Screw conveyors with safety protection for drilling cuttings transfer
GN Solids Control offers different sizes and lengths Screw conveyors to carry drill cuttings from barite recovery decanter centrifuge, solids control shale shakers, mud cleaner Desander and Desilter to mud cutting waste pits eliminating water-jetting. The Screw conveyors can also feed or discharge drill cutting from other solids control equipment, like to feeding for High G dryer shale shaker or Vertical cuttings dryer, to transfer the discharges cuttings to skips or other drilling waste containers.
GN Solids Control screw conveyor augers can be provided with mechanism of automatic emergency cut off and switch off the power supply to the auger when the covers / gratings around the auger are opened / removed or not closed or not appropriately fixed.
All augers are equipped with explosion proof limit switches for all auger covers for each sections. There are controls inside the motor starter control panel for the limit switches. In case any auger covers are opened / removed / not fixed appropriately, the auger will be switched off and be stopped.
Besides the mechanism of automatic emergency stop, GN Solids Control makes screw conveyors with other optional safety protections. Below are some of the optional safety protection provided by GN.
1) GN screw conveyor augers can be equipped with Electromagnetic brake motor for immediate stop without delay. For normal motors, the auger will be stopped after some seconds while press E-stop. With the electromagnetic brake motor, there will be no delay.
2) GN screw conveyor augers can be equipped with full Length Safety Grab Wires
3) GN screw conveyor augers can be equipped with mechanical speed reducer for variable speed control.
Screw conveyors is a normal equipment popular used for drilling mud solids control system and drill cuttings treatment systems. For more information of the screw conveyor or other drill mud and cuttings treatment system, please contact GN 7×24 hour service line.
Why you must use replacement screens conforming to API RP 13C
Many manufacturers are labeling their screens as “conforming to API RP 13C. But few companies have the API RP13C testing report. They do not really know what does API RP13C screen means? How they can say their screens are “conforming to API RP 13C. They must supply the test report and data from the authorized third party as support and confirm.
GN is the only one Chinese company who has the API RP 13C third party test report according to API RP 13C. This means all the data on GN made screen labels are from lab test, it is accurate. But most other China competitors cannot offer the API RP13C testing report. If clients get screen from other suppliers without API RP13C testing report, or they do not have the full line report to cover all API sizes per API RP13C standard. It means the data on the screen tag or label is not accurate. Maybe the API 140 shale shaker screen they sold is actually API 100 or API 170. With the wrong screen opening, rig site people are difficult to control the mud weight and mud flow. That is the root reason that why many big companies do not accept these types of screen from the suppliers without full line API RP13C testing report. They only accept API RP 13C compliant screens.
GN Solids Control is one of the biggest manufacturers for oil field replacement shale shaker screens. GN Solids Control has Research and Development department specialized on high quality replacement screens development. GN owns the full line production equipment to make composite material screens by from raw material to final screen. It ensures a better quality control for all process and materials.
GN Solids Control can make high quality replacement screens for most of the popular shaker models. Furthermore, GN Solids Control can make customized design screens, or make screens with clients’ legal company name, logo, package and branding.
Crude oil sludge treatment process
GN design and manufacture crude oil sludge treatment system. The main principle of process is by heating the oil sludge and wash the oil sludge with chemical and separate by GN separation equipment to get final product of clean oil, clean water and environmental friendly solids.
The process of GN Crude Oil Sludge Treatment is as below:
1) Pick up oil crude oil sludge.
Depends on the condition of the oil sludge, a sludge vacuum pump can be used to pump solids and mixture of liquid. The excavator will be used to pick up sticky and high solids content crude oil sludge.
2) Pre-Mixing with heat and chemical
After pick up from the sludge pit, diesel or water will be added to the mixing tank to dilute the oil sludge, and the tank is design with heating pipelines to heat up the oil sludge to be 70 c degree. Oil sludge treatment chemicals will be added during the mixing process to reduce the viscosity and enhanced the separation of the oil sludge.
3) Primary screening separation.
After mixing and washing, the mixture of sludge will be pumped to the shale shaker for separation of coarse solids. Typically, 2mm screen will be used on the shale shaker.
4) 2 Phase decanter centrifuge separation
After removal coarse solids by shale shaker, the fluid with fine solids will be pump to the two phase decanter centrifuge for fine solids separation. The majority of the solids will be separated by the decanter centrifuge. Typically, the solids discharged will be have oil on solids below 2%. And the solids will be sent to thermal desorption unit or further treatment.
5) 3 Phase separation
After fine solids separation by decanter centrifuge The fluids will be feed to a 3 phase disc centrifuge for separation of oil, water and solids. The recovery oil can be sold to Refinery Company.
6) Water treatment Process.
The water discharged from disc centrifuge will be sent to a water treatment equipment to get clean water. And the recovery water can be reused for washing the oil sludge again.
You can visit here to check the video of our oil sludge treatment system below:
http://www.gnsolidscontrol.com/video/oil-sludge-treatment-test-unit-working-video