Free Point Indicator

free point locator 测卡仪

a tool designed to measure the amount of stretch in a string of stuck pipe and to indicate the deepest point at which the pipe is free. The free point indicator is lowered into the well on a conducting cable. Each end of a strain gauge element is anchored to the pipe wall by friction springs or magnets, and, as increasing strain is put on the pipe, an accurate measurement of its stretch is transmitted to the surface. The stretch measurements indicate the depth at which the pipe is stuck.

INDICADOR DO PONTO DE TRAVAMENTO - É um instrumento colocado dentro de uma coluna que se prendeu (ou travou) suspenso por um cabo elétrico e que registra o ponto onde esta coluna ficou presa.

A tool designed to measure the amount of stretch in a string of stuck tubing or pipe. The free point indicator is lowered into the stuck string of tubing or pipe on a conducting cable and is run to determine the deepest point at which the tubing or pipe string is free.