Geology, geography and global energy

Scientific and Technical Journal

Geoecological, hydrogeological and hydrological studies of the natural waters of the Caspian Sea

2013. №4, pp. 139-150

Serebryakov Andrey O.  - Senior Lecturer, Astrakhan State University, 1 Shaumyan sq., Astrakhan, 414000, Russian Federation,, Geologi2007@yandex.ru

Serebryakov Oleg I.  - D.Sc. in Geology and Mineralogy, Professor, Astrakhan State University, 1 Shaumyan sq., Astrakhan, 414000, Russian Federation,, Geologi2007@yandex.ru

Serebryakov Aleksey O.  - D.Sc. in Geology and Mineralogy, Astrakhan State University, 1 Shaumyan sq., Astrakhan, 414000, Russian Federation ,, Geologi2007@yandex.ru

Fedotova Anna V.  - Vice Rector for Research, Astrakhan State University, 20a Tatishcheva st., Astrakhan, 414041, Russian Federation,, Geologi2007@yandex.ru

Semchuk Nadezhda M.  - D.Sc. in Pedagogics, Professor, Astrakhan State University, 1 Shaumyan sq., Astrakhan, 414000, Russian Federation ,, Geologi2007@yandex.ru

Geoenvironmental investigated the properties of natural waters of the Caspian Sea, and their technological properties and composition in relation to similar deep waters of the coastal land. Ground possible industrial processing offshore deep reservoir water to obtain valuable commodity components. The presented concept of interrelated and interdependent ecological studies in exploration and radrabotke deposits as well as in the processing of natural resources. Identified objectives and monitoring objects are defined stages of monitoring, controlled processes, types of work and research, the impact on the environment. Formation waters contain valuable components dissolved magnesium, calcium, sodium, iodine and bromine, which in modern technologies of water treatment can be retrieved in a cost effective level. Plastovey extremely gas-saturated water, so that they can be attributed to the extraction of the mining process to a "non-traditional sources" of energy. Produced water are below the saturation pressure of the gas reservoir pressures. Dynamic vyzkost water 0,49-0,52 mPa.s, resistivity to 0.045 Ohm * m According to the standard separation of produced water gas content is less than 1.53 m3/t, the volume ratio of water in the reservoir conditions reaches 1.015 m3/m3. 0,9–0,8 water gas saturation coefficient increases with the depth of water. The main components of the salt composition and changes in pumping sea water in various proportions with formation water processes of carbonate and sulfate deposition were found. This allows the injection of sea water into the reservoir to maintain the reservoir pressure (PAP) of productive deposits of the Caspian Sea and to increase the recovery ratio of raw materials. During injection is necessary to control the dissolved oxygen and ferric iron in seawater pumped whose interaction may welcomed the formation of hydroxide sludge in the reservoir, reducing the reservoir permeability and reduce their ultimate recovery. In the case of high concentrations of secondary salts necessary to identify and eliminate the conditions of their admission. In the formation of a water injection system, iron hydroxide and reduce intake capacity in injection wells needed injection of hydrochloric acid (solyanokislotnye bath). Hydrochloric acid (HCL) is effective in the presence of limestone or dolomite, to work in the sandstones to be applied hydrofluoric acid (or mixture of HCL and HF). To prevent contamination of reservoirs of hydrogen sulfide and sulfide corrosion of oilfield equipment to monitor for the presence of bacteria in sulfatnovostanavlivayuschih pumped seawater. Carbonates and sulphates of calcium and magnesium are the major components of the salt-forming when pumping water. Linear nature of the synergistic relationship between the changes of dependencies when mixed salts and sea water reservoir indicates a lack of sedimentation during pumping sea water into reservoir horizons will reduce the price because of the processes of PPD free unlimited amounts of seawater.

Key words: geo-ecology,hydrochemistry,natural water,dissolved gases,download,compatible

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