CN114737930A - Environment-friendly sand control equipment for filling oil and gas wells - Google Patents
Environment-friendly sand control equipment for filling oil and gas wells Download PDFInfo
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- CN114737930A CN114737930A CN202210418104.9A CN202210418104A CN114737930A CN 114737930 A CN114737930 A CN 114737930A CN 202210418104 A CN202210418104 A CN 202210418104A CN 114737930 A CN114737930 A CN 114737930A
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- 239000004576 sand Substances 0.000 title claims abstract description 105
- 239000002245 particle Substances 0.000 claims abstract description 39
- 230000002265 prevention Effects 0.000 claims abstract description 25
- 239000003129 oil well Substances 0.000 claims abstract description 24
- 238000007789 sealing Methods 0.000 claims abstract description 18
- 238000003756 stirring Methods 0.000 claims abstract description 11
- 239000004575 stone Substances 0.000 claims abstract description 6
- 230000000903 blocking effect Effects 0.000 claims description 19
- 230000005540 biological transmission Effects 0.000 claims description 14
- 238000012856 packing Methods 0.000 claims description 14
- 238000001914 filtration Methods 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 11
- 238000003825 pressing Methods 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims 3
- 230000000149 penetrating effect Effects 0.000 claims 1
- 239000012141 concentrate Substances 0.000 abstract description 2
- 239000011859 microparticle Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000012535 impurity Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000009792 diffusion process Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000010419 fine particle Substances 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- 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
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention discloses an environment-friendly sand control device for filling oil and gas wells, which comprises: the oil well casing is vertically inserted into the open hole section through well; the inner pipe column is coaxially arranged in the oil well casing pipe, and one end of the inner pipe column is communicated with a conveying oil pipe; the sand supply and sealing assembly is arranged below the oil well casing, one end of the sand supply and sealing assembly is communicated with an external sand supply device, and the sand supply and sealing assembly is used for quantitatively filling sand and stone particles at the outer circumference of the conveying oil pipe and forming a sand prevention layer; and the stirring feeding assembly can be sleeved outside the oil conveying pipe and is positioned below the oil well casing pipe in a relative rotating mode, and can perform anti-blocking disturbance on the sand prevention layer and concentrate and discharge the micro particles filtered in the sand prevention layer.
Description
Technical Field
The invention belongs to the technical field of sand prevention equipment for oil and gas wells, and particularly relates to environment-friendly sand prevention equipment for filling of oil and gas wells.
Background
During production in an oil field, sand particles are carried from the formation into the wellbore, which is the production of sand from the oil and gas well. Sand production from oil and gas wells is an important cause of lost production or lying down in oil and gas wells. The hazards caused by sand production from oil and gas wells are collectively referred to as sand damage. The hazards caused by sand production of oil and gas wells mainly comprise: the current filling sand prevention process technology is the most perfect and effective sand prevention process technology, which causes serious abrasion of ground and underground equipment, even causes the sharp increase of maintenance workload of well blocking, sand washing inspection pumps, ground tank cleaning and the like, and causes the production stop due to sand blocking of a sand buried oil layer or a shaft; however, in the long-term use of the filling sand control device in the prior art, the extraction flow of oil liquid is reduced and even a local blockage phenomenon is caused due to the fact that a sand burying layer is subjected to particle substances in the oil liquid; and a large amount of liquid can be leaked into the stratum when the new sandstone layer is filled, and the stratum with lower permeability cannot be polluted by external liquid. Therefore, those skilled in the art have provided an environment-friendly sand control device for filling oil and gas wells to solve the above problems in the background art.
Disclosure of Invention
In order to achieve the purpose, the invention provides the following technical scheme: an environment-friendly oil and gas well packing sand control equipment, it includes:
the oil well casing is vertically inserted into the open hole section through well;
the inner pipe column is coaxially arranged in the oil well casing pipe, and one end of the inner pipe column is communicated with a conveying oil pipe;
the sand supply and sealing assembly is arranged below the oil well casing, one end of the sand supply and sealing assembly is communicated with an external sand supply device and is used for quantitatively filling sand and stone particles at the outer circumference of the conveying oil pipe and forming a sand prevention layer; and
and the stirring and feeding assembly can be sleeved outside the oil conveying pipe in a relative rotating mode and is positioned below the oil well casing pipe, and can perform anti-blocking disturbance on the sand prevention layer and concentrate and discharge the fine particles filtered in the sand prevention layer.
Further, preferably, the sand supply and packing assembly includes:
an inner conveying pipe;
the fixed end piece is coaxially and hermetically fixed below the oil well casing;
the outer filter tube is arranged below the fixed end part, and a plurality of first limiting meshes are arranged on the upper circumference of the outer filter tube;
the inner pipe bodies are circumferentially arranged, each inner pipe body vertically penetrates through the fixed end piece, and one end of each inner pipe body is communicated with the inner conveying pipe;
the mounting inner pipe is coaxially arranged in the outer filter pipe and is positioned outside the oil conveying pipe, one end of the mounting inner pipe is fixed on the fixed end piece in a sealing mode, and a plurality of second limiting meshes are arranged on the mounting inner pipe;
the side guide pipe is connected to one side of the inner conveying pipe; and
the shunt branch pipes are arranged in a circumferential array mode, each shunt branch pipe is vertically fixed to the installation inner pipe, and one end of each shunt branch pipe is communicated with the side guide pipe.
Further, as preferred, the inner conveying pipe can carry out coarse gravel particle filling in the outer filter pipe before the side flow guide pipe, and the side flow guide pipe carries out fine gravel particle filling on the installation inner pipe through the shunt branch pipe after the inner conveying pipe is filled, and the coarse gravel particle size is larger than the aperture of the first limiting mesh and the second limiting mesh.
Further, preferably, the pulse feeding device is arranged in the oil well casing and is used for assisting the side flow guide pipe to fill the sand and stone particles in the installation inner pipe; the pulse feeding device comprises:
sealing the shaft tube;
the airflow bin is arranged in the sealing shaft tube from left to right;
the shaft plug is arranged in one of the airflow bins in a sliding manner, a rotating disc is arranged in the airflow bins in a rotating manner, and the rotating disc is connected with the shaft plug through a support rod;
the telescopic guide rod is vertically fixed in the other airflow bin, and the output end of the telescopic guide rod is vertically fixed with a flow limiting column;
the outer sleeve piece is coaxially arranged in the airflow bin and positioned outside the flow limiting column, the section of the inner wall of the outer sleeve piece is of a trapezoidal structure, and the airflow bins are communicated with one another;
the guide pipe is communicated with the airflow bin and positioned below the outer sleeve piece, and one end of the guide pipe coaxially penetrates through the shunt branch pipe; and
and the drainage members are arranged in a plurality and are vertically connected to the branch flow pipes.
Preferably, a pressing piece is arranged below the shaft plug in the airflow cabin in a sliding mode, and a plurality of supporting springs are arranged below the pressing piece.
Further, preferably, a flow dispersing cover is sleeved outside the flow drainage member, a plurality of branch pipe bodies are further circumferentially arranged on the flow drainage member, an airflow pipe is coaxially communicated with the guide pipe and positioned in the flow drainage member, a flow blocking member is slidably arranged in the airflow pipe, the cross section of the flow blocking member is of an inverted T-shaped structure, and an inner spring is further sleeved on the flow blocking member and positioned in the airflow pipe.
Further, preferably, the agitation feed assembly includes:
the outer ring pipe can be sleeved outside the oil conveying pipe in a relatively rotating manner;
the driving motor is arranged outside the oil conveying pipe, and the output end of the driving motor is communicated with the outer ring pipe through the meshing action of gears;
the two positioning ring bodies are arranged up and down, and each positioning ring body is fixed outside the oil conveying pipe;
the feeding pipe bodies are axially and symmetrically arranged and are fixed through the adapter rod, and the feeding pipe bodies positioned above and below are arranged in the positioning ring body in a sliding manner through the inner clamping seats; and
and the transmission rods are arranged corresponding to the feeding pipe bodies, one end of each transmission rod is vertically and slidably arranged outside the outer ring pipe, and the other end of each transmission rod is connected with the corresponding adapter rod.
Further, preferably, the method further comprises:
the fixed rail piece is coaxially fixed outside the oil conveying pipe;
the connecting body is fixed on the transmission rod, one end of the connecting body is arranged on the fixed rail piece in a sliding mode, and the fixed rail piece is designed into a corrugated rail groove.
Preferably, the feeding pipe body is internally and coaxially provided with a transmission screw piece capable of rotating relatively, a screen pipe piece is fixed outside the feeding pipe body, one side of the feeding pipe body is communicated with an external discharge pipe, and one end of each external discharge pipe is communicated with an external collecting pipe.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the sand control device, the sand supply packing assembly preferentially fills coarse sand particles in the outer filter pipe through the inner conveying pipe by the side guide pipe, and then fine sand particles are filled in the inner installation pipe through the shunt branch pipe after the filling of the inner conveying pipe is completed by the side guide pipe, so that a coarse filter layer and a fine filter layer are formed outside the conveying oil pipe, so that the preferential filtering is performed through the coarse filter layer in the extraction of the oil and gas well, large particle impurities in oil can be retained at the coarse filter layer, small particle impurities can be retained at the fine filter layer, the sand control service life is prolonged, the new sand filling amount is reduced, and the environmental pollution of the oil and gas well is reduced.
2. According to the invention, the stirring feeding assembly can perform internal disturbance on the fine filtering layer in the sand prevention layer after the sand prevention layer is used for a period of time, and particularly, the stirring feeding assembly is also provided with the feeding pipe body, the feeding pipe body can intensively discharge the fine particle impurities filtered in the sand prevention layer downwards, so that the local blockage phenomenon is avoided, and the filtered fine particle impurities are conveyed and discharged to the periphery below the conveying oil pipe through the peripheral collecting pipe, so that the oil well structure layer is reinforced, and the service life of the oil and gas well is prolonged.
3. The sand prevention device is also provided with a pulse feeding device, and the pulse feeding device can fill fine sand particles into the coarse filtering layer in a pulse mode so as to form a gradual change layer at the junction of the coarse filtering layer and the fine filtering layer, further improve the sand prevention effect and reduce the blocking probability.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a sand pack-out assembly according to the present invention;
FIG. 3 is a schematic structural view of a pulse feeding device according to the present invention;
FIG. 4 is a schematic view of the construction of the drainage member of the present invention;
FIG. 5 is a schematic structural view of a feeding tube of the present invention;
FIG. 6 is a schematic structural view of a feeding tube body according to the present invention;
in the figure: 1 oil well casing, 2 inner pipe columns, 3 sand supply and packing assemblies, 31 fixed end parts, 32 inner conveying pipes, 33 outer filter pipes, 34 side guide pipes, 35 inner pipe bodies, 36 installation inner pipes, 37 shunt branch pipes, 4 stirring and feeding assemblies, 41 outer ring pipes, 42 positioning ring bodies, 43 adapter rods, 44 driving motors, 45 fixed rail parts, 46 driving rods, 5 pulse feeding devices, 51 sealing shaft pipes, 52 rotating disks, 53 telescopic guide rods, 54 outer sleeve parts, 55 flow limiting columns, 56 guide pipes, 6 drainage parts, 61 flow dispersing hoods, 62 airflow pipes, 63 branch pipe bodies, 64 flow blocking parts, 65 inner springs, 7 feeding pipe bodies, 71 transmission screw parts, 72 sieve pipe parts and 73 outer discharge pipes.
Detailed Description
Referring to fig. 1, in an embodiment of the present invention, an environment-friendly sand control device for packing oil and gas wells includes:
the oil well casing 1 is vertically inserted into an open hole section through well;
the inner pipe column 2 is coaxially arranged in the oil well casing pipe, and one end of the inner pipe column is communicated with a conveying oil pipe;
the sand supply and sealing assembly 3 is arranged below the oil well casing 1, and one end of the sand supply and sealing assembly 3 is communicated with an external sand supply device (not shown in the figure) and is used for quantitatively filling sand and stone particles at the outer circumference of the conveying oil pipe and forming a sand prevention layer; and
stirring feeding component 4, the cup joint that can rotate relatively is in the conveying oil pipe is located the oil well casing pipe below, stir feeding component 4 can prevent stifled disturbance to the sand control layer to arrange down filterable tiny particle is concentrated in the sand control layer, that is to say, supply sand to seal and pack the subassembly and accomplish the sand control layer and pack and put into use a period back, at this moment, most impurity particle in the fluid has caused local jam to the sand control layer, make fluid take out and extract the flow and reduce, regularly prevent stifled disturbance to the sand control layer through stirring feeding component, with formation new sand control layer, thereby improve sand control layer life, avoid the later stage to fill again and cause environmental pollution.
In this embodiment, the sand supply packing assembly 3 includes:
an inner delivery tube 32; one end of the inner conveying pipe is communicated with an external sand supply device,
a fixed end piece 31 coaxially and hermetically fixed below the oil well casing 1;
the outer filter tube 33 is arranged below the fixed end part 31, and a plurality of first limiting meshes are arranged on the upper circumference of the outer filter tube 33;
a plurality of inner tubes 35 arranged circumferentially, each inner tube 35 vertically penetrates through the fixed end piece 31, and one end of each inner tube 35 is communicated with the inner conveying tube 32; the inner pipe body can convey the sandstone particles in the inner conveying pipe into the outer filter pipe;
the mounting inner pipe 36 is coaxially arranged in the outer filter pipe 33 and is positioned outside the oil conveying pipe, one end of the mounting inner pipe 36 is fixed on the fixed end piece 31 in a sealing mode, and a plurality of second limiting meshes are arranged on the mounting inner pipe 36;
a side guide pipe 34 connected to one side of the inner pipe 32; and
the plurality of branch flow pipes 37 are circumferentially arranged in an array, each branch flow pipe 37 is vertically fixed on the inner installation pipe 36, and one end of each branch flow pipe 37 is communicated with the lateral flow guide pipe 34.
In a preferred embodiment, the inner conveying pipe 32 can fill coarse sand particles in the outer filtering pipe 33 before the side flow guiding pipe 34, and the side flow guiding pipe 34 fills fine sand particles in the installation inner pipe 36 through the flow dividing branch pipe 37 after the inner conveying pipe 32 is filled, wherein the particle size of the coarse sand particles is larger than the pore size of the first limiting mesh and the second limiting mesh, and a flow dividing cylinder is connected to the outside of the external sand supply device and can screen sand particles to form fine sand and coarse sand so as to form a coarse filtering layer and a fine filtering layer outside the conveying oil pipe; compared with the common sand prevention layer, the double-layer sand prevention structure of the coarse filtering layer and the fine filtering layer can effectively avoid the sand prevention layer from being blocked at a high probability, and the service life of the sand prevention layer is prolonged.
In this embodiment, the method further includes: the pulse feeding device 5 is arranged in the oil well casing and is used for assisting the side flow guide pipe 34 to fill sand and stone particles in the installation inner pipe 36; the pulse feeding device 5 includes:
sealing the shaft tube 51;
the airflow bin is arranged in the sealing shaft tube 51 from left to right;
the shaft plug is arranged in one of the airflow chambers in a sliding manner, a rotating disc 52 is arranged in the airflow chambers in a rotating manner, and the rotating disc 52 is connected with the shaft plug through a support rod; one side of each airflow bin is provided with a one-way airflow valve, and when the rotating disc rotates, external air can be pumped and discharged into the other airflow bin through the shaft plug, so that internal flow of airflow is realized;
the telescopic guide rod 53 is vertically fixed in the other airflow bin, and the output end of the telescopic guide rod 53 is vertically fixed with a flow limiting column 55;
the outer sleeve part 54 is coaxially arranged in the airflow bins and positioned outside the flow limiting columns 55, the cross section of the inner wall of the outer sleeve part 54 is of a trapezoidal structure, and the airflow bins are communicated with one another; the flow limiting column can partially block the external member under the stretching of the telescopic guide rod so as to adjust the flow rate of the air flow;
a guide pipe 56 communicated with the airflow cabin and positioned below the outer sleeve 54, wherein one end of the guide pipe 56 is coaxially arranged in the branch pipe 37; and
and a plurality of drainage pieces 6 which are arranged in a row, wherein each drainage piece 6 is vertically connected to the branch pipe 37, and airflow flowing in the airflow bin can be discharged by the drainage pieces in a manner of assisting the diffusion of the sand particles, so that the fine sand particles are filled into the coarse filter layer in a pulse manner, and a gradient layer is formed at the junction of the coarse filter layer and the fine filter layer.
In this embodiment, a pressing member is further slidably disposed below the shaft plug in the airflow chamber, and a plurality of supporting springs 57 are disposed below the pressing member, so that the shaft plug can perform low-flow-rate airflow discharge when the rotating disk rotates at a medium or low speed, and the shaft plug can perform high-flow-rate airflow discharge when the rotating disk rotates at a high speed in general transportation of fine gravel particles.
In this embodiment, a diffuser 61 is sleeved outside the drain member 6, a plurality of branch pipe bodies 63 are further circumferentially arranged on the drain member 6, an airflow pipe 62 is coaxially communicated with the guiding pipe 56 in the drain member, a flow blocking member 64 is slidably arranged in the airflow pipe 62, the cross section of the flow blocking member 64 is of an inverted T-shaped structure, an inner spring 65 is further sleeved on the flow blocking member 64 in the airflow pipe 62, and a plurality of exhaust holes are formed in the flow blocking member, wherein the flow blocking member can block the airflow pipe through an elastic supporting function, when the pulse feeding device generally works, the flow blocking member abuts against the diffuser in a transverse displacement and blocks the front end of the diffuser by the flow blocking member, so that sand particles flowing in the branch pipe bodies are discharged from the diffuser side, and when the pulse feeding device works at a high speed, the flow blocking member blocks the diffuser in the transverse displacement and rapidly resets, thereby realizing the pulse diffusion of sand particles.
As a preferred embodiment, the agitated feed assembly 4 comprises:
an outer ring pipe 41 which is sleeved outside the oil conveying pipe in a relatively rotating manner;
the driving motor 44 is arranged outside the oil conveying pipe, and the output end of the driving motor 44 is communicated with the outer ring pipe 41 through the gear meshing action;
the number of the positioning ring bodies 42 is two, and each positioning ring body 42 is fixed outside the oil conveying pipe;
the feeding pipe bodies 7 are axially and symmetrically arranged, each feeding pipe body 7 is fixed through an adapter rod 43, and each feeding pipe body 7 positioned above and below is arranged in the positioning ring body 44 in a sliding manner through an inner clamping seat; and
and the transmission rods 46 are arranged corresponding to the feeding pipe bodies 7, one end of each transmission rod 46 is vertically and slidably arranged outside the outer ring pipe 41, and the other end of each transmission rod 46 is connected with the adapter rod 43.
In this embodiment, the method further includes:
a fixed rail member 45 coaxially fixed outside the delivery pipe;
the connector is fixed on the transfer line 46, the one end of connector slides and sets up on the fixed rail spare, the fixed rail spare is established to corrugated rail groove, that is to say, when outer ring pipe rotation down this moment the transfer line can slide along the corrugated rail groove of fixed rail spare through the connector to make each pay-off body can carry out vertical relative displacement, improve the disturbance effect.
In this embodiment, a transmission screw 71 is coaxially disposed in the feeding pipe body 7 and can rotate relatively, a screen pipe 72 is fixed outside the feeding pipe body 7, one side of the feeding pipe body 7 is communicated with an external discharge pipe 73, and one end of each external discharge pipe 73 is communicated with an external collecting pipe (not shown in the figure).
Specifically, during filling and sand prevention of an oil and gas well, the inner conveying pipe is used for preferentially filling coarse gravel particles in the outer filter pipe with the side guide flow pipe, then the inner conveying pipe is used for filling fine gravel particles in the installation inner pipe through the shunt branch pipe after the filling of the inner conveying pipe is finished, and when the pulse feeding device works at a high speed after the filling of the fine gravel particles is finished, the flow choking piece chokes the flow of the diffusion cover in the transverse displacement and rapidly resets, so that the pulse diffusion of the gravel particles is realized, a gradient layer is formed at the junction of the coarse filter layer and the fine filter layer, the sand prevention effect is improved, and the blocking probability is reduced; particularly, after the sand control device is used for a period of time, the fine filter layer in the sand control layer can be subjected to internal disturbance through the stirring feeding assembly, and local blockage is avoided.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent substitutions or changes according to the technical solution and the inventive concept of the present invention should be covered by the scope of the present invention.
Claims (9)
1. The utility model provides an environment-friendly oil gas well sand control equipment that fills which characterized in that: it includes:
the oil well casing (1) is vertically inserted into the open hole section through well;
the inner pipe column (2) is coaxially arranged in the oil well casing pipe, and one end of the inner pipe column is communicated with a conveying oil pipe;
the sand supply and sealing assembly (3) is arranged below the oil well casing (1), one end of the sand supply and sealing assembly (3) is communicated with an external sand supply device and is used for quantitatively filling sand and stone particles at the outer circumference of the conveying oil pipe and forming a sand prevention layer; and
the stirring and feeding assembly (4) is sleeved outside the oil conveying pipe and located below the oil well casing pipe in a relatively rotating mode, the stirring and feeding assembly (4) can perform anti-blocking disturbance on the sand prevention layer, and small particles filtered in the sand prevention layer are concentrated and discharged downwards.
2. The environment-friendly oil and gas well packing sand control device of claim 1, wherein: the sand supply pack assembly (3) comprises:
an inner delivery tube (32);
a fixed end piece (31) coaxially and hermetically fixed below the oil well casing (1);
the outer filter tube (33) is arranged below the fixed end piece (31), and a plurality of first limiting meshes are arranged on the upper circumference of the outer filter tube (33);
the inner pipe bodies (35) are circumferentially arranged, each inner pipe body (35) vertically penetrates through the fixed end piece (31), and one end of each inner pipe body (35) is communicated with the inner conveying pipe (32);
the mounting inner pipe (36) is coaxially arranged in the outer filter pipe (33) and is positioned outside the oil conveying pipe, one end of the mounting inner pipe (36) is fixed on the fixed end piece (31) in a sealing mode, and a plurality of second limiting meshes are arranged on the mounting inner pipe (36);
the side guide pipe (34) is connected to one side of the inner conveying pipe (32); and
the flow dividing branch pipes (37) are arranged in a circumferential array mode, each flow dividing branch pipe (37) is vertically fixed to the installation inner pipe (36), and one end of each flow dividing branch pipe (37) is communicated with the side flow guiding pipe (34).
3. The environment-friendly oil and gas well packing sand control device of claim 2, wherein: the inner conveying pipe (32) can fill coarse gravel particles in the outer filtering pipe (33) before the side guide pipe (34), the side guide pipe (34) fills fine gravel particles in the inner mounting pipe (36) through the branch flow pipe (37) after the inner conveying pipe (32) is filled, and the particle size of the coarse gravel particles is larger than the aperture of the first limiting mesh and the second limiting mesh.
4. The environment-friendly oil and gas well packing sand control device of claim 2, wherein: further comprising: the pulse feeding device (5) is arranged in the oil well casing and is used for assisting the side draft tube (34) to fill sand particles in the installation inner tube (36); the pulse feeding device (5) comprises:
a sealed shaft tube (51);
the air flow bin is arranged in the sealing shaft tube (51) from left to right;
the shaft plug is arranged in one of the airflow chambers in a sliding manner, a rotating disc (52) is arranged in the airflow chambers in a rotating manner, and the rotating disc (52) is connected with the shaft plug through a support rod;
the telescopic guide rod (53) is vertically fixed in the other airflow bin, and the output end of the telescopic guide rod (53) is vertically fixed with a flow limiting column (55);
the outer sleeve part (54) is coaxially arranged in the airflow bin and positioned outside the flow limiting column (55), the section of the inner wall of the outer sleeve part (54) is of a trapezoidal structure, and the airflow bins are communicated with one another;
the guide pipe (56) is communicated with the airflow bin and positioned below the outer sleeve piece (54), and one end of the guide pipe (56) is coaxially arranged in the branch pipe (37) in a penetrating way; and
and a plurality of drainage members (6) are arranged in an array, and each drainage member (6) is vertically connected to the branch flow pipe (37).
5. The environment-friendly oil and gas well packing sand control device of claim 4, wherein: a pressing piece is arranged below the shaft plug in the airflow bin in a sliding mode, and a plurality of supporting springs (57) are arranged below the pressing piece.
6. The environment-friendly oil and gas well packing sand control device of claim 4, which is characterized in that: the flow discharging piece (6) is sleeved with a flow dispersing cover (61), the flow discharging piece (6) is further circumferentially provided with a plurality of branch pipe bodies (63), the guide pipe (56) is coaxially communicated with an airflow pipe (62) in the flow discharging piece, a flow blocking piece (64) is arranged in the airflow pipe (62) in a sliding mode, the cross section of the flow blocking piece (64) is of an inverted T-shaped structure, and the flow blocking piece (64) is further sleeved with an inner spring (65) in the airflow pipe (62).
7. The environment-friendly oil and gas well packing sand control device of claim 1, wherein: the churning feed assembly (4) comprises:
an outer ring pipe (41) which is sleeved outside the oil conveying pipe in a relatively rotating way;
the driving motor (44) is arranged outside the oil conveying pipe, and the output end of the driving motor (44) is communicated with the outer ring pipe (41) through the meshing action of gears;
the number of the positioning ring bodies (42) is two, and each positioning ring body (42) is fixed outside the oil conveying pipe;
the feeding pipe bodies (7) are axially symmetrically arranged, each feeding pipe body (7) is fixed through an adapter rod (43), and the feeding pipe bodies (7) positioned at the upper part and the lower part are arranged in the positioning ring body (44) in a sliding manner through inner clamping seats; and
and the transmission rods (46) are arranged corresponding to the feeding pipe bodies (7), one ends of the transmission rods (46) are vertically and slidably arranged outside the outer ring pipes (41), and the other ends of the transmission rods (46) are connected with the adapter rods (43).
8. The environment-friendly oil and gas well packing sand control device of claim 7, which is characterized in that: further comprising:
the fixed rail piece (45) is coaxially fixed outside the oil conveying pipe;
the connecting body is fixed on the transmission rod (46), one end of the fixed rail piece (45) is arranged on the connecting body in a sliding mode, and the fixed rail piece (45) is arranged to be a corrugated rail groove.
9. The environment-friendly oil and gas well packing sand control device of claim 7, wherein: the conveying device is characterized in that a conveying screw piece (71) is coaxially arranged in the feeding pipe body (7) in a relatively rotatable mode, a screen pipe piece (72) is fixed outside the feeding pipe body (7), one side of the feeding pipe body (7) is communicated with an outer discharge pipe (73), and one end of each outer discharge pipe (73) is communicated with an external collecting pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210418104.9A CN114737930B (en) | 2022-04-20 | 2022-04-20 | Environment-friendly oil-gas well filling sand prevention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210418104.9A CN114737930B (en) | 2022-04-20 | 2022-04-20 | Environment-friendly oil-gas well filling sand prevention device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114737930A true CN114737930A (en) | 2022-07-12 |
| CN114737930B CN114737930B (en) | 2024-03-26 |
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| CN202210418104.9A Active CN114737930B (en) | 2022-04-20 | 2022-04-20 | Environment-friendly oil-gas well filling sand prevention device |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030000702A1 (en) * | 2001-06-28 | 2003-01-02 | Streich Steven G. | Apparatus and method for sequentially packing an interval of a wellbore |
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