一、Application Rang And Features of Mud Gas Separator

• May 27, 2022
• A mud gas separator is special equipment for gas gutting drilling fluid primary degassing, it is an ideal mud gas separator. Mud gas separator is divided into ordinary pressure and pressure auto control is according to pressure. ...

A mud gas separator is special equipment for gas gutting drilling fluid primary degassing, it is an ideal mud gas separator. Mud gas separator is divided into ordinary pressure and pressure auto control is according to pressure. 

 

The ordinary mud gas separator prevents hydration of drilling fluid and it uses excellent material manufactured, it can efficiently prevent harmful gas eroding and ensure staff and equipment are safe. 

 

When drilling fluid produces gas cut, the proportion, and viscosity will have a big difference, it can’t meet the requirement of drilling. A mud gas separator and flare ignition device are combined and used can ensure the drilling process normal operation. 

 

 

What Is Mud Gas Separator And How Does It Work?

 

Mud Gas Separator, located downstream of the choke manifold, is a vertical vessel used to separate any gas from drilling fluid during well control situation. Once the gas has been separated, it can pass through the vent line in the derrick. Alternatively, as long as it’s a safe distance from the rig, it could even be vented.

 

With mud separators, there are two main types. Also known as a ‘poor-boy’ and a ‘gas buster’, the more common of the two is called an atmospheric mud/gas separator. However, some mud/gas separators are designed to operate at moderate back pressure. Although these will mostly operate under 100 psig, it’s possible to come across those that work at the atmospheric gas vent line pressure plus the vent line friction drop.

 

As long as they have a liquid level control, all separators can be referred to as pressurized mud/gas separators. Ultimately, there are benefits and drawbacks to both pressurized and atmospheric mud/gas separators. Despite the differences, both types also have some common requirements. For example, the capacity of the separator may sometimes be exceeded, or a malfunction may be experienced. With this in mind, both must have a by-pass line to the flare stack as a precaution.

When the drilling fluid impinges on the vessel’s wall, certain precautions should also be taken to prevent erosion. In the case of plugging, easy cleanup should be possible with lines and vessels and these are more provisions to consider. For well testing operations, the rig mud/gas separator isn’t recommended for use unless it has been specifically designed for use in these conditions.

 

When a kick is being displaced, the mud/gas separator should be lined up constantly. As well as removing large gas bubbles from mud, the separator is also used to cope with gas flows as the influx reaches the surface.

 

Often, there are questions regarding the volume of gas with which each separator can safely cope. There will be a limit, and there’s a danger of gas getting into the shaker header box if this limit is breached. When it comes to calculating the maximum gas flow rate for each separator, an estimate can be made.