Electrical stability (ES) is one of the vital properties of oil-based mud. It shows the voltage of the current flow in the mud. ES represents the number stability of the emulsion mud.Let's me explain a little more oil-based fluid material that is not conductive. Therefore, the base fluid will not transfer any power. Only the water phase in the mud will conduct electricity. If the mud has good emulsion , you will number almost ES . On the other hand, if the emulsion mud is bad, you lower the value of ES.
Electrical stability (ES) is obtained from a tester kit electrical stability (see image below).
There are several factors that can weaken the emulsion such as oil / water, solids, pressure, temperature, certain types of equipment weights, etc..
What the ES we say?
If you are below specification ES Mud normal, it indicates that you have something to add in your mud as water, salts, which will make your mud in bad condition. In addition, you can use the ES to determine an interface between water and oil based mud when you move the property.
For good drilling practices, you should frequently monitor the ES and observe any unusual variation. You may be changes in PE if you are drilling in the green cement, or adding a conductive material as described above. These factors affecting the know ES is to be noted to avoid confusion when interpreting the property of the mud.
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