2results about How to "Simplify the drilling process" patented technology

The present application belongs to coefficient determination method, and particularly relates to a method for determining the iron water absorption coefficient in gamma logging data interpretation. The method for determining the iron water absorption coefficient in gamma logging data interpretation comprises the following steps: step one, collecting information; step two, calculating the equivalent thickness; and step three, calculating the absorption coefficient. The present application has the following remarkable effects: the method of the present application establishes a fitting function by using the limited discrete data provided by the existing logging model experiment, calculates the iron water absorption coefficient corresponding to different measured borehole diameters by using the function, has high fitting accuracy of the absorption coefficient, and has the advantages of convenient calculation, easy programming, simplified drilling process, and saved drilling construction cost.

This utility model relates to the field of cylindrical lithium-ion battery manufacturing technology, and discloses a cylindrical lithium-ion battery airtightness testing device and system. The testing device includes a clamping mechanism covering the outside of the battery cell; a sleeve fitted onto the outside of the clamping mechanism; a fixed base located at the bottom of the sleeve, with an air inlet channel and a perforation channel connected; a fixed cap located at the top of the sleeve and forming a sealed cavity with the sleeve, fixed base, and battery cell, and having a through hole corresponding to the cap area of ​​the battery cell; a two-way valve located at the bottom of the fixed base and connected to the perforation channel; and a piercing mechanism located at the end of the two-way valve away from the fixed base, used to pierce the battery cell by passing through the two-way valve and the perforation channel when the two-way valve is open. This testing device improves the speed of airtightness testing during battery cell production and enhances the accuracy of the test data.