Monthly Archives: March 2019

CSQ250 desander hydrocyclone used for drilling fluid

The CSQ250 hydrocyclone desander is a cost-effective equipment upgrade designed to efficiently remove sand-size (40-100 micron) particles from drilling fluids. Operating at 75 ft lbs of pressure, the unit processes approximately 500 gallons of fluid per minute, per cone.

Desander and desilter hydrociclones are device to separate particles from drilling fluid, which is sorted by shale shaker in the first phase of solids control system.

Hydrocyclone-Desander

CSQ250 Desander Molded from rugged 95 Shore A durometer polyurethane for dependable, long-lasting performance, the unit offers exceptional resistance to heat and abrasion. There are no problematic moving parts to jam or wear. The bottom cone and discharge assembly are easily removed for cleaning or replacement. A special
ceramic insert is available for extreme-duty applications. Installation on standard manifolds is fast and easy using the simple grooved 2” connections at the inlet and discharge flanges.

Easy installation and maintenance, long-wearing durability and dependable performance make the CSQ250 hydrocyclone desander the ideal equipment upgrade for demanding drilling projects.

It’s the right choice for you to choose DC Solid control

The nature of solid content mechanism in drilling fluids directly affects its properties and causes adverse impact on drilling performance. It has rapidly evolved and become a paramount issue over the years because of challenging drilling operations.

mud system

To control the impact of the drilled solids on drilling fluid properties, solid control system unit must be capable of removing the drilled solids before the re- circulation. Failure to establish good solid control management may end the operation strategy with dilution method. A rigorous analysis of drilled solid effects and its correlation with poor performance of solid control system significantly reflects on the overall rig performance in optimizing drilling operation.

Commonly the Solids control system includes five-phase purification equipments as shale shaker, vacuum degasser, desander, desilter and centrifuge for the purification and circulation of the drilling fluid. This mud system is designed to guarantee the smooth performance of separation, circulation, injection and confection of the drilling fluid and to fit the space available and weight requirements of oilfields.

DC solid control system complies with ISO/CD14690 “Health, Safety, environmental protection and environmental management system of Petroleum industry”. The process and equipment comply with API 13C

Replacement of Mongoose PRO shale shaker design of DC Solid control

The M-I SWACO MONGOOSE PRO shale shaker combines balanced and progressive elliptical motion, enabling operators to switch motion “on the fly” as drilling conditions change. With a simple flip of a switch, the MONGOOSE PRO shale shaker shifts from the balanced elliptical to the progressive elliptical motion without the need to
suspend or shut down operations.

shale shaekrs

To meet the advanced technology of the shale shaker. DC Solid control absord the abroad advanced design and combine our unique technology to design a new shale shaker, we call it DCPT shale shaker which shale shaker also combines balanced and progressive elliptical motion realized by 2 motors.

Operators can change the type of motion required to either handle high volume or produce dryer cuttings, as drilling conditions dictate. With the DCPT shale shaker, NPT lost to changing out shakers to meet drilling conditions is no longer an issue.

shale shaker

The balanced elliptical motion manages high-volume solids. Effective for tophole sections with heavy, high-volume solids, the balanced elliptical motion provides 7.5 gn of force to quickly move high volumes of solids across the screens.

Progressive elliptical motion produces dryer cuttings. The gentler action of the progressive elliptical motion is effective when the cuttings volume is reduced, such as in lower sections, and operators want a longer drying time for the cuttings. The g-force is reduced to 6.5 gn to optimize drilling fluid recovery and produce dryer cuttings.

Replacement shaker screens of China top supplier

China DC Manufacturer designs and manufactures all series shale shaker which is an optimal material for petroleum drilling machinery of oil field project.

We mainly supply five different shale shaker screens, including hook strip screen, frame shale shaker screen, hook types for shale shaker and frame flat shale shaker screen. DC Manufacturer also manufactures shaker screen panels for all series shale shaker. Our shale shaker products are widely used in oil field, sand control, coal mine, filter liquid and gas.

screens

There are many different types of shale shaker screens available on the market today, each with different types of weaving to create the screen and different sizes of mesh. Ultimately choosing the best screen comes down to choosing the finest mesh you possibly can that doesn’t result in drilling liquid being lost from the front of
the shaker screen that match the type of shaker equipment you are using.

shaker screen

If you are looking for replacement shaker screens for your drilling equipment, you may want to consider DC Separation products. All of the shale shaker screens that we offer are high quality but extremely affordable. With a wide range of mesh designs and customizable screen options available, we can provide the perfect screen
for your equipment at a price.

What should we know about the Decanter centrifuge

A decanter centrifuge separates solids from liquid phase(s) with high efficiency. In the centrifuge the gravitational acceleration is replaced by the much higher centrifugal acceleration (up to 4000 x g). By this high bowl speed the solids (higher density) are separated from liquids (lower density).

Decanter means that the liquid and the solid phase are separated from each other by centrifugal acceleration. The solids particles collect due to their higher density on the bowl wall and are transported with the scroll to the discharge openings. At the same time the cleared liquid flows along the scroll into the liquid discharge zone.

decanter centrifuge

The four main sections of a decanter centrifuges:

1) Inlet zone
The inlet zone accelerates the feed slurry up to the speed of the bowl. A properly engineered inlet zone keeps any degradation of the feed solids to a minimum as well as avoiding disturbance of the sediment in the bowl. A number of feed zone specifications are available for decanter centrifuges, each designed to ensure maximum performance in conjunction with a specific process.

2) Screw conveyor
RotatingSolutions-34
The key to good decanter performance lies in the efficient, effective scrolling of the sedimented solids. The design of the screw conveyor is therefore crucial. You must have the expertise needed to match the demands involved in specific industrial processes with specific configurations of flight pitch, lead angle and differential speed, in order to secure the best possible results.

3) Solids Discharge Section
Depending on the application, the consistency of the separated solids can vary from a dry powder to a paste. The configuration of the discharge zone is therefore chosen to enable such “cakes” to exit as effectively as possible. Innovative designs enables erosion-prone components used in the solids discharge zone to be replaced on site at low cost and with a minimum of disturbance to production.

4) Liquid Discharge Section
In a two-phase decanter, the liquid level is regulated by dam plates. In a three-phase centrifuge when operating in a three-phase mode, each phase discharges over a set of dam plates into separate baffled compartments in the casing. In certain applications, a centripetal pump discharge that utilizes the pressure head developed by the rotating liquid phase is used to pump the liquid from the decanter.

Typical applications of 2-phase separation are waste water clearing, sludge dewatering, but also juice and wine production with decanter centrifuges.

Vertical cutting dryers function and High performance

Vertical cutting dryers are a high-speed vertical centrifuge that achieves maximum liquid/solid separation in large volumes. Vertical cutting dryers are one of the industry’s best performing and most dependable cutting dryers.

Function of vertical cutting dryer:

A vertical cuttings dryer can reduce liquid content to 5% with less maintenance costs. Vertical cutting dryers offer a waste management solution to effectively clean and dispose of drilling solids and maximize drilling fluid returns specific to operational needs.

Its high capacity processing provides substantial reduction to the oil-on-cuttings ratio to help meet regulations for waste disposal. Maximum separation of solids and liquids can be achieved. Increased separation means increased fluid recovery, lower cost of replacement fluid and minimal waste to be transported and disposed of going straight to your bottom line.

vertical cutting dryer

Versatility and high performance:

Drill cuttings are conveyed from the shakers to the VERTI-G cuttings dryer through a variety of site-engineered conveyance systems, including gravity feed, pneumatic transfer via CLEANCUT cuttings collection and transportation system, vacuum transfer and screw conveyors.

Vertical cutting dryers provides its operators an advantage for environmental and economic reasons. Vertical cuttings dryers are a necessity for industries where increased regulations on cuttings discharge are prevalent.

Mini Mud recycling system for Bored Pile

DC Mini solid removal system is the economic way for the mud recycling, it is popular for Bored Pile Slurry desanding plant, TBM slurry treatment, HDD (trenchless) as well as water well drilling etc.

Mud system

Usually bored pile is used for those tall buildings or massive industrial complexes, which require foundations that can bear the load of thousands of tons, most probably in unstable or difficult soil conditions. In order to ensure Bored Pile can works properly. DC Machienry design many sets mud removal system for different conditions:

DC Mini solid remove system Models:
DCS-200D Capacity: 200GPM,50m3/h
DCS-500D Capacity: 500GPM,120m3/h
DCS-1000D Capacity: 1000GPM,240m3/h
Other models should be customized.

DC Machinery also customized different industries mud circulation system based on your requirement. We have professional equipment used in the system, such as shale shaker, desander, desilter, mud centrifuges, mud tank, agitators and ect. Please contact us if you want to get more infos.