Patent ID: 11905822
Assignee: GUOXING HUIJIN SHENZHEN TECHNOLOGY CO., LTD.
Field: Civil engineering (Other fields)
Classification: CPC E  G  Y | IPC E  G

Claim 3:
4. The online measurement method as claimed in claim 1, wherein the step of according to the plurality of temperature data, calculating temperature standard deviations of each position point within the production layer of oil and gas wells at the plurality of time points within the preset time period by the computer programs performed by the processor, comprises the following steps:
S201, collecting temperature data of one frame of the optical fiber every N seconds by the distributed optical fiber temperature measuring equipment, after collecting data of M frames cumulatively, performing standard deviation calculation on the temperature data at each position point of the optical fiber to obtain standard deviation data of a first frame;
S202, after collecting data of a (M+1)th frame, performing standard deviation calculation on the temperature data at each position point of the optical fiber to obtain standard deviation data of a second frame, by using data of the last (M−1)th frames in the previous M frames and the data of the (M+1)th frame;
S203, performing the step S202 circularly, summarizing the standard deviation data of all frames in the present time period into a frame array of the standard deviation data; and
S204, independently extracting data of the production layer in the generated standard deviation data frame array, to obtain the temperature standard deviations of each position point in the production layer of the oil and gas well at the plurality of time points in the present time period, and generating a standard deviation change curve according to the temperature standard deviations.