Monthly Archives: November 2014

Waste Management System for Cleaning Drilling Cuttings

Drilling cuttings are a potential hazard to the sensitive environment as a contaminated particle. Field contractor need properly process drilling cutting and subsequently discharged to the environment. We will introduce what drilling cutting is and GN system for drilling cuttings recovery.

Drilling Cutting

Drilling cuttings typically are produced as solids are broken by the drilling bit advancing through the soil or rock: Drilling cuttings are normally delivered to the surface by drilling fluid. Drill cuttings firstly can be separated from drilling fluid by shale shakers. After shale shaker process, the cuttings are still contaminated, wet and not able to be discharged to the environment directly. Therefore, filed contractor need GN drilling cutting management system to make a further process.

GN Cutting Recycle System

GN Cutting recycle system combines the vertical cutting dryer and decanter centrifuge.20

GN vertical cutting dryer is capable of separating oil based mud and water based mud.Cutting dryer is also referred as vertical centrifuge and utilized the centrifugal force to dry the drilling cuttings. We will briefly introduce GN vertical cutting dryer.

1. GN cutting dryer offers a variety of screen opening size from 0.25mm to 0.5mm to suit for different project.

2. GN cutting dryer installs the air cleaning system that effectively avoids solids clogged on the screens and ensure the cutting dryer long time service.

3. Proper rotating speed and the robust material of flights also guarantee the cutting dryer to quality.

GNLW363 decanter centrifuge also plays an important role in the recycle system.

After GN vertical cutting dryer process, GN decanter centrifuge continue to treat the drilling fluid which separate from drilling cuttings. GN Ruggedly built and unique design centrifuge can provide solids and liquid separation for the fluids application. GN decanter centrifuge is effective for removing the fine solids in the whole waste management system. There is no doubt that GN centrifuge significantly reduce the field mud cost and minimize waste disposal volumes.

For your drilling waste management system, you could rely on the GN system.

GN Rapid Dewatering System for Dredge Slurry

GN dewatering system is capable of separating coarse debris and ultra-fine particles such as shells, debris, rocks, clays, sands and silts at high volume. GN rapid dredge slurry system produces stackable solids without applying extra treatment to meet customer’s requirement. Generally, GN utilizes the shale shaker and desander for dredge slurry system.

GN Dewatering System for Dredge Slurry project4

1. Typically we utilize GNZS594E-HB shale shaker as the first phase to remove coarse solids, GNZS584E-HB is with 600GPM capacity under mesh 40 shaker screen. Regarding to 1000GPM capacity, we technically use two set units to process the fluids. Also, desander unit is normally required by the dredge slurry system. One 10 inch desander hydrocyclone is 500GPM capacity, maximum we install three of hydrocyclones in one shale shaker to reach 1500GPM capacity. GN specifies the solids control equipment based on the project requirements.

Features of GN dredge dewatering system

GN dredge dewatering system is the most valuable system in the slurry industry. In the most dredging projects GN dredge dewatering system is capable of dewater over 60% dredged material and at a cost much less. GN is also recognized as an important supplier of customized tank, equipment and system for a variety of solids control, dredging and dewatering. There are some advantages of GN dredge slurry system

1.Rapidly separate high volumes of fluids and continuous operation,

2. Small footprint and low noise are available of operating in the residential and commercial areas,

3. Robust equipment and tank are with low maintenance and easy operation.

GN continues to provide equipment and system throughout all over the world. Our worldwide customers have given us the opportunity to service different industries including oil & gas drilling industry, dredge slurry industry, Construction, Mining and HDD. Our core values is “We provide equipment you can count on, and prompt service to all client need”

GN Drilling Cutting Screw Conveyor

Solid screw conveyors (auger) from GN Solids American are manufactured with robust steel, simple drive device and high efficient transfer the drilling cuttings. GN screw conveyors are available in standard diameters from 12 inch, 24 inch and 48 inch. Length sizes are available 24ft, 36ft and 48ft. GN screw conveyors are typically used to transport drilling cuttings from the shale shaker zone to a discharge section or to the vertical cutting dryer for further process.

Features of GN Screw Conveyor

The design and structure of Screw conveyor is available to customize. GN standard auger is 12 feet of every section, the 26A 穆图也去掉 副本parts of screw conveyor are easily replaced; Spiral blades are wear-resisting material to ensure its service life; Manufacture with the highest safety standards, the u-shaped protection device prevents foreign matter into the slot, and the framework protects and supports conveyor, in order to improve the rigidity of whole equipment and provide a safe environment. Screw conveyor is suitable for horizontal 15 ° inclination or less than 15 ° inclination. The medium temperature is – 20 ℃~ + 80 ℃

Application in the Solids Control System

1. Rapidly delivery the drilling cutting from the end of shaker screen to a discharge zone.

2. It is available to transfer the solids from the shale shaker to the vertical cutting dryer. And also apply for collecting the solids after the vertical cutting dryer process and subsequently to delivery to a discharge zone
3. In oil & gas drilling site, GN decanter centrifuge is widely used for collecting solids which are from decanter centrifuge. Generally, the decanter centrifuge is located in the high frame and screw conveyors are placed below the frame of decanter centrifuge to receive the cuttings/solids.

For your solids/cutting transfer or any solids control issues, you could contact with local distributor or GN representative to get more information.

 

200GPM Mud System Sent to Egypt Customer

GN Solids Control’s compact structure mud system is designed on the basis of oilfield mud cleaning system. By simplifying the structure, reducing the unnecessary equipment and mud tanks and changing the system overall dimension, the mud system would be easy transported and assembly. GN’s compact mud system has unique features and full functions for drilling mud cleaning. For the industries like Horizontal Directional Drilling, Coalbed Methane, Geothermal Well drilling, water well drilling even the diamond core drilling, GN’s compact structure mud system have already widely used in these industries.

Solids Control System 5

GN Solids Control just finished 1 set 200GPM treating capacity mud system for an Egypt project. In China domestic market, the main HDD rig manufacturer like TXS, XCMG, ZT as well as the world famous brand Vermeer have established cooperation relationship for equipped their rig with GN’s mud system. This Egypt customer came to GN via one of the HDD rig manufacturer in China.

200 GPM mud system basic configurations as shown below:

1. GNZS752E-DM linear motion shale shaker 1 units. The design of the top located logging tank shortens the length of the vibrating screen box, which is very suitable for HDD compact structure design of the less width of the mud tank.

2. GNZJ752E – 4N desilter with 4 pcs 4 inch hydrocyclone separation for down to 15 microns mud solid particles.

3. The slurry storage capacity is 15 cubic meters provide sufficient space for mud recycling and storage and small dimension is convenient for transportation.

4. GNSB4x3-11 shear pump 2 units. One of which is used for transferring slurry to de-silter cyclone, and another is used for mud mixing system.

5. Mud Agitator and mud gun are also equipped for make the suspending style drilling mud.

In the past few years, GN Solids Control has delivered more than 10 sets complete compact structure mud system to Egypt by cooperating with China main HDD rig manufactures. Egypt is a trenchless technology mature and developed market and they have their own industry standards, the annual demand of mud system is gradually growing. Especially the model of 200GPM to 500GPM series what are popularly welcomed and recognized.

GN Solids Control can also offer the hydraulic jack-up design HDD drilling mud recovery system design for limited area job site easy transportation.

GN Centrifuge for Barite Recovery and Dewatering Application

Not matter you are looking for a barite recovery or for a dewatering application, GN is capable of supplying the most of reliable and durable centrifuge for your project. GN centrifuges are used in all over the world for oil & gas drilling, waste management process and other drilling purpose.

Barite Recovery Application3

First of all, Barite is a heavy mineral having a specific gravity of 4.5 and its main use is in the manufacture of oil based drilling fluids. It will increase the density of drilling fluids that is reaching a desired depth in the drilling oil and gas project. The cost of barite is really high. Therefore, drilling contractor need recovery the barite and subsequently mix in the active drilling fluids to ruse it. On the other hand, most barite is less abrasive than other material and cause little damage for the drilling equipment.

GNLW452 is one kind of centrifuge which effectively recovers maximum barite to achieve the economic goal. GN centrifuge is 18 inch diameter and 43 inch length which can effectively process 176 gallon/minute drilling fluids. Single motor driving 60 HP offers a small footprint and easy operation. 2205 or 304 duplex stainless steel assures high quality of equipment. IECEX and ATEX international explosion proof standard provide a safe working environment. Also, Competitive price and reliable working performance win a really good reputation in the solids control industry.

Dewatering Application

GN supply ranging 14 inch, 18inch to 22 inch bowl centrifuges for different requirement of capacity. Both Fixed speed and VFD (Variable Frequency Drive) are available for different requirement. GN dewatering centrifuge is capable of removing ultra fine particles that cut point is down to 2~5 microns meet and exceed with most customer’s expectation.

GN centrifuges will continue to obtain high demand as the solids control industry requires sophisticated operation and high environmental regulations. Contact with us for more information.

How Are You Gonna Choose the Shaker Screen, Shale Shaker and Mud Cleaner

There is certain information that you may require so you could make a wise decision and before you sign the check on buying a host of item.

Factors

Screen: Generally, the more screen surface area you apply means more volume of drilling fluids you can clean.GN provides two panels, three panels and four panels for processing different volume of drilling fluids. In addition to the surface area, the API standard of screens is measured by the amount of holes per square inch on the panel screen. Different API number of shaker screen controls the size of cuttings that you remove. Sizes will change replying on the size of the cuttings and the type of formations you are removing

Shakers: There are three kinds of shakers in the market including orbital, elliptical and linear motion. GN provides the most reliable linear motion shale shaker. Technically, linear vibration is generated by a pair of eccentric motor turning in opposite directions. The design is able to allow for the development of straight line or linear motion that can also be produced in a positive incline. Therefore, linear shaker is capable of processing heavy clays, debris, small particles and ultra-fines.3C  (1)

Hydrocyclones: In order to further effectively remove ultra-fine solids the hydrocyclone size may either be 4, 5, 10 or 12 in. The smaller cone you have the ultra-fine solids you will clean. Each size cone has the corresponding micron cut point. GN 4 inch cones have a micron cut of 20 microns and the 10 in. have a 40 micron cut. Each 4 inch Hydrocyclone cones process the drilling fluids at a rate of 50 gallon/minute. Each 10 inch Hydrocyclone cones process the drilling fluids at a rate of 500 gallon/minute.

Please feel free to contact with the local GN distributer or Sale representative for more information. GN is dedicated to provide the best solution for your project.