DOWNHOLE DOPPLER FLOWMETER
申请公布号:CA2009977(A1)
申请号:CA19902009977
申请日期:1990.02.14
申请公布日期:1991.08.14
发明人:SIMS, JACKIE C.;SUPERNAW, IRWIN R.
分类号:G01V1/40;(IPC1-7):G01V1/40
主分类号:G01V1/40
摘要:DOWNHOLE DOPPLER FLOWMETER (D#78, 904 -F) A well logging system which monitors the flow rate of a fluid flowing in a borehole traversinq an earth formation includes a sonde. A transmitter located in the sonde transmits acoustical waves into the fluid at a predetermined frequency. A receiver also located in the sonde receives reflected acoustical waves. The receiver also provides a signal corresponding to the received reflected acoustical waves. The provided signal is processed for being sent uphole by way of a cable. Electronics at the surface include circuitry which derives the velocity of the fluid in accordance with the frequency of the processed signal and the predetermined frequency. The circuitry provides an output signal corresponding to the derived velocity of the fluid flowing the borehole.
ROBINET A OBTURATEUR COMMANDE PAR UNE TIGE
DISPOSITIF DE TRAITEMENT DE RETRAIT DES FILS
DISPOSITIF A ELECTRETS ET SYSTEME D'AFFICHAGE LUMINEUX COMPRENANT UN TEL DISPOSITIF
DETECTEUR DE FUMEES PAR IONISATION A SENSIBILITE CONTROLEE
DISPOSITIF DE GUIDAGE A INERTIE
JOINT DE DILATATION FLEXIBLE POUR LE RACCORDEMENT DE CANALISATIONS RIGIDES
PERFECTIONNEMENTS AUX ACIERS RESISTANT A LA CORROSION
NOUVEAU DISPOSITIF PARE-CHOCS A HAUTE ABSORPTION POUR VEHICULES
OUTIL DE POSE D'UNE LIGATURE SUR UN FAISCEAU DE FILS
DISPOSITIF REGULATEUR DE DEBIT POUR CONTENEUR DE COULEE PAR LE FOND
POLYESTERS ACRYLIQUES RADIODURCISSABLES
DERIVES DE DIGOXIGENINE ET LEUR UTILISATION DANS DES RADIO-IMMUNO-ESSAIS DE LA DIGOXINE