CN112343572A - Production simulation collection system that carbonate rock reservoir acidizing fracturing was reformed transform - Google Patents
Production simulation collection system that carbonate rock reservoir acidizing fracturing was reformed transform Download PDFInfo
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- CN112343572A CN112343572A CN202011162943.6A CN202011162943A CN112343572A CN 112343572 A CN112343572 A CN 112343572A CN 202011162943 A CN202011162943 A CN 202011162943A CN 112343572 A CN112343572 A CN 112343572A
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- conductive
- acquisition
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- 238000004088 simulation Methods 0.000 title claims abstract description 46
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 38
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 title claims abstract description 27
- 239000011435 rock Substances 0.000 title claims abstract description 12
- 239000008151 electrolyte solution Substances 0.000 claims abstract description 21
- 239000002253 acid Substances 0.000 claims abstract description 17
- 238000012986 modification Methods 0.000 claims abstract description 7
- 230000004048 modification Effects 0.000 claims abstract description 7
- 239000000523 sample Substances 0.000 claims description 19
- 230000005540 biological transmission Effects 0.000 claims description 4
- 239000010430 carbonatite Substances 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 10
- 238000002407 reforming Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 235000019994 cava Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
Abstract
The invention relates to the technical field of production simulation of acidizing, fracturing and reconstruction of carbonate rock reservoirs, and discloses a production simulation and acquisition device for acidizing, fracturing and reconstruction of carbonate rock reservoirs, which comprises an acidizing, fracturing and production simulation device, an insulating box body, a conductive belt, an acquisition circuit and a two-axis moving platform; the acidizing fracturing production simulation device is used for simulating a horizontal well acidizing fracturing fracture hole system, the acidizing fracturing production simulation device is arranged in the insulating box body, electrolyte solution is filled in the insulating box body, the conductive strips are arranged on the inner wall of the insulating box body, the acquisition circuit is electrically connected with the conductive strips, the acquisition end of the acquisition circuit stretches into the electrolyte solution and is used for acquiring simulation data, the two-axis mobile platform is connected with the acquisition end of the acquisition circuit and is used for driving the acquisition end of the acquisition circuit to be in the electrolyte solution. The method fills the blank of physical simulation of the influence of acid fracturing modification on productivity.
Description
Technical Field
The invention relates to the technical field of production simulation of acidizing and fracturing modification of carbonate rock reservoirs, in particular to a production simulation acquisition device for acidizing and fracturing modification of carbonate rock reservoirs.
Background
The buried carbonate rock reservoir is deep in China, most matrixes of deep carbonate rock reservoirs do not have the capacity of storage and seepage, the heterogeneous degree is high, the natural input and output rate is low, and the acid fracturing modification technology becomes the main yield increasing and stabilizing technology of the oil and gas fields. Although the horizontal well can increase the contact area between a shaft and an oil layer, improve the yield of oil gas and the final recovery ratio, the conditions of low permeability, large seepage resistance, poor connectivity, high temperature and the like exist for a deep carbonate reservoir, so that the yield of the single well of the horizontal well is low, and the requirement of economic development cannot be met, so that an acid fracturing production increasing measure needs to be carried out on the horizontal well, and the productivity of the horizontal well is improved. In the acid fracturing production increasing process, through the research on the yield increasing influence parameters of the carbonate reservoir horizontal well, the optimized production increasing measure is selected, so that the purpose of increasing the yield is achieved. When a high-temperature deep carbonate reservoir is modified, the modification technology has great difference due to different specific geology. Therefore, when the carbonate reservoir is reformed, the best reforming scheme is selected, so that the reforming effect can be really achieved, and the reasonability and the scientificity of reforming can be ensured.
The indoor physical simulation technology is one of the important methods for describing the exploitation characteristics of oil and gas reservoirs, and is also one of the most important enhanced oil recovery research means. Meanwhile, a water and electricity simulation experiment device for acidizing, fracturing and reforming of a carbonate reservoir is not available in the prior art.
Disclosure of Invention
The invention aims to overcome the technical defects, provides a production simulation acquisition device for acidizing, fracturing and reforming a carbonate reservoir, and solves the technical problem that the reasonability and the scientificity of reforming cannot be guaranteed when acidizing, fracturing and reforming are carried out in the prior art.
In order to achieve the technical purpose, the technical scheme of the invention provides a production simulation acquisition device for acidizing, fracturing and transforming a carbonate rock reservoir, which comprises an acidizing, fracturing and production simulation device, an insulating box body, a conductive belt, an acquisition circuit and a two-axis moving platform;
the acidizing fracturing production simulation device is used for simulating a horizontal well acidizing fracturing fracture hole system, the acidizing fracturing production simulation device is arranged in the insulating box body, electrolyte solution is filled in the insulating box body, the conductive strips are arranged on the inner wall of the insulating box body, the acquisition circuit is electrically connected with the conductive strips, the acquisition end of the acquisition circuit stretches into the electrolyte solution and is used for acquiring simulation data, the two-axis mobile platform is connected with the acquisition end of the acquisition circuit and is used for driving the acquisition end of the acquisition circuit to be in the electrolyte solution.
Compared with the prior art, the invention has the beneficial effects that: the invention is provided with the acidizing fracturing production simulation device to simulate the acidizing fracturing reconstruction effect, and is also provided with the acquisition circuit for acquiring simulation data, the mobile acquisition end of the two-axis mobile platform moves accurately in the electrolyte solution, so that the automatic continuous acquisition of data is realized, the data acquisition time is short, the data acquisition device can position and acquire data in a high-density and high-accuracy manner, and the blank of a physical simulation device for researching the influence of different matching modes of artificial cracks, natural cracks and karst caves generated by the acidizing fracturing reconstruction of the carbonate reservoir on the productivity is filled.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of a production simulation acquisition device for acid fracturing reformation of a carbonate reservoir provided by the invention;
FIG. 2 is a schematic structural diagram of an embodiment of a two-axis acquisition platform provided by the present invention;
FIG. 3 is a schematic structural diagram of an embodiment of an X-axis sliding unit provided in the present invention;
FIG. 4 is a schematic structural view of an embodiment of a Y-axis sliding unit according to the present invention;
reference numerals:
1. a rectifier; 2. an adjustable resistor; 3. an ammeter; 4. a voltmeter; 5. a probe; 6. a first conductive sheet; 7. a conductive filament; 8. a second conductive sheet; 9. a conductive tape; 10. a conductive hollow sphere; 11. an electrolyte solution; 12. an insulating glass rod; 13. an X-axis sliding unit; 13a, an X-axis slide rail; 13b, an X-axis slide block; 13c, an X-axis screw rod; 13d, an X-axis driving motor; 14. a Y-axis sliding unit; 14a, Y-axis slide rails; 14b, Y-axis slide block; 14c, a Y-axis screw rod; 14d, a Y-axis driving motor; 15. an insulating box body.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
As shown in fig. 1, embodiment 1 of the present invention provides a production simulation acquisition device for acid fracturing reformation of a carbonate reservoir, including an acid fracturing production simulation device, an insulating box body 15, a conductive belt 9, an acquisition circuit, and a two-axis moving platform;
the acidizing fracturing production simulation device is used for simulating a horizontal well acidizing fracturing fracture hole system, the acidizing fracturing production simulation device is arranged in the insulating box body 15, electrolyte solution 11 is contained in the insulating box body 15, the conductive belt 9 is arranged on the inner wall of the insulating box body 15, the acquisition circuit is electrically connected with the conductive belt 9, the acquisition end of the acquisition circuit stretches into the electrolyte solution 11 and is used for acquiring simulation data, the two-axis moving platform is connected with the acquisition end of the acquisition circuit and is used for driving the acquisition end of the acquisition circuit to move in the electrolyte solution 11.
The purpose of this embodiment is to provide a water and electricity simulation automatic acquisition device that carbonate rock reservoir acidizing fracturing was reformed transform to research the problem of the spatial position relation between artifical seam net, natural fracture and the solution cavity that different acidizing fracturing schemes produced influences the recovery ratio of carbonate rock reservoir. Specifically, firstly, an acid fracturing production simulation device is arranged to simulate the spatial position relation among the artificial fracture net, the natural fracture and the karst cave, then the acid fracturing production simulation device is arranged in an insulating box body 15, electrolyte solution 11 is injected into the insulating box body 15, and a conductive belt 9 is attached to the inner wall of the insulating box body 15, so that the acquisition circuit can acquire electric signals. One end of the acquisition circuit is connected with the conductive belt 9, the other end of the acquisition circuit extends into the electrolyte solution 11, and the acquisition circuit is used for detecting voltage data between the two ends, wherein the voltage data reflects the recovery ratio. The two-axis moving platform drives the acquisition end of the acquisition circuit to move in the electrolyte solution 11, so that data acquisition at different positions is automatically realized. The invention fills the blank of a physical simulation device for researching the influence of different position matching modes of artificial cracks, natural cracks and karst caves generated by the acidizing, fracturing and reconstruction of the carbonate reservoir on the productivity.
Preferably, as shown in fig. 1, the acidizing and fracturing production simulation device comprises a conductive wire 7 for simulating a horizontal well shaft, a first conductive sheet 6 for simulating a natural fracture, a second conductive sheet 8 for simulating an artificial fracture and a conductive hollow ball 10 for simulating a karst cave;
the conductive wire 7 is horizontally arranged in the insulating box body 15, the first conductive piece 6 penetrates through the conductive wire 7, the second conductive piece 8 is connected with the first conductive piece 6 according to a preset angle, and the conductive hollow ball 10 is arranged at a position in the insulating box body 15.
Specifically, insulating box 15 is corrosion-resistant plastics no-top water tank that length width height is 200cm x 150cm x 60cm in this embodiment, conducting wire 7 is the copper wire, the copper wire level sets up inside the water tank, first conducting strip 6 and second conducting strip 8 are the copper sheet, first conducting strip 6 sets up perpendicularly and cluster on the copper wire along copper wire length direction, first conducting strip 6 has a plurality ofly, a plurality ofly set up according to certain clearance, second conducting strip 8 welds on first conducting strip 6 according to predetermineeing the angle along 6 thickness directions of first conducting strip, electrically conductive hollow ball 10 is the copper ball, the copper ball sets up in the water tank according to the spatial position relation with between first conducting strip 6, hug closely in the water tank inner wall and set up the conducting band 9 of 30cm high of round, conducting band 9 is the copper strips.
Preferably, as shown in fig. 1, the acquisition circuit comprises a rectifier 1, a voltmeter 4 and a probe 5;
the negative electrode of the rectifier 1 is electrically connected with the conductive belt 9, the positive electrode of the rectifier 1 is electrically connected with the probe 5 through the voltmeter 4, the probe 5 is a collecting end of the collecting circuit, and the two-axis moving platform is connected with the probe 5 and used for driving the probe 5 to move in the electrolyte solution 11.
The acquisition circuit comprises a rectifier 1, a probe 5 and a voltmeter 4, wherein the rectifier 1 is connected in series to form a low-voltage closed loop, the probe 5 is inserted into the electrolyte solution 11, the voltmeter 4 is connected in parallel in the low-voltage closed loop, one end of the voltmeter 4 is connected with the probe 5, the other end of the voltmeter 4 extends into the electrolyte solution 11 through the probe 5, the cathode of the rectifier 1 is connected to a copper strip tightly attached to the inner wall of the water tank, the anode of the rectifier is connected to one end of the copper wire, and the voltmeter 4 is used for acquiring voltage data.
Preferably, as shown in fig. 1, the acquisition circuit further includes an adjustable resistor and an ammeter 3;
one end of the adjustable resistor is electrically connected with the anode of the rectifier 1, and the other end of the adjustable resistor is electrically connected with the conductive wire 7 through the ammeter 3.
In the preferred embodiment, an adjustable resistor and an ammeter 3 are additionally arranged to perform a current limiting adjustment function, the adjustable resistor is used for adjusting the current in the acquisition circuit, the ammeter 3 is used for displaying the current value, and when the current value displayed by the ammeter 3 is within a set range, the adjustment of the adjustable resistor is stopped, so that the electronic devices in the acquisition circuit are prevented from being burnt out due to overlarge current.
Preferably, as shown in fig. 2, the two-axis acquisition platform comprises an X-axis sliding unit 13 and a Y-axis sliding unit 14;
the X-axis sliding unit 13 is arranged on the insulating box body 15, the Y-axis sliding unit 14 is slidably mounted on the X-axis sliding unit 13, the Y-axis sliding unit 14 is perpendicular to the X-axis sliding unit 13, and the acquisition end of the acquisition circuit is slidably connected to the Y-axis sliding unit 14.
The two-axis motion platform is used for driving the probe 5 to move on an XY axis plane, so that automatic data acquisition at different positions is realized.
Preferably, as shown in fig. 2 and 3, the X-axis sliding unit 13 includes an X-axis slide rail 13A, X, an axis slider 13B, X, an axis lead screw 13C, and an X-axis driving motor 13D;
the X-axis slide rail 13A is installed on the insulating box body 15, the X-axis screw 13C is rotatably installed on the X-axis slide rail 13A, the X-axis slide block 13B is sleeved on the X-axis screw 13C, and the X-axis driving motor 13D is in transmission connection with the X-axis screw 13C.
The X-axis sliding unit 13 comprises an X-axis sliding block 13B, X, an axis screw rod 13C, X, an axis sliding rail 13A, X and an axis driving motor 13D, and the X-axis sliding block 13B is connected with the X-axis screw rod 13C in a sliding mode; two ends of the X-axis screw rod 13C are connected to the X-axis slide rail 13A; the X-axis driving motor 13D is used for driving the X-axis screw rod 13C to rotate so as to drive the X-axis slide block 13B to move. Preferably, the Y-axis sliding unit 14 includes a Y-axis slide rail 14A, Y, an axis slider 14B, Y, an axis screw 14C, and a Y-axis driving motor 14D;
preferably, as shown in fig. 2 and 4, the Y-axis slide rail 14A is mounted on the X-axis slide block 13B and is perpendicular to the X-axis slide rail 13A, the Y-axis lead screw 14C is rotatably mounted on the Y-axis slide rail 14A, the Y-axis slide block 14B is sleeved on the Y-axis lead screw 14C, and the Y-axis driving motor 14D is in transmission connection with the Y-axis lead screw 14C.
The Y-axis sliding unit 14 comprises a Y-axis slider 14B, Y, an axis screw rod 14C, Y, an axis slide rail 14A, Y, an axis driving motor 14D, and a Y-axis slider 14B which is connected with a Y-axis screw rod 14C in a sliding manner; two ends of the Y-axis screw rod 14C are connected to the Y-axis slide rail 14A; the Y-axis driving motor 14D is used for driving the Y-axis lead screw 14C to rotate so as to drive the Y-axis slider 14B to move. Specifically, the two-axis acquisition platform in this embodiment includes two synchronous X-axis sliding units 13 and a Y-axis sliding unit 14, where the two X-axis sliding units 13 are respectively fixed on two opposite edges at the mouth of the insulating box body 15; two ends of the Y-axis slide rail 14A are respectively and fixedly connected with the two X-axis slide blocks 13B; the probe 5 is fixedly connected to the Y-axis slider 14B through an insulating glass rod 12.
Preferably, the apparatus further comprises a control terminal, and the X-axis driving motor 13D and the Y-axis driving motor 14D are electrically connected to the control terminal respectively.
The X-axis sliding unit 13 and the Y-axis sliding unit 14 are preferably programmed by a computer so that the probe 5 moves according to a predetermined trajectory, thereby realizing automatic control. Specifically, the moving speed of the sliding block can be 15-50 cm per second, and the data measurement and reservoir device connected with the probe 5 can measure 2000-3000 times per minute, so that rapid high-density data acquisition can be realized, the moving accuracy of the sliding block is improved, and the moving accuracy can reach 0.05 micrometer.
The above-described embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.
Claims (8)
1. A production simulation acquisition device for acidizing and fracturing modification of a carbonate reservoir is characterized by comprising an acidizing and fracturing production simulation device, an insulating box body, a conductive belt, an acquisition circuit and a two-axis moving platform;
the acidizing fracturing production simulation device is used for simulating a horizontal well acidizing fracturing fracture hole system, the acidizing fracturing production simulation device is arranged in the insulating box body, electrolyte solution is filled in the insulating box body, the conductive strips are arranged on the inner wall of the insulating box body, the acquisition circuit is electrically connected with the conductive strips, the acquisition end of the acquisition circuit stretches into the electrolyte solution and is used for acquiring simulation data, the two-axis mobile platform is connected with the acquisition end of the acquisition circuit and is used for driving the acquisition end of the acquisition circuit to be in the electrolyte solution.
2. The production simulation collection device for acid fracturing reformation of a carbonate rock reservoir according to claim 1, characterized in that the acid fracturing production simulation device comprises a conductive wire for simulating a horizontal well shaft, a first conductive sheet for simulating a natural fracture, a second conductive sheet for simulating an artificial fracture and a conductive hollow ball for simulating a karst cave;
the conductive wire is horizontally arranged in the insulating box body, the first conductive piece penetrates through the conductive wire, the second conductive piece is connected with the first conductive piece according to a preset angle, and the conductive hollow ball is arranged at a set position in the insulating box body.
3. The carbonate reservoir acid fracturing reformation production simulation collection device of claim 1, wherein the collection circuit comprises a rectifier, a voltmeter, and a probe;
the negative electrode of the rectifier is electrically connected with the conductive band, the positive electrode of the rectifier is electrically connected with the probe through the voltmeter, the probe is the acquisition end of the acquisition circuit, and the two-axis moving platform is connected with the probe and used for driving the probe to move in the electrolyte solution.
4. The carbonatite reservoir acid fracturing reformation production simulation collection device according to claim 3, wherein the collection circuit further comprises an adjustable resistor and an ammeter;
one end of the adjustable resistor is electrically connected with the anode of the rectifier, and the other end of the adjustable resistor is electrically connected with the conductive wire through the ammeter.
5. The carbonatite reservoir acid fracturing reformation production simulation collection device according to claim 1, wherein the two-axis collection platform comprises an X-axis sliding unit and a Y-axis sliding unit;
the X-axis sliding unit is arranged on the insulating box body, the Y-axis sliding unit is slidably arranged on the X-axis sliding unit, the Y-axis sliding unit and the X-axis sliding unit are vertically arranged, and the acquisition end of the acquisition circuit is slidably connected to the Y-axis sliding unit.
6. The production simulation collection device for acid fracturing reformation of a carbonate reservoir according to claim 5, wherein the X-axis sliding unit comprises an X-axis sliding rail, an X-axis sliding block, an X-axis lead screw and an X-axis driving motor;
the X-axis slide rail is arranged on the insulating box body, the X-axis screw rod is rotatably arranged on the X-axis slide rail, the X-axis slide block is sleeved on the X-axis screw rod, and the X-axis driving motor is in transmission connection with the X-axis screw rod.
7. The production simulation collection device for acid fracturing reformation of a carbonate reservoir according to claim 6, wherein the Y-axis sliding unit comprises a Y-axis sliding rail, a Y-axis sliding block, a Y-axis lead screw and a Y-axis driving motor;
the Y-axis slide rail is installed on the X-axis slide block and is perpendicular to the X-axis slide rail, the Y-axis screw rod is rotatably installed on the Y-axis slide rail, the Y-axis slide block is sleeved on the Y-axis screw rod, and the Y-axis driving motor is in transmission connection with the Y-axis screw rod.
8. The production simulation collection device for acid fracturing reformation of a carbonate reservoir according to claim 7, further comprising a control terminal, wherein the X-axis driving motor and the Y-axis driving motor are electrically connected with the control terminal respectively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011162943.6A CN112343572A (en) | 2020-10-27 | 2020-10-27 | Production simulation collection system that carbonate rock reservoir acidizing fracturing was reformed transform |
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| CN202011162943.6A CN112343572A (en) | 2020-10-27 | 2020-10-27 | Production simulation collection system that carbonate rock reservoir acidizing fracturing was reformed transform |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113884885A (en) * | 2021-10-22 | 2022-01-04 | 傲普(上海)新能源有限公司 | Energy storage battery safety diagnosis system |
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