Drilling Waste Management

Recently, a client ask GN questions about the operation of the big size GN Sludge and solids vacuum transfer pump GNSP40B. The client want to know what is the flow rate of the air supply to GN Sludge and solids vacuum pump? No indication of airflow, clients are just looking at the outlet pressure on the main compressor display to increase the air supply flow rate above 20M3/min will make the pump more powerful.

Below is the communications between GN Solids Control and the client.
The client has been testing the vacuum pump to remove soft sand , and noticed the following situation:
1) Suction pressure is reduced when the status turns into loading (On Auto mode )
2) Continues airflow from the discharge while it is sucking.
3) When the section line is extended to 40 m, the efficiency dramatically reduced.
The client want GN Solids Control could clarify the above.

GN Solids Control replied that,
1) It is right that the air flow goes out from the discharge hose while suction. So this moving air will produce high vacuum by the jet pack. That’s the working principle.
2) The minimum requirement for air supply to feed to the 40 pump is 17M3/hour with pressure 0.8 – 0.9 mpa. What is your air supply now? Clients replied that the pressure while sucking is 0.5 mpa and while unloading increase to 0.8 mpa…. Please advise how to increase the supply pressure while sucking?

GN Solids Control asked the client: Do you have an air storage tank between the air compressor and the pump? And what’s the volume of the Air tank? Clients replied that, there is no air storage tank available, the air is going direct to the pump
GN Solids Control expressed that; it will improve the pump performance a lot
to have air flow rate above 20m3/min Minimum needs to be 17m3/min
Also you need to have an air tank to work as buffer tank to connect to the pump.
By doing above you can make the pump working more properly.
3) 40 meters for water is fine but for solids suction is too long. It’s better to keep less than 12 meters. But as the discharge pressure is high. GN Solids Control suggests the client to reduce the suction hose to less than 12m, but they can have much longer hose for discharge.
4) The longer of suction hose, the longer of the suction time should be set. While leaving factory. GN Solids Control sets 10 Seconds for suction and 10 seconds for discharge. Clients can adjust the suction and discharging time according to job site situation.

Vertical cuttings dryer is a major separation machine for oil base mud drilling cuttings treatment. The VG dryer is used to further treat and recover drilling cuttings discharged from shale shaker, and in some cases, the cuttings from mud cleaner. The Vertical cuttings dryer cannot be used to treat drilling cuttings discharged from decanter centrifuge. As the solids discharged from decanter centrifuge is something like soil. The vertical cuttings dryer is equipped with screen basket with bigger opening like 0.25mm, 0.35mm and 0.5 mm. The centrifuge discharge is too fine. They will all pass the VG dryer screen basket. There are nothing can be recovered.

The control panel of the vertical cutting dryer must have connection between the main drive motor and the oil pump. So that when the main drive motor is turned on before the oil pump, it cannot be started. If there were not connections between the main drive motor and the oil pump, the VG dryer main motor can be started before or after the oil pump running, there may be no lubrication oil for cooling down while the main drive motor is running. It will make damage to the vertical cuttings dryer. The situation must be taken into consideration because this situation may be lead to damage the bearing or rotor due to Stopped or failure oil pump or leakage or drop of oil pressure .

These situation is abnormal, because according to the operating procedures must be start on the oil pump in the first until the oil pressure reaches 15-25 psi, after 5 minutes of running the oil pump go to start on the main drive to ensure that oil reached to all rotating parts , bearing .

Where is supposed if happened any drop in oil pressure or failure in oil pump the main drive shut off before happens any failure in bearing or rotor. ( for protection the unit)

2019 ADIPEC petroleum exhibition is coming on 11-14 November 2019 in Abu Dhabi National Exhibition Centre. ADIPEC is the largest petroleum exhibition in middleeast. It is also one of the largest petroleum exhibitions in the world. Most of the petroleum related companies in middle east, Affrica, Europe South America, North America, and Asia will come for the big events.

Below is the equipment GN Solids Control will take for the ADIPEC oil show. Visitors can check GN products quality on the booth and talk more details with GN engineers and sales team.

1) 9 inch mini decanter centrifuge
It is the smallest decanter centrifuge model made by GN Solids Control. GN Solids Control also makes popular size 14 inch and big bowl centrifuge 18 inch, 22 inch and the huge bowl centrifuge 30 inch.

2) Screen vacuum unit c/w with shale shaker
Screen vacuum unit is used together with shale shaker. The unit is fixed underneath the first screen of shaker deck. Screen vacuum technology is new technology that few company can make. It is GN Solids Control new products launched last year in 2018. If clients have interest, they can ask for more information. Clients can also visit GN website to check the jobsite video.

https://www.gnsolidscontrol.com/video/vist-vacuum-screen-technology-for-shaker-test-video

3) Solids and sludge vacuum transfer pump.
The vacuum pumps has wide application in oil field. GN Solids Control has 3 sizes vacuum pumps. The smallest pump can be used for cuttings/sludge transfer and use as a vacuum cleaner.
The vacuum pump can be used for long distance cuttings transfer, and then feed to cutting skips.

There are 2 feeding design from vacuum pump to skips:
a. The Rotaring feeder can be controlled by sensors, while a skip is full, it will feed to another skip.
b. The Triple skip station is controlled by valves.

https://www.gnsolidscontrol.com/video/gn-vacuum-cleaner-for-industrial-waste.html

https://www.gnsolidscontrol.com/video/gn-drilling-cuttings-or-sludge-vacuum-transfer-pump-working-video

4) Replacement screens for the popular shaker models

This week, a full package of compact oily sludge separation system was finished from GN factory in Beijing China. The compact design fast movable oily sludge treatment system is purchased by a reputable Environmental Solutions Company from China domestic market.

There are 3-stage separation equipment included in the oily sludge treatment system.

1) There is a 2-panel small footprint shale shaker equipped in the system for coarse solids separation. The model is GNZS752. As mostly, the oily waste come out from different sources and it is mixture of different wastes. There may be big size solids in side. The big sides solids may block or even broken the centrifuges. The small size shale shaker is used to remove the possible big size solids in the sludge.

2) There are 2 centrifuges in the oily sludge treatment system. The first centrifuge we call it decanter centrifuge. The decanter centrifuge model is GNLW224, it is a 2-phase separation centrifuge. The 2-phase decanter centrifuge is help to remove solids or soil from liquid mixture. The 9 inch centrifuge is a min size decanter centrifuge. The bowl diameter is only 9 inch, but the bowl length and diameter ration is up to 4. The longer ration can help to get cleaner liquid. It is the smallest centrifuge from GN Solids Control for industry separation.

3) The second centrifuge inside the oily sludge treatment system is disc centrifuge. It is also called 3-phase centrifuge. As the name mean, the disc centrifuge can separation oil, water and soil.

Many people may wonder: in case the disc centrifuge can separate and get oil, water and soil. While you add 2-phase decanter centrifuge inside the system? Really, the 2-phase decanter centrifuge is surely not to increase the cost. The disc centrifuge can only allow liquid mixture with liquid content less than 3%. Otherwise, it will damage the centrifuge. While the decanter centrifuge can allow liquid with solids content up to 15% ~ 20%. Decanter centrifuge is a necessary as pre-separation before disc centrifuge.

Thermal desorption unit is normally known as TDU. It is a kind of Ultimate equipment for oily waste management. The Thermal desorption unit (TDU) is a High-tech products, few company has the capability and technology to make it.

GN Thermal Desorption Unit is an ex-situ, non-incineration technology. It is designed to separate hydrocarbons from various matrices including oilfield drilling cuttings waste, oil based drill cuttings, oily contaminated soil, oil sludge and sand, filter-cake, tank and tanker bottoms, organic-based hazardous waste and contaminated soil in a non-oxidizing atmosphere without destroying the hydrocarbons. The TDU technology has been used extensively for waste management, the main function is for recovery of the oil from the waste material as a sellable product throughout the world.
Many clients showed great interest on the design of GN Thermal desorption unit (TDU) technology. There are mainly 2 designs developed by GN Solids Control.

From 2015 to June, 2016, GN Solids Control have been working on the design of the drum type TDU. But GN stopped that project after 2016. After that GN Solids Control shift to design the screw type TDU from July, 2016. So now, GN Solids Control does not make drum type Thermal desorption unit (TDU).

GN Solids Control latest design on is similar to TPS, but not TPS, TPS is a single screw in one tube, with different tubes.

GN Solids Control design is as following:
1) One tube, two auger system for self cleaning, it’s better than the single tube system.
2) Temperature can go up to 700 C degree which suits the drilling cuttings and oil sludge to recovery oil and water.
3) GN Solids Control have a dust removing unit before condensing, so it makes it easier for oil water, solids separation.
GN Solids Control already have the major components, like tube material, burners, air lock valves and Fin-Fan coolers etc in the factory to shorten the manufacturing time.

For any questions, please contact GN Solids Control sales team for support.

GN Solids Control made an oil-based drilling cuttings treatment system for a CNPC company. GN Solids Control made and designed and system per client’s job site situation. So it can suit for the clients’ situation well. Clients are happy with the performance of the OBM treatment system. Both the team leader and job site workers are satisfied with the system, and they said that, after applying GN waste management system. They can recovery more usable drilling mud. Their drilling waste and their drilling cost are both reduced. And they can save cost and manpower on the waste material shipment.

The oil based mud treatment system made for CNPC is a complete package. It is a skid mounted cuttings drying system with processing equipment, mud and cuttings transfer equipment, and electric control system.

Below is the major equipment included in the skid mounted oil based mud cuttings drying system:

Firstly, there is a vertical cutting dryer. The vertical cuttings dryer is mounted on a separate skid. VG dryer is also called VG centrifuge, it is the major equipment to treat the oil based mud and cuttings discharged from shale shaker. GN high quality vertical centrifuge can reduce the oil on cuttings to as low as 3% ~ 5%. In many countries and regions, less than 3~5% OOC can be discharged directly. Even not, it is already very dry like powders. It is easy for movement and for next process treatment.

Secondly, there is a 14 inch decanter centrifuge in the oil base mud cuttings drying system. The decanter centrifuge is used after the vertical centrifuge to reduce the mud weight. Enable the recovered mud qualified for drilling activity.

3 sets screw conveyors are equipped in the system. One screw conveyor is located under the shale shaker to collect drilling cuttings discharged from shale shakers. Another screw conveyor is located inclined to transfer the cuttings from shale shaker and feed to the vertical cuttings dryer. The 3rd screw conveyor is inclined and under the vertical cuttings dryer. It is used to transfer the drying cuttings from VG dryer to the cuttings containers.

GN Solids Control is the 1st one manufacturer in China who ever sent the drilling cuttings solidification unit to client’s jobsite. It was predictable that many comments regarding the performance of GN solidification unit would come back. More important is how to response to these comments.
GN is always keeping developing new products, which is the reason of the first unit drilling cutting solidification unit coming from GN. Some of the comments on GN solidification unit are positive, while some are very good suggestions for GN to perfect the design. The unit sent to site was designed whole assembly installed on one skid, which makes the unit too long to move and locate the unit easily. The new design divides the machine into 2 parts; one is for solidification agent storage, the other part is for mixing. These 2 parts could be located more freely according to the site space. Comparing with old model, the new one has larger tank for agent storage, on top of the tank, hand rails are installed. The agent bag pallet could be put on top of the tank, which greatly increases the working efficiency. Though 2 parts, the whole system still could be put into one 40ft container for oversea transportation.

GN-drill-cutting-Solidification-unit

Cuttings Solidification Unit

The drilling cutting discharged out of the shale shaker and decanter centrifuge could be fed into the solidification unit for treatment. However, there is a misunderstanding on the performance of the solidification unit: No matter how wet the cutting is, so long it is fed into the solidification unit; the dry material will come out. This is not correct. The much wet the cutting is, the more solidification agent will be used. Hence, the operator should make the cutting as dry as possible before feeding into the solidification unit.
GN’s solidification unit was proved greatly saved the man power on site as it can working continuously, the speed could also be adjusted as per the working condition. Solidification unit is one of the final solutions for water base drilling cuttings. Easy operation and maintenance are its advantages.

To be a professional manufacturer for solids control equipment, GN has nearly 10 years experience on decanter centrifuge research and fabrication. With these years development, GN decanter centrifuge have been supplied to the many giants in the oilfield industry. Subsidiary company of Halliburton, Baker Hughes, COSL and some other world famous company tried GN decanter centrifuges and gave good remarks.
A company has to keep improving if he wants to live for a long time. GN is an example for continuously upgrading the existing equipment and developing the new products according to the market feedback. At the beginning of foundation of GN Solids, GN only made middle speed decanter centrifuge that can only be used in normal drilling fluids recycling system, like barite recover process and some high speed unit could be used in fine solids separation. The middle speed model and high speed model will be kept in the same one mud recycling system.

gn-centrifuge-for-baker-hughes

GN Decanter Centrifuge for Baker Hughes

Thanks to the many kind clients’ feedback and valuable suggestions, the only thing GN did in the past years was to perfect the design of the centrifuge and improve the quality. Nowadays, GN’s 4th generation decanter centrifuge is under design processing. The best seller of GN C version decanter centrifuge could be electric controlled as fixed speed or variable speed. The PLC design high standard positive pressurized control cabinet is available. Top quality centrifuge bowl material duplex SS2205, optimized feeding direction and high standard material for solids discharge touching parts make GN decanter centrifuge could be adopted in waste cuttings management system, drilling fluids de-watering system, and crude oil tank bottom sludge cleaning out of solids control system. In the past two years of winter of oil business, it was widely application of GN’s decanter centrifuge that brought GN many orders which kept GN alive, even became bigger than ever before.
GN’s second facility close to HQ will be launched into use very soon. This facility is specialized used to develop centrifuges. Most industries could be a GN’s future market like the sewage treatment, environmental projects and food industry. Actually, it is because many inquiries coming from these industries, which urges GN to expand into these areas. Where there is a request, there is a market.

In past couple years, GN Solids Control is keeping research and development the new products so that clients could get a turnkey solution for drilling mud solids control and waste management. With the gradually issuing of the new environmental regulations, the drilling operators focus their eye on the final solution of disposal on the drilling waste.

gn solidification unit onsite (2)

GN Solidification Unit Onsite

Solidification unit is a new developed product of GN for the final treatment of drilling waste including drilling cuttings, oil bottom sludge and so on. It is not firstly designed and manufactured by GN; some other world famous waste management equipment supplier already made and sent if for onsite application. As a leading manufacturer of waste management equipment in China, no doubt, GN will develop this type of equipment.
So far, GN’s solidification unit already been sent to customer’s site for application and the feedback was good. GN’s solidification unit has 2 chemical storage tanks where the operator could put the cement and lime in it. By adjusting the feeding rate, the chemicals and waste would be fed to the mixing vessel. Here the waste would become inactive material that will not pollute the soil and water. Furthermore, the discharges can be used to pave the road for site.

gn solidification unit onsite (1)

Processing Result

Customer firstly fed wet waste into this unit and the treatment result is not as good as expected. Later, GN’s engineer told them this solidification unit is used to treat the waste what firstly should be treated by the dryer unit. Like the drilling cuttings could be treated much dryer by the high G force drying shaker and vertical cuttings dryer unit.
GN is also thankful for the good suggestions from customer on perfect the design of this unit. And GN did upgrade the design and make it more compact for site layout and transportation. For some points request good sealing, GN also took into consideration. Any interest on GN’s solidification unit, please feel free to contact with us for more information.

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.

GN-Solids-Control

GN Beijing company

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.