The example of reconstructing carbonate sedimentation process on the basis of seismic-stratigraphic and paleogeomorphological analysis

UDK: 550.834
DOI: 10.24887/0028-2448-2018-1-18-22
Key words: seismic complex, seismic facies, paleogeomorphological analysis, wave field, well logging, bioherm building
Authors: B.V. Platov (Kazan (Volga Region) Federal Unifersity), G.S. Khamidullina (Kazan (Volga Region) Federal Unifersity) I.A. Nouriev (Consulting Center CJSC, RF, Almetyevsk), I.P. Novikov (Tatnefteprom JSC, RF, Almetyevsk), I.N. Ognev М (Kazan (Volga Region) Federal Unifersity RF)

The article deals with the implementation of the seismic-stratigraphic analysis for carbonate deposits. The analysis is based on the sedimentation simulation conducted using paleogeomorphological analysis data. The seismic stratigraphic analysis was performed from the time section of the reflected waves obtained by the method of the common depth point on one of the deposits of the north-western part of the western slope of the South Tatar arch.

For the reconstruction of sedimentation and subsequent diagnosis of carbonate sediments were carried out seismic-stratigraphic binding reflections (reflections identification) using the well logging data within the study area. Density and acoustic logs were used and synthetic density and acoustic velocity curves were calculated for wells in which these logs were not performed. We traced all seismic reflections identified in the seismic-stratigraphic reference throughout the study area. We mapped time of the seismic wave run to the horizon of interest. Seismic attributes were calculated for the prediction of the distribution of facies in the study area. Forecast of seismic facies zones was carried out on the basis of well data and well logging. Paleogeomorphological and seismic facies analysis were performed based on predicted depositional facies zones and logic. To perform these analysis, well log data, seismic wave travel time maps, paleogeographic maps of the interest horizons, and seismic attributes were used.

Presented geological interpretation has allowed to identify promising area in carbonate rocks with improved reservoir properties – bioherm formed in almost all carbonate sediments represented by the section.

References

1. Seismic stratigraphy — Applications to hydrocarbon exploration: edited by Payton Ch.E., Publ. of American Association of Petroleum Geologists, 1977.

2. Shlezinger A.E., Regional’naya seysmostratigrafiya (Local seismic stratigraphy), Moscow: Nauchnyy mir Publ., 1998, 138 p.

3. Zhemchugova V.A., Rezervuarnaya sedimentologiya karbonatnykh otlozheniy (Reservoir sedimentology of carbonate deposits), Moscow: Proceedings of EAGE, 2014, 232 p.

4. Boganik G.N., Gurvich I.I., Seysmorazvedka (Seismic survey), Tver’: AIS Publ., 2006, 744 p.

5. Ampilov Yu.P., Ot seysmicheskoy interpretatsii k modelirovaniyu i otsenke mestorozhdeniy nefti i gaza (From seismic interpretation to modeling and evaluation of oil and gas fields), Moscow: Spektr Publ., 2008, 348 p.

6. Khisamov R.S. et al., Geologiya karbonatnykh slozhnopostroennykh kollektorov devona i karbona Tatarstana (Geology of carbonate complex reservoirs of Devonian and Carboniferous of Tatarstan), Kazan’: FEN Publ., 2010, 283 p.

7. Khamidullina G.S., Ziganshin E.R., Minnibaeva E.I., Khaliullin R.R., Study of reservoir properties of carbonate rocks based on analysis of reservoir quality index (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2015, no. 10, pp. 64–66.

The article deals with the implementation of the seismic-stratigraphic analysis for carbonate deposits. The analysis is based on the sedimentation simulation conducted using paleogeomorphological analysis data. The seismic stratigraphic analysis was performed from the time section of the reflected waves obtained by the method of the common depth point on one of the deposits of the north-western part of the western slope of the South Tatar arch.

For the reconstruction of sedimentation and subsequent diagnosis of carbonate sediments were carried out seismic-stratigraphic binding reflections (reflections identification) using the well logging data within the study area. Density and acoustic logs were used and synthetic density and acoustic velocity curves were calculated for wells in which these logs were not performed. We traced all seismic reflections identified in the seismic-stratigraphic reference throughout the study area. We mapped time of the seismic wave run to the horizon of interest. Seismic attributes were calculated for the prediction of the distribution of facies in the study area. Forecast of seismic facies zones was carried out on the basis of well data and well logging. Paleogeomorphological and seismic facies analysis were performed based on predicted depositional facies zones and logic. To perform these analysis, well log data, seismic wave travel time maps, paleogeographic maps of the interest horizons, and seismic attributes were used.

Presented geological interpretation has allowed to identify promising area in carbonate rocks with improved reservoir properties – bioherm formed in almost all carbonate sediments represented by the section.

References

1. Seismic stratigraphy — Applications to hydrocarbon exploration: edited by Payton Ch.E., Publ. of American Association of Petroleum Geologists, 1977.

2. Shlezinger A.E., Regional’naya seysmostratigrafiya (Local seismic stratigraphy), Moscow: Nauchnyy mir Publ., 1998, 138 p.

3. Zhemchugova V.A., Rezervuarnaya sedimentologiya karbonatnykh otlozheniy (Reservoir sedimentology of carbonate deposits), Moscow: Proceedings of EAGE, 2014, 232 p.

4. Boganik G.N., Gurvich I.I., Seysmorazvedka (Seismic survey), Tver’: AIS Publ., 2006, 744 p.

5. Ampilov Yu.P., Ot seysmicheskoy interpretatsii k modelirovaniyu i otsenke mestorozhdeniy nefti i gaza (From seismic interpretation to modeling and evaluation of oil and gas fields), Moscow: Spektr Publ., 2008, 348 p.

6. Khisamov R.S. et al., Geologiya karbonatnykh slozhnopostroennykh kollektorov devona i karbona Tatarstana (Geology of carbonate complex reservoirs of Devonian and Carboniferous of Tatarstan), Kazan’: FEN Publ., 2010, 283 p.

7. Khamidullina G.S., Ziganshin E.R., Minnibaeva E.I., Khaliullin R.R., Study of reservoir properties of carbonate rocks based on analysis of reservoir quality index (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2015, no. 10, pp. 64–66.



Attention!
To buy the complete text of article (a format - PDF) or to read the material which is in open access only the authorized visitors of the website can. .

Mobile applications

Read our magazine on mobile devices

Загрузить в Google play

Press Releases

19.11.2020
09.11.2020
21.10.2020