[0048] Example 1, such as Figure 1-3 Shown:
[0049] An intelligent oilfield simulation experiment system includes a three-dimensional heterogeneous reservoir simulation box 1, a simulated wellbore, a fluid injection module, a fluid production module, data acquisition modules 23, 28, an automatic control module 24, a constant temperature module 25, a saturation probe, Pressure sensor, temperature sensor and computer 22; figure 1 Middle Tc is a temperature sensor, So is a saturation probe, and P is a pressure sensor. The simulated wellbores are divided into injection simulated wellbores 14, 15, 16 and production simulated wellbores 11, 12, and 13;
[0050] The simulated wellbore is vertically arranged in a three-dimensional heterogeneous reservoir simulation box; the fluid injection module is connected to the injection simulated wellbores 14, 15, 16 through pipelines, and the fluid production module is connected to the production simulated wellbores 11, 12 through pipelines. , 13 connected;
[0051] The three-dimensional heterogeneous reservoir simulation box 1 is arranged inside the constant temperature module 25;
[0052] The three-dimensional heterogeneous reservoir simulation box 1 is provided with a saturation probe, a pressure sensor, and a temperature sensor. The constant temperature module 25 is also provided with a temperature sensor. The fluid injection module and the fluid production module are both Equipped with a pressure sensor, the above-mentioned saturation probe and the signal output end of the sensor are respectively connected to the data acquisition modules 23 and 28 through data lines; the signal output of the oil and water automatic metering devices 5, 6, and 7 set in the fluid production module The terminal is connected to the data acquisition module 23 through a data line;
[0053] The fluid injection module is provided with constant flow pumps 2, 3, and 4, and the fluid production module is provided with flow controllers 8, 9, 10, the constant flow pumps 2, 3, 4 and flow controllers 8, 9 , 10 are respectively connected to the automatic control module 24 through control lines 27 and 26;
[0054] The data collection modules 23 and 28 and the automatic control module 24 are connected to the computer 22 respectively. The computer 22 is used for communication and control between the various modules. The data acquisition modules 23 and 28 transmit the saturation, temperature and pressure parameters to the computer 22 in the form of analog quantities. The computer 22 is equipped with relevant software. Setting, the computer 22 determines whether each real-time parameter is normal. When it exceeds the normal range, the computer 22 transmits instructions to the automatic control module 24 so that it can automatically control the fluid production module and the fluid production module, thereby achieving production safety and efficiency 化.
[0055] The three-dimensional heterogeneous reservoir simulation box 1 includes a box body 84, a box top cover 81, a large piston 86, and a box bottom plate 82. The box bottom plate 82 and the box body 84 are fixedly connected by bolts 60, and the box bottom plate 82 and The box 84 is sealed with a rectangular frame gasket 83 with the same size as the cross section of the box 84; the large piston 86 is arranged in parallel in the three-dimensional heterogeneous reservoir simulation box 1, and its size is the same as that of the inner wall of the box 84 The cross-section of the large piston 86 is adapted to fit the large piston 86. A sealing ring is arranged around the large piston 86; a box top cover 81 with the same size as the outer wall of the box is closely arranged above the large piston 86; the bottom of the large piston 86 is filled with the box 84 Into the sand contact. The box top cover 81 and the large piston 86 move down to compact the sand 85 in the box.
[0056] The box wall 84 is provided with a pipe hole and a data line through hole, and the edges of the pipe hole and the data line through hole are provided with a sealing ring.
[0057] In the three-dimensional heterogeneous reservoir simulation box 1, a barrier 87 is arranged in parallel between the tank bottom plate 82 and the large piston 86, and a sealing ring is arranged around the barrier 87.
[0058] The thermostat module 25 is a movable thermostat, and the heat source of the thermostat is a nano-electric heating tube; the three-dimensional heterogeneous reservoir simulation box can be directly pushed into the thermostat, and the temperature can be monitored and automatically controlled in real time.
[0059] The fluid injection module includes a liquid storage tank 29, a filter device 32, constant flow pumps 2, 3, 4 and inlet valves 33, 34, 35; pipelines are connected to the liquid storage tank 29, a filter device 32, a constant flow pump 2, and 3. 4. The inlet valves 33, 34, and 35 are respectively connected to the injection simulation wellbore 14, 15, and 16; pressure sensors are arranged on the pipelines between the inlet valves 33, 34, and 35 and the simulation wellbore 14, 15, and 16.
[0060] The fluid production module includes outlet valves 36, 37, 38, flow controllers 8, 9, 10, back pressure valves 17, 18, 19, automatic oil and water metering devices 5, 6, 7 and collection tank 30; pipelines are connected in sequence Production simulation wellbore 11, 12, 13, outlet valve 36, 37, 38, flow controller 8, 9, 10, back pressure valve 17, 18, 19, automatic oil and water metering device 5, 6, 7 and collection tank 30; Pressure sensors are provided on the pipes between the outlet valves 36, 37, and 38 and the flow controllers 8, 9, and 10. The mutual cooperation of the fluid injection module and the fluid production module can simulate the actual process of oil and gas injection and production.
[0061] The simulated wellbore includes a hollow pipe 50, a slot 51 and a diversion hole. The slot 51 is arranged on the wall of the hollow pipe along the axial direction of the hollow pipe. The two ends of the hollow pipe 50 are closed; The diversion hole of is communicated with the pipeline 52; a sand filter screen is arranged around the outside of the simulated wellbore. The sand filter screen can prevent the pipeline from being blocked due to sand production in the reservoir during the experimental flooding process. The simulated wellbore can be arranged into different well types and well patterns in the three-dimensional heterogeneous reservoir simulation box to realize different oilfield conditions.
[0062] The data acquisition module connected with the saturation probe uses the Changzhou Tonghui LCR digital bridge resistivity meter to acquire the resistance value at the internal saturation probe of the model; the output of the saturation probe is connected to 12 external 16-channel switching boards , The switch board is connected to the resistivity meter through the data cable, and the resistivity meter is connected to the 9-pin serial port on the computer through the 232 communication interface;
[0063] The data acquisition module connected to the pressure sensor uses the KLM-4514 analog acquisition module of Beijing Kunlun Coastal Sensing Technology Center to acquire pressure data; the pressure sensor is connected to the KLM-4514 analog acquisition module through a data line, and then communicates through a 16-channel serial port The interface is connected with the USB interface on the computer;
[0064] The data acquisition module connected to the temperature sensor uses the DAM3000 analog acquisition module of Beijing Altai Technology Development Co., Ltd. to acquire temperature data; the temperature sensor is connected to the DAM3000 analog acquisition module through a data line, and then communicates with the computer through a 16-channel serial communication interface USB interface connection;
[0065] The automatic control module adopts the RM441 remote drive module of Beijing Zhongtai Research and Creation Technology Co., Ltd. to control the opening of the solenoid valve in the fluid production control module; the solenoid valve is connected to the 10-channel switching board through the data line to switch the board and the RM441 module Connected, the output end of the RM441 module is connected to the 16-channel serial communication interface after the 485 to 232 conversion head, and finally connected to the USB interface on the computer;
[0066] The computer saves the collected resistance, pressure, temperature, and flow data, and converts the resistance value into a water saturation value. The result is displayed in a cloud diagram. At the same time, it calculates the real time of each well section based on the flow data collected by the fluid production module. Water content
[0067] The production of the injection-production well is controlled according to a real-time feedback instruction or a predetermined plan; the real-time feedback instruction or a predetermined plan is manually input or obtained from the "reservoir dynamic real-time optimization software" through an interface.
