| 摘要 |
FIELD: measurement technology. SUBSTANCE: device relates to equipment used for geophysical examination of boreholes. It can be used to evaluate technical condition of casing string during period of borehole fixing and in process of its running. Device has case, spring-loaded measuring elements, mechanism for control and conversion of translations of extending elements into electric signal which is manufactured in the form of string pickup. Ends strings of pickup are made fast to cross-piece put on screw pair, the other ends of strings made fast to case of device. Extending elements are hinged to strings which carry converters of translations of extending elements into electric signal. Such design made it possible to eliminate clearance in system "tightener-rotary lever-measured surface". Deformation of meters ( extending elements) does not influence accuracy of measurements as it is not commensurable with it. EFFECT: enhanced authenticity of measurement of parameters of cross-section of boreholes. 3 cl, 2 dwg |
