Drilling mud system

One set 500GPM drilling mud recycling system was sent to Middle East for water well drilling. Besides the drilling mud recycling system for oil drilling, they also need drill water well for daily requirement for clean water. For the person living in Middle East, water is more important than oil. Sounds like a joke, but this is reality.
Water well is not so deep like the oil well, and the drilling cost is also very cheap comparing with oil drilling. However, both this 2 drilling processes need the drilling mud recycling system to speed up the drilling process and protect the drill bit. Water well drilling may not need the used drilling mud to be separated very clean as it is not requested strictly. Just like this 500GPM unit shipped to Middle East, it is a very compact
model, while it has all the necessary separation equipment.

2015.12.24_water_well_drilling_mud_system_500gpm

water well drilling mud system

It has one unit shale shaker GNZS703DZ with 3 panel screens which could remove out the solids always larger than 300 microns. This model is with the mud feeder on top of the shaker deck so that this shaker could be much more compact. As the water well drilling is always not so deep, hence, the solids coming out with the drilling mud is always not so hard. In this 500GPM mud recycling system, the de-sander cone is not equipped, but directly the de-silter cone would be used to separate the solids size of around 20 microns.
This 500GPM water well drilling mud system is a standard GN model GNMS-500G with 2 unit centrifugal pumps. One of each is used as feeding pump for the de-silter cyclone, and the other one is used for mud mixing, the mud tank is divided into 2 compartments. It has enough space for clean mud storage.
Though this 500GPM mud system is for water well drilling, it can also be used in other drilling project like HDD. As the working principle is completely the same. The customer killed two birds with only one stone.

Pitless means no need to dig a pit on the ground to collect the drilling cuttings. Nowadays, though the solids control system is widely used in oil drilling, some drillers still dig a mud pit on the ground to collect the drilling waste cuttings discharged out from the primary solids control equipment.
So long as the drilling rig is working, the solids control system has to be working all the time as the used drilling fluids is continuously coming out from the drilling well. With the issue of much strict environment protection regulation, the driller need find a solution to reduce the volume of the discharged drilling cuttings; in the meanwhile, much more drilling fluids could be recovered to reduce the drilling cost. And then they got a
conclusion, if I can establish a pitless drilling cutting disposal system, all the problems would be solved.

pitless drilling cuttings disposal system

Pitless Drilling Cuttings Disposal System GN

Pitless drilling cuttings disposal system requires a good connection between the traditional solids control system and waste cuttings management system. The most important is there should be a final solution on how to make the discharges environmental friendly. For the waste cuttings out of the shale shaker and cyclone unit, no matter water base or oil base. We have the high G force drying shaker and vertical cutting dryer unit to make the cutting much dryer so that more drilling fluids could be recovered. The recovered drilling fluids would be pumped
to a high speed centrifuge for separation of fine solids in the drilling fluids. After treated by the centrifuge, the drilling fluids would flow back into the storage tank for drilling reuse. The screw conveyor is used to transfer the drilling cuttings from shaker unit to the cuttings dryer machine. Therefore, it is no need to dig a mud pit, or at least, a large and deep mud pit on the ground to collect the drilling cuttings. We nearly realize
the pitless before the final disposal of the dry cuttings.
There are Thermal Desorption Unit and solidification unit could be used to dispose the cuttings from the high G force drying shaker and Verti G dryer. These 2 systems could make the cuttings none hazardous for environment. Finally, the pitless drilling cuttings disposal system is established.

All large capacity drilling projects such as oil gas drilling, no dig drilling for pipeline laying and water well drilling need drilling fluids when doing the drilling job. There is one type equipment naming shear pump that is an ideal choice for drilling fluids mixing. We could see the drilling fluids as the blood of the drilling equipment.

GN high efficiency shear pump polymer cutting

GN Shearing Pump in Mud System

Here, how to make the drilling blood clean and let the blood perform well is so important to all the drillers. It is known that the drilling project need a drilling fluids recycling system, or we call it mud recycling system. Before start drilling, we need get the mud recycling system ready. On the other hand, we need the drilling fluids to be ready. The drilling fluid is a mixture of water/oil and some mud materials like barite, bentonite, and some other chemical agents. Among the various mud materials, the bentonite is the most important one and the consumption is quite big. Meanwhile, the bentonite is also a polymer which is difficult to solve into the drilling mud base.

Then how should we resolve this problem? Bingo! We need a shear pump. Thanks to the special design of the impeller, the shear pump could cut the polymer into very small pieces so that these materials could solve into the water easily. A high efficiency shear pump could make the consumption of bentonite reduce 30%. Oh my god! Really a large cost saving.

This is not the only advantage to use a shear pump to cut the polymers. Once the drilling started, the solids control equipment will also start running. When the used drilling fluid comes out from the well whole and flow into the shale shaker, the mud recycling process is beginning. If there is much long strips material in the drilling fluids, the screen will be blocked which leads to loss of polymers.
One thing the drilling fluids engineers need pay attention is the shear pump cannot run without fluids inside the pump. As you know, the shear pump is use centrifugal type pump, it need run with liquid to reduce centrifugal force so that the fluids can be transferred continuously. One more, the shear pump cannot be used to transfer used/active mud, as the cuttings in the used mud will definitely damage the pump parts.

Recently GN Solids Control exported a oil drilling rig mud system for a 1500hp oil rig in Russia, with our partner supplying the mud tanks. GN supplying all the main equipment like shale shaker, mud cleaner, decanter centrifuges, centrifugal pumps.

A normal 1500HP oil drilling rig developed with a 350 t hook load capacity for medium deep wells. Every aspect of rig operation from mobility and deployment to machine and structural design has benefited from a wide array of improvements that maximize safety while minimizing the time for rig-up/down and transport. An integrated hydraulic system is connected to raise the mast and the substructure. When the substructure is in the lowered position, the mast is connected to the drill floor. The mast is raised by two hydraulic cylinders. When the mast is in the vertical position then the hydraulic cylinders are disconnected and retracted. Two telescoping cylinders now lift the substructure into operational height.

GN Shale Shaker

 

The normal mud system (4 mud tanks system 1600bbls) mainly including

DITCH MAGNETS

MUD TANKS: SHAKER TANK (1) ea. 40 L x 8’ W x 8’ High 400 BBL with porch

INTERMEDIATE TANKS: (1) ea.‐40’L x 8’ High x 8’ wide 400 BBL with porch

SUCTION TANK: (1) ea.40 L‐x 8’ft W’ x 8’ High, 400 BBL with porch

RESERVE TANK (1) ea.40 L‐x 8’ft W’ x 8’ High, 400 BBL with porch

TRIP TANKS (1) 80 BBL Capacity With 3”x 4”transfer Pump X 20 hp.

PILL TANK: (1) 80 BBL Capacity

GN Centrifuge

Slug Pit

1) 4 sets of shale shaker, GNZS594E-HB.

This shale shaker is 4 panel shakers with big treating capacity,

2) DESANDER‐DESILTER (1) With 16 x 4” De‐silter Cones and (3) 10”in cone De‐sand 6 x 8 centrifugal pump (2) ea 100 hp. motors

3) 2 sets of decanter centrifuge, GNLW363CG

The centrifuge is high speed centrifuge can reach 3200RPM, and G force 2062@3200RPM.

4) 20 sets of centrifugal pump

Freely contact with GN Solids Control for a total solution.

GN Solids Control mud recycling systems are widespread in the world. Mud systems may be used in oil and gas area in addition to HDD, TBM Drilling, CBM Drilling or Water Very well Drilling. Last year, GN offered two sets of high construction mud recycling systems to get no dig drilling to 1 Asian client. Just some days and nights before, GN Solids control provided another set soil systems for one client coming from Philippine.
With a compact framework, this system is mainly used to distinct dirty mud can get clean up water. By using this set, each of our client can get water wherever possible, and solids can be individual out for further treating. The item mainly includes the following accessories:
1 . GN shale shaker GNZS594E-HB, 1 set
The dealing with capacity of this shaker will be 600 GPM. By using world renowned vibration motors like German OLI or USA Charlie, GN shaker can work to get a quite long time without cracked.
After the mud is shipped to the shaker from the serving box, the 4 portions shaker screens will distinct out most the solid waste. GN using good quality cable mesh to manufacture individuals shaker screens in order to keep going longer while also has a pretty excellent separating performance. GN likewise manufactures some other shaker window screens to replacement well-known shaker screens, such as Mongoose, Brant, Derrick etc .

2015.05.27 500gpm mud system
2 . GN decanter centrifuge GNLW363CG-VFD, 2 units
These 2 sets centrifuges both have one 14 inches rotating bowl. Running rate can be changed easily by employing touch screen when using the VFD manage box. GN VFD package is using ABB or Siemens electrical components for long life use. Different explosion proof cardboard boxes can be customized based on customers’ demands, such as IEC, ATEX.
The first variable speed centrifuge is rotating at a decrease speed compared with the second just one. It mainly used to separate out and about those solids with a greater diameter. On the other side, the second centrifuge is used to separate finer debris at a higher speed.
3. GN Screw Pump, 2 pieces
These 2 screw pumping systems are used to feed the decanter centrifuge without agitating the soil too much. GN is using well-known positive displacement pumps Netzsch.
4. GN Mud tank
All the above equipments tend to be fixed on one mud aquarium.

Related Posts

GN Solids Control LTD and GN Solids America LLC’s VFD (variable speed drive) decanter centrifuge it allows oil well drilling service contractors or drilling mud service contractor company to perform the barite recovery, fine/ ultra fine solids filtrations and water-removal centrifuge. GN Solids Control LTD has the decanter centrifuge from 9 inch bowl to 22 inch bowl available for different solids-removal applications. GN Solid Control’s decanter centrifuge bowl length and diameter ratio is over 3 times and it gives the best result for the drilling fluids cleaning.

GN Solids Control China

Purposely to make drilling fluid decanter centrifuge parameter to perform adjustment according to the drilling stratum, depth of the oil well and drilling technology evolved through times, the development of the variable-control  speed and the closed-looped solids control system which basic on the main electric current to be as sending the control signal.

The oil-field application shows that drilling fluid decanter centrifuge matched frequency control speed closed-loop control system can use the different drilling fluid viscosity and density according to technology used and oil field’s physical condition.

Using decanter centrifuge main electric current signal, it automatic adjust the feeding pump displacement and high speed centrifuge actual parameter to realize drilling fluid centrifuge closed-loop control, ensure the de-slugging quantity and decanter centrifuge handing capacity always be in the condition at the fullest.

Drilling fluid decanter centrifuge frequency control closed-loop control system parameter can be automatic adjustment and realize self-awareness, also can efficiency avoid decanter centrifuge overload the fluid feeding and blocking.  It can improve the reliability of centrifuge operation; reduce the uncertain operation surprise because of sudden failure.

By using frequency control speed closed-loop centrifuge can automatic and manual adjust decanter centrifuge’s rotary speed, make it can be as the middle speed centrifuge(1000-2000 rpm), also can as the high speed centrifuge( 2000-3000 rpm) to achieve efficiency control drilling fluid solid phase content and improve drilling fluid solid control condition.

 

Related Posts

Shale shaker is a most popular equipment uses in drilling mud primary solids control system. According to different processing result and mud condition, the operator may choose the shale shakers with different vibration motions. Nowadays, the most often heard of the shale shaker vibration motion are the linear motion and elliptical motion. GN now has a new development shaker could realize the vibration motion changing during running between linear motion and progressive elliptical motion.

Below the Dual Vibration Motion Shale Shaker Parameters:

Dual motion shaker parameters

dual motion shaker shaker

GN’s dual motion shale shaker has 2 units vibrators, comparing with other brand dual motion shaker with 3 units vibrators, GN’s shaker is more cost competitive. The changing of the vibration is realized by operation on the control panel, no need to adjust the eccentric block of the vibration motors.

GN’s dual motion shale shaker is based on the shaker model GNZS594E with 4-panel screens that the material of which would be both steel frame and composite material available. Under the screen, there are patented design rubber sealing strips are inlayed into the screen frame which could ensure a better sealing performance. With the high G force up to 8, this dual motion shale shaker could also be used as a cuttings dryer shaker by replacing the weir feeder with a hopper feeder so that the auger could deliver the cuttings into the hopper feeder conveniently.

2015.08.09 Dual motion shale shaker (2)

GN Dual Motion Shale Shaker

The advantages of GN’s shale shaker are structure simple, easy for operation and maintenance, one shaker for various applications by changing different type’s hopper. The cost is also competitive.

Shale shaker is one of the main equipment in GN’s production line. GN also developed the own latest version decanter centrifuge and cuttings dryer unit. Please feel free to contact with us for more information.

For the upcoming no dig show this September in Australia, GN solids control would like to show there one set self-contained 200 GPM drilling mud recycling system for HDD projects. As a leading manufacturer especially for drilling mud recycling equipment, besides the large footprint mud system for oil drilling, GN solids control could also provide compact structure design mud recycling system.
According to the HDD rig mud flow, GN’s economic mud systems are classified as 150/200GPM, 350GPM, 500GPM, 800GPM/1000GPM and 1500GPM. Just like the unit of 200GPM would be shown in Australia, though it is small footprint, it has all necessary functions for drilling mud recycling and mud re-configuration.

2015.6.19 gn 200 gpm compact mud system for hdd (1)

200 GPM HDD Mud System

Below is the equipment list for the 200GPM unit
1. GNZY753-4N shaker and de-silter composition unit which has the functions for first stage primary solids separation and second stage for drying the solid discharged from the 4” cyclones. This unit has a top located buffer box for well back drilling mud feeding, the bottom layer screen of this unit remove the coarse solids, liquid goes through the mesh screen opening and gets down to the storage tank. Pumped by a 15hp centrifugal pump, the liquid was transferred to the de-silter cone for fine solids removing. The upper layer screen with much finer opening would block and separate out the finer solid cuttings.
2. GNSLM20A-110 Jet mud mixer is used for adding the mud chemicals and re-configuration of the drilling mud. The beneath located mud tank was divided into 2 compartments and one of them is used for mixing and storing the active drilling mud. The mixing pump adopted is same with the one for feeding to de-silter cones. That would be much easier for future maintenance and parts replacement. The mixing pump could also be used as discharging pump for transferring the active mud to the rig.

2015.6.19 gn 200 gpm compact mud system for hdd (2)

Compact Design Mud System

GN also has more compact unit for de-sanding, by connecting the de-sanding unit with a customized mud tank, the operator could run the mud recycling system more fit their own project condition. For more information on GN compact mud system, you may contact with GN team without hesitate.

As per the feedback from the customers who are engaging in the pilling business, GN designed and perfect the economic mud recycling system specially for the drilling mud cleaning application in piling project. On the consideration of limited location area of the piling project job site, GN’s piling mud recycling system is designed with a very compact structure but with full functions for drilling mud recycling.

GN economic desander unit (2)

De-sanding Unit

Below is the standard configuration of piling mud recycling system with treating capacity of 500GPM.
Model: GNMS500-D
Flow Rate: 500 gallons per minute
Cyclone Specs.: 1 pc 10” de-sanding cyclone made from 100% polyurethane
Screen Specs.: Shale shaker with up and down 2 layers screen with total screen area of 2.23m2
Feeding Pump: Mechanical seal type centrifuge pump of 50 HP used to feed mud to the de-sanding cyclone
Cut Point: Solids Removable down to 40 microns
Catching Tank: Under located catching tank for mud storage. The tank is equipped with lighting system and ladders for easy operation.
Electrical Control System: Explosion, water, and dusty proof electrical control panel with SIEMENS or Schneider components

GN also has the model of GNMS200-D and GNMS1000-D available and the treating capacity is separately 200GPM and 1000 GPM.
The advantage of this type mud recycling system is cost competitive. By connecting with storage tank and mud mixing hopper, this de-sanding unit could also be used in other kind of project like the small horizontal directional drilling, micro tunneling and water well drilling.

GN economic desander unit (1)

Economic Mud Recycling Unit Layout

GN recommends the layout of this economic mud recycling system:
1) Mud Pit
2) Submersible Slurry Pump
3) Mud Recycling System
4) Storage Tank
5) Outlet Pipe
6) Jet Mud Mixer.
GN Solids Control also offers submersible slurry pump, mud storage tank, as well as jet mud mixer per request.
GN is now on promoting this type economic mud recycling system, for more information, you may sent inquiry to sales@gnsolidscontrol.com

In some mining projects, before the exploitation, the contractor would like to do some research on the geological condition. The most popular method is to use the core drilling machine to get some sample of the stratum. By analyzing the stratum sample, the mining operator would get some basic information like the mineral reserves and what kind of the mineral it is.

When getting the sample of the stratum, the contractors always apply to use the core drilling machine to get a series column shape stratum. The drilling bit is a type of pipe, not like the drilling project for oil and gas, the core drilling not need too much drilling fluids to cool down the drill pit and take the cuttings out from the drilling whole. However, in order to make sure the better performance of the drilling process, the drilling contractor always will get a solids removal unit to separate the drilling cuttings from the drilling fluids.

Now the solids removal package unit specially for core drilling designed and manufactured by GN Solids Control has already been applied on site and the performance was proved good.

GNLW223 Centrifuge

GN Centrifuge for Core Drilling

In GN’s solids removal package unit, the equipment involved is as below:

Shale shaker model of GNZS752 with 2 panel screens, which is used as the first stage solids removing unit to separate out the larger size solids in the drilling mud.

High speed decanter centrifuge GNLW223 which is also the key equipment in this solids removal unit. It could run at a typical speed of 3800 RMP that ensure a good performance for dewatering. The semi-dry solids discharged out from the centrifuge unit could be transported easily.

Considering the requirement of the small footprint, this solids removing unit is designed structure compact and the mud tank only has 2 compartments separately to be used for sand settling and mud mixing. The centrifuge pump used in this system could both transfer the mud to centrifuge and mud mixing. This dual function centrifugal pump saves great power cost and reduces the system size.

For the power supply, GN could also provide a diesel generator as an option.

GN Solids Control is welcoming the customer worldwide come to us for learn more about the core drilling solids removal unit.