Patent ID: 8954281
Filing Date: 2015-02-10
Classification: E21B,G01N

Abstract:
1. An apparatus for testing properties of a wellbore fluid, comprising: a test chamber having a first platen and a second platen therein, the platens configured to simulate response of the fluid when moved through an hydraulically induced fracture in a subsurface rock formation; means for controlling a position of the second platen with respect to the first platen during testing; a pump for introducing the wellbore fluid into a space between the first platen and the second platen; a pump for introducing a pressure test fluid into contact with the wellbore fluid; a respective pressure sensor in fluid communication with a discharge side of each pump and a sensor configured to measure a parameter related to position of the second platen; a thermally insulated enclosure in which the test chamber is disposed; a heater for maintaining a selected temperature in the enclosure; and a data acquisition and control device configured to detect signals from the respective pressure transducers and the sensor.