View a published research article written by our team about New Detection Possibilities of Gas Hydrates Accumulations on the South Shetland Continental Margin.

Approbation and Efficiency

The FSPEF-VERS technology by our team has been used on more than 55 known oil and gas fields. The “deposit” type anomalies were fixed by the FSPEF survey on all oil and gas fields. The anomalous polarized layers (APL) of “oil” and “gas” type were chosen by VERS soundings in cross-section within the mapped anomalies. The “deposit” type anomalies were mapped also by FSPEF method within 70 perspective structures and separate areas from 97 examined.The attaining operability of the concrete practical problems solving provides the preliminary conclusions and recommendations generation on result of the executed measurement works right in the field, after termination of the stage of the field measurements immediately.

Application examples

 

Geoelectric investigation for the boreholes location within known oilfields in Kazakhstan

The main investigation results within the Uaz oilfield (WesternKazakhstan) are following (Below Fig. 1): 1) five mapped separate “deposit” type anomalies can be connected with the zones of tectonic-shielded traps of hydrocarbons; 2) all boreholes within the mapped anomalous contours are productive (G4, G11, G12, G14), and boreholes outside of anomalies contours (G10, G9, G13) are unproductive; 3) projected boreholes G15 (800 m), G6 (1400 m) and G5 (1200 m) are located outside of anomalous contours and it is reasonable to remove them into the points, disposed inthe central parts of the “deposit” type anomalies (the sounding points ## 5, 11, 12,13, 14).

The geophysical investigation on WesternKazakhstan oilfields show that the technology of direct searching and exploring the hydrocarbon accumulations by geoelectric methods allow to solve effectively the problems of discovering and mapping the sub-corniceand sub-salt oil deposits. The oil accumulations of such type are mapped at the Kenbye, Eskyne and other oilfields. The geoelectric data shows that the sub-corniceand sub-salt oil deposits can also exist at the Tulegen oilfield. On S-E. Novobogatinsk oilfield the depths for the oil-bearing layers, determined VERS method, are in good correlation with the drilling data.

Figure 1

Figure 2

 

 

 

 

 

 

 

 

 

 

Investigation for the further oil-and-gas prospecting within known seismic structures in Ukraine

Four anomalous zones, perspective for further hydrocarbons prospecting undertaking has been revealed by geoelectric investigation within the license block area in Chernigiv region. In northern block part only the structures #1 and #5 from six seismic structures are perspective on geoelectric investigations data (Above Fig. 2).The depths intervals of the possible hydrocarbon deposits on area #1 constitute 2650- 200 m, on area #2 ­- 2200-2350 m and 2700 – 3050 m. Two geoelectric anomalous zones have been revealed also in southern part of license block, which can be connected with hydrocarbon deposits in near salt-pin zone of Ivangorod salt dome.

Application of  satellite technology for iron ores and aquifers prospecting in Mongolia

The anomalies of the “zone of iron ore” and “zone of water-saturated reservoir” type have been identified and mapped within the license area in Mongolia on the result of satellite data processing and interpretation (Below Fig. 3). The tectonic fractures zones have been detected and tracked also within which the filtration water flows of the fractured-porous type may be present. These zones with width up to 40-50 m are the most promising for water searching.

Figure 3. Map of anomalies of the “zone of iron ore” and “zone of water-saturated reservoir” type, constructed on the satellite data processing results within the investigated area (Mongolia). 1 – scale of relative values of the mineralization intensity; 2 – promising sites for water searching; 3 – zone of tectonic faults with the presence of filtration water flows of the fractured-porous type (the zones width vary up to 40-50 m); 4 – zones of aquifer reservoirs.

Pr1_Sibir_en_18-300

Fig. 1. Vertical cross-section along profile 1-1a.1 – APL of “oil ” type; 2 – APL of ” gas ” type; 3 – APL of “basement” type; 4 – VERS points; 5 – tectonic fracture by geoelectric data.

Pr06_crio_en_14-300

Fig. 2. The vertical geolectrical cross-section, constructed on the VERS sounding data in Siberia region. Anomalous polarized layers of 1) “frozen rock”, 2) “water from melted snow”, 3) “oil”, 4) “gas”, 5) “rocks of high density” type.

Fig. 3. VERS results in V02 point on the Sobinskoye oil-and-gas field (Siberia region). Anomalous polarized layers of 1) “oil”, 2) “gas”, 3) “basement”, 4) “+”, 5) “-” type; 6 – depth for the layer top/ thickness.

VERS_Sibir_en_18-300

Донбасс_Космо_en_7-300

ЗасядькоСКИП-en_7-300

Fig. 4. Map of anomalous zones of “gas accumulation” type within perspective area of Donbass (Ukraine), constructed on the satellite data processing results.

Fig. 5. Map of anomalous zones of “oil and gas accumulation” type within perspective area of Donbass (Ukraine), constructed on the ground-based survey by the FSPEF method.

Geoelectrical investigations for water-bearing layers searching in “Kamenogorka” pumping station in Ukraine

FSPEF-VERS technology has been successfully used in 2009 for operative mapping of five zones with raised water-saturated rocks in specific rock complex – Carpathian flysh. Zones of water bearing collector spreading and underground water flow migration have been revealed and outlined by geoelectric investigation.

Figure 4. The vertical cross-section along profile 1: 1 – a relative degree of water mineralization; 2 – zones of crushing and moistening of flysh rocks; 3 – a surface rock layer (the clays); 4 – moistened friable sediments; 5 – sounding points.