drilling industry

GN’s drilling mud recycling system is always equipped to the drilling rig and provided together to the end user. Just like the China domestic rig manufacturer of SJ from Sinopec and RG from CNPC who always get the drilling mud recycling system from GN solids control to equip with their drilling rig, the provide to their customer together. Not too long time before, GN finished on set solids control system for 750 HP drilling rig for Sinopec SJ’s Turkey project.

GN 750HP Rig Mud System

GN ZJ30 Rig Mud System

750 HP rig in China would also be referred as ZJ30 which could drill to depth of 3000 meters. The drilling mud recycling for this rig is configured as below:
4 units’ mud tanks systems include 1 recycling tank, 2 active mud storage tanks and 1 mixing tank. On the first tank for sand trap, there is also a compartment used for trip tank. When the drilling pipe need to be pulled out and changed, the drilling mud in the trip tank compartment would be pump back to the drill hole for protecting the well wall and keep stable downhole pressure.
This mud recycling system is a 3 stages design with shale shaker, mud cleaner (de-sander & de-silter). 2 units of GNZS703E-HB shale shaker have the total capacity of 240 cubic meters. The customer could adjust the feeding rate to each of the shaker by getting a flow divider. 1 unit of mud cleaner is with 2 pcs 10” de-sander cyclones and 12 pcs 4” de-silter cyclones.
On the mud storage tank, the mud agitators and mud guns would be equipped to prevent the solid particles sedimentation down to the tank bottom. Each tank would be equipped 3 units agitator and mud gun.
This system adopts the 55kw centrifugal pump for transferring the mud to the hydrocyclones and the mixing pump is the same model as consideration of future easy maintenance and repaire. The trip tank also is equipped with trip pump for pumping the mud back to the downhole.
All the electric parts like the motor and control panel are explosion proof standard especially for application in oil drilling ndustry. GN could provide complete line for oil drilling rig mud recycling system ranging from 350HP to 2000HP, welcome for contact on the inquiry and solution.

The drilling fluids is nowadays widely used in drilling projects and under the strict regulation on environment protection, how to minimize the discharge of environmental hazardous waste solids and maximum the drilling fluids recovery is the mainstream topic among the industry.
The using of mud tank to store the drilling fluids coming back from the drill well has been widely accepted and recognized by all the drilling contractors. Without digging a mud pit on the ground greatly reduce the pollution to the soil. Especially for some limited job area, the mud tank would be the preferred choice for drilling fluids. The using of the various kinds of the solids control equipment highly speeds up the separation of solids in drilling fluids.

GN Drilling Waste Cuttings Dryer

GNCD930 Cuttings Dryer

The closed loop drilling mud solids control system, if complete configuration, will include 2 parts. Drilling mud solids control and waste drilling cuttings treatment. The purpose of this 2 parts is same for minimize the discharge of environmental hazardous waste solids and maximum the drilling fluids recovery.
For solids control, after treated by the shale shaker, desander, desilter, even the decanter centrifuge. The ultra fine solids particles would be removed out from the drilling mud, and then active mud could be re-used.
The waste cuttings treatment part is functioned to recovery as much as possible the drilling fluids and make the cuttings dry enough for easy transportation to further environmental friendly treatment process. The cuttings out from the solids control shale shaker and desander, desilter would be transferred to drying equipment first. The drying equipment would be different according to water base mud or oil base mud is used. A high G force drying shaker would be better for water base drilling mud cuttings. The Verti G cuttings dryer, e.g. GNCD930 cuttings dryer could be used for both the water base and oil base cuttings drying. The drilling fluids out from the drying equipment would be pump into high speed decanter centrifuge for ultra fine solids separation.
By doing so, the drilling fluids would be maximum recycled and no discharge to outside of the tank system. The discharge drilling cuttings is dry enough for further treatment. Greatly guarantees the environment protection and high working efficiency.