The drilling waste management is one of the most important challenges in the oil gas drilling industry. The used drilling mud and cuttings are the main problem. The main pollution of cuttings is caused by:
●Drilling Mud ●Oil
●Biocides ●Completion or stimulation fluid components
●Corrosion inhibitors ●Reservoir Fluids
A sustainable development requires the zero discharge of wastes into environment. Decanter centrifuge and vertical cuttings dryer have proven to be an important and efficient piece of equipment to treat the drilling cuttings after solids control process.

Drilling operators have to follow the national environmental policy worldwide. Because the sustainable development becomes a basis of environmental policy it is no more possible to continue the open system of drilling waste management. Research institutions and drilling operators are looking for technology meeting the closed system requirements. There are three main points such approach:
●Amount of waste has to be minimized as much as possible
●Reusing and recycling is necessary
●Only safe and similar to the local environment material can be deposited

Reach us at GN Solids Control for your drilling waste management sulotions.

The principle aim of waste management is to ensure that waste does not contaminate the environment at such a rate or in such a form or quantity as to overload natural assimilative processes and cause pollution. Eliminating or minimizing waste generation is crucial, not only to reduce environmental liabilities but also operational cost. Many disposal practices of the past are being questioned now. As inadequate waste handling eventually leads to environmental damage and financial liabilities, systematic waste management through integrated environmental economics became a preferred approach in the up stream phase of the petroleum industry.

Decanter centrifuge and vertical cuttings dryer has become a popular approach to avoid the environment damage and save high drilling waste cost.

Historically, waste pits (reserve pits) were used at land rig sites. At the end of each well the wet cuttings left to dry naturally and then bulldozed or covered with natural soil. More recent history the cuttings were dug out and trucked to landfill, where a significant cost is incurred as the cuttings were treated purely as waste material current practice for operators onshore and offshore employs extensive fluids recovery and drilling cuttings disposal methods. Often, because they want to be considered responsible guests by their host country, oil and gas operators impose even more stringent environmental regulations on their operations than those imposed by the country in which they are drilling. E&P waste- management has evolved beyond the traditional drill cuttings and excessdrilling fluids during drilling and workover operations. Though these comprise the vast majority of the wastes other materials include contaminated water, material and chemical packaging, emissions such as carbon dioxide, scrap metals, fuel, lubricants and other oils as well as the usual human and industrial wastes associated with E&P operations.
Shell Exploration and Production Company established a Rig Waste Reduction Pilot Project in 2001 to identify potential waste reduction strategies. Their preferential hierarchy that they developed is: reduce, reuse, recycle, recover and dispose. The major of the total waste stream was found to be drilling discharges and non-hazardous oilfield waste. Mud use was reduced by 20% and mud component packaging was reduced by 90% through a combination of solids control efficiency, vertical cuttings dryer technology and bulk mixing equipment. In addition, Shell implemented a sorting, compaction and recycling process for solid waste (consumables and trash) to reduce landfill disposal.
Schlumberger has introduced a total waste management program to mitigate rising quantities of landfill waste. Benefits included an overall improvement in general housekeeping that reduced health and safety exposure and a general increase in environmental awareness and concern. Mobil implemented a waste management program for the Hugoton field operations.
The waste management system decreased overall waste-related costs while improving compliance assurance and reducing potential liability. The key element was a mechanical solids control system consisting of a semi-closed loop centrifuge flocculation dewatering process that removes solids for burial on location.Waste management, however, incorporates other aspects in addition to drilling fluids and cuttings. Air emissions and water runoff from the site should also be considered. With the increase in rig activity in the Rocky Mountain states, pollution from drilling rigs and other oil field related equipment has become a concern.

GN decanter centrifuge is now available from Huston, Texas USA. Clients of America, Canada and Latin America can buy centrifuges from Huston Warehouse. GN Solids Control (China) with her subsidiary Solids America LLC located in located 6710 Windfern Road, Houston, TX 77040, is the first Solids / Liquid Separation Equipment manufacturer from China that set foot into the US market.

A number of GN high standard decanter centrifuges are now working in the America Oilfield. There is no doult that GN decanter centrifuges can meet the performance requirement and environment regulations of American oilfield.

Now we have GNLW363 decanter centrifuge for sale in Huston, Texas
GNLW363 Decanter Centrifuge is the most popular size centrifuge in the oil drilling industry. It can be used for fine/ultra fine solids separation, barite recovery and zero-discharge dewatering. With it’s removable legs, the GNLW363 can be used on solids control mud tank system or the telescopic skid for drilling waste management. GN have the fixed speed available with different pulley for option to change speed, and VFD drive with PLC control available for your different applications. With sales of 150 Sets of Centrifuge every year around the world, you can see GN centrifuge all working all around the world.

High Decanting Bowl Rotational Speed
Bowl speed adjustment is usually achieved by variable frequency motor or hydraulic motor. The greater is the speed, the greater is the centrifugal force and high centrifugal force helps improve the mud cake dryness.

Excessive Decanting Bowl Rotational Speed
But excessive rotational speed will destroy sludge flocculation, and reduce the dewatering effect. At the same time, the higher speed requires more strictly for material. The wear and tear on the decanting bowl and drum increase, meanwhile, the power consumption, vibration and noise will be correspondingly increased.

Conclusion
It is not true obviously that the higher the speed, the better the decanter centrifuge. You have to balance the rotation speed with the actual service centrifuge material. GN decanter centrifuge main material:
1. Top brand material, e.g. bearing we used SKF or FAG
2. Screw propeller protected by tungsten carbide tiles
3. Bowl assy is made of stainless steel 316
4. Welding connection of straight cone and taper cylinder.

GN Solids Control branded decanter centrifuge are big bowl, big volume, high G force available. Please visit Decanting Centrifuge page for more information.