Oct 15

Mechanical sealing for centrifugal pump

Centrifugal pump is the regular pump use for solids control system and drilling oil system,GN solids control try supply reliable pump to every client

Mechanical seal as important point to decide pump’s quality and service life,was pay attentioned by GN solids control

The mechanical seal is simply a method of containing fluid within a vessel (typically pumps, mixers, etc.) where a rotating shaft passes through a stationary housing or occasionally, where the housing rotates around the shaft.

When sealing a centrifugal pump, the challenge is to allow a rotating shaft to enter the ‘wet’ area of the pump, without allowing large volumes of pressurized fluid to escape.

To address this challenge there needs to be a seal between the shaft and the pump housing that can contain the pressure of the process being pumped and withstand the friction caused by the shaft rotating.

Here we compare two different way

Traditional method

Gland packing is still commonly used in many applications, however increasingly users are adopting mechanical seals for the following reasons:;

  • The friction of the shaft rotating wears away at the packing over time, which leads to increased leakage until the packing is adjusted or re-packed.
  • The friction of the shaft also means that packing also needs to be flushed with large volumes of water in order to keep it cool.
  • Packing needs to press against the shaft in order to reduce leakage – this means that the pump needs more drive power to turn the shaft, wasting energy.
  • Because packing needs to contact the shaft it will eventually wear a groove into it, which can be costly to repair or replace.

Why choose mechanical sealing

  • No “visible” leak – seals do leak vapour as the fluid film on the faces reaches the atmospheric side of the seal faces.
    • This would approximate to 1/2 teaspoon a day at normal operating pressures and temperatures, if it were captured and condensed.
  • Modern cartridge seal designs do not damage the pump shaft or sleeve.
  • Day to day maintenance is reduced as seals have inboard springs which make them self-adjusting as the faces wear.
  • Seals have lightly loaded faces which consume less power than gland packing.
  • Bearing contamination is reduced in normal operation as the lubricant does not become affected by seal leakage and wash out.
  • Plant equipment also suffers less from corrosion if the product is contained in the pump.
  • Vacuum can also be sealed with this technology, a problem for packing as air was drawn into the pump.
  • Less wasted product will save money, even water is an expensive commodity and less clean up of the area will be needed.

To give client’s suitable product,GN solids control will always develop the design and improve service

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Oct 06

GN will join ADIPEC 13-16 November 2017 (the Abu Dhabi International Petroleum Exhibition and Conference)

Booth Number:10250

We can meet at Abu Dhabi and disscuss how to make solids control more efficiency and provide better service

Our new product plan and supply advice will discuss with you at ADIPEC

Recently, GN received many good comment on theshaker screen performance on site. also, it means the the developing on screen fabrication technology.
For now, GN’s shaker screen facility is able to fabricate the replacement screen for almost all the famous brand in the industry. freshed developing composite frame screen can proved onsite for working time 300~700 hours according to working condition with various mud composition, temperature etc.
To keep reliable quality, GN also designed strong package box for the screen. From screen to packing, both give a magnificent and classy impression. The package is provide with or without GN Logo for clients’ resale purpose.

ADIPEC is one of the world’s most influential events for the oil and gas industry. As a premium exhibition and conference platform, ADIPEC hosts hundreds of speakers, thousands of exhibiting companies and tens of thousands of trade professionals from around the world.

The Abu Dhabi International Petroleum Exhibition and Conference (ADIPEC) 2017 will be the premier meeting place for energy ministers and C-level executives from the world’s oil and gas giants that will convene under the theme: “Forging Ties, Driving Growth.” It is expected that there will be more than 200+ sessions across the Technical and Non-technical conferences.

ADIPEC’s inaugural 2016 Security In Energy Conference brought together for the very first time, cyber and critical infrastructure security experts and oil and gas executives to discuss the real life security threats and challenges facing the oil and gas industry.

Offshore & Marine at the Abu Dhabi International Petroleum Exhibition and Conference (ADIPEC) has rapidly become a must-visit zone. The next – third – edition of the co-located annual ADIPEC event builds on the success of previous editions, attracting more exhibitors, more visitors and a larger conference stream.

The four-day event includes a waterfront vessel display area, over 8,000 sqm of exhibition space housing more than 150 exhibiting companies with access to 15,000+ professionals from around the world, plus a dedicated Conference theatre for a mixture of strategic and technical sessions.

Hope GN solids control and every visiter have a good time at ADIPEC2017

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Sep 24

Solids control system will meet different cutting point when running

Shale shaker use for size>70 micron solid particle as the important part of total system

As the first step,GN shale shaker use linear motion,can remove the big size cuttings,and keep high effectiveness,work for second step of whole system,solid&liquid separate result will effect rest solids control step

The applicable range of drilling fluid vibrating screen:

Ground / offshore oil / gas drilling / CBM excavation / Trenchless Directional Crossing / piling / waste water / mud treatment etc., primary and two or three stage solids handling of mud and liquid to be treated. mostly, it is the primary treatment of mud and solid liquid mixtures applicable to various environments.

 

Function

The performance can be expected and operation direct to watch . Shale shakers provide the advantage of not,easy manage and maintain,shale shakers can produce a sure dry cuttings discharge.equipment’s main job is remove as much solids as possible and reduce the solids loading to the next level, the shale shaker is the primary solids removal device. It is usually relied upon to remove all drilled cuttings coarser than the weighting material. Downstream equipment will often remove too much valuable weighting

Numbers shaker should be installed to process the whole circulating with the target of removing as much drilled cuttings as economically feasible. because as the important part of the system, need arrange enough quantity shale shaker and put at suitable place to achieve optimum economic performance of the solids control system.

The working principle

mainly by the screen frame, screen exciter, damping element composed of drilling fluid shaker, by the mechanical vibration is bigger than the mesh of solid and solid adsorption by mesh sieve out some less than. The drilling fluid returned from the well head flows from the feed tank to the surface of the vibrating screen. The solid phase is discharged from the tail of the screen and contains a liquid phase smaller than the solid phase of the mesh. The sieve flows into the drilling fluid system to complete the separation.

Safety operation of shale shaker for drilling fluid:

It must be determined that the transport locking device is removed prior to use. The equipment can not be repaired, moved or even removed by the use of the vibrating screen. The equipment shall be operated and maintained according to the safety instructions and warning signs given on the equipment.

Maintenance of mud drilling fluid vibrating screen:

According to the vibration motor safety warning, the motor rules, reasonable maintenance, such as filling lubricating oil, etc.;

In the process of use, the screen should be carefully observed, inspection and so on. The damaged screen mesh and the completely damaged screen shall be repaired or replaced in time;

Make necessary cleaning of vibrating screen and screen so that the screen can have a longer life, after each end.

In order to make the use of vibration screen to achieve the best, regularly and systematically monitor the overall situation of the vibration sieve and maintenance.

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Jan 26

Chinese Spring Festival of New Year is coming very soon. GN Solids Control will shut down the factory during the holiday for about two weeks. After 4th of Feb, we shall come back to office. No worry, GN sales will be reachable any time, even in the holiday.

It is the time to see the New Year in and see the old year out. At this point, we want thanks for all people who help the growth and development of GN Solids, especially for GN partners and clients. With the purchaser order and support from partners and clients, GN can grow into China leading solids control brand, to serve more company and service for more projects.

2017-new-year-article

About solids control equipment tender
When there is a tender, at least three solids control brand will compete to win the tender. What is the GN advantages when competing with US brand or other China brand ?
1) The first advantage of GN is on solids control equipment tender. Our sales people have strong reading ability to thick documents with quite a few pages, picking out the important parts, discuss about it and offer correspondence.
But GN generally doesn’t bid for overseas tender directly. We can support local company and the client can bid for tender in name of local company, but with technical support / commercial support from GN Solids Control.
2) GN can offer the most higher cost-effective solids control equipment from China. GN marketing position is only focus on high end client, with international standard products. Compared with US brand, GN can offer similar performance equipment with much better price. Compared with other China supplier, GN solids control product surely can work much better, no compares.

About registration to big companies
In the past years, GN Solids already successfully registered to many big drilling companies/ oil service companies. GN is registration supplier for CNOOC, PDVSA, NIDC, PDO, EDC, BAKER HUGHES, BAROID, etc.
In the New Year, we will be ready to register into supplier for more companies.

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Mar 18

The client is local drilling client for HDD project. The client is providing water well drilling contract to government companies, government oil drilling companies etc. Last year in Feb, 2015, the client bought two sets mud cleaning system. Each set mud system only with one mud recycling tank, mounting with one set shale shaker & one set mud cleaner.

Recently, the client is requiring one more compact mud system for water well drilling, 500gpm system with two tanks. One shaker tank is with shale shaker and mud cleaner, one mud mixing tank with agitators or centrifugal pumps.

 

Simple introduction of GN 500gpm mud system as below.

One shale shaker mud tank system including: one set shale shaker, one set mud cleaner, two sets centrifugal pumps. The shale shaker is GN patent 3 panel shale shaker, which have over 5 years jobsite experience. The shaker can work well in different hard conditions. The mud cleaner is GN 3 panel mud cleaner with GN compact design, down deck shaker and desilter cones. Another tank is mud mixing tank with mud agitators, mud guns and mud hopper for chemical mixing.

Except for this mud system, GN drilling waste management equipment is also very popular in the world.

Waste management centrifuge: GN decanter centrifuge is working after replacing USA brand centrifuges. The centrifuge can work for solids control, waste management, waste water treatment ect.  In solids control application, 2500rpm is generally used for mud weight cutting, and 1800rpm to 2000rpm is generally used for barite recovery.  In drilling waste management, 2500rpm to 3000rpm is generally used for removal the fine solids. In waste water treatment, higher speed centrifuge is required after chemical enhancement.

Vertical cuttings dryer is also called VG dryer, VG dryer can treat the drilling cuttings discharged from shale shaker, the OOC after VG dryer can reduce to about 3% to 5%, and the dry solids can be collected by cuttings skips and transport by trucks to a cuttings center for final treatment.

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Jan 21

GN Solids Control just finish one sets mud mixing system for Middle East Client, the client is engaged in HDD drilling project. The client buys the system for mixing Bentonite / barite, as mud mixing system for project.

The Bentonite / Barite mixing system including two parts.

Part 1: mud tank system with mud gun & mud agitators, walkways, handrails, ladders, pipelines, clean gate included.

Part 2: mixing hopper skid with 2 sets mud hopper, 1 sets centrifugal pump, high steel framework to support the Bentonite big bags.

2016 GN mud mixing system

The clients bought one set 500gpm mud system in year of 2013. The performance of the 500gpm mud system is still very good after 2 years working condition. The 500gpm mud system including:

One set 500gpm shale shaker, working as first phase separation. GNZS703E-HB shale shaker is GN patent shaker with 3 panel shaker screens. Compact design and good performance can help to improve the drilling efficiency in a large degree. GN good price spare parts and short delivery time is also good support for clients.

One set 500gpm mud cleaner with deck shaker & 1 ea desander cone & 8 ea desilter cones, working as second & third separation equipment. For HDD drilling project, centrifuge is only required for some special stone layers.

GNLW452C decanter centrifuge with 1800rpm bowl speed can remove solids 5 to 10 microns. The treating capacity can reach to 120gpm to 200gpm depending on the feeding material conditions and output conditions.

Mud tank equipped with mud agitators, mud guns, mixing hopper, mixing pump, transfer pumps etc.

GN Solids Control is China leading manufacturer for solids control equipment & drilling waste management equipment. This is for oil drilling industry.

For HDD drilling project, compact mud cleaning system is required. And we export many mud cleaning system for overseas clients and China largest HDD client – CPP.

If you need some mud system / solids control equipment, pls contact us freely.

GNMS-500GL_mud_system_working_at_HDD_rigsite

written by admin

Jun 04

GN high G shaker for water based mud drilling cuttings treatment, have two models for choose. One model is only High G shaker without beneath tank.  In this case, the operator should design one cement pit or separate mud tank to hold the liquid part after High G shaker.  The other model is High G shaker with beneath tank for fast use.

After High G shaker, high speed and variable speed centrifuge will be used for fine solids separation. GN Solids Control design decanter centrifuge with height adjustable skid for convenient use.

Recently, we have one drilling waste management service customer who buys 1 sets high G shaker with beneath tank and 1 set variable speed centrifuge with high skid. The detailed technical specifications as below:

1) High G shaker with beneath tank: The shaker is GNZS594HGE-LD shaker with 4 panel shaker screen (composite material frame screen and steel frame screen both available). The drying time should be longer than 2 panel or 3 panel shaker, and the performance should be much better. The shaker with hopper type feeding, total height is much lower than weir type feeding or box type feeding, match better with drilling cuttings treatment job.

high g shaker with beneath tank

 

Continue reading »

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Apr 28

GN Centrifugal pumps with star-delta starting control panel are widely used in different jobsites in oil & gas field. The centrifugal pump can used for mixing bentonite, transferring drilling mud in solids control system, charging mud pump and working instead of mud pump is some special cases.

gn centrifugal pump for mixing bentonite

1) The pump control panel

For small pump with below 22kw motor, generally direct starter is OK.

For bigger pump with motor between 30kw to 75kw, star-delta starter is necessary. These kinds of starter will lead to high prompt start current and then the current will go down to normal degree after normal operation.

For larger pump with above 55kw motor, soft starter is recommended for easier operation. These kinds of starter current will arise smoothly and no need much bigger generation to match.

2) Centrifugal Pump quality

Continue reading »

written by admin

Aug 18

Bottom type mud guns are the drilling mud gun installed close to the bottom of the tank which 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.Bottom Type Mud Guns are designed for submerged service in steel pits.

Bottom Type Mud Gun

Bottom Type Mud Gun

Specification of GN Bottom Type Mud Guns

NJQ Series Mud GunTechnical Parameters

Model GNNJQ50-3 GNNJQ80-3
 Diameter 2"(φ50) 3”(φ80)
 Valve ID&pressure 50mm/3.2MPa 80mm/3.2MPa
 Interface size 2" 3"
Work Pressure ≤1.6MPa ≤1.6MPa
Nozzle number 3 3
 Rotation angle 120° 120°
Remarks  Rotation availaible

GN Solids Control is one of the top  mud gun manufacturers in China,and with sales and services around the world.

Bottom Type Mud guns are to be located in the tank corners. The centerline of the nozzle is to be located about 6” off the tank bottom.

written by admin

Jul 15

GN solids control will attend Argentina Oil & Gas Expo 2011 in Otc. We just came back from Brazil Offshore 2011 last month with big success.We will attend the show with our exclusive agent in Argentina together, welcome to contact us by English, Portuguese, Spanish, Chinese languages.We have experienced Technician and Sales there to be ready to service for you.

GNZS703 shale shaker

GNZS703 shale shaker

General info. about

AOG 2011

  • Show Name: Argentina Oil & Gas Expo 2011
  • Show Time: 10th to 13th Otc 2011,14:00~21:00 p.m.
  • Venue: La Rural, Buenos Aires, Argentina
  • GN Booth numberQ12
  • GN Booth Area: 38m2
  • What GN show? GLW355X1250N high speed decanter centrifuge and GNZS70-3 linear motion shale shaker, etc, welcome to check our equipments during the show.

GN equipments and system can be used for the following projects:

1 HDD mud system

2 onshore drilling solids control system( oil & gas drilling, water well drilling, coal-bed methane drilling, geothermal well drilling,etc)

3 drilling waste management

4 liquid mud plant ( to prepare for clean mud)

high speed decanter centrifuge

high speed decanter centrifuge

What will be exhibited in the show?

Continue reading »

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