GN Nodig Mud Recycling System

1.  Install a fused disconnect device having sufficient interrupting capacity to clear the maximum fault current capability of the power supply  Decanter Centrifuge.

2.  Remove the plug from hole at top of the electrical junction box, install appropriate feed-through into the hole, and attach rigid conduit. Pass three-phase cable through the conduit and into the shale shaker.

3.  Connect three-phase power leads to the terminals at the top of the starter block as shown in

THREE-WAY VALVE CONTROL ARM

For protection during shipment, the control arm is not connected to the valve. The control arm is

restrained by a tie wrap , which must be removed to permit connection to the

valve. Before operating the degasser, attach the control arm to the three-way valve as follows:

1.  Remove the 5/16-inch bolt and nut from the control clevis at the top of the valve.

2.  Remove and discard the plastic tie wrap retaining the valve control arm.

3.  Swing notched end of the control arm down into control clevis, and reinstall nut and bolt.

4.  Check for and remove any obstruction of valve’s atmospheric vent.

The content of this document is subject to  change at any time. Information provided does not cover all details or variations possible

Vertical cuttings dryer is the machine to dry cuttings our of shale shaker from solids control system. A whole DWM system will including:

1) Vertical Cuttings Dryer

2) Decanter Centrifuge

3) Augers Feed Vertical Cuttings Dryer

4) Augers Discharge Dry Cuttings

5) Holding Tank For Fluids

6) Transfer Pump For Fluids

Vertical Cuttings dryer performance is very important and need cuttings very dry for delivery. See bellow GN vertical cuttings dryer performance:

Other than vertical cuttings dryer, decanter centrifuge is the other important machine for DWM processing. Please visit GN web for more info.

Read and understand ALL safety information presented in this manual before installing and operating this equipment. Refer to Chapter 2 for a summary of Warnings affecting installation, operation, and maintenance of this equipment.

Before beginning the installation, review the information presented under Equipment Handling later in this section. Pay particular attention to the information concerning “lift points” and the use of spreader bars before lifting or moving the equipment.

Following is the sequence of steps for installing the Degasser. The sequence may vary depending on the user’s facilities and previous experience with this type of equipment.

Gnsolidsamerica.com is the owner of the article on shaker screen and shale shaker , pls click Solids Control to know more info,you can directly visit http://www.gnsolidsamerica.com/linear-motion-shale-shaker.html

Low-speed desander desilter: it is also called “barite recovery” centrifuge. Its separating factor is 500~700. To low-density solids, its separating point is 6~10μm. To high-density solids, its separating point is 4~7μm. This kind of centrifuge can be used for recovering barite. Medium-speed Desander: its separating factor is 800 or so, solids of 5~7μm can be separated, so harmful solids can be separated from the mud, so that gravity and viscosity of the mud can be controlled. Most drill team will choose this kind of centrifuge at present. High-speed Desander: its separating factor is 1200~2100 or so, separating point is 2~5μm, it can remove harmful solids, control mud viscosity, it is usually connected with low speed centrifuge to make up a dual centrifuge system(See figure 3). In the system, low-speed centrifuge is installed at the first grade, barite separated from it is discharged into mud tank to be recovered, liquid is drained into a surge drum first, and then be sent by a pump to high-speed centrifuge; the solid separated from high-speed centrifuge will be discharged out of the tank and the liquid is back to recirculation system. “Dual Desander system” can remove harmful solids efficiently, at the same time, avoid wasting barite. List of LW series horizontal scroll discharge Desander produced by our company is in the following table: LW450~842N LW600~945N LW355~1250N “Barite recovery” Desander,Mid-speed Desander,High-speed centrifuge,Frequency converting and speed regulating,means that this kind of function can be achieved. we recommend to use 2.2 Dreg’s being removed principle of the centrifuge.It is done by propeller. A speed differential will form between propeller and drum under the function of differential, then the solids which has deposited on drum’s surface will be scraped off and be pushed to the small end of the drum by spiral fan gradually and be dewatered during propelling, at last, be thrown out of the drum when reaching sand-discharging gate.Operation principle of the differential See Figure 4 for the structure of the ifferential, in fact, it is a two-stage planetary reducing gear, there is internal gear on the shell. Shell rotate with the drum, and then left pulley drive 1-stage sun gear on the input shaft to rotate, at this time, 1-stage sun gear gear into inner gear through 1-stage planet gear, thus 1-stage revolving arm rotational speed is formed by rotational speed of shell and input axle, and this rotational speed was outputted to 2-stage through 2-stage sun gear. The transmission principle of the two stages are the same, at last, propeller begin to rotate driven by output shaft. Differential is the most complex and most important part of the Desander, so you must replace the oil according to the manual say, no other oil is recommended, otherwise it may affect differential’s working condition and its serving life,gnsolidsamerica.com is the author of the article,pls click here to visit us

1. Shaker screen selection GNPS703 shale shaker can fix different meshes screen. This equipment can use 10-200mesh screen. Usually, when the shale shaker is first stage solids control equipment the shaker screen can be 30-100mesh. When the shale shaker is a part of mud cleaner, the screen can be 80-200mesh, click here to know more. Shaker screen selection can among manufacturer engineer, user, and contractor discussion. Replacement screen should be selected specially from manufacturer 2 Replace shaker screen process To make screen installation and uninstall more easy, GNPS703 designed fast installation structure. The structure is a special type use tension wedge to fix screen. Refer to fig IV. The structure including shelve strip, desander desilter. The first screen installation, we should inspect the screen dimension, such as 1250±2mm, the tolerance can’t over it. After fixed rubber strip, then put screen, shelve strip from shaker back (drilling fluid input), and push wedge evenly on two sides use hammer to push or tension wedges, make two sides identical. Tension each screens subsequently.Shaker screen replacement, during operation, when screens broken or need to be replaced , please refer to fig IV. Get wedge out, then bring out screen, check if rubber strips are sufficient; then put new screen on shaker deck and tension it steadily. The replacement is finished 3 Tension wedge sketch Note: During shaker operation, the tension wedge may appear loose, operator should inspect shaker screen frequently and push or tense the wedge by hammer 4 Shaker deck angle adjustment Shaker deck angle adjustment refer to fig V. There are lifter, pipe, lifter pipe, scale indicator, scale, connection plate, etc. When we make adjustment, handle wheel rotary by clockwise, shaker deck angle will be larger; handle wheel rotary by anti clockwise shaker deck angle will be less. Shale shaker output angle adjustment can be operated under running and off. When finish the shaker deliver it, the shaker deck is 0°. When user operate shaker, according to drilling mud property and flow rate on job site, and adopts same screen, the angle is higher, the treating performance will be better while treating capacity will be higher. When drilling fluid is leaking on shaker deck, increase deck angle can get rid of fluid flow away. Angle range: -2 ~ +8°， rated angle is 0~ +5° Resource Box : The author of the article recommends desander for everyone.