Mud Solids Control Equipment

GN will show a 14 inch bowl decanter centrifuga at OTC, after the show, it will be sold out to South America. To length the service life of decanter centrifuga in drilling fluids separation, proper installation & maintenance is necessary.

At present, GN provide the decanter centrifuga below:

By bowl speed: high speed decanter centrifuga, middle speed decanter centrifuga y VFD decanter centrifuga

By bowl diameter: 14inch bowl, 8.7 inch bowl, 18inch bowl y 22 inch bowl decanter centrifuga

By speed adjustable o no: fixed speed decanter centrifuga y VFD decanter centrifuga

By screw propeller protection method:　coating with tungsten alloy o welding with tungsten carbide tiles

Totally we have GNLW223, GNLW363, GNLW452, GNLW453, GNLW553 series centrifuga. The main components of GN decanter centrifuga are as below:

1 bowl drive motor 2 screw conveyor drive motor 3 gear box 4 screw conveyor 5 bowl 6 hydraulic coupling 7 skid 8 vibration isolator 9 collection box 10 solids discharge chute 11 feed tube 12 fluids discharge churt 13support bracket

Among them, gear box, feed tube and screw conveyor is the most wearable parts, you need regular maintenance on them.

Continue reading “Decanter Centrifuga”

Drill cuttings are separated by shale shaker, decander, desiler, decanter centrifuge, and collected by screw conveyor or vacuum unit , for further separation of vertical cutting dryer & decanter centrifuge.

In an ideal situation, all drill solids are removed from a drilling fluid by solids control equipment on a drilling operation. The two primary sources of solids are chemical additives and formation drill cuttings. Drill cuttings are contaminants that degrade the performance of the drilling fluid. If the drill cuttings are not separated, they will be ground into smaller and smaller particles that become more difficult to remove from the drilling fluid.

Most formation solids can be removed by mechanical means at the surface. Small particles are more difficult to remove and have a greater effect on drilling fluid properties than large particles. The particle size of drilled solids incorporated into drilling fluid can range from 1 to 250 microns (1 micron equals 1/25, 400 of an inch of 1/1000 of a millimetre).

Continue reading “Drill cuttings separation”

Whatever the drilling is, if only there is mud system, you will have mud mixing and agitation issues after a period of drilling.

Mud mixing equipment

GN jet mud mixer is specially used for mud mixing. GN Jet mud mixer is composed of a venturi type hopper and a centrifugal pump, we have 4 models available, GNSL150-45S,GNSL150-35S, GNSL100-25S,GNSL100-25M with 1320gallons/min, 880gpm, 400gpm and 264gpm mixing capacity.

How a venturi hopper work?

The fluid velocity must increase through the constriction to satisfy the equation of continuity, while its pressure must decrease due to conservation of energy: the gain in kinetic energy is balanced by a drop in pressure or a pressure gradient force. An equation for the drop in pressure due to the Venturi effect may be derived from a combination of Bernoulli’s principle and the equation of continuity.
Mud agitation equipments

Mud agitator is mainly used for mud agitation, sometimes for mud mixing. Also in some applications, vacuum degasser also be called a” big mud agitation equipment”.Mud agitator is composed of electric motor and gear box, the popular connection method is direct connection, in some countries, they still use shaft connection mud agitator.

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GN has 4 units of poor boy degasser in stock, in addition, we have 9 units of flare ignition device in stock, which is worked together with poor boy degasser as safety equipments in the oilfield drilling.

The poor boy degasser model in stock:

Model	GNZYQ1000G
Main body diameter	1000mm
Capacity	240~320m3/h
Inlet pipe	4″
Mud Output pipe	10″
Gas discharge pipe	8″
Weight	2000kg
Dimensions	2000×2000×5860mm

How poor boy degasser work to be anti-H2S?

( harmful gas , including but not limit to H2S)

1^st way: The main material of the poor boy degasser body is 16Mn(Q345A), which is low alloy, high strength steel.

2^nd way: By 3 layers of Marine Anti-Corrosion Zinc Rich Expoxy Paint:

(1). Sand Blast Treatment before painting.

(2). Two pack Epoxy zinc

(3). Two Pack Epoxy hi-build containing anticorrosive pigmentstwice.

(4). Surface pigmented with high quality light fast  PU pigments

To buy poor boy degasser in stock, welcome to contact GN solids control.

Here share some new photos taken at CIPPE 2013( the largest petroleum show in Asia), which is held in Beijing at New China International Exhibition Center.

We take a lot of new equipments there, mainly divided into 3 sections:

1) 1 set of complete 500gpm trailer mounted mud system) for HDD( horizontal directional drilling)

2)1 set of drilling waste management system( trailer mounted) for drilling cuttings treatment

3)22inch big bowl big volume centrifuge GNLW553G

4) Mini mud cleaner (desander cone only),shaker screens

They include all GN main applications, HDD& CBM, oil & gas drilling solids control & drilling waste management. Generally speaking, the oil show is successful. Most solids control manufactures in China & in USA shared their new developed equipments. For example, trailer mounted mud system, Flocculation unit, Continue reading “GN at CIPPE 2013 Oil Show”

GN has 6 units of flare igniters in stock, they are widely used for oil & gas drilling operations, usually works together with GN own designed mud gas separator. The flare igniters are used for connecting to the gas discharge line of mud gas separator, and fire the dangerous gas from the drilling mud like H2S. GN manufacture the flare igniter according to API &ISO standard, which meet most of the oil industry applications.

flare igniters in stock

The upper part of the flare igniter is stainless steel, and it is designed for rain proof , water proof in the oilfield. The major components for the electrics are from famous brand like Siemens or Schneider. The power of the electric can be directly from industry normal power, or users can charge the battery and take the unit for remote areas application. GN flare igniter is with remote control, and PLC is optional available for less manpower notice for continually and automatically working.

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GN has 6 units of vacu-flo degassers for sale, with electricity 440V/60HZ, 3phase, explosion proof and flame proof. It is well packaged and ready for shipment. If you have requirement on Vacu-flo degassers or vacuum degassers for your drilling mud system, pls contact GN immediately.

Technical specs of Vacu-flo degassers for sale

Model	GNZCQ270
Main diameter	800mm
Capacity	1200gallons/min
Vacuum	0.030~0.050Mpa
Ratio	1.68
Efficiency	≥95%
Motor power	22KW
Vacuum Power	3KW
Rotary speed	870r/min
Dimension	2000×1000×1670mm
Weight	1350kg

Note: You do not need feed pump for GN vacu-flo degasser.

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Mud guns are meant to provide supplemental or primary mixing in mud tanks depending on the number being used and the pit size. They are best used in tank corners to keep solids from settling and a mud agitator is placed in the tank center.

How to operate the mud gun?

A. Safty information

TURN OFF. LOCK OUT, and TAG OUT the electrical power supply to the pumps feeding the mud guns before servicing.

Inspect the unit regularly, and replace damaged or worn components only with parts supplied by the original equipment manufacturer.

Before entering a mud tank for any reason, the mud agitators should be locked out and tagged out.

B. General maintenance

1. Grease the swivel once a week. Add (2) shots of a multipurpose NLGI no 2 grease.

2. Visually inspect the mud gun assembly for any leaks, loose fittings once a week. Repair as required.

3. Inspect mud gun jet nozzle for excessive wear. The nozzle has a 5/8” bore when new. The nozzle should be changed when the bore is 7/8” or higher. This should be done once a month.

Once installation is complete, the unit can be started by turning the feed pump on. The direction of discharge may be modified to suit the operators requirements by rotating the swivel.

How to calculate the mud gun qty on a mud tank？

Continue reading “How to operate a Mud gun?”

Ditch Witchis an American brand of underground construction equipment, the company is a source for trenchers, vibratory plows, backhoes, electronic guidance and locating tools, drill pipe, down hole tools, chain, teeth and sprockets, vacuum excavators, excavator-tool carriers, and compact utility machines.

Ditch Witch horizontal directional drill  is widely used all of the world , GN solids control provide horizontal directional drilling mud system/fluids treatment system for HDD rig. The basic features of such HDD mud system are compact, efficient, portable. It should be with the following functions:

1 recycling of drilling fluids from the mud pit, to re-use for the rig and less influence on the environment

2 Easy to be moved from one jobsite to another

3 compact footprint, do not need to disassembly any equipments during road transportation

Continue reading “Ditch Witch Directional drill mud system in Brazil”

What is the difference in operation between positive displacement pump and centrifugal pump?

Positive Displacement Pumpswill not p roduce the same flow at a given speed (RPM) no matter the discharge pressure.

Positive Displacement Pump must not be operated against a closed valve on the discharge side of the pump because it has no shut-off head like Centrifugal Pumps. A Positive Displacement Pump operating against a closed discharge valve, will continue to produce flow until the pressure in the discharge line are increased until the line bursts or the pump is severely damaged – or both.

The positive displacement pump can be applied as

• rotary lobe pump
• progressing cavity pump
• rotary gear pump
• piston pump
• diaphragm pump
• screw pump

When positive displacement pumps serve as a screw pump for feeding drilling fluids decanter centrifuge, when you change the frequency of the main motor through the VFD control panel, the treating capacity of decanter centrifuge will change, so the flow rate need to be lessed.

Continue reading “Positive displacement pump for sale”