Metamorphic rock reservoir porosity calculation method and device and computer readable storage medium
A calculation method and porosity technology, applied in the field of porosity calculation method and device for metamorphic rock reservoirs, and computer readable storage media, can solve the problems of large errors and low precision, and achieve the effect of enhancing correlation and improving interpretation accuracy
Active Publication Date: 2021-06-18
PETROCHINA CO LTD
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[0003] At present, the calculation of the porosity of metamorphic rock reservoirs is basically based on the calculation model of porosity such as sand-mudstone section, which has low precision and large error
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[0072] In order to make the purpose, technical solution and advantages of the present disclosure clearer, the implementation manners of the present disclosure will be further described in detail below in conjunction with the accompanying drawings.
[0073] figure 1 It is a flowchart of a method for calculating the porosity of a metamorphic rock reservoir provided by an embodiment of the present disclosure. like figure 1 As shown, the method includes:
[0074] S11: Obtain conventional logging data, relative values of formation resistivity and core porosity values at multiple depth points corresponding to the core analysis data.
[0075] Wherein, the conventional logging data includes at least one porosity logging curve and resistivity logging curve among the three porosity logging curves.
[0076] S12: Divide the relative values of formation resistivity at multiple depth points into multiple distribution intervals.
[0077] Among them, the union of multiple distributi...
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The invention provides a metamorphic rock reservoir porosity calculation method and device and a computer readable storage medium, and belongs to the field of geological exploration. The method comprises the following steps: acquiring conventional logging data, and formation resistivity relative values and core porosity values of a plurality of depth points corresponding to core analysis data; dividing the formation resistivity relative values of the plurality of depth points into a plurality of distribution intervals; and respectively fitting the core porosity values of the plurality of depth points with logging values corresponding to the plurality of depth points on a porosity logging curve in the plurality of distribution intervals, and establishing a porosity logging interpretation model, the porosity logging curve being one of three porosity logging curves. According to the method and device, the correlation between the three-porosity logging curve and the core porosity value is enhanced, the interpretation precision of the porosity logging interpretation model is improved, after the model is established, the porosity of the target reservoir can be calculated according to the porosity logging interpretation model, and the defect of metamorphic rock reservoir porosity calculation is overcome.
Description
technical field [0001] The present disclosure relates to the field of geological exploration, in particular to a method and device for calculating the porosity of metamorphic rock reservoirs, and a computer-readable storage medium. Background technique [0002] With the deepening of domestic exploration and development, metamorphic rock reservoirs have become a relatively important object of exploration and development. Compared with traditional sedimentary rock reservoirs, metamorphic rock reservoirs have the characteristics of complex mineral composition, strong heterogeneity, and compact reservoirs. Logging evaluation of metamorphic rock reservoirs has always been a difficult point in the field of oil and gas exploration and development. [0003] At present, the calculation of the porosity of metamorphic rock reservoirs basically follows the calculation model of porosity such as sand-mudstone section, which has low precision and large error. Contents of the invention ...
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IPC IPC(8): G06F30/20G01V11/00
CPCG01V11/00
Inventor 蔡军于伟高王孝超黄显华王小明
Owner PETROCHINA CO LTD