Data acquisition system and method applied to petroleum exploration engineering
A data acquisition system and method applied to petroleum exploration engineering comprises a bridge plug and at least one data logger, where the bridge plug is made of a soluble material, the bridge plug with the data logger is placed in a petroleum exploration channel and gradually displaced to an area with cracks, so that the data logger can monitor temperature and pressure in real time, and then the data logger is retrieved to read and analyze data.
1 . A data acquisition system applied to petroleum exploration engineering, comprising:
a bridge plug made of a soluble material and configured to be placed in a petroleum exploration channel; and
at least one data logger mounted on the bridge plug, the at least one data logger being located in an area with cracks in the petroleum exploration channel after the bridge plug is expanded and set in the petroleum exploration channel;
wherein the at least one data loggers comprises a housing, and a pressure transducer, a temperature transducer, a data memory and a controller placed in a closed space of the housing; the pressure transducer and the temperature transducer are configured to monitor temperature and pressure in the area with cracks in the petroleum exploration channel in real time, and to transmit monitored temperature and pressure signals to the controller; and the controller is configured to convert the temperature and pressure signals into temperature and pressure data respectively, and to transmit the temperature and pressure data to the data memory for storage and retention; and
the bridge plug comprises a soluble bridge plug body and a soluble sleeve body hooped on the soluble bridge plug body, and at least one mounting hole is provided on the soluble sleeve body;
and the housing of the at least one data logger is at least partially placed in the at least one mounting hole and is fixed to each other.
2 . The data acquisition system applied to petroleum exploration engineering according to claim 1 , wherein the soluble sleeve body comprises a first hoop body and a second hoop body, the first hoop body and the second hoop body are symmetrically arranged and fixed to each other, at least one of the first hoop body and the second hoop body is provided with the at least one mounting hole, and the first hoop body and the second hoop body are both made of a soluble material.
3 . The data acquisition system applied to petroleum exploration engineering according to claim 2 , wherein the soluble sleeve body further comprises an elastic connecting wire; the elastic connecting wire is located between an outer wall on the first hoop body and a mounting area on the first hoop body for mounting the data logger, or the elastic connecting wire is located between an outer wall on the second hoop body and a mounting area on the second hoop body for mounting the data logger; and one end of the elastic connecting wire is simultaneously connected with one end of the first hoop body and one end of the second hoop body, and the other end of the elastic connecting wire is simultaneously connected with the other end of the first hoop body and the other end of the second hoop body, so that an inner wall on a half groove of the first hoop body and an inner wall on a half groove of the second hoop body are tightly adhered to an outer wall of the soluble bridge plug body, so that the soluble sleeve body is sleeved and fixed to the outer wall of the soluble bridge plug body, and an outer side of the elastic connecting wire is abutted against an outer wall of the data logger.
4 . The data acquisition system applied to petroleum exploration engineering according to claim 3 , wherein a convex strip is provided on the first hoop body or the second hoop body, and the convex strip is arranged continuously or at intervals along an edge of the inner wall of the half groove of the first hoop body or the second hoop body, and the elastic connecting wire is located between an outer wall of the convex strip and the mounting area on the first hoop body or the second hoop body for mounting the data logger.
5 . The data acquisition system applied to petroleum exploration engineering according to claim 1 , wherein the at least one data logger further comprises an infrared transmitting module and an infrared receiving module, and the infrared transmitting module and the infrared receiving module are electrically connected with and controlled by the controller respectively.
6 . The data acquisition system applied to petroleum exploration engineering according to claim 5 , wherein the data logger further comprises a rechargeable battery and a wireless charging coil, the rechargeable battery is electrically connected with the controller, and the wireless charging coil is electrically connected with the rechargeable battery.
7 . The data acquisition system applied to petroleum exploration engineering according to claim 6 , wherein the pressure transducer, the temperature transducer, the data memory, the controller, the infrared transmitting module, the infrared receiving module, the rechargeable battery and the wireless charging coil are all placed in the closed space of the housing, and the housing is made of an insoluble material.
8 . A data acquisition method applied to petroleum exploration engineering, comprising:
mounting at least one data logger on a bridge plug made of a soluble material;
placing the bridge plug into a petroleum exploration wellbore and gradually moving the bridge plug to a specified position;
after the bridge plug reaches the specified position, expanding and setting the bridge plug in the wellbore, so that the at least one data logger is located in an area with cracks and fracturing fluid in the wellbore;
placing the at least one data logger in an operating state;
monitoring temperature and pressure in the area with cracks in real time by a pressure transducer and a temperature transducer of the at least one data logger;
transmitting monitored temperature and pressure signals to a controller of the data logger; converting the temperature and pressure signals into temperature and pressure data respectively; transmitting the temperature and pressure data to a data memory of the at least one data logger for storage and retention;
dissolving the bridge plug in the fracturing fluid
after the bridge plug is dissolved in the fracturing fluid, floating at least one data logger to a mouth portion of the wellbore under the buoyancy of the fracturing fluid;
retrieving the at least one data logger, and communicatively connecting a surface computer with the at least one data logger reading the data stored in the data memory of the at least one data logger, and analyzing the read data by the surface computer; and
mounting the at least one data logger in a mounting hole of a soluble sleeve body and fixing the at least one data logger thereto, and sleeving and fixing the soluble sleeve body to an end portion of a soluble bridge plug body of the bridge plug to mount the at least one data logger on the soluble bridge plug body of the bridge plug.
9 . The data acquisition method applied to petroleum exploration engineering according to claim 8 , wherein the at least one data logger wirelessly transmits the data stored in the data memory of the at least one data logger to the surface computer using an infrared transmitting module, and/or the at least one data logger receives control instructions and configuration information for controlling operation of the at least one data logger using an infrared receiving module.
10 . The data acquisition method applied to petroleum exploration engineering according to claim 8 , wherein after the at least one data logger is retrieved, a rechargeable battery is charged by a wireless charging coil in preparation for next use.
11 . The data acquisition method applied to petroleum exploration engineering according to claim 8 , wherein an operating state of an indicator light of the at least one data logger enables a user to know corresponding device state;
when the indicator light of the at least one data logger is in an on state, the at least one data logger is in the operating state;
when the indicator light of the at least one data logger is in an off state, the at least one data logger is in a shutdown state; and
when the indicator light of the at least one data logger is in a flashing state, the at least one data logger is in an operating state of receiving or transmitting data.
12 . The data acquisition method applied to petroleum exploration engineering according to claim 8 , wherein the at least one data logger has buoyancy in the fracturing fluid due to a hollow and fully enclosed housing.