Dajan Srl is an UNI EN ISO 9001:2004 and UNI EN ISO 14001 certified service company with products core business in long stroke hydraulic surface pumping units, wellhead gas compressor and capillary coiled tubing.

Long stroke hydraulic surface pumping units: these are last generation hydraulic pump unit, which can reach a stroke length to over 9 meters, used in the field of artificial lift. The pumpjack is the surface unit commonly used for this purpose; these pumps have structural limits which limit the stroke length to a maximum of 5 meters and the strokes per minute to a maximum of 12-15 SPM; this to reduce the problems of resistance / fatigue and then rupture and wear rods . Sice the flow rate of a pump is calculated by the piston diameter x stroke length x rounds per minute, it appears obvious that higher flow rates and advantages can be achieved by increasing the stroke length and reducing the number of strokes. Additionally the long stroke hydraulic surface pumping units bring advantages in ease of installation, compact size, computerized management and maintenance costs / ownership.

Wellhead compressor unit: their typical application is the 'dewatering' in the so-called marginal wells. They are small compression unit , powered by the same produced gas or by electricity, installed on wells that are no longer capable of delivering (get in line) because of the low wellhead pressure. Lower well head pressure, based on the relation between pressure / speed / flow rate triggers also the phenomenon of keeping liquids in the well (water and / or gasoline) that with their presence contribute to the obstruction of gas production. The compressor compress the gas and increase the well head pressure to values such as to be able to enter into the production pipeline. The unit are also equipped with a small separator that allows the recovery and dispose of any liquids.

Coiled tubing: it is a continuous tube of steel usually with diameter from 1 inch to 1.5 inches. Dajan offers instead a light version of Coiled tubign with diameters starting from ¼ ". This tube is wound on a drum driven by a suitable hydraulic power unit. The hydraulic seal on the tube is carried out using the appropriate stuffing box (stripper); the presence of a lubricator and a BOP is required to allow the release and recovery of the equipment from the well while a special injection head serves for the movement of the tube into and out from the well. The coiled tubing allows to move and then to perform a variety of tasks such as: washing, facelift, injection of chemicals, acid treatments, cementing and, if equipped with appropriate equipment also housekeeping and millings. Where requires the coiled tubing can be cut and left permanently in the well as a capillary string to continuously lift the well by nitrogen or to inject foaming in order to help the production of the bottom hole accumulated liquids.