Abstract: A core sample from an oil or gas well can be quickly and easily inserted and removed relative to a reusable sealing sleeve fixed within a test housing wherein the core sample is tested for both longitudinal and lateral strain in response to applied stress. Young's modulus and Poisson's ratio can be determined from the strain and stress information. Pressures and temperature can be set to simulate downhole conditions inside the apparatus.

Abstract: A fluid loss cell has an outlet through which fluid lost during a fluid loss test flows. This outlet is connected in closed pressure communication with a fluid measuring device that senses the amount of lost fluid received in the device and generates an electrical signal representative of the sensed amount. The signal is preferably provided to a computer so that automatic monitoring of the fluid loss occurs. The fluid measuring device contains blow off pressure and subsequent increased fluid amounts. Valves and pressure regulators are included in a preferred embodiment. A related method is disclosed.