CN211115941U - Injection-production communicating vessel and injection-production-down-production process pipe column - Google Patents
Injection-production communicating vessel and injection-production-down-production process pipe column Download PDFInfo
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- CN211115941U CN211115941U CN201921316696.3U CN201921316696U CN211115941U CN 211115941 U CN211115941 U CN 211115941U CN 201921316696 U CN201921316696 U CN 201921316696U CN 211115941 U CN211115941 U CN 211115941U
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Abstract
The utility model relates to an oil development equipment technical field, concretely relates to annotate and adopt linker and annotate and adopt technology tubular column down. The lower injection and upper production process pipe column comprises a packer with an inner central pipe and an outer central pipe, an upper end head, a lower end head, a central channel, a water injection channel and an oil extraction channel. When the injection and production work is carried out, the water injection communicating device is connected to the lower end of the packer in a sealing mode, the inner central tube is communicated with the oil production layer through the central channel and the oil production channel, the water injection annulus bypasses the oil production layer through the water injection channel and is communicated with the water injection layer on the lower layer, then the oil can be pumped from the upper oil production layer through the oil tube, the inner central tube, the central channel and the oil production channel, water can be injected into the water injection layer on the lower layer through the oil sleeve annulus, the water injection annulus and the water injection channel, and the. Like this, adopt the linker and use with the packer cooperation through increasing the notes, under the prerequisite that does not reform transform the packer, realize annotating and adopt and go on when going on of work down, and simple structure, convenient to use.
Description
Technical Field
The utility model relates to an oil development equipment technical field, concretely relates to annotate and adopt linker and annotate and adopt technology tubular column down.
Background
In traditional oil exploitation, water injection and oil extraction are respectively realized through a water injection well and an oil production well, the water injection well can only be used for water injection, the oil production well can only be used for oil extraction, the purpose is single, and the utilization rate of each single well is low. With the development of the petroleum industry, the requirements on the functions of a single well are gradually improved, the requirements on water injection and oil extraction are required, the single well injection and production process technology is developed, and the technology realizes oil extraction and water injection in a well.
In order to further improve the injection and production efficiency, injection and production work in a single well are required to be performed simultaneously. Generally speaking, if the water injection layer is on the top and the oil production layer is on the bottom, the oil production layer and the water injection layer can be sealed by a packer, then water is injected by using an oil sleeve annulus (an annular space between an oil pipe and an underground casing pipe), and the oil pipe is used for pumping oil to the oil production layer on the lower layer, so that simultaneous injection and production are realized; when the oil production layer is close to the upper part and the water injection layer is close to the lower part, the water in the oil sleeve annulus needs to bypass the oil production layer and is injected into the water injection layer below, and meanwhile, the oil production layer is pumped by using the oil pipe, so that the realization is troublesome. In view of the above, the chinese patent application publication No. CN107780904A discloses a water injection oil production string, which utilizes a first packer to seal off an oil jacket annulus above an oil production layer, and utilizes a second packer to seal off an oil production layer and a water injection layer below the oil production layer, wherein two left and right parallel pipelines are arranged in a central tube of the first packer, which are respectively an oil production pipe and a water injection pipe, an upper opening of the oil production pipe is communicated with an upper oil pipe, and a lower opening is positioned on a side surface of a lower end of the packer and is communicated with the oil production layer; the upper end side that the upper shed of water injection pipe is located the packer communicates with the oil jacket annular space, and the under shed sets up the lower extreme at first packer, leads to lower floor's water injection section. The water injection oil production pipe column utilizes the water injection pipe to introduce water in the oil sleeve annulus to the lower water injection layer, and utilizes the oil production pipe to pump oil liquid in the upper oil production layer out through the oil pipe, so that the down-injection and up-production are realized.
It can be seen that although the water injection oil production pipe column realizes the simultaneous operation of single-well injection and down-production, the oil production pipe and the water injection pipe which are arranged in parallel are added in the packer, and the side surfaces of the upper end and the lower end of the packer are respectively provided with the upper opening of the water injection pipe and the lower opening of the oil production pipe, so that the inner structure and the outer structure of the original packer are respectively modified, the structure is complex, and the modification difficulty is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an injection-production communicating vessel which realizes simultaneous operation of injection-production and production without modifying the packer, and has simple structure and convenient use; an object of the utility model is to provide an use this annotate and adopt technology tubular column of adopting under notes of linker for conveniently realize annotating and adopt work down.
In order to achieve the purpose, the utility model discloses annotate and adopt following technical scheme:
an injection-production communicating vessel comprising:
the upper end head is used for being hermetically connected with the lower end of a packer with an inner central pipe and an outer central pipe;
a lower end head having a lower end opening for discharging the injection water;
the central channel extends up and down, the upper end of the central channel is provided with an opening, the lower end of the central channel is closed, and the upper end opening of the central channel is used for being in sealing fit with the lower end opening of the inner central tube of the packer so as to be communicated with the inner central tube;
the water injection channel extends up and down and is positioned on the periphery of the central channel, the water injection channel and the central channel are mutually independent, the upper end of the water injection channel is used for being in sealing connection with an annular opening at the lower end of a water injection annular space formed between the inner central tube and the outer central tube of the packer, and the lower end of the water injection channel is communicated with the lower end opening;
the oil extraction channel extends radially and is provided with an inner opening and an outer opening, the oil extraction channel is mutually independent of the water injection channel, the inner opening of the oil extraction channel is communicated with the central channel in the lateral direction, and the outer opening of the oil extraction channel is arranged on the outer peripheral surface of the injection-production communicating device and is used for communicating an oil extraction layer.
The beneficial effects of the above technical scheme are: when the injection and production work is carried out, the water injection communicating device is connected to the lower end of the packer in a sealing mode, the inner central tube is communicated with the oil production layer through the central channel and the oil production channel, the water injection annulus bypasses the oil production layer through the water injection channel and is communicated with the water injection layer on the lower layer, then the oil can be pumped from the upper oil production layer through the oil tube, the inner central tube, the central channel and the oil production channel, water can be injected into the water injection layer on the lower layer through the oil sleeve annulus, the water injection annulus and the water injection channel, and the. Like this, adopt the linker and use with the packer cooperation through increasing the notes, under the prerequisite that does not reform transform the packer, realize annotating and adopt and go on when going on of work down, and simple structure, convenient to use.
Furthermore, the injection-production communicating vessel comprises a sleeve body and a transition pipe body, wherein the upper end is the upper end of the transition pipe body, and the lower end is the lower end of the sleeve body;
the transition pipe body includes: the upper end of the inner pipe body is used for being in sealing fit with an opening at the lower end of an inner central pipe of the packer, the upper end of the outer pipe body is used for being in sealing connection with an annular opening at the lower end of the packer, a liquid passing annular space extending up and down is arranged between the inner pipe body and the outer pipe body, and the liquid passing annular space is used for being communicated with a water injection annular space of the packer;
the cover body comprises:
the upper end of the central hole is open and is hermetically connected with the lower end of the inner pipe body, the lower end of the central hole is closed, and the inner channel and the central hole of the inner pipe body form the central channel;
the upper end and the lower end of the water injection hole are respectively communicated with the liquid passing annular space and the lower end opening at the lower end of the sleeve body, and the water injection hole and the liquid passing annular space form a water injection channel;
the oil extraction channel is arranged on the sleeve body, the outer opening of the oil extraction channel is arranged on the outer peripheral surface of the sleeve body, and the inner opening of the oil extraction channel is arranged on the hole wall of the central hole of the sleeve body.
Has the advantages that: the injection-production communicating vessel is divided into the transition pipe body and the sleeve body, so that the injection-production communicating vessel is convenient to arrange.
Furthermore, the number of the water injection holes is multiple, the water injection holes are arranged at intervals along the peripheral circumference of the central hole, and the oil extraction channel is positioned between the adjacent water injection holes. The multiple water injection holes facilitate rapid water injection, and the oil extraction channel is located between the adjacent water injection holes, so that mutual independence between the oil extraction access and the water injection channel is ensured.
Furthermore, a plurality of centralizing blocks are arranged between the inner pipe body and the outer pipe body, the plurality of centralizing blocks are arranged at intervals along the circumferential direction of the outer peripheral surface of the inner pipe body, and gaps between the centralizing blocks are communicated with liquid passing annuluses on the upper side and the lower side of the centralizing blocks. The centering block prevents the inner pipe body from deflecting in the outer pipe body, and ensures the stable operation of injection and production.
Furthermore, the oil extraction channel is obliquely arranged from top to bottom and from inside to outside, and the included angle between the axis of the oil extraction channel and the axis of the central channel is 45 degrees. The oil extraction channel is obliquely arranged from top to bottom and from inside to outside, so that the blockage caused by accumulation of stratum sand in the oil extraction channel during oil extraction is avoided.
In order to achieve the purpose, the utility model discloses annotate and adopt following technical scheme down to adopt the technology tubular column:
a bottom-injection and top-production process string comprising:
the packer is used for sealing and isolating an oil sleeve annulus above an oil production layer and is provided with an inner central pipe and an outer central pipe, the upper end of the inner central pipe is used for connecting an oil pipe, and a setting assembly is arranged on the outer side of the outer central pipe;
a water injection annulus extending up and down is arranged between the inner central tube and the outer central tube, a water inlet is arranged on the side wall of the outer central tube and is used for communicating the oil sleeve annulus above the packer with the water injection annulus, and the packer is respectively provided with a central tube opening positioned at the lower end of the inner central tube and an annulus opening positioned at the lower end of the water injection annulus;
an injection-production communicating vessel comprising:
the upper end head is hermetically connected to the lower end of the packer;
a lower end head having a lower end opening for discharging the injection water;
the central channel extends up and down, the upper end of the central channel is provided with an opening, the lower end of the central channel is closed, and the upper end opening of the central channel is in sealing fit with the central tube opening of the packer so as to be communicated with the inner central tube;
the water injection channel extends up and down and is positioned at the periphery of the central channel, the water injection channel and the central channel are mutually independent, the upper end of the water injection channel is hermetically connected with the annular opening, and the lower end of the water injection channel is communicated with the lower end opening;
the oil extraction channel extends radially and is provided with an inner opening and an outer opening, the oil extraction channel is mutually independent of the water injection channel, the inner opening of the oil extraction channel is communicated with the central channel in the lateral direction, and the outer opening of the oil extraction channel is arranged on the outer peripheral surface of the injection-production communicating device and is used for communicating an oil extraction layer.
The beneficial effects of the above technical scheme are: when the injection and production work is carried out, the water injection communicating device is connected to the lower end of the packer in a sealing mode, the inner central tube is communicated with the oil production layer through the central channel and the oil production channel, the water injection annulus bypasses the oil production layer through the water injection channel and is communicated with the water injection layer on the lower layer, then the oil can be pumped from the upper oil production layer through the oil tube, the inner central tube, the central channel and the oil production channel, water can be injected into the water injection layer on the lower layer through the oil sleeve annulus, the water injection annulus and the water injection channel, and the. Like this, adopt the linker and use with the packer cooperation through increasing the notes, under the prerequisite that does not reform transform the packer, realize annotating and adopt and go on when going on of work down, and simple structure, convenient to use.
Furthermore, the injection-production communicating vessel comprises a sleeve body and a transition pipe body, wherein the upper end is the upper end of the transition pipe body, and the lower end is the lower end of the sleeve body;
the transition pipe body includes: the upper end of the inner pipe body is in sealing fit with an opening of a central pipe of the packer, the upper end of the outer pipe body is in sealing connection with the annular opening, a liquid passing annular space extending up and down is arranged between the inner pipe body and the outer pipe body, and the liquid passing annular space is communicated with the water injection annular space;
the cover body comprises:
the upper end of the central hole is open and is hermetically connected with the lower end of the inner pipe body, the lower end of the central hole is closed, and the inner channel and the central hole of the inner pipe body form the central channel;
the upper end and the lower end of the water injection hole are respectively communicated with the liquid passing annular space and the lower end opening at the lower end of the sleeve body, and the water injection hole and the liquid passing annular space form a water injection channel;
the oil extraction channel is arranged on the sleeve body, the outer opening of the oil extraction channel is arranged on the outer peripheral surface of the sleeve body, and the inner opening of the oil extraction channel is arranged on the hole wall of the central hole of the sleeve body.
The beneficial effects are that: the injection-production communicating vessel is divided into the transition pipe body and the sleeve body, so that the injection-production communicating vessel is convenient to arrange.
Furthermore, the number of the water injection holes is multiple, the water injection holes are arranged at intervals along the peripheral circumference of the central hole, and the oil extraction channel is positioned between the adjacent water injection holes. The multiple water injection holes facilitate rapid water injection, and the oil extraction channel is located between the adjacent water injection holes, so that mutual independence between the oil extraction access and the water injection channel is ensured.
Furthermore, a plurality of centralizing blocks are arranged between the inner pipe body and the outer pipe body, the plurality of centralizing blocks are arranged at intervals along the circumferential direction of the outer peripheral surface of the inner pipe body, and gaps between the centralizing blocks are communicated with liquid passing annuluses on the upper side and the lower side of the centralizing blocks. The centering block prevents the inner pipe body from deflecting in the outer pipe body, and ensures the stable operation of injection and production.
Furthermore, the oil extraction channel is obliquely arranged from top to bottom and from inside to outside, and the included angle between the axis of the oil extraction channel and the axis of the central channel is 45 degrees. The oil extraction channel is obliquely arranged from top to bottom and from inside to outside, so that the blockage caused by accumulation of stratum sand in the oil extraction channel during oil extraction is avoided.
Drawings
FIG. 1 is a schematic structural view of an embodiment of the present invention for injecting, extracting and installing a process pipe string;
FIG. 2 is a schematic view of the connection between the packer and the transition pipe (without the sealing insert pipe) according to the embodiment of the present invention;
FIG. 3 is a first schematic view of a sleeve body according to an embodiment of the present invention;
FIG. 4 is a second schematic structural view of the sleeve body according to the embodiment of the present invention;
FIG. 5 is a top view of FIG. 4;
description of reference numerals: 1-packer, 11-base pipe, 12-releasing pull ring, 13-installation pin, 14-setting press ring, 151-upper slip, 152-lower slip, 161-upper cone, 162-lower cone, 181-upper shoulder rubber sleeve, 182-lower shoulder rubber sleeve, 19-middle rubber sleeve, 20-lower connecting sleeve, 201-water inlet, 2-transition pipe, 21-outer pipe, 22-inner pipe, 23-liquid passing annulus, 24-centralizing block, 3-sleeve body, 31-central hole, 32-water injection hole, 33-oil production channel, 34-inner port, 35-outer port, 4-lower end opening, 5-inclined plane, 6-upper joint, 7-sleeve body and 8-sealing cannula.
Detailed Description
The following further describes the embodiments of the present invention with reference to the attached drawings:
the utility model discloses annotate and adopt the concrete embodiment of technology tubular column down:
as shown in fig. 1 and 2, the injection-production-up process pipe column comprises a packer 1, a transition pipe body 2 and a sleeve body 3 which are connected up and down, in this embodiment, the transition pipe body 2 and the sleeve body 3 jointly form an injection-production communicating vessel, the transition pipe body 2 is hermetically connected to the lower end of the packer 1, and the sleeve body 3 of the injection-production communicating vessel is hermetically connected to the lower end of the transition pipe body 2.
It should be noted that the utility model discloses the main idea of technology tubular column is adopted under notes is that the water injection annular space that forms between the inside and outside center tube of the packer that utilizes inside and outside center tube cooperates with the notes intercommunication ware in order to realize the water injection of lower floor's water injection layer, utilizes the cooperation of the inside center tube of packer and notes intercommunication ware to adopt in order to realize producing oil to the upper oil recovery layer. In the present embodiment, the packer 1 is a bridge plug packer, and a central tube 11 carried by the bridge plug packer itself is used as an outer central tube, while a sealing cannula 8 connected to the lower end of the tubing is used as an inner central tube of the packer 1.
As shown in fig. 1 and 2, the inner side of the packer 1 and the upper end of the central tube 11 are provided with a bevel 5 to facilitate the insertion of the sealing insert tube 8, and the bevel 5 is in sealing engagement with the sealing insert tube 8. A water injection annulus extending up and down is formed between the sealed cannula 8 and the central tube 11. The lower side opening of the sealing spigot 8 forms the base pipe opening of the inner base pipe of the packer 1, the lower end of the water injection annulus having an annulus opening.
The outside of packer 1 has the setting subassembly, and the setting subassembly includes that the releasing pull ring 12 of connection outside the center tube 11, setting clamping ring 14, go up slips 151, go up cone 161, go up shoulder guarantor's packing element 181, well packing element 19, lower shoulder guarantor's packing element 182, lower cone 162, lower slips 152, lower adapter sleeve 20. The releasing pull ring 12 is fixed on the outer peripheral surface of the central tube 11 through the installation pin 13, the upper end of the releasing pull ring 12 is provided with an external thread used for being connected with a bridge plug setting device, and setting is realized through connection of the releasing pull ring 12 and the bridge plug setting device when the packer 1 is set. In the present embodiment, the packer 1 is specifically a conventional bridge plug packer, the setting assembly is a conventional component of the bridge plug packer, and the specific connection arrangement is also common knowledge in the art, and will not be described in detail herein.
The upper end of the center tube 11 of the packer 1 is also provided with a water inlet 201, before unsetting, the water inlet 201 is shielded by a releasing pull ring 12, after setting, the releasing pull ring 12 destroys the installation pin 13 under the upward pulling force of the bridge plug setting device, and moves upward along with the bridge plug setting device, leaves the packer 1, and removes the shielding of the water inlet 201 at the same time, and the water inlet 201 communicates the oil sleeve annulus and the water injection annulus above the packer 1.
As shown in fig. 1 and 2, a transition pipe body 2 is sealingly connected to the lower end of the packer 1. Specifically, the transition pipe body 2 comprises an outer pipe body 21 and an inner pipe body 22, and the upper ends of the outer pipe body 21 and the inner pipe body 22 form the upper end head of the injection-production communicating vessel so as to be connected with the lower end of the packer 1. The upper end of the outer pipe body 21 is provided with an internal thread, the lower annular opening of the lower end of the packer 1 is provided with a lower connecting sleeve 20, the lower connecting sleeve 20 is provided with an internal thread, and the outer pipe body 21 and the lower connecting sleeve 20 are connected through the thread.
The upper end of the inner tube 22 is open, and the inner side of the upper end is also provided with a bevel 5 for the sealing cannula 8 to pass through, and the upper end of the inner tube 22 is in sealing fit with the sealing cannula 8, so that the inner channel of the inner tube 22 is communicated with the sealing cannula 8. A liquid passing annular space 23 extending up and down is arranged between the inner pipe body 22 and the outer pipe body 21, and the liquid passing annular space 23 is communicated with the water injection annular space through an annular opening.
As shown in fig. 1, the jacket body 3 is hermetically connected to the lower end of the transition pipe body 2. In order to facilitate the processing of the sleeve body 3, in the embodiment, the sleeve body 3 is divided into an upper joint 6 and a sleeve body 7. The upper end and the lower end of the upper joint 6 are both provided with internal threads which are respectively in threaded connection with the outer pipe body 21 and the sleeve body main body 7. And the lower side of the threaded connection part of the upper joint 6 and the sleeve body main body 7 is provided with a sealing groove, and a sealing packing is arranged in the sealing groove so as to ensure the sealing connection of the upper joint and the sleeve body. The middle part of the sleeve body main body 7 is provided with a central hole 31, the upper end of the central hole 31 is open and is provided with an internal thread, the central hole 31 is connected with the inner pipe body 22 through threads, the lower side of the threaded connection part of the central hole 31 and the inner pipe body is also provided with a sealing groove, and a sealing packing is arranged in the sealing groove so as to ensure the sealing connection of the central hole 31 and the. The lower end of the central hole 31 is closed, the central hole 31 and the internal channel of the inner tube 22 form a central channel of the injection-production communicating vessel, the central channel extends up and down, and the injection-production communicating vessel is communicated with the sealed cannula 8 through the central channel. In the embodiment, the sleeve body can also be integrally formed and is not separately arranged as the upper joint and the sleeve body main body.
Because the inner pipe body 22 is fixed with the central hole 31 through the lower end, the upper end of the inner pipe body 22 is in a suspension state, in order to avoid deflection in the outer pipe body 21, a plurality of centralizing blocks 24 are welded on the peripheral surface of the upper end of the inner pipe body 22, the plurality of centralizing blocks 24 are arranged at intervals along the circumferential direction of the peripheral surface of the inner pipe body 22, and gaps among the centralizing blocks 24 are communicated with the liquid passing annuluses 23 on the upper side and the lower side of the centralizing blocks 24. In other embodiments, the centering block may be welded to the inner circumferential surface of the outer tube, or the centering block may not be provided.
As shown in fig. 4 and 5, two oil extraction channels 33 are provided on the jacket body 7, and the two oil extraction channels 33 are symmetrically distributed along the circumferential direction of the jacket body 7. The oil extraction channel 33 comprises an inner port 34 and an outer port 35, the inner port 34 is arranged on the hole wall of the central hole 31 of the sleeve body main body 7 to be communicated with the central channel in a lateral direction, and the outer port 35 is arranged on the outer peripheral surface of the sleeve body main body 7 to be communicated with an oil extraction layer. When oil extraction is carried out, the oil pipe pumps oil in an oil extraction layer through the sealing insertion pipe 8, the central channel and the oil extraction channel 33.
In order to avoid the formation sand accumulation in the oil extraction channel 33 during oil extraction and cause blockage, in this embodiment, the oil extraction channel 33 is obliquely arranged from top to bottom and from inside to outside, and the included angle between the axis of the oil extraction channel and the axis of the central channel is 45 °. In other embodiments, the included angle may be changed to other values, or the production passage may be arranged horizontally or inclined upward.
As shown in fig. 1, 3 and 5, the sleeve body 7 is further provided with a plurality of water injection holes 32, and each water injection hole 32 extends up and down, is located at the periphery of the central hole 31, and is circumferentially arranged along the periphery of the central hole 31 at intervals. As shown in fig. 1, the upper end of the water injection hole 32 communicates with the liquid passing annulus 23. The lower end of the sleeve body 7 serves as a lower end head and is provided with a lower end opening 4, and the lower end of the water injection hole 32 is communicated with the lower end opening 4 and is used for discharging the injected water through the lower end opening 4. In addition, in order to avoid cross-flow between the water injection holes 32 and the production passages 33, the production passages 33 are disposed between adjacent water injection holes 32.
Each water injection hole 32 and the liquid passing ring space 23 jointly form a water injection channel of the injection-production communicating vessel, the water injection channel extends up and down and is mutually independent of the central channel, and when water injection is carried out, water flow enters the lower water injection layer from the oil sleeve ring space at the upper end of the self-sealing packer 1, the water inlet 201, the water injection channel and the lower end opening 4.
When the embodiment of the utility model is used, the upper end of the packer 1 is connected with the bridge plug setting device, the bridge plug setting device is connected with the oil pipe, the lower end of the packer 1 is connected with the injection-production communicating device, the packer 1 and the injection-production communicating device are placed into the underground casing along with the oil pipe and the bridge plug setting device, after the packer is placed in the underground oil production layer, a steel ball is thrown into the oil pipe to the ball seat in the bridge plug setting device, hydraulic pressure is pumped into the oil pipe at the well mouth, the hydraulic pressure is transmitted to the steel ball through the oil pipe, the bridge plug setting device goes down to press the setting component of the packer 1, the hydraulic pressure is gradually increased until the upper slip 151 and the lower slip 152 in the setting component of the packer 1 are opened and set on the casing wall, the upper shoulder rubber cylinder 181, the middle rubber cylinder 19 and the lower shoulder rubber cylinder 182 of the packer 1 are compressed and then expanded, the oil sleeve above the oil production layer is sealed and lifted up, the oil pipe applies force to the releasing pull ring 12 through the bridge plug setting device, the mounting pin 13 between the releasing pull ring 12 and the packer 1 is cut off, the oil pipe is lifted continuously, the bridge plug setting device and the releasing pull ring 12 are lifted together to complete the setting action of the packer 1, and meanwhile, the releasing pull ring 12 releases the shielding of the water inlet 201.
Then, an oil well pump and a sucker rod are sequentially arranged in an oil pipe with an upper wellhead, the lower end of the oil pipe is connected with a sealing insertion pipe 8, the oil pipe is lowered to the position of the packer 1 again, the sealing insertion pipe 8 is in sealing fit with a central pipe 11 and an inner pipe body 22 of the packer 1, a water injection annular space is formed between the sealing insertion pipe 8 and the central pipe 11, the interior of the sealing insertion pipe 8 is communicated with a central channel, at the moment, water is injected into the oil sleeve annular space, and water flows into a lower side water injection layer through a water inlet 201, the water injection annular space, a liquid passing annular space 23, a water injection hole 32 and a lower end; oil in the upper oil production layer is pumped through the oil pipe, the sealing insertion pipe 8, the inner channel of the inner pipe body 22, the central hole 31 and the oil production channel 33, and oil production is carried out. And the water injection work and the oil extraction work can be carried out simultaneously.
In this embodiment, the injection-production communicating vessel comprises a sleeve body and a transition pipe body, and the transition pipe body facilitates the connection of the injection-production communicating vessel and the packer. In other embodiments, the transition pipe body is not provided, only the sleeve body is provided, the sleeve body is communicated with the sealed insertion pipe through the central hole, the water injection hole is communicated with the annular space, at the moment, the central hole is a central channel of the injection production communicating device, and the water injection hole is a water injection channel of the injection production communicating device.
In this embodiment, the packer is a bridge plug packer having only one base pipe, with the seal insert forming the inner base pipe of the packer. In other embodiments, the packer can also be a packer with an inner central tube and an outer central tube, such as a water injection packer, in which case, a sealing cannula is not needed, and a water injection annular space is directly formed between the inner central tube and the outer central tube.
The utility model discloses annotate and adopt the concrete embodiment of linker:
the structure of the injection-production communicating vessel is the same as that of the injection-production communicating vessel in each embodiment of the injection-production upper process pipe column, and the details are not repeated here.
Claims (10)
1. Notes adopt linker, its characterized in that includes:
the upper end head is used for being hermetically connected with the lower end of a packer with an inner central pipe and an outer central pipe;
a lower end head having a lower end opening for discharging the injection water;
the central channel extends up and down, the upper end of the central channel is provided with an opening, the lower end of the central channel is closed, and the upper end opening of the central channel is used for being in sealing fit with the lower end opening of the inner central tube of the packer so as to be communicated with the inner central tube;
the water injection channel extends up and down and is positioned on the periphery of the central channel, the water injection channel and the central channel are mutually independent, the upper end of the water injection channel is used for being in sealing connection with an annular opening at the lower end of a water injection annular space formed between the inner central tube and the outer central tube of the packer, and the lower end of the water injection channel is communicated with the lower end opening;
the oil extraction channel extends radially and is provided with an inner opening and an outer opening, the oil extraction channel is mutually independent of the water injection channel, the inner opening of the oil extraction channel is communicated with the central channel in the lateral direction, and the outer opening of the oil extraction channel is arranged on the outer peripheral surface of the injection-production communicating device and is used for communicating an oil extraction layer.
2. The injection-production communicator according to claim 1, wherein: the injection-production communicating vessel comprises a sleeve body and a transition pipe body, wherein the upper end is the upper end of the transition pipe body, and the lower end is the lower end of the sleeve body;
the transition pipe body includes: the upper end of the inner pipe body is used for being in sealing fit with an opening at the lower end of an inner central pipe of the packer, the upper end of the outer pipe body is used for being in sealing connection with an annular opening at the lower end of the packer, a liquid passing annular space extending up and down is arranged between the inner pipe body and the outer pipe body, and the liquid passing annular space is used for being communicated with a water injection annular space of the packer;
the cover body comprises:
the upper end of the central hole is open and is hermetically connected with the lower end of the inner pipe body, the lower end of the central hole is closed, and the inner channel and the central hole of the inner pipe body form the central channel;
the upper end and the lower end of the water injection hole are respectively communicated with the liquid passing annular space and the lower end opening at the lower end of the sleeve body, and the water injection hole and the liquid passing annular space form a water injection channel;
the oil extraction channel is arranged on the sleeve body, the outer opening of the oil extraction channel is arranged on the outer peripheral surface of the sleeve body, and the inner opening of the oil extraction channel is arranged on the hole wall of the central hole of the sleeve body.
3. The injection-production communicator according to claim 2, wherein: the quantity of water injection hole is a plurality of, and a plurality of water injection holes are arranged along the peripheral circumference interval of centre bore, the oil recovery passageway is located between the adjacent water injection hole.
4. The injection-production communicator according to claim 2 or 3, wherein: a plurality of centralizing blocks are arranged between the inner pipe body and the outer pipe body, the plurality of centralizing blocks are arranged at intervals along the circumferential direction of the outer peripheral surface of the inner pipe body, and gaps between the centralizing blocks are communicated with liquid passing annuluses on the upper side and the lower side of the centralizing blocks.
5. The injection-production communicator according to any one of claims 1 to 3, wherein: the oil extraction channel is obliquely arranged from top to bottom and from inside to outside, and the included angle between the axis of the oil extraction channel and the axis of the central channel is 45 degrees.
6. A bottom-injection production process pipe column is characterized by comprising:
the packer is used for sealing and isolating an oil sleeve annulus above an oil production layer and is provided with an inner central pipe and an outer central pipe, the upper end of the inner central pipe is used for connecting an oil pipe, and a setting assembly is arranged on the outer side of the outer central pipe;
a water injection annulus extending up and down is arranged between the inner central tube and the outer central tube, a water inlet is arranged on the side wall of the outer central tube and is used for communicating the oil sleeve annulus above the packer with the water injection annulus, and the packer is respectively provided with a central tube opening positioned at the lower end of the inner central tube and an annulus opening positioned at the lower end of the water injection annulus;
an injection-production communicating vessel comprising:
the upper end head is hermetically connected to the lower end of the packer;
a lower end head having a lower end opening for discharging the injection water;
the central channel extends up and down, the upper end of the central channel is provided with an opening, the lower end of the central channel is closed, and the upper end opening of the central channel is in sealing fit with the central tube opening of the packer so as to be communicated with the inner central tube;
the water injection channel extends up and down and is positioned at the periphery of the central channel, the water injection channel and the central channel are mutually independent, the upper end of the water injection channel is hermetically connected with the annular opening, and the lower end of the water injection channel is communicated with the lower end opening;
the oil extraction channel extends radially and is provided with an inner opening and an outer opening, the oil extraction channel is mutually independent of the water injection channel, the inner opening of the oil extraction channel is communicated with the central channel in the lateral direction, and the outer opening of the oil extraction channel is arranged on the outer peripheral surface of the injection-production communicating device and is used for communicating an oil extraction layer.
7. The bottom-injection production process string according to claim 6, wherein: the injection-production communicating vessel comprises a sleeve body and a transition pipe body, wherein the upper end is the upper end of the transition pipe body, and the lower end is the lower end of the sleeve body;
the transition pipe body includes: the upper end of the inner pipe body is in sealing fit with an opening of a central pipe of the packer, the upper end of the outer pipe body is in sealing connection with the annular opening, a liquid passing annular space extending up and down is arranged between the inner pipe body and the outer pipe body, and the liquid passing annular space is communicated with the water injection annular space;
the cover body comprises:
the upper end of the central hole is open and is hermetically connected with the lower end of the inner pipe body, the lower end of the central hole is closed, and the inner channel and the central hole of the inner pipe body form the central channel;
the upper end and the lower end of the water injection hole are respectively communicated with the liquid passing annular space and the lower end opening at the lower end of the sleeve body, and the water injection hole and the liquid passing annular space form a water injection channel;
the oil extraction channel is arranged on the sleeve body, the outer opening of the oil extraction channel is arranged on the outer peripheral surface of the sleeve body, and the inner opening of the oil extraction channel is arranged on the hole wall of the central hole of the sleeve body.
8. The bottom-injection production process string according to claim 7, wherein: the quantity of water injection hole is a plurality of, and a plurality of water injection holes are arranged along the peripheral circumference interval of centre bore, the oil recovery passageway is located between the adjacent water injection hole.
9. The bottom-injection production process string according to claim 7 or 8, wherein: a plurality of centralizing blocks are arranged between the inner pipe body and the outer pipe body, the plurality of centralizing blocks are arranged at intervals along the circumferential direction of the outer peripheral surface of the inner pipe body, and gaps between the centralizing blocks are communicated with liquid passing annuluses on the upper side and the lower side of the centralizing blocks.
10. The bottom-injection production process string according to any one of claims 6 to 8, wherein: the oil extraction channel is obliquely arranged from top to bottom and from inside to outside, and the included angle between the axis of the oil extraction channel and the axis of the central channel is 45 degrees.
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| CN201921316696.3U CN211115941U (en) | 2019-08-14 | 2019-08-14 | Injection-production communicating vessel and injection-production-down-production process pipe column |
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| CN201921316696.3U CN211115941U (en) | 2019-08-14 | 2019-08-14 | Injection-production communicating vessel and injection-production-down-production process pipe column |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114109329A (en) * | 2021-12-01 | 2022-03-01 | 东北石油大学 | Injection-production same-well device and injection-production same-well system |
| CN114961674A (en) * | 2022-05-13 | 2022-08-30 | 延长油田股份有限公司南泥湾采油厂 | Horizontal section double-pipe subsection shunt synchronous injection-production technology |
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2019
- 2019-08-14 CN CN201921316696.3U patent/CN211115941U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114109329A (en) * | 2021-12-01 | 2022-03-01 | 东北石油大学 | Injection-production same-well device and injection-production same-well system |
| CN114109329B (en) * | 2021-12-01 | 2022-10-04 | 东北石油大学 | Injection-production same-well device and injection-production same-well system |
| CN114961674A (en) * | 2022-05-13 | 2022-08-30 | 延长油田股份有限公司南泥湾采油厂 | Horizontal section double-pipe subsection shunt synchronous injection-production technology |
| CN114961674B (en) * | 2022-05-13 | 2024-03-22 | 延长油田股份有限公司南泥湾采油厂 | Horizontal section double-pipe subsection shunt synchronous injection and production technology |
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