GN Series Pumps Used for Solids Control and Waste Management

Besides the main equipments used for solids control and waste management systems and HDD, CBM, Piling drilling projects, like the shale shaker, desander, desilter, mud cleaner, decanter centrifuge and vertical cuttings dryer, GN also produce suitable and reliable auxiliary equipments including mud agitator, mud gun, jet mud mixer and various of pumps.

Below are some popular pumps and their applications for your information:

1. centrifugal pump GNSB Series, which is also called sand pump. It uses centrifugal force to suck the material and feed to the main equipments. In a complete system, it is widely used like the desander cones feeding pump, desilter cones feeding pump and also the mixing pump for the jet mud mixer. In trip tank for a large solids control system, centrifugal pump is also used.

In a mud recycling system for the HDD, CBM, TBM or Piling, in most cases, centrifugal pumps are used as desander or desilter cones feeding pump also, and also mixing pump for the jet mud mixers. Sometimes, per client special request, it could be replaced by a horizontal slurry pump when serving as desander or desilter feeing pump.

2. shearing pump, plays similar role as centrifugal pump, but in some special chemical transportations, it is feeding pump for jet mud mixer also and because of the different design, it could also cut the chemicals during transportation.

3. submersible slurry pump, it serves mainly 2 applications in GN series solids control system and waste management systems, the first one is centrifuge feeding pump for GNLW363 decanter centrifuges, GNLW452 decanter centrifuges and etc. The second one is the feeding pump for a mud recycling system for HDD, CBM, TBM and piling works. Unless the oil and gas drilling rig jobsite, where the drilling mud could flow directly to the shale shaker, in such mentioned projects, the mud for treating mostly comes from the mud pit. A submersible slurry pump can help to suck mud from the mud pit to the system.

4. screw pump or called mono pump. GN is not manufacturing this screw pump, but in order to match suitable screw pump for the centrifuges, GN cooperate with the German brand Netsch. Screw pumps are most suitable solution for feeding the decanter centrifuges.

May you need any of them, welcome to contact us freely.

Why The Drilling Waste Should Be Treated or Handled

Where is a well being drilled, where is the waste generated. The wastes generated by drilling vary from the drilling fluids used for drilling and the drilling site, but generally include drilling cuttings, waste water, spent drilling fluids, completion fluids and filtration wastes. Absolutely the wastes are contaminants to the surrounding ground and water if directly buried in the mud pit. With increasing public awareness of the damage caused by the wastes, the stricter environmental standards and regulations on drilling activities, the significance of the handling and treatment of has attracted the eyes of drilling contractors and increased in different degrees around the world.

The handling and treatment process depends largely on the local regulation of a country, while in a country where there is no environmental regulation on the drilling activities, the drilling contractor will fall back on minimum standards used in other countries or standards set at a corporate level. Generally, 4Rs can be used to describe the process of handling and treatment of the drilling wastes: Reduce&Reuse&Recycle&Recover. Reduce means reducing the wastes by some methods such as precise plan, smaller bole and selection of drilling fluids. It would be perfect if no waste generated when a well is drilled. Reuse means cleaning the waste to collect active drilling fluids by solids control equipment normally including shale shaker as 1^st phase, desander& desilter or mud cleaner as 2^nd and 3^rd phases, and decanter centrifuge as the final phase. Recycle means to further treat the drilling cuttings after Recycle after the recovery of  the drilling fluid for reuse. Recover means to make the drilling cuttings into a hydrocarbon by high temperature treatment. Though the recovered hydrocarbon can not be used as drilling fluids, it can be used for a fuel material.  

The ways Solidification/Stabilization works

The treatment of solidification/stabilization "s/s" is the treatment of environmentally-harmful; wastes for disposal, reuse and/or site storage of land on contaminated.  It is the S/S treatment involves harmful materials mixing a binding reagent into the contaminated materials or waste. Although the terms solidification and stabilization sounds close-meaning by hearing, they describe different effects that the binding reagents create to immobilize hazardous constituents. Solidification refers to making a  change in the physical properties of a waste. The result- desired changes usually include an increase of the compressive strength, a decrease of permeability, and encapsulation of hazardous constituents. 

Stabilization at the other end, refers to chemical changes of the hazardous constituents in a waste. The desired-goal changes include converting the constituents into a less soluble, mobile, or toxic form by adding additional materials. S/S treatment involves mixing a jointed reagent into the contaminated media or waste. Binding reagents commonly used include cement, cement kiln dust (CKD), lime, lime kiln dust (LKD), limestone, fly ash, slag, gypsum and phosphate mixtures, and a various-kind number of proprietary reagents. Due to the great variation of waste constituents and media, a mixing material, design should be conducted on each type of waste. Most mix designs are a blend of the inorganic binding reagents listed above. Organic-blending have also been tried as well. These include asphalt, thermoplastic, and urea- formaldehyde. Organic binding reagents are rarely used in commercial scale due to their high cost compared to inorganic binders.

S/S is an effective treatment wide variety of organic and inorganic contaminants present in contaminated soil, sludge and sediment. The ability to effectively treat a wide variety of contaminants within the same media is a key reason why S/S is so frequently used in the remediation. Adding to the versatility of S/S treatment is the fact that contaminated material can be treated in-situ (in place) or ex-situ as already segregated waste or excavated material.  
Related Arciels:

• Solidification treatment purpose
• GN Solids Control Systems for 1000 HP Rig for Middle East
• Drilling Waste Management System Types
• GN Mud Recycling System for HDD Drilling
• GN Solids Control centrifuge working for Algeria market