Author: gnadmin

Applications of Explosion proof cable

In some job site condition, such as mining industry, oil and gas drilling field, or other flammable mixed gas environment, explosion proof cable is widely used. It can be used for the contacting of motors, control panels or the explosion proof control system. All these environments are with flammable and explosive gases. If the common cable be used, even a slight friction generated between the plug and the socket, or even subtle spark will be risk. So we have to use explosion-proof cable tray. It is professional and more reliable.

Features of Explosion proof cable

The same with normal cable, explosion proof cable has leakage protection. There is a small built-in leakage switch for explosion-proof cable. In case of leakage accident, the leakage protection switch will power off in 0.03 seconds. At the same time, in order to avoid sparks and electrostatic etc… to cause explosion dangerous situation, all of the configuration including  socket, plug, handle are aluminum, and after spray treatment; plug housing and rotary table adopts aluminum alloy, which is durable, safe and reliable.

Application scope of Explosion proof cable

1) Zone 0, Zone 1, Zone 2 Hazardous area

2) IIA, IIB, IIC class of T1 ~ T6 group explosive gas or steam environment;

3) combustible dust environment 20 zone, 21 zone, 22 zone;

4) Indoor, Outdoor (IP54, IP65)

Technical characteristics

1)The turntable and explosion-proof plug housing is made from casting aluminium alloy, surface is sprayed with PU;

2) With build in leakage protection, circuit breaker;

3) With ON OFF indicating on pin points, the grounding contact is longer than its main contact;

4) There are interlocking device on plug and socket. It can plug after power off;

Technical parameters of Explosion proof cable

1) The rated current: 16*2, 32*2

2) The rated voltage: AC220V/380V

3) Explosion-proof grade: Exd II BT4/T5/T6

4) Protection grade: IP54, IP65*

High G drying shaker, also named high G dryer, it is a kind of shale shaker utilize high G force to reduce the water contend in water based drilling cuttings.

Applications of High G drying shaker for water base mud

Unlike solids control shale shaker, high G drying shaker is used to treat drilling cuttings comes from solids control shale shaker, desander or desilter. There is noamally 4-panel shaker screens for high G drying shaker. More shaker screen enable a longer route of mud going through the screen machine.

High G shale shaker cannot be used in solids control system directly. The high G force will destroy the mud contend of the drilling fluids. If it is really need to use high G shale shaker in solids control system, the G force should be reduced.

High G drying shaker is used to treat water base mud drilling cuttings, while vertical cuttings dryer used to treat oil base mud drilling cuttings.

Features of GN brand high G drying shaker

GNZS594HGE-LD is a typical model high G drying shaker. It is a 4-panel shaker utilizing composite material shaker screen 1165×585mm. It is common side shaker screen easy to be interchangeable with other brand shakers.    

Unlike other brand, GN brand high G drying shaker utilizing stainless steel material for shaker deck for long lifetime.

Synchronous shaker deck angle adjustment device. It is GN patent design. Both the shaker deck angle can be changed equally when you adjust from either side.

Other equipment used together with high G drying shale shaker

When drilling cuttings discharged from solids control shale shaker, desander and desilter, a screw conveyer will be used to transfer the cuttings and feed to high G drying shaker. After high G drying shaker, the clean fluids will be transferred to high speed decanter centrifuge to separate the fine solids inside.

If there are high content fine solids over centrifuge separation scope, dewater unit should be used.

For more information of GN drying shale shaker, decanter centrifuge or dewatering unit, please contact GN group freely, or send mails to vivi@gnsolidcontrol.com

The mud cooler is for the offshore oil and gas business, additionally the energy comes. The mud is cooled within the heat exchanger by suggests that of a glycol/water mixture that in its flip is cooled down within the second heat exchanger by seawater/ water. The glycol/water mixture is current through the system by suggests that of an electrical driven centrifugal circulation pump.

GN Solids Control has manufactured mud cooler equipment.The glycol/water mixture is monitored by AN oil detection device, to observe and avoid any oil leak to the atmosphere. The plate heat exchanger will be equiped with an in depth vary of plate materials: Hastelloy, metallic element and numerous forms of chrome steel.; virtually any material will be processed due to trendy production facilities and well thought-out tool style.

The mud cooler offers the following advantages:

• Extremely suitable for mud cooling for HP/HT drilling
• Extends useful life of drilling equipment
• Is environmental friendly
• Improves working conditions

1. The Drill Cool System   http://www.drillcool.com/ 

The Drill Cool System options 2 exclusive and distinct technologies: The Geo-Cooler lubricator excitement, and also the Insulated Drill Pipe (IDP). whereas these fluid temperature management devices will be hired severally, the collective use of each technologies will cut back drilling mud/fluid temperatures by quite fifty p.c at the BHA (Bottom Hole Assembly).

2. Flow Process Technologies, Inc. http://www.flowprocess.com/ 

All Mud Cooling System packages area unit workshop assembled. Tube bundle is removable for correct maintenance and cleansing to satisfy restrictive tips. Then tested before cargo to client location.

Packages shipped with relevant Certification/Documentation, as well as instructions. device Package hot swayback in an exceedingly galvanized end for corrosion protection.21’ 2” L x 8’W x seven.8H (As pictured on top of inside shipping frame)

Approximate Wt. 18,000 lb.

3. Lynsk& Company Pte Ltd  http://www.lynsk.com

The cooling system, featuring Alfa Laval plate-type heat exchanger for cooling the drilling fluid for high pressure/high temperature wells, for increased safety. The unit is very compact and skid mounted, consists of either a single or dual plate heat exchanger depending on process requirements designed in accordance to ASME codes and standards.

4. PUMA land cooler by ALFALAVAL  http://www.alfalaval.com

The PUMA system effectively reduces mud temperature, and is designed for continuous, unmanned operation in harsh environments, providing both maximum reliability as well as ease of service.

5. Stacey Oil Services Ltd. http://www.staceyoil.com/ 

Related Articles: GNLW452 Decanter Centrifuge Special for Barite Recovery

Desander, desilter and mud cleaner is the most common type hydraucyclone separator machine used in mud cleaning system, like system for oil and gas drilling, water well drilling, Geothermal drilling, Coal Bed Methane drilling, Horizontal Directional drilling and so on.

Hydraucyclone separator desander desilter and mud cleaner is used after shale shaker, and then dessander, desilter is used after desilter. Per the jobsite condition and the mud drilling rig request on mud, only desander or destiler separator can be used, or none of them be used.

There are different type of hydraucyclone separator. They have different features, users can choose the suitable model.

Design 1: Only Desander or desilter hydraucyclone assembly, without underflow shale shaker.

Option models for desander: GNWSE-2S / GNWSE-3S

Option models for desilter: GNWSE-12N / GNWSE-16N

Strong point: The simple type desander and desilter is with side-discharge deisng. It is with small footprint. And price lower.

Weak point: Hydraucyclone is not D100 separator. If there is no shale shaker separator under the hydraucyclone parts, performance will not be very good. Some big size solids may flows into the tank mud system.  

Conclusion: If there are limited space on tank top and users want to save cost. desander and desilter without underflow shale shaker should be a good choice. It is normally used is underground construction system and compact mud system but not used for deep oil and gas drilling.

Design 2: Desander desilter with a small size under flow shale shaker.

Option models for desander: GNZJ752E-1S / GNZJ752E-2S

Option models for desilter: GNZJ752E-8N / GNZJ752E-12N

Strong point: With separate shale shaker under the hydraucyclone assembly, drilling fluids can be separated by screens before falling into tank system. And price is good.

Weak point: The small size shale shaker cannot get very good separation result, and big capacity not available.

Conclusion: It is normally used in compact mud system for HDD, CBM etc… And some workover rig mud system.

Design 3: Desander desilter with a big size under flow shale shaker. Both desander and desilter hydraucyclones can be mounted in the same shale shaker. Compact design and best separation. The price the most high among the 3 designs and performance best. When move the hydraucyclone assembly . It can be used as a separate solids control shale shaker.

Above is the introduction of the models, users can choose the suitable design per its detailed condition.

What is Geothermal drilling

Geothermal drilling is used for geothermal steam and hot water well drilling. It is a special technology and necessary method for the exploration, exploitation of geothermal fluid.

For the high temperature geothermal drilling, drilling depth is generally 500 meters to 2000 meters, a little more than 2000 meters, mostly in 600 ~ 900 meters. Regariding to the conduction type geothermal field at low temperature, the average depth is 1800 meters, while the geopressured geothermal drilling can reach to 6000 meters depth.

Features of mud recycling system for Geothermal drilling

1) As the temperature of Geothermal drilling is normally higher. There should be mud cooler before mud recycling system and after mud comes out from well head.

2) There should be galvanized grating to cover the tank tops for a better heat-radiation. Checkered plate is not recommended for Geothermal drilling mud recycling system. The heat cannot come out well in this condition.

3) Normally, there is only desander cone in the mud recyclone system. Desilter cone is not used.

4) As the mud temperature is higher, PU hydraocyclone is not suitable for Geothermal drilling mud recycling system, while cast iron cyclones should be used.

5) And in some cases, geothermal drilling rig platform is low, it means the flow height from drilling rig to shale shaker is lower. It gives strict limitation on shaker tank design.

GN Solids Control got an inquire from a European Geothermal drilling company. They are searching for a mud recycling system for their 750hp Geothermal drilling, and they want a 3-tank mud system.

After communication, we know that their flow height is only 2.6m. Per their condition, we offer tech. proposal together with commercial proposal, customer satisfy and give us order soon. And the system will be dispatch to jobsite soon.

Below is the system proposal we offered for the 750hp Geothermal drilling rig.

1) Shaker tank #1: 6012×2200×1600mm

2) Mixing tank 2# and Storage tank 3#: 11500×2200×2350mm

3) Shale shaker linear motion

4) Desander separate

5) Mixing system and mud agitators