哈萨克斯坦B油田M02段综合地震储层预测

doi:10.11720/wtyht.2021.2563

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Abstract

M02 member of Upper Dual Formation of Lower Cretaceous in B Oilfield in Kazakhstan belongs to braided fluvial deposits.The reservoirs are mainly gravel-bearing sandstone and fine sandstone.Sand bodies change rapidly in both vertical and horizontal directions.Uncertainty of reservoir distribution laws seriously restricts the progressive exploration and development process of the oilfield.Based on a new round of fine structure interpretation,the comprehensive application of a series of reservoir prediction techniques such as fine synthetic seismogram calibration,seismic forward modeling,seismic attribute analysis,conventional seismic inversion and geostatistical inversion was successfully implemented,which eliminated the multi-solution of seismic attribute analysis,made clear sand reservoir macroscopic distribution laws,and finely depicted the distribution characteristics of thin sand bodies in M02 breaking through the limitation of conventional seismic resolution.Finally,a comprehensive technological sequence of seismic reservoir prediction techniques suitable for this oilfield was established.Successful application of this technology sequence in this region provides a powerful basis for rolling evaluation and water injection development and has made a great contribution to increasing reserves and production of the oilfield.Meanwhile,it has reference and guidance significance for reservoir prediction in similar blocks.

Key words： braided fluvial facies comprehensive seismic reservoir prediction seismic attribute analysis conventional seismic inversion geostatistical inversion

Received: 02 December 2019 Published: 29 April 2021

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	Jia-Cai LIU
	Chong ZHANG
	Xu-Jun HAN

Cite this article:

Jia-Cai LIU,Chong ZHANG,Xu-Jun HAN. Comprehensive seismic reservoir prediction of M02 member in B Oilfield in Kazakhstan[J]. Geophysical and Geochemical Exploration, 2021, 45(2): 379-386.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2021.2563 OR https://www.wutanyuhuatan.com/EN/Y2021/V45/I2/379

Synthetic calibration profile of well B-FA

Forward modeling profile

RMS amplitude attribute map of M021

Well statistical sand thickness map of M021

RMS amplitude attribute map of M022

Well statistical sand thickness map of M022

Flow chart of comprehensive seismic inversion reservoir prediction

Constrained sparse spike inversion P-wave impedance profile

Predicted sand distribution map of M021

Predicted sand distribution map of M022

Blind well test lithologic profile of geostatistical inversion

Geostatistical inversion P-wave impedance Hollowed-out profile

Predicted sand thickness map of M021

Predicted sand thickness map of M022

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