vacuum pump

The main equipment to be used for OBM waste treatment is vertical cutting dryer and decanter centrifuge, depends on different countries environmental regulation, the oil content required for drilling cuttings disposal is different, normally below 5% is acceptable for developing countries, below 1% is acceptable for developed countries. GN vertical cuttings dryer treatment result for the discharged solids is OOC 3% to 5%.We also have standard design for drilling cuttings dryer system as a compact package for convenient transportation and operation.


There are different ways of feeding system to vertical cuttings dryer, including vacuum pump, drilling cuttings transfer pump, screw conveyor system.
Vacuum pump is 100% air operated pump, it can be widely used for electricity power supply area, and the space requirement is very small. It is the ideal equipment to transfer drilling cuttings, sand, cement, drilling fluids, waste water, oil sludge, animal waste, etc. materials, and the suction distance is up to 50m and discharge distance is max 1000m, especially for the high solids content material.


Drilling cuttings transfer pump is drived by hydraulic cylinder and S-style distribution valve, it can be used to transfer high solids concentration material, less moisture, big solids size and high abrasion material.
Screw conveyor system is traditional drilling cuttings transfer way, normally one set of screw conveyor picked the drilling cuttings from shale shaker, desander, desilter horizontally, one set of screw conveyor is installed slantly to pick up the drilling cuttings from #1 screw conveyor and transfer to vertical cuttings dryer. The installation space is larger than vacuum pump and cuttings transfer pump.
The vertical cuttings dryer discharged fluids flow to intermediate tank and the centrifuge feeding pump feed the fluids to decanter centrifuge to separate fine solids, the mechanical separation cut point is 2~5 microns. The treated fluids can be recovery to solids control system to prepare for new drilling fluids.

A new drilling cuttings transfer pump is introduced by GN solids control, which is more suitable for less space, less power consumption, high cuttings solids content, less flowrability, not only for oil & gas drilling cuttings, but also for HDD waste, mining tailings, dredging slurry, and other types slurry. The main application is to use the pump to transfer drilling cuttings to the pitless drilling cuttings treatment system.


Compared with traditional drilling cuttings transfer ways, like screw conveyor and vacuum pump, the cuttings transfer pump has the advantages as below:
1) Less space requirement
2) Less power consumption
3) No need big model air compressor
4) Easy installation, easy maintenance
5) Better abrasion resistance
6) Reliable performance, higher efficiency
7) Long distance transfer up to horizontal 100 meters, and vertically 40 meters
8) Centralized lubrication system effectively prolongs the service life of wearing parts
9) The lifting pad/point can meet offshore drilling requirement, we can make it approved by CSS and DNV 2.7-1 lifting certificate as per client’s requirement.
10) The electric motor and control panel can be with different explosion proof standard for option, like CNEX zone 1, ATEX zone 1 or IEC EX zone 1.
11) The bearing to be used is from world famous brand bearing for longer working life.


12) Suitable for high solids content cuttings, big solids size, less flowrablity
When the rod chambers at the front ends of the two oil cylinders are connected by high-pressure hoses, the rod chambers at the front ends of the pistons of the two oil cylinders are connected through an oil pipe to form a closed oil path. The rodless cavity connects the rodless cavity of the two cylinders with the main oil pump and the mailbox through the reversing valve. For more information, pls contact GN freely.

Recently GN solids control shipped one batch of pitless drilling waste management equipments for International oilfield service company, including high G drying shaker package, sludge vacuum pump, cuttings dryer.


The vacuum pump is 100% air operated pump to transfer drilling waste from waste pit to vertical cuttings dryer ( for OBM & SOBM drilling waste) and high G drying shaker modular ( for WBM drilling waste). No need electricity power, it is suitable for hazardous area application. The suction horizontal distance is up to 50m, discharge distance is up to 500 ~1000m. The max solids size to be transferred is up to 50 ~ 75mm based on different model, and the max solids content is up to 80%. There are 2 operation mode for option, automatically and manually working, the user can choose different operation mode for easy operation. The compact design structure is for easily installation and movement.


The high G drying shaker is normally used for water based mud drilling waste treatment project, the max G force is up to 8.0G so that the discharged solids will be much drier for easy disposal. The clean fluids drop down into the mud tank, the centrifuge feeding pump can transfer the clean fluids to decanter centrifuge for further treatment.


The vertical cuttings dryer is widely used to treat the oil based mud drilling waste management project, we have 2 models of vertical G dryer for option, GNCD930E with treating capacity 40 tons/ hour, which is the best sold model for standard drilling waste management system. The discharged solids with oil content on the cuttings is below 5%, it can be landfilled or disposal directly once it can meet the environmental protection regulations in the client’s country. The discharged fluids flow to a buffer tank, the clean fluids can be transferred by centrifuge feeding pump to decanter centrifuge for further treatment.

One unit of oil sludge treatment system for China client is shipped out recently, the design treating capacity is 15m3/h. A complete 15m3/h oil sludge treatment system made by GN solids control including vacuum pump unit, pre-mixing tank modular, shale shaker modular, chemical dosing unit, decanter centrifuge and 3 phase separation centrifuge modular. According to different material, we can provide customized design to add or remove the modular. The compact design in modular is for convenient operation and transportation.

  1. Vacuum pump is widely used to transfer waste oil, oil tank bottom cleaning sludge, drilling cuttings, drilling fluids, soils, sand, it is 100% air operated pump without electricity power.
  2. The vacuum pump transfer the oil sludge to pre-mixing tank modular, which with heating pipeline inside the mud tank to heat the oil sludge up to 60 degree. With chemical jetting and heating process, the emulsified oil can be easily treated and remove from the solids.
    For free oil sludge, it can be treated by shale shaker modular directly.
  3. The shale shaker modular with sealing cover and internal spray system is to separate the coarse solids from the oil sludge and reduce the solids content, it will protect the decanter centrifuge in the next step and extend the working life of the centrifuge screw propeller. If the solids content is too high, the screw propeller will be easily damaged; and the big solids will be easily block the centrifuge bowl.
  4. The decanter centrifuge can separate the fine solids from the oil sludge to reduce the solids content below 5%, by using proper demulsifier and chemicals, the separation cut point is up to 1 microns. The fluids treated by decanter centrifuge flow to the buffer tank then flow to the disc centrifuge, the disc centrifuge can separate oil, water and solids .

Recently one batch of solids vacuum pump are shipped to offshore drilling platform, it can be used to transfer drilling cuttings ( drilling waste), clean the cabin, clean the drilling platform, clean the mud tank, etc. It is an ideal equipment to transfer slurry with high content solids, high density, high viscosity.


We have 3 models of solids vacuum pump with nominal transfer rate of 40m3/h, 20m3/h, 10m3/h, the capacity will be varied for different material. For the max model GNSP-40B vacuum pump, the max suction distance is 50, the max discharge distance is 1000m, and max transfer solids content is 80%, the max allowed solids size is 75mm. The user need to prepare a air compressor for air supply to the vacuum pump, the air demand is 17m3/min. There are 2 mode for option, automatic and manual, for normal condition, automatic option will be selected, for special material and special working condition, the user can choose manual operation.
The smaller size vacuum pump is compact design and moveable design. The max solids size is 50mm, the max discharge distance is 500m, and air demand is 8m3/min and 4.2 m3/min.
Except for solids vacuum pump, we also provide other types transfer pump, like centrifugal pump, submersible slurry pump, shear pump, screw pump, etc. Compared with these pumps, the vacuum pump’s design is more compact, no need to use electricity, less power consumption, can transfer longer distance. Especially for offshore drilling platform, electricity power is limited to be used, vacuum pump is an ideal way to transfer drilling cuttings compared with screw conveyor and other types pump, just the user need to do small changes on the design to make it suitable for offshore drilling platform application.
For more information about our solids vacuum pump, pls contact with GN solids control.