CN115561122A - Test device for simulating shale reservoir fracturing fracture - Google Patents
Test device for simulating shale reservoir fracturing fracture Download PDFInfo
- Publication number
- CN115561122A CN115561122A CN202211085945.9A CN202211085945A CN115561122A CN 115561122 A CN115561122 A CN 115561122A CN 202211085945 A CN202211085945 A CN 202211085945A CN 115561122 A CN115561122 A CN 115561122A
- Authority
- CN
- China
- Prior art keywords
- transparent plate
- simulating
- frame body
- test device
- shale reservoir
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
- G01N13/04—Investigating osmotic effects
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
Abstract
The invention relates to the technical field of shale oil and gas development, and provides a test device for simulating a shale reservoir fracturing fracture, which comprises: the device comprises a frame, a first transparent plate, a second transparent plate and a driving mechanism; the first transparent plate is arranged in the frame and connected with the frame; the second transparent plate is arranged opposite to the first transparent plate, the first transparent plate is parallel to the second transparent plate, the second transparent plate is movably arranged in the frame, and a gap for simulating a crack is formed between the first transparent plate and the second transparent plate; the driving mechanism is connected with the second transparent plate and used for driving the second transparent plate to move towards one side close to or far away from the first transparent plate; according to the invention, the gap between the first transparent plate and the second transparent plate can be adjusted through the driving mechanism, so that the seam width can be conveniently changed, and the efficiency and accuracy of the test are improved.
Description
Technical Field
The invention relates to the technical field of shale oil and gas development, in particular to a test device for simulating a shale reservoir fracturing fracture.
Background
With the annual increase of the specific gravity of shale gas exploration and development in the energy field, the volume fracturing construction of a shale reservoir stratum becomes more common, cracks can be formed after the volume fracturing construction, a certain amount of propping agent needs to be filled in the cracks, and the volume fracturing is easier to form complex cracks, so that the migration and distribution rules of the propping agent in the complex cracks are different from those of the conventional fracturing cracks; therefore, the evaluation and research of the migration and distribution rules of the proppant in the complex fracture have important guiding significance for shale volume fracturing design, construction, evaluation of after-fracturing capacity and selection of the proppant.
When the migration and distribution rules of the propping agents are researched, the cracks need to be simulated by means of a crack simulation device, the existing crack simulation device is fixed in the width of the cracks and cannot simulate the cracks really, and therefore the accuracy and the reliability of the migration and distribution rules of the propping agents obtained by the crack simulation device are low.
Disclosure of Invention
The invention provides a test device for simulating a shale reservoir fracturing fracture, which is used for solving or improving the problem that the existing fracture simulation device is difficult to simulate the fracture really.
The invention provides a test device for simulating a shale reservoir fracturing fracture, which comprises: the device comprises a frame, a first transparent plate, a second transparent plate and a driving mechanism; the first transparent plate is arranged in the frame and connected with the frame; the second transparent plate is arranged opposite to the first transparent plate, the second transparent plate is movably arranged in the frame, and a gap for simulating a crack is formed between the first transparent plate and the second transparent plate; the driving mechanism is connected with the second transparent plate and used for driving the second transparent plate to move towards one side close to or far away from the first transparent plate.
According to the test device for simulating the shale reservoir fracturing fracture provided by the invention, the driving mechanism comprises: a rack and pinion drive mechanism; the gear rack transmission mechanism comprises a first gear and a first rack; the first gear is rotationally connected with the frame, the first rack is connected with one side, away from the first transparent plate, of the second transparent plate, and the first rack is perpendicular to the second transparent plate; the first gear is meshed with the first rack.
According to the test device for simulating the shale reservoir fracturing fracture provided by the invention, the driving mechanism further comprises: a linkage member; the rack and pinion drive mechanism is equipped with a plurality ofly, and is a plurality of rack and pinion drive mechanism follows the width direction of second transparent plate arranges, and is a plurality of rack and pinion drive mechanism's first gear passes through the linkage connects, so that it is a plurality of rack and pinion drive mechanism's first gear can synchronous revolution.
According to the test device for simulating the shale reservoir fracturing fracture provided by the invention, the linkage piece comprises: the lever body part and the plurality of engaging parts; the rack and pinion drive mechanism further comprises: a second gear and a rotating shaft; the second gear is connected with the first gear through a rotating shaft; the plurality of meshing parts are arranged in one-to-one correspondence with the second gears of the plurality of gear rack transmission mechanisms, and the meshing parts are meshed with the corresponding second gears; a plurality of meshing portions respectively with body of rod portion connects, meshing portion with body of rod portion all follows the width direction of second transparent plate extends, meshing portion with body of rod portion follows the width direction movably of second transparent plate is located on the frame.
According to the test device for simulating the shale reservoir fracturing fracture provided by the invention, the test device for simulating the shale reservoir fracturing fracture further comprises: a guide seat; the guide seat is connected with the frame, a guide groove is formed in the guide seat, and the rod body part is movably arranged in the guide groove; the guide seat is further provided with a locking mechanism, the locking mechanism is detachably connected with the rod body, and the locking mechanism is used for locking the rod body in the guide groove.
According to the test device for simulating the shale reservoir fracturing fracture provided by the invention, the test device for simulating the shale reservoir fracturing fracture further comprises: a fixed frame body and a movable frame body; the fixed frame body and the movable frame body are both arranged in the frame, the fixed frame body is detachably connected with the frame, and the first transparent plate is connected with the fixed frame body; one end of the movable frame body is sleeved on the fixed frame body, the inner side wall of one end of the movable frame body is connected with the outer side wall of the fixed frame body in a sealing mode, and the other end of the movable frame body is connected with the second transparent plate; the driving mechanism is connected with the movable frame body.
According to the test device for simulating the shale reservoir fracturing fracture, provided by the invention, the outer side wall of the fixed frame body is provided with the sealing groove group, and the sealing groove group is used for distributing sealing strips.
According to the test device for simulating the fracturing fracture of the shale reservoir, which is provided by the invention, the sealing groove group comprises: the first sealing groove, the second sealing groove and the third sealing groove are formed in the same plane; the first sealing groove, the second sealing groove and the third sealing groove are sequentially arranged at intervals along the direction close to the second transparent plate; the depth of the first sealing groove is equal to that of the second sealing groove, and the depth of the first sealing groove is larger than that of the third sealing groove.
According to the test device for simulating the shale reservoir fracturing fracture, provided by the invention, a plurality of slide rails are arranged on the inner side wall of the frame, a plurality of slide grooves are arranged on the outer side wall of the movable frame body, and the slide rails and the slide grooves are arranged in a one-to-one correspondence manner; the sliding rails and the sliding grooves extend along the direction perpendicular to the second transparent plate, and the sliding rails are used for extending into the corresponding sliding grooves; the frame is further provided with a limiting block, and the limiting block is located on one side, deviating from the fixed frame body, of the movable frame body.
According to the test device for simulating the shale reservoir fracturing fracture, a first interface and a second interface are arranged on the movable frame body, and the first interface and the second interface are oppositely arranged along the width direction of the movable frame body; and the mixture of fracturing fluid and sand is input into a gap between the first transparent plate and the second transparent plate through the first interface, and the fracturing fluid and the sand in the gap are led out through the second interface.
According to the test device for simulating the shale reservoir fracturing fracture, the gap between the first transparent plate and the second transparent plate can be conveniently adjusted through the driving mechanism, so that the fractures with different fracture widths can be well simulated, and the test accuracy is improved; when a simulation test is carried out, the driving mechanism drives the second transparent plate to be close to or far away from the first transparent plate, so that the gap between the first transparent plate and the second transparent plate is adjusted, when the gap is adjusted to be consistent with the seam width required by the test, the simulation test can be started, the simulation test method comprises the steps of mixing fracturing fluid and sand in advance to form a mixture, introducing the mixture into the gap according to a preset flow rate, enabling the mixture to migrate and spread in the gap, so as to simulate the migration and spreading of a propping agent in the crack, and enabling a tester to observe the migration rule and the spreading rule of the mixture in the gap through the first transparent plate or the second transparent plate, so that a reference basis is provided for the migration and the spreading rule of the propping agent in the complex crack; after the simulation test of this seam width is accomplished, accessible actuating mechanism increases conveniently or reduces the clearance to simulate the crack of different seam widths, so that development of follow-up simulation test, correspondingly, promoted simulation test's efficiency, and the accuracy and the credibility of migration and the exhibition law that obtain through different seam widths are higher.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a test device for simulating a fracture of a shale reservoir provided by the invention;
FIG. 2 is a second schematic structural diagram of the testing apparatus for simulating a fracture of a shale reservoir provided by the present invention;
FIG. 3 isbase:Sub>A schematic view of the structure of FIG. 2 taken along the direction A-A according to the present invention;
FIG. 4 is an enlarged schematic view of FIG. 2 at B in accordance with the present invention;
FIG. 5 is an enlarged schematic view at C of FIG. 2 provided by the present invention;
fig. 6 is a third structural schematic diagram of the testing apparatus for simulating a shale reservoir fracture provided by the present invention;
FIG. 7 is a schematic structural view of a fixed frame provided by the present invention;
FIG. 8 is a schematic cross-sectional view of the fixed frame provided by the present invention;
FIG. 9 is a schematic view showing the structure of a sealing tape according to the present invention;
FIG. 10 is a schematic structural view of a movable frame provided by the present invention;
FIG. 11 is a schematic structural view of a frame provided by the present invention;
FIG. 12 is a fourth schematic structural diagram of the test device for simulating a shale reservoir fracture provided by the invention;
reference numerals are as follows:
1: a frame; 11: a slide rail; 12: a limiting block; 2: a first transparent plate; 3: a second transparent plate; 4: a drive mechanism; 41: a rack and pinion drive mechanism; 411: a first gear; 412: a first rack; 413: a second gear; 414: a rotating shaft; 42: a linkage member; 421: a lever body portion; 422: an engaging portion; 43: a hand wheel; 441: a first bearing; 442: a first bushing; 443: a second bearing; 444: a second shaft sleeve; 5: a guide seat; 51: a locking mechanism; 6: fixing a frame body; 61: sealing the groove group; 611: a first seal groove; 612: a second seal groove; 613: a third seal groove; 7: a movable frame body; 71: a reinforcing bar; 72: a chute; 73: a first interface; 74: a second interface; 8: a seal strip; 81: and (4) a groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection, unless explicitly stated or limited otherwise; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.
The following describes a test device for simulating a shale reservoir fracturing fracture provided by the invention with reference to fig. 1 to 12.
As shown in fig. 1 to fig. 3, the test apparatus for simulating a shale reservoir fracture shown in this embodiment includes: a frame 1, a first transparent plate 2, a second transparent plate 3 and a driving mechanism 4.
The first transparent plate 2 is arranged in the frame 1, and the first transparent plate 2 is connected with the frame 1; the second transparent plate 3 is arranged opposite to the first transparent plate 2, the first transparent plate 2 is parallel to the second transparent plate 3, the second transparent plate 3 is movably arranged in the frame 1, and a gap for simulating a crack is formed between the first transparent plate 2 and the second transparent plate 3; the driving mechanism 4 is connected with the second transparent board 3, and the driving mechanism 4 is used for driving the second transparent board 3 to move towards one side close to the first transparent board 2 or one side far away from the first transparent board 2.
Specifically, the test device for simulating the shale reservoir fracturing fracture shown in this embodiment can conveniently adjust the gap between the first transparent plate 2 and the second transparent plate 3 through the driving mechanism 4, so that fractures with different fracture widths can be better simulated, and the test accuracy is improved; when a simulation test is carried out, the driving mechanism 4 drives the second transparent plate 3 to be close to or far away from the first transparent plate 2, so that a gap between the first transparent plate 2 and the second transparent plate 3 is adjusted, the first transparent plate 2, the second transparent plate 3 and the frame 1 jointly enclose a cavity, when the gap is adjusted to be consistent with the seam width required by the test, the simulation test can be started, the method of the simulation test comprises the steps of mixing fracturing fluid and sand in advance to form a mixture, introducing the mixture into the gap according to a preset flow rate, transporting and spreading the mixture in the gap to simulate the transporting and spreading of a propping agent in the crack, and a tester can observe the transporting rule and the spreading rule of the mixture in the gap through the first transparent plate 2 or the second transparent plate 3, so that a reference basis is provided for the transporting rule and the spreading rule of the propping agent in the complex crack; after the simulation test of this seam width is accomplished, accessible actuating mechanism 4 conveniently increases or reduces the clearance to the crack of different seam widths is simulated, so that development of follow-up simulation test, correspondingly, has promoted simulation test's efficiency, and the accuracy and the credibility of migration and the exhibition law that obtain through different seam widths are higher.
It should be noted that the driving mechanism 4 shown in this embodiment is used to move the second transparent plate 3 along a direction perpendicular to the second transparent plate 3, and the driving mechanism may specifically be a hydraulic cylinder, an air cylinder, a linear motor, or a rack and pinion transmission mechanism shown in the following embodiments, and when the driving mechanism 4 is the rack and pinion transmission mechanism, the rotational motion of the gear is converted into the linear motion of the rack, so as to implement the movement of the second transparent plate 3; the first transparent plate 2 and the second transparent plate 3 are preferably toughened glass plates.
In some embodiments, as shown in fig. 1 to 5, the driving mechanism 4 shown in the present embodiment includes: a rack and pinion transmission 41; the rack and pinion gear 41 includes a first gear 411 and a first rack 412; the first gear 411 is rotatably connected with the frame 1, the first rack 412 is connected with one side of the second transparent plate 3, which is far away from the first transparent plate 2, and the first rack 412 is perpendicular to the second transparent plate 3; the first gear 411 is engaged with the first rack 412.
Specifically, by rotating the first gear 411, correspondingly, the first rack 412 moves along the extending direction of the first rack 412, so as to drive the second transparent plate 3 to move, and since the first rack 412 is perpendicular to the second transparent plate 3, the moving direction of the second transparent plate 3 is always perpendicular to the second transparent plate 3, so that the second transparent plate 3 and the first transparent plate 2 can always keep a parallel state; the extension or retraction of the first rack 412 can be achieved by rotating the first gear 411 in a forward direction or rotating the first gear 411 in a reverse direction to achieve the approach or the distance of the second transparent board 3 to the first transparent board 2.
In some embodiments, as shown in fig. 1, fig. 2 and fig. 6, the driving mechanism 4 of the present embodiment further includes: a link 42; the rack and pinion gear 41 is provided in plurality, the rack and pinion gear 41 is arranged in the width direction of the second transparent plate 3, and the first gears 411 of the rack and pinion gear 41 are connected by the link 42, so that the first gears 411 of the rack and pinion gear 41 can rotate synchronously.
Specifically, through setting up linkage 42 for a plurality of first gears 411 are in the linkage state, and then when the experimenter rotated arbitrary first gear 411, all the other first gears 411 homoenergetic rotated in step, correspondingly, a plurality of first rack 412 synchronous motion, make second transparent plate 3 at the removal in-process atress comparatively even, guaranteed the depth of parallelism between second transparent plate 3 and the first transparent plate 2, and then guaranteed the uniformity in clearance between first transparent plate 2 and the second transparent plate 3.
Wherein the linkage 42 may be a belt or a chain.
In some embodiments, as shown in fig. 1-4, the linkage 42 of the present embodiment includes: the shaft body portion 421 and the plurality of engaging portions 422; the rack and pinion gear 41 further includes: a second gear 413 and a rotating shaft 414; the second gear 413 is connected with the first gear 411 through the rotating shaft 414, so that the second gear 413 and the first gear 411 can rotate synchronously; the plurality of engaging portions 422 are provided in one-to-one correspondence with the second gears 413 of the plurality of rack and pinion transmission mechanisms 41, and the engaging portions 422 are engaged with the corresponding second gears 413; the engaging portions 422 are respectively connected to the rod portions 421, the engaging portions 422 and the rod portions 421 both extend along the width direction of the second transparent plate 3, and the engaging portions 422 and the rod portions 421 are movably disposed on the frame 1 along the width direction of the second transparent plate 3.
Specifically, when a tester rotates one of the first gears 411, the second gear 413 corresponding to the first gear 411 starts to rotate, so that the second gear 413 drives the meshing portion 422 and the rod portion 421 to move along the width direction of the second transparent plate 3, and since the rest of the second gears 413 are meshed with the corresponding meshing portion 422, the rod portion 421 can drive the rest of the second gears 413 to synchronously rotate in the moving process, and further the corresponding first gears 411 are driven to rotate through the rotating shaft 414, so that the second transparent plate 3 is driven by a plurality of first racks 412 together, the stress uniformity of the second transparent plate 3 is ensured, and the parallelism between the first transparent plate 2 and the second transparent plate 3 is ensured.
Each rotating shaft 414 is provided with a hand wheel 43, so that an operator can rotate the rotating shaft through the hand wheel 43 to realize the rotation of the first gear 411 and the second gear 413.
Further, as shown in fig. 1 to 3, since the second transparent board 3 has a certain height, the rotating shaft 414 extends along the height direction of the second transparent board 3, the rotating shaft 414 is relatively long, and two first gears 411 are respectively disposed at two ends of each rotating shaft 414, that is, two first racks 412 are correspondingly disposed on each rotating shaft 414, so that the uniformity of the force applied to the second transparent board 3 along the height direction can be ensured, and the parallelism between the first transparent board 2 and the second transparent board 3 is further ensured.
As shown in fig. 4, a first end of the rotating shaft 414 is connected to the frame 1 through a first bearing 441, and a first bushing 442 is disposed between the first gear 411 and the second gear 413 at the first end of the rotating shaft 414 to position the first gear 411 and the second gear 413.
As shown in fig. 5, the second end of the rotating shaft 414 is connected to the frame 1 through a second bearing 443, and a second bushing 444 is disposed between the second bearing 443 at the second end of the rotating shaft 414 and the first gear 411 to position the first gear 411 and the second bearing 443.
The width direction of the second transparent plate 3 is the direction from left to right or from right to left in fig. 2, and the height direction of the second transparent plate 3 is the direction from top to bottom or from bottom to top in fig. 2.
In some embodiments, as shown in fig. 1 to 3 and 6, the test device for simulating a shale reservoir fracture shown in this embodiment further includes: a guide seat 5; the guide seat 5 is connected with the frame 1, a guide groove is arranged on the guide seat 5, and the rod body part 421 is movably arranged in the guide groove; the guide base 5 is further provided with a locking mechanism 51, the locking mechanism 51 is detachably connected with the lever portion 421, and the locking mechanism 51 is used for locking the lever portion 421 in the guide groove.
Specifically, by arranging the guide seat 5, the guide groove guides the rod portion 421, so that the rod portion 421 and the meshing portion 422 are guided to move in the width direction of the second transparent plate 3, the movement stability of the linkage member 42 is ensured, the plurality of second gears 413 can realize stable linkage, the plurality of first racks 412 synchronously drive the second transparent plate 3 to move, and the parallelism of the first transparent plate 2 and the second transparent plate 3 is ensured; after the gap between the first transparent plate 2 and the second transparent plate 3 is adjusted, the rod 421 is locked in the guide groove by the locking mechanism 51, so that the rod 421 and the guide seat 5 do not slide relatively, the engaging portion 422 and the second gear 413 keep relatively static, the rotating shaft 414 also keeps static, the gap between the first transparent plate 2 and the second transparent plate 3 can be kept stable, and the reliability of the test result is ensured.
The locking mechanism 51 may be a bolt, a threaded hole is formed in the guide base 5, and the bolt screwed into the threaded hole can abut against the rod 421.
In some embodiments, as shown in fig. 1 to 3, the testing apparatus for simulating a shale reservoir fracture shown in this embodiment further includes: a fixed frame body 6 and a movable frame body 7; the fixed frame body 6 and the movable frame body 7 are arranged in the frame 1, the fixed frame body 6 is detachably connected with the frame 1, and the first transparent plate 2 is connected with the fixed frame body 6; one end of the movable frame body 7 is sleeved on the fixed frame body 6, the inner side wall of one end of the movable frame body 7 is hermetically connected with the outer side wall of the fixed frame body 6, and the other end of the movable frame body 7 is connected with the second transparent plate 3; the driving mechanism 4 is connected to the movable frame 7.
Specifically, the first transparent plate 2 is fixed through the fixed frame body 6, the second transparent plate 3 is fixed through the movable frame body 7, the stability of the first transparent plate 2 and the second transparent plate 3 is improved, and the first transparent plate 2 and the second transparent plate 3 can be conveniently replaced by a tester; the movable frame 7 is provided with a plurality of reinforcing rods 71, on one hand, the reinforcing rods 71 can increase the strength of the movable frame 7, on the other hand, the reinforcing rods 71 increase the contact area between the movable frame 7 and the second transparent plate 3, and meanwhile, the first rack 412 is connected with the movable frame 7, so that the second transparent plate 3 is prevented from cracking due to stress concentration.
In some embodiments, as shown in fig. 7 and 8, the outer side wall of the fixed frame 6 shown in this embodiment is provided with a sealing groove group 61, and the sealing groove group 61 is used for arranging the sealing strips 8.
Specifically, decide the framework 6, first transparent plate 2, move framework 7 and second transparent plate 3 and enclosed into a seal chamber jointly, move framework 7 when moving one side that framework 6 was close to or kept away from to one side of deciding framework 6 towards, sealing strip 8 can guarantee to decide the lateral wall of framework 6 and move the leakproofness between the inside wall of framework 7, the phenomenon of leaking appears in fracturing fluid and the sand in the seal chamber between first transparent plate 2 and the second transparent plate 3, analogue test's reliability has been guaranteed.
Wherein, as shown in fig. 7 and 9, the fixed frame 6 is a rectangular frame, correspondingly, the sealing strips 8 are also rectangular frames, the number of the sealing strips 8 is four, the two ends of each sealing strip 8 are provided with grooves 81, and the grooves of two adjacent sealing strips 8 are matched, so that the rectangular frame can be spliced.
In some embodiments, as shown in fig. 8, the seal groove group 61 shown in the present embodiment includes: a first seal groove 611, a second seal groove 612, and a third seal groove 613; the first sealing groove 611, the second sealing groove 612 and the third sealing groove 613 are sequentially arranged at intervals along the direction close to the second transparent plate 3; the depth of the first seal groove 611 is equal to the depth of the second seal groove 612, the depth of the first seal groove 611 is greater than the depth of the third seal groove 613, accordingly, the specifications of the sealing strips in the first seal groove 611 and the second seal groove 612 are the same, and the sealing performance between the fixed frame 6 and the movable frame 7 is ensured by providing a plurality of seal grooves.
In some embodiments, as shown in fig. 10 and 11, the inner side wall of the frame 1 is provided with a plurality of slide rails 11, the outer side wall of the movable frame 7 is provided with a plurality of slide grooves 72, and the plurality of slide rails 11 and the plurality of slide grooves 72 are arranged in a one-to-one correspondence; the sliding rails 11 and the sliding grooves 72 both extend in a direction perpendicular to the second transparent plate 3, and the sliding rails 11 are used for extending into the corresponding sliding grooves 72; the frame 1 is further provided with a limiting block 12, and the limiting block 12 is positioned on one side of the movable frame body 7 departing from the fixed frame body 6.
Specifically, by arranging the sliding rail 11 and the sliding groove 72, the stability of the movable frame 7 when moving relative to the fixed frame 6 is ensured, and the sliding rail 11 and the sliding groove 72 play a role in guiding the movement of the movable frame 7 and also ensure the parallelism between the first transparent plate 2 and the second transparent plate 3; when the movable frame 7 moves towards the side far away from the fixed frame 6, the limiting block 12 limits the movable frame 7, so that the movable frame 7 is prevented from moving out of the frame 1.
In some embodiments, as shown in fig. 1, fig. 2, fig. 10 and fig. 12, the movable frame 7 shown in this embodiment is provided with a first interface 73 and a second interface 74, and the first interface 73 and the second interface 74 are disposed oppositely along the width direction of the movable frame 7; the mixture of the fracturing fluid and the sand is used for being input into the gap between the first transparent plate 2 and the second transparent plate 3 through the first interface 73, and the fracturing fluid and the sand in the gap are used for being led out through the second interface 74.
Specifically, before the simulation test is performed, the first port 73 is communicated with the inlet shaft, the second port 74 is communicated with the recovery tank through the outlet shaft, a mixture of fracturing fluid and sand is pumped into the gap through the inlet shaft by using a screw pump, the mixture is transported and spread in the gap and flows towards the second port 74, finally, the mixture flows into the recovery tank through the second port 74 and the outlet shaft in sequence, and the flow of the outlet shaft can be controlled by a flow meter and a flow control valve which are arranged at the second port 74.
Furthermore, a plurality of test devices for simulating shale reservoir fracturing fractures can be connected in series, the test devices for simulating shale reservoir fracturing fractures are sequentially arranged along the width direction of the second transparent plate 3, and the adjacent first interfaces 73 and the second interfaces 74 are communicated so as to increase the flowing distance of the mixture in the gap, so that fractures with different lengths can be simulated, and the universality of the test device is improved.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present 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 solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a test device for simulating shale reservoir fracturing fracture which characterized in that includes:
a frame;
the first transparent plate is arranged in the frame and connected with the frame;
the second transparent plate is arranged opposite to the first transparent plate, the second transparent plate is movably arranged in the frame, and a gap for simulating cracks is formed between the first transparent plate and the second transparent plate;
and the driving mechanism is connected with the second transparent plate and is used for driving the second transparent plate to move towards one side close to or far away from the first transparent plate.
2. The test device for simulating a shale reservoir fracturing fracture of claim 1,
the drive mechanism includes: a rack and pinion transmission mechanism; the gear rack transmission mechanism comprises a first gear and a first rack;
the first gear is rotationally connected with the frame, the first rack is connected with one side, away from the first transparent plate, of the second transparent plate, and the first rack is perpendicular to the second transparent plate; the first gear is meshed with the first rack.
3. The test device for simulating a shale reservoir fracturing fracture of claim 2,
the drive mechanism further includes: a linkage member;
the gear rack transmission mechanisms are arranged in a plurality of numbers, the gear rack transmission mechanisms are arranged along the width direction of the second transparent plate, and the first gears of the gear rack transmission mechanisms are connected through the linkage piece, so that the first gears of the gear rack transmission mechanisms can synchronously rotate.
4. The test device for simulating a shale reservoir fracturing fracture of claim 3,
the linkage includes: the rod body part is connected with a plurality of meshing parts;
the rack and pinion drive mechanism further comprises: a second gear and a rotating shaft;
the second gear is connected with the first gear through a rotating shaft; the plurality of meshing parts are arranged in one-to-one correspondence with the second gears of the plurality of gear rack transmission mechanisms, and the meshing parts are meshed with the corresponding second gears;
the plurality of meshing portions are respectively connected with the rod body portion, the meshing portions and the rod body portion extend along the width direction of the second transparent plate, and the meshing portions and the rod body portion are movably arranged on the frame along the width direction of the second transparent plate.
5. The test device for simulating a shale reservoir fracturing fracture of claim 4,
the test device for simulating shale reservoir fracturing fracture further comprises: a guide seat;
the guide seat is connected with the frame, a guide groove is formed in the guide seat, and the rod body part is movably arranged in the guide groove;
the guide seat is further provided with a locking mechanism, the locking mechanism is detachably connected with the rod body, and the locking mechanism is used for locking the rod body in the guide groove.
6. The test device for simulating a shale reservoir fracturing fracture according to any one of claims 1 to 5,
the test device for simulating shale reservoir fracturing fracture further comprises: a fixed frame body and a movable frame body;
the fixed frame body and the movable frame body are both arranged in the frame, the fixed frame body is detachably connected with the frame, and the first transparent plate is connected with the fixed frame body;
one end of the movable frame body is sleeved on the fixed frame body, the inner side wall of one end of the movable frame body is connected with the outer side wall of the fixed frame body in a sealing mode, and the other end of the movable frame body is connected with the second transparent plate;
the driving mechanism is connected with the movable frame body.
7. The test device for simulating a shale reservoir fracturing fracture of claim 6,
the outer side wall of the fixed frame body is provided with a sealing groove group, and the sealing groove group is used for distributing sealing strips.
8. The test device for simulating a shale reservoir fracturing fracture of claim 7,
the seal groove group includes: the first sealing groove, the second sealing groove and the third sealing groove are formed in the same plane;
the first sealing groove, the second sealing groove and the third sealing groove are sequentially arranged at intervals along the direction close to the second transparent plate;
the depth of the first sealing groove is equal to that of the second sealing groove, and the depth of the first sealing groove is larger than that of the third sealing groove.
9. The test device for simulating a shale reservoir fracturing fracture of claim 6,
the inner side wall of the frame is provided with a plurality of slide rails, the outer side wall of the movable frame body is provided with a plurality of slide grooves, and the plurality of slide rails and the plurality of slide grooves are arranged in a one-to-one correspondence manner;
the sliding rails and the sliding grooves extend along the direction perpendicular to the second transparent plate, and the sliding rails are used for extending into the corresponding sliding grooves;
the frame is further provided with a limiting block, and the limiting block is located on one side, deviating from the fixed frame body, of the movable frame body.
10. The test device for simulating a shale reservoir fracturing fracture of claim 6,
the movable frame body is provided with a first interface and a second interface which are oppositely arranged along the width direction of the movable frame body; and the mixture of fracturing fluid and sand is input into a gap between the first transparent plate and the second transparent plate through the first interface, and the fracturing fluid and the sand in the gap are led out through the second interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211085945.9A CN115561122A (en) | 2022-09-06 | 2022-09-06 | Test device for simulating shale reservoir fracturing fracture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211085945.9A CN115561122A (en) | 2022-09-06 | 2022-09-06 | Test device for simulating shale reservoir fracturing fracture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115561122A true CN115561122A (en) | 2023-01-03 |
Family
ID=84738211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211085945.9A Pending CN115561122A (en) | 2022-09-06 | 2022-09-06 | Test device for simulating shale reservoir fracturing fracture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115561122A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116181317A (en) * | 2023-02-23 | 2023-05-30 | 西南石油大学 | Device and method for testing displacement effect of plugging gel of rough fracture surface |
-
2022
- 2022-09-06 CN CN202211085945.9A patent/CN115561122A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116181317A (en) * | 2023-02-23 | 2023-05-30 | 西南石油大学 | Device and method for testing displacement effect of plugging gel of rough fracture surface |
| CN116181317B (en) * | 2023-02-23 | 2023-11-14 | 西南石油大学 | Device and method for testing displacement effect of plugging gel of rough fracture surface |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11313775B2 (en) | Device and method for evaluating fracture initiation and propagation, and stress sensitivity of propped fracture | |
| CN115561122A (en) | Test device for simulating shale reservoir fracturing fracture | |
| CN104594871A (en) | Device and method for simulating shale complex crack sand laying | |
| US11624273B2 (en) | Shale oil fracturing synchronous energizing simulation experimental device and method | |
| CN109060475B (en) | Device for preparing various fracture cores and preparation method thereof | |
| CN108979630B (en) | Strain gauge type pressure test tight oil seepage and suction experimental device | |
| CN102134993A (en) | Simulation experiment device for controlling production of coal bed methane vertical well | |
| Ma et al. | Laboratory study on the oil displacement process in low-permeability cores with different injection fluids | |
| CN108225752B (en) | Comprehensive experimental device for particle impact drilling ground | |
| CN107725042B (en) | Physical simulation experiment device and method for high-temperature and high-pressure large-scale carbonate fracture-cave type oil reservoir | |
| CN102590887B (en) | Densification mechanism experiment simulation system and experiment method for crude oil in fault zones | |
| CN205850882U (en) | A kind of liquid-transfering device with modular pipetting head | |
| CN104790869B (en) | The brill case switching device of colliery jumbolter | |
| CN107589219A (en) | A kind of dry method pressure break takes sand evaluating apparatus and its method of work with Visual Dynamic crack | |
| CN209339937U (en) | A kind of novel probe method well pattern model waterflooding effect measuring device | |
| CN116182951A (en) | Proppant migration simulation device and method suitable for different fracture forms | |
| CN116189528A (en) | Physical simulation system for fluorescence visualization sand box in petroleum transportation and polymerization process | |
| CN217403841U (en) | Deep soil detection equipment | |
| CN104832168A (en) | Stratum mobility simulating device | |
| CN203097879U (en) | Inflow dynamic two-dimensional visible simulation device of horizontal well and straight well | |
| CN113882826B (en) | Concentric double-layer coiled tubing drilling sand pumping test system and method | |
| CN209673817U (en) | Two-dimentional petroleum bloom analyzer | |
| CN111042809B (en) | Underground stratum complex fracture state and sand blocking simulation device and method | |
| CN114397432A (en) | Concrete structure surface crack detection device | |
| CN113464108A (en) | Water-drive gas reservoir failure type water invasion development physical model experiment method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |