Author: gnadmin

A complete HDD mud system is consist of several essential components, including following:

1. Shale shaker for the 1^st step separation.
2. Desilter cones as 2^nd step separation.
3. Centrifugal pumps respectively for feeding the desilter cones and mixing hopper.
4. Mud gun and mud agitator.
5. Mud tank and corresponding a

   ttachments like lighting system and rails&ladders.

6. Electric control system.

In a standard design of 350GPM HDD mud recycling system, all above mentioned parts should be installed. And if such system is to be shipped to oversea customers, the cost and shipping time should be taken into consideration too. After discussion with an engineer from customer’s company, GN comes into a solution to make such system to be shipped in a container, in order to save time and money for end user.

1. To use a double deck shaker with desilter cones. In this case, the drilling mud to be treated firstly enters into lower deck screen for being treated by shale shaker, this screen mesh is not so fine as the upper layer. Then the liquid phase falls into tank below the shaker and pumped to desilter cones for further treatment. The upper layer screen is regarded as drying shaker for desilter cones.  In this way, two steps of separation are combined in one equipment, and a better separation result is achieved.
2. A smaller tank just 10mm smaller than the standard container size in width, and height lower than container inside height, so that the tank after dissembled the equipments, could be shipped by container. Vessels for containers are weekly scheduled while for bulk, it is monthly.
3. Storage capacity. You may ask how to ensure the storage capacity. Answer is if the tank is designed to enter a 40ft container while equipments shipped in an extra 20ft container, and the ideal storage capacity could be reached. End user’s engineer has his own solution which is to use an extra buffer tank for storage. And such buffer tank is easily to source locally. He could use GN’s agitators and mud guns for buffer tank.

In fact, at the very beginning, GN started business with HDD mud recycling systems. Like CPP, the largest petroleum pipeline contractor in China, only sources from GN Solids Control. GN earns a good fame by providing with TOP HDD contractors with TOP quality products.

For both OBM and WBM in drilling rig systems, the solids control systems are totally same, like shale shakers, desanders, desilters and solids control centrifuges. Sometimes there are degassers in front of shale shakers. But normally, the further treatments regarded as waste management systems are not exactly same, especially in standard drilling waste management.

Standard OBM Drilling Waste Management System:

1. Screw conveyor for collecting and transferring drilling cuttings discharged by solids control system. And another slope screw conveyor used to convey the drilling cuttings to vertical cuttings dryer.
2. Vertical cuttings dryer, use a centrifugal force to dry the cuttings, which shares same principle like a washing machine. GN Solids control is 1^st China Company who made the vertical cuttings dryers, and now it’s the 3^rd generation vertical cuttings dryer. This is well tested in jobsite.
3. Decanter centrifuge, the liquid phase of drilling mud treated after vertical cuttings dryer will be further treated by a high speed decanter centrifuge, like GNLW363BG/BG-VFD, which  is ideal solution for this application.

Standard WBM Drilling Waste Management System:

1. Same as OBM systems, the first adopted equipment is screw conveyor for collecting the drilling cuttings.
2. The second equipment in OBM and WBM system are quite different. In most WBM waste management systems, they use high-G shale shaker for drying the solids, like GNZS594HGE-LD.
3. Also decanter centrifuge with a high speed, same as OBM waste management systems.

In some cases, the operator uses vertical cuttings dryer in both OBM and WBM, like GNCD930 is suitable for both conditions.

May you have such kind of request, pls contact me at renee@gnsolidcontrol.com.

Mud tanks, bigger or smaller, are regarded as the base of a drilling system, no matter for oil and gas drilling mud solids control systems, or for HDD or CBM or TBM, or whatever.  When there is drilling and there mud is used, it is necessary to have mud tanks.

It is not a tough task for an engineer to design a mud tank by using the modern soft-wares like AutoCAD or 3D drawing tools, but how to help the customer to get an ideal tank at first time? Is the requested storage capacity of tank enough for design? GN Solids Control  here shares some tips.

1. When one is asking for a solids control system for oil and gas drilling, it means the drilling mud is from the well hole directly. In this case, we must take into consideration the weir height of shale shaker when choosing the height of mud tanks. Because if the total height of shaker weir and tank height is too large, it is possible that the mud can not fall from the pipelines from well mouth. This tip is especially for workover rigs. For meeting customers’ different requests, GN has designed its shale shakers to provide several optional weir types.
2. During transportation, what equipment in this system could be disassembled, while which equipment need to be fixed on tank and transported together? In practice, mud agitators are always on tank, while shale shakers and mud cleaners are always removed temporary.
3. Is there any legal requirement at the users’ local for the largest width or largest height? This must be took care.
4. In case of international business, the system need to be shipped by sea. What kind of sea shipment does the end user accept? Container or bulk?

With all above items cleared, one may now better how to choose the tank for the customer. Of course, the storage capacity is the basic requirement which should be meet at first stage. GN always believe to provide the customers with best and suitable solution.

At present, there are some solids control units to process drilling fluids including : shale shakers, mud cleaners, Desander, desilter, vacuum degasser, mud gas separator(poor boy degasser), slurry mixers, Jet Mixing devices, electronic ignition device, mud gun, centrifugal pump(sand pump), shear pump, decanter centrifuge. While being widely used in drilling industry, slurry dewatering and no dig industry.

Drilling solids control equipment and systems will process and recovery drilling fluids which comes from down hole. Solid control system and units are mainly separate drilling cuttings, recovery barite and effective separation of the solid particles. The treated fluids can be reused in order to reducing the cost of drilling and are environmentally friendly.

Drilling Role:

(1) Clean the bottom, carrying debris and keep the bottom clean, avoid drill bit damage, reduce wear and improve efficiency.

(2) Balance down hole pressure. Prevent blowout and leaking issues. Prevent underground fluid contaminate the Drilling Waste Management.

(3) Cooling and lubricating the drill bit and drill string. Reduce drill temperature, reducing drill wear cost and improve the life of the drill.

(4) balance the side wall of rock pressure in the wellbore to form a cake, a closed and stable wall. Prevention of pollution and reservoir wall collapsed.

(5) Effective transfer hydraulic power. Passing the required down hole drill motor power and hydraulic power drill.

(6) Suspended cuttings and keep weight of fluid. Reduce cuttings settling velocity and avoid damaging the drilling bit

(7) Due to fluids levitation force working on the drill pipe and casing. It can reduce overload when starting up the system.

 In summary, drilling solids control equipment is process the blood of the entire system, if the solid or particles contain of drilling fluids is too high, it may cause a blowout, or sticking fluid is not conducive to drilling speed and cost. After GN Solids control system process, the drilling fluids viscosity and weight will be stable in order to fast drilling speed and reduce the cost.

This article is written by GN Solids America: http://www.gnsolidsamerica.com/

In the Oil and Gas drilling field, for treating and dealing with drilling mud, there is not only solids control systems and waste management systems. But also, the liquid mud plants, which is also called as LMP. Besides the solids control system and waste management systems, GN Solids Control also have complete LMP or according equipments available.

 

What is LMP?

LMP is short for Liquid Mud Plant, which is mainly used beside a solids control system or other mud systems for storage the drilling mud. In order to avoid mud from settling, most important equipments used in LMP are mud agitators and mud guns. At a certain distance, usually every 3 meters, there is a mud agitator and beside each agitator, there is a mud gun. And also jet mud mixing equipments, like centrifugal pumps and mud mixing hoppers, used for adding and mixing the chemicals to the drilling mud and keep a desired mud proportion.

Who Use LMPs?

Anyone who use drilling mud in their projects or for their customers, may use LMPs. Those companies include but not limited to：

1. Drilling companies those who provide their customers drilling service with their own rigs and solids control systems.
2. Drilling Mud/Liquid companies, who do not participate directly in drilling works, but they provide drilling mud to the users and reclaim the mud back and save it for next use.

GN Solids Control also provide LMP to its clients both domestic and abroad. And also, some LMP users purchase equipments from GN Solids Control when renewing their LMP, because comparing with tanks, the equipments is to some degree consumable. And also, lots of large tank manufacturers have established a long-term co-operation with GN Solids Control by continuously purchasing mud agitators and mud guns from GN.