TRACTMud density is one of the most important factors inmaintaining well control.

The importance of the density experiment is todetermine the weight of a readied volume of mud sample, in different unitswhich can be used for various operations on the field. It can also be used tomaintain the hydrostatic pressure in the wellbore. It also helps to preventfracture in the wellbore which can lead to blow out and expensive damages tothe rig.This report will show the laboratory method for testingthe density of mud with the use of mud balance. It will also show the resultsgotten from the experiment.            Tableof content Abstract…………………….…..

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.………………………………………………1 Introduction…..……………………………………………………………….2 Diagram..

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.3 Procedure……………………………………………………………………….4   Results/Analysis.……………………………………………………………..

.5 Precautions…….………………………………………………………………6 Discussion & Conclusion…………………………………….………….

..7 References……………………………………………………………………….8   INTRODUCTION Density of a mud can be defined as the weight per unitvolume of the mud.

It is expressed in pounds per gallon (lb/gal or ppg), poundsper cubic foot (lb/ft³) or in the form of specific gravity specific gravity. Thedensity of any sample needs to be determined before any drilling operation canstart. Mud density should not be taking likely during the drilling operationbecause the smallest error in the values can lead to catastrophic disaster.

It forms the starting point of pressurecontrol.                              DIAGRAMS                       A4-Scale Metal Mud Balance with Carrying Case. Electric Mixer  EQUIPMENT /APPARATUS§  4 scale mud balance with carrying case     §  Electric mixer §  Beaker §  Measuring cylinder  §  Weighing balance §  Spatula         PROCEDURESSAMPLE1:1.  Weigh 35g of bentonite on the weigh balanceand measure 350ml of water in the glass measuring cylinder and mix them thoroughlyto avoid formation of lumps.

2.  Place the mud balance base (preferably inthe carrying case) on a flat level surface.3.  Fillthe clean, dry cup to the top with the test fluid. 4.  Placethe lid on the cup and make sure it is properly set. Be sure to clean andremove the expelled mud that escapes through the hole in the cup as this willensure the cup is full and also will free any trapped air. 5.

Placethe balance on the knife edge and move the rider along the outside of the armuntil the cup and arm are balanced as indicated by the bubble. 6.  Takethe readings of the mud weight at the edge of the rider towards the mud cup. 7.  Pourthe mud sample in the cup used for the density experiment back into theinitially prepared mud sample of which part had been used for the experimentand wipe the cup clean.

SAMPLE2:1.  Weigh 35g of bentonite and the 10g ofbarite on the weigh balance and measure 350ml of water in the glass measuringcylinder and mix them thoroughly to avoid formation of lumps. 2.  Place the mud balance base (preferably inthe carrying case) on a flat level surface.

3.  Fillthe clean, dry cup to the top with the test fluid. 4.  Placethe lid on the cup and make sure it is properly set. Be sure to clean andremove the expelled mud that escapes through the hole in the cup as this willensure the cup is full and also will free any trapped air.

5.  Placethe balance on the knife edge and move the rider along the outside of the armuntil the cup and arm are balanced as indicated by the bubble. 6.  Takethe readings of the mud weight at the edge of the rider towards the mud cup.

7.  Pourthe mud sample in the cup used for the density experiment back into theinitially prepared mud sample of which part had been used for the experimentand wipe the cup clean.   RESULTS AND ANALYSIS  READINGS SAMPLE 1 SAMPLE 2 PPG 8.7 8.8 S.

G 1.04 1.06 Lb/ft 65 66 Psi/1000ft 455 460                                                     PRECAUTIONS1.   I avoided parallax error by taking my readingat the lower meniscus. 2.   I ensured that my 4 scale mud balance wascalibrated before I began my measurement.

3.   I ensured that the cup of the mud balance waswiped dry before it was balanced on the knife edge.   DISSCUSION & CONCLUSION In conclusion the testfor mud density is a very important test. From this experiment we were able toobserve that the density of sample 2 has a heavier density that sample 1because of the presence of barite which is as a weighing agent and increasesthe density.  REFERENCESDrilling fluidtechnology by Dr.Engr. E.

E.OkoroDrilling mudmanual  by Engr.  Ifeanyi

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