CN110206517B

CN110206517B - Water distributor

Info

Publication number: CN110206517B
Application number: CN201910565851.3A
Authority: CN
Inventors: 林茜; 吴若澄; 侯龙; 辛雪凝
Original assignee: SHANDONG DADONGLIAN PETROLEUM EQUIPMENT CO Ltd
Current assignee: SHANDONG DADONGLIAN PETROLEUM EQUIPMENT CO Ltd
Priority date: 2019-06-26
Filing date: 2019-06-26
Publication date: 2021-09-28
Anticipated expiration: 2039-06-26
Also published as: CN110206517A

Abstract

The application discloses water injection mandrel, it includes shell, first joint, second joint, mainstream through-flow pipeline, rotary valve mechanism and actuating mechanism. The limbers has been seted up to the perisporium of mainstream logical pipeline, the one end of mainstream logical pipeline connect in the first joint and with first mainstream passageway intercommunication, the other end of mainstream logical pipeline connect in the second joint and with second mainstream passageway intercommunication, the shell sets up between first joint and second joint, shell, first joint and second joint inject sealed cavity jointly, the mainstream logical pipeline is arranged in sealed cavity, sealed cavity and water injection channel intercommunication. A rotary valve mechanism is located in the fill channel. The driving mechanism is connected with the rotary valve mechanism and is used for driving the rotary valve mechanism to conduct or cut off the water injection channel. The technical scheme of this application can effectively solve the not long problem of service life of the executive component among the water injection mandrel among the prior art.

Description

Water distributor

Technical Field

The application relates to the technical field of oilfield water injection, in particular to a water distributor.

Background

The oilfield separate layer water injection means that: in the process of oil and gas field development, a packer is put into an oil and gas well to separate oil layers with different properties (such as permeability), and then a water distributor is put into each layer to distribute water in layers in the oil field so as to supplement and maintain the pressure of the oil layer and improve the yield of the oil and gas field. The oilfield zonal injection is the most effective method for improving the contradiction between different oil layers and increasing the oilfield recovery efficiency.

In the prior art, the service life of an actuating element in a water distributor is not long.

Disclosure of Invention

The application provides a water distributor which can effectively solve the problem that the service life of an actuating element in the water distributor in the prior art is not long.

The application provides a water distributor, it includes shell, first joint, second joint, mainstream through-flow pipeline, rotary valve mechanism and actuating mechanism. The first fitting has a first primary flow passage. The second joint has a water filling channel and a second main flow channel which are independent from each other. The limbers has been seted up to the perisporium of mainstream logical pipeline, the one end of mainstream logical pipeline connect in the first joint and with first mainstream passageway intercommunication, the other end of mainstream logical pipeline connect in the second joint and with second mainstream passageway intercommunication, the shell sets up between first joint and second joint, shell, first joint and second joint inject sealed cavity jointly, the mainstream logical pipeline is arranged in sealed cavity, sealed cavity and water injection channel intercommunication. A rotary valve mechanism is located in the fill channel. The driving mechanism is connected with the rotary valve mechanism and is used for driving the rotary valve mechanism to conduct or cut off the water injection channel.

In the above solution, a water distributor is provided, which is capable of effectively protecting the drive mechanism for driving the rotary valve mechanism during water injection (stratified water distribution) use, which enables the drive mechanism (actuator) to be in a safe, non-corrosive gas environment. Wherein, first joint and second connect respectively for top connection and lower clutch in this area, first joint, mainstream lead to pipe and second connect in proper order for the first mainstream passageway of first joint, mainstream through pipeline and the second mainstream passageway of second joint communicate in proper order, water injection liquid leads to through the leading-in flowing through mainstream through pipeline of the first mainstream passageway of first joint, second mainstream passageway can the layering water distribution (a plurality of water distributors can splice the use, in order to realize the stratum work of different depths) in order to realize carrying out to the stratum of different depths. Wherein the water injection channel in the second joint is used for water injection (distribution) to maintain formation pressure. In order to ensure that the driving mechanism for controlling the water injection opening degree is in an environment without corrosive gas in work, the peripheries of the first joint, the second joint and the main flow pipeline are also provided with shells, the first joint and the second joint jointly limit a sealed cavity, and a water injection channel of the second joint is communicated with the sealed cavity. The main flow pipeline is positioned in the sealed cavity, the peripheral wall of the main flow channel is provided with a water through hole, the water injection liquid introduced from the first main flow channel flows into the sealed cavity from the water through hole in the main flow pipeline, the water injection liquid flows to the water injection channel of the second joint, before flowing to the water filling channel, the water filling liquid firstly fills the cavity where the driving mechanism is located, so that the driving mechanism is full of the water filling liquid at the position of transmission connection with the rotary valve mechanism, so that the parts of the drive mechanism exposed to the outside and connected to the rotary valve mechanism are in an environment sealed by the filling liquid, the possibility of contact with gas is avoided, the transmission part of the driving mechanism is effectively ensured not to be influenced by gas corrosion, and finally, the water injection liquid can flow out from the outlet of the water injection channel under the condition that the driving mechanism drives the rotary valve mechanism to complete the water injection work.

In one possible implementation, the water distributor further comprises a locking ring;

one end of the shell is connected with one end of the second joint in a threaded mode, and the other end of the shell is sealed on the wall face of the first joint through a locking ring.

In the above scheme, an assembly method that the shell, the first joint and the second joint can possibly realize is provided, wherein one end of the shell is in threaded connection with the second joint, and the other end of the shell is in sealed connection with the first joint through the locking ring, so that a sealed cavity with a good sealing effect is formed between the inner cavity of the shell and the end faces of the first joint and the second joint.

Optionally, in a possible implementation manner, a water inlet groove is formed in the end surface of the second joint, and a water guide channel communicated with the water injection channel extends from the bottom end of the water inlet groove;

the rotary valve mechanism comprises a rotary valve and a water nozzle, the water nozzle is fixed in the water injection channel, the water nozzle is provided with a water inlet and a water outlet which are mutually communicated, the water outlet is communicated with the outlet of the water injection channel, the water inlet is communicated with the water guide channel, and the water injection channel is communicated with the sealed cavity through the water nozzle and the water guide channel;

one end of the rotary valve is in transmission connection with the driving mechanism, and the other end face of the rotary valve is provided with a sealing lug which is configured to close or open the water inlet under the driving of the driving mechanism.

In the above scheme, a concrete structure of possible realization of the communication of the water injection channel and the sealed cavity and a concrete structure of possible realization of the rotary valve mechanism are provided, wherein after the water injection liquid flows out from the limber hole of the main flow pipeline, the gap between the driving mechanism and the rotary valve mechanism is filled, and the water injection liquid flows into the water injection channel from the water inlet tank and the water guide channel. Wherein, the rotary valve mechanism includes rotary valve and water injection well choke, and the rotary valve is connected with the actuating mechanism transmission, and actuating mechanism can make the rotary valve rotate, and the rotation of rotary valve can decide the water inlet of water injection well choke and compare in the aperture of the sealed lug of rotary valve to the flow of the delivery port of water injection well choke is flowed through by the water inlet of water injection well choke to control water injection liquid.

Optionally, in a possible implementation manner, the water distributor further includes a water inlet pipe, one end of the water inlet pipe is closed, the other end of the water inlet pipe is connected to the water inlet tank, and a section of the water inlet pipe close to the first joint is provided with a through hole. The water inlet pipe is provided with a flow sensor.

In the above-mentioned scheme, a concrete structure of control water injection liquid flow direction is provided, wherein, the inlet tube has been increased, make water injection liquid flow through the limbers of mainstream through-line pipeline, sealed cavity, the inlet tube, the intake chamber, water guide channel, finally get into in the water injection channel, wherein, the position that the inlet tube communicates with sealed cavity is located the position department that the inlet tube is close to first joint, through the above-mentioned design, make water injection liquid flow out the sealed cavity back of entering through the limbers of mainstream through-line pipeline, further fill in sealed cavity, submerge actuating mechanism, just at last get into in the inlet tube by the through-hole that one section of inlet tube was seted up near first joint, guaranteed effectively that actuating mechanism does not receive corrosive gas's influence, also avoid appearing gaseous in the sealed cavity simultaneously.

Optionally, in a possible implementation manner, the water nozzle has two water injection holes, the cross sections of the water injection holes are rhombic, inlets of the two water injection holes are far away from each other, and outlets of the two water injection holes are close to each other;

the quantity of the sealing convex blocks is two, and the two sealing convex blocks are respectively matched with the inlets of the water injection holes, so that the sealing convex blocks can block the water injection holes under the driving of the driving mechanism.

In the above-mentioned scheme, provided the concrete structure of water injection well choke, through the cooperation of above-mentioned water injection hole and sealed lug, can obtain good every angle closed area's linearization, better implementation precision water injection control.

Optionally, in a possible implementation manner, the end surface of the water nozzle is provided with a positioning pin, and the positioning pin is used for abutting against the sealing convex block.

In the above scheme, the dowel pin is used for abutting against the sealing convex blocks, the rotating angle of the rotary valve is limited, wherein, in one possibility, when one of the sealing convex blocks abuts against the dowel pin during rotation, the two sealing convex blocks completely block the two water injection holes, the flow of the water injection liquid is zero, when the other sealing convex block abuts against the dowel pin during rotation, the two water injection holes are completely opened by the two sealing convex blocks, and the flow of the water injection liquid is maximum.

Optionally, in a possible implementation manner, a pin shaft hole is formed in an outer wall of the second joint, and a positioning concave surface is formed on a circumferential wall of the water nozzle;

the water nozzle penetrates through the pin shaft hole through the locking pin and abuts against the positioning concave surface to be fixed in the water injection channel.

Among the above-mentioned scheme, a water injection well choke assembly is in the cooperation structure of second joint is provided, wherein, thereby the water injection well choke is put into by water injection passageway, thereby supports through leaning on of stop pin and fixes in water injection passageway, above-mentioned assembly structure is simple effective, easily makes.

Optionally, in a possible implementation manner, a square hole is formed in the end face of the rotary valve, and the output shaft of the driving mechanism is embedded in the square hole;

the output shaft is sleeved with a motor spring, and the motor spring is positioned between the rotary valve and the driving mechanism.

Optionally, in one possible implementation, the water distributor further comprises a cable;

the driving mechanism comprises a controller and a motor, the controller is electrically connected with the motor, the controller is positioned in the sealed cavity, and the motor is in transmission connection with the rotary valve mechanism;

the second connector is provided with a cable channel, and the cable enters the sealed cavity through the cable channel and is electrically connected with the controller.

In the scheme, the driving mechanism comprises the controller, so that the water distributor has the conditions of data transmission and motor control, and the working requirement of the water distributor is facilitated.

Optionally, in a possible implementation, the water distributor further comprises a sand control valve and a sand control plug;

the second connects the sand control passageway that has intercommunication water injection passageway, and the sand control end cap is fixed in the outer end of sand control passageway, and the sand control valve is located the sand control passageway, has the spring between sand control valve and the sand control end cap, and the export of shutoff water injection passageway is down in the effect of spring to the sand control valve.

In the above scheme, because when the water injection is stopped to the water injection mandrel, the pressure in the water injection mandrel is consistent with the annular pressure, in order to avoid the liquid in the annular to take sand to enter into the water injection channel, the sand prevention valve, the spring and the sand prevention plug are added. When the water injection is carried out to the water injection mandrel, under the effect of pressure differential, water injection liquid can promote the sand control end cap, overcomes the elastic force of spring and removes to water injection liquid can be discharged by the export of water injection passageway, and when stopping the water injection, the export of sand control valve shutoff water injection passageway under the effect of spring is with the effect of realization sand control.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

FIG. 1 is a schematic view of a water distributor in an embodiment of the present disclosure from a first perspective;

FIG. 2 is an enlarged view taken at II in FIG. 1;

FIG. 3 is a schematic structural view of a water distributor in a second view in an embodiment of the present application;

FIG. 4 is a schematic view of a second joint according to an embodiment of the present disclosure from a first perspective;

FIG. 5 is a schematic structural view of a water distributor at a third viewing angle in an embodiment of the present application;

FIG. 6 is an enlarged view taken at VI in FIG. 5;

FIG. 7 is a schematic structural diagram of a water nozzle in a first viewing angle in the embodiment of the present application;

FIG. 8 is a schematic structural diagram of the water nozzle at a second viewing angle in the embodiment of the present application;

FIG. 9 is a schematic view of a rotary valve according to an embodiment of the present application;

FIG. 10 is a schematic view of a water distributor according to an embodiment of the present disclosure from a fourth perspective;

FIG. 11 is a schematic view illustrating the assembly of the faucet and the rotary valve in the embodiment of the present application;

FIG. 12 is a schematic view of a second joint according to an embodiment of the present disclosure from a second perspective;

fig. 13 is a schematic structural diagram of a second joint in a third view according to an embodiment of the present application.

Icon: 10-a water distributor; 10 a-a housing; 11-a first joint; 12-a second linker; 12 a-a locking pin; 12 b-a plug screw; 12 c-a woodruff bond; 13-main flow-through duct; 14-rotating the valve mechanism; 15-a drive mechanism; 15 a-motor spring; 16-a locking ring; 17-a water inlet pipe; 18 a-sand control valve; 18 b-sand control plugs; 18 c-a spring; 81-a first main flow channel; 82-a second primary flow channel; 90-a water injection channel; 90 a-a water inlet tank; 90 b-a water conducting channel; 90 c-cable channel; 90 d-pressure temperature integrated sensor interface; 130-water through holes; 140-a rotary valve; 140 a-sealing bumps; 141-water nozzle; 141 a-water injection hole; 141 b-locating pins; 141 c-concave positioning surface; 170-through holes.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present application, it is to be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, refer to the orientation or positional relationship as shown in the drawings, or as conventionally placed in use of the product of the application, or as conventionally understood by those skilled in the art, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be considered as limiting the present application.

Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

The technical solution in the present application will be described below with reference to the accompanying drawings.

The present embodiment provides a water distributor 10 that effectively solves the problem of the prior art water distributor 10 in which the service life of the actuator is not long.

Referring to fig. 1 and 2, fig. 1 shows a specific structure of a water distributor 10 in a first viewing angle in the present embodiment.

Fig. 2 is an enlarged view of fig. 1 at ii.

The water distributor 10 comprises a housing 10a, a first connection 11, a second connection 12, a main flow conduit 13, a rotary valve mechanism 14 and a drive mechanism 15. The first joint 11 has a first main flow passage 81. The second connector 12 has a water filling channel 90 and a second main flow channel 82 which are independent of each other. The limbers 130 have been seted up to the perisporium of mainstream pipeline 13, the one end of mainstream pipeline 13 is connected in first joint 11 and is linked together with first mainstream passageway 81, the other end of mainstream pipeline 13 is connected in second joint 12 and is linked together with second mainstream passageway 82, shell 10a sets up between first joint 11 and second joint 12, shell 10a, first joint 11 and second joint 12 limit sealed cavity jointly, mainstream pipeline 13 is located sealed cavity, sealed cavity and water filling channel 90 communicate. The rotary valve mechanism 14 is located in the fill passage 90. The drive mechanism 15 is connected to the rotary valve mechanism 14 and serves to drive the rotary valve mechanism 14 to open or close the water filling passage 90.

Wherein the water distributor 10 is capable of effectively protecting the drive mechanism 15 for driving the rotary valve mechanism 14 during water injection (stratified water) use, which enables the drive mechanism 15 (actuator) to be in a safe, non-corrosive gas environment.

Wherein, first joint 11 and second joint 12 are upper joint and lower clutch in this field respectively, and first joint 11, mainstream through pipe and second joint 12 connect gradually for first mainstream passageway 81 of first joint 11, mainstream through pipeline 13 and second mainstream passageway 82 of second joint 12 communicate in proper order, and the water injection liquid is leading-in to flow through mainstream through pipeline 13, second mainstream passageway 82 through first mainstream passageway 81 of first joint 11 in order to realize carrying out can layering distribution to the stratum of different depths (a plurality of water distributors 10 can splice the use, in order to realize the stratum work of different depths). Wherein the water injection channel 90 in the second connector 12 is used for water injection (distribution) to maintain formation pressure. In order to ensure that the driving mechanism 15 for controlling the water injection opening degree is in an environment without corrosive gas in operation, the first joint 11, the second joint 12 and the main flow pipeline 13 are further provided with a shell 10a at the periphery, the shell 10a, the first joint 11 and the second joint 12 jointly define a sealed cavity, and the water injection channel 90 of the second joint 12 is communicated with the sealed cavity. The main flow pipe 13 is positioned in the sealed cavity, the peripheral wall of the main flow passage is provided with a water through hole 130, the water injection liquid introduced from the first main flow passage 81 flows into the sealed cavity from the water through hole 130 in the main flow pipe 13, the water injection liquid flows to the water injection passage 90 of the second joint 12, before flowing to the water injection passage 90, the water injection liquid firstly fills the cavity where the driving mechanism 15 is positioned, so that the driving connection position of the driving mechanism 15 and the rotary valve mechanism 14 is filled with the water injection liquid, thereby the driving mechanism 15 is exposed to the outside and the part connected with the rotary valve mechanism 14 is positioned in the environment sealed by the water injection liquid, the possibility of contacting with gas is avoided, the driving part of the driving mechanism 15 is effectively ensured not to be influenced by the gas corrosion, finally, the water injection liquid can flow out from the outlet of the water injection passage 90 under the condition that the driving mechanism 15 drives the rotary valve mechanism 14, and finishing the water injection work.

Optionally, in a possible implementation manner, please refer to fig. 3, fig. 3 shows a specific structure of the water distributor 10 in the second viewing angle in the present embodiment.

The water distributor 10 further comprises a locking ring 16, one end of the housing 10a is threadedly coupled to one end of the second joint 12, and the other end of the housing 10a is sealed to the wall surface of the first joint 11 by the locking ring 16.

The above-mentioned method for assembling the housing 10a, the first joint 11 and the second joint 12 is provided, wherein one end of the housing 10a is connected with the second joint 12 by a screw thread, and the other end of the housing 10a is connected with the first joint 11 by a locking ring 16 in a sealing manner, so that a sealing cavity with good sealing effect is formed between the inner cavity of the housing 10a and the end surfaces of the first joint 11 and the second joint 12, and meanwhile, the assembling process among the housing 10a, the first joint 11 and the second joint 12 is simple and efficient due to the matching manner of the screw thread connection and the clamping of the locking ring 16, and the assembly, disassembly and replacement are also convenient.

In the present embodiment, the outer shell 10a, the first joint 11 and the second joint 12 are connected by a detachable assembly method, and in other embodiments, after the assembly of the internal components of the water distributor 10 is completed, the outer shell 10a may be directly welded between the first joint 11 and the second joint 12, so as to form an integral connection structure.

Optionally, in an implementation manner of a possible implementation, please refer to fig. 4, 5 and 6, fig. 4 shows a specific structure of the second joint 12 in the first viewing angle in the present embodiment, and fig. 5 shows a specific structure of the water distributor 10 in the present embodiment in the third viewing angle. Fig. 6 is an enlarged view taken at vi in fig. 5.

The end surface of the second joint 12 is provided with a water inlet groove 90a, and the bottom end of the water inlet groove 90a extends to form a water guide channel 90b communicated with the water injection channel 90.

The rotary valve mechanism 14 includes a rotary valve 140 and a water nozzle 141.

Referring to fig. 7, 8 and 9, fig. 7 shows a specific structure of the water nozzle 141 in the embodiment at a first viewing angle, fig. 8 shows a specific structure of the water nozzle 141 in the embodiment at a second viewing angle, and fig. 9 shows a specific structure of the rotary valve 140 in the embodiment.

The water nozzle 141 is fixed in the water injection channel 90, the water nozzle 141 is provided with a water inlet and a water outlet which are communicated with each other, the water outlet is communicated with the outlet of the water injection channel 90, the water inlet is communicated with the water guide channel 90b, and the water injection channel 90 is communicated with the sealed cavity through the water nozzle 141 and the water guide channel 90 b. One end of the rotary valve 140 is drivingly connected to the driving mechanism 15, and the other end surface of the rotary valve 140 has a sealing projection 140a, and the sealing projection 140a is configured to close or open the water inlet under the driving of the driving mechanism 15.

As can be seen from fig. 1 and 5, after the injection liquid flows out through the water passage hole 130 of the main flow passage 13, the injection liquid fills the gap between the driving mechanism 15 and the rotary valve mechanism 14 and flows into the injection passage 90 through the water inlet tank 90a and the water guide passage 90 b.

Wherein, the rotary valve mechanism 14 includes rotary valve 140 and water injection well choke 141, and rotary valve 140 is connected with actuating mechanism 15 transmission, and actuating mechanism 15 can make rotary valve 140 rotate, and the rotation of rotary valve 140 can determine the water inlet of water injection well choke 141 and compare in the aperture of rotary valve 140's sealed lug 140a to the flow of the delivery port of water injection well choke 141 is flowed through by the water inlet of water injection well choke 141 to the control.

It should be noted that, as shown in fig. 5, the rotary valve 140 and the water nozzle 141 are both located in the water filling channel 90, the portion of the rotary valve mechanism 14 that is in transmission with the rotary valve 140 is also located in the water filling channel 90, and the water guide channel 90b is located between the rotary valve 140 and the water nozzle 141.

Optionally, in an implementation manner of a possible implementation, please refer to fig. 10, where fig. 10 shows a specific structure of the water distributor 10 in a fourth view angle in the present embodiment. At this time, fig. 10 is shown with the housing 10a removed for clarity in understanding the structure described below.

The water distributor 10 further comprises a water inlet pipe 17, one end of the water inlet pipe 17 is closed, the other end of the water inlet pipe 17 is connected to the water inlet groove 90a, and a section of the water inlet pipe 17 close to the first joint 11 is provided with a through hole 170.

Wherein, the inlet tube 17 has been increased, make the water injection liquid flow through the limbers 130 of mainstream through-line pipeline 13, sealed cavity, inlet tube 17, inlet channel 90a, water guide channel 90b, finally get into water injection passageway 90, wherein, the position that inlet tube 17 and sealed cavity intercommunication is located the position department that inlet tube 17 is close to first joint 11, through above-mentioned design, make water injection liquid flow out the sealed cavity of entering through the limbers 130 of mainstream through-line pipeline 13 after, further fill in sealed cavity, submerge actuating mechanism 15, just at last get into in the inlet tube 17 by the through-hole 170 that one section of inlet tube 17 that is close to first joint 11 was seted up, guaranteed effectively that actuating mechanism 15 does not receive corrosive gas's influence, also avoid appearing gaseous in the sealed cavity simultaneously.

Alternatively, in one possible implementation, the water nozzle 141 has two water injection holes 141a (which define the water inlet and the water outlet of the water nozzle 141 that are communicated with each other), the cross section of the water injection holes 141a is diamond-shaped, the inlets of the two water injection holes 141a are far away from each other, and the outlets of the two water injection holes 141a are close to each other. The number of the sealing protrusions 140a is two, and the two sealing protrusions 140a are respectively matched with the inlets of the water injection holes 141a, so that the sealing protrusions 140a can block the water injection holes 141a under the driving of the driving mechanism 15.

Referring to fig. 7 and 8 again, due to the diamond design, the matching between the water injection holes 141a and the sealing protrusion 140a can achieve good linearity of the closing area per angle, so as to better implement precise water injection control, and meanwhile, since the inlets of the two water injection holes 141a are far away from each other and the outlets of the two water injection holes 141a are close to each other, the water injection liquid can be bundled when flowing through the water injection holes 141a, thereby increasing the water outlet pressure of the water injection liquid.

Referring to fig. 11, fig. 11 shows the assembling effect of the water nozzle 141 and the rotary valve 140 in this embodiment.

The end face of the water nozzle 141 is provided with a positioning pin 141b, and the positioning pin 141b is used for abutting against the sealing convex block 140 a.

The positioning pins 141b are used to abut against the sealing protrusions 140a to define the angle of rotation of the rotary valve 140, wherein, in one possibility, when one of the sealing protrusions 140a abuts against the positioning pin 141b during rotation, it represents that the two sealing protrusions 140a completely block the two water injection holes 141a, and the flow rate of the injected liquid is zero, and when the other sealing protrusion 140a abuts against the positioning pin 141b during rotation, it represents that the two sealing protrusions 140a completely open the two water injection holes 141a, and the flow rate of the injected liquid is maximum.

Alternatively, in a possible implementation manner, please refer to fig. 2, the outer wall of the second joint 12 is provided with a pin shaft hole, and the circumferential wall of the water nozzle 141 is provided with a positioning concave surface 141 c. The water nozzle 141 is inserted into the pin shaft hole through the locking pin 12a and abuts against the positioning concave surface 141c to be fixed in the water injection channel 90. Wherein the locking pin 12a is sealed in the pin shaft hole by a plug screw 12 b.

Wherein, water injection well choke 141 is put into by water injection passageway 90, thereby fix in water injection passageway 90 through the support of locking pin 12a, above-mentioned assembly structure is simple effective, easily makes.

Alternatively, in one possible implementation, the end face of the rotary valve 140 is provided with a square hole, and the output shaft of the driving mechanism 15 is embedded in the square hole. The output shaft is sleeved with a motor spring 15a, and the motor spring 15a is positioned between the rotary valve 140 and the driving mechanism 15.

In other embodiments, the structure of the rotary valve 140 connected to the output shaft of the driving mechanism 15 is not limited to a hole-like structure, and may be a structure such as a projection, and the output shaft may be connected to the rotary valve 140 in a driving manner. Meanwhile, please refer to fig. 12, wherein fig. 12 shows a specific structure of the second joint 12 at a second viewing angle.

The inner wall of the water injection channel 90 of the second joint 12 is provided with a semi-circular key 12c, the semi-circular key 12c is fixed in the groove of the water injection channel 90, the plane of the semi-circular key 12c is attached to the peripheral wall of the driving mechanism 15, the reason is that the motor spring 15a is compressed by the driving mechanism 15, the rotary valve 140 can transmit a pretightening force to the water nozzle 141, and the semi-circular key 12c aims to enable the driving mechanism 15 to bear the reaction torque generated when the output shaft of the driving mechanism 15 rotates.

Wherein optionally in an embodiment of a possible realization the water distributor 10 further comprises a cable (not shown in the figures).

The driving mechanism 15 comprises a controller and a motor, the controller is electrically connected with the motor, the controller is located in the sealed cavity, and the motor is in transmission connection with the rotary valve mechanism 14.

Referring to fig. 13, fig. 13 shows a specific structure of the second joint 12 in a third view.

The second connector 12 has a cable passage 90c, and the cable enters the sealed cavity through the cable passage 90c and is electrically connected with the controller.

Wherein the drive mechanism 15 includes controls to allow data transfer, motor controlled conditions to the water distributor 10 to facilitate the operational requirements of the water distributor 10. It should be noted that the controller in this embodiment is the same as the controller in the water distributor in the prior art, and can control the motor, and it should be noted that the motor can be used in conjunction with the speed reducer, and the electric signal given by the cable on the ground is transmitted to the controller by the cable (or the electric signal given by the wireless transmission system is transmitted to the controller wirelessly, as needed), so as to control the motor to rotate, and the rotary valve 140 is controlled to rotate slowly by the action of the speed reducer, so as to open and close the opening of the water nozzle 141.

It should be noted that a flow sensor may be further disposed in the water inlet pipe 17, the flow sensor may be disposed in the water inlet groove 90a of the second joint 12, and referring to fig. 12, a pressure and temperature integrated sensor interface 90d is further disposed on an end surface of the second joint 12, and the pressure and temperature integrated sensor interface 90d is used for assembling the pressure and temperature integrated sensor, wherein the flow sensor and the flow sensor are both connected to a cable and electrically connected to the controller, and are collected by a data collection module in the controller and sent to the ground device.

Referring to fig. 1, in one possible implementation, the water distributor 10 further includes a sand control valve 18a and a sand control plug 18 b. The second joint 12 is provided with a sand control channel communicated with the water injection channel 90, the sand control plug 18b is fixed at the outer end of the sand control channel, the sand control valve 18a is positioned in the sand control channel, a spring is arranged between the sand control valve 18a and the sand control plug 18b, and the sand control valve 18a plugs the outlet of the water injection channel 90 under the action of the spring.

Wherein, when the water injection of water injection mandrel 10 stopped, the pressure in the water injection mandrel 10 was unanimous with annular pressure, in order to avoid the liquid in the annular to take sand to enter into water injection passageway 90, had increased sand control valve 18a, spring 18c and sand control end cap 18 b. When water injection is carried out to the water distributor 10, under the effect of pressure differential, water injection liquid can promote the sand control end cap 18b, overcomes the elastic force of spring 18c and removes to water injection liquid can be discharged by the export of water injection passageway 90, and when stopping the water injection, sand control valve 18a blocks off the export of water injection passageway 90 under the effect of spring 18c, in order to realize the effect of sand control.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A water distributor, comprising:

a housing;

a first fitting having a first primary flow passage;

a second joint having a water injection passage and a second main flow passage independent of each other;

a main flow pipe, a peripheral wall of which is provided with a water through hole, one end of the main flow pipe is connected to the first joint and communicated with the first main flow channel, the other end of the main flow pipe is connected to the second joint and communicated with the second main flow channel, the housing is arranged between the first joint and the second joint, the housing, the first joint and the second joint jointly define a sealed cavity, the main flow pipe is located in the sealed cavity, and the sealed cavity is communicated with the water injection channel, so that water flows into the water injection channel from the water through hole through the sealed cavity;

a rotary valve mechanism located in the water injection channel; and

the driving mechanism is arranged in the sealed cavity and is connected with the rotary valve mechanism and used for driving the rotary valve mechanism to be conducted or cut off the water injection channel, and meanwhile, the water flowing into the water injection channel from the sealed cavity can fill the sealed cavity where the driving mechanism is located and the water injection channel where the rotary valve mechanism is located, so that the driving mechanism and the rotary valve mechanism are located in the environment sealed by water.

2. The water distributor as defined in claim 1, further comprising:

locking a ring;

one end of the shell is connected with one end of the second joint in a threaded mode, and the other end of the shell is sealed on the wall surface of the first joint through the locking ring.

3. The water distributor according to claim 1,

a water inlet groove is formed in the end face of the second joint, and a water guide channel communicated with the water injection channel extends from the bottom end of the water inlet groove;

the rotary valve mechanism comprises a rotary valve and a water nozzle, the water nozzle is fixed in the water injection channel, the water nozzle is provided with a water inlet and a water outlet which are communicated with each other, the water outlet is communicated with the outlet of the water injection channel, the water inlet is communicated with the water guide channel, and the water injection channel is communicated with the sealed cavity through the water nozzle and the water guide channel;

4. The water distributor as defined in claim 3, further comprising

The inlet tube, the one end of inlet tube is sealed, the other end of inlet tube connect in the intake chamber, the inlet tube be close to the through-hole has been seted up to one section of first joint.

5. A water distributor as defined in claim 3,

the water nozzle is provided with two water injection holes, the cross sections of the water injection holes are in a diamond shape, the inlets of the two water injection holes are far away from each other, and the outlets of the two water injection holes are close to each other;

the number of the sealing convex blocks is two, and the two sealing convex blocks are respectively matched with the inlets of the water injection holes, so that the sealing convex blocks can block the water injection holes under the driving of the driving mechanism.

6. The water distributor according to claim 5,

the end face of the water nozzle is provided with a positioning pin which is used for being abutted to the sealing convex block.

7. The water distributor according to claim 5,

the outer wall of the second joint is provided with a pin shaft hole, and the circumferential wall of the water nozzle is provided with a positioning concave surface;

8. The water distributor according to claim 5,

a square hole is formed in the end face of the rotary valve, and an output shaft of the driving mechanism is embedded in the square hole;

the output shaft is sleeved with a motor spring, and the motor spring is located between the rotary valve and the driving mechanism.

9. The water distributor as defined in claim 1, further comprising:

a cable;

10. The water distributor as defined in claim 1, further comprising:

a sand control valve; and

a sand prevention plug;

the second joint has the intercommunication the sand control passageway of water injection passageway, the sand control end cap is fixed in the outer end of sand control passageway, the sand control valve is located in the sand control passageway, the sand control valve with the spring has between the sand control end cap, the sand control valve is in the shutoff under the effect of spring the export of water injection passageway.