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Most of the horizontal directional drilling mud system is not equipped with decanter centrifuge unit as by using the 3-phase separation system including shale shaker, de-sander and de-silter unit, it can work good enough for removing the solids from drilling fluids. Centrifuge is relative high cost, which is also a reason the drilling contractor doesn’t equip it in the mud system.

However, for some high request drilling condition, the driller may use the heavy mud for better drilling performance. Sometimes the drillers add the certain chemicals to make the drilling mud heavier so that the mud can better protect the wall of the drilling hole. If the driller went to drill another well, the heavy chemicals need to be separated, and then the centrifuge could be used to do this job. In some other conditions, after many times recycling of the drilling mud, there is much ultra fine solid particles that cannot be removed by the shaker and cyclone unit, and then the centrifuge unit is needed.
GN Solids Control has nearly 10 years in fabricating the drilling mud system for HDD projects. This type mud system need to be compact structure and easy for transportation. See the picture in this article, both the de-sander and de-silter unit are equipped with under flow shaker for drying the discharged solids. The shakers used are 2-layer screen design. The bottom layer screen is used as primary shaker and upper layer screen to dry the discharges out from the cyclone units. This design greatly reduces the footprint of the mud system. And all tank top surface equipment are pre-installed on a frame with same base dimension as storage tank. When transport the mud system, the shaker and decanter centrifuge units could be removed by lifting the frame for fast disassemble. With the frame, the equipment could be easily transported by flat bed trailer.
GN can provide both standard and customized HDD mud system for clients. Just send us your request, and then you will get a satisfying and cost effective solution.

Derrick, NOV and Swaco are well known to all people who work with solids control equipment. These are the 3 big guns in this industry. It could be seen from that, almost every corner of the world, their equipment are running. During this oil business depression, most of the drillers, mud service companies and even oil field service companies who have mud engineering business abandoned these 3 brands and convert to find some other brands with cost effective price but same good quality.
There are several solids control equipment manufacturer in China. Customers from abroad have no enough information to tell who qualified manufacturer is. GN Solids Control devoted himself in this industry for nearly 10 years, would like to share below information on GN to tell everyone who want to make a deal with solids control manufacturer in China.

1. What certificates you have to be a solids control manufacturer
GN Company was founded in the year of 2007. And 1 year later, GN got the certificates from API. From that time, GN became the first API certified solids control equipment manufacturer in China. So far, GN is also the number one solids control manufacturer who has passed most times of the examination by API in China. GN also got the certificates of ISO, HSE, CE certificates issued by DNV and Russia Customs Certificates.
2. What is your facility looks like
GN’s facility is up to around 400,000 square meters including 2 factories near Beijing downtown and airport, which is very convenient for customers’, visiting for business negotiation and delivery inspection. In the year of 2013, GN set up the facility (sale office and warehouse) in Houston, USA. Till now, GN has finished the inventory in Houston warehouse for several of GN main equipment like shale shaker, decanter centrifuge and cuttings dryer. For the wear parts of shaker screen, GN also has stock in Houston. In the year of 2014, GN did establish the sales office in Moscow, Russia.
3. What did you do and what are you doing
Only the company who is continuously researching and improving can live longer and get bigger. From the beginning of the foundation of the company, GN made the normal solids control equipment and system. Till now, GN can provide drilling waste cuttings management system to finally make the hazardous waste environmental friendly. GN is not only an equipment manufacturer, but also a turnkey solution provider. In the year of 2015, GN got the approval of National New High-tech Enterprise, which is the best prove of GN’s willing to be the number one of solids control manufacturer in China.
4. Who choose GN Solids Control
Today, GN’s equipments are running in over 60 countries and regions. Many world famous enterprises have ordered from GN. Baker Hughes, Halliburton, Shell and COSL respectively ordered waste cuttings management equipment from GN solids control. Moreover, good remarks were sent back to GN on the performance of equipment. Some of the customers even repeated order from us. If you don’t know much on GN’s equipment, or you want confirm what we done ever before. Welcome to GN, we have many real cases for potential customers to refer. Facts speak louder than words.
4 reasons would make you convinced on why GN is the top class manufacturer of solids control equipment. For other solids control brands in China, you can ask them same questions and see what answers you can get.

In drilling mud solids control system, pumps are used to transfer the drilling fluids from one machine to another. Submersible slurry pump is one type pump installed vertically on mud tank or mud pit. In GN designed solids control system, this type slurry pump is often used in HDD project and feeding to centrifuge wherever it is used.

Submersible pump used in HDD mud system

GN has standard model of HDD mud system ranging from 200GPM to 1500GPM. All the models are compact structure. The used drilling fluid in this horizontal drilling comes out from the drilling hole and accumulates in a mud pit. It requests a pump to transfer the drilling mud to the mud system. Above picture perfectly shows the how the submersible slurry pump is installed vertically on the mud pit to transfer the drilling mud to the shale shaker in the HDD mud system. As this pump is installed out of the mud system, when making the quote to clients, GN always recommends an independent submersible slurry pump as an option.

Submersible pump used as centrifuge feeding pump

In an oil and gas drilling mud system, after treated by the de-silter cyclone, the drilling mud will be pumped to decanter centrifuge for fine solids separation. Vertically installed in mud tank will ensure a larger tank compartment capacity for more drilling mud storage.
GN’s submersible slurry pump is single stage single suction type pump that is usually used to transfer the slurry with larger solids content. There is no bearing and gland seal between impeller and pump body; hence the slurry pump is maintenance-free and high temperature resistance. Submersible slurry pump is an ideal equipment to transfer the mud to centrifuge and HDD shale shaker. Besides, it can also be used to feed the de-sander and de-silter.

Every year, GN Solids Control will manufacture and export large quantity mud tanks used in drilling fluids solids control system. As a specialized manufacturer of solids control equipment, the rectangular shape mud tank is one of GN main production. Besides this type mud tank, GN is also able to design and manufacture the oilfield fuel tank.

Oilfield fuel tank is used to store the fuel like diesel to be used in engine that supplies the electric power for the oilfield. GN just finished the fabrication of one unit fuel tank and right now this unit is put in our assembling yard for delivery. From below picture, it could be seen that this fuel tank is very striking red color telling people this tank is used to store flammable material.

How this Fuel Tank Works

1. GN’s fuel tank is designed horizontal cylinder type to be mounted on an oilfield three runner skid for drilling site easy moving. There are 2 tanks, one fixed horizontally on skid is the main tank for fuel storage, and the other smaller one could be lifted vertically when using to be used as a temporary storage tank from where the fuel will flow to the engine. If need to be transferred to another site, the smaller tank could be put down horizontally for easy and save transportation.
2. These 2 tanks are connected with hose pipe for fuel transferring. The transfer power source is the pumps mounted on the skid. 2 pumps one is in use while the other one standby. The bigger tank has a capacity of 8 cubic meters, it could be transferred a quarter of capacity to the smaller tank. It means the capacity of the smaller tank is 2 cubic meters. After raised up, the fuel in the smaller tank could flow to the engine freely under the gravity.
GN’s fuel tank is designed to be able to put in a 20 ft container for easy sea transportation. For more information on this fuel tank or other solids control equipment, please feel free to contact with us.

De-sander is very popular equipment used in solids and liquid separation processing. It always contains cyclone unit and steel frame. With different diameter of the cone body, this cyclone unit could separate the solid particles with different sizes. GN’s de-sander is using 10 inch cyclones which could remove the solids size down to around 45 microns.
GN’s de-sander unit is used in drilling industry to separate the drilling cuttings from the drilling fluids. Traditional de-sander units don’t have the under drying shaker for maximum recovery of the drilling fluids liquid, thus a large amount of valuable drilling fluids was lost. However, this type de-sander and even the de- silter unit are very simple structure and cost effective.

To make the discharged solids much dryer, GN prefer to suggest choosing the de-sander unit with a under drying shaker which could recycle much more drilling fluids. This could reduce the waste discharges to environment and the cost on drilling fluids materials. GN has a de-sander model with under drying shaker of 2 layers screens panel. This unit is functioning as both primary shale shaker and de-sander unit. The drilling fluids gets into this de-sander unit via the mud distributor pipe and then flow on the bottom layer screen firstly for primary solids control. Liquid gets through the screen mesh and falls down to the under located mud tank. Large size particles will be discharged out of the shaker. And then the liquid will be transferred by a centrifugal pump unit to the de-sander cyclone unit for fine solids separation. The mixture of liquid and solids discharged from the cyclone will come to the upper layers screen for drying processing. Here, to prevent the damage of screen mesh resulted by the strong impact force of solids discharged out from the cyclone unit, GN designs small buffer box to cover the outlet of the cyclone. This buffer box is small enough to make the unit more compact.
GN’s double-layer screen panel shale shaker can also be used as only primary shaker for much fine solids separation. Besides de-sander unit, de-silter unit can also use this type shaker as drying shaker.

All persons who ever been a drilling site will know that the solids control equipment like shale shakers are located on top of the mud tank. The shakers are fixed directly by bolts onto the mud tank top, if you want disassemble the system, you need loose the bolt and take off all the shakers units one by one which will cost much time.
GN Solids Control ever made several mud systems in which the primary solids control equipment are pre-installed on a framework, and then the framework whole package is put on the mud tank top. Just like below picture shows 2 unit GN’s double layers shale shakers in installed in a 20 ft container size framework, under the shaker base and on the frame skid, there are opening through where the drilling fluids could flow down to the mud tank.

What benefit this design would brought to the operator
1. Preinstalled shakers on the frame greatly save the time for assembling and disassembling, not bolt will be lost during the procedure of many times installation.
2. Container sized frame with container fixing point at all 8 corners of the bottom skid and top beam. This frame could be put directly on the flat bed trailer for easy transportation.
3. The horizontal and vertical beams and legs could be used as support of rain cloth to cover outside the frame for bed weather.
Actually, not only shale shakers could be pre-installed in this type framework, the decanter centrifuge unit can also be put in it. On the frame, there will be enough space for wire cables laying.

Framework is simple but it could bring convenience to operators. Besides this type frame, GN could also provide telescopic skid frame used to put decanter centrifuge and vertical cuttings dryer on that for waste cuttings management application. That type frame is little complex, however, it could make the equipment a modular package to meet customers’ requirements better.

Chinese traditional New Year will start from the February 8th 2016. It is known that China New Year is named with twelve kinds of animals, or we can also call it Chinese Zodiac. This year the animal is Monkey. All twelve Chinese Zodiac represents twelve kinds of human characters, while the Monkey emblems to be flexible thinking and dealing with affairs.

Spring Festival is the most important festival to all Chinese people, just like the Christmas in West and Hari raya for Islam. Chinese Spring Festival means reunion, so all persons working outside will go back home to see their parents, even the grandparents. All the brothers and sisters will stay together to enjoy the happiness and share their achievement in past year. Spring Festival means Reunion, Spring Festival means going home. Spring Festival means a new beginning.
GN’s employee comes from all corners of the country. Some or our guys will spend over 30 hours on the train home. In order to give everyone sufficient time to get together with their families, GN’s holiday started from February 3rd. February 15th is the first day for work in New Year. So, if you have any request, please make calls to our sales guys’ cell phone number. If you are GN’s old customer, you may have the cell phone number of right person. If you are a new customer, please call to our USA office at 713-878-0880.
In regards to the Monkey, China has a very classic TV series called Journey to the West telling a story of master and disciple total 4 persons who overcome thousands of difficulties finally arrive at the Ancient India to get Buddhist scriptures back to Tang Dynasty. During this story, the eldest disciple is a monkey who ever created a tremendous uproar in the heavenly palace and later converted to Buddhism to assist his master to get the scriptures. It is a very famous God evil spirit novel in China. Any interest on China history and Chinese myth, you can search and peruse it.
GN would like to share the happiness with all of friends coming from every corner of the world. I would like to used a very popular saying in Spring Festival as the end of this article – 恭喜发财!（May you be happy and prosperous!）

Last week, GN’s manufacturing department finished the fabrication of a mud mixing tank with double hoppers. Mud mixing tank is widely used in the drilling mud recycling system for mixing and re-configuration the drilling fluids. Also sometimes it will be used for storage the active drilling fluids.

A mud mixing system is always consisting of mixing tank, agitators, mud guns, mixing pump and mud hoppers. Generally, the mixing pump and the mud hopper will be located at one end of the mud tank to make the mixing tank system a compact and single unit, while in some projects, the mixing pump and hopper are installed on a separate skid so that the mixing tank and the jet mud mixer could be used much freely. The picture in this article shows that the jet mud mixer skid was located at one side of the mixing tank. There are one mixing pump and 2 mud
hoppers on the skid. The mixing pump is connected with both hoppers, one of the hoppers is used for mixing barite to make weighted drilling fluids, and the other one is used for adding bentonite into the drilling fluids.
There is a steel frame around second hopper with steel bars over the hopper. This horizontal steel bar is used to hang the bentonite bag which will be hooked at 4 corners of the steel frame to make it easier for adding the bentonite powder into the hopper. It is worthy to mention that the steel bar is with forklift lifting slot so that the bar with bentonite bags could be lift and put on the frame by a forklift to save human power.
This mud mixing system is with a control panel to control mixing pump which could transfer mud to both hoppers. On the mixing tank, there is another charge pump which is used to transfer the active mud back to the rig for reuse.

Shaker screen users may know that there are flat type screen and pyramid type screen used very often on the shale shakers to separate the cuttings from the used drilling fluids.
The flat type shaker screen are very common in screen application, with 3 layers wire mesh stacked and closely connected with the steel back frame. Always there are hook strip type and steel tube frame type screen. Different from the flat type screen with a flat shape screen panel, the pyramid type screen is designed three dimensions screen panel like a wave. This pyramid screen design firstly issued by the world No. 1 solids control equipment manufacturer of Derrick Equipment. And they do have patent for this design.

Comparing with flat type screen, the pyramid type screen has below several advantages.
1. Make a larger effective screen area. Due to the wave type with top and troughs, in fact, the screen panel has a larger screen area than the flat type if the screen panels have same width and length. The pyramid screen let more drilling fluids distribute on the screen and more fluids will with solids less than the mesh will go through the screen.
2. Under the G force and gravity, the solids will accumulate at the troughs of the screen. Comparing with the flat type screen with solids distribute uniformly on the whole screen panel which will impede the go though the screen, the pyramid screen has the wave top and slopes at both sides will let drilling fluids come through.
3. The pyramid screen will make the fluids distribute as a much thinner layers which also helps to increase the flow rate and make the solids much dryer. And it can also separate solids around 3 meshes finer than the flat type screens.
These advantages pyramid screen will especially appear more clear when fed with larger volume drilling fluids that can submerge the screen panel. Thus the full screen effective area will be fully used.

Shaker Screen is one of the very often uses wear parts for drilling process. When starting the drilling process, the shaker screen is installed on the shale shaker unit to separate the solid particles in drilling fluids. The fine holes on screen panel could block the solids larger than the hole size, while the liquid could go through easily. On oil field, most of the shale shaker unit is using 3 or 4 panel screens. According to different condition of the drilling fluids and usage, the driller need make some inventory of the spare shaker screen.

It will be good to get the shaker screen from the original shale shaker supplier so long as you are willing to spend much money on it. There is another way to get the replacement screen from the OEC screen manufacturer. This would save a lot on the cost of spare screens, so that the drilling cost would be greatly reduced.
GN Solids Control, definitely, is one of the manufacturers of the shaker screens. With nearly 10 years experience in manufacturing the solids control equipment and shaker screens, GN now could provide the replacement shaker screen for Derrick FLC 500 and 48-30 series, replacement screen for Swaco Mongoose and ALC series. No matter hook strip or frame type, pre-tensioned or non-pretensioned. Many positive onsite level performance feedbacks proved the GN’s screen quality.
It is well known GN is a manufacturer who is keeping improving the technology. After several years’ research and kindly feedbacks from customer, GN has improved the technology on shaker screen fabrication, which greatly increases the shaker screen life time and reduce the processing cost. This directly leads to the reduction of the screen price. GN is willing to share the benefit with all the clients by quoted the full line screens with a 20-30% unit price reduction. That is really good news for the shaker screen requester.
GN is also able to provide the replacement shaker screen used on Cobra shaker, VSM300 shaker and FSI shakers. Besides, GN’s does have the screens for own shale shaker unit. If you have any request on the shaker screen, just call us to get more information.