Standard on well integrity in the process of electric log

The well integrity standards, requirements and guidelines suitable for electric log operation were introduced. Electric log operation is often carried out in the whole life cycle of a well, including well drilling, test-well test, well completion, oil and gas production (e.g. water injection, fracturing, acidizing and stimulation) and workover, until the well is shut down or abandoned. Then, the key points of electric log operation were illustrated, the main electric log requirements were described by using 7 well barrier diagrams, and the acceptance standard of well barrier element were elaborated. Finally, the well control in the process of electric log operation was introduced. What’s more, the significance of cable high-pressure dynamic seal technology was particularly emphasized, and the research and application situations of " three-stage grease injection seal technology” were described.