CN113323649A - Integrated flow-collecting bridge type testing, adjusting, inspecting, sealing and injecting system and using method thereof - Google Patents
Integrated flow-collecting bridge type testing, adjusting, inspecting, sealing and injecting system and using method thereof Download PDFInfo
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- CN113323649A CN113323649A CN202110574896.4A CN202110574896A CN113323649A CN 113323649 A CN113323649 A CN 113323649A CN 202110574896 A CN202110574896 A CN 202110574896A CN 113323649 A CN113323649 A CN 113323649A
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- 238000012360 testing method Methods 0.000 title claims abstract description 178
- 238000007789 sealing Methods 0.000 title claims abstract description 93
- 238000000034 method Methods 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 139
- 238000002347 injection Methods 0.000 claims abstract description 92
- 239000007924 injection Substances 0.000 claims abstract description 92
- 238000012856 packing Methods 0.000 claims abstract description 40
- 230000007246 mechanism Effects 0.000 claims description 94
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
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- 229910052802 copper Inorganic materials 0.000 claims description 5
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- 210000000078 claw Anatomy 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
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- 239000000463 material Substances 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 2
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- 239000010935 stainless steel Substances 0.000 claims description 2
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- 238000010835 comparative analysis Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
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- 238000001746 injection moulding Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- 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 OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
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Abstract
The invention relates to an integrated flow-collecting bridge type testing, adjusting, testing, sealing and injecting system and a using method thereof, which are applied to oilfield separate-layer water injection. The device comprises a water distributor and an underground measuring and adjusting instrument, wherein the water distributor is provided with a bridge type channel, a water distribution channel, a pressure measuring channel and a linked switch; the linked switch simultaneously controls the water distribution channel and the pressure measuring channel; the underground measuring and adjusting instrument is provided with three packing parts, and a water distribution channel and a pressure measuring channel of the water distributor are respectively positioned between the two packing parts; the underground testing and adjusting instrument is provided with an internal flow channel, and the outlet of the internal flow channel is communicated with a water distribution channel of the water distributor; the underground measuring and adjusting instrument is also provided with an external pressure sensor, an internal flow testing unit and an external flow testing unit. The using method comprises the following steps: setting three sealing elements, adjusting the injection amount, checking the sealing and measuring the pressure. The underground testing and adjusting instrument can complete all testing and adjusting operations by one-time descending, and the operation timeliness is high; the flow-concentrating test is realized, the test precision is high, and the lower limit is low.
Description
Technical Field
The invention relates to the technical field of layered water injection in oil field development of the petroleum industry, in particular to an integrated flow-collecting bridge type testing, adjusting, sealing and injecting system and a using method thereof.
Background
In the process of oil field development, separated layer water injection is one of the most important technologies for improving the oil field recovery efficiency. Through many years of attack and popularization, the current measurement and regulation integrated stratified water injection technology is widely applied to various domestic oil fields. The technology is divided into two parts of a downhole separate injection pipe column and a measuring and adjusting system. The downhole separate injection pipe column comprises a separate layer packer and an adjustable water distributor. The testing and adjusting system comprises a surface controller, a cable and a downhole testing and adjusting instrument. The technology utilizes an underground measuring and adjusting instrument to adjust the water nozzle of the adjustable water distributor and simultaneously test the water injection amount. Compared with the prior art, the method has the advantages of simple process operation and quick aging. If the layered packer needs to be tested or a certain injection layer needs to be tested, another set of instrument needs to be put in for testing, and the operation aging still needs to be improved.
In order to achieve the purpose, the Chinese patent 'bridge type measuring, adjusting, seal checking and pressure measuring integrated high-efficiency water distributor', patent application No. 201910485084.5, application No. 2019.06.05, discloses a water distributor capable of matching with an instrument to completely complete measuring, adjusting, seal checking and pressure measuring after one-time well descending. The pressure measuring valve and the injection distributing valve of the water distributor disclosed use a one-way valve structure with a spring for jacking, the reliability of the structure is not high, and the sealing capability of the structure can be influenced by scaling after the structure works for a period of time in a well.
Chinese patent "bidirectional sealed flow-collecting type flow regulator", application No. 201510973113.4, application No. 2015.12.22, discloses a measuring and regulating instrument with double-cup sealing mechanism. Compared with other testing and adjusting instruments, the testing and adjusting instrument can realize flow concentration testing, lower limit of flow testing is reduced, and testing precision is improved. The sealing leather cup can only realize one-way sealing, namely, the sealing is realized by the pressure above the leather cup. The instrument does not have the functions of packer seal checking and pressure measurement aiming at a certain layer. According to the technical scheme disclosed by the application, only the rotating mechanism at the bottom and the positioning mechanism in the middle are arranged on the regulator, and the anti-reverse mechanism is not arranged on the regulator, so that the regulator does not have the function of regulating the flow of the water distributor. Although the application can perform the current collecting test by self, the technical scheme of the current collecting structure is not disclosed in the specification and the attached drawings.
Disclosure of Invention
In order to solve the technical problems, the invention provides an integrated flow-collecting bridge type measuring, adjusting, sealing, inspecting and injecting system and a using method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
the integrated flow-collecting bridge type measurement, regulation, seal-checking and injection-molding system comprises a water distributor and an underground measurement and regulation instrument, wherein the water distributor is provided with a bridge type channel, a water distribution channel, a pressure measurement channel and a linked switch; the linked switch simultaneously controls the water distribution channel and the pressure measuring channel, so that the water distribution channel and the pressure measuring channel are always in a one-on one-off or full-off state; the linkage switch is driven by a circumferential positioning mechanism of the underground measuring and adjusting instrument; the periphery of the underground testing and adjusting instrument is provided with three packing parts which seal and separate an annular space between the water distributor and the underground testing and adjusting instrument, and a water distribution channel and a pressure measurement channel of the water distributor are respectively positioned between the two packing parts; the underground testing and adjusting instrument is also provided with an inner flow channel, the inlet of the inner flow channel is positioned above the upper sealing part, the outlet of the inner flow channel is arranged between the upper sealing part and the middle sealing part, and the outlet of the inner flow channel is communicated with a water distribution channel of the water distributor; the underground measuring and adjusting instrument is also provided with an external pressure sensor, the external pressure sensor tests the pressure between the middle sealing part and the lower sealing part through an external pressure testing channel, and the external pressure testing channel is communicated with a pressure measuring channel of the water distributor; the underground testing and adjusting instrument is also provided with an internal pressure sensor which tests the pressure in the oil pipe through an internal pressure testing channel; the underground testing and adjusting instrument is also provided with an inner flow testing unit which tests the water injection quantity flowing through the inner flow channel; the underground testing and adjusting instrument is also provided with an external flow testing unit, the external flow testing unit is positioned above a bridge type channel of the water distributor, and the external flow testing unit tests the flow passing through the external flow testing unit and the annular space of the oil pipe.
As a possible embodiment, the water distributor is provided with a switch main body, the switch main body is provided with a central hole, an axial bypass hole is arranged outside the central hole, and radial injection distribution outer holes and pressure measurement outer holes are arranged up and down at a central angle of 90-180 degrees in the circumferential direction of the side wall of the switch main body; the rotating cylinder is coaxially arranged in the central hole and is axially fixed, a radial injection allocation inner hole and a pressure measurement inner hole are arranged on the side wall of the rotating cylinder, the injection allocation inner hole and the pressure measurement inner hole are arranged on the same radial line, and the distance and the axial height between the injection allocation inner hole and the pressure measurement inner hole respectively correspond to the injection allocation outer hole and the pressure measurement outer hole; a filling hole sealing ring is arranged on the outer wall of the rotary cylinder around the filling hole; a pressure measuring hole sealing ring is arranged on the outer wall of the rotary cylinder around the pressure measuring inner hole (324); the upper part of the rotary cylinder is provided with a rotary groove, and a torsion arm of a circumferential positioning mechanism of the underground measuring and adjusting instrument is inserted into the rotary groove; the lower joint is fixedly connected with the switch main body, a lower joint center hole is formed in the lower joint, the anti-rotation sleeve is fixedly installed in the lower joint center hole and is coaxial with the rotating cylinder, an anti-rotation groove is formed in the side wall of the anti-rotation sleeve, and a rotating arm of a rotating mechanism of the underground testing and adjusting instrument is inserted into the anti-rotation groove; and a lower bypass hole is arranged around the central hole of the lower joint.
As a preferred embodiment, the injection outer hole and the pressure outer hole of the water distributor are circumferentially arranged at a 180-degree central angle.
As a preferred embodiment, the rotating cylinder (302) of the water distributor is provided with a rotating positioning mechanism.
As a preferred embodiment, the rotation positioning mechanism includes a radial screw installed on the rotary cylinder, and a positioning screw and a second positioning screw axially installed on the switch main body, when the radial screw rotates and contacts with the positioning screw, the water distribution channel is opened, the pressure measurement channel is closed, and when the radial screw rotates and contacts with the second positioning screw, the water distribution channel is closed, and the pressure measurement channel is opened.
As a preferred embodiment, the rotation positioning mechanism includes a radial screw and a radial screw two mounted on the rotary cylinder, and a positioning screw axially mounted on the switch main body, when the radial screw rotates and contacts with the positioning screw, the water distribution channel is opened, the pressure measurement channel is closed, and when the radial screw two rotates and contacts with the positioning screw, the water distribution channel is closed, and the pressure measurement channel is opened.
As a preferred embodiment, a first back ring is arranged on the outer wall of the rotary cylinder and is circumferentially symmetrical to the injection hole sealing ring, and a second back ring is arranged on the outer wall of the rotary cylinder and is circumferentially symmetrical to the pressure measuring hole sealing ring.
As a preferred embodiment, a check valve is arranged on the outer hole of the dispensing nozzle in the side wall of the switch main body.
As a possible embodiment, the downhole testing and adjusting instrument comprises an internal flow testing unit, a positioning unit, a packing unit and a pressure testing nipple which are sequentially connected from top to bottom, wherein the internal flow testing unit, the positioning nipple, the packing nipple and the pressure testing nipple which are included by the internal flow testing unit and the positioning unit and the packing unit and the pressure testing nipple are respectively provided with a coaxial central through hole, a mandrel penetrates through the central through hole, and the mandrel is connected with a mandrel driving motor through a coupler; the mandrel is tubular and is provided with an electric wire passing through; the internal flow testing unit comprises an internal flow shell which is sleeved outside the internal flow nipple and forms a sealing cavity, the internal flow sensor is arranged in the sealing cavity, an upper internal flow annulus is formed between the mandrel and a central through hole of the internal flow nipple, and an internal flow inlet which is communicated with the upper internal flow annulus is arranged at the upper part of the internal flow nipple; the positioning unit comprises an axial positioning mechanism and a circumferential positioning mechanism which are arranged on the positioning short section, and an axial inner flow side hole is arranged on the side wall of the positioning short section and is used as a part of the inner flow channel; the packing unit comprises three packing parts and a setting mechanism thereof, wherein the setting mechanism comprises a setting thread arranged on the mandrel, a setting block connected with the mandrel through the setting thread, an extrusion ring sleeved on the periphery of the packing short section together with the packing parts, and a penetrating nail for fixing the extrusion ring and the setting block; a penetrating groove is formed in the side wall of the packing nipple, and a penetrating nail penetrates through the penetrating groove to fixedly connect the packing block with the extrusion ring; the central through hole of the packing nipple is a shoulder hole with the diameter expanded up and down, the mandrel and the diameter expanded parts of the upper part and the lower part of the central through hole respectively form a lower inner flow annulus and a lower pressure transmission annulus, and the setting block is arranged in the lower inner flow annulus and the lower pressure transmission annulus in a splitting manner; the rotating direction of the setting thread is adapted to the moving direction of the setting block; the pressure testing nipple is provided with an external pressure testing side hole, the upper end of the external pressure testing side hole is communicated with the lower pressure transmission annulus, and the lower end of the external pressure testing side hole is provided with an external pressure sensor; the pressure test nipple is also provided with an internal pressure test channel, the upper end of the internal pressure test channel is opened on the outer wall of the pressure test nipple, and the lower end of the internal pressure test channel is provided with an internal pressure sensor; the lower motor sleeve is connected below the pressure testing nipple, a rotating mechanism driving motor installed in the lower motor sleeve is connected with a rotating mechanism through a coupler, and the rotating mechanism is arranged at the lowest end of the underground testing and adjusting instrument.
As a possible embodiment, the upper setting block and the middle setting block are arranged in the lower inner flow annulus, and the lower setting block is arranged in the lower pressure transmission annulus; the upper setting thread and the middle setting thread are opposite in rotation direction.
As a possible embodiment, the upper setting block is installed in the lower internal flow annular space, and the middle setting block and the lower setting block are installed in the lower transfer annular space; the middle setting thread and the lower setting thread are opposite in rotation direction.
As a preferred embodiment, the internal flow sensor is an electromagnetic flow meter, the setting thread is a trapezoidal thread, and the sealing member is a compression rubber cylinder.
The use method of the integrated flow-collecting bridge type testing, adjusting, inspecting, sealing and injecting system comprises the step that the integrated flow-collecting bridge type testing, adjusting, inspecting, sealing and injecting system is installed in a layered water injection well.
As a possible embodiment, the measuring and adjusting method comprises the following operation steps of using a cable to lower the underground measuring and adjusting instrument from the inside of an oil pipe to a position above a water distributor needing measuring and adjusting, and operating and starting a mandrel driving motor or a rotating mechanism driving motor through a ground control unit:
a. starting a mandrel driving motor to drive a mandrel to rotate, so that an axial positioning mechanism extends out, and a downhole testing and adjusting instrument is lowered, so that a positioning claw of the axial positioning mechanism falls on the upper end of a rotary cylinder of the water distributor;
b. starting a rotating mechanism driving motor to drive the rotating mechanism to rotate, so that a rotating arm of the rotating mechanism is inserted into the anti-rotation groove, the rotating mechanism is circumferentially fixed by a lower connector connected with an oil pipe, other parts of the underground testing and adjusting instrument except the rotating mechanism rotate under the reaction force of the rotating mechanism, and a torsion arm of a circumferential positioning mechanism is automatically inserted into a rotating groove of the rotating cylinder and drives the rotating cylinder to rotate;
c. the mandrel driving motor continues to rotate to drive the mandrel to rotate, and three sealing elements are set;
d. adjusting the injection amount: starting a rotating mechanism to drive a motor to drive a rotating cylinder to rotate, and adjusting the relative overlapping area of an injection allocation inner hole and an injection allocation outer hole to adjust the injection allocation amount;
e. and (3) seal checking and pressure measuring operation: starting a rotating mechanism to drive a motor to drive a rotating cylinder to rotate, so that a pressure measuring inner hole is opposite to a pressure measuring outer hole, and at the moment, a pressure measuring channel is opened and a water distribution channel is closed; adjusting water injection quantity and water injection pressure on the ground, and measuring pressure P of corresponding oil layer of the water distributor through an external pressure sensorOuter coverMeasuring the pressure P in the oil pipe by means of an internal pressure sensorInner part。
Compared with the prior art, the technical advantages of the invention at least comprise:
1. the device of the invention is provided with three sealing parts and a setting mechanism thereof on the underground measuring and adjusting instrument, and is provided with a water distribution channel and a pressure measuring channel which are matched with each other on a matched water distributor, thereby not only carrying out the layered water injection measuring and adjusting operation, but also carrying out the pressure measuring operation and the seal checking operation on a certain water injection layer. The underground measuring and adjusting instrument can complete all operations by one-time descending, and has the advantages of high operation timeliness, simpler process and less operation cost.
2. According to the device, the internal flow measuring unit and the internal flow channel are arranged on the underground testing and adjusting instrument and are matched with the water distributor, so that the flow concentration type test is realized, the test precision is high, and the lower limit of the test is low.
3. The water distributor of the invention designs a cock valve type cylindrical linkage switch mechanism valve core, has few parts and reliable work, and can realize the switch of a water distribution channel and a pressure measuring channel by rotating the rotary cylinder of the underground measuring and adjusting instrument.
4. Because the bridge type channel is arranged on the water distributor, when one oil layer is used for measuring and adjusting or measuring pressure, the water injection of other oil layers is not influenced, and the accuracy of flow adjustment is high.
5. Because the packing part uses the compression type rubber cylinder, the packing sealing pressure is high, and the work is reliable.
Drawings
A more complete appreciation of the invention and many of the attendant advantages thereof will be readily obtained as the same becomes better understood by reference to the following detailed description when considered in connection with the accompanying drawings, wherein the accompanying drawings are included to provide a further understanding of the invention and form a part of this specification, and the illustrated embodiments and descriptions thereof are intended to illustrate and not limit the invention. Wherein:
fig. 1 is a schematic structural diagram of an integrated flow-collecting bridge type measuring, adjusting, inspecting, sealing and dispensing system.
Fig. 2 is a partially enlarged view of fig. 1.
Fig. 3 is a schematic view of the structure of the water distributor according to the invention (water distribution channel open in the figure).
Fig. 4 is a sectional view a-a in fig. 3.
Fig. 5 is a schematic view of the structure of the water distributor of the present invention (showing the open state of the pressure measuring passage).
Fig. 6 is a sectional view B-B of fig. 5.
FIG. 7 is a schematic view of another embodiment of the water distributor switch positioning of the present invention.
FIG. 8 is a schematic view of a spin basket configuration illustrating circular seal ring grooves.
FIG. 9 is a schematic diagram of the downhole tool configuration, and this figure is also a cross-sectional view B-B of FIG. 10.
Fig. 10 is a sectional view taken along line a-a of fig. 9.
Fig. 11 is a cross-sectional view C-C of fig. 9.
FIG. 12 is a schematic diagram of another preferred embodiment downhole tool.
In the figure:
101-ground control unit, 102-cable, 103-oil pipe, 104-casing, 105-downhole measuring and adjusting instrument, 106-packer II, 107-water distributor II, 108-bridge channel, 109-oil layer II, 110-packer III, 111-water distribution channel, 112-pressure measuring channel, 113-linkage switch,
120-external flow rate test unit, 121-internal pressure sensor, 122-internal flow rate test unit, 123-upper sealing member, 124-middle sealing member, 125-lower sealing member, 126-external pressure sensor, 127-internal pressure test channel, 128-internal flow channel, 129-external pressure test channel,
301-upper joint, 302-rotary cylinder, 303-radial screw, 304-fixed shoulder, 305-positioning screw, 306-switch main body, 307-injection allocation inner hole, 308-valve seat, 309-injection allocation outer hole, 310-valve rod, 311-spring, 312-blind plug, 313-fixed nut, 314-lower joint, 315-anti-rotation sleeve, 316-lower bypass hole, 317-anti-rotation groove, 318-rotation groove, 319-injection allocation hole sealing ring, 320-first back ring, 321-pressure hole sealing ring, 322-second back ring, 323-pressure measurement outer hole, 324-pressure measurement inner hole, 3051-positioning screw II, 401-upper bypass hole, 3031-radial screw II,
900-control unit, 901-internal flow nipple, 902-internal flow inlet, 903-internal flow housing, 904-internal flow sensor, 905-upper internal flow annulus, 906-mandrel, 907-internal flow side hole, 908-positioning nipple, 909-axial positioning mechanism, 910-axial positioning thread, 911-circumferential positioning mechanism, 912-upper setting thread, 913-upper setting block, 914-upper crossing nail, 915-upper pressing ring, 916-upper crossing groove, 917-middle setting block, 918-middle crossing nail, 919-middle pressing ring, 920-middle setting thread, 921-sealing nipple, 922-lower setting thread, 923-lower crossing groove, 924-lower setting block, 925-lower crossing nail, 926-lower pressing ring, 927-pressure testing nipple, 928-external pressure test side hole, 929-lower motor sleeve, 930-mandrel driving motor, 931-rotating mechanism driving motor, 932-rotating mechanism, 933-lower internal flow annulus, 934-lower pressure transmission annulus, 2000-positioning unit, 3000-packing unit,
1201-upper motor cover.
Detailed Description
In the present specification and claims, the terms "upper" and "lower" in terms of positional relationship are described in terms of positional relationship in a state where the apparatus is run into a well. When the relation of inside, outside or inside and outside of the pipe is described, the small radius is taken as inside or inside in the radial direction, and the large radius is taken as outside. The parts with seals in the drawings are shown in the figures and are not described in detail in the following description.
In order to make the technical solutions and advantages of the present invention clearer, the following will describe embodiments of the present invention in further detail with reference to the accompanying drawings.
Referring to fig. 1 and fig. 2, the invention is a general view of the integrated flow-concentrating bridge type testing, regulating, sealing and dispensing system, which comprises two parts of a downhole separate-zone water injection string and a testing and regulating system.
The downhole separate layer water injection pipe column is arranged in a casing 104 and comprises a packer and a water distributor which are connected by an oil pipe 103, one water distributor is arranged corresponding to each oil layer, one packer is arranged above each oil layer, as shown in the figure, a second water distributor 107 and a second packer 106 are arranged corresponding to a second oil layer 109, and a third packer 110 is arranged below the second oil layer and corresponding to a next oil layer. Fig. 1 shows only three oil layers for separate injection, and more oil layers for separate injection pipe column structures are added corresponding to the oil layers. Generally, a check valve is also installed at the lower end of the separate layer water injection string. In addition to the water distributor of the present invention, other downhole tools for zonal injection strings are known in the art.
The tone measuring system includes a surface control unit 101 installed at the surface, a cable 102, and a downhole tone meter 105.
The ground control unit 101 is used for receiving and displaying test data uploaded by the downhole testing and adjusting instrument, including flow and pressure data, and sending a command for starting or stopping the rotation of the motor to the downhole testing and adjusting instrument.
Electrical cables are known in the art.
The water distributor is provided with a bridge type channel 108, a water distribution channel 111, a pressure measuring channel 112 and a linked switch 113; the linked switch simultaneously controls the water distribution channel and the pressure measuring channel, so that the water distribution channel and the pressure measuring channel are always in a one-on one-off or full-off state; the ganged switch is driven by a circumferential positioning mechanism 911 of the underground measuring and adjusting instrument;
the periphery of the underground measuring and adjusting instrument is provided with three sealing parts, namely an upper sealing part 123, a middle sealing part 124 and a lower sealing part 125, the sealing parts seal and separate the annular space between the water distributor and the underground measuring and adjusting instrument, and the water distribution channel 111 and the pressure measurement channel 112 of the water distributor are respectively positioned between the two sealing parts; the underground measuring and adjusting instrument is also provided with an inner flow channel 128, the inlet of the inner flow channel 128 is positioned above the upper sealing part 123, the outlet of the inner flow channel 128 is arranged between the upper sealing part 123 and the middle sealing part 124, and the outlet of the inner flow channel 128 is communicated with the water distribution channel 111 of the water distributor;
the underground measuring and adjusting instrument is also provided with an external pressure sensor 126, the external pressure sensor 126 tests the pressure between the middle sealing part 124 and the lower sealing part 125 through an external pressure testing channel 129, and the external pressure testing channel 129 is communicated with the pressure testing channel 112 of the water distributor; when the pressure sensing channel is open, the external pressure sensor 126 measures the pressure in the annulus outside the distributor. If the packers above and below the oil layer are well sealed, the pressure of the annulus outside the water distributor is the pressure of the oil layer.
The underground testing and adjusting instrument is also provided with an internal pressure sensor 121, and the internal pressure sensor 121 tests the pressure in the oil pipe through an internal pressure testing channel 127;
the underground testing and adjusting instrument is also provided with an inner flow testing unit 122 and an inner flow channel 128, wherein the inner flow testing unit is used for testing the water injection quantity flowing through the inner flow channel (the water injection quantity refers to daily water injection quantity in engineering, and the same is used below), namely the water injection quantity of an oil layer corresponding to the water distributor;
the downhole testing and adjusting instrument is further provided with an external flow testing unit 120, the external flow testing unit is located above the bridge-type channel 108 of the water distributor, the external flow testing unit tests flow passing through the annular space between the external flow testing unit and the oil pipe, and the measured flow is the total water injection amount of an oil layer corresponding to the water distributor and an oil layer below the water distributor.
Referring to fig. 3 and 5, the water distributor is provided with a switch main body 306, the switch main body is provided with a central hole, an axial upper bypass hole 401 is arranged outside the central hole, and a radial injection distribution outer hole 309 and a pressure measurement outer hole 323 are arranged up and down on the side wall of the switch main body in a circumferential direction at a central angle of 90-180 degrees; the circumferential directions of the injection allocation outer hole 309 and the pressure measurement outer hole 323 of the water distributor are optimally arranged in a 180-degree central angle. The dispensing outer orifice 309 may be a straight radial orifice, like the manometric outer orifice. In order to prevent the formation water from flowing back into the water distributor when the injection is stopped, a check valve may be provided in the channel of the injection allocation outer hole 309, as shown in fig. 3, as a possible example, the check valve is axially arranged in the side wall of the switch body 306, the flow channel of the injection allocation outer hole 309 has two right-angle turns, and a valve seat 308 is provided in the axial flow channel thereof, the structure of the check valve is known in the art, and the check valve is a component comprising: a valve stem 310, a spring 311 and a blind 312.
The rotating cylinder 302 is coaxially installed in the central hole of the switch main body 306 and is axially fixed, the side wall of the rotating cylinder is provided with a radial injection allocation inner hole 307 and a pressure measurement inner hole 324, the injection allocation inner hole 307 and the pressure measurement inner hole 324 are arranged on the same radial line, and the distance and the axial height between the injection allocation inner hole 307 and the pressure measurement inner hole 324 respectively correspond to the injection allocation outer hole 309 and the pressure measurement outer hole 323; a injection allocation hole sealing ring 319 is arranged on the outer wall of the rotary cylinder around the injection allocation inner hole 307; a pressure measuring hole sealing ring 321 is provided on the outer wall of the rotary cylinder around the pressure measuring hole 324. The cross-section of the dispensing hole sealing ring 319 and the pressure measuring hole sealing ring 321 may be "O" shaped, rectangular or trapezoidal, and the planar shape thereof may be circular, oval, square, polygonal, etc., and as a preferred embodiment, the cross-sectional shape thereof is trapezoidal and the planar shape thereof is circular, as shown in fig. 3 and 8.
The injection allocation inner hole 307 and the injection allocation outer hole 309 jointly form a water distribution channel 111, and the pressure measurement inner hole 324 and the pressure measurement outer hole 323 jointly form a pressure measurement channel 112.
The linkage switch 113 comprises the following parts and structures: the rotary cylinder 302, a dispensing inner hole 307 and a pressure measuring inner hole 324, a dispensing hole sealing ring 319 and a pressure measuring hole sealing ring 321 which are arranged on the rotary cylinder, and the switch main body 306, a dispensing outer hole 309 and a pressure measuring outer hole 323 which are arranged on the switch main body. The gang switch 113 is a cock-type switch, and the water distribution passage 111 and the pressure measurement passage 112 are simultaneously controlled by rotating the rotary cylinder 302.
The upper part of the rotary cylinder 302 is provided with a rotary groove 318, and a torsion arm of a circumferential positioning mechanism 911 of the downhole measuring and adjusting instrument is inserted into the rotary groove 318 to drive the rotary cylinder 302 to rotate. The rotating cylinder 302 rotates to adjust the relative overlapping area of the injection allocation inner hole 307 and the injection allocation outer hole 309 to adjust the injection allocation amount, and also can close the water distribution channel 111 and open the pressure measurement channel 112.
The rotary drum 302 may be rotated by controlling the rotation angle using a downhole tool. As a preferred example, the rotating barrel 302 of the depicted water distributor may also be provided with a rotational detent mechanism in order to provide an indication of the operation of the surface control unit.
As a possible example, see fig. 4 and 6, which show the optimal arrangement of the injection outer hole 309 and the pressure outer hole 323 of the described water distributor with a 180 ° central angle in the circumferential direction. The rotary positioning mechanism comprises a radial screw 303 arranged on the rotary cylinder 302, and a positioning screw 305 and a second positioning screw 3051 axially arranged on the switch main body 306, when the radial screw 303 rotates to contact the positioning screw 305, the injection allocation inner hole 307 is oppositely communicated with the injection allocation outer hole 309, the pressure measurement inner hole 324 is not communicated with the pressure measurement outer hole 323, at the moment, the water distribution channel 111 is opened, and the pressure measurement channel 112 is closed; when the radial screw 303 rotates to contact the second positioning screw 3051, the injection allocation inner hole 307 is not communicated with the injection allocation outer hole 309, the pressure measurement inner hole 324 is relatively communicated with the pressure measurement outer hole 323, at the moment, the water distribution channel 111 is closed, and the pressure measurement channel 112 is opened.
As a possible example, see fig. 7, which shows the described optimal arrangement of the injection outer hole 309 and pressure outer hole 323 of the water distributor with a 180 ° central angle in the circumferential direction. The rotary positioning mechanism comprises a radial screw 303 and a radial screw 3031 which are arranged on the rotary cylinder 302, and a positioning screw 305 which is axially arranged on the switch main body 306. When the radial screw 303 rotates to contact the positioning screw 305, the injection allocation inner hole 307 is relatively communicated with the injection allocation outer hole 309, the pressure measurement inner hole 324 is not communicated with the pressure measurement outer hole 323, at the moment, the water distribution channel 111 is opened, and the pressure measurement channel 112 is closed; when the radial screw 3031 rotates to contact the positioning screw 305, the injection allocation inner hole 307 is not communicated with the injection allocation outer hole 309, the pressure measurement inner hole 324 is oppositely communicated with the pressure measurement outer hole 323, and at the moment, the water distribution channel 111 is closed and the pressure measurement channel 112 is opened.
As a preferable example, in order to reduce the rotation resistance of the rotary cylinder 302, a first back ring 320 is arranged on the outer wall of the rotary cylinder 302 and circumferentially symmetrical to the injection hole sealing ring 319, and a second back ring 322 is arranged on the outer wall of the rotary cylinder 302 and circumferentially symmetrical to the pressure hole sealing ring 321. The shape of the first back ring and the second back ring is completely the same as that of the injection hole sealing ring and the pressure measuring hole sealing ring.
The lower joint 314 is fixedly connected with the switch main body 306, a lower joint center hole is arranged in the lower joint, the anti-rotation sleeve 315 is fixedly arranged in the lower joint center hole and is coaxial with the rotary cylinder 302, an anti-rotation groove 317 is arranged on the side wall of the anti-rotation sleeve 315, and a rotating arm of a rotating mechanism 932 of the down-hole measuring and adjusting instrument is inserted into the anti-rotation groove 317; a lower bypass hole 316 is provided around the lower joint center hole.
The upper bypass hole 401 and the lower bypass hole 316 are part of the bridge-type channel 108, and during measurement and adjustment operation, injected water flows through the upper bypass hole and the lower bypass hole and enters an oil layer below the water distributor of the stage.
Referring to fig. 9, 10 and 11, the downhole logging instrument includes an internal flow testing unit 122, a positioning unit 2000, a packing unit 3000 and a pressure testing nipple 927, which are sequentially connected from top to bottom. The internal flow test unit comprises an internal flow nipple 901, the positioning nipple 908 comprised by the positioning unit, the packing nipple 921 comprised by the packing unit and the pressure test nipple 927 which are all provided with coaxial central through holes, and the mandrel 906 passes through the central through holes. The mandrel 906 is connected with the mandrel driving motor 930 through a coupler; the mandrel is tubular and has an electrical wire passing therethrough. In order to prevent the core shaft from twisting off the wires passing through it when it is rotated, as a preferred example, rotating electrical slip rings are mounted at both ends of the core shaft. The structure of the rotating electric slip ring is a known technology, and is referred to a Chinese patent 'bidirectional sealed flow-concentrating type flow regulator', application number 201510973113.4, application date 2015.12.22. The spindle drive motor 930 may be provided at the lower end of the spindle as shown in fig. 9, or may be provided at the upper end of the spindle as shown in fig. 12.
The internal flow test unit 122 comprises an internal flow shell 903 which is sleeved outside the internal flow nipple 901 and forms a sealed cavity, an internal flow sensor 904 is arranged in the sealed cavity, an upper internal flow annulus 905 is formed between the mandrel 906 and a central through hole of the internal flow nipple 901, and an internal flow inlet 902 arranged at the upper part of the internal flow nipple 901 is communicated with the upper internal flow annulus 905. The internal flow sensor 904 may be electromagnetic, vortex street, ultrasonic, etc., and among them, an electromagnetic flow sensor is preferable. Typically, the probe of the flow sensor is intended to be in contact with the injected water through the inner wall of the sealed cavity, and a flow sensor downhole in a water injection well is known in the art.
The packing unit 3000 comprises three packing members (an upper packing member 123, a middle packing member 124 and a lower packing member 125) and a setting mechanism thereof, wherein the setting mechanism comprises setting threads (an upper setting thread 912, a middle setting thread 920 and a lower setting thread 922) arranged on a mandrel 906, setting blocks (an upper setting block 913, a middle setting block 917 and a lower setting block 924) connected with the mandrel through the setting threads, extrusion rings (a lower extrusion ring 915, a middle extrusion ring 919 and a lower extrusion ring 926) which are sleeved on the periphery of a packing nipple 921 together with the packing members, and penetrating nails (an upper penetrating nail 914, a middle penetrating nail 918 and a lower penetrating nail 925) for fixing the extrusion rings and the setting blocks; a penetrating groove (an upper penetrating groove 916 and a lower penetrating groove 923) is formed in the side wall of the packing nipple 921, and a penetrating nail penetrates through the penetrating groove to fixedly connect the packing block and the extrusion ring; the central through hole of the packing nipple 921 is a shoulder hole with diameter expanded up and down, the mandrel 906 and the upper and lower diameter expanded parts of the central through hole respectively form a lower inner flow annulus 933 and a lower pressure transmission annulus 934, and the setting blocks (913, 917, 924) are respectively arranged in the lower inner flow annulus 933 and the lower pressure transmission annulus 934.
The setting mechanisms of the three sealing members are the same, except that the mounting positions of the sealing members are different, the moving and extruding directions of the setting mechanisms are different, and the rotating direction of the setting threads 920 is matched with the moving direction of the setting block, as in the setting mechanism of the upper sealing member in fig. 9, during the setting process, the mandrel rotates, and the upper setting threads push the upper setting block and the upper extruding ring to compress the upper sealing member upwards. Both the middle and lower enclosures in fig. 9 are compressed downward.
As a possible example, referring to fig. 9, the upper and middle seating blocks 913, 917 are installed in the lower inner flow annulus 933, and the lower seating block 924 is installed in the lower pressure annulus 934; the upper setting thread 912 and the middle setting thread 920 are counter-rotating.
As another possible example, referring to fig. 12, the upper setting block 913 is installed in a lower inner flow annulus 933, and the middle setting block 917 and the lower setting block 924 are installed in a lower pressure annulus 934; the middle setting thread 920 and the lower setting thread 922 are oppositely threaded.
As a preferred embodiment, in order to increase the transmission efficiency, the setting thread is preferably a trapezoidal thread.
The sealing element can be a leather cup or a compression rubber cylinder, and the compression rubber cylinder is the best.
Referring to fig. 9, the inner flow channel 128 is a flow channel through which the injected water enters along the arrow of the inner flow inlet 902, and includes: an inner flow inlet 902, an upper inner flow annulus 905, inner flow side holes 907, a lower inner flow annulus 933, and upper pass-through slots 916.
The pressure testing short section 927 is provided with an external pressure testing side hole 928, the upper end of the external pressure testing side hole is communicated with a lower pressure transmission annulus 934, and the lower end of the external pressure testing side hole is provided with an external pressure sensor 126; the outer pressure test side holes 928 and the lower pressure annulus 934 together form the outer pressure test channel 129.
The internal pressure sensor 121 may also be installed at the upper part of the downhole logging tool, as shown in fig. 12, and an internal pressure test passage 127 is provided on the sidewall of the upper motor casing 1201 and the internal pressure sensor 121 is installed.
The lower motor sleeve 929 is connected below the pressure test short section 927, a rotating mechanism driving motor 931 arranged in the lower motor sleeve 929 is connected with a rotating mechanism 932 through a coupler, the rotating mechanism is arranged at the lowest end of the underground testing and adjusting instrument, and a speed reducing mechanism can be connected between the coupler and the rotating mechanism according to the requirements of rotating speed and torque. The rotating mechanism and the speed reducing mechanism are known technologies, and refer to the Chinese patent 'bidirectional sealed flow-collecting type flow regulator', application number 201510973113.4, application date 2015.12.22.
The test data of the underground testing and adjusting instrument can be directly transmitted to the ground control unit 101 through a cable, and the ground control unit can also directly start and stop a motor of the underground testing and adjusting instrument. As a preferred example, a control unit 900 may be disposed at an upper portion of the down-hole measurement instrument, and is configured to collect test signals of the flow sensor and the pressure sensor, transmit the obtained test signals to the surface control unit through a cable, and receive an instruction from the surface control unit to start and stop the corresponding motors.
The external flow rate testing unit 120 may be connected to the downhole testing and adjusting instrument as a flow rate testing short section, or may be integrated with the downhole testing and adjusting instrument as a part of the downhole testing and adjusting instrument. The external flow testing unit can select an electromagnetic external flow meter.
The invention discloses a using method of an integrated flow-collecting bridge type measuring, adjusting, checking and injecting system, wherein the measuring and adjusting method comprises the following steps of using a cable to lower a downhole measuring and adjusting instrument from the inside of an oil pipe to a position above a water distributor needing measuring and adjusting, operating and starting a mandrel driving motor 930 or a rotating mechanism driving motor 931 through a ground control unit, and further comprising the following operation procedures:
a. starting a mandrel driving motor to drive a mandrel to rotate, so that an axial positioning mechanism extends out, and a downhole testing and adjusting instrument is lowered, so that a positioning claw of the axial positioning mechanism falls on the upper end of a rotary cylinder of the water distributor;
b. starting a rotating mechanism driving motor to drive the rotating mechanism to rotate, so that a rotating arm of the rotating mechanism is inserted into an anti-rotation groove 317, the rotating mechanism is circumferentially fixed by a lower connector connected with an oil pipe at the moment, other parts of the underground testing and adjusting instrument except the rotating mechanism rotate under the reaction force of the rotating mechanism, and a torsion arm of a circumferential positioning mechanism 911 is automatically inserted into a rotating groove 318 of a rotating cylinder and drives the rotating cylinder to rotate;
c. the mandrel driving motor continues to rotate to drive the mandrel to rotate, and three sealing elements are set;
d. adjusting the injection amount: starting a rotating mechanism to drive a motor to drive a rotating cylinder to rotate, and adjusting the relative overlapping area of an injection allocation inner hole 307 and an injection allocation outer hole 309 to adjust the injection allocation amount;
e. and (3) seal checking and pressure measuring operation: starting a rotating mechanism to drive a motor to drive a rotating cylinder to rotate, so that a pressure measuring inner hole 324 is opposite to a pressure measuring outer hole 323, and at the moment, a pressure measuring channel 112 is opened, and a water distribution channel 111 is closed; adjusting water injection quantity and water injection pressure on the ground, and measuring pressure P of corresponding oil layer of the water distributor through an external pressure sensorOuter coverMeasuring the pressure P in the oil pipe by means of an internal pressure sensorInner part。
The tested flow and pressure can be drawn into flow-time and pressure-time curves, and the sealing state of the packer can be judged through comparative analysis.
The existing test cable has the problems of low strength, high cost, insufficient insulation performance and the like, and a special test cable is specially developed for the purpose. The cable 102 comprises three layers from outside to inside, wherein the first layer is a continuous steel pipe, the second layer is an insulating layer, the center is a copper conductor, and the insulating layer comprises polytetrafluoroethylene at the outer layer and polypropylene at the inner layer. As a preferred embodiment, the continuous steel pipe is a stainless steel material 2507, which has a thickness of 0.7mm and an outer diameter of 4 mm. In one possible implementation, the copper conductor is an enameled single-core copper conductor.
It will be apparent that those skilled in the art can make many modifications and variations based on the spirit of the present invention.
Claims (17)
1. An integrated flow-collecting bridge type testing, adjusting, sealing and injecting system comprises a water distributor and an underground testing and adjusting instrument, and is characterized in that,
the water distributor is provided with a bridge type channel (108), a water distribution channel (111), a pressure measuring channel (112) and a linked switch (113); the linked switch simultaneously controls the water distribution channel and the pressure measuring channel, so that the water distribution channel and the pressure measuring channel are always in a one-on one-off or full-off state; the linkage switch is driven by a circumferential positioning mechanism (911) of the underground measuring and adjusting instrument;
the periphery of the underground measuring and adjusting instrument is provided with three sealing parts (123, 124 and 125), the sealing parts seal and separate an annular space between the water distributor and the underground measuring and adjusting instrument, and a water distribution channel (111) and a pressure measurement channel (112) of the water distributor are respectively positioned between two sealing parts; the underground measuring and adjusting instrument is also provided with an inner flow channel (128), the inlet of the inner flow channel (128) is positioned above the upper sealing part (123), the outlet of the inner flow channel (128) is arranged between the upper sealing part (123) and the middle sealing part (124), and the outlet of the inner flow channel (128) is communicated with a water distribution channel (111) of the water distributor;
the underground measuring and adjusting instrument is also provided with an external pressure sensor (126), the external pressure sensor (126) tests the pressure between the middle sealing part (124) and the lower sealing part (125) through an external pressure testing channel (129), and the external pressure testing channel (129) is communicated with a pressure measuring channel (112) of the water distributor;
the underground testing and adjusting instrument is also provided with an internal pressure sensor (121), and the internal pressure sensor (121) tests the pressure in the oil pipe through an internal pressure testing channel (127);
the underground testing and adjusting instrument is also provided with an inner flow testing unit (122), and the inner flow testing unit tests the water injection quantity flowing through the inner flow channel;
the underground testing and adjusting instrument is further provided with an external flow testing unit (120), the external flow testing unit is located above a bridge type channel (108) of the water distributor, and the external flow testing unit tests flow flowing through the external flow testing unit and the annular space of the oil pipe.
2. The integrated flow-concentrating bridge type metering, testing, sealing and dispensing system of claim 1, wherein the water distributor is provided with a switch body (306) which is provided with a central hole, an axial upward bypass hole (401) is arranged outside the central hole, and a radial injection distribution outer hole (309) and a pressure measurement outer hole (323) are arranged up and down on the circumferential direction of the side wall of the switch body at a central angle of 90-180 degrees;
the rotating cylinder (302) is coaxially installed in the central hole and is axially fixed, a radial injection allocation inner hole (307) and a pressure measurement inner hole (324) are formed in the side wall of the rotating cylinder, the injection allocation inner hole (307) and the pressure measurement inner hole (324) are arranged on the same radial line, and the distance and the axial height between the injection allocation inner hole (307) and the pressure measurement inner hole (324) correspond to the injection allocation outer hole (309) and the pressure measurement outer hole (323) respectively; a injection allocation hole sealing ring (319) is arranged on the outer wall of the rotary cylinder around the injection allocation inner hole (307); a pressure measuring hole sealing ring (321) is arranged on the outer wall of the rotary cylinder around the pressure measuring inner hole (324);
a rotating groove (318) is formed in the upper portion of the rotating cylinder (302), and a torsion arm of a circumferential positioning mechanism (911) of the downhole measuring and adjusting instrument is inserted into the rotating groove (318);
the lower joint (314) is fixedly connected with the switch main body (306), a lower joint center hole is formed in the lower joint, the anti-rotation sleeve (315) is fixedly installed in the lower joint center hole and is coaxial with the rotary cylinder (302), an anti-rotation groove (317) is formed in the side wall of the anti-rotation sleeve (315), and a rotating arm of a rotating mechanism (932) of the underground measuring and adjusting instrument is inserted into the anti-rotation groove (317); and a lower bypass hole (316) is arranged around the central hole of the lower joint.
3. The integrated flow-concentrating bridge type metering, testing and sealing dispensing system of claim 2, wherein the dispensing outer hole (309) and the pressure measuring outer hole (323) of the water distributor are circumferentially arranged at a 180-degree central angle.
4. The integrated flow-concentrating bridge type metering, regulating, inspecting and dispensing system as claimed in claim 2, wherein the rotating cylinder (302) of the water distributor is provided with a rotational positioning mechanism.
5. The integrated flow-concentrating bridge type metering, testing and sealing dispensing system of claim 4, wherein the rotary positioning mechanism comprises a radial screw (303) mounted on the rotary cylinder (302), and a positioning screw (305) and a second positioning screw (3051) axially mounted on the switch body (306), when the radial screw (303) is in rotary contact with the positioning screw (305), the water distribution channel (111) is opened, the pressure measurement channel (112) is closed, and when the radial screw (303) is in rotary contact with the second positioning screw (3051), the water distribution channel (111) is closed, and the pressure measurement channel (112) is opened.
6. The integrated flow-concentrating bridge type metering, testing, sealing and dispensing system according to claim 4, wherein the rotary positioning mechanism comprises a radial screw (303) and a radial screw II (3031) which are installed on the rotary cylinder (302), and a positioning screw (305) which is axially installed on the switch main body (306), when the radial screw (303) is in rotary contact with the positioning screw (305), the water distribution channel (111) is opened, the pressure measurement channel (112) is closed, when the radial screw II (3031) is in rotary contact with the positioning screw (305), the water distribution channel (111) is closed, and the pressure measurement channel (112) is opened.
7. The integrated manifold bridge type metering, regulating, inspecting and dispensing system according to claim 2, wherein a first back ring (320) is arranged on the outer wall of the rotary cylinder (302) and circumferentially symmetrical to the injection allocation hole sealing ring (319), and a second back ring (322) is arranged on the outer wall of the rotary cylinder (302) and circumferentially symmetrical to the pressure measurement hole sealing ring (321).
8. The integrated manifold bridge type metering, regulating, testing, sealing and dispensing system of claim 2, wherein a single flow valve is disposed in the dispensing outer orifice (309) in the sidewall of said switch body (306).
9. The integrated flow-concentrating bridge type testing, adjusting, sealing and dispensing system according to claim 1, wherein the downhole testing and adjusting instrument comprises an internal flow testing unit (122), a positioning unit (2000), a packing unit (3000) and a pressure testing nipple (927) which are sequentially connected from top to bottom, the internal flow nipple (901) included in the internal flow testing unit, the positioning nipple (908) included in the positioning unit, the packing nipple (921) included in the packing unit and the pressure testing nipple (927) are all provided with coaxial central through holes, a mandrel (906) passes through the central through hole, and the mandrel (906) is connected with a mandrel driving motor (930) through a coupler; the mandrel is tubular and is provided with an electric wire passing through;
the internal flow testing unit (122) comprises an internal flow shell (903) which is sleeved outside the internal flow nipple (901) and forms a sealed cavity, an internal flow sensor (904) is arranged in the sealed cavity, an upper internal flow annulus (905) is formed between a mandrel (906) and a central through hole of the internal flow nipple (901), and an internal flow inlet (902) which is communicated with the upper internal flow annulus (905) is formed in the upper part of the internal flow nipple (901);
the positioning unit (2000) comprises an axial positioning mechanism (909) and a circumferential positioning mechanism (911) which are installed on the positioning short section (908), and an axial inner flow side hole (907) is arranged on the side wall of the positioning short section (908) and is used as a part of the inner flow channel (128);
the packing unit (3000) comprises three packing parts (123, 124, 125) and a setting mechanism thereof, wherein the setting mechanism comprises setting threads (912, 920, 922) arranged on a mandrel (906), setting blocks (913, 917, 924) connected with the mandrel through the setting threads, extrusion rings (915, 919, 926) sleeved on the periphery of a packing short section (921) together with the packing parts, and penetrating nails (914, 918, 925) for fixing the extrusion rings and the setting blocks; a penetrating groove (916, 923) is formed in the side wall of the packing nipple (921), and a penetrating nail penetrates through the penetrating groove to fixedly connect the packing block with the extrusion ring; the central through hole of the packing nipple (921) is a shoulder hole with the diameter expanded up and down, the mandrel (906) and the diameter expanded part of the upper part and the lower part of the central through hole respectively form a lower inner flow annular space (933) and a lower pressure transmission annular space (934), and the setting blocks (913, 917 and 924) are respectively arranged in the lower inner flow annular space (933) and the lower pressure transmission annular space (934); the rotating direction of the setting thread (920) is adapted to the moving direction of the setting block;
the pressure testing short section (927) is provided with an external pressure testing side hole (928), the upper end of the external pressure testing side hole is communicated with the lower pressure transmission annulus (934), and the lower end of the external pressure testing side hole is provided with an external pressure sensor (126); the pressure test short section (927) is also provided with an internal pressure test channel (127), the upper end opening of the internal pressure test channel is arranged on the outer wall of the pressure test short section, and the lower end is provided with an internal pressure sensor (121);
the lower motor sleeve (929) is connected below the pressure testing short section (927), a rotating mechanism driving motor (931) installed in the lower motor sleeve (929) is connected with a rotating mechanism (932) through a coupler, and the rotating mechanism is arranged at the lowest end of the underground testing and adjusting instrument.
10. The integrated manifold bridge metering, testing, sealing and dispensing system of claim 9, wherein the upper and middle seating blocks (913, 917) are installed in the lower inner flow annulus (933), and the lower seating block (924) is installed in the lower pressure transfer annulus (934); the upper setting thread (912) and the middle setting thread (920) are opposite in rotation direction.
11. The integrated manifold bridge metering, testing, sealing and dispensing system of claim 9, wherein the upper seating block (913) is installed in the lower inner flow annulus (933), and the middle seating block (917) and the lower seating block (924) are installed in the lower pressure transfer annulus (934); the middle setting thread (920) and the lower setting thread (922) are opposite in rotation direction.
12. The integrated, manifold bridge, metering, testing, sealing, and dispensing system of claim 9, wherein said internal flow sensor (904) is an electromagnetic flow meter.
13. The integrated manifold bridge type metering, regulating, inspecting and dispensing system according to claim 9, wherein the setting thread is a trapezoidal thread.
14. The integrated manifold bridge type metering, testing, sealing and dispensing system of claim 9, wherein said sealing element is a compression-type rubber cartridge.
15. The integrated flow-concentrating bridge type metering, testing, sealing and dispensing system of claim 1, further comprising a cable (102), wherein the cable comprises three layers from outside to inside, the first layer is a continuous steel pipe, the second layer is an insulating layer, the center is a copper wire, and the insulating layer comprises an outer layer of polytetrafluoroethylene and an inner layer of polypropylene; the continuous steel pipe is made of a stainless steel material 2507, the thickness of the continuous steel pipe is 0.7mm, and the outer diameter of the continuous steel pipe is 4 mm; the copper conductor is an enameled single-core copper conductor.
16. The use method of the integrated flow-collecting bridge type testing, adjusting, inspecting, sealing and injecting system is characterized by comprising the step of installing the integrated flow-collecting bridge type testing, adjusting, inspecting, sealing and injecting system in a separate-layer water injection well.
17. The use method of the integrated flow-concentrating bridge type metering, seal-testing and dispensing system according to claim 16, wherein the metering method comprises the following operation steps of lowering the downhole metering instrument from the inside of the oil pipe to a position above a water distributor needing to be measured and adjusted by a cable, and operating and starting the mandrel driving motor (930) or the rotating mechanism driving motor (931) by a ground control unit:
a. starting a mandrel driving motor to drive a mandrel to rotate, so that an axial positioning mechanism extends out, and a downhole testing and adjusting instrument is lowered, so that a positioning claw of the axial positioning mechanism falls on the upper end of a rotary cylinder of the water distributor;
b. starting a rotating mechanism driving motor to drive the rotating mechanism to rotate, so that a rotating arm of the rotating mechanism is inserted into an anti-rotation groove (317), the rotating mechanism is circumferentially fixed by a lower connector connected with an oil pipe at the moment, other parts of the underground measuring and adjusting instrument except the rotating mechanism rotate under the reaction force of the rotating mechanism, and a torsion arm of a circumferential positioning mechanism (911) is automatically inserted into a rotating groove (318) of a rotating cylinder and drives the rotating cylinder to rotate;
c. the mandrel driving motor continues to rotate to drive the mandrel to rotate, and three sealing elements are set;
d. adjusting the injection amount: starting a rotating mechanism to drive a motor to drive a rotating cylinder to rotate, and adjusting the relative overlapping area of an injection allocation inner hole (307) and an injection allocation outer hole (309) to adjust the injection allocation amount;
e. and (3) seal checking and pressure measuring operation: starting a rotating mechanism to drive a motor to drive a rotating cylinder to rotate, so that a pressure measuring inner hole (324) is opposite to a pressure measuring outer hole (323), and at the moment, a pressure measuring channel (112) is opened, and a water distribution channel (111) is closed; regulating water injection quantity and pressure on ground, and measuring water distribution by external pressure sensorPressure P of corresponding oil layer of deviceOuter coverMeasuring the pressure P in the oil pipe by means of an internal pressure sensorInner part。
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