CN113494261B - Temporary plugging agent perforation hole plugging pressure-bearing experimental device for acidizing and fracturing - Google Patents
Temporary plugging agent perforation hole plugging pressure-bearing experimental device for acidizing and fracturing Download PDFInfo
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- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention provides a plugging pressure-bearing experimental device for plugging agent perforation holes for acidizing and fracturing, which comprises a pressurizing pump, a first container, a second container and a perforation die; the first container is internally provided with a movable baffle, the movable baffle divides the first container into a first chamber and a second chamber which are independent, the pressurizing pump is communicated with the first chamber, the second container is communicated with the second chamber, the second chamber is used for containing temporary plugging agent, when the pressurizing pump pressurizes the first chamber, the side wall of the second container is provided with a plurality of simulated holes which can be plugged, a liquid channel is arranged in the hole mould, the liquid channel is communicated with any simulated hole, and the rest simulated holes are plugged. The plugging agent perforation plugging pressure-bearing experimental device provided by the invention can simulate the temporary plugging agent plugging pressure-bearing capacity in perforation.
Description
Technical Field
The invention relates to the technical field of oil and gas exploration and development, in particular to a temporary plugging agent perforation hole plugging pressure-bearing experimental device for acidizing and fracturing.
Background
Along with the development of oil and gas exploration and development technology towards deep layers, a large number of oil and gas reservoirs have the characteristics of deep reservoir burial, high temperature and high pressure, large thickness of reservoirs (namely, huge thickness) and compact matrixes, belong to typical unconventional oil and gas reservoirs, have generally lower single-well natural yield, and need reservoir reconstruction measures. At present, in the transformation of deep giant thick reservoirs, the reservoir transformation is further carried out by using a temporary plugging agent for acid fracturing on the basis of artificial perforation, wherein the temporary plugging agent is a substance capable of temporarily reducing the permeability of a stratum or temporarily plugging a high-permeability oil layer. After mixing with water-soluble polymer, the said polymer is injected into well to form thin and compact temporary oil layer blocking band under the action of pressure difference. A plurality of holes at different heights are arranged around the existing oil-gas well, and part of holes are blocked by temporary blocking agents, so that liquid is prevented from flowing in part of holes. An important index of whether reservoir reformation is successful is the plugging bearing capacity of the temporary plugging agent.
However, the plugging bearing capacity of the temporary plugging agent in the perforation under the real condition cannot be dynamically simulated under the existing condition, the plugging bearing capacity of the temporary plugging agent cannot be truly estimated, and a plurality of uncontrollable factors are added in the actual production process.
Disclosure of Invention
The invention provides a temporary plugging agent perforation plugging pressure-bearing experimental device for acidizing and fracturing, which can simulate the temporary plugging agent plugging pressure-bearing capacity in perforation.
The invention provides a temporary plugging agent perforation plugging pressure-bearing experimental device for acidizing and fracturing, which is used for detecting the plugging pressure-bearing capacity of the temporary plugging agent and comprises a booster pump, a first container, a second container and a perforation die;
the first container is internally provided with a movable baffle, the movable baffle divides the first container into a first independent chamber and a second independent chamber, the first chamber is used for containing fluid, the second chamber is used for containing fracturing base fluid, the pressurizing pump is communicated with the first chamber, the second container is communicated with the second chamber, the second chamber is used for containing temporary plugging agent, and when the pressurizing pump pressurizes the first chamber, the fluid pushes the movable baffle to move so as to push the fracturing base fluid into the second container;
the side wall of the second container is provided with a plurality of simulated holes which can be plugged, a liquid channel is arranged in the hole die, the liquid channel is communicated with any simulated hole, and the rest simulated holes are plugged.
Optionally, the temporary plugging agent perforation plugging pressure-bearing experimental device for acidizing and fracturing provided by the invention has the advantages that the second container is vertically placed, and the communication part of the second container and the second cavity is positioned at the top of the second container.
Optionally, the temporary plugging agent perforation hole plugging pressure-bearing experimental device for acidizing and fracturing provided by the invention has the advantages that the distances between each simulated perforation hole and the bottom of the second container are different, each simulated perforation hole is provided with a detachable cap, and the caps are used for plugging the simulated perforation holes.
Optionally, the temporary plugging agent perforation plugging pressure-bearing experimental device for acidizing and fracturing provided by the invention has the advantages that the liquid channel is conical, and the large-diameter end of the liquid channel is communicated with the second container.
Optionally, the temporary plugging agent perforation plugging pressure-bearing experimental device for acidizing and fracturing provided by the invention has the advantages that the included angle between the axis of the liquid channel and the axis of the second container is 30-90 degrees.
Optionally, the temporary plugging agent perforation hole plugging pressure-bearing experimental device for acidizing and fracturing provided by the invention is characterized in that the second chamber is provided with a liquid filling port.
Optionally, the temporary plugging agent perforation plugging pressure-bearing experimental device for acidizing and fracturing further comprises a pressure detection piece, wherein the pressure detection piece is connected with the second chamber and is used for detecting the pressure of the second chamber.
Optionally, the temporary plugging agent perforation hole plugging pressure-bearing experimental device for acidizing and fracturing further comprises a temperature-adjustable incubator, and the second container and the perforation die are positioned in the incubator.
Optionally, the temporary plugging agent perforation plugging pressure-bearing experimental device for acidizing and fracturing further comprises a stirring assembly, wherein the stirring assembly is connected with the second container, and the stirring end of the stirring assembly stretches into the second container.
Optionally, the temporary plugging agent perforation plugging pressure-bearing experimental device for acidizing and fracturing further comprises a third container and a weighing piece for weighing the third container;
and the third container is provided with a vent, and the third container is communicated with the small-diameter end of the liquid channel.
According to the temporary plugging agent perforation plugging pressure-bearing experimental device for acidizing and fracturing, an oil-gas well is simulated through the second container, the side wall of the second container simulates a well wall, the simulated perforation and the perforation mould simulate perforation holes on the oil-gas well wall, the pressurizing pump and the first container simulate a device for pressurizing the oil-gas well in production, the pressurizing pump and the first container pressurize the second container, the pressurizing state of the temporary plugging agent in the real environment when the perforation holes are plugged is simulated, meanwhile, in the pressurizing process, fluid pushes the movable baffle to push the fracturing base fluid into the second container to form a mixture, and the maximum pressure which can be borne when the mixture of the fracturing base fluid and the temporary plugging agent in the real oil-gas well passes through the temporary plugging agent to plug the perforation holes is simulated. And the pressure bearing capacity of temporary plugging agent plugging is evaluated, and the result of the evaluation is utilized to guide the subsequent pressure acidification work.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.
Fig. 1 is a schematic structural diagram of a temporary plugging agent perforation plugging pressure-bearing experimental device for acidizing and fracturing according to an embodiment of the invention;
fig. 2 is a schematic structural diagram of a second container and an eyelet mold in an experimental device for plugging and bearing perforation holes with temporary plugging agent for acidizing and fracturing according to an embodiment of the invention;
fig. 3 is a view of a simulated hole of a second container in a temporary plugging agent perforation hole plugging pressure-bearing experimental device for acidizing and fracturing according to an embodiment of the invention;
fig. 4 is a schematic diagram of a cap and a chute in a temporary plugging agent perforation plugging pressure-bearing experimental device for acidizing and fracturing according to an embodiment of the invention;
fig. 5 is a schematic structural diagram of a temporary plugging agent perforation plugging pressure-bearing experimental device for acidizing and fracturing according to a second embodiment of the present invention;
fig. 6 is a schematic diagram of a first container structure in a temporary plugging agent perforation plugging pressure-bearing experimental device for acidizing and fracturing according to a second embodiment of the present invention;
fig. 7 is a schematic structural diagram of a temporary plugging agent perforation plugging pressure-bearing experimental device for acidizing and fracturing according to the third embodiment of the invention;
fig. 8 is a schematic structural diagram of a temporary plugging agent perforation plugging pressure-bearing experimental device for acidizing and fracturing provided by the fourth embodiment of the invention;
fig. 9 is a schematic structural diagram of a temporary plugging agent perforation plugging pressure-bearing experimental device for acidizing and fracturing provided by the fifth embodiment of the invention.
Reference numerals illustrate:
1-a booster pump;
2-a first container;
21-moving the baffle;
22-a first chamber;
23-a second chamber;
24-a liquid adding port;
25-cover;
26-scale;
3-a pressure detecting member;
4-a second container;
41-simulating an eyelet;
42-cap;
43-sliding groove;
44-threaded holes;
5-a stirring assembly;
51-a motor;
52-connecting rods;
53-leaf;
6-eyelet die;
61-liquid channel;
7-opening and closing a valve;
8-a constant temperature box;
9-a third container;
10-weighing piece.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The experimental device for plugging and bearing pressure of temporary plugging agent perforation holes for acidizing and fracturing is used for simulating an underground environment, an oil-gas well is simulated through the second container 4, the side wall of the second container 4 is simulated to be a well wall, the simulated perforation 41 and the perforation die 6 are used for simulating perforation holes on the oil-gas well wall, the pressurizing pump 1 and the first container 2 are used for pressurizing the second container 4 together to simulate the pressurizing state of the temporary plugging agent perforation holes in the real environment, and the experimental device for plugging and bearing pressure of the temporary plugging agent perforation holes for acidizing and fracturing can dynamically simulate the plugging and bearing capacity of the temporary plugging agent perforation holes in the real environment and evaluate the plugging and bearing capacity of the temporary plugging agent perforation holes in real environment.
Example 1
Fig. 1 is a schematic structural diagram of a temporary plugging agent perforation plugging pressure-bearing experimental device for acidizing and fracturing according to an embodiment of the invention; fig. 2 is a schematic structural diagram of a second container and an eyelet mold in an experimental device for plugging and bearing perforation holes with temporary plugging agent for acidizing and fracturing according to an embodiment of the invention. As shown in fig. 1 and fig. 2, the embodiment provides a temporary plugging agent perforation hole plugging pressure-bearing experimental device for acidizing and fracturing, which is used for detecting the plugging pressure-bearing capacity of the temporary plugging agent and comprises a pressure pump 1, a first container 2, a second container 4 and a perforation die 6;
the first container 2 is provided with a movable baffle 21, the movable baffle 21 is slidably connected with the inner wall of the first container 2, the movable baffle 21 divides the first container 2 into a first chamber 22 and a second chamber 23 which are independent, the first chamber 22 is used for containing fluid, and the second chamber 23 is used for containing fracturing base fluid, wherein the first container 2 is a pressure container which is provided with a sealable chamber, the first container 2 can be a cylindrical container, a cuboid container or the like, and the structure of the first container 2 is not limited, as long as the structure is divided into two chambers by the movable baffle 21, and the movable baffle 21 can slide in the first container 2.
Optionally, the side wall of the first container 2 is made of transparent material, meanwhile, the side wall of the first container 2 is provided with a scale 26, the scale 26 can accurately display the position of the movable baffle 21, an operator can calculate the volumes of the first chamber 22 and the second chamber 23 through the numerical value of the scale 26, and then the volume of the fracturing base fluid entering the second container 4 from the second chamber 23 can be controlled, and the mixture of the fracturing base fluid and the temporary plugging agent with different proportions can be obtained in the second container 4.
Further, the first container 2 may be placed in various manners, for example, the first container 2 is placed vertically, the second chamber 23 is located above the first chamber 22, where the fluid contained in the first chamber 22 is used as a pressure transmission medium, for example, the fluid may be water, a cooling liquid, oil, etc., which is not limited herein, as long as the fluid may meet the transmission pressure, or the first chamber 22 contains a gas, and the moving baffle 21 is pushed to displace by the gas transmission pressure, which is not limited herein. When the first chamber 22 contains fluid, the power is large and the movement is stable, and when the first chamber 22 contains gas, the resistance is small and the speed is high in the transmission process, and the specific type of medium contained in the first chamber 22 is determined according to the actual requirement, so that the embodiment is not limited.
The pressure pump 1 is in communication with the first chamber 22, and the pressure pump 1 is used as a pressure source of the experimental device to provide pressure for the experimental device, preferably, a pressure-adjustable pressure pump 1 such as an adjustable plunger pump is used, and the type of the pressure pump 1 is not limited herein, so long as the pressure pump 1 can pressurize the first container 2 and the second container 4.
The pressurizing pump 1 and the first chamber 22 may be connected through a pipe having pressure resistance, and the connection portion needs sealing treatment. The second container 4 is communicated with the second chamber 23, wherein the second container 4 and the second chamber 23 can be connected through a pipeline with pressure resistance, and the connection part needs sealing treatment. The second container 23 is used for containing temporary plugging agent, the temporary plugging agent is a filiform solid, when the pressurizing pump 1 pressurizes the first chamber 22, the fluid pushes the movable baffle 21 to move so as to push the fracturing base fluid into the second container 4, and at the moment, the fracturing base fluid is mixed with the temporary plugging agent in the second container 4;
the side wall of the second container 4 is provided with a plurality of closable dummy holes 41, the hole mold 6 is provided with a liquid channel 61, the liquid channel 61 is communicated with any dummy hole 41, specifically, the hole mold 6 is detachably connected with the side wall of the second container 4, for example, the hole mold 6 is in threaded connection with the second container 4, and the specific connection mode of the hole mold 6 and the second container 4 is not limited herein, so long as the connection mode is stable and detachable, and one end of the hole mold 6 is opposite to the dummy hole 41 after connection so that the liquid channel 61 is communicated with the dummy hole 41. The remaining dummy apertures 41 are plugged. At this point, the mixture of fracturing base fluid and temporary plugging agent may pass through the simulated perforation 41 into the fluid passage 61 in the perforation die 6.
In this embodiment, the second container 4 simulates an oil-gas well, the side wall of the second container 4 simulates a well wall, the simulation hole 41 on the side wall of the second container 4 and the hole die 6 simulate a perforation hole on the oil-gas well wall, the pressurizing pump 1 pressurizes the liquid in the first container 2 into the second container 4, the fracturing base liquid and the temporary plugging agent are mixed to form a mixture in the second container 4, the pressurizing state of the temporary plugging agent when the perforation is plugged is simulated, and the plugging pressure bearing capacity of the temporary plugging agent in the perforation hole can be evaluated.
Further, the second container 4 is vertically placed for simulating a vertical hydrocarbon well in a real environment, and the place where the second container 4 communicates with the second chamber 23 is located at the top of the second container 4. The condition that the oil and gas well is subjected to pressure in the exploitation process, namely the condition that the pressure is applied from top to bottom, is met, the second container 4 of the temporary plugging agent perforation plugging pressure-bearing experimental device for acidizing and fracturing is more attached to the use state of the oil and gas well, and experimental errors caused by different pressure directions are avoided. Wherein the second container 4 is connected with the second chamber 23 through a pipeline with pressure resistance, and the connection part needs sealing treatment.
Further, as shown in fig. 2, the distances between each of the simulation holes 41 and the bottom of the second container 4 are different, wherein the height difference between the simulation holes 41 with adjacent heights is the same, the simulation holes 41 are used together with the holes to simulate perforation holes uniformly arranged in an oil and gas well, alternatively, each of the simulation holes 41 is arranged in a vertical line on the side wall of the second container 4 and is used together with the hole mold 6 to simulate perforation holes with different heights in the oil and gas well on the same vertical line, or each of the simulation holes 41 is uniformly arranged on 360 ° on the side wall of the second container 4 and is used together with the hole mold 6 to simulate perforation holes with different positions in the oil and gas well. The number of dummy apertures 41 and the location of the dummy apertures 41 on the side wall of the second container 4 may be determined according to experimental requirements.
Each dummy eyelet 41 is provided with a removable cap 42, and the cap 42 may be connected to the second container 4 by a removable connection such as a threaded connection or a keyed connection, which is not limited in this embodiment. The cap 42 is used to close off the dummy eyelet 41. When it is desired to connect the second container 4 to the eyelet mold 6, the cap 42 of the dummy eyelet 41 at the connection with the eyelet mold 6 is removed and the eyelet mold 6 is connected to the second container 4, at which point the dummy eyelet 41 communicates with the eyelet mold 6.
Fig. 3 is a front view of a second container in the temporary plugging agent perforation plugging pressure-bearing experimental device for acidizing and fracturing provided by the embodiment of the invention, fig. 4 is a schematic view of a structure of a cap and a chute in the temporary plugging agent perforation plugging pressure-bearing experimental device for acidizing and fracturing provided by the embodiment of the invention, as shown in fig. 3, optionally, a cap 42 is connected with the second container 4 through a chute 43, specifically, the chute 43 is fixedly connected with a side wall of the second container 4, two sides of the cap 42 can slide in the chute 43, when the simulated perforation 41 is required to be communicated with a liquid channel 61 of the perforation mold 6, the cap 42 is moved upwards along the chute 43 to expose the simulated perforation 41, the perforation mold 6 is connected with the second container 4 at the simulated perforation 41, for example, as shown in fig. 4, a threaded hole 44 is additionally provided at two sides of the chute 43, a screw can be screwed into the threaded hole 44, the screw can abut against the cap 42, and the cap 42 can be fixed in a specific fixing mode of the cap 42, when the cap 42 is not limited to be fixed in a sliding position.
Through set up a plurality of simulation holes 41 that are different from bottom distance on second container 4 lateral wall, hole mould 6 is connected with one of them simulation hole 41, and other simulation holes 41 use the block 42 shutoff, can simulate the shutoff effect of temporary plugging agent in the perforation hole of oil gas well different high position, because temporary plugging agent and fracturing base fluid are not necessarily even in the distribution of second container 4, so set up the simulation hole 41 of different high from the bottom, can make the experimental result more comprehensive.
Further, the liquid passage 61 is conical, and the large diameter end of the liquid passage 61 communicates with the second container 4. When the second container 4 is pressurized, the mixture of the temporary plugging agent and the fracturing base fluid in the second container 4 enters the liquid channel 61 through the simulation holes 41, and flows from the large diameter end to the small diameter end of the liquid channel 61.
Because the temporary plugging agent is a filiform solid, when the plugging condition of the temporary plugging agent is good, the temporary plugging agent can be gathered at the small-diameter end of the liquid channel 61 to block the small-diameter end of the liquid channel 61, so that the mixture of the temporary plugging agent and the fracturing base fluid is prevented from flowing out of the small-diameter end, and when the plugging condition of the temporary plugging agent is poor, the temporary plugging agent cannot be gathered at the small-diameter end of the liquid channel 61, and the mixture of the temporary plugging agent and the fracturing base fluid is prevented from flowing out of the small-diameter end.
Specifically, in order to make the liquid channel 61 of the perforating die closer to the structure of the perforation on the oil-gas well wall, the diameter of the large diameter end may be set to 10mm, and the diameter of the small diameter end may be set to 5mm. The specific sizes of the diameters of the large diameter end and the small diameter end are not limited in this embodiment, and are determined according to practical situations.
Further, the angle between the axis of the liquid passage 61 and the axis of the second container 4 is in the range of 30 ° to 90 °. Specifically, when the angle between the axis of the liquid channel 61 and the axis of the second container 4 is 90 °, the liquid channel 61 is perpendicular to the side wall of the second container 4, which is the most ideal situation of perforation holes, but in the actual oil and gas well, the perforation holes are inclined with the oil and gas well wall, in order to simulate the situation that the perforation holes are inclined with the oil and gas well wall, a certain angle range is set between the axis of the liquid channel 61 and the axis of the second container 4, so as to simulate the situation that the perforation holes in the actual environment are perpendicular to the oil and gas well wall together with the simulated perforation holes 41 on the side wall of the second container 4, when the angle range is set to 30 ° to 90 °, all the situations of perforation holes can be included, and the angle degree between the axis of the liquid channel 61 and the axis of the second container 4 is not limited herein, and the situation that the perforation holes are simulated according to needs is determined.
By setting the angle between the axis of the liquid channel 61 and the axis of the second container 4 to a certain extent, the simulated perforation 41 and the perforation die 6 can simulate perforation under all conditions together, so that the requirement of experimental data accumulation is met, and the experimental device can simulate temporary plugging agent plugging pressure bearing capacity in perforation with different angles.
Example two
Fig. 5 is a schematic structural diagram of a temporary plugging agent perforation plugging pressure-bearing experimental device for acidizing and fracturing according to a second embodiment of the present invention; fig. 6 is a schematic diagram of a first container structure in an experimental device for plugging pressure bearing by using temporary plugging agent perforation holes for acidizing and fracturing according to a second embodiment of the present invention. Further, as shown in fig. 5 and 6, the second chamber 23 is provided with a filling port 24. When the fracturing base fluid in the second chamber 23 of the first container 2 is insufficient to meet the experimental requirement, the fracturing base fluid can be added into the second chamber 23 through the liquid adding port 24, and optionally, a cover 25 is arranged at the liquid adding port 24 on the second chamber 23, and the liquid adding port 24 is sealed by the cover 25 to prevent gas from overflowing from the liquid adding port 24. The cover 25 is detachably connected to the first container 2, for example, a key connection, a screw connection, etc., and the present embodiment is not limited thereto as long as the connection is made in a manner that allows detachment and seals the filling opening 24.
By arranging the liquid adding port 24 on the second chamber 23, the amount of the fracturing base liquid in the second chamber 23 can be controlled, when the amount of the fracturing base liquid in the second chamber 23 is insufficient, the pressurizing pump 1 is stopped firstly, when the pressure in the first container 2 is stable, the fracturing base liquid is added into the first container 2 through the liquid adding port 24, the liquid adding port 24 is sealed through the cover body 25, the liquid is added into the first container 2 through the liquid adding port 24 quickly and conveniently, and the first container 2 is not required to be detached from the whole experimental device for liquid adding.
Further, the temporary plugging agent perforation plugging pressure-bearing experimental device for acidizing and fracturing further comprises a pressure detection piece 3, wherein the pressure detection piece 3 is connected with the second chamber 23, and the pressure detection piece 3 is used for detecting the pressure of the second chamber 23. The pressure detecting member 3 may be a pressure gauge, a pressure sensor, or the like that detects the pressure of the second chamber 23, and the embodiment is not limited herein as to what kind of member is specifically used as the pressure detecting member 3, as long as the member can detect the pressure of the second chamber 23.
The pressure detecting piece 3 is communicated with the second chamber 23, so that the pressure in the second chamber 23 can be detected, the pressure applied by the first container 2 to the second container 4 can be obtained, meanwhile, the pressure born by the mixture of the temporary plugging agent and the fracturing base fluid in the hole die 6 can be obtained, the numerical value displayed by the pressure detecting piece 3 can be used as important data of the pressure bearing capacity of the temporary plugging agent, and the visual judgment of the pressure bearing capacity of the temporary plugging agent for plugging the perforation hole can be made through the numerical value displayed by the pressure detecting piece 3.
Example III
Fig. 7 is a schematic structural diagram of a temporary plugging agent perforation plugging pressure-bearing experimental device for acidizing and fracturing according to the third embodiment of the invention. On the basis of the second embodiment, as shown in fig. 7, further, the experimental device for plugging pressure bearing by using temporary plugging agent perforation holes for acidizing and fracturing further comprises an incubator 8, and the second container 4 and the perforation die 6 are positioned in the incubator 8. Wherein the oven 8 is able to provide a certain temperature of the equipment for the second container 4 and the eyelet die 6.
Further, the incubator 8 may be provided as a temperature-adjustable incubator 8 body, may be a heating thermostat device using air as a medium, or the incubator 8 may be a heating thermostat device using liquid as a medium. Wherein, the heating rate is faster when adopting air as heating medium, and the heat preservation effect is better when adopting liquid as heating medium, does not do the restriction to this embodiment of heating medium here, sets up the thermostated container 8 into temperature adjustable thermostated container 8 body, can obtain the shutoff bearing capacity of temporary plugging agent in perforation under different temperatures through adjusting the temperature of thermostated container 8, makes the experimental result more comprehensive.
Example IV
Fig. 8 is a schematic structural diagram of a temporary plugging agent perforation plugging pressure-bearing experimental device for acidizing and fracturing according to a fourth embodiment of the invention. On the basis of the third embodiment, further, as shown in fig. 8, the temporary plugging agent perforation plugging pressure-bearing experimental device for acidizing and fracturing further comprises a stirring assembly 5, wherein the stirring assembly 5 is connected with the second container 4, and the stirring end of the stirring assembly 5 stretches into the second container 4. The stirring assembly 5 may adopt various structures, for example, as shown in fig. 3, fig. 5 and fig. 6, the stirring assembly 5 is composed of a motor 51, a connecting rod 52 and a blade 53, one end of the connecting rod 52 is fixedly connected with a shaft of the motor 51, the other end of the connecting rod is connected with a midpoint of the blade 53, the connecting rod 52 and the blade 53 are driven to rotate synchronously by the rotation of the shaft of the motor 51, the motor 51 is fixedly connected with the top wall of the second container 4, the blade 53 is located inside the second container 4 as a stirring end, the position of the blade 53 is closer to the bottom of the second container 4 than the simulated eyelet 41, and the optimal setting mode is adopted, at this time, when the motor 51 drives the blade 53 to rotate, the fracturing base liquid and the temporary plugging agent can be mixed to the greatest extent, or the motor 51 is connected with the side wall of the second container 4, the connecting rod 52 is arranged horizontally in the second container 4, the blade 53 is used as the stirring end and rotates vertically in the second container 4, and the setting mode and the position of the stirring assembly 5 are not limited here, as long as the setting mode and the position can be satisfied, and the full mixing of the temporary plugging agent and the fracturing base liquid can be avoided under the action of the simulated eyelet type of the pressure of the simulated eyelet 4 by using the stirring assembly 5.
In the practical production process, the temporary plugging agent and the fracturing base liquid are fully mixed and then injected into the oil and gas well, in the temporary plugging agent perforation plugging pressure-bearing experimental device for acidizing and fracturing, the temporary plugging agent in the second container 4 is a filiform solid, the fracturing base liquid in the second chamber 23 is a solid, the movable baffle 21 moves upwards in the pressurizing process of the pressurizing pump 1 for the first container 2, the fracturing base liquid in the second chamber 23 is pushed to the second container 4, so that the fracturing base liquid is mixed with the temporary plugging agent, however, the temporary plugging agent can be deposited in the mixture, the mixture components are uneven, so that the experimental result is influenced, the stirring end of the stirring assembly 5 rotates when the fracturing base liquid is pushed to the second container 4, the fracturing base liquid is fully mixed with the temporary plugging agent, and the step of mixing the temporary plugging agent and the fracturing base liquid in the practical production process is simulated, so that the experimental final result is influenced by the deposition of the temporary plugging agent is avoided.
Example five
Fig. 9 is a schematic structural diagram of a temporary plugging agent perforation plugging pressure-bearing experimental device for acidizing and fracturing provided by the fifth embodiment of the invention. On the basis of the fourth embodiment, further, as shown in fig. 9, the temporary plugging agent perforation plugging pressure-bearing experimental device for acidizing and fracturing further comprises a third container 9 and a weighing piece 10 for weighing the third container 9;
the third container 9 has a vent port, and the third container 9 communicates with the small diameter end of the liquid passage 61.
Wherein, the small diameter end of the third container 9 and the liquid channel 61 can be connected by a pipeline with pressure resistance, and the connection part needs sealing treatment. Optionally, a switch valve 7 is additionally arranged on a pipeline of the third container 9 communicated with the small diameter end of the liquid channel 61, and the communication state of the third container 9 and the small diameter end of the liquid channel 61 is controlled by the switch valve 7.
The third container 9 may perform a pressure release protection function, and the air pressure inside and outside the third container 9 is the same through the air vent on the third container 9, so as to perform a protection function, and the air vent may be located on the top wall of the third container 9, or the air vent is located on the side wall of the third container 9, where the number of air vents is at least one, and the positions and the number of air vents are not limited in this embodiment, so long as the air vent satisfies that the third container 9 is communicated with the external air.
The weighing piece 10 is located at the bottom of the third container 9, and can measure the mass change of the third container 9 while supporting the third container 9, and the weighing piece 10 can measure the third container 9 by using various elements, for example, an electronic scale can be used to weigh the third container 9, and the specific form of the weighing piece 10 is not limited in this embodiment.
The third container 9 can simultaneously receive the mixture of the fracturing base fluid and the temporary plugging agent discharged from the eyelet die 6, the weight change of the third container 9 is weighed by the weighing piece 10, and the weight of the fracturing base fluid and the temporary plugging agent discharged from the eyelet die 6 is obtained through the weight change of the third container 9, so that the data of the weight of the fracturing base fluid and the temporary plugging agent discharged from the eyelet die 6 can be obtained in the experimental process, and the experimental result is more accurate and comprehensive.
When the temporary plugging agent perforation plugging pressure-bearing experimental device for acidizing and fracturing is utilized to detect the performance of the temporary plugging agent, firstly, the temporary plugging agent perforation plugging pressure-bearing experimental device for acidizing and fracturing is assembled completely, the air tightness is detected, meanwhile, the booster pump 1 is connected with the stirring assembly 5 by a power supply, the switch valve 7 is closed, and the preparation work before the experiment is completed;
secondly, the switch valve 7 is closed, temporary plugging agent is added in the second container 4, fracturing base liquid is added into the second chamber 23 through the liquid adding opening 24, the liquid adding opening 24 is sealed by the cover 25, the stirring assembly 5 is started, the incubator 8 is set to be at a preset temperature, and then the incubator 8 is opened, wherein the preset temperature of the incubator 8 is the temperature for simulating acidizing and fracturing operation of the oil-gas well.
Finally, after the pressure pump 1 is set to the output pressure to be detected in the experiment, the pressure pump 1 is started, after the numerical value displayed by the pressure detection piece 3 rises to the required pressure, the switch valve 7 is opened, the output pressure of the pressure pump 1 is kept to be a constant value, the readings of the pressure detection piece 3 and the weighing piece 10 are recorded, and the readings of the pressure detection piece 3 and the weighing piece 10 can be used as the data of the experiment.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that the terms "comprises" and "comprising," and any variations thereof, as used herein, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements that are expressly listed or inherent to such process, method, article, or apparatus.
Unless specifically stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium, and can lead the connection between the two elements or the interaction relationship between the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (8)
1. The temporary plugging agent perforation hole plugging pressure-bearing experimental device for acidizing and fracturing is used for detecting the temporary plugging agent plugging pressure-bearing capacity and is characterized by comprising a pressure pump, a first container, a second container and a perforation die;
the first container is internally provided with a movable baffle, the movable baffle divides the first container into a first independent chamber and a second independent chamber, the first chamber is used for containing fluid, the second chamber is used for containing fracturing base fluid, the pressurizing pump is communicated with the first chamber, the second container is communicated with the second chamber, the second container is used for containing temporary plugging agent, and when the pressurizing pump pressurizes the first chamber, the fluid pushes the movable baffle to move so as to push the fracturing base fluid into the second container;
the side wall of the second container is provided with a plurality of blocking simulation holes, a liquid channel is arranged in the hole die, the liquid channel is communicated with any simulation hole, and the rest simulation holes are blocked; the included angle between the axis of the liquid channel and the axis of the second container is 30-90 degrees;
the second container is vertically arranged, and the position, where the second container is communicated with the second cavity, is positioned at the top of the second container;
the first container side wall is made of transparent materials, and is provided with scales for displaying the positions of the movable baffles.
2. The temporary plugging agent perforation plugging pressure-bearing experimental device for acidizing and fracturing according to claim 1, wherein the distances between each simulated perforation and the bottom of the second container are different, and each simulated perforation is provided with a detachable cap for plugging the simulated perforation.
3. The temporary plugging agent perforation plugging pressure-bearing experimental device for acidizing and fracturing according to claim 1, wherein the liquid channel is conical, and the large-diameter end of the liquid channel is communicated with the second container.
4. The temporary plugging agent perforation plugging pressure-bearing experimental device for acidizing and fracturing according to claim 1, wherein a liquid filling port is arranged on the second chamber.
5. The temporary plugging agent perforation plugging pressure-bearing experimental device for acidizing and fracturing according to claim 1, further comprising a pressure detection piece, wherein the pressure detection piece is connected with the second chamber and is used for detecting the pressure of the second chamber.
6. The temporary plugging agent perforation plugging pressure-bearing experimental device for acidizing and fracturing according to claim 1, further comprising a temperature-adjustable incubator, wherein the second container and the perforation die are positioned in the incubator.
7. The temporary plugging agent perforation plugging pressure-bearing experimental device for acidizing and fracturing according to any one of claims 1 to 6, further comprising a stirring assembly, wherein the stirring assembly is connected with a second container, and the stirring end of the stirring assembly extends into the second container.
8. The temporary plugging agent perforation plugging pressure-bearing experimental device for acidizing and fracturing according to any one of claims 3 to 6, further comprising a third container and a weighing piece for weighing the third container;
and the third container is provided with a vent, and the third container is communicated with the small-diameter end of the liquid channel.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107976520A (en) * | 2017-12-08 | 2018-05-01 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Nearly well band temporarily blocks up simulating lab test device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| AU713981B2 (en) * | 1993-10-04 | 1999-12-16 | Baker Hughes Incorporated | Method and apparatus for sealing and transferring force in a wellbore |
| US10113098B2 (en) * | 2014-12-19 | 2018-10-30 | Halliburton Energy Servives, Inc. | Composition including viscosifier polymer and polyamine viscosity modifier for treatment of subterranean formations |
| CN104950088B (en) * | 2015-07-13 | 2016-06-01 | 中国石油大学(北京) | The device of the perf shutoff of artificial ground |
| CN107288603A (en) * | 2017-06-13 | 2017-10-24 | 北京大学 | A kind of experimental provision of simulation fracture turnaround fracture and its application |
| CN108104789B (en) * | 2018-01-31 | 2020-08-04 | 西南石油大学 | Crack-adjustable temporary plugging acid fracturing steering performance testing device and evaluation method |
| CN108508151A (en) * | 2018-04-02 | 2018-09-07 | 中国石油大学(华东) | A kind of pressure break diverting agent sealing characteristics evaluation experimental device and its working method and application |
| CN109630084B (en) * | 2018-12-03 | 2021-04-20 | 中国石油天然气集团有限公司 | Pulsating load temporary plugging fracturing simulation device and method |
| CN109709021B (en) * | 2019-02-26 | 2022-02-22 | 中国石油大学(华东) | Experimental device and method for evaluating plugging and deblocking effects of plugging agent in perforation crack |
-
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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Non-Patent Citations (1)
| Title |
|---|
| 姜伟 ; 管保山 ; 李阳 ; 才博 ; .新型水溶性暂堵剂在重复压裂中的暂堵转向效果.钻井液与完井液.(第06期),全文. * |
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