Method and device for obtaining permeability of argillaceous sandstone
A permeability and rock sample technology, applied in the direction of permeability/surface area analysis, measuring device, suspension and porous material analysis, etc., can solve problems such as inaccurate permeability and porosity reduction, improve calculation accuracy, overcome Effects that are difficult to estimate
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Embodiment 1
[0044] The embodiment of the present invention provides a method for obtaining the permeability of argillaceous sandstone, such as figure 1 As shown, the processing flow of the method may include the following steps:
[0045] Step 101, obtaining the effective porosity, irreducible water saturation and median particle size of the target rock sample.
[0046] Step 102 , according to the effective porosity, irreducible water saturation and median particle size of the target rock sample and preset rock channel tortuosity parameters, the calculated value of the permeability of the target rock sample is obtained.
[0047] Step 103, according to the calculated value of the permeability of the target rock sample and the preset normalization parameter of the permeability of the rock sample, a standard value of the permeability of the target rock sample is obtained as the permeability of the target rock sample.
[0048] In the embodiment of the present invention, the effective porosity, ...
Embodiment 2
[0050] An embodiment of the present invention provides a method for obtaining the permeability of argillaceous sandstone, and the execution subject of the method may be a terminal. Wherein, the terminal may be a fixed terminal, such as a computer.
[0051] In this method, the terminal can pre-store the standardized parameters of the permeability of rock samples in different areas. Among them, the permeability of rock is an important parameter for logging evaluation of oil and gas reservoirs. The conduction performance of natural gas is good or bad. Standardization parameters can be set according to actual needs.
[0052] The terminal acquires and stores the standardized parameters of the permeability of rock samples in different regions can be varied, and an optional processing method is provided below, which may include the following steps:
[0053] Step 1: Obtain the median values of effective porosity, irreducible water saturation and grain size of at least two rock sam...
Embodiment 3
[0081] Based on the same technical concept, the embodiment of the present invention also provides a device for obtaining the permeability of argillaceous sandstone, such as image 3 As shown, the device includes:
[0082] The first acquisition module 310 is used to acquire the effective porosity, irreducible water saturation and particle size median of the target rock sample;
[0083] The second obtaining module 320 is used to obtain the calculated value of the permeability of the target rock sample according to the effective porosity, irreducible water saturation, particle size median and preset rock channel tortuosity parameters of the target rock sample;
[0084] The third acquiring module 330 is configured to acquire a standard value of the permeability of the target rock sample as the permeability of the target rock sample according to the calculated value of the permeability of the target rock sample and the pre-stored normalized parameter of the permeability of the rock...
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