Category Archives: Drilling Mud Cleaning System

According to two months communication, DC solid control manufacturer successfully signed three sets Zj4000 solid control system. After Bulgaria and Ji lin two big solid control, we signed the order.

DC solid control

This is the Russian customers, we meet in BeiJing CiPPE exhibition. In the exhibition, they visit our exhibition stand and we have a pleased communication, we exchange the business cards, and they promised our solid control equipment is the best than other suppliers (including material, material and welding).

solid control system

After back from Beijing exhibition the customer from Russian sent me an inquiry about Zj4000 solid control system, according to two months exchange, we have already reach a consensus and decided signed three set ZJ4000 solid control system.

DC solid control redeveloped the eastern Europe marketing, and re proven our strength. Now we are manufacturing the system. The customer said will resent us an inquiry of vehicle-mounted ZJ5000 system. I believe we will establish long terms relation business.

Mud Cleaner is the second class and the third class solids control equipment which is the newest type to treat the drilling fluid.

At the same time Mud cleaner has the higher cleaning function compared with separated desander and desilter. In addition to the reasonable design process, it equals another shale shaker DC mud cleaner structure is compact, it occupys small space and the function is powerful. Mud cleaner is the ideal device of the second class and the third class solid control to treat the drilling mud.

Mud cleaner

DCQJ200×2/100×8 Mud cleaner is made of a desander and desilter, the desander is made of two 8’’ hydrocyclones. The desilter is made of eight 4’’ hydrocyclones. The inlet liquid diameter is 150mm and the discharge fluid diameter is 200mm. and the matching pump is 37-45kw.

The mud cleaners are given a three-part coatings to maximize equipment life.  Spare parts and consumables have been designed to ensure the lowest replacement cost & long-term product durability. The numbers of hydrocyclone device decided the productivity, and rotary flow quantity.

DC is a professional manufacturer of solid control system/equipment in china. We will provide our client high quality products with most reasonable price, at the same time we also sincerely offer the high level after sales service for any home or abroad clients. We still adhere to the concept of creating the maximum values and the satisfaction for our clients.

Function of vacuum degasser 

Vacuum degasser used in filling well, grinding well and sinkiang Di na well. All technology indexes all achieve the design requirements. Degassing effect is marked and will produce the good economic benefit. In the regular drilling process, if occur drilling fluid gas cutting, the vacuum degasser can dispose it. It can avoid the influence of gas cutting to drilling fluid working performance, decrease the abrading of mud pump, improve the efficiency of water and decrease the repairing times and stop drilling dispose times.

Comprehensiveness of vacuum degasser 

In unbalanced drilling, now have the degassing equipment – drilling fluid gas separator, it only separate the free gas in drilling fluid, but it can’t eliminate the not free gas. Drilling fluid often have gas cutting. The function of vacuum degasser is eliminating the not free gas. The equipment developed succeed provide the guarantee for the matched equipment of regular drilling and unbalanced drilling.

Why vacuum degasser can eliminate the gas 

In order to efficiency eliminate the gas in drilling fluid must meet the requirements:

The bubbles in drilling fluids should expose on the surface, will rapidly swell and fracture in the negative pressure condition. Gas cutting drilling fluid will remain a certain times in separation chamber. After gas cutting enter into separation chamber will present the turbulent condition flowing. So the degassing effect decided by the reasonable control of vacuum, the remaining times of gas cutting drilling fluid in degassing chamber and the turbulent condition in degassing chamber.

Degassing chamber vacuum is higher, the bubbles received the expansionary force in drilling fluid is bigger, the volume expansion is bigger, drilling fluid give the buoyancy is bigger, then bubbles are easy float to the drilling fluid surface to broken.

The selectivity solid phase control technology 

Application selectivity solid phase control technology, the returned drilling fluid from well mouth through high efficiency screened divided into big grain wet drilling cuttings and sieving fluid, which separated the three class solid phase through classification filter separator, from thick to fine successively is thick drilling cuttings(74~35 µm)aggravate solid phase(35~15 µm)and fine drilling cuttings (2~15 µm), after the aggravate solid phase separated by separator return into drilling fluid system, the coarse and fine drilling cuttings excretion. It can eliminate more harmful solid phase, especially the diameter particles lower than aggravate solid phase harmful solid particles, can improve drilling machine speed, decrease drilling fluid viscosity and dilution water and decrease drilling fluid volume.

Drilling cuttings in –line treatment technology: 

We only value drilling fluid treatment past, but lose sight of the treat to drilling cuttings, drilling cuttings directly discharge into mud pit. Every well all need a mud pit, the area should exceed 500m2. According to treat the wed drilling cutting in-line, can divided into filtrate and dry drilling cuttings, filter returned to drilling fluid system, the dry drilling cuttings are placed in storage and transportation box, centralized processing and recycling used, according to drilling cuttings in-line treatment technology can make drilling cuttings and waste drilling fluid can’t drop on the ground in drilling field, can fully recover available drilling fluid and don’t use mud pit, it has the obvious e economic benefic and huge social benefit.

Drilling fluid recycle technology 

Usually the waste drilling fluid is 100-300m3 after a well drilled successfully. According to the homologous stratum characteristics and drilling fluid type to separate the waste, to the available drilling fluid proceed fully recycle use, can decrease drilling fluid gross, decrease emission load, the benefit is very obvious. Of course, the drilling fluid recycle need a set of processing measure, main including the improvement of drilling fluid performance, classification storage and reliable application.


Applicability and structure

Drilling fluid mud jet mixer, an commonly used equipment in mixing fluid, is an important part of drilling fluid solid control system. When well blowout occurs, it can be used to mix large amount of weighted materials even in drilling fluid within little time.

Working mechanism

The drilling flow into the jet pump with certain pressure, in the jet pump fluid spouts out from jet nozzle first, then flows into shear pipe through mixing chamber, Material will be added from hopper to mixing hopper, and move into shear pipe with the flow. During this process, they are dispersed and mixed. The mixture will enter into drilling fluid tank when flows out of the shear pipe.

The shear pipe is hollow and it can expand gradually based on certain curved surface. It is mainly used to enlarge shearing force inside the pipe to disperse the material further and increase the mixture pressure head, this will make it easy to enter in to circulation tank.

Installation and commissioning

Connect the inlet opening of drilling fluid mixing jet mud mixer with the outlet pipe of sand pump, and the hopper outlet leads to drilling mud tank.

6’’ flanges should be used at inlet and outlet.

The hopper should not be equipped too high, sine the more high, the less of mixing capacity.

The centrifugal pump used here should match with the mixing jet mixer.


The necessary maintenance can improve the working reliability of the jet mud mixer, and prolong its service life.

A Daily maintenance

The work is cleaning the feeding hopper and mixing chamber, keeping the equipment neat.

B Periodic maintenance

Checking the fasteners

Checking the fasteners once a month, be sure they are tightening.

Unit anticorrosion

Painting the paint breakage timely.

Flare ignition device is the treating device of oil drilling, refinery and natural gas gathering and transportation station, using flare ignition device ignite the harmful gas to eliminate the harmful to environment and safety harm, it is a kind of security environmental equipment.

Except for use in refinery and transportation gas, it is widely used in oil drilling process. The device is mainly made of DN200 (DN150) gas burner, GDH-2 electronic igniter, ignite appliance (liquid gas tank, tube), drilling fluid gas separator and other ect.

Working routine 

The working process of the device is:

The combustible gas transported to the burner inlet by pipeline which installed on the safe place.

Connect and start the current exchange and voltage magnification electronic circuit of electrical flare ignition device.

Open the liquid gas storage tank, operate electrical igniter light the draw fire pipe, or directly open the draw fire air valve which can discharge air, use electronic igniter light the flash tube.

Open the gas evacuation brake value, the burning ignite pipe light the evacuation gas.

Closed the liquid gas storage tank, extinguish draw fire tube, keep the combustible evacuation air fired.

The superiority of ignition device 

Electrical flare ignition device make manual work fire up to automatic operation, refraction the humanistic philosophy and environmental protection. So it is necessary to use electronic ignition device, in drilling and formation testing process, open flow is the usual. In past 10 years, open fire up is all manual operation.

The person who approached to open flow point, it is easy to burned, have the big risk; meanwhile, manual operation duration time is long, the accuracy rate is not high, the poisonous gas will discharged to the air and lead to pollute environment. The ignition device produced by DC solid control overcomes the shortcomings. It can fire the poisonous flammable gas at times, remove the pollution and harmful.

Checking routine every day

Checking the connection condition of vacuum pipe

Check gas outlet pipe and the connection.

Checking mud outlet pipe whether unimpeded, discharged pipe outlet must be submerged below mud surface.

Check oil pool liquid level.

Check gas discharge value.

Starting degassing 

Check all electrical equipment connection.

Starting degasser

Degasser must gradually enter into normal working condition. check mud discharge pipeline.

Stop degasser

Stop the vacuum degasser

Open the washing value, washing separation impeller 5 minutes.

Check and maintenance of ever week 

A Speed changing box

Check speed changing oil pool every day, on occasion add Dexron III transmission fluid.

B Top washing device.

We must washing vacuum degasser every week, washing out the mud which dry and hard the vacuum chamber. Make the sufficient number of seawater wash the impeller of upper gas cell.

C Other maintenance

Gear case oil, work with 1000 hours should replace lubrication and cleaning or replace filter assembly. The model of lubrication is Dexron III fluid frivr , oil volume is 2 gallon and the liquid level is 25/64 on galss porthole.

Day time maintenance

Check the inner surface of wear- resisting rubber cone bush.

Check inlet pressure whether meet the demand, ensure small hole is cleaning and give it fair adjustment.

Lubricate the packing of desander pump and desiltr pump.

Three months maintenance

Add the butter to coupling.

Two years maintenance or using 15000 hours maintenance

Check pump impeller, pump case and sail upstream, discharge water valve, when need should replace impeller, pump case or value

Check the bearing and sealing element, when needed should replace.

Check hydrocyclone cone bush and each component, when needed should be replaced.


Different customers have different requirements. In recent days, the 3000 drilling fluid system have already delivered to Jiang Su oil field.

The Jiang Su oil fields is an old customer of ours, they purchase one centrifuge, two sets shale shaker and a vacuum degasser from our manufacturer last two years. Now they place an order of 3000 system including one shale shaker, desilter, desander, centrifugal pump, jet mud mixer.

Because the order is urgent, so the manufacturing period is short, in order to ensure the quality and don’t delay use, our workers all overwork. Now the equipment finished.

On succeeding visits, the customer is very satisfied with our equipment and service, he said our solid control equipment has the advantages of long service life, large capacity treating capacity. The most important is our service is very perfect, our engineers and technology can get to the oil field guide the using and installation guide. He promised, he will establish long terms business relationship.

Our company is a factory focuses on the production, sales and after-sales maintenance service of mud cleaning equipment of petroleum drilling (not excavation). The main products are mud cleaning screen, vacuum degasser, desander, desilter, mud cleaner, mud gas seperator, mud agitator, desander pump, shear pump,centrifugal, flare lgnition device, mix funnel, jet mud mixer, mud tank, water tank, diesel tank, etc.

Welcome foreign customers consult.

Hydrocyclone is a taper container with cylinder parts, the upper part cylinder part of taper is into mud chamber; outside set a tangential mud inlet; the taper down part is opened whose diameter can adjust, used to solid phase particles discharged. The closed upright cylinder top part center have a overflow pipe of insert down and extend to below of inlet mud tangent line location. The structure made of cylinder, conical barrel, inlet pipe, overflow pipe, precipitate pipe and ect

Cylinder: its inner diameter shows the intended size of the hydrocyclone.

Conical barrel: it has the separation affect, the taper angle usually is 15º- 20º.

Inlet pipelineDrilling fluid enter into hydrocyclone from it. In order to improve the state motion of hydrocyclone, improve separation efficiency. The depth should stretch to the cone location.

Overflow pipeline: The processed drilling fluid return to drilling fluid circulation system from overflow, in order to prevent drilling fluid overflow in cylinder, the depth should stretch to the cone location.

Precipitate pipe line: The eliminated solid phase particles and little fluid discharged from precipitate pipe line. In order to improve the bottom flow of hydrocyclone and improve separation efficiency, the bottom flow mouth diameter of precipitate pipe can be adjusted.

Usually the shell of hydrocyclone manufactured with cast iron. In order to improve the wear resisting property, the inner all use wear resisting rubber. In order to further improve its service life, some whole shell adopt polyurethane material, not only wear resistance but also corrosion resisting. To big size hydrocyclone, the shell use aluminium alloy, inner lining polyurethane, it can pledge shell have enough strength and decrease the weight.

Design hydrocyclone must base the minimum liquid loss provide the maximal solid phase eliminating efficiency. And it accords to well field physical truth, installation the appropriate number hydrocyclones to increase the treating capacity to meet the requirements of all drilling fluid performance in the whole drilling system.

Petroleum drilling machine:It is the professional machine in oil gas drilling, it is made of several sets equipment. Mainly include power unit, power transmission unit, hoisting equipment, rotating equipment, circulate equipment, instrument and solid control system.

Hoisting system:

Function: rise down drilling machine, case and control drilling.

Constitute: winch; travelling system, hook and derrick.

Rotating system:

Function: rotary system

Constitute: turntable and water faucet.

 Circulating system

Function: circulating drilling fluid can continuation and efficiency drilling can eliminate the crush drilling cutting and carry it to the ground at times, cooling drill bit, stabilize well wall and control stratum pressure.

Constitute: drilling pump, high pressure manifold (ground manifold, high pressure vertical pipe), drilling fluid treatment system (mud tank, solid control equipment, mud allocate equipment)

 Power system

Function: providing power for winch, turntable and drilling pump.

Constitute: diesel engine or diesel engine generator and electromotor.

 Driving system

Function: power of diesel engine or diesel engine is assigned to each working set by driving system.

Constitute: mechanical driving- reducer, liquid driving, parallel operation and shifting.

 Control system:

Function: commanding each system coordination work.

Constitute: electric, gas, liquid control pipe, pipeline, all kinds of control value, clutch.


Function: installation all kinds of working unit.

Constitute: drilling floor foundation, loading winch, turntable, derrick, generator room foundation, loading engine, driving unit:

 Well control system

Function: control blowout

Constitute: blowout preventer stacks-single disc, double disc, annular preventer, stone, liquid pressure control panel, control pipeline.