Intelligent oil well simulation experiment system and working method

An experimental system and intelligent technology, applied in earthwork drilling and production, wellbore/well components, etc., can solve the problems of no intelligent oilfield, etc., and achieve the effect of fast and convenient data collection and processing, simple operation and cost saving

Inactive Publication Date: 2011-04-20
CHINA UNIV OF PETROLEUM (EAST CHINA)
4 Cites 70 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0008] Intelligent oilfield technology has been gradually applied in foreign oilfields, and has achieved certain results in theoretical resear...
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Method used

[0061] The simulated wellbore includes a hollow tube 50, a slot 51 and a diversion hole, the slot 51 is arranged on the hollow tube wall along the axial direction of the hollow tube, and the two ends of the hollow tube 50 are closed ; The diversion hole is in communication with the pipeline 52; a sand filter screen is set around the outside of the simul...
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Abstract

The invention discloses an intelligent oil well simulation experiment system and a experiment method. The intelligent oil well simulation experiment system comprises a three-dimensional heterogenous reservoir simulating box, a wellbore hole simulator, a fluid injecting module, a fluid generating module, a data acquiring module, an automatic control module, a constant temperature module, a saturation probe, a pressure sensor and a temperature sensor. The wellbore hole simulator is arranged in the three-dimensional heterogenous reservoir simulating box, the automatic control modules realizes the real-time extraction and injection on the wellbore hole simulator through controlling the fluid injecting module and the fluid generating module; and the data acquiring module is used for monitoringinjected and extracted fluid, and monitoring the saturation, the temperature and the pressure in the simulating box in real time, and a computer is used for optimizing and analyzing the monitoring data, controlling the injection and extraction flow in real time through the automatic control module, simulating and realizing multilayer comingling production, sectional extraction of a horizontal well, extraction of a multi-branch well and control strategy of an injection and extracting well, and perfecting the researches of real-time optimization, real-time regulation and the like of the production.

Application Domain

Borehole/well accessories

Technology Topic

Traffic volumeAutomatic control +8

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  • Intelligent oil well simulation experiment system and working method
  • Intelligent oil well simulation experiment system and working method
  • Intelligent oil well simulation experiment system and working method

Examples

  • Experimental program(4)

Example Embodiment

[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.

Example Embodiment

[0068] Embodiment 2. The working method of the experimental system as described in embodiment 1:
[0069] 1) Fill the sand 85 in the 3D heterogeneous reservoir simulation box 1. The sand filling position is between the bottom plate 82 and the large piston 86; the simulation wellbore, saturation probe, pressure sensor and temperature sensor are arranged; the large piston is covered 86. Connect the tank top cover 81, inject fluid into the three-dimensional heterogeneous reservoir simulation tank 1 through a manual pump, and compact the sand body in the model;
[0070] 2) Vacuum the 3D heterogeneous reservoir simulation box 1 through the simulated wellbore;
[0071] 3) Run the "intelligent oilfield data acquisition and control system" software installed in the computer 22, turn on the data acquisition module, and monitor the change of resistance value during the process of saturated water and oil;
[0072] 4) Record the volume of water used for saturation by simulating saturated water in the wellbore;
[0073] 5) Record the volume of medium oil used for saturation by simulating the wellbore saturated medium oil;
[0074] 6) Push the three-dimensional heterogeneous reservoir simulation box 1 into the thermostat, adjust the temperature of the thermostat to the temperature required by the experiment, and then let it stand for 24 to 48 hours;
[0075] 7) Turn on the automatic control module in the "Intelligent Oilfield Data Acquisition and Control System" software; the fluid injection module injects displacement fluid into the injection simulated wellbore 14, 15, and 16, and the fluid production module collects and produces output from the simulated wellbore 11, 12, and 13. Fluid
[0076] 8) The computer 22 monitors and records the distribution data of saturation, pressure and temperature in the three-dimensional heterogeneous reservoir simulation box 1 in real time, the pressure and flow rate at the injection/production outlet of each simulated wellbore, and the water content of each production well section, according to The flow field distribution inside the reservoir and/or the water cut monitoring results of the production well section, or the optimized production plan provided by the "reservoir dynamic real-time optimization software", use the software in the computer to control the working parameters of each injection and production well section in real time and automatically.
[0077] The displacement fluid mentioned in step 7) is water, and the produced fluid is a mixture of oil and water;

Example Embodiment

[0078] The working method of Embodiment 3 is the same as that of Embodiment 2, the difference is:
[0079] The displacement fluid described in step 7) is gas, and the produced fluid is a mixture of oil, gas, and water.

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Description & Claims & Application Information

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