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The concept of direct geochemical searches is based on system,

complex studying of geophysical and geochemical parameters of a

sedimentary cut, on the basis of their interrelation and interconditionality

in space and time, and most brightly shown in the phenomenon

anomalies of geochemical and geophysical fields above deposits УВ. A

methodological basis of geochemical methods is repeatedly the

established fact of a formation of a twelve feet scattering of recoverable

gases (bitumen) and second time modified species over the deposits of

oil and gas, sampled in the surface waters sediments, in water and in the

air in the form of a gas- hydrogeochemical , litho geochemical , bitumen

and other anomalies. In aggregated form geological, geochemical model

deposits recoverable and twelve feet scattering seems to be in the form

of a area - loop brackets at the front anomalies geochemical indicators. In

practice , depending on the geological and tectonic structure of the

sedimentary section , type collectors , and how they are observed

saturation varied dispersion haloes . So much for the southern Siberian

Platform allocated 4 types of dispersion halos HC differing morphology in

the context of the situation : the ring , linear - banded , arched ,

combined.

Figure 1 Physicochemical model of oil and gas deposits

A - geochemical anomalies ( a- helium, b- hydrocarbon gases , in- liquid

hydrocarbon , biochemical parameters ; B - generalized Litho

geochemical section of the abnormal and geochemical zones (I-IX)

 

Methods of field and analytical work

Complex geochemical studies include: conducting geochemical field

work and laboratory chemical analysis and laboratory processing of the

actual materials graphical construction method together with the results

of geological and geophysical studies.

 

Geochemical field .

Carried out during the summer in the form of complex hydro

geochemical shooting on surface water sources and the free gas output.

Work is being carried on in the river system and includes : watergas ( RUVG , O2 , N2, CO2 , H2, He ) , hydrochemical (salinity , salt

composition , VROV , Br, H2S , pH, Eh) testing of surface waters.In

contrast to other technologies ( passive method "GORE-SORBER", USA )

developed method is "GORE-SORBER", which allows for more efficient

and express spending forecast oil and gas potential . The methodology

used allows for the study of trace gases closed ( OPG sludge ) and open

pores ( freely evolved downhole ) rocks. Sludge samples subjected to

thermal vacuum ( mechanical ) to determine RUVG degassing , CO2, H2,

N2, O2, and crushing and sieve analysis to determine the TOC . , HBA ,

heavy metals , carbonates and physico- chemical parameters.

 

geo-ecological research

- Ecological and geochemical survey area for contamination of surface

sediments ( soil, ground ) , water and air gaseous, liquid and solid

hydrocarbon compounds and their derivatives , heavy metals, nitrates

and nitrites , radioactive substances ;

- Systematic geochemical monitoring of the territory in the areas of oil and

gas processing times , metallic and non-metallic deposits , underground

disposal of industrial waste , oil storage facilities , oil depots , gas

stations, oil refineries and other industrial plants ;

- Geochemical control of tightness of gas- oil storage tanks , gas

pipelines with a precise definition of parts and leaks of hydrocarbons;

- Conducting ecogeochemical regime observations of environmental

conditions ( atmo- hydro and lithosphere ) in the areas of industrial waste

disposal , exploration and mining operations and existing enterprises;

- Ecological and geochemical survey of farmland over the snow , soil and

ground cover for their quality and pollution of nitrites , nitrates , heavy

metals and radioactive elements ;

geo-ecological research

- Ecological and geochemical survey area for contamination of surface

sediments ( soil, ground ) , water and air gaseous, liquid and solid

hydrocarbon compounds and their derivatives , heavy metals, nitrates

and nitrites , radioactive substances ;

- Systematic geochemical monitoring of the territory in the areas of oil and gas processing times , metallic and non-metallic deposits , underground

disposal of industrial waste , oil storage facilities , oil depots , gas

stations, oil refineries and other industrial plants ;

- Geochemical control of tightness of gas- oil storage tanks , gas

pipelines with a precise definition of parts and leaks of hydrocarbons;

- Conducting ecogeochemical regime observations of environmental

conditions ( atmo- hydro and lithosphere ) in the areas of industrial waste

disposal , exploration and mining operations and existing enterprises;

- Ecological and geochemical survey of farmland over the snow , soil and

ground cover for their quality and pollution of nitrites , nitrates , heavy

metals and radioactive elements ;

-Physico- chemical modeling of processes on the PC negative impact on

the natural geological medium ( atmo- hydro and lithosphere )

anthropogenic factors in areas of existing industrial and mining

enterprises , disposal of industrial waste and radioactive waste;

- Information and advisory services in the field of geochemistry of

hydrocarbons , ecology and modeling of ecological and geochemical

processes on the PC ,

- Chemical- analytical studies of natural objects ( gas , water and rocks )

in accredited chemical analytical laboratory ;

Works are carried out in a short time and in a professional manner .

 

Chemical- analytical studies

Chemical- analytical studies of natural objects are made

accredited laboratory NPF " Sibekoservis "?, equipped with modern

domestic and imported analytical laboratory equipment and include:

- Sample preparation ( crushing and sieving , weight analyzes) ;

Thermal vacuum and mechanical decontamination of water samples , the

washing fluid and drill cores ;

- Study of the chemical composition of natural and waste waters, soils

and rocks ;

- Determination of heavy metals and toxic substances in water, soils and

rocks ;

- Determination of the organic substances, mineral oil , and derivatives

thereof in water, soil and rock ;

- Chromatographic analysis of saturated and unsaturated hydrocarbons dioxide , hydrogen, helium , argon, water , soil, and rocks ( core slurry and

the washing liquid and coring deep wells) ;

- Chromatographic analysis of aromatic hydrocarbons ( benzene , toluene

, xylene ), water , soil and rock ;

- Chromatographic analysis of the chemical composition of natural gas

( free , water-dissolved , free );

- Determination of mercury , radon , helium, water , air and soil ;

- Determination of organic carbon and of chloroform bitumen in the soil

and rock ;

- Dosimetric and radiometric control of natural , industrial and household

objects;

- Determination of physical and chemical parameters of water, soil and

rocks ;

Chemical- analytical studies carried out in accordance with State

standards and certified procedures to certified equipment , qualified

personnel in the shortest possible time and at affordable prices .

 

Geochemical studies on sections of deep wells

One of the effective methods for the study of well sections are

geochemical studies ( geochemical logging) : gas , bituminological ,

Lithogeochemical . The most widely used was mud logging , resolution

which allows for gas saturation and component composition of

hydrocarbon gases rocks , water and washing liquid to carry out

operative analysis and evaluation of drilling penetrated sediments. In the

NPF " Sibekoservis " provides a detailed and in-depth study of the gas

component of the rocks through the use of effective methods of

decontamination -terminally vacuume washing liquid , thermal desorption

cuttings and core using highly sensitive gas-liquid chromatography ,

allowing to carry out the most complete extraction and research of

gaseous and liquid naphthides in a wide range -from deans and methane

to above, including the isomers , normal and cyclic compounds . The

latter allows a more reliable estimate and allocate ranges of oil and gas

saturation , as well as to determine the phase and component

composition of the reservoir fluid before opening , at the opening and

after the opening of the potentially productive deposits . We use the

technology of sampling and analysis of the pancreas , which allows to obtain reliable information on the composition of reservoir fluids , using all

geochemical information obtained during drilling.

 

NPF " Sibekoservis " performs in deep wells :

- Sampling the washing liquid ( slurry ), and , if necessary, the core ;

- Thermal vacuum degassing samples washing liquid ( slurry ) and

formation water ;

- Mechanical degassing ( MD ) core ( sludge );

-thermodistrotion cuttings and core samples ;

- Rapid analysis of chemical composition of the gas washing liquid ( slurry

) and formation water

luminescent- bituminological analysis of cuttings and core ;

- Determination of organic carbon in the core ( sludge );

- Lithogeochemical study sample washing liquid , cuttings and core ;

- Determination of petrophysical parameters of reservoir rocks ;

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