centrifugal pump

The centrifugal pump performance test should reach following requirements:

1) While doing performance test, the tested centrifugal pump should mount bearing and sealing as specified in the order.

2) If approved by the buyer, in order to not damage the sealing appointed on the order, or the test fluids is incompatible with original sealing, the pump can be test with replacement sealing

3) In any stage of the centrifugal pump performance test, it is not allowed any leakage over the rate of Standard ISO21049, or over the rate appointed between vendor and buyer.

If there is any leakage over the appointed rate during performance test, the centrifugal pump manufacturer should disassembly the sealing for maintenance. While open or disassembly the pump sealing, the operator should again do air test to the sealing.

While the centrifugal pump use water as performance test fluids, the fluids sealing suitable for water have no sign for leakage. It should double check the sealing performance per standard ISO21049:2004, and insure it is accordance with the zero visibility leakage standard.

4) If there was leakage, it should be test again after repairing the centrifugal pump sealing. And to insure the centrifugal pump have a good performance for sealing.

5) The lubrication oil pressure, temperature, and viscosity should be under the scope of the user manual offered to the buyer.

6) Regarding bearing request for pure oil mist lubrication system, it should be lubricated with suitable oil type.

7) All sealing parts and connection parts of the centrifuge pump should be checked careful to avoid leakage.

8) All alarming system, protection system and control system regarding centrifugal pump performance test should be checked, and adjust per test requirement.

After approved by all the aboved test, the centrifugal pump is qualified for delivery. That is why GN Solids Control, as one the world largest solids control and DWM manugacturing, can insure the quality of every its pump.

FEATURE OF GN SEREIS SHALE SHAKER FOR OIL FIELD MUD SYSTEM

As GN Solids Control mainly focus on top domestic market and international market with top quality oil field mud system and equipment. GN have a higher standard than other Chinese company:

1) Heat treatment on complete shaker deck.
2) Vibrating Motor: Italy OLI brand, IEC Ex and ATEX Option available.
3) Electrical components: SIEMENS, Schneider Brand.
4) Shaker Deck Material: Q345 High Strength alloy material.
5) Maritime Heavy anti-corrosive Japan Kansai paint;
Epoxy zinc rich prime, thickness 75 μ;
Epoxy medium twice; thickness 250 μ;
Polyurethane finish paint twice, thickness 70 μ;

GN SHALE SHAKER MODEL LINE FOR FOR OIL FIELD MUD SYSTEM

According to different design, GN shale shaker can be divided into Linear motion shale shake, Balance elliptical shale shaker, double deck shale shaker, single deck shale shaker and High G dryer shale shaker. For better meet the requirements of small mud system, further reduce total cost of the user, GN promoted a MINI shale shakerGNZS752 and GNZS852 with 2 panel shaker screen. Then users have a wider choice according to their system requirements.

EXTEND APPLICATION OF GN SHALE SHAKER FOR OIL FIELD MUD SYSTEM

GN shale shaker can matched with a desander and/or desilter cone assembly, and worked as mud cleaner.
The desander/desilter cone assembly is mounted to shale shaker with bolts, easy for re-movement. User can choose the suitable application per the rig site situation.

HOW TO GET MORE INFORMATION ABOUT GN SHALE SHAKER

GN have international office for difference market, you can contact any one near to you. Detailed contact information you can search in GN website: Contact GN Solids Control Dealers around the world.

GN Brand shale shaker screen

Firstly, GN Solids offer high quality frame screen and composite material screen for GN brand shale shaker model: GNZS703 and GNZS853 high G. GN own brand shale shaker are widely used in oil and gas drilling field, waste management field, and other drilling applications.

Derrick replacement shale shaker screen

Derrick repalcement shaker screen

It is the most hot sold screen model from GN Solids Control (Derrick 500 series and Derrick48-30 series). It adapts the advanced powder glue for stick under high pressure.

Screen rubber is capable for high temperature mud and both Oil base mud and Water base mud. GN replacement Derrick shale shaker screen is hot sold as the NO. 1 Screen model as its high quality and reasonable price.

Swaco Mongoose replacement screen

Besides GNZS703 composite shale shaker screen, GN can also make high quality replacement for Swaco Mongoose with composite material. Customer buy it containers by containers and give us repeat oder periodically.

Brandt Shale shaker screen

Brandt King Cobra is one the common shale shaker model from Brandt company. GN can make good quality replacement shale shaker screen is for it.  And it sold well in Middles East, Affrica and Europe.

GN owns the most advanced shale shaker screen processing machine, strong technical force, and strict quality control team. GN products have been exported to over 60 countries worldwide. All GNscreen package per API RP 13 C standard. And GN have made OEM shaker screen for many famous company.

For more information about GN Solids Control, contact GN.

Waste management system application

Double deck GNZS703D shale shaker adapt high G force (≤7.5G) and a double deck. Some users choose it as a better replacement of high G shaker. It can better dry cuttings with the 2 screen deck.

Some users will request to add steam coil for double deck shale shaker while used to treat waste cuttings. GN Solids Control have experience and can customize per users requirement.

Compact mud system application.

Double deck shale shaker GNZS703D used for small mud system to make the system for compact. Usually, the bottom deck will be used as shale shaker, while the upper deck used as mud company together with desander/desilter cone assembly. the total machine takes a smaller footprint but act as 2 separated machine. And surely, the cost is much lower than a separate shale shaker and mud cleaner.

Disadvantages

Although there are many advantages, but there are also many operators they do not like double deck shale shaker, as it is not convenient to change the bottom shaker screen. It is the main problem of shaker manufacturer faced now, and need to be improved.

Bentonite mud mixing system is composed of mixing hopper and centrifugal pump.

It can be composed by 1 each mixing hopper and 1 each centrifugal pump. it is called single Bentonite mud mixer. Or 2 each mixing hopper and 2 each centrifugal pump for tandom bentonite mixer. 

Application of Bentonite mud mixing system

Betonite jet mud mixer is used to make up drilling fluid or increase total amount of the drilling fluid, change the fluid density, viscosity, and dehydration. When making up again, put the materials of drilling fluid (such as betonies and barite powder) and corresponding chemical additives (such as polymer) into the recycle tank through the jet unit. If put them directly, the materials of drilling fluid and chemical additives will be deposited largely or dump together and we can’t obtain diffused and well-proportioned drilling fluid.

Features of GNSL series Bentonite mud mixing system

GNSL series jet mud mixing device is a unit used together with the solid control system for petroleum drilling. It is suitable for drilling from 1,500 meters to 6,000 meters and can strengthen and make up drilling fluid through the fixed control system horizontally. The unit includes one sand pump, one jet mixing funnel and one jet mixer that are installed in a base with pipe valves. It is safe and stable and can be moved conveniently.

Fast movement mobile system is widely chose for small mud systems, like water well drilling. In this case, the rig operators no need to source crane machine once the system need to be moved to other place.

From China to Australia, to Africa, to Middle, GN has configured our Mobile Fast Move Mud Systems to fit the needs of customers World Wide. With Easy Rig Up and Rig Down, Mud Mixing Capabilities, Degassing, Solids Control Equipment, Small Foot Print and Reduced Transportation cost, these systems are growing rapidly in popularity.

Regarding mobile system for water well drilling, it is usually small system, with a small capacity tank on the trailer top, a small capacity shale shaker (GNZS752), and a smalle size mud cleaner with only desilter cone (GNZJ752-4N) and finally a compact mixing system:GNSL100-25M.

Being able to rig down, move and rig up in the shortest possible timeframe add’s greatly to increasing your bottom line and meeting client expectations. GN Solids Control has designed a range of mobile mud system that don’t require cranes to rig down or assemble to help you achieve your rig moving goals. The integrated mobile systems also reduce your HSE exposure as they do not require any crane lifts. So whether you need a fully mobile mud system or need to add additional storage to an existing rig, contact GN immediately to discuss how mobilizing your drilling fluid equipment can give your rigs the competitive edge.

Inside the tank, there are always some dead corner, where mud agitator cannot effect. In this case, mud gun will be used to flashing and agitating the dead corner to avoid fluid deposition. It usually used together with mud agitator.

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

How to choose the suitable mud gun:

The number of solids control mud gun depends on the size of tank. Usually mud gun installed with mud line of mud tank. According the inlet pipe size, there are 2’ mud gun and 3’ mud gun for option. According to different structure feature, there are two types of mud gun: fixed mud gun and rotary mud gun.

Design features of solids control mud gun:

A molded replaceable wear resistant polyurethane jet nozzle is used, with lift time as long as 2000 hour.

Three nozzle with 120° between each other. All tank corner can be covered by mud gun, even for fixed mud gun.

Locating the mud gun for mud recycling system:

·GN recommend to set a mud gun at every tank length simiar to tank width. Mud gun located on the middle of this length.

·Solids control mud gun inlet centerline aligh to mud tank central mud line.

The centerline of the nozzle is to be located about 6” off the tank bottom.

V-hopper above srew conveyor used to collect Cuttings and oily sludge from truck. If materials pour directly onto the screw auger from the truck, the auger may be damaged or crashed. In order to not damage the screw conveyor auger under the V-hopper, GN design some special design within the V-hoppe. Material will slow down grealy while pass a special beam and then fall into screw conveyor auger. Then it will not have damage to the auger.

The screw conveyor build under the V-hopper is used to transfer materials and cutting waste from the hopper to other screw conveyor/conveyors, and then transfered to upstream treatment equipment.

In one project, users use the sysyem to transfer drilling cuttings and industry oily sludge, The material is too much viscosity. In order to make it easy for transfer and separation, users use steamer line and hot water line for the system. In this case, GN equiped some lines of steam nozzle on each side of hopper and screw conveyor. The nozzles will be used to connected with outside steam line and hot water line. And in this case, a higher standard of sealing for the auger system required.

Features  of GN Drilling Cutting Extractor Dryer

The GN Vertical Cutting Extractor Dryer uses centrifugal force to dry drilled solids in oil or synthetic base fluids. A stainless steel screen bowl traps “wet” solids and accelerates them up 900RPM with G force up to 420. Liquid is forced through the screen bowl openings, while “dry” solids are extracted by the angled flights attached to the cone, which rotate slightly slower than the bowl. Tungsten carbide protects the flights from abrasive solids and ensures long operational life. This aids in maintaining a constant gap between the scroll and screen bowl, which is crucial for proper operation. GN cutting dryer has been done strict balance testing for all major rotary components to minimize vibration & noisy.

Drilling Cutting Extractor Dryer

Summary of the Drilling Cutting Extractor Dryer

EXTRACTOR Dryer is designed to remove NADF from drill cuttings exiting the shale shaker. The dryer is capable or reducing the oil on
cuttings to < 5% and to an overall total of < 6.9% when the centrifuge waste is taken into account. Excess fl uid is recovered after centrifugation
and returned to the active system for reuse. The system is not suitable for the treatment of water based mud cuttings.

Shale shaker vibration

Vibration of the shaker basket creates G-forces which help drive shear thinning fluids such as drilling mud through the screens. Vibration also conveys solids off the screens. Most linear motion shakers operate in the range of 3 to 4 G’s to balance throughput with screen life. G-force is a function of vibration frequency (rpm) and stroke length.

Top brand Linear motion shale shaker

But there are alway some misunderstanding on shale shaker performance, it should be avoided :

• “High-Speed” should not be equated with “high performance”.

Laboratory tests indicate that, in the normal operating range for linear motion shale shakers, lower frequency vibration and longer stroke lengths improve throughput capacity. Most linear motion shakers operate at 1200 to 1800 rpm.

• Avoid deck inclinations above 3˚.

High deck angles reduce solids conveyance and increase the risk of grinding soft or friable solids through the screens.

• Shakers are designed to accept either hookstrip or rigid frame screen panels.

Hookstrip screen panels are the most common and are usually cheaper, although cuttings wetness can be a concern due to deck curvature. Flat, rigid frame panels promote even fluid coverage, but can cost more.

• Shakers may have single or tandem screening decks. Single deck shakers offer mechanical simplicity and full access to the screening surface. Single deck shakers may be arranged to process mud sequentially as a “cascading” system to improve performance under high solids loading conditions. Tandem deck shakers offer improved processing capacity under high solids loading conditions when space is limited.