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curton: »ØÌûÖö¥ 2014-03-07 19:11:18
curton: »ØÌûÖö¥ 2014-03-07 19:11:18
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Pulsed current cathodic protection effect on the dynamic behavior of electrochemical corrosion well casing Summary : Well casing corrosion of casing damage is the main reason . The results show that the well casing using pulse current cathodic protection technology than traditional DC cathodic protection technology is superior , but the lack of research on the dynamic behavior of the well casing electrochemical corrosion mechanism under pulsed current conditions hampered the promotion of the technology. Project fully into account many parameters adjustable pulse current , frequency, amplitude and duty cycle can be adjusted independently , and the AC pulse current component comprising these features . First, according to the status quo of China's oil fields, and select the typical characteristics of structure formation wells , cathodic protection in accordance with the existing standard methods , taking into account the resistive, capacitive and inductive characteristics of strata , including the establishment of the interface contains the casing wall sleeve pulse current cathodic protection system current loop model . Second, the phase boundary area well casing electrode pulsed current cathodic protection systems used to simulate left out electrical capacitors . Pulse current parameters were studied with double- layer characteristics , potential casing , casing corrosion current correlation between this study the dynamic behavior of the corrosion process . Finally, through computer simulation , laboratory simulation experiments and field application testing pulsed current parameters on the protective effect , while the casing pulse current cathodic corrosion protection process theory to improve dynamic behavior . Keywords : well casing pulse current cathodic protection corrosion kinetics |

2Â¥2014-03-06 08:34:59













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