drilling rig

GN Solids Control is a worldwide famous
brand of mud solids control system, drilling waste management system, as well
as replacement shaker screens.

This week, GN Solids Control China factory
finished a mud system for a domestic project. It is a 4-tank mud system for
750hp drilling rigs.

1) The 4 mud tanks of the 750hp rig mud
system are the same size with 40ft container. And the tanks are equipped with
3-runner oilfield skid. The oilfield skid is with 250mm at each tank ends. It makes
the tanks easy to movement at jobsites.

2) GN Solids Control equips 2 sets Solids control
linear motion shale shaker separator for the system. The system is equipped
with 2 each 3-panel shale shaker, model GNZS703E. It is the most popular shaker
models for oil and gas mud system from GN Solids Control.

3) In this system, the clients choose 1
desander separator and a desiler separator.

The desander model is GNZJ752-2S. It is
equipped with 2 ea 10’’ desander cone. Each 10’’ desander cone is with max. 120
m3/h (528GPM) handling capacity.

The desilter cone model is GNZJ752-12N. It
is equipped with 12 ea 4’’ desilter cone. Each 4’’ desilter cone is with max.
20 m3/h (88GPM) handling capacity. For totally 12 ea 4’’ desilter cone, the
desilter handling capacity can reach to 240m3/h (1056GPM).    

4) The 4-tank mud system is equipped with a
middle speed decanter centrifuge to recovery the barite and reduces the mud
weight. The centrifuge model is GNLW452. It is a most cost-effective big bowl
decanter centrifuge widely used in solids control mud systems for oil rigs.

5) And there are many mud agitators, mud
guns, lights, and pumps for the system.

This clients choose a separate jet mud mixing system. The jet mud mixing hopper
and mixing pump as well as control panel are all mounted in a separate oil field
design skid. It is easy to move it and work to different mud tank systems.

The drilling mud decanter centrifuge driven
by VFD will give many benefits to the clients. The adjustable bowl speed and differential
speed allows the operators to set the right G force and solids pushing speed
according to the drilling mud conditions.

To design the VFD Control Panel, the
contractor needs the power supply specifications. Normally it is 460V/60HZ for
USA standard or 380V/50HZ for Europe and China standard. Than the pulley size
of the motor and bowl side will decide the bowl driving speed at different
frequency. After confirming the bowl speed formula, the contractor needs the
formula for calculation of the differential speed. For GN Decanter centrifuge,
the Sun-Wheel gear box ration is 57:1. So the differential speed will be the
bowl speed minus the gearbox input speed and divided by 57.

For the VFD Control panel, there is
different explosion proof standard. In China, it is CN Explosion proof which is
close to IEC Ex standard. In Europe, it is ATEX Explosion proof. And in North
America, the explosion proof standard is UL for USA, and CSA for Canada.

GN Pressurized VFD Decanter Centrifuge control
panel is specially design for Zone 1 or Zone 2 standard with ABB VFD and
stainless steel cabinet. The PLC smart control allows the user to operate the
drilling mud decanter centrifuge by HMI screen.

GN VFD decanter centrifuge has been
exported to over 30 countries and regions, GN Solids Control VFD decanter
centrifuge is available in different sizes including: GNLW223C-VFD (9inch)
bowl, GNLW363C-VFD(14inch bowl), GNLW453C-VFD (18inch bowl), and the big bowl
big volume centrifuge with 22inch bowl and model is GNLW553C-VFD.

To support the worldwide operators, GN
Solid Control keep expanding our branches, now , GN service and support are
available from Beijing, China, Houston, USA, and Russia. Some other areas are
covered by GN local partners who are the professional solids control service

China traditional new year will come in Feb. 2016. In order to thanks all GN clients’ support in the past year, GN Solids Control offered big discount for sale for GN drilling waste management equipment. The big discount for sale activity will last for the whole Jan.
Drilling waste equipment GN company offer big discount for sale in Jan. 2016:
1) Vertical cuttings dryer GNCD930C and GNCD930C-VFD. It is mainly used to treat the oil based drilling cuttings (OBM). Performance is very good. The Vertical cuttings dryer can reduce the oil on cuttings to 3% ~ 5%. After VG dryer, the solid discharged is very dry. It is easy for movement by truck. In some countries, it can be discharged directly with such low OOC. If not, it can be removed to treat by thermal desorption unit. 

2) High G dryer (also called high G drying shaker). It utilizes high G force reach to 8.0G to dryer the cuttings. High G drying shaker is mainly used to separate water base mud cuttings. Water base mud is more difficult for separation. The main problem to treat WBM with VG dryer is that, the mud will block the screen basket, then it cannot separate any mud any more. High G dryer shaker can also be used to treat oil base mud. But it can only reduce oil on cuttings to 10 ~ 15%, it is not enough.
3) High speed decanter centrifuge GNLW363C and GNLW363C-VFD. It is 14 inch decanter centrifuge. 14’’ is the most popular size centrifuge used in oil and gas drilling field. Client can choose fixed speed control or variable frequency control. For the VFD control, GN offers PLC touch screen for smart control.
4) Big bowl decanter centrifuge GNLW553C-VFD. It is a big bowl big volume decanter centrifuge. It is with a 22 inch bowl. It is the biggest size from GN Solids Control. It can be used for waste management, for mud solids control, as well as chemical dosing system (dewatering unit).
5) Screw conveyer. GN offers different diameter and different length screw conveyer for drilling cuttings transfer. The auger diameter do GN Solids Control offer: 10’’, 12’’, 14’’, 16’’, and 18’’. GN make 12 ft as standard design for each section. Clients can choose 1 ~ 4 sections for 12 ft, 24 ft, 36 ft, and 48 ft. Clients can reduce or extend the length at jobsite when need.

500GPM is the most popular capacity mud system for HDD, CBM and other trenchless activities. GN Solids Control dispatched a 500GPM mud system to clients.
Firstly, remove the shaker box locking device of shale shaker GNZS703E-HB and mud cleaner GNZJ703E-D8N (Please refer shaker user manual and mud cleaner user manual for detailed operation). Then have a trial operation to shale shaker and mud cleaner.
All valves for pipelines are on off state after dispatch from the manufacturer’s factory. Before start up the system, operator should open values first and ensure all of them unblocked.

Then, start up shale shaker GNZS703E-HB and mud cleaner GNZJ703E-D8N. After the shaker and mud cleaner is running stably, start up submersible slurry pump to feed for the shale shaker. It is the first stage separation. When the mud reaches to three quarters of the 1# compartment underneath shale shaker (about 1 minute), start up the desilter feeding pump (1# sand pump GNSB6x5A-12J). Mud will be transferred to the mud cleaner 4’’ desilter cyclone from the 1﹟compartment, at a pressure of 0.25~0.40MPa. It is the
second stage separation. The clean mud from 4’’ desilter cone flow to the #2 compartment. When the mud height reaches to the overflow pipeline, it will overflow to #3 compartment. The user-owned mud pump is connected to the suction line of the 500GPM mud system tank and transfer qualified mud to wellhead. The clean mud can also directly flow to outside storage tank through the desilter output pipe.
When needed, users can start up the mixing pump (2# sand pump GNSB6x5A-12J) and feed to the mixing hopper GNSLS35A. The weighted mud from mixing hopper flows to 3# compartment. The suction port and discharge port of mixing pump are equipped with T-pipe, it can also mixing/discharge mud from/to outside tanks.  
Pay attention to the performance of the desilter cyclone. Ensure it works properly. If not, adjust the cyclone adjustment cap for a better performance. Pay attention to the figures on the pressure gauge of desilter cyclone, ensure it is under the scope of the working pressure. The working pressure of 4’’ desilter cyclone is 0.25~0.40MPa.

Shale shaker, mud cleaner and desander, desilter are the most common solids control equipment for different drilling rigs, like oil and gas drilling, Horizontal directional drilling, coal bed methane (CBM drilling), water well drilling, piling, micro tunneling, and other trenchless and underground activities.
GN Solids Control as one of China leading manufacturing for solids control mud recycling system and equipment, they exported some shale shaker and mud cleaner for Hong Kong China for a trenchless project.
The client bought equipment from GN:
1) Solids Control shale shaker, GNZS703E.
It is a linear motion shale shaker with 3-panel shaker deck. It utilize pretention shaker screen and mounted by wedge for fast screen changing. GN offers steel frame screen and composite materials for its screens. Customer can choose suitable type per need. All GN shaker deck is made from stainless stain for better anti-corrosion and long lifetime. 

2) Mud cleaner GNZJ703E-3S16N
The mud cleaner is the combination of a linear motion shale shaker GNZS703E, 3 × 10 inch desander cone and 16 × 4 inch desilter cones. The cone assembly is mounted on the shaker deck. It is user friendly design. If you do not want to use mud cleaner, you just remove the cone assembly parts and use it as a shale shaker.
3) Mud cleaner ZNZJ703E-16N.
It is the combination of shale shaker and desilter cone. The under flow shale shaker is GNZS703E. Normally clients choose underflow shale shaker the same with solids control shale shaker. For this mud cleaner, it is only 16 ea 4 inch desilter cone, no desander cone applied.

Other solids control equipment can be offered by GN:
Complete mud recycling systems, mud tanks, decanter centrifuge, mud agitator, mud gun, poor boy degasser, mud gas separator, jet mud mixer.
Solids Control equipment is only a small part of GN Solids Control company. The main field of GN group is drilling waste management. f you want more information, or you have any questions on drilling waste management, welcome you contact GN group at any time.