Zirax

Corrosion is a very severe problem in oil and gas fields, as many stages of technological processes imply the use of water either permeating from the geological formation or injected through the reservoir pressure maintenance system. Casing pipes, ground pipelines, pressure tanks and storage tanks suffer from internal corrosion increased by the presence of carbon dioxide and hydrogen sulfide, and sometimes from the presence of oxygen in the injected water.

Even within one day of exploitation, water which passes through the pay zone, the production string and the oilfield equipment may contain hundreds of kilograms of dissolved salts. Pressure fluctuation and temperature variation during the production process promotes solid scale forming.

Forming of asphalt, resin and paraffin deposits leads to well production rate decrease, premature failure of expensive equipment and additional well servicing.

Zirax offers POLYDEX inhibitors, which demonstrate a high dispersion effect on asphaltene, resin and paraffin deposits and improve crude oil rheology.

One of the most serious problems for oil and gas producing and refining companies is the contamination of products with hydrogen sulfide and light mercaptans. Hydrogen sulfide is an explosive and toxic substance, poisonous and which can cause serious damage to the respiratory and nervous systems, and in high concentrations it may even cause death. The high corrosiveness of hydrogen can cause failure of equipment and pipelines.

During the production of heavy oils, an increase in pressure in the pipeline equipment may be observed. Strong pressure differences between the tubing base and the wellhead cause deformation of the pumps and constrains oil production. Thus, the production of heavy oils also leads to equipment failure. Periodic cleaning of equipment is necessary due to the formation of paraffin plugs. To reduce the pour point of oils and to improve their rheological properties, some viscosity reducers and pour point depressants are used.

Zirax offers solutions for reducing the pour point of oils and lowers their viscosity with FLOWDIN and Z-Soft pour point depressants.

Drag reducing agents are used at different transportation stages of oil and oil products. Their application reduces the excess pressure at pumping stations, which leads to a decrease in accidents and risks of environmental accidents. Drag reducing agents are also required to improve the energy efficiency of oil pipelines and oil product pipelines, reduce costs when it is necessary to increase the throughput of oil pipelines.

Oil treatment in the oilfields is an integral part of the main processes associated with the extraction, gathering and transportation of commercial oil. The quality of the produced crude oil affects both the efficiency and the operational reliability of the main pipeline transport, and the product quality obtained from this oil in oil refineries. At later stages of oil field development, the water cut of produced oil increases substantially and may reach 90% or even more. The presence of mineral salts, resins, paraffin, and mechanical impurities in the produced fluids, which may act as emulsifiers, also contributes to the forming of stable water-oil emulsions. As a result, produced oil does not meet industry quality standard for the product. Repeated cycles of oil treatment lead to additional costs. The solution to this problem is to use highly effective DEMULTRIM demulsifiers.

The high level of water cut in production wells is one of the key problems in the oil industry. During production from old wells, more water is produced than oil. This leads to oil production costs increases.