Drilling Lab for petroleum engineers
Drilling Fluids
Physical Properties of Mud
PETE 101
Introduction to Petroleum Engineering
Submitted to:
Dr. Shirish Patil
Petroleum Engineering Department
University of Alaska Fairbanks
By:
Me
Abstract
Drilling fluid (mud) is a mixture of water or oil, or emulsion base , clay, weighing material and some chemicals. The combination of mud may vary according to the changes in formation. Drilling fluid plays essential role in drilling process. For this experiment we used a 2000 mL sample of mud with 12 lb/gal density where 6 lb/bbl bentonite. This experiment was performed by using the Marsh Funnel method, pH meter and strips with weighing material barite to determine drilling mud characterizations. Introduction
Drilling mud is a chemical mixture used while drilling a well for several purposes. The mud is circulated down the drill pipe, out through the drill bit, across the rock face being drilled, then back to the surface carrying debris from the bottom of the well. The mud is then cleaned, tested, and re-used in the well on a continuous basis. Drilling mud has several important functions:
1. Assists in making hole by:
a) Removal of cuttings, the removal of cuttings from the face of the well bore is still one of the most important functions of drilling fluids. Fluid flowing from the bit nozzles exerts a jetting action that keeps the face of the hole and edge of the bit clear of cuttings.
b) Power transmission to bit nozzles or turbines;
c) Cooling and lubrication of bit and drill string, considerable heat is generated by friction in the bit and where drill string is in contact-with the formation or casing. There is little chance for this heat to be conducted away by the formation; therefore, the circulating fluid must remove it. 2. Assists in hole preservation by:
a) Support of bore hole wall;
b) Containment of formation fluids;
3. Supports the weight of pipe and casing;
4. Serves as a medium for formation
Physical Properties of Mud
PETE 101
Introduction to Petroleum Engineering
Submitted to:
Dr. Shirish Patil
Petroleum Engineering Department
University of Alaska Fairbanks
By:
Me
Abstract
Drilling fluid (mud) is a mixture of water or oil, or emulsion base , clay, weighing material and some chemicals. The combination of mud may vary according to the changes in formation. Drilling fluid plays essential role in drilling process. For this experiment we used a 2000 mL sample of mud with 12 lb/gal density where 6 lb/bbl bentonite. This experiment was performed by using the Marsh Funnel method, pH meter and strips with weighing material barite to determine drilling mud characterizations. Introduction
Drilling mud is a chemical mixture used while drilling a well for several purposes. The mud is circulated down the drill pipe, out through the drill bit, across the rock face being drilled, then back to the surface carrying debris from the bottom of the well. The mud is then cleaned, tested, and re-used in the well on a continuous basis. Drilling mud has several important functions:
1. Assists in making hole by:
a) Removal of cuttings, the removal of cuttings from the face of the well bore is still one of the most important functions of drilling fluids. Fluid flowing from the bit nozzles exerts a jetting action that keeps the face of the hole and edge of the bit clear of cuttings.
b) Power transmission to bit nozzles or turbines;
c) Cooling and lubrication of bit and drill string, considerable heat is generated by friction in the bit and where drill string is in contact-with the formation or casing. There is little chance for this heat to be conducted away by the formation; therefore, the circulating fluid must remove it. 2. Assists in hole preservation by:
a) Support of bore hole wall;
b) Containment of formation fluids;
3. Supports the weight of pipe and casing;
4. Serves as a medium for formation
References: Contents from Lab Handout