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US 11,959,879 B2Granted
Method and device for determining characteristics of metallic casing and casing attenuation
AssigneeSouthwest Petroleum University
InventorGuozhong Gao
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AssigneeSouthwest Petroleum University
InventorGuozhong Gao
Estimating the term…
Disclosed is a method and device for determining characteristics of metallic casing and casing attenuation, the method includes the following steps: obtaining the ratio of first magnetic field with metallic casing and without metallic casing at DC mode; obtaining magnetic related parameter of the metallic casing; obtaining magnetic permeability of metallic casing; obtaining the ratio of second magnetic field with metallic casing and without metallic casing at AC mode; obtaining electrical related parameter of the metal casing through the ratio of the second magnetic field and the magnetic related parameter of the metal casing; obtaining electrical conductivity of metallic casing through the electrical related parameter; obtaining casing attenuation of metallic casing through the magnetic related parameter and the electrical related parameter. The beneficial effect of this disclosure is: this method can obtain characteristics and casing attenuation of metallic casing without measuring impedance.
A method for determining characteristics of metallic casing and casing attenuation, comprising the following steps:
A device for determining characteristics of metallic casing and casing attenuation, comprising a processor and a memory, and a computer program is stored on the memory, and when the computer program is executed by the processor, cause the processor to:
Dependencies are inferred from the claim text.