Monthly Archives: December 2016

Finished the assembly of 3 sets customized mud cleaner

DC Solid control finished the assembly of the 3 sets customized mud cleaner for domestic users at the end of 2017. The mud cleaners are used for drill water well in XinJiang zone of China.

Drill water well not need too large flow, so we choose mini DCS850-2 shale shake and 1 ea 8″ hydrocyclone to do this project. Smaller cones, typically 4″ in diameter known as desilters, remove finer silt sized solids, while the larger cones typically 10″ in diameter known as desanders removed the coarser sand sized particles.

mud-cleaner

Traditional mud cleaners use multiple 4 or 5cyclones, mounted over a vibrating screen, and are able to effectively process 400-600 GPM. The process capacity is limited by screen capacity and its ability to discard dry solids. With the introduction of linear motion vibrating screens, the capacity of the mud cleaner screen has been greatly increased. This, in turn, allows the use of additional hydrocyclones and higher, overall process capabilities.

The unique manifold design of DC Machinery minimizes the pressure drop across the hydrocyclones, thereby maximising solids removal and reducing the volume of mud discharged with the captured solids from the cone.

Cost-effective mud Cleaner from DC Solid control

With the combination of a desander and desilter mounted over a powerful multi-functional shale shaker, DC Solid control’s mud cleaners offer both high performance and versatility for the operator. This integration of advanced equipment puts forth a unit that can handle large volumes of circulating fluids and is able to retain fluid integrity.

Features such as our wedge-lock fastening system, mud bypass gate, and explosion proof enclosures all allow for ease of use. Our pride is truly expressed in our work through our craftsmanship, research, design, and the overall practicality of our equipment.

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With our in-house engineering and design capabilities,  DC Solid control can integrate any number of hydrocyclone arrangements with any of our shakers. In all cases, DC’s hydrocyclones come with polyurethane bodies, where erosion resistant inserts are available. Standard hydrocyclone cone sizes available include 4”, 5”, 10”, and 12” and can be provided in arrangements of one to 20 cones.  To ensure optimum separation capability, the pressure differential through the hydrocyclone manifold can be controlled by the installation of isolation valves on each cone.

DC Solid control can design customized cost-effective mud Cleaner for customers special needs.Our mud cleaner can meet almost all needs for oil & gas well drilling fluids treatment system and HDD Mud Recycling System.

International standard Welding procedure of shale shaker

In order to prevent the innerstress is appeared from welding don’t allow weld screen box and any auxiliary parts.
We should adopt these steps when weld shale shaker.

shale-shaker

1. Drilling 6mm hole in one end of flaw in order to prevent flaw extend.
2. Using round shovel spade groove along two sides of flaw.
3. Firstly preheat about 60℃ using 3mm diameter welding electrode to prevent any slag inclusions and bite meat condition.
4. Rubdown the protuberant electrode and weld the stiffening plate.
5. If id needs weld in screen surface bracket beam, all welding line should be parallel with beam.
6. When use alternating current weld the screen box should connect the ground to prevent current conveyance the bearing. Otherwise it is easy to led bearing damage.
7. The cutting surface will produce stress when flame cut, so the any addition holes all advised drill.
8. Installation requirements of mud shale shaker
9. When knit drilling fluid shaker screen and screen bracket is matched special vibration attenuation rubber strip. In order to make screen can reach the longest service life, the rubber strip should placed in among of screen and bracket.

We should ensure the equal interval between two sides of shale shaker screen box and screen hook when replace knit screen, we should fix the centre and compact steel flat at first, then tension the plate to keep the stress of screen surface is uniformity. It is one of the premature failure reason If the connecting is not good, the stress is not enough or uneven.

Offshore Drilling Cuttings Box Delivery To Indonesia

DC Machinery manufactured 20 pcs drilling cutting box for Indonesia offshore drilling project. And have the certificated by CCS

DC supply a complete line of Drilling Cuttings Box(Mud Cuttings Skips) for the safe containment and transfer of waste produced from offshore well drilling and completion processes.

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Also known in the industry as Cuttings Boxes or Drill Cuttings Bins, DC’s drilling cutting box have been designed, manufactured and certified in accordance with DNV 2.7-1 / EN12079 and are suitable for drill cuttings, discarded mud and drilling fluids.

Safety features such as lightweight lids for safe and easy lifting, opening and closing are incorporated as standard. Our offshore closed mud skip capacities range from 2.6m3 (16.5bbls) through to 6.4m3 (40bbls) and are available for sale or rental throughout our network of global facilities. Our offshore vacuum rated cuttings skips include capacities from 2.6m3 (16.5bbls) to 3.8m3 (24bbls).

DC Machinery supplies good quality solids control mud tank with best price, welcome to contact us and get the best solution for your work!

DC Shale shaker and mud cleaner tested before delivery

Shale shaker and mud cleaner are all important equipment of solid control system. All equipment manufactured by DC Machinery must test before delivery to ensure the good working performance.

last week, DC Machinery customized a DSC630-3 linear motion shale shaker and a JBQ4 mud agitator for Pakistan got the good test performance. Latter will be loaded on board.

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The shale shakers produced by DC Machinery have the advantages of large handling capacity, screening high precision, low-energy, environmental protection and so on. DC Machinery supplies high quality shale shakers, including Linear Motion Shale Shaker, Balanced Elliptical Motion Shale Shaker, etc.

Mud agitator, also called drilling mud agitator, used for drilling fluid agitation mix, prevent drilling fluid solid particles in the tank circulation system deposit, cycle drilling fluid performance stability, mixed evenly. DC mud agitator has high efficiency and wide usage, compact structure, big intensity stirring, easy maintenance and other significant advantages.

If you have any special request of anyother solid control equipment, please feel free to contact DC Machinery.

Operation principle of DC decanter centrifuge

The drilling mud decanter centrifuges can separate fine particles well,for separating 5~7μm particles in drilling mud,usually use medium speed decanter centrifuge,for less then 2μm,usually use high speed decanter centrifuges.

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Even the finest solids can be separated in the decanter centrifuge if its sedimentation rate in the carrier liquid is sufficiently high. The sedimentation rate depends on the particle size, the particle shape, the density difference between solid and liquid, and the viscosity of the latter. In many cases, significant improvement is possible by conditioning, for example heating or addition of flocculants. Also important is the geometrical design and establishment of operating parameters.

drum

Clarification of the liquid is effected in the case of solid bowl centrifuges primarily in the cylindrical section, dewatering of the solid matter taking place by means of filtration or compression of the solid cake in the conical section of the drum.

If you want to learn more about it, please contact us.

100pcs steel frame shaker screen manufactured for foreign clients

Steel Frame Shaker Screen is in common used presently, that are constructed mostly withe two or three stainless steel layers bonded tightly to the steel frame. Today, we shipped 100 pcs steel frame shaker screen to abroad.

shaker-screen

Features & Benefits of DC Steel Frame Shaker Screen

1. Different layers with different density:To arrange these Steel Frame Shaker Screen layers reasonably and exactly,the screening effect will become better.
2. High strength frame,multi-ribs and the mesh cloth with moderate tension,from one reliable combination:which can increase screen’s acceptable flow,the intensity and the lifetime.
3. The wedge-shaped fastening device:it can make the erection of Steel Frame Shaker Screens more handily and quickly.
4. The mesh: divided into many independent small units by grids of the backing plate, can prevent rips or tears from spreading overmuch.
5.  Accessary prepared rubber stoppers can be used repair damages. By doing so,the operator can cut down the stop-time and reduce the cost.

Addition options

Material: stainless steel wire, low carbon galvanized.
Weaving and characteristics: crimp before welding.
Uses: used in coal, mine, water profession.

DC Machinery supplies all the popular shale shaker screen on market, which are classified into 4 categories: Steel Frame Shale Shaker Screen, Pyramid Shale Shaker Screen, Hook Strip Flat Screen and Hook Strip Soft Screen.

National Iranian Oil Co, Thailand’s PTTEP Agree To Oilfield Studies

BEIRUT, Dec 6 (Reuters) – National Iranian Oil Company (NIOC) and PTT Exploration and Production Public Company Limited (PTTEP) signed a memorandum of understanding on Tuesday to carry out preliminary studies of three oil fields in Iran.

PTTEP, an oil and gas exploration and production company based in Thailand, will carry out preliminary studies over Changuleh, Balal and Dalpari oil fields in the south, Iran’s oil ministry’s news agency SHANA reported.

SHANA quoted Prapat Soponpongpipat, executive vice president of PTTEP as saying that he was hopeful it would lead to at least one contract for an oil field.

Repeat order of 22 sets mud agitator from Pakistan

DC solid control got another order of 22 sets mud agitator from our Pakistan old partner. The mud agitators mainly used for agitating drilling fluid for oilfield and located on the mud tanks.

DCJBQ Series mud agitators include an explosion-proof, “C” faced motor, reduction gearbox (helical-bevel gears for horizontal agitators or all helical gears for vertical units), impeller, and shaft with assembly bushings. Motors range from 5 to 30 HP and may be supplied in several power configurations.

mud-agitator

DC Agitator features a rugged cast iron gearbox that houses helical bevel gearing. The gear sets are precisely ground to prevent all but the slightest amount of backlash in the gear sets. This feature promotes longer life by eliminating the high impact forces generated when the unit is energized at start-up.

Please contact with DC Solid control with your tank dimension and your detail requirement. We will recommend the right model with specification about the horsepower, impeller (size, type& quality), and shaft length etc to meet your requirement.

Application Summary of Desander hydrocyclone

The hydrocyclone is an inverted conical shaped shell into which pressurised slurry is injected tangentially at the top/wide end. This induces the fluid to flow around the circumference of the shell and downwards to a small opening at its apex. Usually desander equipped 8in, 10in or 12in diameter hydrocyclone.

Normally 8in, 10in or 12in diameter. Flow rate 1 200 gpm.

The application of desanders will depend upon the type of mud in use. A desander:

1. shall be run continuously with unweighted water based muds to maintain low mud gradient, in top hole sections only
2. may be run sparingly with weighted water based mud
3. shall never be used with oil based mud.

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The purpose of Desanders is:

1. to maintain sand content of mud below 0.5%.
2. to prevent overloading of desilters.
3. A feed rate of 300 – 400 gpm shall be used.

Desanders shall be balanced to produce a spray discharge using the procedure outlined above before use. Cones shall be stripped and cleaned after every period of continuous use. For optimum performance, the desander overflow should be routed to the desilter suction tank.

Note: Since, in practice, the cut point of most 12” cones may be of the order of 200 – 220 microns for an unweighted water based mud, utilisation of screens of finer than 80 mesh may negate the need for desanders.