Meandering channel sandstone architecture characterization based on architecture seismic forward simulation

To improve the accuracy of the meandering channel sandstone reservoir characterization in offshore oilfield, this article completes the meandering channel sandstone reservoir architecture characterization of the NmII-3 layer of Low Minghuazhen Group in the Qinhuangdao 32-6 oilfield by the architecture-guided seismic forward simulation based on the meandering river depositional mechanism. By the research mentioned above, the seismic forward simulation identification criteria of composited meandering channels boundaries are summarized that when the mud layer thickness is greater than or equal to 1 m and the channel sandstone thickness is between 8 and 9 m, the mud layer between composite meandering channels can be identified. The seismic forward simulation identification criteria of single meandering channels boundaries are summarized that the elevation difference which is greater than or equal to 5 m can be identified while the channel sandstone is greater than or equal to 7 m. And the seismic forward simulation waveform features of elevation difference of channels, small sandstone among channels, and abandoned channel are summarized. The seismic waveform of elevation difference has two side-by-side troughs. The seismic crest center position of large channel sandstone is lower than the seismic crest center position of the small sandstone. The seismic crest center falls slowly and rises quickly from convex bank to concave bank in abandoned channel laterally. Finally, the architecture-guided seismic forward simulation method is established and the applying criteria are summarized in this paper. And the accuracy of the meandering channel sandstone architecture characterization with well logs and seismic data is improved.

[1]  Dali Yue,et al.  Hierarchy modeling of subsurface palaeochannel reservoir architecture , 2008 .

[2]  C. Fielding,et al.  Multiple cycles of wave-dominated estuarine deposits in low-accommodation settings, Cretaceous J sandstone, northwestern Nebraska , 2011 .

[3]  Changsong Lin,et al.  Depositional systems and sequence architecture of the Oligocene Dongying Formation, Liaozhong depression, Bohai Bay Basin, northeast China , 2011 .

[4]  J. Allen.  Studies in fluviatile sedimentation: Bars, bar-complexes and sandstone sheets (low-sinuosity braided streams) in the brownstones (L. devonian), welsh borders , 1983 .

[5]  A. Miall.  Reconstructing the architecture and sequence stratigraphy of the preserved fluvial record as a tool for reservoir development: A reality check , 2006 .

[6]  M. B. Muñoz-García,et al.  Sedimentary facies and three-dimensional reconstructions of upper Oligocene meander belts from the Loranca Basin, Spain , 2010 .

[7]  A. Hurst,et al.  Outcrop-based reservoir characterization of a kilometer-scale sand-injectite complex , 2013 .

[8]  Kurt J. Marfurt,et al.  Seismic texture analysis for reservoir prediction and characterization , 2010 .

[9]  Bruce S. Hart,et al.  Channel detection in 3-D seismic data using sweetness , 2008 .

[10]  Shengju Zhu,et al.  Changing characteristics of ultralow permeability reservoirs during waterflooding operations , 2013, Petroleum Science.

[11]  B. Jones,et al.  Fluvial Architecture of the Hawkesbury Sandstone (Triassic), Near Sydney, Australia , 2003 .

[12]  M. Gibling,et al.  Paleozoic vegetation and the Siluro-Devonian rise of fluvial lateral accretion sets , 2010 .

[13]  John C. Lorenz,et al.  Determination of Widths of Meander-Belt Sandstone Reservoirs from Vertical Downhole Data, Mesaverde Group, Piceance Creek Basin, Colorado , 1985 .

[14]  David Hodgetts,et al.  A new approach for outcrop characterization and geostatistical analysis of a low-sinuosity fluvial-dominated succession using digital outcrop models: Upper Triassic Oukaimeden Sandstone Formation, central High Atlas, Morocco , 2009 .

[15]  Mike R. Leeder,et al.  Fluviatile fining-upwards cycles and the magnitude of palaeochannels , 1973, Geological Magazine.

[16]  Andrew D. Miall,et al.  Reservoir Heterogeneities in Fluvial Sandstones: Lessons from Outcrop Studies , 1988 .

[17]  X. Chen,et al.  Influence of meandering river sandstone architecture on waterflooding mechanisms: a case study of the M-I layer in the Kumkol Oilfield, Kazakhstan , 2014, Petroleum Science.

[18]  Tingshan Zhang,et al.  Sedimentary architecture models of deepwater turbidite channel systems in the Niger Delta continental slope, West Africa , 2013, Petroleum Science.

[19]  T. Dunne,et al.  A mechanism of chute cutoff along large meandering rivers with uniform floodplain topography , 2010 .

[20]  M. Fustic,et al.  Seismic geomorphology and sedimentology of a tidally influenced river deposit, Lower Cretaceous Athabasca oil sands, Alberta, Canada , 2011 .

[21]  J. Stewart,et al.  Characterization of stratigraphic architecture and its impact on fluid flow in a fluvial-dominated deltaic reservoir analog: Upper Cretaceous Ferron Sandstone Member, Utah , 2011 .

[22]  Rong Li,et al.  Using a support vector machine method to predict the development indices of very high water cut oilfields , 2010 .