CN117569781A - One-sealing double-matching intelligent water injection instrument - Google Patents
One-sealing double-matching intelligent water injection instrument Download PDFInfo
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- CN117569781A CN117569781A CN202410059784.9A CN202410059784A CN117569781A CN 117569781 A CN117569781 A CN 117569781A CN 202410059784 A CN202410059784 A CN 202410059784A CN 117569781 A CN117569781 A CN 117569781A
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- water nozzle
- water
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 297
- 238000002347 injection Methods 0.000 title claims abstract description 96
- 239000007924 injection Substances 0.000 title claims abstract description 96
- 238000007789 sealing Methods 0.000 title claims abstract description 53
- 210000002445 nipple Anatomy 0.000 claims abstract description 278
- 238000005259 measurement Methods 0.000 claims abstract description 31
- 239000011148 porous material Substances 0.000 claims description 25
- 238000009434 installation Methods 0.000 claims description 15
- 230000000149 penetrating effect Effects 0.000 claims description 15
- 230000002093 peripheral effect Effects 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 description 18
- 239000007788 liquid Substances 0.000 description 16
- 238000010276 construction Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
Classifications
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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
-
- 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
-
- 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
- E21B47/06—Measuring temperature or pressure
-
- 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
- E21B47/06—Measuring temperature or pressure
- E21B47/07—Temperature
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Nozzles (AREA)
Abstract
The invention relates to a one-sealing double-configuration intelligent water injection instrument which comprises a split injection assembly, wherein the lower end of the split injection assembly is connected with a packer through an upper adapter, the lower end of the packer is connected with a lower adapter, the lower end of the split injection assembly is provided with a central overflow channel, a first water nozzle nipple and a second water nozzle nipple, and the periphery of the lower end of the split injection assembly is provided with an upper water outlet; the upper adapter is internally provided with a central overflow hole and an upper bridge type hole, and the upper bridge type hole is sleeved with the central overflow hole; the central channel inner gap ring of the packer is sleeved with a central tube, an overflow gap is formed between the central tube and the central channel, and the upper end of the central tube is communicated with the lower end of the central overflow hole; the periphery diameter of lower adapter is provided with the lower floor apopore, and lower adapter's inside is provided with bridge type hole down, and bridge type hole down are gone up respectively to overflow clearance both ends, and the center tube lower extreme inserts down in the adapter and link up with the apopore of lower floor. The invention has the function of layering measurement and can realize two-layer separate injection and setting.
Description
Technical Field
The invention belongs to the technical field of oilfield separated layer water injection, and particularly relates to a one-seal double-configuration intelligent water injection instrument.
Background
The refined layered intelligent separate injection technology is a main yield increasing means of the oil field, can automatically or manually allocate injection allocation amounts of different layers according to requirements, achieves the purpose of water control and yield increase, combines an intelligent separate extraction instrument and a big data algorithm, can also achieve intelligent, automatic and digital management of oil field blocks, and lays a foundation for realizing unattended oil fields.
The existing intelligent separate injection system generally comprises a plurality of intelligent separate injection instruments and packers, and is connected into a tool string to go into a well through an oil pipe nipple.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a one-sealing double-configuration intelligent water injection instrument, which realizes the functions of sealing and double-layer intelligent separate injection by arranging a pair of water nozzle pup joints, has short length of a well tool string, and can replace a tool string of a conventional double-layer intelligent separate injection process to realize double-layer water injection operation.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
an intelligent water injection appearance is joined in marriage to a pair, its characterized in that: the device comprises a dispensing assembly and a packer, wherein the lower end of the dispensing assembly is connected with the packer through an upper adapter, the lower end of the packer is connected with a lower adapter, a central flow passage penetrating through the upper end and the lower end of the dispensing assembly and a first water nozzle nipple and a second water nozzle nipple which are positioned on the radial periphery of the central flow passage are axially arranged at the lower end of the dispensing assembly, and an upper water outlet penetrating through a water outlet of the second water nozzle nipple is arranged on the radial periphery of the lower end of the dispensing assembly; a central overflow hole communicated with a water outlet of the first water nozzle nipple and an upper bridge type hole communicated with the central overflow channel are axially arranged in the upper adapter at intervals, and the central overflow hole is sleeved with the upper bridge type hole ring; the central channel inner gap ring of the packer is sleeved with a central pipe, an overflow gap is formed between the outer peripheral surface of the central pipe and the inner peripheral surface of the central channel, and the upper end of the central pipe is communicated with the lower end of the central overflow hole; the radial periphery of lower crossover sub is provided with the lower floor's apopore that link up its upper end, the axial of lower crossover sub is provided with the bridge type hole down that link up its both ends, bridge type hole and bridge type hole down are gone up respectively in the both ends intercommunication of overflow clearance, the lower extreme of center tube inserts down in the crossover sub and link up with the apopore of lower floor.
Further, a first water nozzle nipple mounting hole and a second water nozzle nipple mounting hole which are positioned at the radial periphery of the central flow passage are axially formed in the lower end part of the separate injection assembly, the first water nozzle nipple mounting hole is communicated with the central flow passage and the central flow passage, and the second water nozzle nipple mounting hole is communicated with the central flow passage; the first water nozzle nipple is arranged on the first water nozzle nipple mounting hole, the second water nozzle nipple is arranged on the second water nozzle nipple mounting hole, and the lower end of the second water nozzle nipple mounting hole is radially provided with an upper water outlet communicated with the second water nozzle nipple mounting hole.
Further, a first balance pressure hole and a first water inlet which are communicated with the central through flow channel are arranged in the radial direction of the first water nozzle nipple mounting hole, a drainage hole which is communicated with the central through flow hole is axially arranged at the bottom of the first water nozzle nipple mounting hole, the first balance pressure hole is communicated with a balance pressing strip hole of the first water nozzle nipple, and the first water inlet is communicated with a water outlet of the first water nozzle nipple; the radial direction of second water injection well nipple joint mounting hole is provided with second balance pressure hole and the second water inlet that link up with central passageway that overflows, the balance layering hole of second water injection well nipple joint switches on with the second balance pressure hole, the second water inlet switches on with the delivery port of second water injection well nipple joint.
Further, the lower end of the separate injection assembly is also axially provided with a measurement main control nipple located at the radial periphery of the central flow passage, the lower end of the measurement main control nipple is provided with an internal pressure sensor, a first hole pressure sensor and a second hole pressure sensor, the internal pressure sensor is communicated with the central flow passage and used for measuring the internal pressure in the central flow passage, the first hole pressure sensor is communicated with a water outlet of the second water nozzle nipple and used for measuring the water outlet pressure of the second water nozzle nipple, and the second hole pressure sensor is communicated with a water outlet of the first water nozzle nipple and used for measuring the water outlet pressure of the first water nozzle nipple.
Further, a measuring main control nipple mounting hole is axially formed in the lower end portion of the dispensing assembly, the measuring main control nipple is arranged on the measuring main control nipple mounting hole, and the internal pressure sensor, the first pore pressure sensor and the second pore pressure sensor are all located in the measuring main control nipple mounting hole; the lower end part of the dispensing assembly is radially provided with an inner pressure guide hole, an upper pressure guide hole and a lower pressure guide hole which are sequentially arranged at intervals, and the inner pressure sensor is communicated with the inner pressure guide hole and the central flow passage; the first pore pressure sensor is communicated with the upper layer pressure guiding hole and the water outlet of the second water nozzle nipple, and the second pore pressure sensor is communicated with the lower layer pressure guiding hole and the water outlet of the first water nozzle nipple.
Further, measure master control nipple joint including measuring the joint, it sets up in measuring master control nipple joint mounting hole to measure the joint, interior pressure sensor, first hole pressure sensor and second hole pressure sensor all set up on measuring the joint, it is equipped with interior pressure sensor, first hole pressure sensor and second hole pressure sensor spaced sealing washer to measure the cover on the joint, be provided with on the measurement master control nipple joint mounting hole with sealing washer matched sealed face.
Further, the dispensing assembly comprises an outer protective cylinder, wherein an upper joint and a lower joint are respectively arranged at two ends of the outer protective cylinder, and a central overflow channel, a first water nozzle nipple mounting hole, a second water nozzle nipple mounting hole and a measuring main control nipple mounting hole are axially arranged on the lower joint; the central through-flow channel is communicated with the lower joint, a through hole is axially formed in the upper joint, and the through hole is communicated with the outer casing and the central through-flow channel; the lower joint is also provided with a battery pack nipple located at the radial outer periphery of the central flow passage in the axial direction; the lower extreme suit of top connection is in the upper end of first water injection well choke nipple joint, second water injection well choke nipple joint, measurement master control nipple joint and group battery nipple joint.
Further, the lower extreme of top connection is provided with sealed line concentration and connects, the upper end of first water injection well choke nipple, measurement master control nipple, second water injection well choke nipple and group battery nipple all stretches into in the sealed line concentration connects.
Further, a first sealing ring and a second sealing ring are sleeved on the connecting surface of the upper connector and the upper adapter at intervals in the axial direction; the two ends of the packer are respectively connected with an upper adapter and a lower adapter in a sealing way through conical threads, and a third sealing ring is sleeved between the lower end part of the central pipe and the upper end part of the lower water outlet hole.
Further, the drainage hole is axially formed in the lower end of the lower joint; the central overflow hole comprises an overflow hole and a central blind hole communicated with the overflow hole, the overflow hole is positioned at the upper end of the central blind hole, and the overflow hole penetrates through the upper end face of the upper conversion joint and is communicated with the drainage hole.
By adopting the technical scheme, the invention has the following advantages and effects:
(1) According to the one-sealing double-configuration intelligent water injection instrument, the first water nozzle nipple and the second water nozzle nipple are arranged, so that the one-sealing double-configuration intelligent water injection instrument has the functions of measuring layered flow, temperature and pressure, can realize the functions of intelligent separate injection and seal setting of an upper layer and a lower layer, can realize three-layer intelligent separate injection operation by matching with a ground flow automatic controller and an independent secondary packer, simplifies field operation, and improves operation reliability.
(2) The one-sealing double-matching intelligent water injection instrument provided by the invention has the advantages that the first water nozzle nipple and the second water nozzle nipple are parallelly and intensively arranged at the same horizontal position to realize two-layer water injection, the structure is compact, the length of the water injection instrument is far smaller than that of a conventional one-sealing double-matching combined tool section, and the number of serially connected tools is small, the length is short, the on-site construction operation is convenient, the long-term use requirement in the pit is met, and the construction and instrument cost is reduced.
Drawings
Fig. 1 is a schematic diagram of the outline structure of a one-seal double-configuration intelligent water injection instrument.
Fig. 2 is a schematic structural view of the dispensing assembly of the present invention.
Fig. 3 is an enlarged schematic view of the A-A cross-section of fig. 1.
Fig. 4 is a schematic view of the B-B cross-sectional structure of fig. 3.
Fig. 5 is an enlarged view of a part of the cross section of fig. 3 from C-C.
Reference numerals: 101-a dispensing assembly; 102-up-conversion joint; 103-a central tube; 104-a packer; 105-down conversion joint; 201-upper joint; 202-sealing a hub; 203-sealing the line concentration joint; 204-a first nozzle nipple; 205-measuring a master control nipple; 206-a second nozzle nipple; 207-first battery nipple; 208-a second battery nipple; 209-a communication conduit; 210-lower joint; 301-an outer casing; 401-a first balance pressure hole; 402-a second balance pressure hole; 403-first water inlet; 404-a second water inlet; 405-upper layer water outlet holes; 406-overflow aperture; 407-blind central hole; 408-a first sealing ring; 409-central flow channel, 410-central channel; 411-cone threads; 412-a third seal ring; 413-lower bridge aperture; 414-lower water outlet holes; 415-drainage holes; 416-upper bridge aperture; 417-a second seal ring; 501-an internal pressure guide hole; 502—an internal pressure sensor; 503-a first pore pressure sensor; 504-a second pore pressure sensor; 505-measuring a joint; 506-upper seal ring; 507-lower seal ring; 508-upper layer pressure guiding holes; 509-lower pressure guiding holes.
Detailed Description
The following detailed description of the embodiments of the present invention will be provided with reference to the accompanying drawings in order to more clearly understand the objects, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the invention, but rather are merely illustrative of the true spirit of the invention.
As shown in fig. 1-5. The invention provides a one-sealing double-distribution intelligent water injection instrument, which comprises a split injection assembly 101 and a packer 104, wherein the lower end of the split injection assembly 101 is connected with the packer 104 through an upper adapter 102, the lower end of the packer 104 is connected with a lower adapter 105, the lower end part of the split injection assembly 101 is axially provided with a central flow passage 409 penetrating through the upper end and the lower end of the split injection assembly, a first water nozzle nipple 204 and a second water nozzle nipple 206 which are positioned on the radial periphery of the central flow passage 409, and the radial periphery of the lower end part of the split injection assembly 101 is provided with an upper water outlet 405 penetrating through a water outlet of the second water nozzle nipple 206; a central overflow hole penetrating through the water outlet of the first water nozzle nipple 204 and an upper bridge hole 416 penetrating through the central overflow channel 409 are axially arranged in the upper adapter 102 at intervals, and the upper bridge hole 416 is sleeved with the central overflow hole; a lower water outlet hole 414 penetrating through the upper end of the lower adapter 105 is formed in the radial outer periphery of the lower adapter 105, and a lower bridge hole 413 penetrating through the two ends of the lower adapter 105 is axially formed in the lower adapter 105; the central pipe 103 is sleeved in the clearance ring in the central channel 410 of the packer 104, an overflow clearance is formed between the outer peripheral surface of the central pipe 103 and the inner peripheral surface of the central channel 410, the upper end of the central pipe 103 is communicated with the lower end of the central overflow hole, the lower end of the central pipe 103 is inserted into the lower adapter 105 and communicated with the lower water outlet 414, and the two ends of the overflow clearance are respectively communicated with the upper bridge hole 416 and the lower bridge hole 413. The first part of injection liquid in the central through-flow channel 409 is injected into the lower stratum from the lower water outlet 414 after being subjected to flow regulation by the first water nozzle nipple 204, the second part of injection liquid in the central through-flow channel 409 is injected into the upper stratum from the upper water outlet 405 after being subjected to flow regulation by the second water nozzle nipple 206, and the third part of injection liquid in the central through-flow channel 409 flows into the lower tubular column from the lower bridge 413 through the flow gap.
Specifically, the one-seal double-configuration intelligent water injection instrument is composed of a separate injection assembly 101, an upper adapter 102, a central pipe 103, a packer 104 and a lower adapter 105 which are connected up and down. The packer 104 may be a conventional finished packer or a specially tailored electrically driven set or unset packer, and the packer is not limited in variety.
The dispensing assembly 101 is a cylindrical structure with a stepped bore inside, and the diameters of the bores at both ends of the dispensing assembly 101 are smaller than the diameter of the middle bore. The lower end of the dispensing assembly 101 is centrally disposed with a central flow passage 409 forming the lower end bore of the dispensing assembly 101. The lower end of the central through-flow channel 409 penetrates the lower end face of the dispensing assembly 101, and the upper end of the central through-flow channel 409 is communicated with the upper end hole cavity of the dispensing assembly 101 through the middle hole cavity. The upper and lower ends of the first nozzle nipple 204 and the second nozzle nipple 206 are sealed inside the two ends of the dispensing assembly 101. The injection liquid enters the central flow channel 409 through the upper end bore of the dispensing assembly 101 into the middle bore of the dispensing assembly 101.
The up-conversion connector 102 has a stepped cylindrical structure with thin ends and thick middle. The upper end periphery and the lower end periphery of the upper adapter 102 are respectively provided with a threaded surface, and the upper end of the upper adapter 102 is in threaded sealing connection with the lower end of the dispensing assembly 101. The lower end of the upper adapter 102 is threaded and sealingly connected to the upper end of the packer 104. The two ends of the central channel 410 penetrate through the upper end face and the lower end face of the packer 104, the central tube 103 is sleeved in the central channel 410, and an annular overflow gap is formed between the outer peripheral surface of the central tube 103 and the inner peripheral surface of the central channel 410.
The axial center of the upper adapter 102 is provided with a central overflow hole, the lower end of the central overflow hole axially penetrates through the lower end face of the upper adapter 102, and the upper end of the central overflow hole radially penetrates through the outer edge of the upper end face of the upper adapter 102. The upper bridge hole 416 is eccentrically disposed in the axial direction of the upper adapter 102, the upper bridge hole 416 is annularly disposed at the outer peripheral side of the central flow-through hole, and the upper bridge hole 416 penetrates the upper and lower end surfaces of the upper adapter 102 up and down.
The packer 104 is of a stepped cylindrical structure with thin ends and thick middle, a threaded cavity hole is formed in the upper end of the packer 104, and external threads are formed in the periphery of the lower end of the packer 104 and connected with the lower adapter 105. The central passage 410 penetrates through the threaded cavity and the lower end face of the packer 104, the inner diameter of the central passage 410 is smaller than the inner diameter of the threaded cavity, the bottom of the threaded cavity at the upper end of the packer 104 and the lower end face of the upper adapter 102 are spaced to form a first spacing space, and the lower end of the upper bridge hole 416 penetrates through the first spacing space and the upper end of the overflow gap.
The lower adapter 105 is of a stepped cylindrical structure with a thick upper end and a thin lower end, an upper cavity hole and a lower cavity hole which are vertically spaced are respectively arranged in the center of the upper end and the lower end of the lower adapter 105, the inner circumferential surface of the upper cavity hole is provided with internal threads and is connected with the outer threads of the lower end of the packer, and the outer circumferential surface of the lower cavity hole is provided with external threads to realize threaded connection with the lower pipe column. The radial periphery of lower adapter 105 sets up lower floor's apopore 414, and lower floor's apopore 414 is L type structure, and lower floor's apopore 414 both ends link up lower adapter 105 outer peripheral face and last cavity hole respectively, and the lower extreme sealing connection of packer 104 is in the last cavity downthehole of lower adapter 105, and the lower terminal surface of packer 104 and the bottom interval in last cavity hole form the second interval space.
The upper end of the central tube 103 is inserted into the central overflow hole of the upper adapter 102 after passing through the first interval space, and the lower end of the central tube 103 extends from the central channel 410 into the upper cavity hole of the lower adapter 105 and is communicated with the upper end of the lower water outlet hole 414.
The lower bridge hole 413 is axially and eccentrically arranged in the lower adapter 105, the axial section of the lower bridge hole 413 is of an L-shaped structure, an axial ring sleeve of the lower bridge hole 413 is arranged on one side of a lower water outlet hole 414 of the lower adapter 105, the lower bridge hole 413 is spaced from the lower water outlet hole 414, the upper end of the lower bridge hole 413 axially penetrates through the bottom of an upper cavity hole of the lower adapter 105 and is communicated with a second spacing space, the lower end of the lower bridge hole 413 radially penetrates through a lower cavity hole of the lower adapter 105, so that a part of injection liquid flows into a lower pipe column after entering the lower cavity hole from the lower bridge hole 413, and the lower end of an overflow gap penetrates through the second spacing space and is communicated with the upper end of the lower bridge hole 413.
Further, a first water nozzle nipple mounting hole and a second water nozzle nipple mounting hole are axially formed in the lower end portion of the dispensing assembly 101 and located at the radial periphery of the central flow passage 409, the first water nozzle nipple mounting hole is communicated with the central flow passage 409 and the central flow passage, and the second water nozzle nipple mounting hole is communicated with the central flow passage 409; the first water nozzle nipple installing hole is provided with a first water nozzle nipple 204, the second water nozzle nipple installing hole is provided with a second water nozzle nipple 206, and the lower end of the second water nozzle nipple installing hole is radially provided with an upper water outlet 405 communicated with the second water nozzle nipple installing hole.
Specifically speaking, first water injection nipple joint mounting hole and second water injection nipple joint mounting hole axial interval set up the lower part of the branch injection subassembly 101 of center through-flow channel 409 periphery, and first water injection nipple joint 204 threaded connection is on first water injection nipple joint mounting hole, and in the lower extreme of first water injection nipple joint 204 stretched into first water injection nipple joint mounting hole, the upper end of first water injection nipple joint 204 extended central through-flow channel 409. The second water nozzle nipple 206 is in threaded connection with the second water nozzle nipple mounting hole, the lower end of the second water nozzle nipple 206 extends into the second water nozzle nipple mounting hole, the upper end of the second water nozzle nipple 206 extends out of the central through-flow channel 409, one end of the upper water outlet 405 penetrates through the second water nozzle nipple mounting hole and then is communicated with the water outlet of the second water nozzle nipple 206, and the other end of the upper water outlet 405 radially penetrates through the outer wall of the dispensing component 101.
Further, a first balance pressure hole 401 and a first water inlet 403 which are communicated with a central through-flow channel 409 are radially arranged in the first water nozzle nipple mounting hole, a drainage hole 415 which is communicated with the central through-flow hole is axially arranged at the bottom of the first water nozzle nipple mounting hole, the first balance pressure hole 401 is communicated with a balance pressure bar hole of the first water nozzle nipple 204, and the first water inlet 403 is communicated with a water inlet of the first water nozzle nipple 204; the radial direction of second water injection nipple joint mounting hole is provided with second balance pressure hole 402 and the second water inlet 404 that link up with central through-flow channel 409, second balance pressure hole 402 and the balanced layering hole of second water injection nipple joint 206 switch on, second water inlet 404 and the water inlet of second water injection nipple joint 206 switch on.
Specifically, the first balance pressure hole 401 and the first water inlet 403 are vertically arranged at intervals and are all located at the upper part of the first water nozzle nipple installation hole, and the injection liquid in the central through-flow channel 409 is drained into the first water nozzle nipple 204 through the first water inlet 403. The first balance pressure hole 401 is radially opposite to the balance pressure strip-shaped hole on the first water nozzle nipple 204, the first water inlet 403 is radially opposite to the water inlet of the first water nozzle nipple 204, and internal pressure in the central through-flow channel 409 can be introduced into the first water nozzle nipple 204 through the first balance pressure hole 401, so that pressures at the upper end and the lower end of a valve core moving by the first water nozzle nipple 204 are in a balance pressure state, and thus differential pressure force cannot be generated to influence the action of the first water nozzle nipple 204. The second balance pressure hole 402 and the second water inlet 404 are arranged at an upper and lower interval and are both positioned at the upper part of the second water nozzle nipple installation hole, and the injection liquid in the central through-flow channel 409 is drained into the second water nozzle nipple 206 through the second water inlet 404. The second balance pressure hole 402 is radially opposite to the balance pressure strip-shaped hole on the second water nozzle nipple 206, the second water inlet 404 is radially opposite to the water inlet of the second water nozzle nipple 206, and internal pressure in the central through-flow channel 409 can be introduced into the second water nozzle nipple 206 through the second balance pressure hole 402, so that pressures at the upper end and the lower end of a valve core moving by the second water nozzle nipple 206 are in a balance pressure state, and therefore differential pressure force cannot be generated, and the action of the second water nozzle nipple 206 is influenced.
Further, the lower end portion of the dispensing assembly 101 is further axially provided with a measurement master control nipple 205 located at the radial periphery of the central through-flow channel 409, the lower end portion of the measurement master control nipple 205 is provided with an internal pressure sensor 502, a first hole pressure sensor 503 and a second hole pressure sensor 504, the internal pressure sensor 502 is communicated with the central through-flow channel 409 and is used for measuring the internal pressure in the central through-flow channel 409, the first hole pressure sensor 503 is communicated with the water outlet of the second nozzle nipple 206 and is used for measuring the water outlet pressure of the second nozzle nipple 206, and the second hole pressure sensor 504 is communicated with the water outlet of the first nozzle nipple 204 and is used for measuring the water outlet pressure of the first nozzle nipple 204.
Specifically, the measuring master control nipple 205 is axially parallel to the first water nozzle nipple 204 and the second water nozzle nipple 206 at intervals, the upper end of the measuring master control nipple 205 extends out of the central through-flow channel 409, the lower end of the measuring master control nipple 205 extends into the lower end of the dispensing component 101, and the upper end and the lower end of the measuring master control nipple 205 are sealed in the dispensing component 101.
Further, a measuring main control nipple mounting hole is axially formed in the lower end portion of the dispensing assembly 101, the measuring main control nipple 205 is arranged on the measuring main control nipple mounting hole, and the internal pressure sensor 502, the first hole pressure sensor 503 and the second hole pressure sensor 504 are all located in the measuring main control nipple mounting hole; the lower end part of the dispensing assembly 101 is radially provided with an inner pressure guide hole 501, an upper pressure guide hole 508 and a lower pressure guide hole 509 which are sequentially arranged at intervals up and down, and the inner pressure sensor 502 is communicated with the inner pressure guide hole 501 and the central through-flow channel 409; the first pore pressure sensor 503 is communicated with the upper layer pressure guide hole 508 and the water outlet of the second water nozzle nipple 206; the second pore pressure sensor 504 is communicated with the lower pressure guiding hole 509 and the water outlet of the first nozzle nipple 204.
Specifically, the lower end of the dispensing component 101 is axially provided with a measuring main control nipple mounting hole, the measuring main control nipple mounting hole is located at the periphery of the central through-flow channel 409, the measuring main control nipple 205 is in threaded connection with the upper end of the measuring main control nipple mounting hole, the lower end of the measuring main control nipple 205 stretches into the measuring main control nipple mounting hole, the dispensing component 101 at the periphery of the central through-flow channel 409 is radially provided with an internal pressure guide hole 501, an upper pressure guide hole 508 and a lower pressure guide hole 509 at intervals in sequence, wherein two ends of the internal pressure guide hole 501 are communicated with the central through-flow channel 409 after penetrating through the main control nipple mounting hole and the central through-flow channel 409, two ends of the upper pressure guide hole 508 are communicated with the water outlet of the second water nozzle nipple 206 after penetrating through the measuring main control nipple mounting hole and the second water nozzle nipple mounting hole, and two ends of the lower pressure guide hole 509 are communicated with the water outlet of the first water nozzle nipple 204 after penetrating through the main control nipple mounting hole and the first water nozzle nipple mounting hole. The front end of the internal pressure sensor 502 on the measuring joint 505 is communicated with the internal pressure guiding hole 501, the front end of the first hole pressure sensor 503 is communicated with the upper layer pressure guiding hole 508, and the front end of the second hole pressure sensor 504 is communicated with the lower layer pressure guiding hole 509.
According to the pressure difference between the pressure value detected by the internal pressure sensor 502 and the pressure value detected by the first hole pressure sensor 503, the injection flow rate of the injection liquid of the upper water outlet 405 can be calculated by using the principle of a differential pressure flowmeter in combination with the water nozzle opening of the second water nozzle nipple 206. According to the pressure difference between the pressure value detected by the internal pressure sensor 502 and the pressure value detected by the second hole pressure sensor 504, the injection flow rate of the injection liquid of the lower water outlet hole 414 can be calculated by utilizing the principle of a differential pressure flowmeter by combining the water nozzle opening degree of the first water nozzle nipple 204.
Further, the measurement master control nipple 205 comprises a measurement joint 505, the measurement joint 505 is arranged in a measurement master control nipple mounting hole, the internal pressure sensor 502, the first pore pressure sensor 503 and the second pore pressure sensor 504 are all arranged on the measurement joint 505, a sealing ring for spacing the internal pressure sensor 502, the first pore pressure sensor 503 and the second pore pressure sensor 504 is sleeved on the measurement joint 505, and a sealing surface matched with the sealing ring is arranged on the measurement master control nipple mounting hole.
Specifically, the measuring joint 505 is located at the lower end of the measuring master nipple 205 and extends into the measuring master nipple mounting hole, and the internal pressure sensor 502, the first pore pressure sensor 503 and the second pore pressure sensor 504 are disposed on the measuring joint 505 at intervals up and down. The sealing ring comprises an upper sealing ring 506 and a lower sealing ring 507, wherein the upper sealing ring 506 is positioned between the first pore pressure sensor 503 and the inner pressure sensor 502 in the mounting hole of the measuring main control nipple, and the lower sealing ring 507 is positioned between the second pore pressure sensor 504 and the first pore pressure sensor 503 in the mounting hole of the measuring main control nipple. The sealing ring and the sealing surface are matched and sealed for isolating the measuring pressure of different sensors, so that the accuracy of pressure measurement is ensured.
Further, a control circuit board is arranged inside the upper end of the measurement master control nipple 205, and a control circuit and a temperature sensor are arranged on the control circuit board. The temperature sensor is welded on the control circuit board and used for measuring the internal temperature of the water injection instrument. The control circuit comprises a singlechip, an embedded program is operated on the singlechip, and the singlechip can read temperature and pressure data according to the program and receive a control command of a ground controller to control the opening degree of the water nozzle of the first water nozzle nipple 204 and the second water nozzle nipple 206, so that the action of the whole water injection instrument is realized. The control circuit is electrically connected with the temperature sensor, the internal pressure sensor 502, the first pore pressure sensor 503 and the second pore pressure sensor 504 simultaneously, and transmits pressure value data and water nozzle opening data to an uphole ground controller in a wave code wireless communication mode, so that the measurement master control nipple 205 and the ground controller can exchange data and send and receive commands.
Further, the dispensing assembly comprises an outer casing 301, two ends of the outer casing 301 are respectively provided with an upper joint 201 and a lower joint 210, and a central through-flow channel 409, a first water nozzle nipple mounting hole, a second water nozzle nipple mounting hole and a measuring main control nipple mounting hole are axially arranged on the lower joint 210; the central through-flow channel 409 penetrates through the lower joint 210, and a through hole is axially arranged in the upper joint 201, and the through hole communicates the outer casing 301 with the central through-flow channel 409; the lower joint 210 is also provided in its axial direction with a battery pack nipple and a communication penetration pipe 209 located at the radial outer periphery of the central flow passage 409; the lower end of the upper connector 201 is sleeved at the upper ends of the first water nozzle nipple 204, the second water nozzle nipple 206, the measurement master control nipple 205, the battery pack nipple and the communication threading pipe 209.
Specifically, the uppermost end of the dispensing assembly 101 is an upper joint 201, the lower end is a lower joint 210, the middle part is an outer casing 301, a through hole is formed in the center axial direction of the upper joint 201, the lower joint 210 and the outer casing 301 are all in threaded connection, and an O-shaped rubber ring is simultaneously adopted to seal between the outer casing 301 and the upper joint 201 and the lower joint 210.
The central flow passage 409 is axially provided at the center of the lower joint 210, and the central flow passage 409 penetrates the upper and lower end surfaces of the lower joint 210. The first water nozzle nipple installation hole, the second water nozzle nipple installation hole and the measuring main control nipple installation hole axially and eccentrically encircle the lower joint 210 at the periphery of the central through-flow channel 409 in the radial direction, the first water nozzle nipple installation hole and the second water nozzle nipple installation hole are positioned at the two radial sides of the measuring main control nipple installation hole, the battery pack nipple is opposite to the first water nozzle nipple 204, the second water nozzle nipple 206 and the measuring main control nipple 205, and the communication threading tube 209 is axially arranged in the lower joint 210 between the battery pack nipple and the measuring main control nipple 205. The battery pack nipple includes a first battery nipple 207 and a second battery nipple 208, the first battery nipple 207 and the second battery nipple 208 being axially spaced apart and radially opposite the first nozzle nipple 204 and the second nozzle nipple 206, respectively. The first water nozzle nipple 204, the measurement master control nipple 205, the second water nozzle nipple 206, the first battery nipple 207, the second battery nipple 208 and the communication threading pipe 209 are all sleeved in the outer casing 301, the lower ends of the first water nozzle nipple 204, the measurement master control nipple 205, the second battery nipple 207, the second battery nipple 208 and the communication threading pipe 209 are all installed on the lower joint 210 in a threaded installation mode, and the upper ends of the first water nozzle nipple, the second battery nipple and the communication threading pipe are all extended into the upper joint 201.
Because the through hole in the center of the upper joint 201 is communicated with the central through-flow channel 409 after penetrating through the outer casing 301, injection liquid enters the central through-flow channel 409 from the upper joint 201 through the outer casing 301, and the first water nozzle nipple 204, the measuring main control nipple 205, the second water nozzle nipple 206, the first battery nipple 207, the second battery nipple 208 and the communication threading pipe 209 are all hermetically soaked in the injection liquid in the outer casing 301.
The first battery nipple 207, the second battery nipple 208 are all used for the power supply of whole water injection appearance, and communication threading pipe 209 is used for the inside cable of crossing of water injection appearance. The upper adapter 102 is simultaneously provided with a communication socket, the lower end of the communication threading pipe 209 is communicated with the upper adapter 102 after penetrating through the lower adapter 210, and the communication threading pipe 209 is used for uniformly wiring the lead wires of the communication socket entering the upper adapter 201 from the upper adapter 102. The first battery nipple 207 and the second battery nipple 208 are electrically connected with the first water nozzle nipple 204, the second water nozzle nipple 206 and the measurement master control nipple 205.
Further, the lower end of the upper connector 201 is provided with a sealed line concentration connector 203, and the upper ends of the first water nozzle nipple 204, the measurement master control nipple 205, the second water nozzle nipple 206, the battery pack nipple and the communication line threading pipe 209 all extend into the sealed line concentration connector 203.
Specifically, the lower end of the sealing line concentration joint 203 is simultaneously provided with a sealing line concentration sleeve 202, and the sealing line concentration sleeve 202 and the sealing line concentration joint 203 are used for concentrating all the leads of the first water nozzle nipple 204, the second water nozzle nipple 206, the measurement master control nipple 205, the first battery nipple 207, the second battery nipple 208 and the communication threading pipe 209 in the annular sealing space of the sealing line concentration joint 203 and the sealing line concentration sleeve 202 for butt connection.
Further, a first sealing ring 408 and a second sealing ring 417 are sleeved on the connecting surface of the upper connector 201 and the upper adapter 102 at intervals in the axial direction; two ends of the packer 104 are respectively in sealing connection with the upper adapter 102 and the lower adapter 105 through conical threads 411; a third sealing ring 412 is sleeved between the lower end of the central pipe 103 and the upper end of the lower water outlet hole 414.
Specifically, the first seal ring 408 and the second seal ring 417 are disposed at an upper-lower interval so as to separate the injection liquid in the center flow passage 409 from the injection liquid in the drain hole 415. The upper end box of packer 104 is connected in the lower extreme periphery of upper adapter 102, and upper end box and the lower extreme periphery of upper adapter 102 adopt taper screw 411 sealing connection, and the lower extreme pin of packer 104 is connected in the upper chamber hole of lower adapter 105, and the upper chamber hole of lower adapter 105 also adopts taper screw 411 sealing connection. The lower end of the central tube 103 is inserted into a lower water outlet hole 414 at the bottom of the upper cavity hole of the lower adapter 105, a third sealing ring 412 is sleeved between the outer periphery of the lower end of the central tube 103 and the inner periphery of the upper end of the lower water outlet hole 414, the bottom of the second interval space is sealed by the third sealing ring 412, and the central tube 103 in the lower adapter 105 and two independent channels formed by the overflow gap are sealed and isolated by the third sealing ring 412.
Further, a drainage hole 415 is axially disposed at the lower end of the lower joint 210; the central overflow hole comprises an overflow hole 406 and a central blind hole 407 communicated with the overflow hole, the overflow hole 406 is positioned at the upper end of the central blind hole 407, and the overflow hole 406 penetrates through the upper end face of the upper conversion joint 102 and is communicated with the drainage hole 415.
Specifically, the drainage hole 415 is eccentrically arranged at the lower end of the lower joint 210 and penetrates through the bottom of the first nozzle nipple mounting hole. The central blind hole 407 is a vertical hole, the central blind hole 407 is arranged at the axial center of the upper adapter 102, the upper end of the central blind hole 407 is closed, and the lower end of the central blind hole 407 penetrates through the lower end face of the upper adapter 102. The upper end of the upper adapter 102 is radially provided with an overflow hole 406, the overflow hole 406 is of an L-shaped structure, one end of the overflow hole 406 is transversely communicated with a central blind hole 407, and the other end of the overflow hole 406 extends out of the upper adapter 102 radially and penetrates through the upper end face of the upper adapter 102. When the upper adapter 102, the lower adapter 210 and the packer 104 are connected up and down, the upper end of the central pipe 103 is inserted into the lower end of the central blind hole 407 to be communicated with the lower end of the central blind hole 407, and the upper end of the central blind hole 407 is communicated with the drainage hole 415 after being communicated with the overflow hole 406, so that injection liquid is drained from the eccentric drainage hole 415 at the lower end of the lower adapter 210 into the central pipe 103 to enter the lower adapter 105.
The invention provides a one-seal double-configuration intelligent water injection instrument, which comprises the following operation steps:
step 1, a double-matched intelligent water injection instrument is subjected to parameter setting, the water injection instrument is connected with a pipe column and then is put into a well after the first water nozzle nipple 204 and the second water nozzle nipple 206 are closed, and the water injection instrument adopts wave code wireless communication, so that the construction operation under pressure can be realized.
Step 2, pressurizing the interior of the tubular string, waiting until a preset time is in place or issuing a pressure wave command to set the packer 104.
And 3, issuing a seal inspection command by adopting a ground controller, respectively keeping the first water nozzle nipple 204 and the second water nozzle nipple 206 in a closed state, then measuring the pressure value of the first pore pressure sensor 503 and the pressure value of the second pore pressure sensor 504, and uploading the seal inspection state by adopting a wave code wireless communication mode if the pressure difference exists between the two pressure values to indicate that the packer 104 is successfully sealed.
Step 4, a ground controller is adopted to issue a wave code command, and the first water nozzle nipple 204 and the second water nozzle nipple 206 are respectively controlled to conduct automatic flow measurement and adjustment; wherein, a part of injection liquid flows into the second water nozzle nipple 206 through the second water inlet 404 after flowing through the central passage 409, is injected into the upper stratum from the upper water outlet 405 after flowing through the second water nozzle nipple 206, and a part of injection liquid flows into the first water nozzle nipple 204 through the first water inlet 403 after flowing through the central passage 409, flows out from the drainage hole 415 after flowing through the first water nozzle nipple 204 after flowing through the central flow hole and the central pipe 103, and is injected into the lower stratum from the lower water outlet 414 after flowing through the central flow hole and the central pipe 103.
And 5, measuring the internal pressure value in the central through-flow channel 409 by adopting an internal pressure sensor 502, measuring the water outlet pressure value regulated by the second water nozzle nipple 206 by adopting a first pore pressure sensor 503, measuring the water outlet pressure value regulated by the first water nozzle nipple 204 by adopting a second pore pressure sensor 504, and respectively calculating the layering flow of the upper stratum and the lower stratum according to the pressure difference value of each water outlet pressure value and the internal pressure value and the water nozzle opening data of each water nozzle nipple.
And 6, when the underground flow, pressure and temperature data are needed, the ground controller issues a data acquisition command, the water nozzle of the underground water injection instrument acts to generate pressure and flow waves, and the needed data are uploaded.
Claims (10)
1. An intelligent water injection appearance is joined in marriage to a pair, its characterized in that: the device comprises a dispensing component (101) and a packer (104), wherein the lower end of the dispensing component (101) is connected with the packer (104) through an upper adapter (102), the lower end of the packer (104) is connected with a lower adapter (105), a central flow passage (409) penetrating through the upper end and the lower end of the dispensing component (101) and a first water nozzle nipple (204) and a second water nozzle nipple (206) which are positioned on the radial periphery of the central flow passage (409) are axially arranged at the lower end of the dispensing component (101), and an upper water outlet hole (405) penetrating through a water outlet of the second water nozzle nipple (206) is arranged on the radial periphery of the lower end of the dispensing component (101); a central overflow hole communicated with a water outlet of the first water nozzle nipple (204) and an upper bridge hole (416) communicated with the central overflow channel (409) are axially arranged in the upper adapter (102) at intervals, and the upper bridge hole (416) is sleeved with the central overflow hole; a central pipe (103) is sleeved in a gap ring in a central channel (410) of the packer (104), an overflow gap is formed between the outer peripheral surface of the central pipe (103) and the inner peripheral surface of the central channel (410), and the upper end of the central pipe (103) is communicated with the lower end of a central overflow hole; the radial periphery of lower crossover sub (105) is provided with lower floor's apopore (414) of lining up its upper end, the axial of lower crossover sub (105) is provided with bridge type hole (413) down of lining up its both ends down, bridge type hole (416) and bridge type hole (413) down are gone up in the both ends intercommunication respectively in overflow clearance, the lower extreme of center tube (103) inserts in lower crossover sub (105) and link up with lower floor's apopore (414).
2. The one-seal double-configuration intelligent water injection instrument according to claim 1, wherein: the lower end part of the dispensing assembly (101) is axially provided with a first water nozzle nipple installation hole and a second water nozzle nipple installation hole which are positioned at the radial periphery of the central flow passage (409), the first water nozzle nipple installation hole is communicated with the central flow passage (409) and the central flow passage, and the second water nozzle nipple installation hole is communicated with the central flow passage (409); the first water nozzle nipple mounting hole is provided with a first water nozzle nipple (204), the second water nozzle nipple mounting hole is provided with a second water nozzle nipple (206), and the lower end of the second water nozzle nipple mounting hole is radially provided with an upper water outlet hole (405) communicated with the second water nozzle nipple mounting hole.
3. The one-seal double-configuration intelligent water injection instrument according to claim 2, wherein: the radial direction of the first water nozzle nipple installation hole is provided with a first balance pressure hole (401) and a first water inlet (403) which are communicated with a central through-flow channel (409), the bottom of the first water nozzle nipple installation hole is axially provided with a drainage hole (415) communicated with the central through-flow hole, the first balance pressure hole (401) is communicated with the balance pressure bar hole of the first water nozzle nipple (204), and the first water inlet (403) is communicated with the water outlet of the first water nozzle nipple (204); the radial direction of second water injection well nipple joint mounting hole is provided with second balance pressure hole (402) and second water inlet (404) that link up with central through-flow channel (409), second balance pressure hole (402) are switched on with the balance layering hole of second water injection well nipple joint (206), second water inlet (404) are switched on with the delivery port of second water injection well nipple joint (206).
4. A one-seal double-fitting intelligent water injector according to claim 3, characterized in that: the lower end of the dispensing assembly (101) is also axially provided with a measurement main control nipple (205) positioned at the radial periphery of a central through-flow channel (409), the lower end of the measurement main control nipple (205) is provided with an internal pressure sensor (502), a first hole pressure sensor (503) and a second hole pressure sensor (504), the internal pressure sensor (502) is communicated with the central through-flow channel (409) and is used for measuring the internal pressure in the central through-flow channel (409), the first hole pressure sensor (503) is communicated with the water outlet of the second water nozzle nipple (206) and is used for measuring the water outlet pressure of the second water nozzle nipple (206), and the second hole pressure sensor (504) is communicated with the water outlet of the first water nozzle nipple (204) and is used for measuring the water outlet pressure of the first water nozzle nipple (204).
5. The one-seal double-configuration intelligent water injection instrument according to claim 4, wherein: the lower end part of the dispensing assembly (101) is also axially provided with a measuring main control nipple mounting hole, the measuring main control nipple (205) is arranged on the measuring main control nipple mounting hole, and the internal pressure sensor (502), the first pore pressure sensor (503) and the second pore pressure sensor (504) are all positioned in the measuring main control nipple mounting hole; an inner pressure guide hole (501), an upper pressure guide hole (508) and a lower pressure guide hole (509) which are sequentially arranged at the lower end part of the dispensing assembly (101) in the radial direction, wherein the inner pressure sensor (502) is communicated with the inner pressure guide hole (501) and the central through-flow channel (409); the first hole pressure sensor (503) is communicated with the upper layer pressure guiding hole (508) and the water outlet of the second water nozzle nipple (206), and the second hole pressure sensor (504) is communicated with the lower layer pressure guiding hole (509) and the water outlet of the first water nozzle nipple (204).
6. The one-seal double-configuration intelligent water injection instrument according to claim 5, wherein: measurement master control nipple joint (205) is including measuring joint (505), measurement joint (505) sets up in measuring master control nipple joint mounting hole, interior pressure sensor (502), first hole pressure sensor (503) and second hole pressure sensor (504) all set up on measuring joint (505), the cover is equipped with interior pressure sensor (502), first hole pressure sensor (503) and second hole pressure sensor (504) spaced sealing washer on measuring joint (505), be provided with on the measurement master control nipple joint mounting hole with sealing washer matched sealed face.
7. The one-seal double-configuration intelligent water injection instrument according to claim 6, wherein: the dispensing assembly (101) comprises an outer casing (301), wherein an upper joint (201) and a lower joint (210) are respectively arranged at two ends of the outer casing (301), and a central through-flow channel (409), a first water nozzle nipple mounting hole, a second water nozzle nipple mounting hole and a measuring main control nipple mounting hole are axially arranged at the lower joint (210); the central through-flow channel (409) penetrates through the lower joint (210), a through hole is formed in the axial direction of the upper joint (201), and the through hole is communicated with the outer casing (301) and penetrates through the central through-flow channel (409); the lower joint (210) is also provided with a battery pack nipple located at the radial outer periphery of the central flow passage (409) in the axial direction; the lower end of the upper joint (201) is sleeved at the upper ends of the first water nozzle nipple (204), the second water nozzle nipple (206), the measurement master control nipple (205) and the battery pack nipple.
8. The one-seal double-configuration intelligent water injection instrument according to claim 7, wherein: the lower extreme of top connection (201) is provided with sealed line concentration joint (203), the upper end of first water injection well choke nipple (204), measurement master control nipple (205), second water injection well choke nipple (206) and group of battery nipple all stretches into in sealed line concentration joint (203).
9. The one-seal double-configuration intelligent water injection instrument according to claim 8, wherein: a first sealing ring (408) and a second sealing ring (417) are sleeved on the connecting surface of the upper connector (201) and the upper adapter (102) at intervals in the axial direction; the two ends of the packer (104) are respectively connected with the upper adapter (102) and the lower adapter (105) in a sealing way through conical threads (411), and a third sealing ring (412) is sleeved between the lower end part of the central pipe (103) and the upper end part of the lower water outlet hole (414).
10. The one-seal double-configuration intelligent water injection instrument according to claim 9, wherein: the lower end of the lower joint (210) is axially provided with the drainage hole (415); the central overflow hole comprises an overflow hole (406) and a central blind hole (407) communicated with the overflow hole, the overflow hole (406) is positioned at the upper end of the central blind hole (407), and the overflow hole (406) penetrates through the upper end face of the upper conversion joint (102) and is communicated with the drainage hole (415).
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117888868A (en) * | 2024-03-18 | 2024-04-16 | 西安洛科电子科技股份有限公司 | Underground integrated rechargeable high-speed wave code water distribution device |
| CN117888868B (en) * | 2024-03-18 | 2024-05-28 | 西安洛科电子科技股份有限公司 | Underground integrated rechargeable high-speed wave code water distribution device |
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