Patent ID: 11873713
Assignee: SHANDONG TIANGONG PETROLEUM EQUIPMENT CO., LTD.
Field: Civil engineering (Other fields)
Classification: CPC E  G | IPC E

Claim 0:
1. An oil well monitoring apparatus comprising:
a mixed liquid inlet and a mixed liquid outlet of a mixed liquid of oil, gas, and water in a ground pipeline connected to a wellhead of an oil well;
a gas-liquid separator, an inlet of which is connected to the mixed liquid inlet, and which is configured to separate gas and liquid phases of the mixed liquid;
a liquid monitoring member, which is connected between a liquid outlet of the gas-liquid separator and the mixed liquid outlet, and which is configured to collect liquid monitoring data, wherein the liquid monitoring member comprises:
a one-way throttle valve that turns on and off a pipeline between a liquid inlet and a liquid outlet of the one-way throttle valve by moving a spool in a valve cavity; and
a detection element configured to detect a signal indicating that the one-way throttle valve is in an open state;
a gas monitoring member, which is connected between a gas outlet of the gas-liquid separator and the mixed liquid outlet, and which is configured to collect gas monitoring data;
a data processing device electrically connected to the liquid monitoring member and the gas monitoring member, wherein based on the signal detected by the detection element, the data processing device is configured to obtain a time period when the one-way throttle valve is in an open state, and wherein the data processing device is configured to calculate a liquid production amount of the oil well based on the liquid monitoring data and calculate a gas production amount of the oil well based on the gas monitoring data;
a first gas branch, wherein the first gas branch is connected to the gas outlet of the gas-liquid separator; and
a second gas branch, wherein the second gas branch is connected to a casing gas pipeline of the oil well, and wherein the first gas branch is merged with the second gas branch before being connected to the gas monitoring member.