Freely moving oil field assembly for data gathering and or producing an oil well

摘要

An oil field assembly for gathering data about or producing an oil well having a self regulating assembly for free movement by gravity or the differential pressure of fluids in the tubing string of a well from the surface of a well or to predetermined down hole positions for collecting data and or producing a well while freely moving between the surface of the well and predetermined positions comprising a self regulating traveling piston for free movement by gravity and or the differential pressure of the fluids of a well from the surface of a well and to predetermined positions for collecting data about a well between the surface and predetermined downhole positions, and having instrumentation connected to the traveling piston for gathering data about the well, and a landing housing located at the surface of a well for receiving the traveling piston, and a receiving station at the bottom of the tubing string for releasably receiving the traveling piston.