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Retrospective assessment of the structural models accuracy. Case study in the fields of Gazprom neft

Abstract

   The paper presents existing approaches of the structural models buildings and the accuracy assessing of the maps. The importance of the correct building of structural maps for the oil fields was shown. The retrospective accuracy as­ sessing was done for three fields. It is shown that some values of accuracy given in the specification may not reflect the actual error of seismic models. The accuracy is confirmed with the formal assessments provided in the report in drilling in a region uniformly covered by the control wells. However, the error can increase considerably in drilling in the "external" parts. The error estimation, carried out considering the date of well-drilling, displays an insignificant modification of it's value with the time. The obtained results can be used in the risk assessments of drilling new wells, as specified in the work fields and deposits of analogues.

About the Author

A. V. Ekimenko
Gazpromneft NTC LLC
Russian Federation

Saint-Petersburg



References

1. Instruktsiyaро seysmorazvedke (Instruction on seismic prospecting), Leningrad: Publ. of Ministry of Geology of the USSR, 1985, 80 p.

2. Instruktsiya ро otsenke kachestva strukturnykh postroeniy i nadezhnosti vyyaviennykh i podgotovlennykh ob'ektovро dannym seysmorazvedki MOV-OGT(pri rabotakh na neft' i gaz) (Instruction for assessing the quality of structural structures and reliability of identified and prepared objects based on se­ismic data of CDP seismic reflection method (for oil and gas works)), Moscow: Neftegeofizika Publ., 1984. - 40 p.

3. Levyant V.B., Ampilov Yu.P., Glogovskiy V.M. et al., Metodicheskie rekomendatsiipo ispoizovaniyu dannykh seysmorazvedki (2D, 3D) diyapodscheta zapasov nefti i gaza (Methodical recommendations on the use of seismic data (2D, 3D) for the calculation of oil and gas reserves), Moscow: Publ. of Central geophysical expedition, 2006, 40 p.


Review

For citations:


Ekimenko A.V. Retrospective assessment of the structural models accuracy. Case study in the fields of Gazprom neft. PROneft. Professionally about Oil. 2017;(3):19-25. (In Russ.)

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ISSN 2587-7399 (Print)
ISSN 2588-0055 (Online)