CN110886603B - Five-parameter intelligent seal inspection instrument for separate injection well - Google Patents
Five-parameter intelligent seal inspection instrument for separate injection well Download PDFInfo
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- CN110886603B CN110886603B CN201811048861.1A CN201811048861A CN110886603B CN 110886603 B CN110886603 B CN 110886603B CN 201811048861 A CN201811048861 A CN 201811048861A CN 110886603 B CN110886603 B CN 110886603B
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- positioning
- leather cup
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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
- E21B47/00—Survey of boreholes or wells
-
- 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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
Abstract
The invention discloses a five-parameter intelligent seal inspection instrument for a separate injection well, wherein a positioning mechanism is connected with a positioning mechanism opening and closing driving device above through an inner connecting rod sleeve, and is connected with a sealing mechanism above through a connecting sleeve, the sealing mechanism is connected with a sealing mechanism unsetting driving device above through a long sheath, the positioning mechanism opening and closing driving device is electrically connected with a lower integrated testing device, the positioning mechanism opening and closing driving device and the lower integrated testing device are both arranged in a middle sheath, the middle sheath is arranged in the long sheath, the sealing mechanism unsetting driving device and an upper integrated testing device are electrically connected, the sealing mechanism unsetting driving device and the upper integrated testing device are both arranged in an upper protective cylinder, a temperature sensor, a flow sensor, a magnetic positioning connector and an upper pressure sensor are also arranged in the upper protective cylinder, and a lower pressure sensor is arranged in the upper end of the inner connecting rod sleeve. The invention realizes direct-reading type electric seal inspection of the underground packer of the separate injection well, simultaneously measures five production parameters of the separate injection well water distributor, and improves the test efficiency and the test reliability of the separate injection well.
Description
Technical Field
The invention relates to the field water injection well test technology, in particular to a five-parameter intelligent seal inspection instrument for a separate injection well.
Background
Separate layer waterflooding is the most economical development way to supplement reservoir energy, expand waterflooding volume and increase reservoir recovery efficiency in the reservoir development process. Research results and field development experience show that the more the water injection layer is divided, the higher the oil field recovery ratio is, and as the oil field generally enters the later stage of high water content development, fine water injection is a necessary requirement for the development of water injection work of the oil field. Separate layer water injection mainly adopts a packer to separate two adjacent intervals. The effectiveness of the packer is directly related to the effect of the stratified water injection, so that the packer needs to be tested and sealed after the completion of the separated injection string and before the test and the allocation to confirm the sealing integrity of the packer.
The existing bridge type concentric separate injection pipe column matching seal checking technology adopts mechanical seal checking, and has the following problems in application: (1) The test instrument is positioned inaccurately, so that inaccurate or failed test is easily caused at the pipe column coupling, and the test workload is increased; (2) The tester relies on the dead weight of the instrument and mechanical slips to seal, and the sealing element is damaged in the sealing process to cause test failure; (3) The tester has descending resistance in the necking section of the pipe column and the directional well, and can not finish the test work.
In order to further improve the injection allocation effect of the separated layer water injection quantity of the oil field, realize the tightness of the separated layer packer and the accuracy of the separated layer water injection data, improve the sealing inspection work efficiency of the separated layer water injection well, reduce the field labor intensity and need to be matched with an electric direct-reading and reliable sealing inspection instrument.
Disclosure of Invention
The invention aims to provide a five-parameter intelligent seal inspection instrument for a separate injection well, which realizes direct-reading type electric seal inspection of a down-hole packer of the separate injection well, simultaneously measures five production parameters such as temperature, up-down pressure, flow and depth of a water distributor of the separate injection well, and improves the test efficiency and the test reliability of the separate injection well.
In order to achieve the purpose, the five-parameter intelligent seal inspection instrument for the separate injection well comprises a positioning mechanism, a sealing mechanism, a positioning mechanism opening and closing driving device, a sealing mechanism unsetting driving device, a lower integrated testing device and an upper integrated testing device, wherein the positioning mechanism is connected with the positioning mechanism opening and closing driving device above through a central pressure transmission sleeve on one hand, and is connected with the sealing mechanism above through a connecting sleeve on the other hand, the sealing mechanism is electrically connected with the sealing mechanism unsetting driving device above through a taper sleeve and a long sheath, the positioning mechanism opening and closing driving device is electrically connected with the lower integrated testing device and is arranged in the middle sheath, the middle sheath is arranged in the long sheath, the sealing mechanism unsetting driving device is electrically connected with the upper integrated testing device and is arranged in the upper protective sleeve, a temperature sensor, a flow sensor, a magnetic positioning connector and an upper pressure sensor are further arranged in the upper protective sleeve, the lower pressure sensor is arranged in the upper end of the central pressure transmission sleeve, the temperature sensor, the flow sensor, the magnetic positioning connector, the upper pressure sensor and the upper pressure sensor are electrically connected with the upper integrated testing device and the lower integrated testing device, and the upper integrated testing device and the lower integrated testing device are electrically connected.
The positioning mechanism comprises a positioning claw main body, a positioning claw, a pre-tightening pressure spring, a switch head, a small pressure spring, a small opening sleeve, a large pressure spring, a central pressure transmission sleeve and a connecting sleeve, wherein the positioning claw is divided into a left claw and a right claw, grooves are formed in two adjacent surfaces of the left claw and the right claw, the pre-tightening pressure spring is installed between the two grooves, the upper end of the left claw and the upper end of the right claw are hinged to the positioning claw main body through respective positioning pins, the positioning claw main body is provided with a radial open cavity for accommodating the positioning claw, the lower end of the switch head is simultaneously propped against an inclined surface formed in the upper end of the left claw and the upper end of the right claw, the middle outer wall of the switch head is in spiral connection with the inner wall of the connecting sleeve, the lower end of the connecting sleeve is connected to the upper end of the positioning claw main body, the small pressure spring is internally installed in the central pressure transmission sleeve, the lower end of the connecting rod sleeve is propped against the upper end of the inner pressure sleeve, the lower end of the central pressure transmission sleeve is propped against the upper end of the switch head, the large pressure spring is externally installed on the positioning claw main body, the upper end of the large pressure spring is propped against the upper end of the limiting table, and the upper end of the limiting table is arranged on the lower end of the upper end of the limiting sleeve.
The positioning mechanism opening and closing driving device comprises a lower motor, a screw sleeve, a lower motor fixing cylinder and a torsion shaft, wherein the lower motor is installed in the lower motor fixing cylinder, the lower motor fixing cylinder is installed in a middle sheath, the lower motor output end is sequentially connected with the torsion shaft, the screw sleeve, a circuit board cylinder, a central pressure transmission sleeve and a small opening sleeve in a threaded connection mode, the lower integrated testing device comprises a lower circuit board, the lower circuit board is arranged in the circuit board cylinder, the upper end of the central pressure transmission sleeve is hermetically arranged in a connector, the upper end of the connector is connected with the circuit board cylinder, the circuit board cylinder is installed in the middle sheath, and a lower thrust bearing is installed between the middle sheath and the lower motor fixing cylinder.
The lower circuit board comprises a first central processing unit and a first memory which are electrically connected, the lower motor is electrically connected with the first central processing unit, and the lower pressure sensor is electrically connected with the first central processing unit.
The sealing mechanism comprises a leather cup seat, a leather cup pressing sleeve, a leather cup and a taper sleeve, wherein the upper end port of the leather cup corresponds to the taper sleeve above, the upper end of the taper sleeve is in threaded connection with a long sheath, the lower end of the leather cup is clamped between the leather cup seat and the leather cup pressing sleeve, the lower end of the leather cup seat is connected to the upper end of a connecting sleeve, the leather cup seat and the leather cup pressing sleeve are sleeved outside the taper sleeve, a central pressure transmission sleeve penetrates through the inner cavity of the taper sleeve, a fixed screw sleeve is arranged on the outer wall of the lower end of the taper sleeve, and the upper end face of the fixed screw sleeve can axially limit the lower end face of the leather cup seat.
The sealing mechanism unsetting driving device comprises an upper motor, a screw block, a small screw sleeve, an upper adapter, a top sleeve, a screw rod, an upper motor bump block, an upper torsion sleeve and an upper motor cylinder, wherein the upper motor is arranged in the upper motor cylinder, the output end of the upper motor and the upper end of the screw rod are synchronously connected with the upper torsion sleeve at the same time, the lower end of the screw rod is axially fixed on the upper adapter, the upper motor bump block is arranged on the upper side of the screw rod, the screw rod and the upper motor bump block are arranged in a groove at the lower part of the upper motor cylinder, and the screw rod, the upper motor bump block and the upper motor cylinder synchronously move axially when the output end of the upper motor rotates; the middle part of the screw rod is provided with a thrust bearing, and the thrust bearing enables external load borne by the screw rod to be transmitted to the motor barrel, so that the load is prevented from acting on the upper motor, and the service life of the motor is prolonged; the screw rod lower part is connected with screw block screw thread, screw block outside is connected with small screw sleeve screw, small screw sleeve outside is connected with long sheath upper end screw thread, screw rod, screw block, upper adapter form screw nut mechanism, and when the screw rod is rotatory, the screw block moves along the screw rod in step, drives small screw sleeve, long sheath synchronous motion, and long sheath moves, drives taper sleeve synchronous motion, and then accomplishes the compaction and the release of leather cup.
The upper integrated testing device comprises a first central processor and a first storage, wherein the first central processor and the first storage are electrically connected with the first central processor, the first motor is electrically connected with the first central processor, the temperature sensor, the flow sensor, the magnetic positioning connector and the first pressure sensor are electrically connected with the first central processor, the magnetic positioning connector is positioned at an upper port of the upper protective cylinder, the upper end of the magnetic positioning connector is connected with the upper connector, the upper end of the upper motor cylinder is connected with the sliding needle seat, the upper end of the sliding needle seat is connected with the compression spiral ring, and the upper end of the upper motor is fixed by the sliding needle seat and the compression spiral ring.
The second central processing unit is electrically connected with the ground processor.
Compared with the prior art, the invention has the following beneficial effects:
the injection allocation effect of the separated layer water injection quantity of the oil field is improved, the tightness of the separated layer packer and the accuracy of the separated layer water injection data are realized, the sealing inspection working efficiency of the separated injection well is improved, and the field labor intensity is reduced. The direct-reading type electric seal inspection of the underground packer of the separate injection well is realized, five production parameters of the temperature, the upper pressure, the lower pressure, the flow and the depth of the water distributor of the separate injection well are measured simultaneously, and the test efficiency and the test reliability of the separate injection well are improved.
Drawings
Fig. 1 is a schematic structural diagram of a five-parameter intelligent seal inspection instrument for a separate injection well.
In the figure: the device comprises a 1-positioning claw main body, a 2-positioning claw, a 3-pressure spring, a 4-switch head, a 5-small pressure spring, a 6-small opening sleeve, a 7-large pressure spring, a 8-center pressure transmission sleeve, a 9-connecting sleeve, a 10-leather cup holder, a 11-leather cup pressure sleeve, a 12-leather cup, a 13-taper sleeve, a 14-connector, a 15-circuit board cylinder, a 16-middle sheath, a 17-long sheath, a 18-taper sleeve, a 19-lower motor fixing cylinder, a 20-torsion shaft, a 21-screw block, a 22-small screw sleeve, a 23-upper adapter, a 24-top sleeve, a 25-screw rod, a 26-upper motor bump block, a 27-upper torsion sleeve, a 28-upper motor cylinder, a 29-upper protective cylinder, a 30-sliding needle seat, a 31-compression spiral ring, a 32-fixing screw sleeve, a 33-thrust bearing, a 34-thrust bearing, a 35-temperature sensor, a 36-flow sensor, a 37-magnetic positioning connector, a 38-lower pressure sensor, a 39-upper pressure sensor, a 40-lower circuit board, a 41-lower motor, a 42-lower motor, a 43-upper connector, a 43-upper circuit board and a 43-circuit board, a 44-connector, and a 45-ground connector.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, the present invention provides a technical solution: the five-parameter intelligent seal inspection instrument for the separate injection well comprises a positioning mechanism, a sealing mechanism, a positioning mechanism opening and closing driving device, a sealing mechanism unsetting driving device, a lower integrated testing device and an upper integrated testing device, wherein the positioning mechanism is connected with the positioning mechanism opening and closing driving device above through a central pressure transmission sleeve 8 on one hand, and is connected with the sealing mechanism above through a connecting sleeve 9 on the other hand, the sealing mechanism is connected with the sealing mechanism unsetting driving device above through a taper sleeve 13 and a long sheath 17, the positioning mechanism opening and closing driving device is electrically connected with the lower integrated testing device and is electrically arranged in a middle sheath 16, the middle sheath 16 is arranged in the long sheath 17, the sealing mechanism unsetting driving device is electrically connected with the upper integrated testing device and is electrically arranged in an upper protective sleeve 29, a temperature sensor 35, a flow sensor 36, a magnetic positioning connector 37 and an upper pressure sensor 39 are further arranged in the upper protective sleeve 29, a lower pressure sensor 38 is arranged inside the upper end of the central pressure transmission sleeve 8, and the temperature sensor 35, the flow sensor 36, the magnetic positioning connector 37 and the upper pressure sensor 39 are electrically connected with the upper integrated testing device and the lower integrated testing device.
The positioning mechanism comprises a positioning claw main body 1, a positioning claw 2, a pre-compression spring 3, a switch head 4, a small pressure spring 5, a small opening sleeve 6, a large pressure spring 7, a central pressure transmission sleeve 8 and a connecting sleeve 9, wherein the positioning claw 2 is divided into a left claw and a right claw, grooves are formed on two adjacent surfaces of the left claw and the right claw, the pre-compression spring 3 is arranged between the two grooves, the upper end of the left claw and the upper end of the right claw are hinged on the positioning claw main body 1 through respective positioning pins, the positioning claw main body 1 is provided with a radial open cavity for accommodating the positioning claw, the lower end of the switch head 4 is simultaneously propped against an inclined surface formed on the upper end of the left claw and the upper end of the right claw, the upper end of the positioning claw main body 1 is in threaded connection with the connecting sleeve 9, the switch head 4 is in a flat structure, the switch head 4 is fixed in the small opening sleeve 6, the upper end of the small opening sleeve 6 is in threaded connection with the central pressure transmission sleeve 8, the upper end of the central pressure transmission sleeve 8 is in threaded connection with a circuit board cylinder 15, the inner and outer sides of the small opening sleeve 6 are respectively provided with the small pressure spring 5 and the large pressure spring 7, the upper end of the small pressure spring 5 is propped against the upper end of the lower end of the small pressure spring 7 and the upper end of the small pressure spring 7 is propped against the upper end of the small pressure spring 7, and the upper end of the small pressure spring is in the upper end of the lower end of the small opening sleeve 6 is in the upper end of limit stop position of the upper end is; the large and small compression springs axially centralize the small opening sleeve 6 on one hand, and tightly connect the connecting sleeve 9 with the small opening sleeve 6 and the switch head 4 on the other hand, and the switch head 4 and the lower motor 41 synchronously rotate in the torque transmission process of the lower motor 41.
The positioning mechanism opening and closing driving device comprises a lower motor 41, a screw sleeve 18, a lower motor fixing cylinder 19 and a torsion shaft 20, wherein the lower motor 41 is installed in the lower motor fixing cylinder 19, the lower motor fixing cylinder 19 is installed in a middle sheath 16, the output end of the lower motor 41 is sequentially connected with the torsion shaft 20, the screw sleeve 18, a circuit board cylinder 15, a central pressure transmission sleeve 8 and a small opening sleeve 6, the lower integrated testing device comprises a lower circuit board 40, the lower circuit board 40 is arranged in the circuit board cylinder 15, the upper end of the central pressure transmission sleeve 8 is hermetically arranged in a connector 14, the upper end of the connector 14 is connected with the circuit board cylinder 15, the circuit board cylinder 15 is installed in the middle sheath 16, and a lower thrust bearing 33 is installed between the middle sheath 16 and the lower motor fixing cylinder 19.
The sealing means of the header 14 prevents liquids from entering the inner jacket 16 and contacting the lower circuit board 40, causing instrument shorting failure. The thrust bearing 33 can transmit the stratum pressure to the lower motor fixing cylinder through the central pressure transmitting sleeve 8 and the connector 14, so that the lower motor 41 is prevented from being damaged due to the load acting on the lower motor 41. The middle sheath 16 prevents external pressure from acting on the circuit board 40 and the lower motor 41, and prevents the bearing damage of each part inside. The circuit board cylinder 15 protects the circuit board 40 on the one hand and also transmits the torque of the lower motor 41 through the screw. The torsion shaft 20 and the screw sleeve 18 transfer the torque of the lower motor 41 from the axis center to the cylinder body of the circuit board cylinder 15 and transfer the torque to the switch head 4 through the center pressure transmission sleeve 8.
After the instrument is lowered to a preset position, the lower motor receives a starting instruction, the lower motor rotates positively, torque is transmitted to a screw sleeve 18 from an output shaft of the lower motor through a torsion shaft 20, the screw sleeve is in threaded connection with a circuit board barrel 15, the torque drives the circuit board barrel 15 to rotate, the circuit board barrel 15 is in threaded connection with a central pressure transmission sleeve 8, the torque drives the central pressure transmission sleeve 8 to rotate, the central pressure transmission sleeve 8 is in threaded connection with a small opening sleeve 6, the torque drives the small opening sleeve 6 to rotate, a switch head 4 is inlaid in the small opening sleeve 6, the switch head 4 is limited by a positioning claw main body 1 axially and can only rotate along with the small opening sleeve 6 (the small opening sleeve is flat, and the horizontal and vertical dimensions are different), the switch head 4 rotates 90 degrees to trigger a positioning claw 2 to open, and the positioning claw is fixed on a water distributor groove of a water injection well.
The lower circuit board 40 includes a first central processor and a first memory which are electrically connected, the lower motor 41 is electrically connected to the first central processor, and the lower pressure sensor 38 is electrically connected to the first central processor.
The sealing mechanism comprises a leather cup seat 10, a leather cup pressing sleeve 11, a leather cup 12 and a taper sleeve 13, wherein the upper end port of the leather cup 12 corresponds to the taper sleeve 13 above, the upper end of the taper sleeve 13 is in threaded connection with a long sheath 17, the lower end of the leather cup 12 is clamped between the leather cup seat 10 and the leather cup pressing sleeve 11, the lower end of the leather cup seat 10 is connected to the upper end of a connecting sleeve 9, the leather cup seat 10 and the leather cup pressing sleeve 11 are sleeved outside the taper sleeve 13, a central pressure transmission sleeve 8 penetrates through the inner cavity of the taper sleeve 13, a fixed screw sleeve 32 is arranged on the outer wall of the lower end of the taper sleeve 13, and the upper end surface of the fixed screw sleeve 32 can axially limit the lower end surface of the leather cup seat. The cup holder 10 and the cup pressing sleeve 11 limit the cup 12 radially, ensure that the cup is reliably seated and unsealed and smoothly starts to take off, and the long sheath 17 transmits the driving force of the upper motor to push the lower taper sleeve 13 and act. The central pressure transmitting sleeve 8 transmits the pressure below the cup to the lower pressure sensor 38, and the pressure is compared with the pressure measured above the cup.
The sealing mechanism unsetting driving device comprises an upper motor, a screw block, a small screw sleeve, an upper adapter, a top sleeve, a screw rod, an upper motor bump block, an upper torsion sleeve and an upper motor cylinder, wherein the upper motor is arranged in the upper motor cylinder, the upper motor output end and the upper end of the screw rod are synchronously connected with the upper torsion sleeve 27, the lower end of the screw rod is axially fixed on the upper adapter 23, the upper motor bump block 26 is arranged on the upper side of the screw rod, the screw rod 25 and the upper motor bump block 26 are arranged in a groove at the lower part of the upper motor cylinder 28, the screw rod 25, the upper motor bump block 26 and the upper motor cylinder 28 form a screw rod nut mechanism, when the upper motor output end rotates, the upper motor bump block 26 synchronously moves axially, and the upper motor cylinder is provided with upper limit switches and lower limit switches at the two sides of the upper motor bump block. The middle part of the screw rod is provided with a thrust bearing, and the thrust bearing enables external load borne by the screw rod to be transmitted to the motor barrel, so that the load is prevented from acting on the upper motor, and the service life of the motor is prolonged. The lower part of the screw rod 25 is in threaded connection with the screw block 21, the outer part of the screw block 21 is in threaded connection with the small screw sleeve 22, the outer part of the small screw sleeve 22 is in threaded connection with the upper end of the long sheath 17, the screw rod 25, the screw block 21 and the upper adapter 23 form a screw rod nut mechanism, when the screw rod 25 rotates, the screw block 21 synchronously moves along the screw rod 25 to drive the small screw sleeve 22 and the long sheath 17 to synchronously move, and the long sheath 17 moves to drive the cone sleeve 13 to synchronously move, so that the packing cup is pressed and released.
The screw rod is provided with an upper motor bump block, the upper motor cylinder is provided with an upper limit switch and a lower limit switch, and the upper motor bump block axially runs between the upper limit switch and the lower limit switch.
The outer wall installs thrust bearing, top cover in the middle of the lead screw, and top cover upper end withstands thrust bearing, and top cover lower extreme is withstood on last adapter, goes up the adapter screw thread and connects at last protective casing lower extreme inner wall, goes up adapter inner wall and lead screw outer wall and is sealing state.
The upper motor receives a forward/setting command, the upper motor rotates forward, the screw is driven by torque of the upper motor to synchronously rotate, the upper motor bump block 26 and the screw block 21 synchronously move downwards along the axial direction of the screw, the screw block 21 pushes the small screw sleeve 22, the long sheath 17 and the taper sleeve 13 to synchronously move downwards to tightly press the leather cup 12, the leather cup 12 is expanded and tightly attached to the inner wall of the water injection well water distributor, and the up-down sealing and up-down pressure separation of the seal tester of the measuring and regulating instrument are realized. When the leather cup is in place, the upper motor bump 26 just reaches the upper and lower limit switches of the upper motor cylinder, the upper motor stops the forward rotation/setting action, and at the moment, the pressure, temperature and flow sensors perform testing and data transmission. After the test is finished, the upper motor receives an instruction of reverse/unsealing, the upper motor rotates reversely, the upper motor bump block 26 and the screw block 21, the long sheath 17, the taper sleeve 13 and the like move upwards synchronously, the leather cup is gradually released to restore to a free state, and when the long sheath 17 approaches the lower end face of the upper protective cylinder 29, the upper motor bump block 26 just triggers an upper limit switch of the upper motor, and the upper motor stops the reverse/unsealing action. The upper limit switch and the lower limit switch are reasonably arranged according to the moving distance of the taper sleeve.
The second central processing unit and the second memory that the integrated testing arrangement is connected mutually electricity, go up motor 42 and second central processing unit electricity and be connected, temperature sensor 35, flow sensor 36, magnetic positioning joint 37, go up pressure sensor 39 and all be connected with the second central processing unit electricity, magnetic positioning joint 37 location is at the last port of protecting a section of thick bamboo 29, upper joint 45 is connected to magnetic positioning joint 37 upper end, the needle holder 30 is connected to last motor section of thick bamboo 28 upper end, the compression spiral ring 31 is connected to needle holder 30 upper end, it is fixed by needle holder 30, compression spiral ring 31 to go up motor 42 upper end. The second cpu is electrically connected to the ground processor 47.
The positioning mechanism is provided with a positioning claw body 1, a positioning hole is formed in the positioning claw body, a positioning claw 2 is fixed in the positioning hole through a positioning pin of the positioning body, a groove is formed in the positioning claw, a pressure spring 3 is arranged in the groove, the positioning claw can rotate around the positioning pin, and the pressure spring 3 ensures that the positioning claw cannot shake and open back and forth under normal conditions.
The positioning mechanism is matched with a lower motor 41, and is positioned in a lower motor fixing barrel 19, the output torque of the motor is sequentially transmitted to a torsion shaft 20, a screw sleeve 18, a circuit board barrel 15, a central pressure transmission sleeve 8, a small opening sleeve 6 and a switch head 4, the motor rotates positively, the switch head 4 pushes a conical surface arranged at the upper end of a positioning claw 2 to force the positioning claw 2 to rotate and open around a positioning pin, so that the axial positioning of the seal inspection instrument is realized, and otherwise, the positioning claw 2 is retracted and the seal inspection instrument can move freely along the axial direction.
The sealing mechanism comprises a leather cup 12, a leather cup pressing sleeve 11 and a leather cup seat 10, wherein the leather cup seat is fixed in the connecting sleeve 9 through internal threads, the leather cup is arranged in a leather cup seat groove, the leather cup pressing sleeve is sleeved at the heel part of the leather cup seat, and the leather cup is fixed in annular spaces of the leather cup seat and the leather cup pressing sleeve.
The sealing mechanism is matched with an upper motor 42, the upper motor is positioned in an upper motor cylinder 28, the tail part of the upper motor 42 is fixed by a sliding needle seat 30 and a compression spiral ring 31, the output torque of the upper motor is sequentially transmitted to a screw rod 25, a spiral block 21, a long sheath 17 and a taper sleeve 13, the motor rotates positively, and the torque pushes the taper sleeve 13 to downwards compress a leather cup 12, so that the leather cup is expanded. The motor rotates reversely, the torque pulls the taper sleeve 13 to retract upwards, and the leather cup 12 rebounds to restore to the original state.
The upper motor 42 is matched with upper and lower limit switches 48-1 and 48-2, the limit switches are fixed on the upper motor cylinder 28, the upper motor bump 26 is connected with the screw rod 25 through threads, the output shaft of the upper motor 42 rotates to drive the screw rod 25 to rotate, the upper motor bump 26 moves axially along the screw rod, when the upper motor 42 executes a leather cup expanding instruction, the upper motor 42 rotates in the forward direction, the upper motor 42 drives the screw rod 25 to rotate, the upper motor bump 26, the screw block 21 and the taper sleeve 13 synchronously move, and when the taper sleeve 13 extrudes the leather cup 12 to maximum deformation, the upper motor bump just starts the lower limit switch 48-1, the upper motor 42 commutates, and the upper motor 42 shifts to a reverse rotation state. When the seal inspection of the seal inspection instrument is finished, the upper motor 42 starts to rotate reversely, the screw rod 25 is driven to rotate reversely by torque of the upper motor 42, the upper motor bump block 26, the screw block 21 and the taper sleeve 13 are retracted upwards, the leather cup 12 is restored to the original state, and the seal inspection instrument is unsealed. When the cone sleeve 13 is retracted to the limit position, the upper motor bump 26 contacts the upper limit switch 48-2, the upper motor 42 commutates, and the upper motor 42 shifts to the forward rotation state.
The integrated test device includes a lower circuit board 40, an upper circuit board 43, temperature, pressure, flow, magnetic positioning sensors, etc., powered by a ground cable 44.
The lower circuit board 40 is positioned in the circuit board cylinder 15, the axial direction is fixed by the upper screw sleeve 18, the upper screw sleeve 18 is connected with the central pressure transmission sleeve 8 through threads, the central pressure transmission sleeve is provided with a central pressure transmission hole, the central pressure transmission hole is connected with the lower pressure sensor 38, the lower end of the central pressure transmission sleeve 8 is connected with the small opening sleeve 6, the lower screw sleeve 32 is sleeved outside the central pressure transmission sleeve 8, the upper end and the lower end of the small opening sleeve are provided with lateral openings, the small opening sleeve is sleeved with a switch head, the switch head and a small pressure spring are arranged on the inner side of the small opening sleeve, and the outer side of the small opening sleeve is sleeved with the large pressure spring 7 and is arranged in the connecting sleeve 9.
The lower circuit board 40 collects signals of the lower pressure sensor 38 and communicates with the upper circuit board 43 in a wired or wireless manner, and transmits the collected signals to the upper circuit board 43.
The upper circuit board 43 is positioned at the tail part of the seal inspection instrument and is axially fixed by pressing the spiral ring and an upper joint at the tail part of the seal inspection instrument.
The upper circuit board 43 processes the signals collected by the downhole temperature, pressure, depth and flow sensors, and controls the start and stop of the lower motor 41 and the upper motor 42 and the rotation speed adjustment.
The cable 44 provides both power to the upper and lower motors and communication signals to the circuit board 43.
On the basis of the above, the obtained data such as temperature, pressure, depth, flow and the like can be further transmitted to the ground processor 47 for processing, the ground processor 47 is a notebook or embedded controller terminal, and control instructions are sent through software to control the movement of the underground up-down motor and display the data monitored by the pressure, temperature, flow sensors and the like in real time. The ground processor 47 and the software applied to process various data are all conventional in the art and can be directly connected to the notebook application software process.
When the oilfield separated layer water injection pipe column needs to be subjected to seal testing, the seal testing instrument of the invention is used for feeding the oil pipe by the cable. In the process of entering, the positioning claw and the sealing body are in a retracted state, the depth of the position of the tester is displayed on the ground in real time, when the tester reaches the position above a preset water distribution layer section, the ground processor 47 sends out a signal instruction, the lower motor 41 of the seal tester is started, the lower motor rotates forwards to drive the screw sleeve, the circuit board barrel and the central pressure transmission sleeve to rotate, and the driving opening Guan Toudeng rotates together and opens the positioning claw, so that the seal tester can be positioned accurately.
After the lower motor 41 stops moving, the upper motor 42 rotates positively, the upper motor receives a forward rotation instruction, the upper motor drives the screw rod to rotate, the taper sleeve is pushed to move downwards to enter the leather cup, when the taper sleeve completely presses the leather cup into the leather cup sleeve and compresses the leather cup, the upper motor touch block 26 contacts with the upper limit switch 48-2, the upper motor stops moving immediately, and the sealing action of the seal inspection instrument is completed.
Performing an on-off-on or off-on-off test at the wellhead, wherein if the packer is effectively set at the test interval, a differential pressure is generated between the tubing pressure and the stratum, the tubing pressure (upper pressure gauge) is obviously separated from the stratum pressure (lower pressure gauge) on a pressure curve, and the test flow of the downhole flow sensor is zero; when the pressure of the test oil pipe is zero and the flow is not zero, judging that the water distributor is blocked; otherwise, the pressure of the test oil pipe is not zero, the flow is not zero, and the sealing failure of the packer is judged.
After the seal inspection and reception of the layer section, the upper motor 42 is reversed, the screw rod 25 is driven to rotate, the screw block 21 and the taper sleeve 13 are retracted, the sealing body leather cup 12 is restored to the original state, the upper motor collision block 26 is contacted with the upper limit switch 48-2, the upper motor stops reversing, and the seal inspection and seal inspection instrument is unsealed.
Then, the lower motor 41 is reversed, the torsion shaft 20, the threaded sleeve 18, the circuit board barrel 15, the central pressure transmission sleeve 8, the small opening sleeve 6, the switch head 4 and the like are driven to be reversed, the positioning claw 2 is retracted, the seal inspection instrument is restored to an axial free state, and the seal inspection instrument is lifted and put by a ground wellhead cable.
And sequentially testing from bottom to top along the well bottom until the seal inspection of each layer section is completed, and recovering by a surface wellhead cable.
In the description of the present invention, it should be understood that the orientation indication or positional relationship is based on the orientation or positional relationship shown in the drawings, for convenience of description of the present invention only, and is not intended to indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a five parameter intelligence of injection well examine seal appearance, its characterized in that includes positioning mechanism, sealing mechanism, positioning mechanism opening and close drive arrangement, sealing mechanism unset drive arrangement, lower integrated testing arrangement, goes up integrated testing arrangement, positioning mechanism opens and close drive arrangement through the positioning mechanism of center transmission pressure sleeve connection top on the one hand, and on the other hand is connected with the sealing mechanism of top through the coupling sleeve, sealing mechanism includes leather cup seat, leather cup pressure sleeve, leather cup, taper sleeve, the upper end of leather cup corresponds the taper sleeve of top, taper sleeve upper end and long sheath threaded connection, long sheath is connected with the sealing mechanism of top unset drive arrangement of top, positioning mechanism opens and close drive arrangement and is connected with integrated testing arrangement down and both set up in the well sheath, well sheath is installed in the long sheath, sealing mechanism unset drive arrangement and last integrated testing arrangement electricity are connected and the two are all set up in last protective cylinder, still set up temperature sensor, flow sensor, magnetic positioning joint, last pressure sensor, the inside the center transmission pressure sleeve, set up the inside the pressure sensor, pressure sensor is connected with integrated testing arrangement down, integrated testing arrangement and integrated testing arrangement.
2. The five-parameter intelligent seal inspection instrument for the separate injection well according to claim 1, wherein the positioning mechanism comprises a positioning claw main body, a positioning claw, a pre-tightening pressure spring, a switch head, a small pressure spring, a small opening sleeve, a large pressure spring, a central pressure transmission sleeve and a connecting sleeve, the positioning claw is divided into a left claw and a right claw, grooves are formed on two adjacent surfaces of the left claw and the right claw, the pre-tightening pressure spring is arranged between the two grooves, the upper end of the left claw and the upper end of the right claw are hinged on the positioning claw main body through respective positioning pins, the positioning claw main body is provided with a radial open cavity for accommodating the positioning claw, the lower end of the switch head is simultaneously propped against an inclined plane formed at the upper end of the left claw and the upper end of the right claw, the upper end of the positioning claw main body is in threaded connection with the connecting sleeve, the switch head is in a flat structure, the upper end of the small opening sleeve is in threaded connection with the central pressure transmission sleeve, the upper end of the central pressure transmission sleeve is in threaded connection with a circuit board barrel, the small opening sleeve is internally and externally provided with the small pressure spring and externally, the large pressure spring and the upper end of the small pressure spring is propped against the upper end of the small opening sleeve and the lower end of the small opening sleeve, the upper end of the pressure spring is propped against the upper end of the small pressure spring is in the upper end of the small opening and lower end of the limit stop sleeve; the large pressure spring and the small pressure spring axially straighten the small opening sleeve on one hand, and the connecting sleeve is tightly connected with the small opening sleeve and the switch head on the other hand, so that the switch head and the lower motor synchronously rotate in the torque transmission process of the lower motor.
3. The five-parameter intelligent seal inspection instrument for the separate injection well according to claim 1 or 2, wherein the positioning mechanism opening and closing driving device comprises a lower motor, a screw sleeve, a lower motor fixing cylinder and a torsion shaft, the lower motor is installed in the lower motor fixing cylinder, the lower motor fixing cylinder is installed in a middle sheath, the lower motor output end is sequentially connected with the torsion shaft, the screw sleeve, a circuit board cylinder, a central pressure transmission sleeve and a small opening sleeve, the lower integrated testing device comprises a lower circuit board, the lower circuit board is arranged in the circuit board cylinder, the upper end of the central pressure transmission sleeve is arranged in a connector in a sealing mode, the upper end of the connector is connected with the circuit board cylinder, the circuit board cylinder is installed in the middle sheath, and a lower thrust bearing is installed between the middle sheath and the lower motor fixing cylinder.
4. The five-parameter intelligent seal inspection instrument for the separate injection well according to claim 3, wherein the lower circuit board comprises a first central processing unit and a first memory which are electrically connected, the lower motor is electrically connected with the first central processing unit, and the lower pressure sensor is electrically connected with the first central processing unit.
5. The five-parameter intelligent seal inspection instrument for the separate injection well according to claim 1, wherein the lower end of the leather cup is clamped between a leather cup seat and a leather cup pressing sleeve, the lower end of the leather cup seat is connected to the upper end of a connecting sleeve, the leather cup seat and the leather cup pressing sleeve are sleeved outside a taper sleeve, a central pressure transmission sleeve penetrates through an inner cavity of the taper sleeve, a fixed screw sleeve is arranged on the outer wall of the lower end of the taper sleeve, and the upper end face of the fixed screw sleeve can axially limit the lower end face of the leather cup seat.
6. The five-parameter intelligent seal inspection instrument for the separate injection well according to claim 5, wherein the seal mechanism unsetting driving device comprises an upper motor, a screw block, a small screw sleeve, an upper adapter, a top sleeve, a screw rod, an upper motor bump block, an upper torsion sleeve and an upper motor cylinder, wherein the upper motor is arranged in the upper motor cylinder, an upper motor output end and the upper end of the screw rod are synchronously connected with the upper torsion sleeve, the lower end of the screw rod is axially fixed on the upper adapter, the upper motor bump block is arranged on the upper side of the screw rod, the screw rod and the upper motor bump block are arranged in a groove at the lower part of the upper motor cylinder, the screw rod, the upper motor bump block and the upper motor cylinder form a screw rod nut mechanism, when the upper motor output end rotates, the upper motor cylinder synchronously moves axially, and upper limit switches and lower limit switches are arranged on two sides of the upper motor bump block; the middle part of the screw rod is provided with a thrust bearing, and the thrust bearing enables external load borne by the screw rod to be transmitted to the motor barrel, so that the load is prevented from acting on the upper motor, and the service life of the motor is prolonged; the screw rod lower part is connected with screw block screw thread, screw block outside is connected with small screw sleeve screw, small screw sleeve outside is connected with long sheath upper end screw thread, screw rod, screw block, upper adapter form screw nut mechanism, and when the screw rod is rotatory, the screw block moves along the screw rod in step, drives small screw sleeve, long sheath synchronous motion, and long sheath moves, drives taper sleeve synchronous motion, and then accomplishes the compaction and the release of leather cup.
7. The five-parameter intelligent seal inspection instrument for the separate injection well according to claim 6, wherein the upper integrated testing device is electrically connected with the second central processing unit and the second memory, the upper motor is electrically connected with the second central processing unit, the temperature sensor, the flow sensor, the magnetic positioning connector and the upper pressure sensor are all electrically connected with the second central processing unit, the magnetic positioning connector is positioned at an upper port of the upper casing, the upper end of the magnetic positioning connector is connected with the upper connector, the upper end of the upper motor cylinder is connected with the sliding needle seat, the upper end of the sliding needle seat is connected with the compression spiral ring, and the upper end of the upper motor is fixed by the sliding needle seat and the compression spiral ring.
8. The five-parameter intelligent seal inspection instrument for the separate injection well of claim 7, wherein the second central processor is electrically connected with a ground processor.
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| CN201811048861.1A CN110886603B (en) | 2018-09-07 | 2018-09-07 | Five-parameter intelligent seal inspection instrument for separate injection well |
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| CN201811048861.1A CN110886603B (en) | 2018-09-07 | 2018-09-07 | Five-parameter intelligent seal inspection instrument for separate injection well |
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