The technology of trenchless digging is developed from directional drilling technology, require very small area of surface for the construction.  it only needs very small inlet and outlet area excavation. All kind of underground replacements of the pipeline construction start adopt this technology for minimum interference of surface have high effect of keep the cost in control.

In 1970’s the technology was developed and now is widely use on horizontal directional drilling, piping, tunnel digging, piping type of detonation are some use this method.  Now are widely use in water supply and drainage.  Laying power, gas, communications lines. Any type of pipeline construction and repair of old pipeline.  The archaeology use this method of digging to minimal disturb the ancient structures.

Horizontal directional crossing (HDD-Mud Recycling System) technology in oil and gas industry are laying pipeline across waters like river and lake.  The hub of railroad obstacles and areas has important function  that cannot be disturb is obvious using through Horizontal Directional enlarge hole that common diameter of pipe in 1.5 times larger.

The method of solids control principle used in Horizontal directional drilling is the control of mud solid phase technology.  The technology purpose remove the harmful mud, solids and keep the good solids through process on mud filter and cleaning requirements.  The current use of horizontal directional drilling, the recovery mud solids control is system composed from small to large as end user requires.  The choices of mud solids control system is need according the basics in below:

It needs to be clean or inhibit particle variable types and size

It need to be maintain the quality of the mud

The size of ability in drill, removal of solids and operation cycle rate.

Solids control system function as environmental protection system that is requires in every region of the world who are digging in to earth to harvest resource underground.

It is known to all that for the oil and gas drilling projects, there must be a solids control system for separating out as much as solids cuttings, but in HDD projects, in many places in the world, the separation unit is not a legal request.

Recently, more and more countries are establishing laws requesting the mud recycling system or mud recycling units, and some clients, although their countries have not yet established such laws, the company owners decided to use mud units for their drilling works, because of below benefits a mud unit provide:

1. greatly save the usage of materials, including water, bentonite and polymer

2. save the drilling cost by lower down the discharge disposed.

3. responsible for the surrounding and environment friendly.

What’s the main equipments for a HDD mud system?

For a high standard configuration, there are 3 steps separation and 1 step of mixing, the separation equipments include: 1. Shale shaker, 2. Desander, 3. Desilter. In order to save space and make the mud unit more compact, there is always a mud cleaner playing a role as combination of desander and desilter. And mixing system is a jet mud mixer consisted by a mixing hopper and a centrifugal pump for feeding.

Of course, per different jobsite condition and composition of mud, end users could change the solution, some use without desander, some without desilter. And some adds equipments for a further and cleaner separation with a decanter centrifuge and even a dewatering unit.

GN Solids Control is the most professional solids control manufacturer in China who designs and produces mud systems for HDD drilling and other drilling projects. GN has a series of available capacities, not only high configuration, but also economic configuration, from 150GPM to 1000GPM for HDD, CBM, TBM and Piling or water well drilling. For larger rigs in oil and gas industry, GN provides solids control systems from 250GPM to 3000GPM.

In order to enable the systems to be movable and more flexible, GN has hydraulic hoist, containerized and trailer mounted solutions available.