CN209780859U - Low-permeability conglomerate oil reservoir fracturing horizontal well productivity simulation model - Google Patents
Low-permeability conglomerate oil reservoir fracturing horizontal well productivity simulation model Download PDFInfo
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- CN209780859U CN209780859U CN201921445867.2U CN201921445867U CN209780859U CN 209780859 U CN209780859 U CN 209780859U CN 201921445867 U CN201921445867 U CN 201921445867U CN 209780859 U CN209780859 U CN 209780859U
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Abstract
The utility model discloses a hyposmosis glutenite oil reservoir fracturing horizontal well productivity simulation model, this experimental apparatus is including displacement module, simulation module, output module, the sand filling box of this device packs the quartz sand of different granularity levels in order to simulate glutenite oil reservoir stratum, buries the fracturing horizontal well model underground in the quartz sand, this fracturing horizontal well model comprises the person in charge and a plurality of horizontal branch pipe including vertical section, horizontal segment, this horizontal well model below has buried a plurality of pressure measurement probes underground, the bottom of filling the sand box is provided with a plurality of filling holes, can simulate the productivity of different supply conditions, the utility model discloses in be provided with heater and constant temperature water bath case and can simulate high temperature stratum condition, the cooler that sets up can prevent to simulate a large amount of volatilization of oil high temperature and influence experimental result; the inclination angle of the simulation module can be changed through the supporting structure, and the productivity under different stratum inclination angles can be simulated.
Description
Technical Field
The utility model relates to an oil reservoir research technical field specifically is a hyposmosis glutenite oil reservoir fracturing horizontal well productivity simulation model.
background
The productivity research of oil wells and gas wells mainly provides a basis for geological design and production, has important significance for oil and gas field development, and has complex factors influencing the productivity of the oil wells and the gas wells, such as heterogeneity of reservoirs and crack development conditions. The oil layer of the low-permeability conglomerate oil reservoir has low porosity, low permeability and high development difficulty, and the fracturing horizontal well is used as a means for effectively improving the oil reservoir development speed, has the characteristics of large oil discharge area, small production pressure difference, high yield and the like, and is favorable for improving the recovery ratio of the low-permeability conglomerate oil reservoir oil.
Most of the existing low-permeability conglomerate reservoir oil horizontal well productivity models are single in function, small in applicability and large in limitation, such as the Chinese application utility model CN201820871459.2, the model discloses a model for qualitatively simulating horizontal well productivity influence factors, the rock core is placed on a rock core heating support net of an experimental cylinder, gas generated by heating the rock core is sucked into a gas chromatograph by an air pump, the gas chromatograph analyzes the oil and gas properties and quality contained in the rock core, but the distillation range of the actual formation crude oil is long, especially for heavy oil with more heavy fractions, the dry point of the heavy oil is high, extremely high evaporation temperature is needed and coking is easy, in addition, the device is short of a temperature control facility and cannot simulate the high temperature condition of the actual formation condition, and therefore the model is narrow in application object.
Disclosure of Invention
The utility model aims at providing a hyposmosis glutenite oil reservoir fracturing horizontal well productivity simulation model for research hyposmosis glutenite oil reservoir seepage flow law and productivity.
a low-permeability glutenite reservoir fractured horizontal well productivity simulation model comprises a displacement module, a simulation module and an output module.
The displacement module comprises a displacement pump, a piston container, a flowmeter and a heater which are sequentially connected, simulated oil is filled in the piston container, the displacement pump drives the simulated oil in the piston container by taking water as a medium, the simulated oil is prevented from being polluted, and the heater is used for heating the simulated oil and is matched with a constant-temperature water bath to simulate the high-temperature condition of the stratum.
the simulation module comprises a sand filling box, a constant temperature water bath box and a support structure, wherein the sand filling box is positioned in the constant temperature water bath box, and the constant temperature water bath box is positioned on the support structure; the top of the sand filling box is movably connected with an upper gland, the bottom of the sand filling box is provided with a plurality of injection holes, the outlet of the heater is respectively connected with each injection hole, and a valve is arranged on a connecting pipeline; filling quartz sand with different granularity levels in a sand filling box to simulate a conglomerate oil reservoir stratum, compacting and sealing the quartz sand through an upper gland, and burying a fractured horizontal well model in the quartz sand; the fracturing horizontal well model comprises a main pipe and a plurality of horizontal branch pipes, wherein the main pipe consists of a vertical section and a horizontal section which are communicated, one end of the vertical section penetrates through an upper gland and is in sealing connection with the upper gland, one end of the horizontal section is closed, one end of each horizontal branch pipe is closed, the other end of each horizontal branch pipe is communicated with the horizontal section, a plurality of small holes are formed in each horizontal branch pipe and used for simulating fracturing cracks, and a layer of sand prevention filter screen is wrapped outside each horizontal branch pipe to prevent quartz sand from blocking the small holes; a plurality of pressure measuring probes are buried below the fractured horizontal well model and used for monitoring simulated formation pressure, and the pressure measuring probes are electrically connected with the pressure sensors of the sand filling boxes.
the output module comprises an electronic balance, a back pressure valve, a cooler and an oil measuring cylinder which are sequentially connected, the electronic balance is arranged below the oil measuring cylinder, and an inlet of the back pressure valve is connected with the vertical section.
The device also comprises a computer, wherein the flowmeter and the pressure sensor are electrically connected with the computer and used for transmitting and recording data.
Preferably, four corners of the upper gland are respectively provided with a hydraulic cylinder, and the hydraulic cylinders are connected with a hand pump and used for compressing quartz sand and sealing the upper gland.
Preferably, the back pressure valve is also connected with a hand pump for controlling the back pressure.
Preferably, the supporting structure comprises a bottom plate, a lifting mechanism and a top plate, wherein the bottom of the lifting mechanism is fixed on the bottom plate, and the top of the lifting mechanism is hinged to the bottom of the top plate.
The utility model has the advantages that:
The utility model provides a hyposmosis conglomerate oil reservoir fracturing horizontal well productivity simulation model for studying hyposmosis conglomerate oil reservoir seepage law and productivity, the utility model is provided with a heater and a constant temperature water bath box which can simulate high temperature stratum conditions, and the cooler can prevent a large amount of volatilization of simulated oil at high temperature from influencing experimental results; the inclination angle of the simulation module can be changed through the supporting structure, and the productivity under different stratum inclination angles can be simulated; the utility model discloses still be provided with a plurality of filling holes and pressure monitored control system, can simulate the productivity under the different supply conditions, provide the theoretical foundation for optimal design.
Drawings
FIG. 1 is a general schematic view of the present invention;
FIG. 2 is a diagram of an injection hole distribution
FIG. 3 is a pressure probe profile;
FIG. 4 is a schematic view of a fractured horizontal well model;
FIG. 5 is a schematic view of a support structure
The respective symbols in the figure are as follows: 11. a displacement pump; 12. a piston reservoir; 13. a flow meter; 14. a heater; 15. a valve; 21. filling a sand box; 22. a constant temperature water bath tank; 23. a support structure; 24. Fracturing the horizontal well model; 25. a pressure measuring probe; 26. a hydraulic cylinder; 31. an electronic balance; 32. A back pressure valve; 33. a cooler; 34. an oil measuring cylinder; 4. a computer;
211. A gland is arranged; 212. an injection hole; 231. a base plate; 232. a lifting mechanism; 233. a top plate; 241 main pipe; 242. a horizontal branch pipe; 251. a pressure sensor; 261. a hand pump;
2411. A vertical section; 2412. a horizontal segment.
Detailed Description
The present invention will be further described with reference to the accompanying drawings, but the present invention can be applied to, but not limited to, the following embodiments.
A low-permeability glutenite reservoir fractured horizontal well productivity simulation model comprises a displacement module, a simulation module and an output module.
The displacement module comprises a displacement pump 11, a piston container 12, a flow meter 13 and a heater 14 which are sequentially connected, simulated oil is filled in the piston container 12, and the displacement pump 11 drives the simulated oil in the piston container 12 by taking water as a medium, so that the simulated oil is prevented from being polluted.
The simulation module comprises a sand filling box 21, a constant temperature water bath box 22 and a support structure 23, wherein the sand filling box 21 is positioned in the constant temperature water bath box 22, and the constant temperature water bath box 22 is positioned on the support structure 23; the bottom of the sand filling box 21 is provided with 5 filling holes 212, the filling holes 212 are distributed as shown in figure 2, the outlets of the heaters 14 are respectively connected with each filling hole 212, and the connecting pipeline is provided with a valve 15; quartz sand with different granularity levels is filled in the sand filling box 21 to simulate a conglomerate reservoir stratum, the top of the sand filling box 21 is movably connected with an upper gland 211, four corners of the upper gland 211 are respectively provided with a hydraulic cylinder 26, and the hydraulic cylinders 26 are connected with a hand pump 261 and used for compacting the quartz sand and sealing the upper gland 211; a fractured horizontal well model 24 is buried in quartz sand, the fractured horizontal well model 24 comprises a main pipe 241 and 10 horizontal branch pipes 242, the main pipe 241 comprises a vertical section 2411 and a horizontal section 2412 which are communicated, one end of the vertical section 2411 penetrates through the upper gland 211 and is hermetically connected with the upper cover plate 211, one end of the horizontal section 2412 is closed, one end of the horizontal branch pipe 242 is communicated with the horizontal section 2412, the other end of the horizontal branch pipe is also closed, a plurality of small holes are formed in the horizontal branch pipe 242, and a layer of sand-proof filter screen is wrapped outside the horizontal branch pipe 242 to prevent the small holes from being blocked by the quartz sand; 15 pressure probes 25 are embedded below the fractured horizontal well model 24, the distribution of the pressure probes 25 is shown in figure 3, and the pressure probes 25 are electrically connected with a pressure sensor 251 of the sand filling box.
The output module includes electronic balance 31 and the back pressure valve 32, cooler 33, the graduated flask 34 that connect gradually, and graduated flask 34 below is provided with electronic balance 31, and back pressure valve 32 also is connected with hand pump 261 for control back pressure, back pressure valve 32's entry and vertical section 2411 are connected.
The device also comprises a computer 4, wherein the flowmeter 13 and the pressure sensor 251 are electrically connected with the computer 4 and used for transmitting and recording data.
the structure of the supporting structure 23 is as shown in fig. 5, and the supporting structure comprises a bottom plate 231, a lifting mechanism 232 and a top plate 233, wherein the bottom of the lifting mechanism 232 is fixed on the bottom plate 231, the top of the lifting mechanism 232 is hinged to the bottom of the top plate 233, the lifting mechanism 232 is provided with three lifting devices which are not on the same water line, and the inclination angle of the top plate can be adjusted by adjusting the heights of the three lifting devices.
the above description is not intended to limit the present invention in any way, and although the present invention has been disclosed in terms of the preferred embodiment, it is not intended to limit the present invention, and any person skilled in the art will be able to make modifications or changes to equivalent embodiments without departing from the scope of the present invention.
Claims (3)
1. A low-permeability conglomerate oil reservoir fractured horizontal well productivity simulation model is characterized by comprising a displacement module, a simulation module and an output module;
The displacement module comprises a displacement pump, a piston container, a flowmeter and a heater which are sequentially connected, and simulation oil is filled in the piston container;
The simulation module comprises a sand filling box, a constant temperature water bath box and a support structure, wherein the sand filling box is positioned in the constant temperature water bath box, and the constant temperature water bath box is positioned on the support structure; the top of the sand filling box is movably connected with an upper gland, the bottom of the sand filling box is provided with a plurality of injection holes, the outlet of the heater is respectively connected with each injection hole, and a valve is arranged on a connecting pipeline; filling quartz sand with different granularity levels in the sand filling box to simulate a glutenite reservoir stratum, and burying a fracturing horizontal well model in the quartz sand, wherein the fracturing horizontal well model comprises a main pipe and a plurality of horizontal branch pipes; the main pipe is formed by communicating a vertical section and a horizontal section, one end of the vertical section penetrates through the upper gland and is in sealing connection with the upper gland, and one end of the horizontal section is closed; one end of the horizontal branch pipe is closed, the other end of the horizontal branch pipe is communicated with the horizontal section, a plurality of small holes are formed in the horizontal branch pipe and used for simulating fracturing cracks, and a layer of sand prevention filter screen is wrapped outside the horizontal branch pipe; a plurality of pressure measuring probes are embedded below the fractured horizontal well model and are electrically connected with pressure sensors outside the sand filling boxes;
the output module comprises an electronic balance, a back pressure valve, a cooler and an oil measuring cylinder which are sequentially connected, wherein the electronic balance is arranged below the oil measuring cylinder, and an inlet of the back pressure valve is communicated with the vertical section;
The device also comprises a computer, wherein the flowmeter and the pressure sensor are electrically connected with the computer.
2. The low-permeability conglomerate reservoir fractured horizontal well productivity simulation model according to claim 1, wherein a hydraulic cylinder is arranged at each of four corners of the upper gland and connected with a hand-operated pump.
3. The low-permeability glutenite reservoir fractured horizontal well productivity simulation model according to claim 1, wherein the supporting structure comprises a bottom plate, a lifting mechanism and a top plate, the bottom of the lifting mechanism is fixed on the bottom plate, and the top of the lifting mechanism is hinged to the bottom of the top plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921445867.2U CN209780859U (en) | 2019-09-02 | 2019-09-02 | Low-permeability conglomerate oil reservoir fracturing horizontal well productivity simulation model |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921445867.2U CN209780859U (en) | 2019-09-02 | 2019-09-02 | Low-permeability conglomerate oil reservoir fracturing horizontal well productivity simulation model |
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| CN209780859U true CN209780859U (en) | 2019-12-13 |
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| CN201921445867.2U Expired - Fee Related CN209780859U (en) | 2019-09-02 | 2019-09-02 | Low-permeability conglomerate oil reservoir fracturing horizontal well productivity simulation model |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111155990A (en) * | 2020-02-12 | 2020-05-15 | 西南石油大学 | Experimental device for evaluating influence of interlayer and injection-production point on recovery ratio of thick-layer oil reservoir |
| CN113513313A (en) * | 2021-04-28 | 2021-10-19 | 中煤科工集团重庆研究院有限公司 | Experimental device and method for simulating coal seam hydraulic fracturing |
-
2019
- 2019-09-02 CN CN201921445867.2U patent/CN209780859U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111155990A (en) * | 2020-02-12 | 2020-05-15 | 西南石油大学 | Experimental device for evaluating influence of interlayer and injection-production point on recovery ratio of thick-layer oil reservoir |
| CN113513313A (en) * | 2021-04-28 | 2021-10-19 | 中煤科工集团重庆研究院有限公司 | Experimental device and method for simulating coal seam hydraulic fracturing |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20191213 Termination date: 20200902 |