Tight sandstone reservoir modeling method
A tight sandstone reservoir and modeling method technology, applied in the field of oil and gas development, can solve the problems of complex changes, large well spacing in new blocks, low dependence on seismic data, etc., and achieve accurate description of reservoir shape and spatial distribution characteristics, Increase the scope of influence and improve the effect of restraint
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no. 1 example
[0035] figure 1 It is a flow chart of the tight sandstone reservoir modeling method according to the first embodiment of the present invention. Such as figure 1 As shown, it mainly includes the following steps S10 to S60.
[0036] In step S10, based on the post-stack 3D seismic interpretation data and constrained by drilling data and logging data, lithological inversion is performed to obtain multiple inversion data volumes.
[0037] Specifically, firstly, the geological model database of the study area is established, using the post-stack 3D seismic data, constrained by the drilling data and logging data, the lithology inversion is performed by the wave impedance method or the lithology inversion by the gamma method, and the obtained Multiple inversion data volumes. In this embodiment, the inversion data volume in the form of a three-dimensional grid is preferably obtained by the gamma method, which itself is a data volume composed of a large number of three-dimensional gr...
no. 2 example
[0047] The above method is highly operable. It has been proved by the application of a certain block of Sinopec North China Dongsheng Gas Field that this method can more accurately establish a 3D lithofacies model of the target area reservoir, thereby realizing a fine characterization of the reservoir in 3D space. Taking a certain block of Dongsheng gas field in North China of Sinopec as the research object, how to apply the tight sandstone reservoir modeling method in this research area will be described in detail below.
[0048] The geological model database of the study area was established, based on the post-stack 3D seismic interpretation data, constrained by the drilling data and logging data, the gamma method was used for lithology inversion, and multiple inversion data bodies were obtained. Moreover, before performing lithology inversion, a variety of lithology data are interpreted according to the lithology types and response characteristics classified by logging inter...
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