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Unless the old type of crude oil explorations as shown in the movie <There Will Be Blood>, in modern times, the drillings are much gentler and it takes care of environment very well. And this can attribute to the employment of solids control system. The solids control system can help to remove the solids particles generated from drilling and also return the expensive drilling fluids back to the drilling procedure

For confirming the specifications of a mud tank system, here are several steps:

1st, to confirm the volume of mud tanks, there are several points to be taken into consideration:
1.1 the drilling structure, the drilling mud replenishment when tool is lifted or the overflow when the tool is lowered during drilling
1.2 the mud pump’s rated displacement volume.
1.3 the drilling speed of the project, especially the drilling speed of large-diameter topsoil;
1.4 the well bore’s complexity should be taken into consideration, for example, whether there is lost circulation and blowout risk, or whether it is necessary to reserve a variety of mud;
1.5 the type of drilling mud used and speed of drilling mud preparation.

2nd， How to define the minimum drilling mud volume used for oil and gas drilling.

2.1 international API method 1: well bore volume with 100 barrels added. One barrel in the US system is about 158.97 liters in the metric system, and 100 barrels is about 16 cubic meters.
2.2 international API method 2: Daily footage (well barrel volume) ‘s five or 6 times. The coefficient is usually 5.5.
2.3 international API method 3: maximum circulating capacity of mud pump multiplied by 0.618. The unit of maximum circulating capacity of mud pump is m3 / min. this calculation method mainly considers that bubbles in drilling fluid can fully overflow the liquid level, and the calculated result is the liquid level area (unit: m2).
2.4 domestic method 1 in China : well barrel volume * 1.5 ~ 2.0. with common coefficient as 1.75.
2.5 domestic method 2 in China: nominal drilling depth of drilling rig ÷ (20 ~ 22) * 130%. The common coefficient is 21.

Hope the knowledge we shared is useful for your work.

Just recently, GN has delivered three complete sets of oil rig drilling waste management equipment for a drilling company in Nigeria. In Nigeria and other African countries, there are strict laws to regulate the drilling activities especially when taking environment protection in consideration. In Nigeria, along with each drilling rig, there should be a complete set system for waste management, including drilling cuttings waste management and drilling fluids separation.

Drilling cuttings are mainly from the shale shaker. Shale shakers take the heaviest burden in a solids control system, removing most and largest solids particles. But there is one problem that the cuttings discharged from the shale shaker are always quite wet. The cuttings must be well treated before discharge. For one thing, if the wet cuttings are discharged directly, the chemicals on cuttings will damage the environment badly. For the other, the liquid phase on cuttings is drilling fluids, which are quite expensive. Disposal of them means disposal money.

GN has an efficient solution to help solve those problems:

1. GNCD930 Vertical cuttings dryer. This is used for reducing the oil on cuttings, which means, to dry the cuttings before disposal. In this way, the OOC could reduce to below 0.5%. It is quite popular for oil based mud cuttings’ treatment。

2. GNLW363 Decanter centrifuge. After the vertical cuttings dryer, the liquid phase still contains lots of fine particles, and not clean enough to be return to the drilling system. In this case the high speed decanter centrifuge is used to remove the fine particles from the liquid phase discharged from vertical cuttings dryer.

3. Telescopic skids for both decanter centrifuges and vertical cuttings dryer to allow the liquid phase to fall directly to their containers

4. Feeding and conveying equipment for the GNCD930 vertical cuttings dryers and GNLW363 decanter centrifuges. In a complete waste management system, there are screw conveyors for feeding the vertical cuttings dryer and screw pumps for feeding decanter centrifuge.

In this single PO, there are 6 sets of high speed centrifuges, 3 sets vertical cuttings dryers, 15 screw conveyors and 6 screw pumps included.

 

There was a big day in last week for both GN and GN’s client who purchased such a big liquid mud plant, cause all those 70 units of mud tanks were transported to the loading port from GN factory located near Beijing City. It was the repeated order from the client since he issued a trial purchase of 15 sets of tanks in last year. He was happy to see the high quality from a responsible manufacturer.

This client’s business is in field of drilling fluids service, by collecting the used drilling fluids, recycling the useful portions and getting the fluids to be well prepared for new projects. He has a huge space for storage and in need of huge mud tanks and necessary equipment for separation. GN Solids Control provides him a turn-key solution with following equipment:

1. For drilling fluids separation: client chose 3 main equipment from GN product gallery for his drilling fluids separation: GNZS594 shale shaker, GNLW452D middle speed centrifuge and GNLW363C high speed centrifuge. GNZS594 is a linear motional shale shaker with 4 pieces of shaker screens. GNLW452 is a big bowl centrifuge with middle speed, that is used for barite recovery or to choose out the particles between 5 to seven microns. And the high speed centrifuge with a rotation speed upto 3900RPM, it is for fine and extra fine particles from 2 to 5 microns.

2. If the separation equipment are used for moving out, the mixing units could be regarded the facilities for adding in. This system contains 4 sets of mud mixing hoppers with jet mud mixing centrifugal pumps for adding in the useful chemicals when preparing the drilling fluids.

3. Mud tanks for storage with a total volume 35000 bbl.

Welcome to contact Renee@gnsolidscontrol.co directly for more information.

Solids Control systems and equipment are quite important for a successful drilling project. An efficient solids control system can helps to remove solids particles out of the drilling mud. In this way, the expensive drilling mud could be reused in future drilling. What is included in a complete solids control system?

A complete solids control system, especially for a large power horse drilling rig, should have following equipment divided per tanks:

1. The trip tank. Per certain rig size, there should be a certain amount of drilling mud to be prepared, but during drilling, there is always some mud loss because of drilling or because of mud separation. So there should be a trip tank holding well prepared mud for compensate the mud loss. For the trip tank, there is always a mud agitator and a centrifugal pump as trip pump.

2. Settle tank or also called the shaker tank. Shale shakers are the first step separation of the solids control system, they are used to remove the most solids from the drilling mud with suitable vibrating G force and screen mesh. On a long shaker tank, after the shale shakers, there should be a degasser to remove the bubbles generated during drilling to ensure the safety and to protect the pumps in following steps. If there is a mud cleaner in this system, it should be on this tank, too. A mud cleaner is a combination of desanding cones and desilter cones fed by centrifugal pumps.

3. Active tank. It is a tank for decanter centrifuge. The decanter centrifuge is located after the mud cleaner, to do the barite recovery or fine particle separation. It is always fed by a submersible slurry pump or a screw pump

4. Suction tank for mixing and reserve tank for storage.

For more information, welcome to contact GN directly.

Pipe jacking is one kind of drilling works similar as Tunnel Bored projects, which need a pipe jacking machine to drill under the ground and the slurries generated from drilling shall be treated well before disposal.

For such projects, like for TBM projects, GN Solids Control has several optional solutions, including following:

1. An economic and compact mud unit GNMS-D series desanding units. This series are made of a double deck shaker and a desanding/desilter section and a catch tank. They have 2 steps for separation. A feeding pump is located on side of catch tank. It is flexible for its compact layout. GN has various capacities among 200GPM, 500GPM, 1000GPM and 1500GPM.

2. Self-contained mud systems GNMS-B series including a similar double deck shaker as the GNMS-D series including shaker and cyclones and cyclone feeding pump, and also a larger tank plus a mud mixing hopper. It can serve 2 functions: 2 step separation and mud mixing. It also ranges from 200GPM to 1000GPM.

3. GNTBM series slurry plant, as this client purchased from GN. They have 3 steps separation, shale shaker, desander and desilter, equipped by 2 large slurry pumps for feeding, and a compact design with 2 layers. There are 3 models for option, the 240cbm/hr, 360cbm/hr and 500cbm/hr, especially for the TMB projects.

Those above 3 kinds of mud recycling units are widely used in many countries, clients and end users are buying from GN directly, and also, lots of Chinese contractors are bringing GN’s equipment to all over the world. They are happy with the good performance and reliable service from GN professional team.

If you have similar queries or need more information about GN products, welcome to contact GN sales team directly by sending email to renee@gnsolidscontrol.com.

Considering the environment protection purpose and also the less consumption of drilling mud, there is always necessary for the HDD contractors to buy in reclaimers to be used together with their drilling rigs to recycle the drilling fluids and also reduce the transportation volume of solids discharges. GN Solids Control has been one of the most famous brands for providing such solutions for years. In the October or this year, GN Solids Control just fabricated a kind of customized mud reclaimer set to an international HDD contractor.

1. Why choose GN Solids Control?
GN Solids Control was established since year 2007 and ever since its establishment, it has been participating in the drilling mud separation projects for HDD contractors. Based on clients’ request, GN Solids Control has designed and made hundreds of systems. Cause a big proportion of GN’s equipment has been used for oil and gas industry and GN Solids Control has become the 1st API Certified solids control brand in China. GN applies the same standards for the HDD equipment as the oil and gas industries. GN always focuses on the high quality and reliable service.

2. What does GN Solids Control make for the HDD mud recycling?
GN Solids Control has several standards models for HDD mud reclaimers, with various treating capacities. Such reclaimers are equipped by a lower deck shaker, desanding or desilter cones, a catch tank and feeding pump for cyclones. They are compact in foot print and on their sides, there is always a mud mixing unit for mixing and prepare the mud.
Besides such compact reclaimers, GN Solids Control also has bigger solutions, with larger storage capacity mud tanks and also include in a mud mixing hopper and mixing pumps. They are easy for transportation on land and also in container.

If you have similar projects or have interests, welcome to contact GN Sales Team for more information.

WEFTEC 2021 was successfully held in America and it attracted quite a lot professional visitors. Among water treatment, an efficient separation is non-doubt an important procedure. GN Solids America has participated in the exhibition and brought to the event 2 compact but handy machines: GNLW224ET decanter centrifuge and GNSP-20B vacuum pump.

GNLW is the model GN Solids Control and GN Solids America name their decanter centrifuges, they are 2 phase decanter centrifuges designed with high speed rotation ability. In the code GNLW224, 22 shows the bowl diameter which is 22 inch and the 4 means the bowl length and diameter ratio. The 4 ratio is larger than 3. For each centrifuge size, GN has both 3 and 4 available. Among the whole GN centrifuge models, there are GNLW363 and GNLW364 decanter centrifuge with 14 inch diameter bowls, GNLW452, GNLW453 and GNLW454 with 18 inch bowl diameter, GNLW553 and GNLW554 with 18 inch bowl and GNLW764 with 30 inch huge bowl.

GNSP-20P is a middle sized vacuum pump. Vacuum pump is also called solids pump because of its high ability for allowing large particles. Unless other pumps, the solids pumps can handle even dry material like sand and small stones. The only size limit is the pipeline size. And by using only compressed air as driven force, those vacuum pumps don’t need electricity. They can be used in Explosive Proof conditions for CNEX, IECEX and ATEX. There are mainly 3 models of GNSP vacuum pumps, the largest one is GNSP-40B with capacity 40cbm per hour, and the other 2 models are respectively 20 cbm per hour and 10 cbm per hour, the 2 smaller models are equipped by wheels for flexible use.

GN Solids America is located in Houston, TX in USA, with warehouse and stock for main equipment. Welcome to visit GN Team there.

In the past years, the sludge treatment works are becoming more and more important because of the focusing on the environment protection. The environment protection in this field includes how to make the sludge less polluted before safely discharge. That’s why the efficient solutions for such sludge become more and more popular.

1. Screw press sludge dewatering:

Screw press sludge dewatering machines are coming more and more welcomed to clients. Screw press dewatering is a kind of economic choice which is also quite environmentally friendly. The working principle is just like when you are twisting a wet towel. The motor will generate a strong force for squeezing the wet sludge by changing the screw diameter and screw pitches. The tiny gaps between floating ring and fix ring will do the squeezing work, to leave the sludge into liquid and cakes. Comparing with other separating equipment, the screw press dewatering machines don’t need chemicals and will sure leave less contamination to the surroundings.
In a recent project, an ES Company purchased from GN Solids Control such a screw press dewatering and a vacuum pump.

2. Solids vacuum pump.

A vacuum pump is also called a solids vacuum pump, which allows in material with high solids content, even dry sand, just to make sure that the material largest particle size is within the limit as pump inlet diameter.
The solids vacuum pump can transfer the material to more than 50 meter away. It is fully air driven, no need for consumption of electricity itself. That’s why it can be located at Explosive conditions by being linked to an air compressor.

Based on your jobsite condition, GN Solids Control can offer customized designs with rich experiences and professional engineer team. For more information, welcome to contact GN sales team directly.

As leading separation solution provider, GN Solids Control has designed and provided separation systems to different industries. Recently, GN just fabricated a new system for a large construction project in North America, including following:

1. Coarse shaker: coarse shale shakers are equipped by rubber screens or gap screens with large openings to remove the large objects. If those large things falls into the tank, it will increase the burden for the shale shaker and also damage the pump.

2. GNZS706F Double deck shale shaker: Shale shakers are efficient equipment to take the heaviest burden for removing particles. By using suitable screen meshes, the shale shaker can remove all particles above 100 microns. A double deck shaker is even more efficient than single deck ones, because on upper deck they adopt one API number for screens to have larger holes, and on lower deck they adopt another API number with smaller holes. In this way, with one set of vibrating motors, there could be 2 stages for separation.

3. GNZS703F-16N Desilter cyclones. Desilter cyclones are also called desilter cones, they are cyclones with 4 inch diameter, and they are used to remove particles below 20 microns by centrifugal force. The cones are fed by a centrifugal pump and the material will be splashed onto inner surface of cyclones. Solids particles will fall down from cyclone bottom and liquid goes up out of cyclone from the top.

4. GNLW553C-VFD Decanter centrifuge. Decanter centrifuge is always located after the cyclones or at least shale shakers with fine screens. Decanter centrifuges can treat the material quite thoroughly by centrifugal force generated from high speed rotation. It is a commonly used equipment for fine particles from 2 to 5 microns. The limit is the inlet solids content. If there are too large particles, it may block or even broke the centrifuge. That’s why before the centrifuge there must be some other equipment.

5. GNDW Chemical dosing system. When there are even finer particles in the liquid, we shall invite in the chemical dosing system. It can flocculate the fine particles into bigger ones by adding chemicals like polymer or something else.

In a recent project, GN Solids Control has provided to an old client from Africa a serious of equipment. Those equipment are to be used for drilling waste management projects. They are kind of customized models including following:

1. 10 sets Variable Speed Screw Conveyor: 7x GNSC12B-12V and 3x GNSC12B-24V. Screw conveyors are quite widely used for transferring materials in a drilling rig system or in a drilling waste management system, or in both, especially when the drilling cuttings waste management system is located along with rig and work at same time. For example, one screw conveyor can be located horizontally under the shale shakers for collecting the cuttings, then a tilt positioned one is used to receive the cuttings and feed to the vertical cuttings’ dryers inlet hopper. Variable speeds are important for the screw conveyors, because the mud condition is changing and capacity is varying, too. A speed adjustable solution can help to solve this problem and allow the screw conveyors to be suitable for more conditions.

2. 8 sets Variable Speed Screw Pump. Same as screw conveyors, the screw pumps are used for feeding the treating equipment, too. The screw conveyor is used for the vertical cuttings dryers, and the screw pump is used for the decanter centrifuge. GN has VFD controlled screw pump and mechanical speed adjustable screw pumps for option. For example in the positive pressurized control panel of a GNMS-363 decanter centrifuge, there are 3 VFD’s applied, respectively for centrifuge bowl, centrifuge back motor and the screw pump for feeding.

3. 10 sets Control Boxes. Control boxes are also one of core products GN provides. GN Solids Control is a certified electric control panel manufacturer for both non-explosive proof control panels and explosive proof control panels, including CNEX, ATEX and IECEX.
Welcome to contact GN Solids Control for more information.