Well tool for downhole formation testing

摘要

A well tool for evaluating a subterranean formation in a drilling environment through an exposed formation surface. The well tool comprises a tubular main housing (102) connectable to a well work string, and a probe (110) extendible from said main housing (102). The probe (110) is communicatively coupled to a sensor for measuring a condition in the well. The probe (110) can be manipulated by a signal set transmitted from the surface. <IMAGE>