Author: gnadmin

Inside a solids control system, desander may be the second stage equipment, which removes solids particle size 40-100 nm from drilling liquids. Then your next is desilter getting rid of particle size 16-50nm from drilling liquids. While, cone(also called hydrocyclone) may be the functioning part for desander and desilter. Based on the size cone diameter, cones are called desander cones having a the diameter over 6’’ so that as desilter cones having a diameter under 6’’. Generally, 8’’ and 10’’ cones are generally utilized as desanders 4’’ and 5’’ cones are often utilized as desilters.

You might be interested in the way a cones works. GN Solids America will tell you the answer within the following paragraph.

In normal operation, feed slurry needs tangentially in to the interior from the cone inside a high-speed, leading to whirlpool effects within the cone. The swirling motion from the slurry drives the bigger and denser contaminants outward from the cone wall for the lower discharge port, as the more compact, lighter contaminants move towards the middle of the cone and venture out with the upper discharge port. The separation of solids from drilling liquids is completed.

GN’s desander and desilter cones are constructed with memory material, and switches into a detachable set up to become placed on a shale shaker.

HDD means horizontal directional drilling. Many people are wondering when HDD machine used? You see, you want to put pileline undergoud pipeline, but there is a huge river in the area. How did you do, to full up the river or change direct to pass it? No, it is huge work. With HDD machine, you can put pipes in a depth first, and then cross pipes under the river. Another condition like that, it requests to put some underground pipes for cable, for water, for natural gas, etc… in city area, but it is not possible to dig up the ground, there are buildings and constructed road on it. With HDD machine, things will be very easy.

World HDD maching / rig supplier

1) Ditch Witch

2) Vermeer

3) SANY

80T HDD machine is a most common side drilling rig. The high pressure is between 1000 to 2000 liters. 350~500GPM mud system is used for this rig size.

For different customer and different rules for discharge, there are different standard mud system.

If your 80T machine is for HDD, we recommend you GN350~500 GPM mud system.  

Simplify proposal as below:

1) GNZJ705E-6N mud cleaner for 2 phase separation. 1 each

It is a double deck shale shaker, with 6 each 4inch desilter cone above the shaker.

2) Centrifugal pump: 5’’*4’’, 22kw, 2 each

3) Mud gun: 1 each

4) Mud tank dimention: 6058x2250x1600 (the same dimension with 20ft container)

5) Slurry pump feeding for shale shaker, 11kw, 1 each

6) Light system and electrical control system.

We offer TURN-KEY solution. You only need to plug-in with our power and then press START of the system.

China Petroleum Pipeline Bureau (CPP) is the biggest HDD contract in China. It is a government controlled company. CPP have drilling actives worldwide, in China and outside China.

 

TBM is Tunnel boring machine, it is similar to piling. It is widely used for municipal construction, like subway, tunnel, etc… There are high content coarse rock particles generated during the process. It does not have high standard for mud quantity. No need separate to very small size. It request big capacity for a rough separation, like 120m3/h or 240m3/h mud systm.

Mud plant for TBM Tunnel boring machine

It is compact mud system with double deck shale shaker, and desander hydra cyclone above the shale shaker to used as a combination of mud cleaner. 10’’ Desander cone quantity varies from 1 ~2 for different capacity (120 CBM or 240 CBM). TBM mud system use steel frame screen (e.g. 0.3mm, 0.5mm, etc…) and desander cone. Desilter normally is not used in TBM drilling mud system.

TBM Tunnel boring machine supplier:

1) Akkerman Inc  for Trenchless Tunneling Equipment 

2) Alvenius Industrier AB (Sweden)

3) Associated Polymer Services Ltd Geotechnical and Tunneling Supplies 

CBM (Coal Bed Methane) is more and more widely used. As natural gas as a clean energy type become more and more polular.

CBM (Coal Bed Methane) mud system is similar to HDD (Horizontal Directional Drilling). Compared with TBM and piling, it has a higher request on mud quality.

Mud cleaning system used for CBM drilling:

1) Per different capacity, Shale shaker is single deck or double deck, and utilize shaker screen 2 panels, 3 panels or 4 panels.

2) Desander cleaner

3) Desander cleaner

4) Mixing machine

CBM (Coal Bed Methane) machine supplier:

1) Atlas Copco (America)

2) SCHRAMM (America)

3) Sany Heavy Industry (China)

Desanding plant for TBM and mud cleaning system for CBM us different. They are not changeable. Customer should specify the rig type before order. For any questions on compact mud system, you can contact GN group for solution.

Per different control system, there are fixed speed decanter centrifuge and variable speed control (VFD) decanter centrifuge.

Features of fixed speed control centrifuge

As the bowl speed and conveyer speed is fixed, cannot be changed, fixed speed control centrifuge is easy for operation and maintenance. And price lower compared with the same model VFD centrifuge.

Feature of variable speed control (VFD) decanter centrifuge

For the same model centrifuge decanter, VFD model cost more than fixed speed. Per International Explosion-proof standard, there should be positive pressured control panel for variable speed control for better cooling. It requests more professional on operators for the VFD decanter centrifuge.

For GN design VFD centrifuge, the bowl speed, conveyer speed and feeding pump flow are all flexible. Customer can change one or all of the 3 parameters to get the best separation performance in different jobsite. An and customer can change centrifuge parameter for getting the max. capacity centrifuge can reach.

Take GNLW363BG-VFD centrifuge for example, below steps show you how to find out the max. capacity of the centrifuge

1) For a bigger capacity, we should reduce the BOWL speed and increase CONVEYOR speed.

BOWL SPEED: 2000RPM

CONVEYOR SPEED: 40RPM

Pump running model set as AUTO

Then pump will running to the max. capacity it can reach.

2) Or you can try more settings to compare the capacity, with pump AUTO running:

a. Bowl 1600rpm, Conveyer 34rpm

b. Bowl 1800rpm, Conveyer 38rpm

3) The back drive motor is opposite rotating under low speed and high conveyer. If centrifuge shut down during running , reduce Conveyer speed.

4) For this centrifuge, the max. capacity will be not over 30cbm. As the pump max. capacity is 30cbm.

As quickly as the drilling site has been chosen, scientists survey the region to figure out its boundaries, and conduct environmental effect studies if essential .Drilling firm may perhaps require lease agreements, titles and right-of way accesses before drilling the land. For off-shore sites, legal jurisdiction has to be determined.

Right after the legal challenges are solved, the crew goes about preparing the land:
1. The land have to be cleared and leveled, and access roads might be constructed.
2. Simply because water is utilized in drilling, there should be a supply of water nearby. If there isn’t any all-natural supply, the crew drills a water properly.

For drilling fluids and cutting disposal .The group digs a reserve pit, which can be applied to dispose of rock cuttings and drilling mud during the Drilling Mud System, and lines it with plastic to shield the environment. If the web page is an ecologically sensitive region, for example a marsh or wilderness, then the cuttings and mud must be disposed of offsite – trucked away instead of placed within a pit.
For that reason, deciding on a appropriate solids handle system is essential for the job web-site to prevent polluting the atmosphere. Firstly, we will need know how several shale shaker might be applied for the job internet site and relative mud cleaner (http://www.gnsolidsamerica.com/mud-cleaner.html) for separating the fine particle. Secondly, the solids and cutting from shale shaker and mud cleaner are transferred by GN screw conveyer (auger) to the site for truck to delivery offsite or do additional course of action. Thirdly, GN decanter centrifuge is focused on separating the fine particle beneath 20 microns, which sustain the drilling fluids weight and retain drilling fluids clean. Finally, the drilling cuttings from shaker and drilling mud system still include fluids, which contaminate the soil if they’re directly buried. Consequently, GN-Solids-America vertical USA cutting dryer can dry drilling cutting to reduce the contamination and reclaim the drilling fluids.

All in all, deciding on a fantastic solids control technique is an critical portion for drilling. You could seek advice from with GN for solids handle unit.