Deep sea lobe reservoir configuration characterization method based on well-to-seismic mode fitting

Abstract

The invention discloses a deep sea lobe reservoir configuration characterization method based on well-to-seismic mode fitting, which comprises the following steps: determining configuration element types and well-to-seismic response characteristics thereof; dividing a deep sea leaf configuration interface system; representing the reservoir configuration of the leaf system level; representing the reservoir configuration of the composite lobe series level; and characterizing the reservoir configuration of the composite lobe level. An idea is provided for carrying out underground reservoir configuration research by utilizing well-to-earthquake combination; scientific and reasonable prediction of flow paths, geometrical shapes, scale sizes and mutual superposition relations of sand bodies caused by different levels of deposition of deep sea leaves is realized. Effective characterization of reservoir heterogeneity of the deep-sea leaf oil and gas reservoirs is achieved, so that important geological basis and guidance are provided for well position deployment, well pattern design, injection-production correspondence analysis, remaining oil distribution prediction and the like of the deep-sea leaf oil and gas reservoirs, and therefore, the method has important practical engineering significance for reducing drilling risks of the deep-sea leaf oil and gas reservoirs and efficiently developing the deep-sea leaf oil reservoirs.

Description

technical field [0001] The invention relates to a configuration characterization method for deep-sea lobe reservoirs based on well-seismic model fitting, and belongs to the technical field of oil and gas field development. Background technique [0002] Deep-sea deposition is a hotspot and frontier field of oil and gas exploration and development in the world today. Among them, deep-sea lobe deposits are recognized as high-yield and high-yield deep-sea sediments because of their good reservoir performance, large planar distribution area, and relatively weak heterogeneity. The recovery factor of the reservoir also constitutes the focus of deep-sea system research. [0003] However, despite the high porosity and permeability of such reservoirs, their internal structure (connectivity, geometry and lithology) is affected by factors such as climate, sea level rise and fall, basin size and shape, and sediment supply. etc.) are complex and changeable, the main body of the lobe is o...

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Problems solved by technology

[0003] However, despite the high porosity and permeability of such reservoirs, their internal structure (connectivity, geometry and lithology) is affected by factors such as climate, sea level rise and fall, basin size and shape, and sediment supply. etc.) are complex and changeable, the main body of the lobe is often rich in sand, while the edge of the lobe is interlayered with sand and mud, the surface of the lobe develops water channels (supply water channels and external incision water channels), and the internal configuration units of different levels (leaf system, The superposition of each other, resulting in different degrees of horizontal and vertical connectivity, which severely restricts the efficient development of this type of reservoir

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