In ancient Iran, horizontal drilling was used in the traditional way in digging aqueducts and with very smart techniques, which is about six thousand years old. And it was done by manual digging method.
Before the invention of the H.D.D machine, drilling operations in oil, gas and water pipeline projects were carried out by Boring and Pipe Jacking methods, which are still used in many projects to pass under obstacles such as roads. Iron rails, coated high voltage cables, rivers, etc. are used from the aforementioned techniques.

Currently, at the level of advanced and developing countries, a lot of attention is paid to new methods such as horizontal directional drilling (H.D.D), tunneling and micro tunneling to pass under obstacles, rivers, canal digging. huge water and sewage crossings, digging huge tunnels for vehicle passage and creating access roads between islands and main areas from under the seas and oceans, optical fiber transmission, electricity transmission and hundreds of other applications.

The first horizontal directional drilling was used in 1971 to pass a gas pipeline under a river with a width of 550 meters in America, and then in 1986 in Germany, the H.D.D method was used to pass an electric channel and urban pipeline, and in the following With the increasing progress of passing techniques and the completion of peripheral equipment to help increase and improve the power of the drilling machine, this method has reached its peak of evolution, so that now in America and Europe, a large percentage of the projects of passing underground electric and optical fiber cables and water branches , gas and oil and oil derivatives due to the undeniable advantages of this method, such as extreme accuracy, speed of work, economic efficiency, removal of disturbing parameters in urban environments and extraordinary environmental advantages, is done in this way, and every Every year, the number of HDD projects carried out in developed countries is increasing.
The first H.D.D project carried out in our country in 2013 was carried out by SAT company in the form of gas transmission line project “24”, which included two cases of passing the gas pipeline under the Gargar and Shatita rivers in the northern region of Ahvaz.

It should be noted that this project has been completed in cooperation with foreign partners of SAT company, but currently all the projects are being implemented by domestic specialists and experts with the best possible quality, and SAT company is proud to lead the HDD industry in the country. has localized and without the need of foreign specialists and experts and by saving large amounts of currency and in the harsh conditions of embargo, it has prepared and provided all the necessary hardware and software equipment, in this way, the knowledge of experts and elites of our country for Design and manufacture of parts and assemblies and reconstruction of various software have been used.