Measuring while drilling system

摘要: A measuring while drilling apparatus for use in the of subterranean wells comprises a plurality interconnected tubular housings which are insertable into and removable from drill string by wire line. hollow plunger on bottom is vertically shiftable with respect to fixed diameter orifice disposed path fluid flow. Fluid pressure forces derived effect movement forward away create pulses transmittable through surface. Sensors provided generate signals, converted downhole controller, sequential generation positive be indicated at surface well digital readout outputs various sensors carried housings.