Shaker screen is the most common and important wearing spares of shale shaker separator, such as solids control shale shaker, drilling waste drying shaker, comboned type shale shaker with desander and/or desilter, coarse shale shaker, etc…

In many cases, clients are looking for replacement screens to suit for their shale shakers purchased from various companies. But many clients many wonder that, every company have their own screen part no., they do not know how can they make sure that, the quoted screens can suit for their shakers and applications.

API RP13C is an internal standard for replacement screen manufacturing, labeling and packing. If the Screens are made per API RP13C, it proves that that the same API size from different makers are fully interchangeable. This is the root reason that all major screen users requested screens must be complied with API RP13C.

GN Solids Control makes various models replacement shaker screens which are all complied with API RP13C. GN Solids Control is the only one screen manufacturer from China who has third party test report from U.S lab for all the API sizes. Some companies said they have API RP 13C testing report, but it only cover a few API size. The reason is that, the qualified third party lab will test the samples offered by the manufacturer.

Sometimes, manufacture will have to provide more than 1 screen samples in order to get a certain API size. This should be the reason that, some OEM screen manufacturer have more than 1 part no, for the same API size: they design is for a API size, but after lab testing, the data approve it is another API size. Hence they have to adjust, and send samples again for a specified API size.

Besides replacement shaker screens, GN Solids Control is focusing on full line drilling mud solids control equipment, drilling waste management equipment, transfer equipment, as well as industry centrifuge separators.

GN Solids Control make various sizes and standard shale shakers, High G drying shakers, as well as screening separators to suit for various type of industries and applications.

Different market have different features on the equipment selections. Recently, 3 sets of double deck shale shaker and a set of mud cleaner are ready for shipment. They will be shipped to an European client.
The double deck shale shaker for oil and gas drilling mud system is a 6-panel big area model. The upper deck is with 3 pieces screen, screen area is 2.0 sq meters. The bottom deck is with 3 pieces bigger size screens, screen area is 2.6 sq meters. The total screening area of the 6-panel double deck shale shaker can up to 4.6 sq meters.

Compared with normal type single deck shale shaker, the function and advantage of double deck shale shaker is that, the upper deck utilize coarse size shaker screens for pre-separation to remove the big particles, it can greatly improve the bottom deck screening performance and capacity. And plus, it can extend and improve the lifetime of replacement screens. And then the bottom deck utilize necessary fine API shaker screens based on the mud condition. As the upper deck already removed all the big particles, the fine screens on the bottom deck can service a longer time.

The screens of the double deck shale shaker are equipped with mechanical screen fast pressing device, it can easily and quickly remove the screens. It is durable and reliable.

With the advantage of big screening area, and high G linear motion force, GN Solids Control is widely used for big oil and gas drilling rigs, especially wide used on offshore rigs and platforms.

Besides the 6-panel shale shaker, GN Solids Control also have a 5-panel double deck shale shaker, which is mostly used together with desander cone assemble and / or desilter cone assembly to work as a combo-type shale shaker separator.

The transmission structure of drilling mud agitator is mainly composed of driven motor, reducer gearbox, connecting device and mixing shaft assembly. There are not many forms of drilling fluid agitators commonly used in drilling fluids solid control systems. Among them, there are worm gear direct transmission and worm gear coupling transmission.

Mud agitator is used at trip tank, pill tank, desilter tank, mud suction tank, mud reserve tank, mud mixing tank. It is also used under the decanter centrifuge to avoid the mud settle down.

Mud agitators are normally used together with mud guns. Normally a mud agitator with a mud gun. The mud gun is used to support the 4 corners of mud tanks. GN Solids Control mud guns have 3 nozzles. Each nozzle]of GN mud gun can cover 120 degree, the 3 nozzles can cover totally 360 degree of the mud gun. The mud agitator is driven by electric motor. While the mud gun is driven by centrifugal pumps which are used for mixing or mud discharge.

Some manufacturers have also used worm gear and worm coupling drive. Worm gear drive is widely used in drilling fluid agitator due to its simple structure, large speed ratio and high reliability. Early drilling fluid agitators were almost all directly driven by worm gear. Although the worm gear coupling drive and belt drive are large in size, they have the characteristics of soft motion, which is good for protecting the overload of the motor. Therefore, some manufacturers will choose them.

The most commonly used agitator transmission mode is the gearbox reducer. The advantages of gear reducer agitator are high transmission efficiency and less maintenance. The disadvantage is large volume. Gear driven agitators are also divided into direct drive and coupling drive. The direct drive mud agitator is the most commonly used agitator drive form at present because of its simple structure and convenient maintenance.

GN Solids Control just finished a full package drilling mud solids control equipment for an Africa client. The equipment will be used for a new rig mud system.

There are 4 stage solids control equipment included in the package.

1) Firstly, there are 3 sets solids control shale shaker. The shaker model is GNZS594F-SHBF. It is a 4-panel linear motion shale shaker which is widely used in oil rig mud system.

Besides the 4-panel shale shaker, GN Solids Control also make other sizes liquid and solids separation equipment, includes single deck shale shaker with 2-panel shale shaker, 3-panel shale shaker, and 5-panel shale shaker. GN Solids Control also makes double deck shale shaker with 5-panels and 6-panels screen deck.

2) After the 3 shale shakers, it is a 3-in-1 mud cleaner, which is composite of a single deck shale shaker, a desander separator assembly and a desilter separator assembly. There are 3 no. 10 inch desander and 12 no. 4 inch desilter cone which are combined with a 4-panel big flow shale shaker to reach 1500GPM flow capacity.

3) After mud cleaner, there are 2 no. Decanter centrifuge. It is a high speed centrifuge model GNLW363D. One centrifuge is used with middle speed for recovery the usable particles inside the drilling mud and reuse it in case of in need. After some circulations, there will be more and more ultra fine solids which cannot be removed by shale shaker and desander / desilter separator,

The other centrifuge is used with high speed for ultra fine solids separation, it is to reduce the mud weight.

4) There is a mud mixing unit in the package. It is to prepare qualified new mud to feed for the oil rigs.

If clients are interested in any other models or other sizes drilling mud recovery system, welcome you contact GN Solids Control to ask for support.

Oilfield drilling Mud gas separator is also named as poor boy degasser. It is used to remove air or gases (methane, H2S, CO2 and others) from drilling mud. It is mainly used to remove the big bubbles with the diameter of about ≥Φ3 mm. Most of these bubbles are the expanded gas filled in the drilling mud in annular of wellbore. It would cause well kick if the gas not to be removed timely.

Besides mud gas separator, there is another degasser equipment in drilling mud solids control system: vaccuum degasser. It is used after shale shaker and before hydrau cyclone separators. It is used to remove the fine bubbles inside the drilling mud.
ZYQ-1000 and ZYQ-1200 Mud gas separator are the 2 popular models for drilling mud system. Mud gas separator is located before drilling mud system. It is used after BOP choke manifolds and before solids control shale shaker.

The model ZYQ-1000 means that, the tank inside diameter of the mud gas separator is 1000mm. The tank wall of the mud gas separator is 10mm. While plus the 10mm tank inner depth, the external diameter of the tank is 1020mm.

If for model GNZYQ-1200, it means the inside tank diameter is 1200mm, the outside tank diameter after adding the 10mm tank wall is 1220mm.

The Inlet line, outlet line, vent line and solids discharge pipe size can be customized per order request. The mud gas separator design pressure is 1.6 Mpa. It is with side connection It is Atmospheric during working. There is a pressure gauge equipped on the mud gas separator. 0 ~ 140 Psi (0 ~ 1 Mpa) Pressure gauge is matching for the pressure.

Some clients may ask for 0 ~ 500 Psi gauge, which equals to 0~3.5Mpa. The measurement range is too large for mud gas separator. It will affect the accuracy of the pressure values.

There is a release value on the outlet pipe of the mud gas separator. It is butterfly value, the size of the valve can be customized per order request.

There is also a 4 inch butterfly valve on the solid discharge pipe. The valve size can be customized per order request.
The capability of lowering the Mud gas separator to a horizonal position for transporting between locations with necessary supports.

The Screw conveyors is a simple and popular transfer device at oil and gas drilling field. As it is a rotating device, and at many job site, the top covers of screw conveyor augers are gratings, it caused some unexpected accidence.

One time, a clients contacted GN Solids Control to ask for support. He said they experienced by HSE issues at their rigs sides which were caused by screw conveyors. He said in the past year, some operators hurt their finger or foot by screw conveyors. It caused jobsite shot down.

They want know what safety protection GN Solids Control provide on the screw conveyors.

Firstly, GN Solids Control offers Full Length Safety Grab Wires and ESD Devices (emergency stop device) on start stop panels. Operators can easily stop the augers at any position nearby it.

Clients can choose Fixed speed motor starter or manual adjustable speed motor starter per order request. The control panel is capable for operating in +55 °C Ambient Temps.

All Electrical equipment and electrical accessories for the auger system is designed and certified for Hazardous Area with ground protection.

The auger motors and motor starter can be accordance with explosion proof standard for CNEX, IECEx or ATEX Zone 1 and Zone 2 Rated and suits for 460V/60HZ 3 Phase, 380V/HZ 3 Phase, or suits for customized power system. Clients confirm voltage and HZ before order.

GN Solids Control can provide motor starter with Emergency STOP Switches located Near the Augers. As an additional safety protection, GN Solids Control is capable to provide Audio / visual alarm system connected to the auger motor starters and located near the augers. The motor start equipped with Audio and visual alarm system will be automatically activated once the power is switched on followed by the actual auger startup with a safety delay time. And plus, the Audio and Visual Alarm to be in the OFF mode after some time once the auger starts operation. It is for giving ATTENSION to stuff nearby to let them aware about the start up of the screw conveyor, and ensure them have time to keep distance from the rotating device.

Vertical cuttings dryer is also called as vertical centrifuge. It is driven by motor and gearbox. The high rotating speed will generate high G force and therefor to separate the liquid and solids phase.

GNCD930G-GP is a fixed speed vertical cuttings dryer. The power is from a single ex-proof motor driving system. The motor drive the main pulley, the main pulley drive the gearbox housing via V belt, the gearbox drive the bell jar combination and screen basket assembly. Fix the gearbox input shaft, to make the gearbox output shaft speed little lower than gearbox housing speed, to drive the rotor assembly in a speed which is slower than screen basket assembly rotation speed. Thus, screen basket assembly and rotor assembly form same rotation direction separation machine with proper differential speed.

The power of GNCD930G-VFD VFD vertical cuttings dryer is from a dual ex-proof motor driving system. It is a variable speed dryer. The motor drive the main pulley, the main pulley drive the gearbox housing via V belt, the gearbox drive the bell jar combination and screen basket assembly. The auxiliary motor is a flameproof motor. The input shaft is driven by the V-belt through the main pulley, so that the power is converted inside the differential to produce a speed slightly lower than that of the gearbox housing on the output shaft, thereby driving the rotor assembly to a slightly lower speed. Rotating at a speed lower than that of the screen basket assembly. In this way, the screen basket assembly and the rotor total constitute a separation-discharge mechanism with a certain differential speed and high-speed rotation in the same direction. The main and auxiliary motors are controlled by the frequency converter to obtain different speeds and differential speeds. Realize the separation of different materials.

Besides vertical cuttings dryer, GN Solids Control is also capacity to make all major Drilling Waste Management for the liquid and solids separation, like Vertical Cuttings Dryer, HI-G Dryer Shaker, Decanter Centrifuge, Screw Pumps, screw conveyor, etc.