Monthly Archives: July 2013

National Oilwell Varco-NOV

Since 1841, National Oilwell Varco (NOV) has been dedicated to ensuring customers receive the highest quality oilfield products and services.
Leveraging over 800 worldwide manufacturing, sales and service centers, National Oilwell Varco supplies customer-focused solutions that best meet the quality, productivity, and environmental requirements of the energy industry.
National Oilwell Varco is a worldwide leader in providing major mechanical components for land and offshore drilling rigs, complete land drilling and well servicing rigs, tubular inspection and internal tubular coatings, drill string equipment, extensive lifting and handling equipment, and a broad offering of downhole drilling motors, bits and tools. National Oilwell Varco also provides supply chain services through its network of distribution service centers located near major drilling and production activity worldwide.

Solids Control is one of the most important phases of the drilling process. The primary reason for using mechanical solids control equipment is to remove detrimental drilled solids from the mud system. Mechanical separation of drilled solids is achieved via screen separation and/or accelerated g-force.

Effective solids control permits viscosity and density to be kept within desired levels, which increases the life of pump parts and drill bits and promotes faster penetration rates-all of which decrease the time and expense of drilling. If mud solids are not properly controlled, the density of the mud can increase above the desired weight, which can negatively affect many areas of the drilling process.
Mechanical separation of drilled solids from the mud system enables users to realize a reduction in total mud solids, as well as a reduction in dilution requirements. The benefits of utilizing solids control equipment allow users to realize cost savings throughout the drilling process. Solids control equipment includes, but is not limited to: gumbo removal equipment, shale shakers, mud conditioners, degassers, hydrocyclones, centrifuges and dryers.
NOV® provides solids control and waste management products and services to the oil and gas industry. NOV® has been a provider of these products and services since 1974. NOV® operates a global network of sales, service, manufacturing, distribution and waste treatment facilities


Solids Control Systems and Products

Solids control equipment and services that remove solids to maintain drilling fluid integrity

M-I SWACO offers a complete line of  solids control technologies, comprising shakers, screens, centrifuges, D-SANDERS, mud cleaners and fluid processing systems.  Our integrated portfolio of cutting-edge solids control technologies are engineered to optimize drilling efficiencies by reducing fluid losses, HSE impact, and costs.

We design and operate solids control solutions that improve drilling rates and reduce costs through the efficient removal of drilled solids.  As importantly, our new generation solids control solutions minimize considerably the environmental footprint of your operation.

In developing our portfolio of solids control technologies, we went far beyond a one size fits all approach. We recognized that each project and each rig is different, and that diversity extends to the solids control. Our Rig Engineering and Systems group works closely with rig designers, contractors, operators and shipyards to assess their unique specifications.  We examine well programs to determine the optimum solids control program to meet specific cost, operational and environment requirements.

The result is an integrated drilling and waste management configuration that addresses all the unique needs of your specific project.  Regardless of the application, our best-in-class, project-specific solids control technologies have shown their capacity to deliver:

Maximum separation efficiency High-efficiency solids removal Lower costs Reduced dilution rates Optimum HSE performance


Why use a centrifuge processing drilling fluid?

When maintaining and processing drilling fluid, there are two main reasons for using the decanting centrifuge.
1 selective separation of the colloidal particles and fine particles in the weighted drilling fluid , in order to improve the flow properties of the drilling fluid
2 Clear unweighted muds of tiny particles
With the decanting centrifuge removal of these increases the viscosity and (drill cuttings and barite), and also recycled to the large size of the more valuable weighted solid phase. If you do not use the centrifuge, in order to reduce the concentration of ultrafine particles, all the fluid has to be discarded, even if the fluid contains a large number of valuable heavier solid phase.
Decanting centrifuge and mud cleaner used in conjunction to achieve the best effects?
Yes, it is right. Centrifuges and the cleaner can be cleared from the weighted drilling cuttings and recovered most of the barite. However, these two devices are different particle size range cleared. Their role can complement each other. For the heavier drilling fluid density greater than 1.80g/cm3, the best two devices use together.
The centrifuge is also often used for treatment to remove non-weighted drilling fluid cuttings particles of small particle size 2~7 um , and to separate the bottom stream of the hydrocyclone, the recovered liquid, excluding cuttings.


Mud gas separator and Vacuum degasser similarities and differences

In the drilling process, the failure to take effective measures degassing, will produce gas invasion drilling fluid, which can cause drilling bottomhole pressures continue to decrease, there will be a kick or blowout dangers.So we need solids control equipments to remove these harmful gases.There are mud gas separator, also called poor boy, and vacuum degasser this two equipments.

mud gas separatorvacuum degasser
The same point
They are gas invasion drilling mud special equipment,for all types of gas invasion drilling fluid degassing
Vacuum degasser and the liquid-gas separator of the objectives are the same: separated the drilling fluid invasion of various gases.
Separation range is not the same: the mud gas separatorcan remove gas bubbles 3 ~ 25mm in diameter, in addition to vacuum degasser separating gas is 0 ~ 3mm diameter bubbles.
Liquid-gas separator is mainly achieved by the action of gravity collision, while vacuum degasser using vacuum degassing, turbulent flow, centrifugal and other principles.
Mud gas separator processing capacity is much larger than vacuum degasser.

China Solid control equipment best manufacturer

Tangshan DC Solids Control has whole series of solids control equipments. Equipments used in oil and gas drilling, CBM( coal bed methane), HDD( Horizontal directional drillng) and DSS( dredging slurry separation) and driling waste manaement.
Shale shaker is the first stage solids control equipments. DC Solids Control also has Dual motion shale shaker used in drilling waste management for drying drilling waste. Dual motion shaker is used for water base drillin waste.


At the second stage of solids control system there is desander. And third stage desilter. DC solids control has soly desander or desilter with different numbers of cones to meet different treating capacity. DC Solids Control also has mud cleaner with both desander cones and desilter cones with shale shaker beneath. For DC Solids control desander cones uses 10 inch and 4 inch cones for desilter.
The fourth stage of solids control uses centrifuge. Centrifuge can separate more fine solids. DC’s decanter centrifuge can separate 2-7 micron solids. Centrifuge is also used in drilling waste management.

Other equipments DC Solids Control manufactures are mud gas separator, vacuum degasser, centrifugal pumps, submersible slurry pump, screw pump, shear pump, mud agitator and mud gun, flare ignition device etc.
DC Solids Control’s whole series solids control equipments exported to Europe, Russia,Middle East,Africa with good quality and performance.DC focus on top quallity solid control equipment. Please contact for more information.

Tangshan DC solid control pumps

Tangshan DC solids control equipment is a professional well drilling solid control equipments manufacturer. DC provide whole solid control equipment and various pumps feeding for shale shaker, decanting centrifuge etc equipments. The following lists various pumps DC produce.

An oilfield solids control system needs many centrifugal pumps to sit on or in mud tanks. The types of centrifugal pumps used are sand pumps, submersible slurry pumps, shear pumps, and charging pumps. They are defined for their different functions, but their working principle is the same.

Centrifugal pump

centrifugal pump

DC SB Series Centrifugal pumpis used for transferring drilling mud. It can be used as feeding pump for desander, desilter, or used as mixing pump for Jet Mud Mixer. Also it can be used as trip pump,and supercharging pump for rig mud pump. All DC model centrifugal pumps use tungsten carbide mechanical seal, with famous brand Bearing. And spare parts interchangeable with most of the international Brand pump which helps customer to source spare parts easily. Open impeller design that lowers axial thrust loads, and make it easier for installation, repair and maintenance.

Submersible slurry pump

submersible slurry pumpp

DC YZ SeriesSubmersible slurry pumpis with structure of vertical single stage and single suction system overhung centrifugal pump, it is made of abrasion-resistant alloy, it can transfer medium with high concentration particle. The normal submersible length is 1.3m/1.5m,customized length is available. There is no bearing and Gland Seal between impeller and pump body, so the slurry pump is maintenance-free and high temperature resistance, the slurry pump is the ideal centrifugal pump for feeding to decanter centrifuge, and feeding from mud pit for to the shale shakers on the mud system, it can also be used as feeding pump for desander and desilter.

Shear pump

shear pump

The DC shear pumpreduces the cost of mixing polymers and clays while improving mud properties. Shearing the polymers eliminates fish eyes and prevents polymer chaining (long strings), which cannot pass through the shaker screens. The DC shear pump is available as a belt-driven or diesel-driven package including a hopper, mud gun, and transfer line orifice plate. A complete system with skid, tanks, and piping are also available.



Yantai Jereh Oilfield Services Group Co.,Ltd.

Group profile


Yantai Jereh Oilfield Services Group was incorporated in 1999 and now is a public company listed in Shenzhen stock exchange. Jereh is a worldwide leader in providing integrated solutions of oilfield equipment and services for oil and gas drilling, well intervention, well completion, natural gas transportation, natural gas liquefaction, environmental control and EPC services.


Headquartered in Yantai, China, Jereh currently consists of 18 subsidiaries with 3200 employees working globally. Jereh has built  two industrial parks in Yantai covering an area of over 100 acres and six service centers located near the major oilfields in China. Jereh has also established the R&D center and manufacturing center in Houson, USA. Wordwide sales and service centers have been well established in Canada, South Amerrica, UAE, Kazakhstan, Russia, Australia, Africa, Indonesia and Hong Kong to provide customer-focused solutions to the energy industry.

Products & Service

Developed to becoming a worldwide leading equipment and services provider , we have achieved rapid development especially in technology R&D, manufacturing capacity and global market expansion. Jereh’s leading-edge oilfield equipment including Dill rig, cementers, Fracs, Coiled tubing unit, Nitrogen pumper, Intelligent pipe handling system, Snubbing unit, Hot oiler, Coiled tubing injector and BOP, natural gas compression unit, Natural gas liquefaction unit, Wellhead equipment, Downhole motor and related equipment, We also provide the oilfield services including drilling, well completion, production, well intervention, waste management and EPC services.


TSC offshore Group Limited

TSC Offshore is a global product and service provider, serving both onshore and offshore drilling industries worldwide. TSC’s comprehensive product lines include drilling equipment, mechanical handling equipment, solids control equipment, power control and drives, tensioning and compensation systems for semi-submersible rigs and drillships. TSC also provides jacking systems and rack materials for jack-up rigs. TSC designs, builds and sells complete rig packages for jack-up rigs, semisubmersible rigs and platform modular rigs. TSC rig supply chain solution division provides complete MRO (Maintenance, Repair and Operation) supplies for all rig operations. TSC also designs and builds offshore deck cranes for both drilling rigs and production platforms.

How to choose the right mud cleaner?

1.What is a mud cleaner ?

The DCQJ250x2 / 100×12 mud cleaner has an efficient solids-fluids processing design, which consists of a linear shale shaker, desander with two 10” cones and a desilter with twelve 4” cones primarily used to eliminate 20 – 74 microns of sand and mud in the underflow.

2.How to choose the right  mud cleaner?

You can choose the right one from DCQJ series

Enquiry us for consultant.


The factors that you should consider when sizing a mud equ

1) . The capacity of the system or capacity of the pump(m³/h or GPM);

2) .Type of drilling rig you will be using;

3) . The length of your bore ;

4) .The type of solids(mud),i mean WBM or OBM;

5) . The tank volume,size,how to place you will need;

6) . The electric system 380V,50Hz or 460V,60Hz;

7) . Do you need trip tank,mud gas separater etc;

8) . Do you have transportion limit to the cargo or track;

9) .Do you want to recycling barite.

These points should be consider by buyers.

DC deislter & Derrick desilter

desilterThe Derrick round and inline desilters are designed to remove silt-sized (12-74 microns) solids from drilling fluids. Derrick round desilters are simple to operate and easy to maintain. Shutoff valves on each cone inlet permit individual cone removal and inspection without interrupting operation of the desilter. The Derrick inline desilter is designed for use in areas that cannot accommodate the spatial requirements for the premium round desilter configuration. Both the round and inline desilters are available in 10-, 12-, 16- and 20-cone models, which results in a maximum capacity of 1600 GPM at 75 feet of head. The inline desilter is also available in a stand-alone model.

Derrick’s polyurethane hydrocyclone offers a high volume 4” cone, while providing contractors an economical replacement for less efficient older equipment. Derrick hydrocyclones are manufactured using a specially formulated EU polyurethane which has excellent resistance to heat and abrasion. Derrick’s unique uni-body construction eliminates excess parts and seams where excessive wear can occur. Derrick’s 4” desilter cones are available with ceramic inserts for extreme service.

Desilter produced by DC Machinery can be adjusted to control the handling capacity to match the different requirements. It is widely used in petroleum drilling and HDD (Horizontal directional drilling).

1. Combined by the 4″ or 5″ hydrocyclones and pipes, the operation and adjustment are much easier. 2. The material of hydrocyclone is polyurethane, long service life, light weight and easy to maintain. 3. The bottom flow hole of hydrocyclone discharges the sand particles as an umbrella and the “wet bottom” discharging can make the particles be discharged quickly, and reduce the probability of bottom flow hole block. 4. The symmetrical inlet structure makes the hydrocyclone allocation more reasonable and the work more stable. 5. The inlet and outlet of hydrocyclone are equipped with ball valves, can adjust the number of working hydrocyclones at any time. 6. Shale shaker with the advanced small shaker screen has the advantages of large treating capacity, low noise and long service life of screen. 7. According to the clients’ requirements of the handling capacity, the desilter can be made up by several groups of hydrocyclone.