Monthly Archives: April 2022

The Function of a Poor Boy Degasser

Poor boy degasser is also called a mud gas separator, it is a quite important equipment used for oil and gas drillings. As is known to all, as the crude oil or gas are both flammable materials. And during the drilling procedure, along with the drilling mud, there are cases that the flammable gas comes out with the drilling mud. It will put the whole jobsite in danger. A poor boy degasser here is used to remove such flammable gas to ensure the safety work.

1. Where is the poor boy degasser located?
A poor boy degasser is always located beside the 1st mud tank, quite near to the mud distributor for the shale shakers, cause the mud outlet of the poor boy degasser shall be linked to the mud distributor, then to the shale shaker.
The other port of the poor boy degasser is on the cylinder’s top, which is a vent line for the flammable gas. The other side of the vent line is linked to the flare ignition device meters away from the drilling rig. There, at a faraway place, the flare ignition will deal with the flammable gas safely.

2. What is the function of the poor boy degasser?
Inside the cyclinder, there are plates. Such plates are used for separate the gas from the mud ,the gas goes up to the vent port while the mud flows into the drilling mud solids control system. There is always a U tube on the mud outlet pipeline and an accurate design of the U tube size ensures the good mud sealing function.

GN has both poor boy degasser and flare ignition device available among GN products, and also, GN is a professional solution provider for solids control systems in the world. All solids control equipment involved in this system are designed and made by GN Solids Control for a turn-key solution.


Mini Solids Vacuum Pump and Mini Decanter Centrifuge for International Customer

When you talk about something mini, what do you think? For example, a mini iphone 13, what image do you think? Yes, of course, a mini something means the same function with a more compact structure, a portable one or at least more flexible one. Have you ever considered a mini solids vacuum pump or a mini decanter centrifuge? In fact, just days ago, GN has supplied to an international customer such equipment, both in mini sizes, a vacuum pump and a decanter centrifuge.

2022.04.01 Mini Solids Pump

1. Solids vacuum pump. A solids vacuum pump is a quite powerful pump which is used for transferring medium with large particles. It is widely used in many different applications and places because of those features: first, it allows material with quite large particles with only limit as the pump’s pipeline diameter. Second, it can transfer to a quite large distance, for example, a small pump can transfer water to 500 meters away horizontally, and a large pump of 40cbm per hour, can even transfer water to 1000 meters away. Thirdly, it is suitable for different Explosive Proof conditions cause it is not driven by electricity.

A mini vacuum pump is equipped by wheels and a handle, which is flexible to be used for tank bottom cleaning by insert its inlet pipe into the tank.

2. Decanter centrifuge. Decanter centrifuges are quite efficient machines used for separating the solids particles from liquid thoroughly. The cutting point is determined by the bowl rotating speed. A middle speed decanter centrifuge can separate particles from 5 to 7 microns while a high speed one can remove particles from 2 to five microns. The decanter centrifuges’ capacity depends on the centrifuge size, especially the bowl diameter. The larger diameter it has, the larger capacity it can handle. A mini decanter centrifuge in GN equipment range is a 9 inch diameter one, and GN has all popular models available, such as 14 inch, 18 inch, 22 inch and even 30 inch.

This client who purchased both mini vacuum pump and mini centrifuge is planning to use those equipment for tank cleaning, respectively for pumping out and treating of the sludge.

Treating Capacity and Cutting Point of Desanding Units

GNMS Series Desanding units are one kind of mud treatment systems which are quite popular among clients in TBM, piling and HDD projects. This kind of desanding units are always a compact skid with 2 steps of separation machines and a mud pump, and also a catch tank on below for recycling.


It can be divided into following components based on the functions:

1. First step separation, by a bottom deck shale shaker. There should be a pump from outside the desanding unit for transferring the mud to the desanding unit’s lower deck shale shaker. The lower deck shaker shall have a set of coarse screens, normally API 10 or API 20 to remove the large particles from the slurry.

2. Catch tank on below. On below the shale shaker, there is a catch tank, which is also physically holding the shaker. The small particles will go through the lower deck shaker into the catch tank, then there is a pump to transfer the slurry from the catch tank to the second step separation.

3. The second step separation is provided by the cyclones. Based on the system’s requested capacity, the sizes and quantity of cyclones are different. For example, the GNMS-200D uses 4 sets of 4 inch cyclones and the GNMS-1000D uses 2 sets of 10 inch cyclones. After the cyclones, the solids phase falls onto the upper deck shaker for drying and the liquid phase is transferred to outside the desanding unit. And the wet solids will go through both screen decks and enter the next separating procedure.

So the cutting point of the desanding unit is determined by the cyclone sizes, and the capacity is limited by the cyclones, too. While the transferring pump is chosen per cyclones’ feeding need. For more information, welcome to contact GN sales team directly.