid temperature. The right hand side of the curve shows depth (Feet) ; and The left hand side shows temperature in (^oC) to string. Bottom hole fluid temperature is reduces from 120^o C to 100^o C with CMC. This temperature is steering downhole tools, mud motors, and other electronics must survive which mean that mud coolers are necessary for drilling.

COOLING SYSTEM

Tubing (240 ea)

Dissipation Process : reject the heat to around

Water

Spray water from the tank through nozzle (44 ea)

Exhaust Fan/Blower (3 ea)

Release hot air out of mud cooler

MUD COOLER SPECIFICATION

Mud Cooler Unit

Spec :

-Tank capacity : 2700 litre
-1,0” galvanish tubing; 240 ea
-Nozzle Water Spray : 44 ea
-Butterfly Valve and Ball Valve System
-Temp in/out and Pressure in/out Indication : 4 ea
-3 ea Exhaust Fan; 10 blades/1 ea
-1 ea Water pump;
-Total Power Require : 125 KVA ( 3 Blower, 1 Water Pump, 1 Centrifugal Pump)
-Explosion Proof

Dimension :

Length : 7,5 m
Width : 2,5 m
Height : 3,0 m
Gross Weight : 1400 Kg

Strainer Unit

Spec :

-2 filter System; Screen 5 ea
-Butterfly Valve System
-Pressure Gauge Indication; 1 ea

Dimension :

Length : 2,5 m
Width : 1,6 m
Height : 1,2 m
Gross Weight : 400 Kg

Centrifugal Pump Unit

Spec :

-Emergency Shut Down Panel
-Centrifugal Pump Panel
-Pump Rate : 600 GPM

Dimension :

Length : 2,0 m
Width : 0,6 m
Height : 1,5 m
Gross Weight : 300 Kg

EXPERIENCE LIST

CNOOC

RIG Name : HYSY – 937
Well Name : Mila 01, Mila 02, Mila 03, Kartini 09, Asti 01, Asti 02, Rama 03, Yani 06
Contract Duration : March 2013 – January 2015

Location : North Java Sea – CNOOC Ses Ltd.
Well : Mila A-03, Mila A-01

EXPERIENCE LIST

VICO

RIG Name : EMR – 001
Well Name : Semberah 121, Semberah 125, Badak 269,
Contract Duration : April 2015 – October 2015 (On Job)

Location : Muara Badak, East Kalimantan – PT. Vico Indonesia
Well : Semberah 121, Semberah 125