Drilling waste treatment status and technology

In the process of oil exploration and production, a large amount of waste will be left on the well site. In view of these harmful substances, how to adopt corresponding drilling waste treatment technology to minimize the harm caused by waste drilling fluid to the environment is a very important task for oil and gas field enterprises.

drilling waste treatment

For a long time, most of the domestic oilfield drilling waste treatment is to directly solidify the waste liquid in the waste storage pool after the completion of the drilling and completion work. Due to the high water content in the total waste to be processed, this method consumes a lot of chemicals, has a high cost, and has an unsatisfactory effect, and it cannot completely eliminate the hidden danger of pollution.

With the requirements of local governments for environmental protection, the current domestic onshore oilfields are gradually paying attention to the harmless treatment of waste drilling fluid. Therefore, the treatment technology route with solid-liquid separation technology as the core has begun to be used in drilling waste treatment. This technology has changed from simple and rough direct solidification in the past to a process technology route combining chemical method, solid-liquid separation method and solidification method.

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How does Decanter Centrifuge Work?

Decanter Centrifuge

Introduction: Decanter centrifuge is a very common equipment that is often found in an oil or gas drilling site. A decanter centrifuge is a very important machine for oil and gas drillers. A decanter centrifuge is basically used to dilute the underground fluids and liquids.

The main job of a decanter centrifuge is to rotate the drilling fluids and in doing so breaking the concentration of those fluids. The whole working functions of any decanter centrifuges is pretty much complex. Here is a discussion given below about how a decanter centrifuge works.

decanter centrifuges
decanter centrifuges

The way a decanter centrifuge works:  As it is mentioned before the process of a decanter centrifuge is a bit complex. Usually,  decanter centrifuges depend on sedimentation, differential speed and G force to perform its job. A decanter centrifuge needs a centrifugal force in order to loosen the fluid.

The sedimentation rate is an important feature for the centrifugal process. If the G force or centrifugal force is very high, the separation process becomes very easy and effective. The size and shape of particles and their level of concentration determine the sedimentation rate of any decanter centrifuge.

The sedimentation rate also depends on the centrifugal force. Another important issue for the functionality of decanter centrifuges is the differential speeds. In a centrifuge two different parts rotate simultaneously. The first part that rotates is the exterior bowl and the second part that rotates is scroll conveyor. Sedimentation is gathered in the centrifugal cylinder as the result of varying speed of the two above mentioned separate parts.

If the differential speed of decanter centrifuges is too high, a little time is required to loosen up the concentration of waste fluids. So, it is very important to keep the differential speed of a decanter centrifuge minimal. Thus, a decanter centrifuge operates its functionalities.

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