CN112761595A - Sand prevention tool for layered oil production with electromagnetic switch - Google Patents
Sand prevention tool for layered oil production with electromagnetic switch Download PDFInfo
- Publication number
- CN112761595A CN112761595A CN201910998999.6A CN201910998999A CN112761595A CN 112761595 A CN112761595 A CN 112761595A CN 201910998999 A CN201910998999 A CN 201910998999A CN 112761595 A CN112761595 A CN 112761595A
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- electromagnetic
- hole
- sliding sleeve
- electromagnetic switch
- armature sliding
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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
- E21B43/14—Obtaining from a multiple-zone well
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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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/122—Multiple string packers
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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 a sand prevention tool for layered oil extraction with an electromagnetic switch. The method mainly solves the problems of interlayer interference and sand production of oil wells in multi-layer combined production of vertical wells and inclined wells, realizes underground layered oil production under ground control, and can also be applied to horizontal wells for water exploration and water shutoff operations. The lower part of the oil pipe column is connected in series with a sand filtering pipe with an electromagnetic switch corresponding to each oil layer in the well, and each layer is separated by a cable packer. The action of the electromagnetic switch is controlled by the multi-core cable on the ground, and the inflow channel of any level of sand filtering pipe can be opened or closed, so that the purpose of producing or plugging a certain oil layer is achieved. The electromagnetic switch mainly comprises an electromagnetic coil, an electromagnetic armature slideway, a compression reset spring and a fixed track pin, when the electromagnetic coil of a certain level of sand screen is electrified, the electromagnetic coil drives the armature slideway to act and rotate by a fixed angle, so that the through hole of the electromagnetic armature sliding sleeve is aligned with or staggered with the through hole of the central pipe, and the purpose of opening or closing is achieved.
Description
Technical Field
The invention relates to an oil extraction sand prevention tool in the field of petroleum drilling, in particular to a layered oil extraction sand prevention tool with an electromagnetic switch.
Background
In the later development stage of the oil field, the problems of high water content, loose rock skeleton and outstanding interlayer contradiction appear in the stratum. The problems of water and sand production of oil wells are increasingly serious, and interlayer interference obviously inhibits the single-well productivity. In order to realize normal production of the oil well, comprehensive technical measures of sand prevention and interlayer interference prevention of the oil well are required.
A direct-control continuous quantitative layered production allocation tubing string is disclosed in the Chinese patent specification with the publication number of CN 102418500B. The direct-control continuous quantitative layered production allocation tubing string comprises a controllable fixed valve oil pump, a hydraulic tubing anchor, a sliding sleeve oil drain device and a porous concentric integrated continuous quantitative production allocation device. The lower part of the tubing string is sequentially connected in series with an oil pump capable of washing a controllable fixed valve, a hydraulic tubing anchor through which a cable can pass from the outer wall, a sliding sleeve oil drain capable of communicating the inside of the tubing with the inside of a sleeve, and more than 1 porous concentric integrated continuous quantitative production allocator capable of controlling opening and closing of a stratum and testing the pressure of the stratum. The oil well pump comprises a pump cylinder, an upper joint, an outer cylinder and a lower joint. The lower extreme of a pump section of thick bamboo is connected with the top connection, be connected with the urceolus under the top connection, be connected with the ball cover under the urceolus, the top has put rotary positioner in the urceolus, rotary positioner has M shape spout outward, fixed pin inner is arranged in the spout on the urceolus wall, the planar bearing has been put respectively to urceolus internal rotation positioner upper and lower end, be connected with the sliding sleeve on the planar bearing of lower extreme, be connected with the telescopic link under the sliding sleeve, the telescopic link lower extreme has the valve ball, the valve ball seat has been put between the ball cover that corresponds and the bottom connection, the urceolus embeds there is the orifice plate lower extreme of sliding sleeve, reset spring has been put between orifice plate and.
The hydraulic tubing anchor comprises a cylinder body and a slip cover, wherein a cable passing groove is axially arranged outside the cylinder body and the slip cover. The sliding sleeve bleeder comprises an upper body, an oil drainage lower joint, a piston shearing sleeve and an overflowing baffle, wherein the oil drainage lower joint is connected to the lower end of the upper body, the overflowing baffle is fixed in the upper part of the upper body, the piston shearing sleeve is connected to the upper body through a pin, and an oil drainage hole is formed in the wall of the middle part of the upper body. The multi-hole concentric integrated continuous quantitative production allocator comprises an upper threaded sleeve, a central pipe, a long joint, an intermediate joint and a lower threaded sleeve, wherein the upper threaded sleeve, the central pipe, the long joint, the intermediate joint and the lower threaded sleeve are sequentially connected, a setting rubber cylinder and a spacer ring are arranged at the upper part outside the central pipe, a lock ring seat is connected outside the spacer ring and below the central pipe through a deblocking pin, a snap ring with a clamping tooth is arranged inside a groove outside the lock ring seat, a production allocation outer cylinder is connected onto the long joint outside the central pipe through a shear pin, the clamping tooth is arranged at the upper end of the production allocation outer cylinder, a piston is arranged below a step of the production allocation outer cylinder in a closed cavity between the central pipe and the production allocation outer cylinder, a liquid passing hole communicated with the lower end of the closed cavity is formed in the central pipe, a valve body is fixed in the intermediate joint, a current layer liquid inlet hole is formed in the valve body in the radial direction, a bridge type channel is, the valve body is axially connected with a pressure sensor and communicated with a liquid inlet hole of the current layer, and the pressure sensor is connected with a circuit on a circuit board in the protective cylinder through a lead. The telescopic compensator capable of eliminating the vertical movement of the pipe column is connected in series on the pipe column between the oil well pump and the hydraulic oil pipe anchor in the scheme. The telescopic compensator comprises a compensation upper joint, a compensation lower joint, an upper variable buckle coupling, an outer cylinder and an upper inner cylinder, wherein the compensation upper joint is connected with the upper inner cylinder through the upper variable buckle coupling, the upper inner cylinder is externally provided with the outer cylinder, the lower end of the outer cylinder is in vertical sliding connection with a lower variable buckle short circuit, the lower variable buckle short circuit is connected with the compensation lower joint through the short circuit, the lower inner cylinder is in vertical sliding connection in the lower end of the upper inner cylinder, the inner end of a pin in the middle of the outer cylinder is arranged in a lower inner cylinder axial groove, the upper end of the upper inner cylinder and the lower end of the lower inner cylinder are connected with an upper wire passing device and a.
The direct-control continuous quantitative layered production allocation tubing string can freely control switches of all layers on the ground to perform layered oil extraction, and directly read layered test pressure, but the tubing string does not have a sand prevention function.
The invention discloses a horizontal well sound control differential pressure balanced switch device which is disclosed in the Chinese patent specification with the publication number of CN102758600B and mainly comprises a horizontal well differential pressure balanced switch valve, an oil sleeve buckle changing joint, a locking nut, a liquid inlet base, a sleeve buckle changing coupling, an oil pipe, a driving assembly, a direct current servo motor unit, a motor control circuit, a wire passing sealing joint, an oil bremsstral coupling assembly, a righting ring, a motor power supply battery pack, a sound wave receiving decoder power supply battery pack and a polyurethane hydrophone. The horizontal well sound control differential pressure balanced switch device is divided into a motor driving device, a differential pressure balanced switch valve and a formation fluid channel. Wherein:
the motor driving device mainly comprises a rolling rod support, a cross countersunk head screw, a connecting nut, a line supporting frame, a high-temperature travel switch, a set screw, a bearing seat, a steel ball, a ball screw, a plane bearing, a check ring, a motor unit seat, a coupling, a key and a push-pull plate. Three holes with the diameter of 2.5 mm are evenly distributed on a cylindrical boss with the diameter of 15 mm at the lower end of the main ball support, an M14 internal thread is arranged on a cylinder at the upper end, 18 mm cylinders are reserved at the upper end and the lower end, the length of the cylinder is cut along the radial direction in parallel and is 219 mm in an I shape, milling a wire passing groove with the width of 3 mm and the depth of 2.2 mm on the cambered surface, axially forming holes with the diameter of 12 mm at the upper end and the lower end respectively, installing a ball screw into a rolling rod bracket, two ends of a 219 mm I shape are respectively provided with a wire passing bracket and a high-temperature travel switch, the lead of the high-temperature travel switch is led out through a wire passing groove by passing a supporting wire frame, two sides of the I shape are respectively provided with a push-pull plate which is screwed tightly and connected with a nut fastening nut, a plane bearing is arranged in an inner hole with the diameter of 12 mm at the upper end of the rolling bar support, then a check ring is arranged in the inner hole, one end of the cylindrical coupling with the key groove is connected through a key, and an external thread M14 at the other end of the coupling is connected with an internal thread of the cylindrical motor base. The central shaft of the motor unit and the central shaft of the ball screw convert the radial rotation motion into axial motion through the coupling, drive the push-pull plate to move axially upwards or downwards, and when the upward or downward displacement reaches a limited position, the high-temperature travel switch automatically limits the position, so that the motor unit is protected from stalling. The differential pressure balanced switch valve mainly comprises a guide cone, a lower sealing joint, a lower connecting sleeve, a lower dynamic sealing device, a liquid passing joint, a push-pull rod, a piston, an upper dynamic sealing device, an upper connecting sleeve and an upper sealing head. The end surface of the lower end of the cylindrical guide cone is a cross groove, and the internal thread of the sealing surface of the upper end of the guide cone is connected with the external thread of the sealing surface of the cylindrical lower sealing joint; the lower sealing joint is provided with a central hole, the upper end of the lower sealing joint is provided with a sealing surface external thread and a boss, a sealing surface is arranged in the boss, and the upper end of the lower sealing joint is in threaded connection with a hollow cylindrical lower connecting sleeve; the upper end of the lower connecting sleeve is provided with internal threads, the lower connecting sleeve is radially provided with a pressure difference balance hole, the upper end of the lower connecting sleeve is in threaded connection with a hollow cylindrical liquid passing joint, the lower end wall of the liquid passing joint is radially and uniformly provided with 12 rows of liquid outlet holes, and the wall of the liquid passing joint is provided with a radial liquid inlet groove; two ends of the liquid inlet groove are respectively provided with two sealing grooves, the upper end of the liquid passing joint is provided with an external thread, the upper end of the liquid passing joint is in threaded connection with a hollow cylindrical upper connecting sleeve, the upper end of the upper connecting sleeve is provided with an internal thread and is radially provided with a pressure difference balancing hole, and the upper end of the upper connecting sleeve is in threaded connection with an upper sealing head; the method is characterized in that: an upper dynamic sealing device is fixed in the upper connecting sleeve and at the lower end of the upper sealing head, and the upper ends of the push-pull rod and the piston penetrate through the upper dynamic sealing device; a lower movable sealing device is fixed in the lower connecting sleeve and at the upper end of the lower sealing joint; the lower ends of the push-pull rod and the piston penetrate through the lower dynamic sealing device and the central hole at the upper end of the lower sealing joint; the piston is of a double-piston structure, the diameter of an upper piston at the upper end of the piston is the same as that of a central hole at the upper part of the liquid passing joint, the diameter of a lower piston at the lower end of the piston is the same as that of a central hole at the lower part of the liquid passing joint, and an annular groove is formed in the outer wall of the middle part of the piston; the upper piston is arranged in a central hole at the upper part of the liquid passing joint; the lower piston is arranged in a central hole at the lower part of the liquid passing joint, and slides on the upper side and the lower side of a transverse liquid inlet hole on the lower end wall of the liquid passing joint when the push-pull rod and the piston reciprocate up and down. The formation fluid channel mainly comprises an oil sleeve buckle changing joint, a locking nut, a liquid inlet base, a buckle changing coupling and an oil pipe. The oil sleeve buckle changing joint is a cylinder, the lower end of the oil sleeve buckle changing joint is 21/2 'flat type oil pipe external threads, the 3' flat type oil pipe internal threads at the upper end of the oil sleeve buckle changing joint are connected with the liquid inlet base, the two ends of the liquid inlet base are 3 'flat type oil pipe external threads, the middle of the liquid inlet base is provided with a liquid inlet groove in the radial direction, the liquid inlet groove is communicated with the central hole, three fan-shaped through holes are axially arranged along the central hole, the other end of the liquid inlet groove is connected with the 3' flat type oil pipe internal threads of the buckle changing coupling, and 21/2. When the switch bears 20Mpa pressure difference in the underground, formation liquid flows in through a radial long slotted hole on the liquid inlet base, enters into small holes with millimeter diameters on the connecting sleeve and the upper connecting sleeve by taking three axial inner holes of the liquid inlet base as channels, enters into the switch valve, bears 20Mpa pressure of the setting packer, balances radial pressure difference on the piston, and slides downwards or downwards to be completely opened or closed. The horizontal well differential pressure balanced type switch valve is connected with a driving assembly, the driving assembly is connected with a high-temperature direct current servo motor unit, a lead of the motor unit is connected to a motor control circuit, a power supply lead signal wire of the motor control circuit passes through a sealing joint and is connected with a motor power supply battery pack through an oil and bremsstral coupling assembly, the motor power supply battery pack passes through the oil and bremsstral coupling assembly and is connected with a receiving and decoding circuit power supply battery pack, and the oil and bremsstral coupling assembly is connected with a hydrophone in a sealing. The underground switch is controlled by adopting ground transmitting sound waves, but the underground switch has a complex structure, the sound wave receiving system is easy to be interfered, the reliability is lower, and the underground self-contained battery can consume and collapse along with the prolonging of time, so that the signal processing system and the switch actuating mechanism lose the effect due to the insufficient power.
Disclosure of Invention
The invention aims to comprehensively treat the problems of interlayer interference and sand production of an oil well, and provides a layered oil production sand prevention tool with an electromagnetic switch, which can directly control the on-off state of an underground sand filter pipe on the ground, realize normal production or plugging aiming at each layer and further realize selective exploitation of multiple oil layers.
In order to solve the technical problems, the invention is realized by adopting the following technical scheme:
a sand control tool for layered oil production with an electromagnetic switch mainly comprises a central tube with a hole, an electromagnetic armature sliding sleeve, an electromagnetic switch outer sleeve, a compression reset spring, an electromagnetic coil, a fixed track pin, a sand filtering tube assembly, a lower connector and a multi-core cable; wherein:
the perforated central tube is a tubular body, the upper part of the perforated central tube is provided with a convex shoulder, and the middle lower part of the perforated central tube is provided with a group of through holes A which are uniformly distributed around the axis;
the electromagnetic switch is sleeved with a tubular body, the upper part of the electromagnetic switch is fixedly connected with a convex shoulder of the central tube with the hole, the lower part of the electromagnetic switch is provided with a track pin screw hole, and the fixed track pin is connected and matched with the track pin screw hole;
the electromagnetic armature sliding sleeve is a tubular body, the upper part of the electromagnetic armature sliding sleeve is fixedly connected with an armature sliding sleeve top cap, the inner wall of the electromagnetic armature sliding sleeve is in axial sliding and rotating fit with the outer wall of the perforated central pipe, a continuous W-shaped transposition track is circumferentially arranged at the middle lower part of the electromagnetic armature sliding sleeve, the transposition track and a fixed track pin protruding from an electromagnetic switch outer sleeve form limiting sliding and rotating fit, and a through hole B matched with a rotary switch of a through hole A of the perforated central pipe is arranged on the electromagnetic armature sliding sleeve below the transposition track;
the compression reset spring and the electromagnetic coil are vertically arranged in an annular space formed by the electromagnetic armature sliding sleeve and the electromagnetic switch outer sleeve, and the electromagnetic armature sliding sleeve is driven to move downwards under the action of the electromagnetic force of the electromagnetic coil and the armature sliding sleeve top cap;
the lower joint is connected to the lower end part of the central tube with the hole;
the sand filtering pipe assembly is connected between the electromagnetic switch outer sleeve and the lower connector;
the multi-core cable is arranged on the outer sleeve wall of the electromagnetic switch and is connected with the electromagnetic coil.
The above scheme further comprises:
the through holes A of the central tube with the holes and the through holes B on the electromagnetic armature sliding sleeve are strip holes, the number of the through holes is equal to that of the through holes, and included angles among the through holes are mutually degrees; the through hole B of the electromagnetic armature sliding sleeve and the through hole A of the perforated central pipe are staggered in a closed state, when the through hole B of the electromagnetic armature sliding sleeve rotates by an angle, the through hole B of the electromagnetic armature sliding sleeve and the through hole A of the perforated central pipe are aligned, and the electromagnetic switch opens a channel; meanwhile, the middle lower part of the electromagnetic armature sliding sleeve is circumferentially provided with a continuous W-shaped transposition track which is matched with the fixed track pin in a limiting sliding and rotating way to simultaneously rotate when an up-down dead point and a down-down dead point are met.
The convex shoulder part of the central tube with the hole is provided with a positioning pin screw hole, the upper part of the electromagnetic switch outer sleeve is provided with a positioning pin through hole, and the positioning pin screw hole and the positioning pin through hole are positioned and fixed through a positioning pin.
A through cable hole A and a through cable hole B are respectively formed in the shoulder part of the central tube with the hole and the outer wall of the electromagnetic switch outer sleeve, and the through cable hole A and the through cable hole B are kept on the same axis after the positioning pin is positioned and fixed.
The lower part of the electromagnetic switch outer sleeve is provided with a pair of rail pin screw holes which are symmetrically arranged.
And a multi-core cable upper connector seat is arranged on the cable through hole A of the convex shoulder part of the central tube with the hole.
The pipe fitting further comprises an upper joint, and the upper joint is in threaded connection with the perforated center pipe.
The electromagnetic armature sliding sleeve is connected with the armature sliding sleeve top cap through threads.
And the lower part of the sand screen pipe assembly is connected with the lower joint through threads.
Compared with the prior art, the invention has the advantages that: (1) the opening or closing state of the underground sand screen can be directly controlled on the ground, and normal production or plugging aiming at each layer can be realized, so that selective exploitation of multiple oil layers can be realized. (2) The invention achieves the purposes of water exploration and water shutoff through the opening or closing operation of the sand filtering pipes connected in series, and ensures the effective and reasonable exploitation of horizontal well intervals. (3) Overall structure is simple, operational reliability is high, and the drift diameter of center tube is equal to the tubular column internal diameter, does not influence oil well later stage operation.
Drawings
FIG. 1 is a schematic diagram of one embodiment of a layered sand control tool with an electromagnetic switch for layered sand control production in a well according to the present invention;
FIG. 2 is a schematic structural diagram of a layered oil production sand control tool with an electromagnetic switch according to the present invention;
FIG. 3 is a schematic structural view of the perforated center tube of FIG. 2;
FIG. 4 is a schematic structural view of the casing of the electromagnetic switch of FIG. 2;
FIG. 5 is a schematic structural diagram of the solenoid armature sliding sleeve in FIG. 2;
FIG. 6 is a schematic view of the tool switch state of FIG. 2 in the "off" state;
FIG. 7 is a schematic view of the tool switch state of FIG. 2 in an "on" state;
FIG. 8 is a schematic view of an embodiment of the present invention performing water exploration and water shutoff in a horizontal well.
The labels in the figure are: 1. the device comprises an upper joint, 2, a perforated center pipe, 3, a cable joint seat, 4, an armature sliding sleeve top cap, 5, an electromagnetic armature sliding sleeve, 6, an electromagnetic switch outer sleeve, 7, a compression reset spring, 8, an electromagnetic coil, 9, a positioning pin, 10, a fixed track pin, 11, a sand filter pipe assembly, 12, a lower joint, 20, a drill rod, 21, a positioning pin screw hole, 22, an over-cable through hole A, 23, a through hole A, 30, a multi-core cable, 40, an electromagnetic switch, 50, a packer, 51, a transposition track, 52, a through hole B, 61, a positioning pin through hole, 62, an over-cable through hole B, 63 and a track pin screw hole.
Detailed Description
The invention is described in further detail below with reference to the figures and the detailed description.
Example 1
Referring to the attached drawings 2-7, the layered oil production sand prevention tool with the electromagnetic switch mainly comprises a perforated central pipe 2, an electromagnetic armature sliding sleeve 5, an electromagnetic switch outer sleeve 6, a compression return spring 7, an electromagnetic coil 8, a fixed track pin 10, a sand filtering pipe assembly 11, a lower connector 12 and a multi-core cable 30; wherein:
the perforated central tube 2 is a tubular body, the upper part of the perforated central tube is provided with a convex shoulder, and the middle lower part of the perforated central tube is provided with a group of through holes A23 which are uniformly distributed around the axis;
the electromagnetic switch outer sleeve 6 is a tubular body, the upper part of the electromagnetic switch outer sleeve is fixedly connected with a convex shoulder of the central tube 2 with the hole, the lower part of the electromagnetic switch outer sleeve is provided with a track pin screw hole 63, and the fixed track pin 10 is connected and matched with the track pin screw hole 63;
the electromagnetic armature sliding sleeve 5 is a tubular body, the upper part of the electromagnetic armature sliding sleeve 5 is fixedly connected with the armature sliding sleeve top cap 4, the inner wall of the electromagnetic armature sliding sleeve 5 is in axial sliding and rotating fit with the outer wall of the perforated center pipe 2, a continuous W-shaped transposition track 51 is circumferentially arranged at the middle lower part of the electromagnetic armature sliding sleeve 5, the transposition track 51 and a fixed track pin 10 protruding from the electromagnetic switch outer sleeve 6 form limiting sliding and rotating fit, and the electromagnetic armature sliding sleeve 5 below the transposition track 51 is provided with a through hole B52 matched with a through hole A23 of the perforated center pipe 2 in a rotating way;
the compression reset spring 7 and the electromagnetic coil 8 are vertically arranged in an annular space formed by the electromagnetic armature sliding sleeve 5 and the electromagnetic switch outer sleeve 6, and the electromagnetic armature sliding sleeve 5 is driven to move downwards under the action of the electromagnetic force of the electromagnetic coil 8 and the armature sliding sleeve top cap 4;
the lower joint 12 is connected to the lower end part of the perforated central pipe 2;
the sand filtering pipe assembly 11 is connected between the electromagnetic switch outer sleeve 6 and the lower connector 12;
the multi-core cable 30 is arranged on the wall of the electromagnetic switch outer sleeve 6 and is connected with the electromagnetic coil 8.
Example 2
The method further comprises the following steps on the basis of the embodiment 1:
the through holes A23 of the central tube 2 with holes and the through holes B52 on the electromagnetic armature sliding sleeve 5 are long holes, the number of the through holes is 6, and the included angles between the through holes are 60 degrees; the through hole B52 of the electromagnetic armature sliding sleeve 5 and the through hole A23 of the perforated center pipe 2 are staggered by 30 degrees in a closed state, when the through hole B52 of the electromagnetic armature sliding sleeve 5 rotates by 30 degrees, the through hole B52 of the electromagnetic armature sliding sleeve 5 is aligned with the through hole A23 of the perforated center pipe 2, and the electromagnetic switch opens a channel; meanwhile, the middle lower part of the electromagnetic armature sliding sleeve 5 is circumferentially provided with a continuous W-shaped transposition track 51 which is in limited sliding and rotating fit with the fixed track pin 10 to rotate 30 degrees at the same time when the upper and lower stop points are met.
The convex shoulder part of the central tube 2 with the hole is provided with a positioning pin screw hole 21, the upper part of the electromagnetic switch jacket 6 is provided with a positioning pin through hole 61, and the positioning pin screw hole 21 and the positioning pin through hole 61 are positioned and fixed through a positioning pin 9.
The convex shoulder part of the central tube 2 with the hole and the outer wall of the electromagnetic switch jacket 6 are respectively provided with a through cable hole A22 and a through cable hole B62, and the through cable hole A22 and the through cable hole B62 are kept on the same axis after the positioning pin 9 is positioned and fixed.
The lower part of the electromagnetic switch outer sleeve 6 is provided with a pair of rail pin screw holes 63 which are symmetrically arranged.
The multi-core cable upper connector base 3 is arranged on the through cable hole A22 of the shoulder part of the perforated central tube 2.
The pipe fitting further comprises an upper joint 1, and the upper joint 1 is in threaded connection with the perforated central pipe 2.
And the electromagnetic armature sliding sleeve 5 is in threaded connection with the armature sliding sleeve top cap 4.
The lower part of the sand screen pipe assembly 11 is connected with the lower joint 12 through threads.
Example 3
Referring to the attached figure 2, the layered oil production sand prevention tool with the electromagnetic switch mainly comprises an upper connector 1, a perforated central pipe 2, an electromagnetic switch outer sleeve 6, a compression reset spring 7, a positioning pin 9, a multi-core cable upper connector base 3, an electromagnetic coil 8, an electromagnetic armature sliding sleeve 5, an armature sliding sleeve top cap 4, a fixed track pin 10, a sand filter pipe assembly 11 and a lower connector 12.
Referring to fig. 3, the perforated center tube 2 is a tubular body, the upper part of the perforated center tube is provided with a conical external thread, the shoulder part of the perforated center tube is provided with an external thread and a positioning pin screw hole 21, one side of the shoulder part of the perforated center tube is provided with a cable through hole a22, the middle part of the center tube 2 is provided with a group of through holes a23 which are uniformly distributed around the axis, the through holes in the case are elongated holes, the number of the through holes is 6, and the included angles between the holes are.
Referring to fig. 4, the electromagnetic switch case 6 is a tubular body, and has an upper portion formed with an internal thread and a positioning pin through hole 61, a lower shoulder portion side formed with a cable through hole B62, a lower shoulder portion formed with a symmetrical rail pin screw hole 63, and a lower portion formed with an internal thread.
Referring to fig. 5, the electromagnetic armature sliding sleeve 5 is a tubular body, the upper portion of the electromagnetic armature sliding sleeve is provided with external threads, the middle portion of the electromagnetic armature sliding sleeve is provided with a transposition track 51 around the outer circumferential surface, the lower portion of the electromagnetic armature sliding sleeve is provided with a group of through holes B52 uniformly distributed around the axis, the through holes 52 in the present case are long holes, the number of the through holes is 6, and the included angles among the holes are 60 degrees.
Referring to the attached figure 2, an upper connector 1 is in threaded connection with a perforated center tube 2, the perforated center tube 2 is in threaded connection with an electromagnetic switch outer sleeve 6, a positioning pin 9 is arranged at the joint, and a multi-core cable upper connector base 3 is arranged on a cable through hole A22 on one side of the perforated center tube 2. An electromagnetic coil 8 is arranged inside an electromagnetic switch outer sleeve 6, an electromagnetic armature sliding sleeve 5 is arranged in an annular space between the electromagnetic coil 8 and a perforated central pipe 2 and is in sliding fit with the electromagnetic armature sliding sleeve 5 and the perforated central pipe 2, the electromagnetic armature sliding sleeve 5 is in threaded connection with an armature sliding sleeve top cap 4, a compression reset spring 7 is arranged between the armature sliding sleeve top cap 4 and the electromagnetic coil 8, a fixed track pin 10 is arranged at the lower part of the electromagnetic switch outer sleeve 6, the protruding part of the fixed track pin 10 is embedded into a groove of a transposition track 51 of the electromagnetic armature sliding sleeve 5 and is in sliding fit, and the transposition track 51 is in a continuous W shape on. The multi-core cable 30 is led in from the cable connector base 3 at the shoulder part of the perforated central tube 2 and led out from the cable through hole B62 at the lower shoulder part of the electromagnetic switch outer sleeve 6 for the next-stage electromagnetic switch. The lower part of the electromagnetic switch jacket 6 is connected with a sand screen pipe component 11, and the lower part of the sand screen pipe component 11 is connected with a lower joint 12 through threads.
The working principle is as follows: firstly, the connected pipe column of the layered oil extraction sand prevention tool with the electromagnetic switch is put into the well by the drill pipe 20, and the electromagnetic switch of the sand prevention pipe is in a closed state at the moment. After being lowered to the desired location, the tubing is pressurized to set each set of over-the-cable packers 50. After the packer 50 is set, the wellhead releases pressure. When in production, the multi-core cable 30 is electrified at a ground wellhead, the electromagnetic coil 8 of the layered oil production sand prevention tool with the electromagnetic switch is electrified to generate electromagnetic force, and the electromagnetic armature sliding sleeve 5 overcomes the acting force of the compression return spring 7 to move downwards under the action of the electromagnetic force. Since the fixed track pin 10 is located at the position a of the transposition track 51 before the power is not supplied, in the process of descending the electromagnetic armature sliding sleeve 5, the track inclined plane d of the transposition track 51 contacts the top dead center b of the track under the action of the fixed track pin 10, and the electromagnetic armature sliding sleeve 5 is forced to rotate 15 degrees along the axis at the position due to the fixed position of the fixed track pin 10. After power failure, the electromagnetic armature sliding sleeve 5 rises and resets under the action of the compression reset spring 7, in the rising process, the inclined plane e of the electromagnetic armature sliding sleeve 5 acts on the fixed track pin 10 to force the fixed track pin to enter the lower dead center c of the track, the electromagnetic armature sliding sleeve 5 is forced to rotate 15 degrees again after returning to the original position, and in the one-way and one-off process, the deflection track of the electromagnetic armature sliding sleeve 5 is forced to rotate 30 degrees around the axis under the action of the fixed track pin 10. With the through hole B52 of the electromagnetic armature sliding sleeve 5 regularly rotating at different angles, the through hole B52 of the electromagnetic armature sliding sleeve 5 is alternately staggered (i.e., "closed") and centered (i.e., "open") with the through hole A23 of the perforated center tube 2.
Referring to fig. 6, since the through hole B52 of the electromagnetic armature sliding sleeve 5 is staggered by 30 ° from the through hole a23 of the perforated center tube 2 in the closed state, when the through hole B52 of the electromagnetic armature sliding sleeve 5 rotates by 30 °, the two through holes are aligned, and referring to fig. 7, the electromagnetic switch opens the passage. If the plugging is required, the power-on process is repeated again, the electromagnetic armature sliding sleeve 5 rotates 30 degrees again, referring to fig. 6, the through hole a23 of the perforated center tube 2 is staggered 30 degrees again, and the electromagnetic switch is closed. And so on for the rest.
The sand filtering pipes with the electromagnetic switches 40 in the layered oil production sand control tool pipe column are respectively provided with independent control circuits, the control is carried out by 220V commercial power on the ground, each electromagnetic switch is provided with a power supply control line, and all the electromagnetic switches share a zero line. That is, if n electromagnetic switches are controlled, the number of control lines of the multi-core cable is n + 1.
Application example 4
Referring to the attached figure 1 of the specification, the layered oil production sand prevention tool with the electromagnetic switch is applied to the vertical well operation engineering, the upper part of the layered oil production sand prevention tool is connected with a drill rod 20, the lower part of the layered oil production sand prevention tool is provided with 3 sets of layered oil production sand prevention tools with the electromagnetic switch according to the number of underground layering sections, each set of layered oil production sand prevention tool with the electromagnetic switch respectively comprises the electromagnetic switch 40 and a sand filtering pipe assembly 11, two sets of packers 50 are arranged between the 3 sets of layered oil production sand prevention tools with the electromagnetic switch, and the 3 sets of layered oil production sand prevention tools with the electromagnetic switch are sequentially connected by a.
Application example 5
Referring to the attached figure 8 of the specification, the layered oil production sand prevention tool with the electromagnetic switch is applied to the horizontal well operation engineering, the upper part of the layered oil production sand prevention tool is connected with a drill rod 20, the lower part of the layered oil production sand prevention tool is provided with 3 sets of layered oil production sand prevention tools with the electromagnetic switch according to the number of underground layered sections, each set of layered oil production sand prevention tool with the electromagnetic switch respectively comprises an electromagnetic switch 40 and a sand filtering pipe assembly 11, a packer 50 is arranged at the conversion section of a vertical well and a horizontal well, and the 3 sets of layered oil production sand prevention tools with the electromagnetic switch are sequentially connected by.
The sand control tool for layered oil production with the electromagnetic switch has the advantages of simple overall structure and high working reliability, the drift diameter of the central pipe is equal to the inner diameter of the pipe column, and the later operation of an oil well is not influenced.
Claims (9)
1. The utility model provides a sand control tool is adopted in layering with electromagnetic switch which characterized in that: the sand filtering device mainly comprises a perforated central pipe (2), an electromagnetic armature sliding sleeve (5), an electromagnetic switch outer sleeve (6), a compression reset spring (7), an electromagnetic coil (8), a fixed track pin (10), a sand filtering pipe assembly (11), a lower connector (12) and a multi-core cable (30);
the perforated central tube (2) is a tubular body, the upper part of the perforated central tube is provided with a convex shoulder, and the middle lower part of the perforated central tube is provided with a group of through holes A (23) which are uniformly distributed around the axis;
the electromagnetic switch outer sleeve (6) is a tubular body, the upper part of the electromagnetic switch outer sleeve is fixedly connected with a convex shoulder of the central tube (2) with the hole, the lower part of the electromagnetic switch outer sleeve is provided with a track pin screw hole (63), and the fixed track pin (10) is connected and matched with the track pin screw hole (63);
the electromagnetic armature sliding sleeve (5) is a tubular body, the upper part of the electromagnetic armature sliding sleeve is fixedly connected with an armature sliding sleeve top cap (4), the inner wall of the electromagnetic armature sliding sleeve (5) is in axial sliding and rotating fit with the outer wall of the perforated center pipe (2), a continuous W-shaped transposition track (51) is circumferentially arranged at the middle lower part of the electromagnetic armature sliding sleeve (5), the transposition track (51) and a fixed track pin (10) protruding from an electromagnetic switch outer sleeve (6) form limiting sliding and rotating fit, and a through hole B (52) matched with a rotary switch of a through hole A (23) of the perforated center pipe (2) is arranged on the electromagnetic armature sliding sleeve (5) below the transposition track (51);
the compression reset spring (7) and the electromagnetic coil (8) are vertically arranged in an annular space formed by the electromagnetic armature sliding sleeve (5) and the electromagnetic switch outer sleeve (6), and the electromagnetic armature sliding sleeve (5) is driven to move downwards under the action of electromagnetic force of the electromagnetic coil (8) and the armature sliding sleeve top cap (4);
the lower joint (12) is connected to the lower end part of the perforated central pipe (2);
the sand filtering pipe assembly (11) is connected between the electromagnetic switch outer sleeve (6) and the lower connector (12);
the multi-core cable (30) is arranged on the wall of the electromagnetic switch outer sleeve (6) and is connected with the electromagnetic coil (8).
2. The tool of claim 1, wherein the tool comprises: the through holes A (23) of the central tube (2) with the holes and the through holes B (52) on the electromagnetic armature sliding sleeve (5) are strip holes, the number of the through holes is 6, and the included angles between the through holes are 60 degrees; the through hole B (52) of the electromagnetic armature sliding sleeve (5) and the through hole A (23) of the perforated center pipe (2) are staggered by 30 degrees in a closed state, when the through hole B (52) of the electromagnetic armature sliding sleeve (5) rotates by 30 degrees, the through hole B (52) of the electromagnetic armature sliding sleeve (5) and the through hole A23 of the perforated center pipe (2) are aligned, and the electromagnetic switch opens a channel; meanwhile, a continuous W-shaped transposition track (51) is arranged on the middle lower portion of the electromagnetic armature sliding sleeve (5) in the circumferential direction and is in limited sliding and rotating fit with the fixed track pin (10) to rotate 30 degrees at the same time when an upper stop point and a lower stop point are met.
3. The tool of claim 2, wherein the tool comprises: the positioning pin screw hole (21) is formed in the convex shoulder part of the central tube (2) with the hole, the positioning pin through hole (61) is formed in the upper part of the electromagnetic switch outer sleeve (6), and the positioning pin screw hole (21) and the positioning pin through hole (61) are positioned and fixed through the positioning pin (9).
4. The tool of claim 3, wherein the tool comprises: a through cable through hole A (22) and a through cable through hole B (62) are respectively arranged on the shoulder part of the perforated central tube (2) and the outer wall of the electromagnetic switch outer sleeve (6), and the through cable through hole A (22) and the through cable through hole B (62) are kept on the same axis after being positioned and fixed by the positioning pin (9).
5. The tool of claim 3, wherein the tool comprises: the lower part of the electromagnetic switch outer sleeve (6) is provided with a pair of rail pin screw holes (63) which are symmetrically arranged.
6. The tool of claim 4, wherein the tool comprises: the multi-core cable upper connector base (3) is arranged on the cable through hole A (22) of the shoulder part of the perforated central tube (2).
7. The tool of any one of claims 1-6, wherein: the pipe joint is characterized by further comprising an upper joint (1), wherein the upper joint (1) is in threaded connection with the perforated central pipe (2).
8. The tool of any one of claims 1-6, wherein: the electromagnetic armature sliding sleeve (5) is connected with the armature sliding sleeve top cap (4) through threads.
9. The tool of any one of claims 1-6, wherein: the lower part of the sand screen pipe assembly (11) is connected with the lower joint (12) through threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910998999.6A CN112761595A (en) | 2019-10-21 | 2019-10-21 | Sand prevention tool for layered oil production with electromagnetic switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910998999.6A CN112761595A (en) | 2019-10-21 | 2019-10-21 | Sand prevention tool for layered oil production with electromagnetic switch |
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| Publication Number | Publication Date |
|---|---|
| CN112761595A true CN112761595A (en) | 2021-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910998999.6A Pending CN112761595A (en) | 2019-10-21 | 2019-10-21 | Sand prevention tool for layered oil production with electromagnetic switch |
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| Country | Link |
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| CN (1) | CN112761595A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115929262A (en) * | 2023-03-15 | 2023-04-07 | 东营百华石油技术开发有限公司 | Metal sand filtering pipe |
| CN115929294A (en) * | 2023-03-13 | 2023-04-07 | 大庆市璞庆钻采设备制造有限公司 | General trial production tool for operation |
-
2019
- 2019-10-21 CN CN201910998999.6A patent/CN112761595A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115929294A (en) * | 2023-03-13 | 2023-04-07 | 大庆市璞庆钻采设备制造有限公司 | General trial production tool for operation |
| CN115929262A (en) * | 2023-03-15 | 2023-04-07 | 东营百华石油技术开发有限公司 | Metal sand filtering pipe |
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