CN114542042A - Intelligent sand control device for oil well fracturing and control method - Google Patents
Intelligent sand control device for oil well fracturing and control method Download PDFInfo
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- CN114542042A CN114542042A CN202210281292.5A CN202210281292A CN114542042A CN 114542042 A CN114542042 A CN 114542042A CN 202210281292 A CN202210281292 A CN 202210281292A CN 114542042 A CN114542042 A CN 114542042A
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- sand
- filtering
- annular
- sieve tube
- oil
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
- E21B37/08—Methods or apparatus for cleaning boreholes or wells cleaning in situ of down-hole filters, screens, e.g. casing perforations, or gravel packs
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
- E21B43/086—Screens with preformed openings, e.g. slotted liners
Abstract
The invention discloses an intelligent sand control device and method for oil well fracturing, and particularly relates to the field of oil wells, and the intelligent sand control device comprises a packing mechanism for filtering sand, wherein the bottom of the packing mechanism for filtering sand is connected with a double-layer sand control tubular column mechanism, the outer wall of the double-layer sand control tubular column mechanism is wound with a spiral coating type drainage mechanism, the double-layer sand control tubular column mechanism is in a mesh screen structure, and the top of an inner cavity of the packing mechanism for filtering sand is connected with a blade type drainage mechanism; the double-layer sand control pipe column mechanism comprises an annular extending sand filtering pipe section, the bottom of the annular extending sand filtering pipe section is connected with a first sand filtering sieve pipe, and the bottom of the sand filtering packing mechanism is connected with a second sand filtering sieve pipe. The oil in the inner cavity of the oil containing cavity moves upwards and drives the drainage blade to rotate, so that the first sand filtering sieve tube rotates simultaneously, the coated material pushing blade is used for pushing sand-stone type materials out of the joint of the annular positioning seat and the limiting positioning ring, and the sand-stone self-cleaning process is completed.
Description
Technical Field
The invention relates to the technical field of oil wells, in particular to an intelligent sand control device for oil well fracturing and a control method.
Background
In the field of petroleum, fracturing refers to a method for forming cracks on oil and gas layers by utilizing the hydraulic action in the process of oil extraction or gas production, and is also called hydraulic fracturing, wherein the fracturing is to artificially crack the strata, improve the flowing environment of oil in the underground and increase the yield of an oil well, and plays an important role in improving the flowing condition of the bottom of the oil well, slowing down the layers and improving the oil layer using condition; the productivity evaluation of the oil well is completed through a productivity test, the conventional productivity test is carried out underground, namely the productivity index of the oil well is determined by measuring the yield and the bottom hole pressure of the oil well, so that the productivity of the oil well is evaluated, for some oil wells, the bottom hole pressure test is very difficult, the productivity evaluation is often difficult to realize, in order to effectively evaluate the productivity of the oil well, the evaluation method is improved, namely the productivity test is moved to the ground from the underground, the productivity of the oil well is evaluated through a productivity equation of a test nozzle, the productivity of the oil well is evaluated by adopting the capacity index of the nozzle, and the productivity index of the nozzle can be determined by measuring the yields of the oil wells with different nozzle sizes.
The oil well fracturing is a gas/oil production method for adopting petroleum and other oil-gas layer substances, because the pressure of a stratum is continuously reduced due to holes formed in geology in the gas/oil production process, the pressure of an overlying stratum is continuously reduced and converted into stress among rocks, so that the rocks are damaged, sand particles are peeled off from the rocks, the traditional sand control mode is carried out in a screen pipe mode, but after the sand is blocked to a certain degree, the blockage is not relieved, manual intervention is needed for cleaning, and the use is complicated.
Disclosure of Invention
In order to overcome the defects in the prior art, the embodiment of the invention provides an intelligent sand control device and method for oil well fracturing.
In order to achieve the purpose, the invention provides the following technical scheme: an intelligent sand control device for oil well fracturing comprises a sand filtering packing mechanism, wherein the bottom of the sand filtering packing mechanism is connected with a double-layer sand control tubular column mechanism, the outer wall of the double-layer sand control tubular column mechanism is wound with a spiral coating type drainage mechanism, the double-layer sand control tubular column mechanism is of a mesh screen pipe structure, and the top of an inner cavity of the sand filtering packing mechanism is connected with a blade type drainage mechanism;
the double-layer sand control pipe column mechanism comprises an annular extension sand filtering pipe section, the bottom of the annular extension sand filtering pipe section is connected with a first sand filtering sieve pipe, the bottom of the sand filtering packer mechanism is connected with a second sand filtering sieve pipe, the second sand filtering sieve pipe is sleeved outside the first sand filtering sieve pipe, and the outer wall of the first sand filtering sieve pipe is provided with a coating type material pushing blade;
the blade type drainage mechanism comprises a hollow positioning ring, the outer wall of the hollow positioning ring is provided with a drainage blade, the top of the drainage blade is provided with a first supporting and positioning cantilever which is fixedly connected with the inner wall of the packing mechanism for filtering sand, the number of the first supporting and positioning cantilevers is set to be a plurality, one end of the first supporting and positioning cantilevers close to the hollow positioning ring is connected with a supporting and positioning ring, the supporting positioning ring is rotatably connected with the outer wall of the hollow positioning ring, the bottom of the drainage blade is provided with a second supporting and positioning cantilever, the number of the second supporting and positioning cantilevers is multiple, the bottom ends of the second supporting and positioning cantilevers are fixedly arranged at the top of the annular extending sand filtering pipe section, and the top ends of the second supporting and positioning cantilevers are fixedly arranged on the outer wall of the hollow positioning ring;
the first sand-filtering sieve tube is arranged in a frustum structure, the second sand-filtering sieve tube is arranged in a cylindrical structure without a top cover at the lower part, the coated pushing blade is arranged in a spiral structure, and the coated pushing blade is arranged in a solid structure;
and the drainage blade is respectively provided with an image shooting module and an electric drive module.
In a preferred embodiment, the sand-filtering packing mechanism comprises an annular packer, a connection type preset port is formed in the top of the annular packer, and an external abutting surface is arranged outside the annular packer.
In a preferred embodiment, an arc-shaped connecting ring is integrally connected to a joint of the annular extending sand-filtering pipe section and the first sand-filtering screen pipe, the arc-shaped connecting ring is arranged in a mesh structure, and a cross section of the arc-shaped connecting ring is arranged in a semicircular shape.
In a preferred embodiment, an oil containing chamber is opened inside the first sand-filtering screen pipe, and a sand storage chamber is arranged between the first sand-filtering screen pipe and the second sand-filtering screen pipe.
In a preferred embodiment, the section of the coated pushing blade is arranged in a double-semicircular structure, and the outer edge of the section of the coated pushing blade is provided with a cylindrical protective edge.
In a preferred embodiment, the inner wall of the annular packer is provided with a limiting annular slide rail, an inner cavity of the limiting annular slide rail is provided with a correspondingly arranged annular slide block, the annular slide block is rotatably connected in the inner cavity of the limiting annular slide rail, and the annular extension sand filtering pipe section is fixedly installed on the inner wall of the annular slide block.
In a preferred embodiment, the outer wall of the first sand-filtering screen pipe is provided with an annular positioning seat, the bottom of the second sand-filtering screen pipe is provided with a limiting positioning ring, the limiting positioning ring is attached to the surface of the annular positioning seat, and the limiting positioning ring and the attaching surface of the annular positioning seat are correspondingly arranged;
preferably, mutually attracted magnet blocks are arranged in the limiting positioning ring and the annular positioning seat.
In a preferred embodiment, a supporting type top seat is installed at the top of the hollow positioning ring, an arc-shaped limiting turning plate is installed at the top of the supporting type top seat, the cross section of the arc-shaped limiting turning plate is arranged in a semicircular shape, and the arc-shaped limiting turning plate is made of rubber materials.
In a preferred embodiment, the coated drainage mechanism comprises an upper drainage plate, the upper drainage plate is fixed on the outer wall of the second sand-filtering sieve tube, a semicircular connecting plate is installed at one end, away from the second sand-filtering sieve tube, of the upper drainage plate, the upper drainage plate is connected with a lower drainage plate through the semicircular connecting plate, the lower drainage plate is attached to the surface of the second sand-filtering sieve tube, and a prefabricated liquid inlet notch is formed in the middle of the semicircular connecting plate;
one end of the lower drainage plate, which is close to the second sand-filtering sieve tube, is connected with a parallel sliding block, the outer wall of the second sand-filtering sieve tube is connected with a semicircular positioning patch, and magnet type structures which attract each other are arranged in the parallel sliding block and the semicircular positioning patch;
the top and the bottom edge of semicircle form site paster all install the semicircle form positioning seat, the semicircle form positioning seat is made by rubber, go up the drainage plate and the outer wall of drainage plate down is equipped with the spacing pull ring of complete annular constraint type.
In a preferred embodiment, a control method of the intelligent sand control device for oil well fracturing is further disclosed, and S1: longitudinally installing the sand filtering packer mechanism and the double-layer sand control pipe column mechanism in corresponding oil well holes, and positioning and fixing the first sand filtering sieve pipe by using the coated drainage mechanism and the second sand filtering sieve pipe;
s2: when oil permeates into the inner cavity of the oil containing chamber from the second sand filtering sieve tube, larger sand can stay outside the second sand filtering sieve tube, smaller sand passes through the second sand filtering sieve tube and stays between the second sand filtering sieve tube and the first sand filtering sieve tube to form a sand layering state, and finally oil is extracted from the position of the hollow positioning ring;
s3: when the outside fluid velocity of flow of screen pipe is great for the second sand filtering, partly fluid can be followed prefabricated feed liquor notch and passed, utilizes the effect of oil hydraulic pressure simultaneously, goes up the angle meeting grow of drainage plate and drainage plate down, forms obtuse state, and the drainage plate slides from top to bottom through parallel slider down, and the velocity of flow as fluid approaches to steady back, goes up the drainage plate and makes its angle resume to the acute angle state through the effect of the spacing pull ring of constraint type with drainage plate down. In the process, the available area for the second sand screen to penetrate can be increased;
s4: when part grit passes the second screen pipe for the sand filtration, when stopping at first screen pipe outer wall for the sand filtration, fluid holding chamber inner chamber's fluid upward movement drives the drainage blade simultaneously and rotates for first screen pipe for the sand filtration rotates simultaneously, and when first screen pipe for the sand filtration was rotatory, utilize the cladding formula to push away the laminating department that material blade pushed out annular positioning seat and spacing type holding ring with grit type material, the process of completion grit self-cleaning.
The invention has the technical effects and advantages that:
1. when part of the sand passes through the second sand filtering sieve tube and stays on the outer wall of the first sand filtering sieve tube, oil in an inner cavity of the oil containing chamber moves upwards and drives the drainage blade to rotate at the same time, so that the first sand filtering sieve tube rotates at the same time, and when the first sand filtering sieve tube rotates, the coated material pushing blade is used for pushing sand-stone type materials out of a joint of the annular positioning seat and the limiting positioning ring, so that the process of self-cleaning the sand-stone is completed, and the sand-stone blocking probability is reduced;
2. when the flow velocity of oil outside the second sand filtering sieve tube is large, a part of oil can pass through the prefabricated liquid inlet notch, and meanwhile, under the action of the oil hydraulic pressure, the angle between the upper drainage plate and the lower drainage plate can be enlarged to form an obtuse angle state;
3. utilize the processing of image shooting module, after the drainage blade abnormal operation is grabbed to the module is shot to the image, perhaps when fluid holds the cavity inner chamber and does not have liquid to infiltrate, send signal text to electric drive module for electric drive module promotes the drainage blade and carries out the electric drive operation, and the grit of discharging promotes grit exhaust stability.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic bottom structure of the present invention.
Fig. 3 is a structural sectional view of the present invention.
FIG. 4 is an enlarged view of the portion A of FIG. 3 according to the present invention.
FIG. 5 is an enlarged view of the portion B of FIG. 3 according to the present invention.
FIG. 6 is an enlarged view of the structure of the portion C of FIG. 3 according to the present invention.
Fig. 7 is a structural sectional view of the cladding type drainage mechanism.
The reference signs are: 1 sand filtering packing mechanism, 101 annular packer, 102 joining type preset port, 103 external binding surface, 2 double-layer sand control pipe column mechanism, 21 annular extension sand filtering pipe section, 22 first sand filtering sieve pipe, 23 coating type pushing blade, 24 second sand filtering sieve pipe, 25 arc-shaped connecting ring, 26 oil liquid containing chamber, 27 limiting type annular slide rail, 28 annular slide block, 29 annular positioning seat, 210 limiting type positioning ring, 3 coating type drainage mechanism, 31 upper drainage plate, 32 semicircular connecting plate, 33 lower drainage plate, 34 prefabricated liquid inlet notch, 35 parallel slide block, 36 semicircular positioning seat, 37 semicircular positioning paster, 38 bound type limiting pull ring, 4 blade type drainage mechanism, 41 hollow positioning ring, 42 drainage blade, 43 first supporting and positioning cantilever, 44 supporting and positioning ring, 45 second supporting and positioning cantilever, 46 supporting type top seat and 47 arc-shaped limiting turning plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1: an intelligent sand control device for oil well fracturing comprises a sand filtering packer mechanism 1, wherein the bottom of the sand filtering packer mechanism 1 is connected with a double-layer sand control tubular column mechanism 2, the outer wall of the double-layer sand control tubular column mechanism 2 is connected with a spiral coating type drainage mechanism 3 in a winding manner, the double-layer sand control tubular column mechanism 2 is of a mesh screen pipe structure, and the top of an inner cavity of the sand filtering packer mechanism 1 is connected with a vane type drainage mechanism 4;
the double-layer sand control pipe column mechanism 2 comprises an annular extension sand filtering pipe section 21, the bottom of the annular extension sand filtering pipe section 21 is connected with a first sand filtering sieve pipe 22, the bottom of the sand filtering packer mechanism 1 is connected with a second sand filtering sieve pipe 24, the second sand filtering sieve pipe 24 is sleeved outside the first sand filtering sieve pipe 22, and the outer wall of the first sand filtering sieve pipe 22 is provided with a coating type material pushing blade 23;
the blade type drainage mechanism 4 comprises a hollow positioning ring 41, a drainage blade 42 is installed on the outer wall of the hollow positioning ring 41, a first supporting and positioning cantilever 43 is installed at the top of the drainage blade 42, the first supporting and positioning cantilever 43 is fixedly connected to the inner wall of the sand filtering packer 1, the number of the first supporting and positioning cantilevers 43 is multiple, one end, close to the hollow positioning ring 41, of each first supporting and positioning cantilever 43 is connected with a supporting and positioning ring 44, the supporting and positioning ring 44 is rotatably connected to the outer wall of the hollow positioning ring 41, a second supporting and positioning cantilever 45 is arranged at the bottom of the drainage blade 42, the number of the second supporting and positioning cantilevers 45 is multiple, the bottom ends of the second supporting and positioning cantilevers 45 are fixedly installed at the top of the annular extending sand filtering pipe section 21, and the top ends of the second supporting and positioning cantilevers 45 are fixedly installed on the outer wall of the hollow positioning ring 41;
the first sand-filtering sieve tube 22 is arranged in a frustum structure, the second sand-filtering sieve tube 24 is arranged in a cylindrical structure without a top cover at the lower part, the coated pushing blade 23 is arranged in a spiral structure, and the coated pushing blade 23 is arranged in a solid structure;
the image shooting module and the electric driving module are respectively arranged on the drainage blade 42.
It should be further explained that the sand-filtering packing mechanism 1 and the double-layer sand-control tubular column mechanism 2 are longitudinally installed in corresponding oil well holes, the coated drainage mechanism 3 and the second sand-filtering screen pipe 24 are used for positioning and fixing the first sand-filtering screen pipe 22, part of the sand passes through the second sand-filtering screen pipe 24, when the sand stays on the outer wall of the first sand-filtering screen pipe 22, oil in the inner cavity of the oil containing chamber 26 moves upwards, and the drainage blades 42 are driven to rotate at the same time, so that the first sand-filtering screen pipe 22 rotates at the same time, and when the first sand-filtering screen pipe 22 rotates, the coated material-pushing blades 23 are used for pushing sand-type materials out of the joint of the annular positioning seat 29 and the limiting positioning ring 210, so as to complete the process of self-cleaning of the sand;
in addition, the drainage blade 42 utilizes the upward movement force of the oil in a normal state to complete the slow self-running effect, and when the image shooting module catches that the drainage blade 42 runs abnormally or no liquid seeps into the inner cavity of the oil containing cavity 26, a signal text is sent to the electric driving module, so that the electric driving module pushes the drainage blade 42 to run in an electric driving mode to discharge sand;
in the process of capturing pictures by the image capturing module, capturing pictures at fixed positions at fixed second speed intervals, and capturing the deviation degree of the blade lines of the drainage blades 42;
individual pixels in the image are first grabbed,
in the comparison of the two random images of the drainage blade 42, the correlation relationship is:
U(Xi)＝O(Xi-1)
wherein U and 0 represent the numbers of the front and rear photographs, respectively, and Y representsa、YbRespectively representing two random picture light field sequences, and obtaining a single-pixel intensity value sequence, Xi and Xi-1The serial numbers of the two photographs are shown, P (xi) is the object image of the drainage blade 42,
reconstructing a line pixel deviation gradient map of a target image according to the edge line deviation of the drainage blade 42 of the front and the back pictures, determining the deviation of the drainage blade 42 according to the number of preset deviation pixel points, and when the deviation pixel points are larger than a preset value,
according to Ta-Yb＝∑Xi{O(Xi)P (Xi)-O(Xi-1)P(Xi)}，
Find outXiO(Xi){P (Xi)-P(Xi+1)}
Finally, the composite material is obtained,
wherein, Ya-YbGradient map for target image
And corresponding single-pixel signals, thereby completing reconstruction of a pixel point gradient map of the drainage vane 42.
Example 2: the sand filtering packing mechanism 1 comprises an annular packer 101, the top of the annular packer 101 is provided with a joint type preset port 102, the outside of the annular packer 101 is provided with an external binding surface 103, the joint of an annular extending sand filtering pipe section 21 and a first sand filtering sieve pipe 22 is integrally connected with an arc-shaped joint ring 25, the arc-shaped joint ring 25 is arranged in a mesh structure, the cross section of the arc-shaped joint ring 25 is arranged in a semicircular shape, an oil containing chamber 26 is arranged inside the first sand filtering sieve pipe 22, a sand storage cavity is arranged between the first sand filtering sieve pipe 22 and a second sand filtering sieve pipe 24, the section of a coated material pushing blade 23 is arranged in an upper-lower double-semicircular structure, the outer edge of the section of the coated material pushing blade 23 is provided with a cylindrical protecting edge, the inner wall of the annular packer 101 is provided with a limiting annular slide rail 27, the inner cavity of the limiting annular slide rail 27 is provided with an annular slide block 28 correspondingly arranged, the annular slide block 28 is rotatably connected in the inner cavity of the limiting annular slide rail 27, the annular extending sand-filtering pipe section 21 is fixedly arranged on the inner wall of the annular slide block 28, the outer wall of the first sand-filtering sieve pipe 22 is provided with an annular positioning seat 29, the bottom of the second sand-filtering sieve pipe 24 is provided with a limiting positioning ring 210, the limiting positioning ring 210 is attached to the surface of the annular positioning seat 29, and the attaching surfaces of the limiting positioning ring 210 and the annular positioning seat 29 are correspondingly arranged;
preferably, the spacing-type positioning ring 210 and the annular positioning seat 29 are provided with mutually attracted magnet blocks.
The top of the hollow positioning ring 41 is provided with a supporting type top seat 46, the top of the supporting type top seat 46 is provided with an arc-shaped limiting turning plate 47, the cross section of the arc-shaped limiting turning plate 47 is arranged in a semicircular shape, and the arc-shaped limiting turning plate 47 is made of rubber materials.
Example 3: the coated drainage mechanism 3 comprises an upper drainage plate 31, the upper drainage plate 31 is fixed on the outer wall of the second sand-filtering sieve tube 24, a semicircular connecting plate 32 is installed at one end, away from the second sand-filtering sieve tube 24, of the upper drainage plate 31, the upper drainage plate 31 is connected with a lower drainage plate 33 through the semicircular connecting plate 32, the lower drainage plate 33 is attached to the surface of the second sand-filtering sieve tube 24, and a prefabricated liquid inlet notch 34 is formed in the middle of the semicircular connecting plate 32;
one end of the lower drainage plate 33 close to the second sand-filtering sieve tube 24 is connected with a parallel sliding block 35, the outer wall of the second sand-filtering sieve tube 24 is connected with a semicircular positioning patch 37, and magnet type structures which attract each other are arranged in the parallel sliding block 35 and the semicircular positioning patch 37;
the semicircular positioning seat 36 is installed at the top and bottom edges of the semicircular positioning patch 37, the semicircular positioning seat 36 is made of rubber, and the outer walls of the upper drainage plate 31 and the lower drainage plate 33 are provided with a complete annular binding type limiting pull ring 38.
In embodiments 1 to 3, the invention further relates to a control method of the intelligent sand control device for oil well fracturing, wherein the method comprises the following steps of S1: longitudinally installing the sand filtering packer mechanism 1 and the double-layer sand control pipe column mechanism 2 in corresponding oil well holes, and positioning and fixing the first sand filtering sieve pipe 22 by using the coated drainage mechanism 3 and the second sand filtering sieve pipe 24;
s2: when the oil permeates into the inner cavity of the oil containing chamber 26 from the second sand filtering sieve tube 24, the larger sand stays outside the second sand filtering sieve tube 24, the smaller sand stays between the second sand filtering sieve tube 24 and the first sand filtering sieve tube 22 through the second sand filtering sieve tube 24 to form a sand layered state, and finally the oil is extracted through the position of the hollow positioning ring 41;
s3: when the outside fluid velocity of flow of sieve pipe 24 is great for the second sand filtering, partly fluid can pass in prefabricated feed liquor notch 34 from, utilizes the effect of oil hydraulic pressure simultaneously, goes up the angle between drainage plate 31 and the lower drainage plate 33 and can grow, forms obtuse angle's state, and drainage plate 33 slides from top to bottom through parallel slider 35 down, and the velocity of flow as fluid approaches to steady back, goes up drainage plate 31 and lower drainage plate 33 and makes its angle resume to the acute angle state through the effect of the spacing pull ring 38 of constraint type. In this process, the available area for the second screen 24 to penetrate can be increased;
s4: when part of the sand passes through the second sand filtering sieve tube 24 and stays on the outer wall of the first sand filtering sieve tube 22, oil in the inner cavity of the oil containing chamber 26 moves upwards and drives the drainage blade 42 to rotate simultaneously, so that the first sand filtering sieve tube 22 rotates simultaneously, and when the first sand filtering sieve tube 22 rotates, the coated material pushing blade 23 is used for pushing sand-type materials out of the joint of the annular positioning seat 29 and the limiting positioning ring 210, and the sand-type self-cleaning process is completed.
When the oil permeates into the inner cavity of the oil containing chamber 26 from the second sand filtering screen 24, large sand stays outside the second sand filtering screen 24, and small sand passes through the second sand filtering screen 24 and stays between the second sand filtering screen 24 and the first sand filtering screen 22, so that sand is layered, when the oil flow rate outside the second sand filtering screen 24 is high, a part of the oil passes through the prefabricated liquid inlet notch 34, and the angle between the upper drainage plate 31 and the lower drainage plate 33 is increased by the action of the oil hydraulic pressure, so that an obtuse angle is formed, the lower drainage plate 33 slides up and down through the parallel slide blocks 35, and when the oil flow rate approaches a steady state, the angle between the upper drainage plate 31 and the lower drainage plate 33 is restored to an acute angle state through the action of the binding type limiting pull ring 38. In this process, the available area for the second screen 24 to penetrate can be increased;
in addition, when part of the sand and stone passes through the second sand-filtering sieve tube 24 and stays on the outer wall of the first sand-filtering sieve tube 22, the oil in the inner cavity of the oil containing chamber 26 moves upwards and drives the drainage blade 42 to rotate at the same time, so that the first sand-filtering sieve tube 22 rotates at the same time, and when the first sand-filtering sieve tube 22 rotates, the coated material pushing blade 23 is used for pushing sand and stone materials out of the joint of the annular positioning seat 29 and the limiting positioning ring 210, and the process of self-cleaning of the sand and stone is completed;
the oil eventually passes through the position of the hollow positioning ring 41, drawing it.
The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;
secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the invention, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the invention can be combined with each other without conflict;
and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.
Claims (10)
1. The utility model provides an oil well fracturing intelligence sand control device, separates mechanism (1) with packing including the filter sand, its characterized in that: the bottom of the sand filtering packing mechanism (1) is connected with a double-layer sand control tubular column mechanism (2), the outer wall of the double-layer sand control tubular column mechanism (2) is wound with a spiral coating type drainage mechanism (3), the double-layer sand control tubular column mechanism (2) is of a mesh screen pipe structure, and the top of an inner cavity of the sand filtering packing mechanism (1) is connected with a blade type drainage mechanism (4);
the double-layer sand control pipe column mechanism (2) comprises an annular extension sand filtering pipe section (21), the bottom of the annular extension sand filtering pipe section (21) is connected with a first sand filtering screen pipe (22), the bottom of the sand filtering packer mechanism (1) is connected with a second sand filtering screen pipe (24), the second sand filtering screen pipe (24) is sleeved outside the first sand filtering screen pipe (22), and the outer wall of the first sand filtering screen pipe (22) is provided with a coated material pushing blade (23);
vane type drainage mechanism (4) includes cavity form holding ring (41), drainage blade (42) are installed to the outer wall of cavity form holding ring (41), first support location cantilever (43) is installed at the top of drainage blade (42), first support location cantilever (43) fixed connection is at the inner wall of sand filtering with packing mechanism (1), the quantity of first support location cantilever (43) sets up to a plurality ofly, and is a plurality of the one end that first support location cantilever (43) is close to cavity form holding ring (41) is connected with support location ring (44), support location ring (44) rotate to be connected at the outer wall of cavity form holding ring (41), the bottom of drainage blade (42) is provided with second support location cantilever (45), the quantity that second supported location cantilever (45) sets up to a plurality ofly, and is a plurality of the bottom mounting that second supported location cantilever (45) is at the top that the annular extends sand filtering pipe section (21), the top ends of a plurality of second supporting and positioning cantilevers (45) are fixedly arranged on the outer wall of the hollow positioning ring (41);
the first sand-filtering sieve tube (22) is arranged in a frustum structure, the second sand-filtering sieve tube (24) is arranged in a cylindrical structure without a top cover at the lower part, the coated pushing blade (23) is arranged in a spiral structure, and the coated pushing blade (23) is in a solid structure; an image shooting module and an electric drive module are respectively arranged on the drainage blade (42).
2. The intelligent sand control device for oil well fracturing of claim 1, wherein: the sand filtering packing mechanism (1) comprises an annular packer (101), a connection type preset port (102) is formed in the top of the annular packer (101), and an external binding surface (103) is arranged outside the annular packer (101).
3. The intelligent sand control device for oil well fracturing of claim 2, wherein: the annular extends the joint department that screen pipe section (21) and first screen pipe (22) for the sand filtering are connected with arc and link up ring (25), arc links up ring (25) and is the setting of mesh column structure, the cross-section that arc links up ring (25) is the setting of semicircle form.
4. The intelligent sand control device for oil well fracturing of claim 3, wherein: an oil liquid containing chamber (26) is formed in the first sand filtering sieve tube (22), and a sand storage cavity is formed between the first sand filtering sieve tube (22) and the second sand filtering sieve tube (24).
5. The intelligent sand control device for oil well fracturing of claim 4, wherein: the section of the coated pushing blade (23) is arranged in a vertical double-semicircle structure, and the outer edge of the section of the coated pushing blade (23) is provided with a columnar protective edge.
6. The intelligent sand control device for oil well fracturing of claim 5, wherein: the inner wall of cyclic annular packer (101) is equipped with spacing type annular slide rail (27), the inner chamber of spacing type annular slide rail (27) is equipped with annular slider (28), annular slider (28) are connected with the inner chamber rotation of spacing type annular slide rail (27), annular extension sand filtration pipe section (21) fixed mounting is at the inner wall of annular slider (28).
7. The intelligent sand control device for oil well fracturing of claim 6, wherein: the outer wall of the first sand-filtering sieve tube (22) is provided with an annular positioning seat (29), the bottom of the second sand-filtering sieve tube (24) is provided with a limiting positioning ring (210), the limiting positioning ring (210) is attached to the surface of the annular positioning seat (29), and the attaching surfaces of the limiting positioning ring (210) and the annular positioning seat (29) are correspondingly arranged;
and magnet blocks which are mutually attracted are arranged in the limiting positioning ring (210) and the annular positioning seat (29).
8. The intelligent sand control device for oil well fracturing of claim 7, wherein: the supporting type footstock (46) is installed at the top of the hollow positioning ring (41), an arc-shaped limiting turning plate (47) is installed at the top of the supporting type footstock (46), the cross section of the arc-shaped limiting turning plate (47) is arranged in a semicircular shape, and the arc-shaped limiting turning plate (47) is made of rubber materials.
9. The intelligent sand control device for oil well fracturing of claim 8, wherein: the coated drainage mechanism (3) comprises an upper drainage plate (31), the upper drainage plate (31) is fixed on the outer wall of the second sand-filtering sieve tube (24), one end, far away from the second sand-filtering sieve tube (24), of the upper drainage plate (31) is provided with a semicircular connecting plate (32), the upper drainage plate (31) is connected with a lower drainage plate (33) through the semicircular connecting plate (32), the lower drainage plate (33) is attached to the surface of the second sand-filtering sieve tube (24), and the middle of the semicircular connecting plate (32) is provided with a prefabricated liquid inlet notch (34);
one end of the lower drainage plate (33) close to the second sand-filtering sieve tube (24) is connected with a parallel sliding block (35), the outer wall of the second sand-filtering sieve tube (24) is connected with a semicircular positioning patch (37), and magnet type structures which attract each other are arranged in the parallel sliding block (35) and the semicircular positioning patch (37);
semicircle positioning seats (36) are installed at the top and the bottom edge of the semicircle positioning patches (37), the semicircle positioning seats (36) are made of rubber, and the outer walls of the upper drainage plate (31) and the lower drainage plate (33) are provided with complete annular binding type limiting pull rings (38).
10. A method of controlling an intelligent sand control device for well fracturing as claimed in any one of claims 1 to 9, wherein:
s1: longitudinally installing the sand-filtering packing mechanism (1) and the double-layer sand-control pipe column mechanism (2) in corresponding oil well holes, and positioning and fixing the first sand-filtering sieve pipe (22) by utilizing the coated drainage mechanism (3) and the second sand-filtering sieve pipe (24);
s2: when oil permeates into the inner cavity of the oil containing chamber (26) from the second sand filtering sieve tube (24), larger sand can stay outside the second sand filtering sieve tube (24), smaller sand passes through the second sand filtering sieve tube (24) and stays between the second sand filtering sieve tube (24) and the first sand filtering sieve tube (22) to form a sand layering state, and finally the oil passes through the position of the hollow positioning ring (41) to be extracted;
s3: when the flow velocity of oil outside the second sand filtering sieve tube (24) is large, a part of oil can pass through the prefabricated liquid inlet notch (34), the angle between the upper drainage plate (31) and the lower drainage plate (33) can be enlarged under the action of oil pressure to form an obtuse angle state, the lower drainage plate (33) slides up and down through the parallel sliding blocks (35), and when the flow velocity of the oil approaches to be stable, the upper drainage plate (31) and the lower drainage plate (33) enable the angle to be restored to an acute angle state under the action of the constraint type limiting pull ring (38);
s4: when part grit passes second sieve tube (24) for the sand filtration, when stopping at first sieve tube (22) outer wall for the sand filtration, the fluid upward movement of fluid accommodation chamber (26) inner chamber drives drainage blade (42) simultaneously and rotates for first sieve tube (22) for the sand filtration rotate simultaneously, when first sieve tube (22) for the sand filtration is rotatory, utilize cladding formula to push away material blade (23) and push away the laminating department of annular positioning seat (29) and spacing type holding ring (210) with grit type material, accomplish the process of grit self-cleaning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210281292.5A CN114542042A (en) | 2022-03-21 | 2022-03-21 | Intelligent sand control device for oil well fracturing and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210281292.5A CN114542042A (en) | 2022-03-21 | 2022-03-21 | Intelligent sand control device for oil well fracturing and control method |
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| CN114542042A true CN114542042A (en) | 2022-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210281292.5A Withdrawn CN114542042A (en) | 2022-03-21 | 2022-03-21 | Intelligent sand control device for oil well fracturing and control method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11898421B2 (en) * | 2022-04-27 | 2024-02-13 | Southwest Petroleum University | Sand control device for marine hydrate production |
| US11927082B2 (en) | 2019-02-20 | 2024-03-12 | Schlumberger Technology Corporation | Non-metallic compliant sand control screen |
-
2022
- 2022-03-21 CN CN202210281292.5A patent/CN114542042A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11927082B2 (en) | 2019-02-20 | 2024-03-12 | Schlumberger Technology Corporation | Non-metallic compliant sand control screen |
| US11898421B2 (en) * | 2022-04-27 | 2024-02-13 | Southwest Petroleum University | Sand control device for marine hydrate production |
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