sredne - hylumskya lisenced area comparison of the map of complex geochemical anomalies with the map...

Sredne - Hylumskya lisenced area

Comparison of the map of complex geochemical

anomalies with the map of prospective targets of layer

Ач2 (fragment)

The wells drilled out of the margins of geochemical

anomalies brought the water.

http://www.geochemistry.ru

Pangodinskaya group of raising. Western Siberia, RF

Map of complex geochemical anomalies


Graphical symbols:

Complex geochemical anomalies

Pangodinskaya group of raisings. Western Siberia, RF

Map of complex geochemical anomalies superimposed on the

map of anticline structures revealed by seismic exploration.


1. Nortern-Pangodinsk raising.2.Western-Pangodinsk raising.3.Pangodinsk raising.

Graphical symbols:


Geo-chemical survey + seismic survey

Pangodinskaya group of raising. Western Siberia, RF

Map of complex geochemical anomalies superimposed on the

map of anticline structures revealed by seismic exploration and drilled

wells.



Graphical symbols:


productive well

nonproductive well

The wells, drilled within geochemical anomalies brought the oil

Geo-chemical survey + seismic survey + drilled wells

Pangodinskaya group of raising. The Western Siberia, RF

The map of comparison complex geochemical anomalies with the

placing of anticline structures found by seismic exploration and data of

drilling deep wells.



Graphical symbols:


productive well

nonproductive well

Fig. Vostochno-Tarkazinskaya block.Location of well 1 on the seismic line

1088113.

• There is no structural element seen on seismic;

• Only some seismic facies were made on 3 profiles;

• Based on geo-chem analysis of Yugra, well # 1 was drilled with oil discovered at the depth of 3250m, 2600m.

Fig. Vostochno-Tarkazinskaya block.Location of well 5 on the seismic line

108834.

• There is no structural element seen on seismic;

• Only some seismic faces were • made on 3 profiles;• Based on geo-chem analysis

of Yugra, well # 5 was drilled with oil discovered at the depth of 2700m and another well was proposed.

The geological project task was to conduct exploratory geochemical surveys with snow cover (in winter), surface sediments (soils) and surface

waters (in summer) to assess the potential of such types of geochemical survey in Nizhnevartovsk

district of Khanty-Mansi Autonomous Area.

Dry well

Stavropolskoye fieldComparison of Seismic and Geochemical Data on

the Line of Seismic Geological Profile


Stavropolskoye field (Nizhnevartovsk district)

Oil Bearing Capacity Potential according to the Seismic Data

Interpretation,

- outline of the potential structural and lithological trap in YuV bed (under seismic data)

- border of С1 reserves

- border of the license block

- rupture anomalies, assumed according to seismic data

wells::2 6 -productive

4 8 -non-productive752 -planned

The legend:

productive well

non-productive wellplanned well

Stavropolskoye field.Predicted Deposit Comparison Map

– Seismic and Geochemical Data

The legend:

productive well

planned well geochemical anomaly

-seismic profiles

Rupture anomalies, assumed according to:

-seismic data

-integrated interpretation of geochemical and geophysical materials

-geochemical sampling points

-geochemical anomalies

-deposit boundaries assumed under the integrated interpretation of geochemical and geophysical




Stavropolskoye fieldComparison Map of Seismic and Geochemical

Data with the Further Drilling Outcomes,. Confirmation of

geochemical survey forecast

productive well

planned well

geochemical anomaly

dry well

The legend:-seismic profiles


-seismic data

-integrated interpretation of geochemical and geophysical materials

-geochemical sampling points

-geochemical anomalies

-deposit boundaries assumed under the integrated interpretation of geochemical and geophysical




Stavropolskoye field. Comparison Map: Seismic and Geochemical Data (1998), Seismic Data Re-interpretation Results (2000) and Drilling

Outcomes. An example of geochemical survey data confirmation by seismic data reinterpretation results

productive well

planned wellgeochemical anomaly, Trap contour

dry well

The legend:-seismic profiles


-seismic data

-integrated interpretation of geochemical and geophysical materials-geochemical sampling points

-geochemical anomalies-deposit boundaries assumed under the integrated interpretation of geochemical and geophysical




- boundaries of the traps in YuV1 (1) bed according to seismic data re-interpretation by Tumenneftegeofizika 19/98-99, 2000

Vizhomlyanskoye gas deposit (Predkarpatsky yield).

Comparison of Geochemical Survey Data with Further Drilling Data

-assumed deposit boundaries in deltaic sediments (according to the seismic worksinterpretation data)- geochemical anomalies

-geochemical sampling points-productive (commercial gas flows)-non-productive (water flows)

Complex geochemical anomalies are mainly

assigned to the maximum values of seismic waves

transit time between B3 and A reflectors (Jurassic

sediments), which is the evidence that oil deposits are associated with fringe zones of rocks-collectors of Jurassic

sediments.South Yamal license block. Map to compare complex

geochemical anomalies with the map of time intervals between B3-A

reflectors


Inte

rval

tim

e

Example of assessment of oil-and-gas capacity of a lithological trap and close agreement of geochemical survey data with

drilling data

165

157

161

- producing oil- producing water- “dry”

Wells:

- tectonic faults

- expected increase in the oil productive area

of Yu1-1 bed according to seismic data

- - complex geochemical anomalies

Forecast based on seismic

data

Geochemical data

producing oil well

geochemical anomaly

Producing water well

«dry» well

No Structure Name

Gas Bearing Potential

Assessment under

Geochemical Surveys

Well Sampling Results

1 Mostovskaya positive

positive

Non-commercial gas flow, well

Mostovskaya-2

2 Yuzho-Grabinskaya positive

positive

Commercial gas flow, well Yu. Grabinskaya-1,2,3,4,5

3 Vyzhomlyanskaya positive

positive

Commercial gas flow, wells Vyzhomlyanskaya-2,3,6,12,13

4 Vyzhomlyanskaya

negative negative,(beyond

geochemical anomalies)

wells Vyzhomlyanskaya-4,5,8,9,10

Projects Undertaken and Snap shot of Results:Results of geochemical surveys conducted on the territory of the Western

regions of Ukraine with the outcomes of further seismic and drilling activities



No Structure Name

Gas Bearing Potential Assessment under

Geochemical SurveysWell Sampling Results

6Rossovskaya

negativenegative,

(Northern block) well Rossovskaya-1 – no flow

7 Podoletskaya

negative Wels Podolbtsy-1 and

(beyond geochemical anomaly) Podolbtsy-2 were drilled

beyond the anomaly

(in non-optimal conditions

under seismic data reinterpretation)

8 Podoletskaya

positiveNot drilled(within geochemical

anomaly)

9 Susolivskaya positive

positive

Commercial gas flow, well Novoselki-12

10 Yuzhnorudkovskaya negative

negative, well Yu. Rudkovskaya-1

No Structure NameGas Bearing Potential

Assessment under Geochemical Surveys

Well Sampling Results

11 Yuryevskaya negativenegative,

well Yuryevskaya-1

12 Oselevskaya negativenegative,

well Oselya-1

13 Rogoznensky reef negativenegative,

well Bykov-6

14Knyagininskaya Reservoir Type

Seismic Anomaly* (under seismic materials

interpretation data)negative

negative,

well Knyaginichi-1,2

15 Yavorovskaya negativenegative,

well Yavorovskaya-1

16Voshchanetskaya Reservoir

Type Seismic Anomaly* (under seismic materials

interpretation data)negative

negative,

well Niklovichi-2,6

17Romanovskaya

negativenegative,

(upstructure portion) well Romanovskaya-1

Geochemical survey

The geochemical survey may be performed in area, as well as, along the seismic lines.

The geochemical survey along the seismic lines can be executed simultaneously with seismic exploration works with point spacing of geochemical tests along seismic lines, including sampling while blast-hole drilling by the specialists of the seismic department for placing the explosives.


Advantages:

Such approach to the performing of the works will significantly increase their informative value, and it will allow not only to study the geological structure, but also to obtain the information related to oil-and-gas-bearing capacity of subsoil.

The survey of geochemical samples prior to the seismic exploration works will allow to increase the efficiency of exploration services and determine the local areas for organizing of detailed works and choice of the points of drilling deep wells.Further it will help reducing the costs of exploration

It will considerably shorten the terms of discovery and development of the new field of oil and gas.


Apart from the territory of the Western Siberia, geochemical surveys were

conducted in areas and license blocks of:

Komi Republic – three license blocks

Bashkortostan Republic – one license block

Mari El Republic – one license block

Volgograd Region – five license blocks

Krasnoyarsk Territory – two license blocks


Blocks of the license and place in Western Siberia where our

company conducted geochemical researches


1. Mantoysky2. Yarkhuayakhsky3. Vostochno-Khokhryakovsky 4. Yuzhno-Ostrovnoy5. Severo-Kochevsky6. Tevlino-Russkinsky 7. Severo-Kogalymsky 8. Severo-Pokamasovsky 9. Longyugansky 10. Severo-Vostochno-Khulymsky11. Yarudeysky12. Stavropolsky13. Chatylkinsko-Udmurtsky 14. Kynsko-Chaselsky15. Lensitsky16. Vostochno-Perevalny17. Pangodinskaya area18. Severo-Nerutinsky19. Severo-Yubileyny20. Vostochno-Yubileyny21. Sredne-Khulymsky 22. Vansko-Namyssky23. Poluysky24. Sorumsky25. Severo-Kazymsky26. Vostochno-Padinsky

Our credentials: The Company implements its own solutions and technologies in geology, oil and gas field development. A number of technological solutions developed by the Company are protected by the patents of the Russian Federation.


THANK YOU FOR YOUR ATTENTION!


sredne - hylumskya lisenced area comparison of the map of complex geochemical anomalies with the map...

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