Drilling fluids equipment

Rheological parameters and the physical meaning of the plastic flow patterns

① static shear strength (τs)

Start drilling fluid flow required minimum shear stress , which is a continuous measure of the strength of the space frame structure of the drilling fluid formed in the stationary unit area . Continuous space grid structure called gel structure, also known as static shear gel strength . Closely related to the static shear size and drill cuttings and drilling fluid suspension heavier material 's ability to stop the cycle . However, static shear force can not be too large, otherwise the pump difficult and sometimes choke drain formation . Adjust the drilling fluid and the dispersion of clay content , plus inorganic electrolyte membrane adjust the electrostatic repulsion and hydration repulsion between the particles of clay , plus measures to adjust the viscosity fluids like static shear stress .
 
② ultimate static shear force

Various drilling fluid system clay particles due to the irregular surface charge and hydrophilic uneven shape at rest is easy to form a network structure. The minimum static shear stress damage drilling unit volume mesh structure on the need, the drilling fluid called "extreme static shear force ."

③ dynamic shear force (τ0)

Line segment extended flow curve intersects the axis of a shear stress τ0, which is a hypothetical value , a measure of the strength of the mesh structure of the drilling fluid when drilling fluid is reflected in a laminar flow state . Factors that affect the value and size of the adjustment method is basically the same as the static shear .

④ plastic viscosity (μPV)

Bingham formula derived from that plastic viscosity plastic fluid rheology curve segment is the reciprocal of the slope , it does not change with shear force . Description is the viscosity of the system architecture to break speed equal to the speed of recovery time . It is a fluid phase between the particles in a laminar flow system the solid state , between the solid particles and the surrounding liquid phase intermolecular friction formed . Plastic viscosity of the drilling fluid solid content , shape and degree of dispersion of solid particles , the surface lubricity and viscosity of the liquid itself, and other factors . It is directly related to the drilling fluid suspension capabilities, its value should be moderate. If the viscosity is too high the plastic system , reducing the time needed , the solids  control equipment is generally used to reduce the solid phase solid phase content , increase inhibitory system, reduce the activity of the solid phase dispersion ; if urgent need to reduce the dilution water can be added . If you want to increase the viscosity of the system can be added to the plastic polymer organic polymer thickener or clay.

HDD drilling mud system

Aiming at Trenchless Directional Drilling mud purification and recycling system exists using conventional shaker run the risk of mud , grit removal and desilter not complete, mud and other small particles can not clear the problem , brightway can provide the best quality solids control equipment and system .

Using horizontal directional drilling technology for pipeline crossing construction , urban construction and municipal pipe network transformation electrification , communications and cable laying across large and small rivers, lakes, and the demolition of the building can not be the best choice is not to disfigure the state and protection of the environment the best method of construction . In recent years, the level of directional drilling technology in various countries and various sectors of the world has been widely used in China in recent years, with the rapid development of pipeline construction , especially natural gas project construction , directional drilling large diameter pipes began to , long-distance, large wall thickness across the areas of expansion , the level crossing has been greatly improved . Because of the large caliber, long-distance directional drilling developed in recent years , through the introduction of foreign rig the general majority, its ancillary equipment has not attracted much attention , especially in the mud purification and recovery system. However , as people 's awareness of environmental protection , how to conduct safety and environmental protection become directional drilling directional drilling development.


An important issue.
In trenchless directional drilling , due to the hole diameter, such as natural gas and Jining pipeline project , the use of «1 016 mm pipe, in reaming stage , a very large amount of mud . Typically , trenchless directional drilling is the open system , in general through the mud in the amount of 3 000 m3 or more, some even up to 10 000 m3 [1]. Large amount of mud , the mud will not only increase costs and land acquisition costs , more serious problem is through the completion of the waste mud Without effective treatment,

Pollution of farmland and water , will cause ecological problems. As people 's awareness of environmental protection , development and use of mud tank purification and recovery is imperative. Purification and recovery of mud slurry can be returned to solid phase processing and recycling, while reducing the amount of slurry , to reduce environmental pollution and reduce the amount of processing of waste ; the other hand, the recovered slurry are " cooked mud " , the performance is relatively stable, unstable performance can reduce the emergence of underground accidents.

Vacuum degasser

The solid control system also has some horizontal vacuum degasser equipped, its working principle is to use vacuum suction fluid, separated by the thin film after turbulent gas pumped by the vacuum pump. However, this horizontal vacuum degasser need to reprovision a pump spray unit, so that the degassed fluid pumped from the vacuum processing chamber. 

Vacuum Degasser installation

(1) Drilling site requirements as long as no obvious tilt can be.

(2) inlet and outlet pipes, vacuum pumping line connections should be sealed and reliable.

(3) before the start of inlet and outlet pipes should end while immersed in the drilling fluid.

(4) Before the start of the first inlet hose on the vacuum pump and water pipe connected, stop for 3-5 minutes, and so filled with water after the pump is started again. At the same time, turn on the gas-water separator plugs, to the gas-water separator was filled with water until the water overflows from the overflow port stop and spin on the plugs. Start should check the motor rotation direction is correct.

(5) Vacuum control valve on the adjusting screw in place has been adjusted at the factory, do not casually adjusted.

Vacuum Degasser maintenance

(1) Vacuum degasser mud tank cover should be cleaned once a week, in order to avoid clogged gas channel.

(2) After use, the rotor should be washed and vacuum tank suction pipe, cut off the power, remove as the hole blocking plate to check parts for damage, and remove foreign objects inside the tank, rinse the tank wall and the rotor.

(3) After each using, the cleaning work should be carried out to ensure the re-use deaerator with good performance.

(4) Operating ambient temperature higher than 300C, the always see vacuum gauge, when the vacuum is less than 0.3 KPa, the water temperature should be maintained within the vacuum pump does not exceed 450C.

(5) For winter using, to promptly release the gas-water separator and pump the water to prevent cracking.

(6) Every month, available to the spindle bearing grease gun filled with sodium based grease filling volume 200ml.

Liner shaker

The Liner shaker motor using two two separately driven eccentric shaft , in order to obtain a straight line shapes . Avoid the use of high-precision gear rotor forced the two excitation linking practices , so that the structure is greatly simplified.

In the ideal case ,such as the system of two identical motor characteristics , the fulcrum of the stiffness and damping are equal, nor phase exists at startup , two eccentric block synchronization reversal, can achieve linear vibration type . But in fact, because the two are not identical , and start the motor characteristics and other reasons , the two eccentric operation , it is not strictly maintain the relative position shown in Figure 2-9 , when the two eccentric centrifugal force can not be generated by Figure 2-9 superposition manner and offset to produce an unbalanced force , so that the whole screen box spring on the support movement and generate additional swing. It is due to this move and swing. Also the two eccentric automatically follow each other until they reach reverse synchronous rotation . This process is called self- synchronization process. 

The shale shaker is a important equipment in the solid control equipment.Because two asynchronous motor for rotating the normal synchronization process, a sudden stop a willfully motor power.this motor sometimes can not stop turning , it is still a long term with negative 2-axis synchronous rotation . Then sieve pinch inevitable swing , is no longer a stable linear vibration . This is because a q mJ power from the motor shaft , which can be obtained during the vibration part of the energy to overcome the friction torque shaft , but its speed - fixed somewhat reduced, which necessarily and m: between emergence phase angle A. , The question arose AF force . So, still get to follow the surface of the long-term autocorrelation synchronous rotation . If the motor after a power failure during vibration energy can not be obtained in overcoming the friction torque shaft , the motor will slow down gradually . And stops rotating . 

Brightway Design, installation location away from the mud shaker centroid distance, its main purpose is to make the sieve on the swing axis moment of inertia is small, that is to take reduced, Increasing j. Measures to improve the running stability.

Drilling Mud Desander and Desilter

Desanderand Desilter: Desander desilter are made with a hydrocyclone and a cyclone underflow handling and recycling of drilling fluids shale shaker small fine mesh composed. Drilling desander 30-90μm used to remove solid particles; desilter used to remove the 10-30μm solid particles. Carve cyclone and the cyclone particle size D50 is not only related to the size of the structure, but also with the drilling fluid density, density and pressure of the liquid inlet.Drilling desander shale shaker should be used as the second stage solid phase after removal of some equipment, and desilter should be used as the third stage solid-phase removal equipment.

In order to meet the requirements of handling all of the drilling fluid , drilling fluid and desilter desander must be made ​​up of several components cyclone cone . In order to ensure normal operation cyclone . Inlet pressure must be maintained at 0.25 --- 0.35MPa this range. Desilter swirl cone because many long pipeline , the inlet pressure should be whichever is greater ; drilling desander less due to cyclone cones , pipe sections, the inlet pressure is due , whichever is smaller . Inlet pressure depends on the size drilling sand pump matching is reasonable, therefore drilling sand pump selection is critical, usually 40mH2O drilling sand pump head around with the drilling fluid displacement and division desander mud is equal to the amount of the calibration process , you can meet the requirements. 

Meanwhile, in the selection of drilling fluids and desilter desander must take into consideration the maximum displacement of drilling pump , with its reach a reasonable match . Both devices use the time , no strict restrictions , usually in shallow stratigraphic drilling and soft formations , drilling cuttings large particles content is high, the two must be used simultaneously ; at drilling depth strata and hard strata , if with fine mesh shaker can be used directly in addition to handle drilling mud , which have little impact on the quality of drilling fluid purification , and very 
economical.

In the end,Welcome everyone to visit the professional manufacturer which is the leading company for the solids control equipment in china.

Thanks All !!

Vacuum Degasser

Brightway Vacuum Degasser is the degassing equipment to removing the little bubble in drilling fluid.

Oilfield vacuum degasser adopt the horizontal centrifugal force and negative pressure to remove the bubble, the handling ability is 290m³/h, the degassing ability can meet 95%-99%, it can remove the bubbles in drilling fluid effectively, avoid the well kick, blowout, and leakage fatality caused by the gas cut. 

Oilfield degasser has the advantage of easy for installation, operation, and maintenance, trouble-free long working time, it can be used as the mud agitator to mixing the tank drilling fluid, replace the centrifuge tank.

Oilfield Vacuum degasser produced by Brightway has the advantages of compact structure,reasonable design and so on.

Oilfield Centrifugal degasser produced by Brightway company is suitable for various supporting of drilling mud solids control system

Welcome everyone to visit our factory.
-----The  End------



Allen Lee
Name：Xian Brightway Energy Equipment Co., Ltd
Phone：+86-29-89305763
Fax：+86-29-89305769
Address：No.118 Fuyu Road, Yuhua Industrial Zone, Yanta District, Xi’an City, China
E-mail：brightway@bwsolidscontrol.com

Shale shaker

Shale shaker is the primary & initial device to be used to remove the solids in the drilling fluid, which would be used as the first stage solids control equipment in the purification system, and work as other devices, such as desander,desilter, mud cleaner, centrifuge that all are located downstream of the solids control system. Basicly the complete circulation system also includes gumbo remover, scapler shaker, and dryer shaker. All of these equipment work together with other auxiliary devices, such as mud gun,mud agitator, centrifugal pump, mud hopper, gas bruster, degasser, etc, to remove the drilled-solid that bring to the well surface by the drilling fluid.

Shale shakers drive by the vibratory motor. Motor imparts vabration force onto the screen basket ( or called screen deck), making the screen moving, so that the drilling fluid liquid phase go through the openning of screen, and drilled solids that bigger than the mesh would be moved to the discharge end of shale shaker. As the development of shale shaker, there exists three different motions of shale shaker:

Linear Motion Shale Shaker -BW

1. Circular motion shale shaker;
2. Linear motion shale shaker;
3. Balanced ellipse shale shaker;
4. Unbalanced ellipse shale shaker.

Linear motion shale shakers are widely used in oil & gas drilling after it was introduced into the petroleum drilling. As we discussed previously that linear motion shale shaker is drived by two counter rotating motor which are installed on the top of screen deck, and keep 45 degree angle with screen basket. But why it is 45 degree angle? why not 30 degree or 60 degree？

As we known that shale shaker processing capacity is effected by the combination of two factors: solid phase limit, and liquid phase limit. If these two vibratory motors is horizontally mounted on the screen deck, the vibration force at top & bottom point of horizontal level would be biggest, so the solids only jump up & down, can not move to the discharge end of shale shaker. While if the two motors is installed with 90 degree, it would be helpful for drilling fluid to flow on the screen, and solids will can not be removed. So to balance solids limit & drilling fluid liquid limit, the two motors are normally kept 45 degree with screen deck, so that the drilled solids would be tilted uphill towards to the discharge end of shale shaker.

Welcome everybody vist our factory.

Allen Lee
Name：Xian Brightway Energy Equipment Co., Ltd
Phone：+86-29-89305763
Fax：+86-29-89305769
Address：No.118 Fuyu Road, Yuhua Industrial Zone, Yanta District, Xi’an City, China
E-mail：brightway@bwsolidscontrol.com

Good attitude   Active action       Bright future

Kem-Tron Tango 500 Mud Recycling System

Kem-Tron mud recycling system is one of the popular mud system in the world . Many users choose Kem-Tron for solutions , here I will introduce one of Kem-Tron mud recycling system for you .
This unit is capable of achieving a cut point of 25 microns. The TANGO 500T has one (1) dual-deck shaker with a total screen surface area of 56 ft2 with six (6) 5” hydrocyclone desilters. The TANGO 500T carries a total tank volume of 3,100 gallons between two (2) compartments along with three (3) 250-Series centrifugal pumps with a respective horsepower rating of 25hp, 20hp, and 20hp. All the pumps are located in the pump house to protect from the elements.
Characteristics of Kem-Tron 500 mud recycling system

Firstly , this mud recycling system is a mobile unit which have wheel at one side of this unit for easy moving . Secondly , it’s a combination of recycling mud part and mixing mud part . Thirdly , This recycling unit don’t have mud agitator which don’t have a good agitate fuction . Forthly , It’s mainly focused on recycling mud not mixing which enabled this system flexible and exquisite.Lastly , the price for this recycling unit is costly .

BW Solids Control is a Chinese manufacturer for mud recycling system and have started to design for mobile system recently . For BW drilling mud system , here is some breif info for that.
Main Equipments and Layout for BW500GPM drilling mud system

1 x linear motion shale shaker BWZS70-3P
1X Mud cleaner BWZS85-1S8N, this is the conbination of desander and desilter.
2x centrifugal pump for mud cleaner
1x mud agitator
1x mud gun
1x jet mud mixer
1x Mud tank

Advantages of BW 500 GPM mud system compared with Kem-Tron

Firstly , processing by pickling, help plating, hot-dip galvanizing, inactivation and fine grind. which is guaranteed the syetem have a longer service life. secondly,mud larger mud capacity so treating effect will be better and mixing fuctions is much better too.

Thanks for your reading and supporting.

All rights By Nicholas and Allen of BW solids control.

Good attitude    Active action         Bright future

Why Galvanizing Treatment Much Better Than The Normal Painting Process?

Brightway apply the galvanizing treatment to the solids control equipment and the solids control system.

What is the difference between the galvanizing treatment and the normal painting process?

There are mainly 3 points,and let's have a look one by one.

1. The anti-rust performance of galvanizing treatment is much better than the normal painting process.

In our daily life, normally the galvanizing treatment is applied for the outdoor tubes or the underground tunnels from the consideration of the anti-rust.
The below picture is one corner of the galvanizing factory, from which you can see there are mainly for outdoor or underground use.


We apply the galvanizing treatment on our equipment and system, and in a word, it is to improve the anti-rust performance.


2.For the galvanizing treatment, there is no corner missed in this process,and both inside and outside.
In the below 2 pictures, one is to see the galvanizing treatment inside the tube, the other is to see this treatment inside the shale shaker buffer box.



3.Nice appearance of the galvanizing treatment.


Taking the example of the solids control system, let's see where the galvanizing treatment is applied?



Mud system






shale shaker



mud agitator





hopper






folding walkway



guardrail


ladder


How about the process of the galvanizing treatment?
Process : Picking-Galvanizing-Cooling-Inactive-Finepolishing



All rights By Alice and Allen of BW solids control.

Brightway Vacuum degasser

BW Vacuum degassers work by creating lower pressure inside a vessel so air or other gaseous impurities can be removed from a substance, such as water or even molten steel. The air is siphoned from the vessel after pressure is lowered enough to force the gas from the substance. A high-vacuum process environment is maintained for a variety of product testing and laboratory applications. This allows the user to analyze products or materials under a wide range of conditions and under predetermined atmospheric or environmental parameters. Some of the conditions that can be controlled by vacuum degassers include pressure and humidity, temperature, altitude simulation, electromagnetic radiation, microwave radiation, specific gravity, density and vapor pressure.


Manufacturing issues such as leakage and product integrity can be tested and corrected through the use of vacuum degassers. Other conditions, such as acoustic and gaseous emissions, can be controlled. Some testing processes include total mass loss, total mass flux and helium leak detection.





BWZCQ series vacuum degasser is a special-purpose device for the treatment of gas-cut drilling fluid. It is a new type one we have designed and developed by combining different sorts of degassers from home and abroad. It's applied to match various mud purification system. It is very important for returning mud gravity, stabilizing mud viscosity and reducing drilling cost. Also, at the same time it can be used as a heavy-power agitator during the operation of gas free mud.

Here is the detail of Vacuum degasser made by Xi'an BW Solids Control Co., Ltd


BWZCQ series vacuum degasser

1. Compressed structure and degassing efficiency of more than 95%.
2. Treatment on complete deck, grinding sand, hot dip galvanizing and inactivation.
3. Select Nanyang explosion-proof motor or domestic famous brand motor.
4. Electric control system adopts famous brand of China.

Vacuum degasser utilizes vacuum pump suction action, causes negative pressure zone in vacuum tank, under the action of atmospheric pressure, drilling mud through the suction pipe into the hollow shaft of rotor, and then through the window around hollow shaft jilt to the tank wall by spurting. Due to the effect of collision and separation wheel, separating drilling mud into thin layer, the invaded bubble broken and gas escape.