Oil extraction system and oil extraction supervisory system

Abstract

An oil extraction system is provided. The oil extraction system includes a sucker rod pump ( 10 ) provided for a production well ( 2 ) so as to pump up crude oil; a signal detecting section ( 12 ) for detecting a pump-off signal sent from the sucker rod pump ( 10 ); and an injection pump ( 20 ) provided for an injection well ( 3 ) so as to pressure-inject fluid which is used for secondary extraction or tertiary extraction. The pressure injection pump ( 20 ) is operated based on the pump-off signal detected by the signal detecting section ( 12 ).

1 . An oil extraction system comprising:
 a sucker rod pump provided for a production well so as to pump up crude oil;   a signal detecting section for detecting a pump-off signal sent from the sucker rod pump; and   an injection pump provided for an injection well so as to pressure-inject fluid which is used for secondary extraction or tertiary extraction,   wherein the injection pump is operated based on the pump-off signal detected by the signal detecting section.   
   
   
       2 . The oil extraction system according to  claim 1 , wherein the signal detecting section is an inverter for driving a power source of the sucker rod pump. 
   
   
       3 . The oil extraction system according to  claim 1 , wherein the signal detecting section is a superior controller of an inverter for driving a power source of the sucker rod pump. 
   
   
       4 . The oil extraction system according to  claim 1 , wherein the pump-off signal is transmitted to an inverter for driving a power source of the injection pump. 
   
   
       5 . The oil extraction system according to  claim 1 , wherein the fluid is water, a gas, or a surfactant. 
   
   
       6 . The oil extraction system according to  claim 1 , wherein a microorganism is used in place of the fluid. 
   
   
       7 . In an oil extraction system comprising a sucker rod pump provided for a production well so as to pump up crude oil; a signal detecting section for detecting a pump-off signal sent from the sucker rod pump; and an injection pump provided for an injection well so as to pressure-inject fluid which is used for secondary extraction or tertiary extraction, an oil extraction method comprising:
 detecting the pump-off signal with the signal detecting section; and   operating the pressure injection pump based on the detected pump-off signal.   
   
   
       8 . The oil extraction method according to  claim 7 , wherein the signal detecting section is an inverter for driving a power source of the sucker rod pump. 
   
   
       9 . The oil extraction method according to  claim 7 , wherein the signal detecting section is a superior controller of an inverter for driving a power source of the sucker rod pump. 
   
   
       10 . The oil extraction method according to  claim 7 , wherein the pump-off signal is transmitted to an inverter for driving a power source of the injection pump. 
   
   
       11 . The oil extraction method according to  claim 7 , wherein the fluid is water, a gas, or a surfactant. 
   
   
       12 . The oil extraction method according to  claim 7 , wherein a microorganism is used in place of the fluid. 
   
   
       13 . An oil extraction supervisory system, comprising:
 a sucker rod pump provided for a production well so as to pump up crude oil;   an inverter for driving the sucker rod pump;   a remote supervisory unit for manipulating the inverter;   a first radio communication section connected to the remote supervisory unit;   a second radio communication section for performing a radio communication with the first radio communication section; and   a computer connected to the second radio communication section.   
   
   
       14 . The oil extraction supervisory system according to  claim 13 , wherein a certain command is transmitted from the computer to the inverter via the second radio communication section at a prescribed cycle. 
   
   
       15 . In an oil extraction supervisory system comprising a sucker rod pump provided for a production well so as to pump up crude oil; an inverter for driving the sucker rod pump; a remote supervisory unit for manipulating the inverter; a first radio communication section connected to the remote supervisory unit; a second radio communication section for performing a radio communication with the first radio communication section; and a computer connected to the second radio communication section, an oil extraction supervisory method comprising:
 sending a certain command from the computer to the inverter via the second radio communication section;   receiving, with the remote supervisory unit, the certain command via the first radio communication section;   manipulating the inverter in response to the certain command; and   transmitting the manipulation result to the computer via the first and second radio communication sections.   
   
   
       16 . The oil extraction supervisory method, wherein the certain command is transmitted at a prescribed cycle.