Tag Archives: drilling fluid

The five stages of solids control equipments 2

Second stage solids control equipment: vacuum degasser

Vacuum degasser separate H2S and other gases. It is helpful for reducing cone part abrasion on desander and desilter during further handling.It also can beused as mud agitator with big power.

Third stage solids control equipment:Desander

Desander is used for separating 45-74μm particle from drilling mud. It is adopted with flexible and replaceable cones for option ( 1pc to 3pc,dia 10″ or 12″).Good wear resistance for cone material with PU and high-chromium iron for option.Smaller size motor and lower position deck,making sure lighter participating vibration weight,getting bigger treatment capacity.

Fourth stage solids control equipment: Desilter
Brightway desilter is used as 4th stage equipment for drilling fluid solids control system.It separates 15-44μm particle.Clamp and replaceable cone design,the desilter coupled with flexible cone number for option(8pc,10pc,12pc,16pc,20pc,dia 4″ or 5″).Smaller size motor and lower position deck,making sure lighter participating vibration weight,getting bigger treatment capacity.

 

Fifth stage solids control equipment: Decanter Centrifuge

Brightway solids control series Decanter Dentrifuge is used for separating tiny particle(dia above 2μm).The decanter centrifuge is versatile for different drilling mud with various proportion and viscosity.Brightway solids control is the most advanced decanter centrifuge supplier in China,and has won high recognition and praise from domestic and abroad with science core technique and a lot of innovative patents.

Jet Mud Mixer

Jet mud mixer is a mature equipment of Brightway Solids Control. It’s wedely used in mixing mud. Brightway has a complete line of mud mixing equipment designed to assist operators with the greatest available efficiency in blending. Bentonite, polymers and other powder additives have traditionally been added to assist in achieving the properties needed from drilling mud such as viscosity for hole cleaning, water loss control and filter cake build up.

Jet mud mixer

On weighted mud applications, the ability to handle Barite during potential blow-out applications is even more important. Brightway Jet mud mixer consist of mechanical seal mixing pump and venturi hoppers, If it is used with shear pump together, the effect will be more excellent, it can be designed as double jet mud mixer according to customers’requirements.

shear pump

And installation for the mixing pump and hoppers are flexible from Brightway, either on a single skid or at tank end skid or even separately with hopper on mud tank top, and pump at tank side.

 

All flexible design is to make the complete solids control system to be compact and user friendly.The Tandem Jet mud mixer provides backup in mud mixing. When one mixer fails the other can be used to avoid project stops.And it highly boosts the mud mixing efficiency. Please contact us for more infomation.

Angle adjustment system of shale shaker

The angle adjustment system of shale shaker can raise or lower the screen basket end during the work. This part includes two vertical column assemblies that are connected on the upper column assembly and are attached to the shaker base.

shale shaker

The movable part of AWD consists of the lower column,limit device that controls vertical movement and hydro jack that drives the upward & downward movement of the shaker screen basket. The fixed ends of jack are connected in upper column assemblies and the movable piston bar is fixed in the lower column assembly. Reciprocately pulling the operating grip of the hand pump or starting the oil return valve of the hand pump can make the screen basket move upward and downward respectively. The screen basket can be adjusted within -1°~+5°. Fix and lock the elevator with clamp pin at the suitable angle, which can reduce the attack on the hydraulic pump when the basket is running at this angle.

 

Feeder:

The mud treated by other equipment or mud that returns from well will flow into the shale shaker through the mud tank which has a buffer effect on the drilling fluid and can make the mud flow onto the screen equably .This can reduce the mud attack to the screen and increase screen work life and mud treatment efficiency. Meanwhile there is a square cover on the tank top and from here we can test the mud performance.

shale shaker

Vibration Motor

It boasts of the features of stronger vibrating strength, higher reliability and easier maintenance. The exciting force is generated by eccentric rotor and the exciting force of single motor can reach 38kN. Suitable ambient temperature is : -40℃~150℃.

 

The Economy of Linear Motion:

Brightway linear motion shale shaker is especially effective while drilling top-hole sections where heavy and high-volume solids are usually encountered. In these intervals, shakers need generate high G-forces to effectively move dense solids across the screens, cuttings above 75μm can be brought from well.

Poor boy degasser

We manufacture mud gas separator in oilfield drilling mud cireculation system .Mud gas separator is also called Poor boy degasser, Gas-Liquid separator. It captures and separate large volume of free gas within the drilling fluid. If there is a “KICK” situation , this vessel separates the mud and the gas by allowing it to flow over baffle plates.The gas then is forced to flow through a line and vent it to a flare. A “KICK” situation happens when the annular hydrostatic pressure in a drilling well temporarily (and usually relatively suddenly) becomes less than the formation, or pore, pressure in a permeable section downhole, and before control of the situation is lost.It is always safe to design the mud/gas separator that will handle the maximum possible gas flow that can occur.

Mud gas separator

Brightway series Mud gas separator is professional equipment to treat the gas invade mud. When the drilling mud result gas invade, the proportion of its weight and viscosity have a greater deviation not to meet the requirements of drilling.

 

 

The serious situation is that would cause Chung well, and even blowout accident occurred, if not to treat it timely.?Brightway mud gas Separator combined with the Flare Ignition Device can be used to ensure the drilling process smooth.It is devided into the normal pressure mud gas separator and pressure auto-control gas-liquid separator, according to the pressure.Mud Gas Separator is your best choice to prevent drilling fluids invasion.

 

 

The principle behind the mud gas separator is relatively simple. The mud and gas mixture is fed at the inlet allowing it to impinge on a series of baffles designed to separate gas and mud.The free gas then is moved into the flare line to reduce the threat of toxic and hazardous gases and the mud then discharges to the shale shaker and to the mud tank.Gas-liquid separators in other countries also called Poor boy,Liquid-gas separators,Mud/Gas Separators, etc.

Drilling Mud Tank System

Drilling mud tank system is the fluids process system completely with mud equipments and all tanks configuration. Following is some information on our high quality.

 

 

For drilling mud tanks system we can use it in various drilling. The different well drilling conditions will request different fluids system.Drilling fluid system including mud tanks system, the mud process equipments. All pipelines and electrical lines, cables, and all accessory parts. Such as the ladders, hand rail, guard rail, etc.Fluids system equipment mainly is shale shaker, hydrocyclones, decanter centrifuge, centrifugal pumps, mud mixer and mud agitator.

shale shaker

 

What is the mud tanks detail then? Actually, we need almost fluid system include shaker tank, active, storage tank or mixing tank. Sometimes, there will be also the trip tank, pill tank, and swab or test tank.The mud tanks are different size or dimension. It depends on whole mud tanks system capacity or flow mud pump flow rate. Whole mud system including different phases and process steps. We need to calculate all information in detail.

 

 

Brightway can manufacture any type of drilling fluids system on customer requirement.Welcome every client to visit our factory.

What kind of Shale shaker is the best?

Shale shaker is components of drilling equipment used in many industries, such as coal cleaning, mining, oil and gas drilling.They are considered to be the first phase of a solids control system on a drilling rig, they are used to remove large solids also called cuttings from the drilling fluid, more commonly called “Mud” due to its similar appearance.

 

 

Drilling fluids are integral to the drilling process and, among other functions, serve to lubricate and cool the drill bit as well as convey the drilled cuttings away from the bore hole. These fluids are a mixture of various chemicals in a water or oil based solution and can be very expensive to make. For both environmental reasons and to reduce the cost of drilling operations, drilling fluid losses are minimized by stripping them away from the drilled cuttings before the cuttings are disposed of. This is done using a multitude of specialized machines and mud tank.

 

 

Shale shakers are the primary solids separation tool on a rig. After returning to the surface of the well the used drilling fluid flows directly to the shale shakers where it begins to be processed. Once processed by the shale shakers the drilling fluid is deposited into the mud tanks where other solid control equipment begin to remove the finer solids from it. The solids removed by the shale shaker are discharged out of the discharge port into a separate holding tank where they await further treatment or disposal.

 

 

Shale shakers are considered by most of the drilling industry to be the most important device in the solid control system as the performance of the successive equipment directly relates to the cleanliness of the treated drilling fluid.

Mud Mixer Hopper

Mud mixer  hopper is offered by Brightway as a complete assembly, easily installed in the user’s 5-inch piping system.The assembly includes steel feed funnel sack table ,jet nozzle, venturi,butterfly valve, and mounting base. Individual components are also availble.

mud mixer hopper

This effcient, high performance hopper was developed by Brightway to improve the shearing and dispersion of solids in all types of mud mixing appliances. The hopper incorporates unique engineering features resulting from BW’s years of experience with oil drilling operations throughout the world.

 

 

Mud mixer hopper features
High feed rates for all types of solids
Exclusive jet nozzle/venturi design
Improved downstream efficiency
Suitable for long return lines or high mud tank
Effcient shearing to prevent balls or slugs
Rapid, uniform dispersion
Flexible operation for weighted or underweighted mixing applications
1100-1400 GPM Fluid Capacity
Operates 40-60 PSI

mud tank

Brightway also manufacture other solids control equipment.Welcome any customer to visit our factory.

Mud Tank for Solids Control System Part 2

Ⅲ· The Role of Mud Tank in Solid Control System

As mentioned that one mud agitator is equiped on the top of each compartment, and the mud would be stirred by the agitator impeller which is welded with four 45-degree blads at the bottom end of the impeller. Driving by the agitator, the impeller can stirring the mud sufficiently.  The diameter of the impeller includes many sizes. While the length of the impeller shaft depends on the depth of the mud tank.

mud tank

On the top of mud tank, there also exists a floating mark, the bottom of which is floated on the surface of the mud in the mud tank. By reading the mark, drilling workers can easily know the depth of the mud down in the tank, and no need to enter into the tank. While for the purpose of mud tank cleaning, and inner pipeline maintaining, there also exists a ladder in each compartment, and also a cover on the top to avoid any falling accident.

shale shaker

Ⅳ· How the Mud Tank Works.

 

The mud tank bears the whole circulation process of the drilling fluids between the wellhead and mud pump. First it comes directly to the shale shaker. The solids are to be separated by the shaker screen and discharged out of the mud tank through the sand-releasing slot, while the drilling fluid with small particles would enter down to the compartment below the shaker for further separation. If air infusion into the mud, a sand pump would suck up the mud from previous compartment  and pump it into the vacuum degasser to discharge the air in the mud and return the drilling mud into the second compartment. If non air infusion, the vacuum degasser would work as mud agitator.

vacuum degasser

Brightway welcome every customer to visit our factory.Any questions,please feel free to contact with us.

How to keep a drilling shale shaker work efficiently ? Part 2

3. If fluid flows through a hole or tear, cuttings are not removed. Any screen with a hole or tear should be replaced immediately. With a shaker screen, the hole or tear can be plugged.
4. Shaker screen replacements should be made as quickly as possible. Minimize downtime by planning your work. Locate and arrange tools and screens before starting. If possible, get help. This will decrease the amount of cuttings being kept in the mud because the shaker is not running. If possible, change screens during a connection. In critical situations, drilling may be interrupted and the pumps stopped while the screen is replaced.

shale shaker
5. Dilution fluids ( water or oil ) should not be added in the possum belly or on the shaker screen.
6. Dilution fluids should be added downstream. Dilution-fluids ( even water ) additions should be metered or otherwise measured.
7. Except for cases of lost circulation ( when it is necessary to retain lost circulation material ), the shaker should not be bypassed, not even for a short time.

decanter centrifuge
Brightway is a professional oilfield drilling mud shale shaker supplier and manufacturer in China oil drilling mud solids control industry.As the pioneer in this industry,Brightway is capable of providing customers with series products ,such as oil & gas drilling fluid solids control equipment, decanter centrifuge, drilling waste management equipment and drilling system equipment.

How to keep a drilling shale shaker work efficiently ? Part 1

The oilfield drilling mud shale shaker is the first stage of oil drilling fluids solids control equipment in drilling fluids mud purification system .The oil drilling fluids shale shaker can remove cuttings above 76μm brought from the drilling well to leave the liquid with smaller particles into the drilling fluid circulation mud tanks below, which will flow into next grade drilling fluids solids control equipment to be treated.

shale shaker
The Economy of Drilling Mud Linear Motion Shale Shaker
Brightway drilling fluid linear motion shale shaker is especially effective while drilling top-hole sections where heavy and high-volume solids are usually encountered. In these intervals, drilling shale shakers may generate powerful G-forces and its effective vibrating motion can quickly remove the dense solids from screens and particles from wells.

shaker screen

 

How to keep oilfield shale shaker work efficiently ?
1. The excess pressure significantly decreases the drilling rate and removes cuttings from beneath the drill bit. Eight general rules to assure shale shakers will work properly and remove drilling cuttings.
2. The shale shaker should be run continuously while circulating. Drilling Cuttings cannot be separated if the shaker bed is not in motion.
Drilling fluid should cover most of the shaker screen. If only one quarter or 1/3 of the shaker screen is covered, the screen is too coarse and should be replaced with a finer screen.