EP 0047878 B1 19851030 - PROCESS AND APPARATUS FOR MEASURING FOUNDATION INJECTION PRESSURE
Title (en)
PROCESS AND APPARATUS FOR MEASURING FOUNDATION INJECTION PRESSURE
Publication
Application
Priority
CH 689380 A 19800915
Abstract (en)
[origin: US4386531A] A pressure measuring section is arranged between a pipe section connected with an injection pump and a pipe end section or portion. The pressure measuring section is provided with a pressure measuring location which is determined by a measuring chamber arranged internally of a housing portion. Within such measuring chamber or compartment there is located a pressure-impinged portion of a pressure measuring transducer which generates electrical signals in accordance with the pressure prevailing in the injection medium. These electrical signals are inputted by a cable to a signal evaluation location. The measuring location is located in close proximity to an outlet opening of the pipe end portion or section. Between this outlet opening and the pressure measuring location there is arranged a packing device which seals the annular or ring-shaped compartment between the pipe end section and the wall of the borehole. Since the pressure measurement is accomplished internally of the infeed line or infeed line arrangement for the injection medium there is obtained a measuring result which is not falsified. Because of the close proximity of the measuring location to the injection location the measured pressure is essentially equal to the injection pressure at the injection location.
IPC 1-7
IPC 8 full level
E02D 3/12 (2006.01); E21B 33/138 (2006.01); E21B 43/25 (2006.01); E21B 47/06 (2012.01); E21D 11/38 (2006.01)
CPC (source: EP US)
E02D 3/12 (2013.01 - EP US); E21B 33/138 (2013.01 - EP US); E21B 43/25 (2013.01 - EP US); E21B 47/06 (2013.01 - EP US)
Designated contracting state (EPC)
AT DE FR GB IT SE
DOCDB simple family (publication)
EP 0047878 A2 19820324; EP 0047878 A3 19831123; EP 0047878 B1 19851030; AT E16302 T1 19851115; CH 652437 A5 19851115; DE 3172772 D1 19851205; US 4386531 A 19830607
DOCDB simple family (application)
EP 81106472 A 19810820; AT 81106472 T 19810820; CH 689380 A 19800915; DE 3172772 T 19810820; US 29462581 A 19810820