CN212417577U - Opposite-flushing type foam generating device - Google Patents
Opposite-flushing type foam generating device Download PDFInfo
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- CN212417577U CN212417577U CN202021482077.4U CN202021482077U CN212417577U CN 212417577 U CN212417577 U CN 212417577U CN 202021482077 U CN202021482077 U CN 202021482077U CN 212417577 U CN212417577 U CN 212417577U
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Abstract
The utility model discloses a hedging formula foam generating device, include to going into pipe (1), collector pipe (2), mistake towards pipe (5), sieve tube (7) and just towards pipe (10), to the input through connection who goes into pipe (1) pipe wall and collector pipe (2), be nitrogen gas and foamer filling opening respectively to going into pipe (1) axial both ends, the input of the wrong pipe (5) that dashes of output connection of collector pipe (2), the input of sieve tube (7) is connected to the output of wrong pipe (5), and the input of just towards pipe (10) is connected to the output of sieve tube (7), wrong pipe (5) and just towards pipe (10) are the radial hedging pore structure of two-stage, and two radial hole axes to punching a hole that stagger mutually of wrong pipe (5), two radial hole axes to punching a hole coincide mutually of just towards pipe (10).
Description
Technical Field
The utility model belongs to the technical field of oil gas well production increase transformation, specifically be a foam generating device that is used for oil well nitrogen gas foam water shutoff production increase especially relates to a hedging formula foam generating device.
Background
The foam has wide application in the field of oil and gas well development, and can be used for low-pressure drilling, fracturing drainage assistance, energy-increasing oil displacement, water shutoff and profile control and the like. The effectiveness of the application of the foam depends mainly on the foam quality, i.e. the abundance and stability of the foam. The abundance and stability of the foam depend on the one hand on the quality of the blowing agent and on the other hand on the foaming function of the foam-generating device. The existing foam generators are mainly of the type of screw (impeller), curved path (winding plate), screen (sieve mesh) and so on, which are also combined with venturi tubes. The foaming principle is that gas and foaming agent are fully mixed, and rich and stable foam is generated under the action of violent collision and turbulence. Therefore, the main function to be achieved by the foam generating device is to increase the degree of mixing uniformity and turbulence as much as possible. Through finite element simulation, the gas-liquid two-phase fluid basically advances in parallel when advancing along the channels of the spiral (impeller), the curved path (winding plate), the screen (screen hole) and the like, and the effects of mutual staggering and turbulent flow are not obvious in the existing structures of the spiral (impeller), the curved path (winding plate), the screen (screen hole) and the like. Although the cavitation and turbulence effects of the Venturi tube are obvious, the Venturi tube only has single-beam fluid turbulence, the mixing and turbulence effects are insufficient, in addition, the Venturi tube is the only fluid channel, the flow resistance is very large, and the mixed discharge capacity cannot meet the requirements.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art not enough, provide an offset foam generating device, overcome among the prior art 1: in the existing structures such as a spiral (impeller), a curved path (winding plate), a screen (screen hole) and the like, when a gas-liquid two-phase fluid advances along the flow channels such as the spiral (impeller), the curved path (winding plate), the screen (screen hole) and the like, the fluid basically advances in parallel, and the fluid is staggered with each other and has no obvious turbulent flow effect; 2: although the cavitation and turbulence effects of the Venturi tube are obvious, the Venturi tube is only disturbed by a single beam of fluid, and the mixing and turbulence effects are insufficient; 3: the Venturi throat is the only fluid channel, the flow resistance is very high, the mixed discharge capacity cannot meet the requirement, and the like.
In order to solve the technical problem, the technical scheme of the utility model is that: the utility model provides a counterpunch formula foam generating device, includes to going into pipe, collector pipe, mistake towards pipe, perforated pipe and positive towards pipe, to going into the input through connection of pipe wall and collector pipe, be nitrogen gas filling opening and foamer filling opening respectively to going into the axial both ends of pipe, the input of mistake towards the pipe is connected to the output of collector pipe, and the input of perforated pipe is connected to the output of mistake towards pipe, and the input of positive towards pipe is connected to the output of perforated pipe, mistake towards pipe and positive towards pipe and be the radial counterpunch pore structure of two-stage, two radial to the hole axis that punches a hole staggers relatively of mistake towards the two radial of mistake towards pipe, two radial to the hole axis coincidence that punches a hole relatively of positive towards pipe.
Preferably, the pipe wall at the middle position in the axial direction of the inlet pipe is vertically welded and communicated with the input end of the collecting pipe, the nitrogen injection port at one end in the axial direction of the inlet pipe is connected with the nitrogen pump truck through a pipeline, and the foaming agent injection port at the other end in the axial direction of the inlet pipe is connected with the foaming agent pump truck through a pipeline.
Preferably, the collecting pipe is formed by connecting two sections of cylindrical pipes in a through manner, an internal thread is arranged on the inner wall of the cylindrical pipe, close to one side of the staggered flushing pipe, of the collecting pipe, the collecting pipe is connected with the staggered flushing pipe through the internal thread, and a sealing ring is arranged at the joint of the collecting pipe and the staggered flushing pipe.
Preferably, the staggered punching cylindrical pipe is formed by connecting four staggered punching cylindrical pipes in a through manner, the four staggered punching cylindrical pipes are a first staggered punching cylindrical pipe, a second staggered punching cylindrical pipe, a third staggered punching cylindrical pipe and a fourth staggered punching cylindrical pipe from left to right, the diameter of each staggered punching cylindrical pipe is gradually increased along the direction far away from the collecting pipe, one end surface, close to the collecting pipe, of the first staggered punching cylindrical pipe is not communicated, one end surface, far away from the collecting pipe, of the first staggered punching cylindrical pipe is communicated with the second staggered punching cylindrical pipe, a plurality of first-level staggered punching holes are radially distributed on the first staggered punching cylindrical pipe, the second staggered punching cylindrical pipe is communicated with the third staggered punching cylindrical pipe, a plurality of second-level staggered punching holes are radially distributed on the second staggered punching cylindrical pipe, an external thread is arranged on the outer wall of the third staggered punching cylindrical pipe, and the external thread of the outer wall of the third staggered punching cylindrical pipe is matched with the internal thread of the collecting pipe, the third-section staggered punching cylindrical pipe is communicated with the fourth-section staggered punching cylindrical pipe, the inner diameter and the outer diameter of the fourth-section staggered punching cylindrical pipe are respectively identical to those of the cylinder manifold close to one side of the staggered punching cylindrical pipe, the inner wall of the fourth-section staggered punching cylindrical pipe close to one side of the sieve hole pipe is provided with internal threads, the fourth-section staggered punching cylindrical pipe of the staggered punching cylindrical pipe is connected with the sieve hole pipe through the internal threads, and a sealing ring is arranged at the joint of the staggered punching cylindrical pipe and the sieve hole pipe.
Preferably, the number of the first-stage staggered punched holes is an even number, the even number of the first-stage staggered punched holes are radially arranged along the circumferential direction of the first-stage staggered punched hole, the hole axes of each group of the radially opposite first-stage staggered punched holes are oppositely deviated by the distance of each half hole diameter, the number of the second-stage staggered punched holes is an even number, the even number of the second-stage staggered punched holes are radially arranged along the circumferential direction of the second-stage staggered punched hole, the hole axes of each group of the radially opposite second-stage staggered punched holes are oppositely deviated by the distance of each half hole diameter, the hole diameter of each second-stage staggered punched hole is larger than that of each first-stage staggered punched hole, and the first-stage staggered punched holes and the second-.
Preferably, the sieve pore pipe is formed by two sections cylinder pipe through connections, and the cylinder pipe diameter that the sieve pore pipe is close to wrong towards pipe one side is little and the outer wall is equipped with the external screw thread, and the external screw thread of sieve pore pipe and the internal thread looks adaptation of wrong towards pipe, the cylinder pipe terminal surface that the sieve pore pipe is close to wrong towards pipe one side is equipped with a plurality of sieve meshes, and the sieve mesh sets up along the axial of sieve pore pipe, the cylinder pipe diameter that the sieve pore pipe kept away from wrong towards pipe one side is big, and the cylinder pipe inner wall that the sieve pore pipe is close to just towards pipe one side is equipped with the internal thread, and the sieve pore pipe passes through the internal thread and just dashes union coupling, and the sieve pore pipe is.
Preferably, the positive punching pipe is formed by connecting four sections of positive punching cylindrical pipes in a through manner, the four sections of positive punching cylindrical pipes are a first section of positive punching cylindrical pipe, a second section of positive punching cylindrical pipe, a third section of positive punching cylindrical pipe and a fourth section of positive punching cylindrical pipe from left to right in sequence, the outer diameters of the first section of positive punching cylindrical pipe, the second section of positive punching cylindrical pipe and the third section of positive punching cylindrical pipe are gradually increased along the direction away from the sieve hole pipe, one end face, close to the sieve hole pipe, of the first section of positive punching cylindrical pipe is not communicated, one end face, far away from the sieve hole pipe, of the first section of positive punching cylindrical pipe is communicated with the second section of positive punching cylindrical pipe, a plurality of first-stage positive punching holes are radially distributed on the first section of positive punching cylindrical pipe, the second section of positive punching cylindrical pipe is communicated with the third section of positive punching cylindrical pipe and has the same inner diameter, a plurality of second-stage positive punching holes are radially distributed on the second section of, the external thread of the outer wall of the third section of the positive punching cylindrical pipe is matched with the internal thread of the sieve hole pipe, the third section of the positive punching cylindrical pipe is communicated with the fourth section of the positive punching cylindrical pipe, the inner diameter of the fourth section of the positive punching cylindrical pipe is the same as that of the third section of the positive punching cylindrical pipe, and the outer diameter of the fourth section of the positive punching cylindrical pipe is gradually reduced along the direction away from the sieve hole pipe.
Preferably, the number of the first-stage positive punched holes is an even number, the even number of the first-stage positive punched holes are radially arranged along the circumferential direction of the first-stage positive punched hole, the axis of each group of the radially opposite first-stage positive punched holes coincides, the number of the second-stage positive punched holes is an even number, the even number of the second-stage positive punched holes are radially arranged along the circumferential direction of the second-stage positive punched hole, the axis of each group of the radially opposite second-stage positive punched holes coincides, the aperture of each second-stage positive punched hole is larger than that of each first-stage positive punched hole, and the first-stage positive punched holes and the second-stage positive punched holes are radially distributed in a.
Compared with the prior art, the utility model has the advantages of:
(1) compared with the traditional spiral (impeller), curved path (winding plate), screen (sieve mesh) and other structures, the utility model is provided with two pairs of punching holes (staggered punching holes and positive punching holes), which generate symmetrical and uniform radial high-speed collision, the mixing uniformity is high, the collision crushing effect is strong, and the fluid self-collision is realized, and the damage to the body is small; the utility model has a plurality of stages of punched holes, and has the advantages of small flow resistance, large adaptive displacement and better mixing and turbulence effects compared with Venturi tubes;
(2) the staggered punching pipe and the forward punching pipe of the utility model are both of two-stage opposite punching hole structures, the two-stage opposite punching holes are distributed in a step shape in the radial direction, and are staggered in phase in the circumferential direction, so that the density field, the speed field and the stress field of fluid flowing in from the outer side and flowing out from the inner side are more balanced, and the mixing and turbulence effects are better;
(3) the two hole axes of each group of the staggered flushing pipes which are opposite in radial direction and have the first-level staggered punching or the second-level staggered punching are staggered by the distance of half of the hole diameter, so that the whole staggered flushing pipe generates a rotational flow effect, and the circumferential mixing effect is improved; the two hole axes of each group of the radially opposite first-stage positive punched holes or second-stage positive punched holes of the positive punching pipe are superposed, so that the collision crushing effect is stronger, and the uniform mixing and turbulent flow cavitation effects are better;
(4) the utility model discloses the mistake dashes to manage and is given first place to evenly mix, and just dashes to manage and use the collision breakage to give first place to, according to foam generating device's mixing vortex target, realizes the homogeneous mixing function earlier, realizes powerful crushing function again, will mistake towards the pipe setting in the front of just dashing the pipe, makes mixing and vortex effect better.
Drawings
FIG. 1 is a schematic structural view of a hedging type foam generating device of the present invention;
FIG. 2 is a schematic cross-sectional view of a first-stage staggered punching hole of a counter-punching type foam generator of the present invention;
FIG. 3 is a schematic cross-sectional view of a second-stage staggered punching hole of the opposed-punching type foam generator of the present invention;
FIG. 4 is a schematic cross-sectional view of a sieve hole tube of the opposed-flushing type foam generator of the present invention;
FIG. 5 is a schematic cross-sectional view of a first-stage positive punching hole of the opposed-punching type foam generator of the present invention;
fig. 6 is a schematic diagram of a second-stage positive punching cross section of the opposite-punching type foam generating device of the present invention.
Description of the reference numerals
1-opposite pipe feeding, 2-collecting pipe, 3-first-level staggered punching, 4-second-level staggered punching, 5-staggered pipe punching, 6-sieve hole, 7-sieve hole pipe, 8-first-level positive punching, 9-second-level positive punching, 10-positive pipe punching and 11-sealing ring.
Detailed Description
The following description of the embodiments of the present invention is provided in connection with the following embodiments:
it should be noted that the structures, ratios, sizes, etc. illustrated in the present specification are only used to cooperate with the contents disclosed in the specification for the understanding and reading of the people skilled in the art, and are not used to limit the limit conditions that the present invention can be implemented, and any modifications of the structures, changes of the ratio relationships or adjustments of the sizes should still fall within the scope that the technical contents disclosed in the present invention can cover without affecting the functions and the achievable purposes of the present invention.
Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
Example 1
As shown in fig. 1, the utility model discloses a hedging formula foam generating device, include to going into pipe 1, collecting pipe 2, mistake towards pipe 5, sieve tube 7 and just towards pipe 10, to going into the input through connection of pipe 1 pipe wall and collecting pipe 2, to going into 1 axial both ends of pipe respectively for nitrogen gas filling opening and foamer filling opening, the input of wrong towards pipe 5 is connected to the output of collecting pipe 2, and the input of sieve tube 7 is connected to the output of wrong towards pipe 5, and the input of just towards pipe 10 is connected to the output of sieve tube 7, wrong towards pipe 5 and just towards pipe 10 and be the radial hedging pore structure of two-stage, and two radial facies that the wrong towards pipe 5 stagger the hole axis that punches a hole, and just towards the hole axis coincidence of two radial facies that punch a hole of pipe 10.
Example 2
Preferably, as shown in fig. 1, a pipe wall at an intermediate position in the axial direction of the inlet pipe 1 is vertically welded to and penetrates an input end of the manifold 2, a nitrogen gas injection port at one end in the axial direction of the inlet pipe 1 is connected to a nitrogen gas pump truck through a pipe, and a foaming agent injection port at the other end in the axial direction of the inlet pipe 1 is connected to the foaming agent pump truck through a pipe.
Preferably, as shown in fig. 1, the collecting pipe 2 is formed by connecting two sections of cylindrical pipes in a through manner, an internal thread is arranged on the inner wall of the cylindrical pipe on one side of the collecting pipe 2 close to the staggered flushing pipe 5, the collecting pipe 2 is connected with the staggered flushing pipe 5 through the internal thread, and a sealing ring 11 is arranged at the joint of the collecting pipe 2 and the staggered flushing pipe 5.
Example 3
Preferably, as shown in fig. 1, the staggered punching pipe 5 is formed by connecting four staggered punching cylindrical pipes in a penetrating manner, the four staggered punching cylindrical pipes are a first staggered punching cylindrical pipe, a second staggered punching cylindrical pipe, a third staggered punching cylindrical pipe and a fourth staggered punching cylindrical pipe sequentially from left to right, the diameter of each staggered punching cylindrical pipe gradually increases along the direction away from the collecting pipe 2, one end surface of the first staggered punching cylindrical pipe, which is close to the collecting pipe 2, is not penetrated, one end surface of the first staggered punching cylindrical pipe, which is far away from the collecting pipe 2, is penetrated through the second staggered punching cylindrical pipe, a plurality of first-stage staggered punching holes 3 are radially distributed on the first staggered punching cylindrical pipe, a plurality of second-stage staggered punching holes 4 are radially distributed on the second staggered punching cylindrical pipe, an external thread is arranged on the outer wall of the third staggered punching cylindrical pipe, and the external thread of the third staggered punching cylindrical pipe is matched with the internal thread of the collecting pipe 2, the third-section staggered punching cylindrical pipe is communicated with the fourth-section staggered punching cylindrical pipe, the inner diameter and the outer diameter of the fourth-section staggered punching cylindrical pipe are respectively identical to those of the confluence pipe 2 close to one side of the staggered punching pipe 5, the inner wall of the fourth-section staggered punching cylindrical pipe close to one side of the sieve hole pipe 7 is provided with internal threads, the fourth-section staggered punching cylindrical pipe of the staggered punching pipe 5 is connected with the sieve hole pipe 7 through the internal threads, and a sealing ring 11 is arranged at the joint of the staggered punching pipe 5 and the sieve hole pipe 7.
Preferably, as shown in fig. 2 and 3, the number of the first-stage staggered punched holes 3 is an even number, the even number of the first-stage staggered punched holes 3 are radially arranged along the circumferential direction of the first-stage staggered punched pipe, the hole axes of each group of the radially opposite first-stage staggered punched holes 3 are oppositely offset by a distance of half each hole diameter, the number of the second-stage staggered punched holes 4 is an even number, the even number of the second-stage staggered punched holes 4 are radially arranged along the circumferential direction of the second-stage staggered punched pipe, the hole axes of each group of the radially opposite second-stage staggered punched holes 4 are oppositely offset by a distance of half each hole diameter, the hole diameter of each second-stage staggered punched hole 4 is larger than the hole diameter of each first-stage staggered punched hole 3, and the first-stage staggered punched holes 3 and.
The radial relative two hole axes of punching a hole of every group staggers certain distance, carries out radial offset when gas-liquid mixture fluid through one-level mistake 3 and second grade mistake 4 that punch a hole and punches a hole, produces the crushing effect of once dispersing, produces the whirl and stirs the effect of mixing, improves circumference and stirs the effect of mixing, reaches even mixing and vortex cavitation effect.
When foam generating device rear pressure is big, the liquid mixed fluid can follow second grade mistake and punch 4 outflow, can make fluid density field, speed field, pressure field more balanced, and mixing and vortex effect are better.
Example 4
Preferably, as shown in fig. 1, the sieve hole tube 7 is formed by connecting two sections of cylindrical tubes through, the diameter of the cylindrical tube on one side of the sieve hole tube 7 close to the staggered punching tube 5 is small, the outer wall of the cylindrical tube is provided with an external thread, the external thread of the sieve hole tube 7 is matched with the internal thread of the staggered punching tube 5, the end face of the cylindrical tube on one side of the sieve hole tube 7 close to the staggered punching tube 5 is provided with a plurality of sieve holes 6, the diameter of the cylindrical tube on one side of the sieve hole tube 7 far away from the staggered punching tube 5 is large, the inner wall of the cylindrical tube on one side of the sieve hole tube 7 close to the forward punching tube 10 is provided with an internal thread, the sieve hole tube 7 is connected with the forward punching tube 10 through the.
Example 5
Preferably, as shown in fig. 1, the positive punching pipe 10 is formed by connecting four sections of positive punching cylindrical pipes in a through manner, the four sections of positive punching cylindrical pipes are a first section of positive punching cylindrical pipe, a second section of positive punching cylindrical pipe, a third section of positive punching cylindrical pipe and a fourth section of positive punching cylindrical pipe in sequence from left to right, the outer diameters of the first section of positive punching cylindrical pipe, the second section of positive punching cylindrical pipe and the third section of positive punching cylindrical pipe are gradually increased along with the direction away from the sieve hole pipe 7, one end face of the first section of positive punching cylindrical pipe, which is close to the sieve hole pipe 7, is not communicated, one end face of the first section of positive punching cylindrical pipe, which is away from the sieve hole pipe 7, is communicated with the second section of positive punching cylindrical pipe, a plurality of first-stage positive punching holes 8 are radially distributed on the first section of positive punching cylindrical pipe, the second section of positive punching cylindrical pipe is communicated with the third section of positive punching cylindrical pipe and has the same inner diameter, a plurality of second-stage positive punching holes 9 are radially, the external thread of the outer wall of the third section of the positive punching cylindrical pipe is matched with the internal thread of the sieve hole pipe 7, the third section of the positive punching cylindrical pipe is communicated with the fourth section of the positive punching cylindrical pipe, the inner diameter of the fourth section of the positive punching cylindrical pipe is the same as that of the third section of the positive punching cylindrical pipe, and the outer diameter of the fourth section of the positive punching cylindrical pipe is gradually reduced along the direction away from the sieve hole pipe 7.
Preferably, as shown in fig. 5 and 6, the number of the first-stage positive punched holes 8 is an even number, the even-numbered first-stage positive punched holes 8 are radially arranged along the circumferential direction of the first-stage positive punched pipe, the hole axes of each group of the first-stage positive punched holes 8 which are diametrically opposite to each other are overlapped, the number of the second-stage positive punched holes 9 is an even number, the even-numbered second-stage positive punched holes 9 are radially arranged along the circumferential direction of the second-stage positive punched pipe, the hole axes of each group of the second-stage positive punched holes 9 which are diametrically opposite to each other are overlapped, the hole diameters of the second-stage positive punched holes 9 are larger than the hole diameters of the first-stage positive punched holes 8, and the first-stage positive.
The axes of two diametrically opposite positive punching holes of each group coincide, and when gas-liquid mixed fluid passes through the primary positive punching hole 8 and the secondary positive punching hole 9, radial opposite punching is carried out, so that three times of dispersing and crushing are generated, the collision and crushing effect is stronger, and the uniform mixing and turbulent flow cavitation effect is better.
When the pressure behind the foam generating device is large, the liquid mixed fluid can flow out from the secondary positive punching hole 9, so that a fluid density field, a velocity field and a pressure field are more balanced, and the mixing and turbulence effects are better.
Example 6
Preferably, as shown in fig. 1, a foam generating method of the opposed foam generating apparatus as described above includes the following steps:
step 1) respectively connecting a nitrogen injection port and a foaming agent injection port at two ends of an opposite inlet pipe 1 with a nitrogen pump truck and a foaming agent pump truck, respectively pumping a gas phase and a liquid phase from two ends of the opposite inlet pipe 1 in a hedging manner, performing primary collision and mixing, and then entering a collecting pipe 2;
step 2) the gas-liquid mixed fluid entering the collecting pipe 2 flows to the staggered flushing pipe 5, the gas-liquid mixed fluid outside the staggered flushing pipe 5 is subjected to radial hedging through the first-stage staggered punching hole 3 and the second-stage staggered punching hole 4, a primary dispersing and crushing effect is generated, and a circumferential rotational flow mixing effect is generated at the same time;
step 3) then the gas-liquid mixed fluid flows to a sieve hole pipe 7 through a staggered flushing pipe 5, and the gas-liquid mixed fluid passes through sieve holes 6 of the sieve hole pipe 7 to generate a secondary dispersion crushing effect;
step 4), the gas-liquid mixed fluid after the secondary dispersion crushing action flows to the positive flushing pipe 10, the gas-liquid mixed fluid on the outer side of the positive flushing pipe 10 passes through the primary positive punching hole 8 and the secondary positive punching hole 9, and radial opposite flushing is carried out for the second time to generate a tertiary dispersion crushing action;
and 5) after three times of dispersion and crushing, forming foam by the gas-liquid mixed fluid, injecting the foam into a shaft of the oil-gas well through an outlet of the positive flushing pipe 10, and performing foam injection operation.
After three times of dispersion and crushing, the gas-liquid mixed fluid is fully mixed and repeatedly crushed, the optimal foaming effect can be achieved, foam is injected into a shaft of an oil-gas well through an outlet of the positive flushing pipe 10, and foam injection operations such as well drilling, fracturing, oil displacement, energy increasing, drainage assisting, water plugging and profile control are carried out.
Although circumferential uniform mixing is realized by the staggered flushing pipes, radial gas-liquid stratification is generated under the action of rotational flow (due to different densities), so that the forward flushing pipes are required to be further uniformly mixed; if the forward flushing pipe is staggered in the front and behind, the forward flushing pipe realizes mixing, but the gas-liquid density difference is large, the collision is not equal, the mixing and flow disturbing effects are not ideal, the staggered flushing pipe does not circumferentially stir and mix, and the gas-liquid stratification caused by the rotational flow of the staggered flushing pipe cannot be processed.
The working principle of the utility model is as follows:
as shown in fig. 1, the utility model discloses an offset type foam generating device, including butt pipe 1, collecting pipe 2, mistake towards pipe 5, sieve pore pipe 7, positive towards pipe 10 and sealing washer 11, butt pipe 1 is welded connection with collecting pipe 2, mistake towards pipe 5, sieve pore pipe 7, positive towards pipe 10 are threaded connection in proper order, mistake towards pipe 5 is two-stage offset hole structure, and the two hole axes of each group radial relative offset hole stagger certain distance, produce whirl mixing effect, improve circumference mixing effect; the sieve pore pipe 7 is in an axial sieve pore 6 structure, the positive punching pipe 5 is also in a two-stage step type radial opposite punching pore structure, the axes of two opposite holes of each group of opposite punching pores in the radial direction are superposed, the collision and crushing effects are stronger, and the uniform mixing and turbulent flow cavitation effects are better;
when in use, two ends of the counter inlet pipe 1 are respectively connected with a nitrogen pump truck and a foaming agent pump truck, and gas-liquid phases are respectively pumped from two ends of the counter inlet pipe 1 in a hedging manner, are subjected to preliminary collision and mixing, and then enter the collecting pipe 2; the gas-liquid mixed fluid entering the collecting pipe 2 flows to the staggered punching pipe 5, the gas-liquid mixed fluid on the outer side of the staggered punching pipe 5 is subjected to radial opposite punching through the first-stage staggered punching hole 3 and the second-stage staggered punching hole 4, a primary dispersion crushing effect is generated, and the effects of uniform mixing and turbulent flow cavitation are achieved; the axes of two holes of each group of radial opposite punched holes are staggered for a certain distance to generate a rotational flow stirring effect and improve the circumferential mixing effect; then the gas-liquid mixed fluid flows to a sieve pore pipe 7 through a staggered flushing pipe 5, and the gas-liquid mixed fluid passes through sieve pores 6 of the sieve pore pipe 7 to generate a secondary dispersion crushing effect; the gas-liquid mixed fluid after the secondary dispersion crushing action flows to the positive punching pipe 10, the gas-liquid mixed fluid on the outer side of the positive punching pipe 10 passes through the primary positive punching hole 8 and the secondary positive punching hole 9, radial opposite punching is carried out for the second time, the three-time dispersion crushing action is generated, the axes of two holes of each group of opposite punching holes which are opposite in the radial direction are superposed, the collision crushing action is stronger, and the uniform mixing and turbulent flow cavitation effects are better; after cubic dispersion crushing effect, gas-liquid mixture fluid has obtained abundant mixing and broken repeatedly, can reach best foaming effect, and the foam is through just dashing the export of pipe 10, pours into the oil gas well pit shaft into, carries out foam injection operations such as well drilling, fracturing, displacement of reservoir oil, energizing help row, water shutoff profile control, through the utility model discloses foam abundance and the stability that dashes formula foam generating device and make are high, satisfy the requirement that the operation was injected into to the big discharge foam of oil gas well.
Compared with the traditional spiral (impeller), curved path (winding plate), screen (sieve mesh) and other structures, the utility model is provided with two pairs of punching holes (staggered punching holes and positive punching holes), which generate symmetrical and uniform radial high-speed collision, the mixing uniformity is high, the collision crushing effect is strong, and the fluid self-collision is realized, and the damage to the body is small; the utility model discloses be multistage, a plurality of to punching a hole, compare in venturi, it is little to have flow resistance, and it is big to adapt to the discharge capacity, the better effect of mixing and vortex effect.
The utility model discloses the mistake is towards the pipe and is two-stage offset hole structure with just towards the pipe, and the two-stage is to radially being the step distribution punching a hole, and the phase is crisscross in circumference, makes the outside flow in with the fluid density field of inboard outflow, speed field, stress field more balanced, and mixing and vortex effect are better.
The two hole axes of each group of the staggered flushing pipes which are opposite in radial direction and have the first-level staggered punching or the second-level staggered punching are staggered by the distance of half of the hole diameter, so that the whole staggered flushing pipe generates a rotational flow effect, and the circumferential mixing effect is improved; the utility model discloses just punching a hole or the two hole axes coincidence that the second grade is just punching a hole just towards the radial relative one-level of pipe every group, the broken effect of collision is stronger, evenly mixes and turbulent flow cavitation effect better.
The utility model discloses the mistake dashes to manage and is given first place to evenly mix, and just dashes to manage and use the collision breakage to give first place to, according to foam generating device's mixing vortex target, realizes the homogeneous mixing function earlier, realizes powerful crushing function again, will mistake towards the pipe setting in the front of just dashing the pipe, makes mixing and vortex effect better.
Although the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Many other changes and modifications can be made without departing from the spirit and scope of the invention. It is to be understood that the invention is not to be limited to the specific embodiments, and that the scope of the invention is defined by the appended claims.
Claims (8)
1. The utility model provides an offset foam generating device which characterized in that: the device comprises a pair of inlet pipes (1), a collecting pipe (2), a staggered punching pipe (5), a sieve hole pipe (7) and a forward punching pipe (10), wherein the pipe wall of the pair of inlet pipes (1) is in through connection with the input end of the collecting pipe (2), the two axial ends of the pair of inlet pipes (1) are respectively provided with a nitrogen injection port and a foaming agent injection port, the output end of the collecting pipe (2) is connected with the input end of the staggered punching pipe (5), the output end of the staggered punching pipe (5) is connected with the input end of the sieve hole pipe (7), the output end of the sieve hole pipe (7) is connected with the input end of the forward punching pipe (10), the staggered punching pipe (5) and the forward punching pipe (10) are of two-stage radial opposite punching hole structures, the two radial opposite punching holes of the staggered punching pipe (5) are staggered, and the two radial opposite punching hole axes of the forward punching pipe (10).
2. The opposed-impact foam generating device as claimed in claim 1, wherein: the pipe wall of the middle position in the axial direction of the opposite inlet pipe (1) is vertically welded and communicated with the input end of the collecting pipe (2), the nitrogen injection port at one end in the axial direction of the opposite inlet pipe (1) is connected with a nitrogen pump truck through a pipeline, and the foaming agent injection port at the other end in the axial direction of the opposite inlet pipe (1) is connected with a foaming agent pump truck through a pipeline.
3. The opposed-impact foam generating device as claimed in claim 1, wherein: the collecting pipe (2) is formed by connecting two sections of cylindrical pipes in a penetrating way, the inner wall of the cylindrical pipe, close to one side of the staggered flushing pipe (5), of the collecting pipe (2) is provided with an internal thread, the collecting pipe (2) is connected with the staggered flushing pipe (5) through the internal thread, and a sealing ring (11) is arranged at the joint of the collecting pipe (2) and the staggered flushing pipe (5).
4. A opposed foam generating apparatus according to claim 3, wherein: the staggered punching cylindrical pipe (5) is formed by connecting four staggered punching cylindrical pipes in a penetrating way, the four staggered punching cylindrical pipes are a first staggered punching cylindrical pipe, a second staggered punching cylindrical pipe, a third staggered punching cylindrical pipe and a fourth staggered punching cylindrical pipe from left to right in sequence, the diameter of each staggered punching cylindrical pipe is gradually increased along the direction far away from the collecting pipe (2), one end face, close to the collecting pipe (2), of the first staggered punching cylindrical pipe is not penetrated, one end face, far away from the collecting pipe (2), of the first staggered punching cylindrical pipe is penetrated with the second staggered punching cylindrical pipe, a plurality of first-stage staggered punching holes (3) are radially distributed on the first staggered punching cylindrical pipe, the second staggered punching cylindrical pipe is penetrated with the third staggered punching cylindrical pipe, a plurality of second-stage staggered punching holes (4) are radially distributed on the second staggered punching cylindrical pipe, an external thread is arranged on the outer wall of the third staggered punching cylindrical pipe, and the external thread on the outer wall of the third staggered punching cylindrical pipe is matched with the internal thread of the collecting pipe (2), the third-section staggered punching cylindrical pipe is communicated with the fourth-section staggered punching cylindrical pipe, the inner diameter and the outer diameter of the fourth-section staggered punching cylindrical pipe are respectively identical to those of the confluence pipe (2) close to one side of the staggered punching pipe (5), the inner wall of the fourth-section staggered punching cylindrical pipe close to one side of the sieve hole pipe (7) is provided with an internal thread, the fourth-section staggered punching cylindrical pipe of the staggered punching pipe (5) is connected with the sieve hole pipe (7) through the internal thread, and a sealing ring (11) is arranged at the joint of the staggered punching pipe (5) and the sieve hole pipe (7).
5. The opposed foam generating apparatus as recited in claim 4, wherein: the number of the first-stage staggered punched holes (3) is an even number, an even number of the first-stage staggered punched holes (3) are radially arranged along the circumferential direction of the first-stage staggered punched hole, the hole axis of each group of the radially opposite first-stage staggered punched holes (3) deviates from the distance of each half hole diameter in opposite directions, the number of the second-stage staggered punched holes (4) is an even number, the even number of the second-stage staggered punched holes (4) are radially arranged along the circumferential direction of the second-stage staggered punched hole, the hole axis of each group of the radially opposite second-stage staggered punched holes (4) deviates from the distance of each half hole diameter in opposite directions, the hole diameter of each second-stage staggered punched hole (4) is larger than the hole diameter of each first-stage staggered punched hole (3), and the first-stage staggered punched holes (3) and the second.
6. The opposed foam generating apparatus as recited in claim 4, wherein: the sieve pore pipe (7) is formed by two sections cylinder pipe through connections, and the cylinder pipe diameter that sieve pore pipe (7) is close to wrong towards pipe (5) one side is little and the outer wall is equipped with the external screw thread, and the external screw thread of sieve pore pipe (7) and the internal thread looks adaptation of wrong towards pipe (5), and the cylinder pipe terminal surface that sieve pore pipe (7) are close to wrong towards pipe (5) one side is equipped with a plurality of sieve meshes (6), and sieve mesh (6) set up along the axial of sieve pore pipe (7), the cylinder pipe diameter that sieve pore pipe (7) kept away from wrong towards pipe (5) one side is big, and sieve pore pipe (7) are close to the cylinder pipe inner wall of just towards pipe (10) one side and are equipped with the internal thread, and sieve pore pipe (7) are connected through internal thread and just towards pipe (10), and sieve pore pipe (7) and just towards pipe (10) junction and be equipped with sealing washer.
7. The opposed foam generating apparatus as recited in claim 6, wherein: the positive punching pipe (10) is formed by connecting four sections of positive punching cylindrical pipes in a through manner, the four sections of positive punching cylindrical pipes are a first section of positive punching cylindrical pipe, a second section of positive punching cylindrical pipe, a third section of positive punching cylindrical pipe and a fourth section of positive punching cylindrical pipe in sequence from left to right, the outer diameters of the first section of positive punching cylindrical pipe, the second section of positive punching cylindrical pipe and the third section of positive punching cylindrical pipe are gradually increased along the direction away from the sieve hole pipe (7), one end face, close to the sieve hole pipe (7), of the first section of positive punching cylindrical pipe is not communicated, one end face, away from the sieve hole pipe (7), of the first section of positive punching cylindrical pipe is communicated with the second section of positive punching cylindrical pipe, a plurality of primary positive punching holes (8) are radially distributed on the first section of positive punching cylindrical pipe, the second section of positive punching cylindrical pipe is communicated with the third section of positive punching cylindrical pipe, the inner diameter of the second section of positive punching cylindrical pipe is the same as that of the third section of positive punching cylindrical pipe, a plurality, the external thread of the outer wall of the third section of the positive punching cylindrical pipe is matched with the internal thread of the sieve hole pipe (7), the third section of the positive punching cylindrical pipe is communicated with the fourth section of the positive punching cylindrical pipe, the inner diameter of the fourth section of the positive punching cylindrical pipe is the same as that of the third section of the positive punching cylindrical pipe, and the outer diameter of the fourth section of the positive punching cylindrical pipe is gradually reduced along the direction far away from the sieve hole pipe (7).
8. The opposed foam generating apparatus as recited in claim 7, wherein: the number of the primary positive punched holes (8) is even, the even number of the primary positive punched holes (8) are radially arranged along the circumferential direction of the first section positive punched cylindrical pipe, the axis of each radial opposite primary positive punched hole (8) in each group is overlapped, the number of the secondary positive punched holes (9) is even, the even number of the secondary positive punched holes (9) are radially arranged along the circumferential direction of the second section positive punched cylindrical pipe, the axis of each radial opposite secondary positive punched hole (9) in each group is overlapped, the aperture of each secondary positive punched hole (9) is larger than that of each primary positive punched hole (8), and the primary positive punched holes (8) and the secondary positive punched holes (9) are radially distributed in a step and are staggered in phase in the circumferential direction.
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| CN202021482077.4U CN212417577U (en) | 2020-07-24 | 2020-07-24 | Opposite-flushing type foam generating device |
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| CN202021482077.4U CN212417577U (en) | 2020-07-24 | 2020-07-24 | Opposite-flushing type foam generating device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111760478A (en) * | 2020-07-24 | 2020-10-13 | 中国石油天然气集团有限公司 | Opposite-impact type foam generating device and foam generating method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111760478A (en) * | 2020-07-24 | 2020-10-13 | 中国石油天然气集团有限公司 | Opposite-impact type foam generating device and foam generating method |
| CN111760478B (en) * | 2020-07-24 | 2024-03-15 | 中国石油天然气集团有限公司 | Opposite-impact foam generating device and foam generating method |
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