Monthly Archives: August 2015

Drilling Waste Cutting Management System Onsite Layout Types

Drilling waste cuttings management equipment is more and more used in the drilling industry nowadays. The main cutting drying equipments are the vertical cuttings dryer, drying shaker and high speed decanter centrifuges the cuttings transferring system. According to the different base of the drilling fluids and the cuttings transferring equipment, the drilling waste cuttings management system has several layouts onsite.20150421101534830

Almost the waste cuttings waiting for treatment are collected from the primary drilling solids control equipment like the shale shaker, de-sander, de-silter and barite recovery centrifuge. According to different transferring equipment, the different collection equipment would be used. If the user choose to use the auger as the cuttings delivery equipment, it is better to use the auger also as the waste cutting collecting equipment. The auger is located horizontally at the side of the solids control system mud tank; the length of the auger is decided by the mud tank length. The collected cutting was delivered to the drying equipment by another auger unit. If the user chooses to transfer the cuttings by using the slurry hose pump, then the cutting could be firstly collected by a hopper unit which is connected with a hose pump, the hose pump could transfer the cuttings to the drying unit through the hose. Using the auger would occupy much of the area of the drilling site, while the hose pump could be installed freely with less limitation of space.

As per different base of the drilling fluids, the vertical cuttings dryer or the high G drying shaker would be chosen. GN’s modular design vertical cuttings dryer is the main cuttings drying equipment for oil base cuttings, the effluence out from the dryer is stored firstly in a intermediary tank, then the effluence will be pumped to the waste decanter centrifuge for polishing. The water base cutting mostly transferred to the high G force drying shaker for treatment. GN’s modular design drying shaker unit has a beneath located catching tank for drilling fluids storage and pumped to the centrifuge for further treatment.

The decanter centrifuge could be installed on a telescopic skid, thus the active drilling fluids could flow back to the mud recycling system by gravity force. If the decanter centrifuge is installed on a low mud tank, then the effluence out from the centrifuge would first flow into the mud tank, and then pumped back to the mud recycling system.

 

GN Solids Control Systems for 1000 HP Rig for Middle East

At beginning of this month, GN has got an order for 2 sets of solids control systems for 1000 HP rigs which will be working in a middle east country, and the end user is a national owned drilling company in that country.

The 2 drilling rigs now are in USA, under fabrication, and the ordered solids control systems will arrive to the rig jobsite at same time when the rigs are ready. “It is a landmark and a great change of my company”, said the general manager of the drilling company, “because before knowing GN, all of our rigs and equipments were all from USA. GN Solids Control is the first China brand we use, and these solids control systems are only the beginning, but not the ending.”

This 1000HP rig solids control system contains following equipments:1500 gpm mud recycling system

1. main equipments:

2 sets of shale shakers GNZS703E-HB, linear motional, with 3 pcs of screens and vibrating G force up to 7.5 G.

1 set if vacuum degasser before the mud cleaner.

1 set of mud cleaner GNZJ703E-2S12N, same under flow shaker as shale shaker in 1st step separation, and polyurethane material cyclones 2 desander cones of 10 inch diameter, and 12 desilter cones of 4 inch diameter.

1 set of middle speed big bowl decanter centrifuge GNLW452C fixed speed with 1800RPM, for barite recovery.

1 set of high speed decanter centrifuge GNLW363CG fixed speed for fine particle cuttings separation.

2. auxiliary equipments:

16 sets of GNJBQ110DD double impeller mud agitators.

16 sets of GNNJQ80A-3X mud guns.

2 sets of GNSLS35A mixing hoppers

5 sets of GNSB4*3-13J centrifugal pumps respectively for feeding the desander and desilter cones of mud cleaner and the mixing hoppers.

2 sets of submersible slurry pumps for feeding the middle speed centrifuge and the high speed centrifuge.

“ After those 2 sets of solids control package from GN Solids Control, China, matching for the 2 USA made Rigs, we may consider next rig from China also. It is pleasant experience to deal with GN.” Said the drilling company’s General Manager.

 

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