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.

Brightway Desilter

Domestic drilling mud in drilling waste management instrumentality performance level compared with foreign countries, there's still a spot, it's necessary for foreign solid management instrumentality gift state of affairs investigation and learn the technical advantage, promote our country's solids management instrumentality analysis and development of producing technology. This paper collected reception and abroad within the solid section analysis instrumentality mud desilter style, analysis, calculation and use, material and also the basis of analysis achievements, with the present within the mud desilter to some existing issues within the style a replacement form of mud desilter device theme. Connecting with the assembly apply, this paper primarily on the subsequent many aspects of the planning work: 

(1) Through the domestic and foreign mud desilter connected assortment of knowledge analysis, found the domestic and foreign desilter characteristics and development direction, combined with domestic desilter technology state of affairs and lubricator solid section management the particular state of affairs planned preliminary style.

(2) in keeping with the mud desilter of the operating mechanism and conditions of use, advises the desilter the structure and also the main structure style.

(3) Through the intensive field investigation and technical demonstration, with China's a part of the oil field, first, from the facts, supported technical practicableness, structure of advanced BWCNQ100-8N sort desilter style theme and technical parameters.

(4) mistreatment computer-assisted technology style strategies, the prevailing solid management instrumentality supported the analysis results, and do the BWCNQ100-8N desilter theme style and theoretical calculation.

(5) within the structure style and mechanics analysis and intensity, and on the idea of the vortex end of the most components of the structure style, draw the particular assembly drawings and also the necessary drawing.

Brigthway can provide you the professional solids control equipment and drilling fluids system.

Workover rig mud system

Workover Rig is known as the Workover the different types of rigs include the offshore and onshore Rig that range from 150 HP to 1000 HP. Workover rigs have a surface depth that is equipped with diesel engines and transmissions and is available from 8000 ft to 30000 ft. Workover rigs contain a full line of drilling packages. There are skid mounted drilling rigs and the ones that are trailer mounted. Workover skid mounted drilling rigs incorporate the diesel electric AC/VFD or the DC/SCR drive rigs, mechanical drive rigs and the combination drive Rig that ranges from 1000 horse power to 6000 horse power; while the trailer mounted Rig ranges from 450 horse power to 1000 horse power.

Work over drilling rig mud system is also one kind of solids control system .The workover rig mud system is usually contaiind shale shaker, mud cleaner, decanter centrifuge, and mud tank. BW Solids Control is professional at this kind of mud system. BW Exported 5 Sets XJ550HP workover rig mud system to Indonesia, 4 Sets Workover rig mud system to Mexico. 2 Set to Thailand. BW Solids Control can supply all the equipments customized. Whatever your requirements. BW is able to design and manufacture the mud system as per your detailed requirement.

Benefits of BW Workover rig mud system

(1)Customized Design Equipment: Only for customers, we produced which you need!!!

(2)Simplicity and Useful: Simplicity is the essence of BW Solids Control Co.,Ltd.

(3)User Friendly: Very easy and safe to use all the solids control equipments.

(4)Environment Friendly: Be friendly to the environment is very important in drilling operation.

----The End--

Allen Lee

Brightway solids control Ltd
www.bwwell.com
www.bwsolidscontrol.com
bwsolidscontrol.en.alibaba.com
Skype:roylxh888


Good Attitude, Active Action, Bright future.

Desilter Cleaner

BW-CNQ mud desilter is the third phase solids control equipment to treat the drilling fluids, and improve the performance of drilling mud, can combined with desander cleaner. The most common cone is ”4 or 5” , mainly separate size of 15-47μm solids particles out from drilling fluids. According to clients’ treating capacity can choose the number of cones.


BW Desilter Cleaner
Features & Benefits of BW Desilter Cleaner

1. Adopt ANSNy limited elment analysis, optimize structure.
2. Heat treatment on complete deck, grinding sand, pickling phosphating and hot dip galvanizing.
3. Painting: Heavy anti-corrosion paint adopt national famous Dewei Brand.
4. Vibration motor is form Italy OLI.
5. Electrinic control system if from Huarong brand or Helong brand explosion-proof eletronic switch.
6. High strength compound rubber material used to reduce shocking
7. Cones adopt high wearing-resisting polyurethane and High copy Derrick structure
8. Inlet and outlet adopt fast joint connection.

Parameter of Desilter Cleaner

Allen Lee
Name：Xian Brightway Energy Equipment Co., Ltd
Phone：+86-29-89300061 +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

All rights By Nicholas and Allen of BW solids control.

MI -Swaco centrifuge VS BW centrifuge

Centrifuge is a widely used equipment in the O&G drilling mud system. It always adopts decanter principle to separate suspension liquid. In the tank system, centrifuge is located as the fourth stage handling equipments to treat the drilling mud out from the mud cleaner.

MI-Swaco is one of the world famous solids control specialist either in products quality or in service. Known to all the persons in solids control field, MI-Swaco equipments also have a higher price. Many clients inquiried us for the equivalent equipments of MI-Swaco, Derrick and NOV or some other famous brand. 

Take the MI-Swaco centrifuge model of 518 HV as an example. A customer inquire us for whether we can offer a equivalent for equipment. After comparing the main parameter, we propose our model of BW LWF450-1250N to customer for reference, below is the main parameters compare:

So far, BW dancanting centrifuge is more and more popular in word market, just shortly before we exported 6 sets centrifuge to Nigeria and Brazil for 1000HP to 2000HP drilling rig. For more information on BW centrifuge and other solids control equipments, just feel free to contact with us.

     Allen Lee  / Sales Manager

Name：Xian Brightway Energy Equipment Co., Ltd

Phone：+86-29-89300061 +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

BW Decanter Centrifuge Working Principle and Function

Decanter centrifuge is the important phase cleaning equipment in a complete solids control system to separate fine solids. It is the most high technology products among all solids control equipments.

Centrifuge Working Principle

A centrifuge works on the principle of accelerated settling. By imparting addition “G” forces to the content of a centrifuge, solids (in a solids laden fluid) will settle much quicker. To understand how a decanting centrifuge works after desilter , first look at a simple sedimentation vessel.
Solids in this fluid will settle to the bottom of the vessel over a period of time. One way to speed the process of settling is to reduce the height of the vessel so the solids do not have as far to drop. If a specific volume is required, the vessels dimensions can be lengthened or widened . Depending on the rheological properties of the fluid and the size and density of the solids, settling time can still prove quite slow. 
Centrifuge Functions
A decanting centrifuge consists of a conical, horizontal steel bowl that rotates at high speed using a double screw type conveyor. The conveyor rotates in the same direction as the outer bowl but at a slightly slower speed. 
Functions including:
1) De-water hydrocyclone underflow;
2) Remove drilled solids from the active mud system
3) Control rheological properties by removing colloidal particles in weighted drilling fluids.

A decanting centrifuge is so named because it decants or removes free liquid from separated solids. It consists of a conveying screw inside a rotating bowl By exerting increased G-force on the drilling fluid, the particles are accelerated and settle on the outside of the bowl The free liquid pool is removed and the solids are pushed away and discharged from the bowl. 
Please contact BW Solids for inquiry freely.