Research on Apparent Resistivity Imaging of Transient Electromagnetic Method for Oil and Gas Pipelines Based on GA-BP Neural Network

Table 2

Experimental parameters, device parameters, and working parameters.

Type	Name	Value
Environmental parameters	Medium	Air
	Simulated burial depth	1 m
	Air permeability	4π × 10^−7 H/m
Device parameters	Antenna material	Enameled copper wire + timber framework
	Size of the transmitting coil	800 × 800 mm
	Turns of the transmitting coil	6
	Size of the receiving coil	400 × 400 mm
	Turns of the receiving coil	12
Working parameters	Excitation current	3 A
	Transmitting frequency	16 Hz
	Superposition times	10
	Multiple of preamplifier + multiple of main amplifier	8 + 16
	Sampling interval	1 μs
	Turn-off time	1.2 μs