Base fluid oil-based mud

Before going into details of oil-based mud , the first thing that needs to discuss is the base fluid in oil-based mud. The base fluid is the continuous phase of oil, the main component of the system emulsion drilling mud around. In general, the base fluid will not react with the clay so you can not cope with the problem of swelling clay. With this advantage, many companies like to use oil-based mud as it is very good for drilling in the shale formation.

 

Today, there are several base fluids used in the drilling industry such as mineral oil, synthetic oil and diesel . I go to the details of each base fluid in future issues. Criteria on how to select appropriate base fluids are based on these criteria: economic performance drilling, rules and regulations of each area, and accessibility. Since the base fluids are toxic, many parts of the world will not allow the use because of environmental concerns. Some countries allow the use of oil based mud, so oil companies have a good waste management plan such as zero discharge,, disposal plan, etc. while operating the drilling operation. In addition, some areas may allow operators to fulfill some oil on the reduction in the ocean.You must respect the rules and regulations of each zone.

 

Before going into details of each base fluid, I want to describe the basic properties of fluid that you should consider when selecting the base fluid to your oil-based mud.

 

To the point - is the temperature that each liquid stops flowing. Ideally, the fluid must have a good basic low pour point as much as possible. Typically, if your state of drilling is not cold, you will not face this issue. However, if you drill where the climate is very cold in Alaska, Russia, etc., you must be very careful with regard to sink. Another condition drilling you have to look carefully at the pour point of the base fluid in operating in deep waters where the well temperature is very cold.

 

Viscosity - Simply put, it is an internal resistance of the fluid flow. The higher the viscosity of base fluid is, the more pressure is needed to move it. You must select the base fluid viscosity low as it can be.

 

Flashpoint - the temperature is that the base fluid may vaporize to form a mixture ignited in the atmosphere. For safe operation, the flash point should be higher than the maximum temperature under a flow line.

 

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