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Category Archives: Solids control system

Congrutualtions of DC Machinery got the sales contract of drilling waste management system

At the end of last month, customers from a well-known engineering service company in Russian visited Tangshan Dachuan Machinery Co.,ltd. is short for DC Solid control and had detailed negotiation on business cooperation with DC teams.

drilling waste

The clients were interested with our drilling waste management system. DC Profession technical service engineering team explained process flow of DC drilling waste management system, working principles of centrifuge and Hi-G dryer to customers based on the live treatment system while drilling, and showed them excellent treatment effect of Hi-G dryer and centrifuge.

waste

As part of our drilling waste management services, we also supply highly skilled staff to ensure equipments are installed correctly and that they are fully operational and well-maintained. Our employees, who trained to provide support swiftly, are on-call worldwide 24 hours a day, everyday, to be available at a moment’s notice.

Recently, DC had successfully signed a sales & purchase contract of a set of drilling waste management with the company. For the first cooperation project, the company thinks highly of excellent products quality and after-sales services of DC and expresses its intention to develop more cooperative channels with DC Solid control in the future.

Solid control sytem acceptance by Russian clients

In the early winter, DC Solid control finished the production of our standard solid control system within 30 days. Below is the picture of the users senior engineer inspection.

The order of solid control system mainly include 6 sets linear DCS700-3 shale shakers, 3 sets DCQJ250 Mud cleaners, 3 sets DCLW450-1258 decanter centrifuges, 20 sets mud agitataor and 8sets centrifugal pumps.

solid control system

DC Solid control system not only can design equipment for oil and gas field but also can provide perfect system for HDD, CBM, and other on dig drill fields.

Following the development of trenchless field, more and more site require the MiNI-mud cleaning system to remove the big solids. In order to meet it, DC Solid control has standards mud system for your choosing, such as DCGPM500, DCGPM900M, DCGPM1000 and design for according to your special request.

If you have interest with solid control system, welcome to contact us.

 

Why use solid control system in oil&gas drilling

Drilling mud is a obbligato part in petroleum drilling. It has highly polluting properties. As followings;\

Drilling muds contain a wide range of substances including base fluids (eg mineral oils/calcium chloride), weighting agents (eg barite), viscosifers (eg bentonite), surfactants (eg imidazolines) and biocides (eg glutaraldehyde).

 

Mud can aDrilling mudlso contain contaminants from formations (eg oil, condensate and H2S).

Hot mud will generate mists and vapours.

Health effects include dermatitis, respiratory irritation, narcosis and cancer.

H2S is a very toxic gas, it can irritate the eyes, and throat and can cause unconsciousness and death.

Good practice benchmark values for total oil vapour is 50 mg/m3 and oil mist is 1 mg/m3.

Individual substances should comply with their workplace exposure.

solid control system

Following the development of social economy, Each country is very strict to the environment but can’t restrict the development of economy. So appear solid control system to separate it. Solid control is a professional application to treat and recover the drilling mud.

Solid control system mainly consist of 5 levels( shale shaker, desander, desilter and decanter centrifuge). It not only can remove the harmful solid phase, but also can recycle the useful mud. That meas, protection the environment and reduce the drilling cost. Solid control system also become the obbligato part in petroleum drilling.

Effect and Benefits of Heat Treatment in Solids Control Manufacturing

heat treatment
Effect
1. Heat treatment usually won’t change the shape and chemical composition of the heat treated materials.

2. Change the internal microstructure of the heat treated material or surface chemical composition, and further change the application performance of the material.

3. Can enhance the hardness, toughness, strength, wear resistance.of the material being heat treated.

Benefits
1. Improve the processing and using properties of the steel.
2. Extend service life of the product.
3. Saving product materials and energy loss.
4.Eliminate stress, casting is not easy being deformed under strong case, maintain its performance.
5. Effectively increase the wear resistance of the steel and change metal material properties to make it plays at a maximum.

Heat treatment operation methods are generally as follows: aging, quenching, tempering, carburizing, nitriding and so on. The shaker decks of shale shakers produced by Tangshan Dachuan Machinery Co., Ltd are all have strict heat treatment, which makes the screen deck becomes stronger in hardness, better in toughness, more abrasive wear resistant to drilling fluid particles, vibration strength generated by the motor reached 7.6G, the screen deck after heat treated will be more vibration resistant.

Oil Drilling Solids Control and Separation

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Petroleum solid control system is mainly for oil drilling solids control and separation , enabling the drilling fluid recycling, also called mud purification system . Procedure applies to 2000-7000 meters of drilling wells , oil solid control system consists of 3-7 body composed of modular combinations ; purification jars conical bottom end using the new structure, the edge of the mud mixing system using easy grit ; entire circulatory system between the tank and the tank , between the warehouse and the warehouse that can be separated and can Unicom to meet the needs of drilling operations , including the bottom of the suction manifold valve is open and flexible, reliable sealing after closing . The entire circulatory system configuration 5 purification equipment, ancillary equipment in the shaker, mud cleaner Desanding addition , except for the use of air and vacuum blender , new oil drilling mud purification system , reducing emissions from the mud , with obvious environmental protection.

Solids control system for oil separation process, the drilling fluid debris , silt and other particles , to maintain circulating drilling fluid performance and storage . With increased mixing device , infusion devices and chemical filling device . For improving the physical and chemical properties of the drilling fluid to meet the needs of drilling work.

ZJ70 Drilling Rig Solids Control System for Sale

ZJ70 drilling rig solids control circulating system is designed into the configuration of five stages purification equipments, including shale shaker, vacuum degasser, desander, desilter, medium speed centrifuge, shear pump, etc, it can meet the requirements of drilling fluid circulation, mud aggravation and shearing and other accident treatment under special circumstances.

solids control system

This system is a newly designed product that based on the advantages of domestic and overseas drilling fluid circulation and purification systems and combined with the actual needs of drilling process, which uses a number of sophisticated new technologies, and at the same time taking full account of some details during the operation process, with the features of reasonable design and easy installation.

Drilling fluid purification system meets the SY / T 6276, ISO/CD14690 “oil and gas industry health, safety and environmental management system”, all AC motors and control circuits in this solids control system are comply with the requirements of explosion-proof. Technical process and devices all complies with API 13C and related standards and norms.

This system adopts integrated modulars, which is easy for assembly and disassembly, not only can satisfy the requirements of ocean and railway transportation, but also can meet the loading and unloading of crane and draging in the jobsite.

ZJ70 Drilling Rig Solids Control System

ZJ70 drilling rig solids control system produced by Dachuan solids control includes the following equipments:

1. Shale shaker 3sets;

2. Vacuum degasser 1set;

3. Desander 1set;

4. Desilter 1set;

5. Middle speed decanter centrifuge 1 set;

6. Centrifugal pump 8sets;

7. Shear pump 1set;

8. Mud agitator 20sets;

9. Mud gun 18sets;

10. Mixing hopper 4sets;

11. Screw pump 2sets;

12. Mud tank 6sets;

13. Diesel tank 1set.

If you want to get professional solution, fast response and best transportation cost, pls contact us.

Gaps between China Made and World Advanced Solids Control Equipments

Solids Control Equipments

In recent years, the theoretical research and manufacturing technology level of China made drilling fluid solid control equipments have a great development, especially the theory research has reached the international advanced level, but there are still some gaps on the performance, service life of China made solid control equipments and world advanced solids control equipments, the gaps are mainly come from raw material, manufacturing technics, machining accuracy and quality of matching general equipments(e.g. motor).

High pressure (bearing 80MPa), large capacity (30L/s) solids control equipments are still blank. Shale shaker types are very few, so drying type fine-mesh shale shakers, crawler type non vibration sieving equipments, environmental protection specially used for offshore drilling solids control equipments and multifunctional solid control systems which are suitable for various conditions need to be developed in the future.

ZJ40 solids control systems developed and manufactured by Tang Shan Dachuan Machinery Co., Ltd. is configured of five to six grades purification equipments which can accomplish 1 ~ 6 grades purification of drilling fluid according to the need of drilling operation. The total volume of the system is 240m³, maximum throughput is 360m³/h, with sufficient drilling fluid reserve function, can meet the needs of drilling deep well and high flow rate of drilling fluid system supplement; in every tank unit not only the equipments and technology are advanced, and also realizes the modularization, strong adaptability and convenient movement.

How to Select the Right Mud Recycling System Equipments

Mud Recycling System

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Here Are a Few Tips Before Making that Purchase

One major asset to a driller on location is the right mud recycling system. But, how do you know which manufacturer and size mud recycling system is the right one for you?
There is certain information that you need in order to make a well informed decision and before you cut the check on buying this big ticket item.

The factors that you should consider when sizing a mud system are:

1) Type of drill you will be using
2) The drill rate
3) The type of solids
4) The length of your bore
5) The GPM of the pump
6) The tank volume you will need
7) The number of cones
8) The screen size

These factors are important to know so that you use a recycler that is adequate enough to clean the mud and protect the components on the rig, pump and cleaner. Once you have decided on the size of the mud system you need, there is more information that you should be armed with:

Gallons per Minute: When deciding the size of a mud system that you will need, it is best to base it on 1 ½ to two times the amount you are pumping. Example: If you are pumping 250 gals, you would want to go with a 500-gpm unit.

Trailer or Skid: Depending on your requirements, mud systems can be trailer mounted or skid mounted. Trailer-mounted units require dedicated trailer (built to unit). Skid-mounted unit can be removed from trailer which releases the trailer for other duties.

Screen surface: The more screen surface area you have means more volume that you can clean.

Screen selection: The mesh size of screens is measured by the number of holes per square inch on the screen. Different mesh sizes control the size of the cuttings that you remove. The same mesh size will not work in all drilling conditions. Sizes will vary depending on the size of the cuttings and the type of formations you are cleaning.

Shakers: There are three types of shakers (orbital, elliptical and linear). Orbital is a circular motion and elliptical isn’t perfectly circular — it’s an ellipse or oval. Linear has vibration that is induced by a pair of eccentric (or eccentrically weighted) shafts turning in opposite directions. This type of arrangement allows for the development of straight line or linear motion that can also be produced in a positive (uphill) incline.
While each shaker has a specific place that it will shine like the price, the ability to process heavy clays and rock or fines and ultra-fines, our overall preference is the linear.

Cones: Depending on the size of the mud system you choose, the cone size will either be 4, 5, 10 or 12 in. Each size cone has a micron cut point, which is the size of the smallest particle that the cone can pull out. The 4- and 5-in. cones have a micron cut of 20 microns and the 10- and 12-in. have a 74 micron cut.
Hydrocyclone cones process the liquid at a rate of 50 gpm with the 4-in. cones, 80 gpm with the 5-in. and 500 gpm with the 10- or 12-in. cones.

Cones need pressure to work properly. A normal operating pressure range for 4- and 5-in. cones is 30 to 40 psi, 10- and 12-in. cones is 23 to 35 psi.

Trash Pump: Do you have a trash pump for your recycler? Trash pumps are designed to pump large amounts of water that contains hard and soft solids. Trash pumps are capable of processing materials that would clog other centrifugal pumps and can move hundreds or even thousands of gallons per minute.

Parts & Service: Mud systems have a lot of moving parts that must be maintained in order to keep them in premium working order. If you do not grease and adjust centrifugal packing on a regular basis, it will leak causing not only a mess but also a hazardous work environment.

Bearings require lubrication for long life. Cones can get plugged with debris making them inactive thus reducing your cleaning capacity. Screens get torn allowing trash to get into the system causing plugging problems.

It is inevitable that you will need replacement parts and screens for your mud systems. You want to be sure that you have a reliable source that can deliver the parts you need, when and where you need them.

Customization: What if you want to modify cleaning system? Would you rather have electric or hydraulic? Or paint it your company colors? Can you get an epoxy coating on the inside of the tank?

If your jobsite happens to be in a hazardous environment, you will want to be sure that a unit can be modified so that it is explosion proof.

For overseas jobs, you will need different electrical requirements, i.e 50 hertz as opposed to 60 hertz; can the manufacturer meet these requirements?

There are specialty applications; you should have options for a specialty piece of equipment. Be sure to check what, if any options are offered.

Environmental Awareness: In an age where our environment is a major concern, so should your choice of mud systems. You want to choose a unit that is respectful to the environment and will leave your jobsite as clean as possible.

Training: If you and/or your drilling crew have never operated a mud cleaning system you will want to be sure that you are provided with training. Knowing the maintenance requirements of your mud system will save you time and money. Usually the owner’s manual is sufficient but you may also want be assured that the manufacturer offers training videos, onsite or plant training sessions and the most important, technical support. There is nothing like knowing you have tech support when you are out in the field.

Financing Options: If you have never used a mud system or have limited experience with one, try it before you buy it. Rent a unit to see if it is the right fit for you and your company. You may also want to check if there is any type of financing available.

Warranty: Last but not least — a warranty. Be sure that you protect your investment and be sure of the manufacturer’s warranty. Don’t settle for less than a one year warranty. You need to know that a manufacturer stands behind their product.

Do your research, talk to other drillers, decide what you need and you will be able to make the best decision for you and your company.

Solid control system used in Underbalanced drilling

Underbalanced drilling is(UBD) defined as “deliberately drilling into a formation in which the formation pressure, or pore pressure, is greater than the pressure exerted by the annular fluid or gas column.

solid control system1

UBD systems require surface handling equipment similar to that used on wells that are drill overbalanced, in addition to specialized equipment, the drilling fluid must remove the cuttings from the bottom of the hole and carry them to the surface. At the surface, there must be adequate back down the drill string. In case where the fluid is not reciculated, such as air drilling and some foam drilling, provisions must be made for handing the solids and liquids.

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Solids control in UBD does not get as much attention as does solids control in overbalanced drilling. There are a number of reasons for the lack of attention. Probably the major reason is the attitude that solids control is not necessary when well-bore pressure exceeds hydrostatic pressure. This is not even close to the truth.

Resservoir damage from high solids content can occur because the annulus is not underbalanced at natural-gas drilling when the gas is recycled to the gas plant. An elaborate separator/cleaning/recompressing system is required to recycle the gas. It is usually more economical to flare the gas than to recover and clean it.

 

Correct Select of Solids Control System and Equipments

solids control system

Statistical analysis results show that the drilling fluid daily maintenance costs about 90% in solid control or to related issues .weighted drilling fluid. Barite costs about the total material cost in drilling fluid 75%. Therefore, the right choice and use of solid control system and equipment can be a lot of clear cuttings, reduce drilling fluid and related materials and treatment of consumption, so as to obtain better economic benefit.

Solid control equipment function is to control the drilling fluid solid content , the drilling fluid solid content increase will significantly reduce machinery drilling rate .Test shows that solid content every reduced 1%, rated of penetration at least can be increased by 10% ,and the smaller particle the more influence the drilling rate.

In the completion the drill with minimum volume of drilling fluid well eye needed, increase 50% safety volume to be drilling fluid solid control system in volume, a whole set solid control system is two times than in volume.

Choose good performance, reasonable structure design of the drilling fluid shale shaker, and according to the property of the drilling fluid choose the matched shale shaker number and shale shaker screen etc.

Choose performance good, matching parameters reasonable desander, desilter, using tandem process, enable good remove sand and mud effect.

Choose high speed decanting centrifuge and middle speed decanting centrifuge series, in order to approve the subsequent equipment (drilling pump, drilling rig etc) the service life, saving the mud material consumption, improve the drill speed.

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