Recognition method for underground single ancient channel under condition of dense well pattern
An identification method and channel technology, which are applied in wellbore/well components, earthwork drilling, geophysical measurement, etc., can solve the problem of not considering the thickness of sand bodies, avoid insufficient determination of longitudinal resolution, avoid tedious work, obvious effect
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[0042] The present invention is described in further detail below in conjunction with accompanying drawing:
[0043] see Figure 1-3 , the underground single ancient channel identification method under the condition of dense well pattern of the present invention, comprises the following steps:
[0044] 1) Carry out high-precision stratigraphic division and correlation for the wells in the dense well pattern area, establish an isochronous stratigraphic correlation grid with accuracy reaching the single-layer level, and then take a single layer as the research object.
[0045] Dense well pattern area means that the well spacing is small enough to ensure that multiple wells can drill into the same single paleochannel, the smaller the well spacing, the more reliable the identification results; the single layer refers to the stratigraphic unit vertically composed of a single sedimentary period ;
[0046] 2) Aiming at the single layer, along the direction of the paleo-flow directi...
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