CN216894843U

CN216894843U - Canning system and two electric submersible pump equipment

Info

Publication number: CN216894843U
Application number: CN202123448499.7U
Authority: CN
Inventors: 鲁升卫
Original assignee: Baisimaiqi Energy Technology Services Shenzhen Co ltd
Current assignee: Baisimaiqi Energy Technology Services Shenzhen Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-07-05
Anticipated expiration: 2031-12-31

Abstract

The utility model discloses a canning system and double-electric submersible pump equipment, which are applied to the technical field of oil well development. The double-electric submersible pump equipment comprises an upper pump assembly and a lower pump assembly, the canning system comprises a tank body and a joint assembly, the tank body is provided with a connecting hole for accommodating the cavity and communicating with the cavity, the joint assembly penetrates through the connecting hole, one end of the joint assembly is located in the cavity and is electrically connected with a first power supply cable, and the other end of the joint assembly is located outside the cavity and is electrically connected with a lower pump cable. In the well completion process, the first power supply cable is electrically connected with the other end of the joint component in the canning system, the lower pump cable leads the cable routing into the canning system through the joint component, the shape requirement and the operation requirement on the lower pump cable are reduced, the probability of damage of the lower pump cable due to small space is reduced, and the well completion efficiency is improved. According to the technical scheme, the joint assembly is arranged on the canning system, so that the technical problem that the well completion efficiency is low due to the fact that a pump cable is easy to damage when a well is lowered is solved.

Description

Canning system and two electric submersible pump equipment

Technical Field

The utility model relates to the technical field of oil well development, in particular to a canning system and double-electric submersible pump equipment.

Background

In the oil exploitation industry, a double-electric submersible pump system (one used and one spare) is widely applied to occasions with high well workover cost, such as deep water oil field development, unmanned platforms and the like. The electric pump needs to supply power from the ground to the underground, and because the gap between the upper closed system and the well completion pipe sleeve is small, the double-pump system has the challenges in the running-in process that a power supply cable of the lower pump needs to pass through the outer side of the upper closed system, the cable is often damaged by extrusion, the well completion failure of the whole well is caused, the time is delayed, and the repeated operation cost is increased. In the related technology, the power supply cable of the lower pump is made into a flat shape, the flat surface needs to be ensured to be uniform in the process of running in, the flat surface cannot be twisted, the operation requirement is high, the well completion efficiency is low, and the cable is easy to damage.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a canning system and double-electric submersible pump equipment, and aims to solve the technical problem that a downhole pump cable is easy to damage to cause low well completion efficiency during downhole.

In order to achieve the above object, the present invention provides a canning system applied to a dual electric submersible pump device, wherein the dual electric submersible pump device comprises an upper pump assembly and a lower pump assembly, and the canning system comprises:

the tank body is provided with a cavity and a connecting hole communicated with the cavity, the upper pump assembly is arranged in the cavity, and the bottom end of the tank body is connected with the lower pump assembly; and

the joint component penetrates through the connecting hole, one end of the joint component is electrically connected with the lower pump cable of the lower pump component, and the other end of the joint component extends into the containing cavity and is electrically connected with a first power supply cable.

Optionally, the tank body is provided with a first cavity and a second cavity which are communicated with each other, the first cavity and the second cavity form the accommodating cavity, the first cavity is located at one side of the lower pump assembly far away from the tank body, the second cavity is located at one side of the lower pump assembly near the tank body, the upper pump assembly is arranged in the first cavity, a step surface is formed at the joint of the first cavity and the second cavity, and the connecting hole penetrates through the step surface.

Optionally, the diameter of the first cavity is larger than that of the second cavity, and the diameter of the second cavity is larger than that of the connecting hole.

Optionally, the tank comprises:

the diameter section is provided with the first cavity; and

the reducing section is arranged at one end, facing the lower pump assembly, of the diameter section and is connected with the lower pump assembly, and the second cavity is formed in the reducing section;

wherein, certainly diameter section orientation the direction of pump package spare down, the external diameter of reducing section reduces gradually to form the reducing surface, the connecting hole runs through in proper order the step face with the reducing surface.

Optionally, a reinforcing part is arranged at the joint of the diameter section and the reducing section, the reinforcing part and the inner wall of the diameter section form the step surface, and the reinforcing part and the inner wall of the reducing section enclose to form the second cavity;

the connecting hole is arranged on the reinforcing part, and the axial direction of the connecting hole is parallel to the axial direction of the second cavity and is arranged at intervals.

Optionally, the joint assembly comprises:

the penetrating piece penetrates through the connecting hole and is connected with the hole wall of the connecting hole in a sealing manner, and a conductor is arranged in the penetrating piece;

the upper connector is connected with one end, extending into the cavity, of the penetrating piece and is arranged at intervals with the upper pump assembly; and

the lower joint is connected with the other end, located outside the cavity, of the penetrating piece, and the upper joint and the lower joint are electrically connected through the electric conductor.

Optionally, the upper pump assembly is provided with an upper pump cable, the canning system further comprises a shelter, the shelter is arranged at the top of the tank body, the shelter is provided with at least one first through hole and at least one second through hole, the at least one first through hole is used for the first power supply cable to pass through, the at least one second through hole is arranged at an interval with the at least one first through hole, and the at least one second through hole is used for the upper pump cable to pass through.

Optionally, the canning system still includes the locating part, the locating part is located the appearance intracavity to detachably connect in go up the pump package spare, the locating part deviates from at least one side of going up the pump package spare is equipped with spacing portion, spacing portion is used for spacingly the joint Assembly stretches into the one end that holds the chamber.

Optionally, the upper pump assembly is provided with an upper pump cable, the limiting member further penetrates through the line passing hole, and the line passing hole is used for limiting the upper pump cable of the upper pump assembly.

The utility model also provides a dual electric submersible pump apparatus, comprising:

a pipe sleeve which is hollow to form a downhole channel;

the canning system according to any one of the preceding claims, wherein the canning system is arranged in the downhole channel;

the upper pump assembly is arranged in the containing cavity of the canning system; and

lower pump assembly, lower pump assembly locates in the passageway of going into the well, and with the connection can be dismantled to the bottom of canning system, lower pump assembly is equipped with down the pump cable, down the pump cable with the connection can be dismantled to the one end of the coupling assembling of canning system.

According to the technical scheme, the joint assembly is arranged on the canning system, so that the technical problem that the well completion efficiency is low due to the fact that a pump cable is easy to damage when a well is lowered is solved. The canning system is applied to two electric submersible pump equipment, and two electric submersible pump equipment include pump assembly and pump assembly down, and the canning system is including a jar body and joint assembly, and a jar body is equipped with the connecting hole that holds the chamber and communicate and hold the chamber, and joint assembly wears to locate in the connecting hole, and joint assembly's one end is located holds the intracavity to be used for being connected with first power supply cable electricity, and joint assembly's the other end is located outside holding the chamber to be connected with pump cable electricity down. In the well completion process, the first power supply cable is electrically connected with the other end of the joint component in the canning system, the lower pump cable leads the cable routing into the canning system through the joint component, the shape requirement and the operation requirement on the lower pump cable are reduced, the probability of damage of the lower pump cable due to small space is reduced, and the well completion efficiency is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic view of the internal structure of an embodiment of the canning system according to the present invention;

FIG. 2 is a schematic internal perspective view of a dual submersible pump apparatus according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of the internal structure of an embodiment of the dual submersible pump apparatus of the present invention;

FIG. 4 is a schematic diagram of a position-limiting member of an embodiment of the dual submersible pump apparatus of the present invention;

FIG. 5 is a schematic view of a shelter structure according to an embodiment of the present invention;

FIG. 6 is a schematic view of another shelter structure according to an embodiment of the present invention.

The reference numbers illustrate:

the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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 invention.

It should be noted that all the directional indications in the embodiments of the present invention are only used to explain the relative position relationship, the motion situation, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.

In the present invention, unless otherwise explicitly stated or limited, the terms "connected", "fixed", and the like are to be understood broadly, for example, "fixed" may be fixedly connected, may be detachably connected, or may be integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B," including either the A or B arrangement, or both A and B satisfied arrangement. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1-6, the present invention is directed to a canning system 100 for use with a dual electric submersible pump apparatus 200.

The upper pump assembly 60 is defined to be disposed at a position above the lower pump assembly 80, and the embodiments are described below with reference to this upper and lower orientation.

Referring specifically to fig. 1 to 3, the dual electric submersible pump apparatus 200 includes an upper pump assembly 60 and a lower pump assembly 80, the canning system 100 includes a tank body 10 and a connector assembly 30, the tank body 10 is provided with a cavity 10A and a connecting hole 10D communicating with the cavity 10A, the upper pump assembly 60 is disposed in the cavity 10A, and the bottom end of the tank body 10 is connected to the lower pump assembly 80. The connector assembly 30 is inserted into the connecting hole 10D, one end of the connector assembly 30 is electrically connected to the lower pump cable 811 of the lower pump assembly 80, and the other end of the connector assembly 30 extends into the cavity 10A and is electrically connected to a first power supply cable 202.

In this embodiment, the canning system 100 is applied to the double-electric submersible pump device 200, the double-electric submersible pump device 200 comprises an upper pump assembly 60 and a lower pump assembly 80, the canning system 100 comprises a tank body 10 and a connector assembly 30, the tank body 10 is provided with a connecting hole 10D which is used for accommodating the cavity 10A and communicated with the cavity 10A, the connector assembly 30 is arranged in the connecting hole 10D in a penetrating manner, one end of the connector assembly 30 is positioned in the cavity 10A and is arranged at an interval with the upper pump assembly 60, one end of the connector assembly 30 which is positioned in the cavity 10A is used for being electrically connected with a first power supply cable 202, and one end of the connector assembly 30 which is far away from the upper pump assembly 60 is arranged outside the cavity 10A and is electrically connected with a lower pump cable 811. In the well completion process, the first power supply cable 202 is electrically connected with one end of the joint component 30, which is deep into the containing cavity, in the canning system 100, the lower pump cable 811 leads the cable routing into the canning system 100 through the joint component 30, the shape requirement and the operation requirement on the lower pump cable 811 are both reduced, meanwhile, the probability of damage of the lower pump cable due to small space is reduced, and the well completion efficiency is improved.

It should be noted that, the well wall is provided with the casing 201 to form the downhole channel 20A, the canning system 100 of the conventional well completion process is formed by connecting a plurality of casings with a certain length, and in order to protect the lower pump cable 811, a cable protection clip is sleeved on the canning system 100, so that the well completion process has a second challenge: because of the small clearance between the inner wall of the downhole passageway 20A and the containment system 100, a collar may not be available for the material selection of the containment system 100, reducing the strength of the joint between the casings of the containment system 100 and limiting the amount of hanging weight below the casing. According to the technical scheme, the connecting hole 10D is formed in the canning system 100, the joint assembly 30 is arranged in the connecting hole 10D, the technical problem that the well completion efficiency is low due to the fact that a pump cable 811 is prone to damage when the well is lowered is solved, meanwhile, a sleeve with a coupling can be used for selecting materials of the canning system 100, the limit of the hanging weight below the sleeve is broken through, and the connecting strength of the canning system 100 is improved.

Optionally, the tank 10 is provided with a first cavity 10B and a second cavity 10C which are communicated with each other, the first cavity 10B and the second cavity 10C are communicated to form a cavity 10A, the first cavity 10B is located on one side of the tank 10 away from the lower pump assembly 80, the second cavity 10C is located on one side of the tank adjacent to the lower pump assembly 80, and the upper pump assembly 60 is located in the first cavity 10B; a step surface 10E is formed at a connection position of the first cavity 10B and the second cavity 10C, and the connection hole 10D penetrates through the step surface 10E.

In this embodiment, the dual submersible pump apparatus 200 includes a first power cable 202 and a second power cable, wherein one end of the first power cable 202 is connected to the above-ground pump power supply device, and the other end thereof extends into the downhole channel 20A and into the canning system 100, and is electrically connected to one end of the connector assembly 30 in the canning system 100, so as to supply power to the lower pump assembly 80. One end of the second power supply cable is connected to the above-ground pump power supply device on the well, and the other end extends into the downhole channel 20A and is electrically connected to one end of the upper pump cable 611, so as to supply power to the upper pump assembly 60. The tank body 10 is provided with a first cavity 10B and a second cavity 10C which are arranged up and down and communicated with each other, and a cavity 10A is formed; the upper pump assembly 60 is disposed in the first cavity 10B, and one end of the connecting assembly extending into the cavity 10A is also disposed in the first cavity 10B and is used for connecting the first power supply cable 202. Step face 10E is formed at the junction of first cavity 10B and second cavity 10C, connecting hole 10D runs through the chamber wall of second cavity 10C, and run through step face 10E setting simultaneously, coupling component 30 wears to locate connecting hole 10D, be used for connecting first power supply cable 202 and pump cable 811 down, make the line of pump cable 811 down be located canning system 100, can guarantee that whole pipe cluster goes into down smoothly, the cable does not receive potential extrusion damage, reduce the extrusion damage that the cable caused because of space limitation, promote well completion efficiency.

It can be understood that, as the cable runs through the upper canning system 100, the space in the closed system in the upper canning system 100 is occupied, the flow rate of the well fluid flowing through the upper motor is increased objectively, and the heat dissipation of the motor is facilitated.

Alternatively, the diameter of the first cavity 10B is larger than that of the second cavity 10C, and the diameter of the second cavity 10C is larger than that of the connection hole 10D.

In this embodiment, the first cavity 10B and the second cavity 10C are distributed in the vertical direction, the upper pump cable 611 is disposed in the first cavity 10B, and the first power supply cable 202 of the lower pump needs to be connected, so that the diameter of the first cavity 10B is greater than that of the second cavity 10C, the first cavity 10B is communicated with the lower pump assembly 80, wherein the diameter of the second cavity 10C is less than that of the first cavity 10B, and the outer diameter of the structure of the canning system 100 forming the second cavity 10C is approximately similar to that of the joint of the lower pump assembly 80, which is convenient for connection, and meanwhile, reduces the weight and the space occupation. The connecting hole 10D is formed in the canning system 100, in order to guarantee the strength of the canning system 100, the diameter of the connecting hole 10D is far smaller than the diameters of the first cavity 10B and the second cavity 10C, the diameter of the connecting hole 10D can be used for the connector assembly 30 to penetrate through, the strength of the canning system 100 is improved, routing of the lower pump cable 811 is changed, and the lower pump cable 811 is protected from being extruded and abraded.

It will be appreciated that since the lower pump cable 811 is connected to the connector assembly 30 and the uphole first power cable 202 is connected within the canister system 100, the shape of the lower pump cable 811 is not limited to a flat shape, and a round cable may be selected, improving selectivity.

Optionally, the tank 10 includes a diameter section 11 and a diameter-changing section 12, and the diameter section 11 is provided with a first cavity 10B; the reducing section 12 is arranged at one end, facing the lower pump assembly 80, of the diameter section 11 and is connected with the lower pump assembly 80, and the second cavity 10C is formed in the reducing section 12; wherein, from the direction of diameter section 11 towards pump assembly 80 down, the external diameter of reducing section 12 reduces gradually to form the reducing surface, connecting hole 10D runs through step face 10E and reducing surface in proper order.

In the present embodiment, the tank 10 includes a diameter section 11 and a diameter-changing section 12, the diameter section 11 and the diameter-changing section 12 are distributed up and down, and the diameter section 11 and the diameter-changing section 12 are an integrally formed structural member. First cavity 10B is seted up to diameter section 11, and second cavity 10C is seted up to reducing section 12, and the one end that reducing section 12 kept away from diameter section 11 is connected with pump assembly 80 down for second cavity 10C is connected with pump assembly 80 down, and fluid gets into in second cavity 10C and the second cavity 10C when being convenient for pump. Wherein, the external diameter of diameter section 11 is greater than or equal to the biggest external diameter of reducing section 12, and reducing section 12 is formed with the reducing surface, and connecting hole 10D runs through reducing surface and step face 10E setting respectively, and the external diameter top-down of reducing section 12 reduces gradually for joint Assembly 30 sets up and is great with the inner wall interval of lower well passageway 20A, promotes the protection to pump cable 811 down, does not influence down pump assembly 80 and the connection of the pump assembly 80 down with the most lower extreme of reducing portion simultaneously. The provision of the tapered section 12 increases the compatibility of the connection of the tank 10 to the lower pump assembly 80 while reducing the weight of the tank 10.

It will be appreciated that the lowermost end of the variable diameter portion has a sizing section 14 of one end length, the sizing section 14 matching the outer diameter of the connection to the lower pump assembly 80.

Optionally, a reinforcing part 13 is arranged at the connection part of the diameter section 11 and the reducing section 12, the reinforcing part 13 and the inner wall of the diameter section 11 form a step surface 10E, and the step surface and the inner wall of the reducing section 12 enclose to form a second cavity 10C; the connection hole 10D is opened in the reinforcement portion 13, and the axial direction of the connection hole 10D is parallel to the axial direction of the second cavity 10C and is provided at an interval.

In this embodiment, diameter section 11 and reducer section 12's junction is equipped with rib 13, rib 13 locates in holding chamber 10A, and form step face 10E with diameter section 11's inner wall, enclose the intracavity wall that closes formation second cavity 10C with reducer section 12's inner wall, rib 13's setting makes reducer section 12 and diameter section 11's junction stability reinforcing, set up connecting hole 10D on rib 13 simultaneously, the intensity influence to jar body 10 reduces greatly, break through the technical barrier that current canning system 100 can't directly be at its lateral wall or diapire trompil threading. The axial direction of connecting hole 10D and the axial direction of second cavity 10C are parallel and the interval sets up, under the condition of guaranteeing jar body 10 intensity, increase the axial length of connecting hole 10D as far as, when making wear to establish joint Assembly 30 in connecting hole 10D, can promote pump cable 811 and first power supply cable 202's connection reliability down, pump cable 811 under the protection, promote the smoothness of going into the well, and the corresponding consumption that reduces manpower and man-hour, promote well completion efficiency.

It can be understood that the diameter section 11 is formed by connecting a plurality of equal-diameter sleeves in an actual well completion process, the reducing section 12 and the nearest diameter section 11 connected with the reducing section 12 are integrally formed structural members, wherein the reinforcing part 13, the diameter section 11 and the reducing section 12 are also integrally formed structural members, and a cavity 10A and a connecting hole 10D communicating the cavity 10A are formed during casting forming, so that the number of die opening times is reduced, and the assembly of the tank body 10 is facilitated.

Optionally, the connector assembly 30 includes a penetrating member 33, an upper connector 31 and a lower connector 32, the penetrating member 33 is disposed in the connecting hole 10D and is connected with the hole wall of the connecting hole 10D in a sealing manner, and the penetrating member 33 is disposed inside an electric conductor. The upper connector 31 is connected to one end of the penetrating member 33 extending into the cavity 10A and is spaced apart from the upper pump assembly 60, the lower connector 32 is connected to the other end of the penetrating member 33 located outside the cavity 10A, and the upper connector 31 and the lower connector 32 are electrically connected through an electric conductor.

In this embodiment, the reinforcing part 13 is seted up to connecting hole 10D to run through the reducing surface setting of step face 10E and reducing portion, wear to cross piece 33 and wear to locate in connecting hole 10D and with the pore wall sealing connection of connecting hole 10D, avoid fluid to pass through connecting hole 10D and get into first cavity 10B, promote the assembly stability of joint Assembly 30 and jar body 10, effectively carry out the connection bridge of cable routing.

It can be understood that the outer wall of the penetrating member 33 is provided with a groove, and the joint assembly 30 further includes a sealing member 34, wherein the sealing member 34 is sleeved on the outer wall of the penetrating member 33 and is limited in the groove. The sealing member 34 may be a deformable sealing ring or a water-swellable material, and the sealing member 34 is in interference fit with the hole wall of the connection hole 10D.

It can be understood that the hole wall of the connection hole 10D may be correspondingly provided with a limiting groove, and the sealing element 34 is respectively limited in the groove of the penetrating element 33 and the limiting groove of the hole wall of the connection hole 10D, so as to reduce the gap between the penetrating element 33 and the hole wall of the connection hole 10D, and improve the setting stability and the limiting reliability of the penetrating element 33.

It can be understood that the sealing elements 34 can be arranged in a plurality of numbers, the sealing elements 34 are arranged at intervals, a plurality of grooves are correspondingly arranged on the penetrating element 33, and a plurality of limiting grooves are correspondingly arranged on the hole wall of the connecting hole 10D, so that the sealing reliability is improved, and the stability of the penetrating element 33 is enhanced.

Referring to fig. 5 to 6, optionally, the upper pump assembly 60 is provided with an upper pump cable 611, the canning system 100 further includes a shelter 90, the shelter 90 is provided on the top of the tank 10, the shelter 90 is provided with at least one first through hole 90A and at least one second through hole 90B, and the at least one first through hole 90A is used for the first power supply cable 202 to pass through; at least one second through hole 90B is spaced apart from the at least one first through hole 90A, and the at least one second through hole 90B is used for the upper pump cable 611 to pass through.

In this embodiment, the upper pump assembly 60 is provided with an upper pump cable 611, and the canister system 100 further includes a blanking cover 90 for the canister system 100. Because the strength of the shelter 90 is related to the sealing performance, the first through hole 90A and the second through hole 90B are respectively disposed on two opposite sides of the shelter 90 and are respectively used for the first power supply cable 202 and the upper pump cable 611 to pass through, so that the strength of the shelter 90 is improved, and the connection stability of the upper pump cable 611 and the second power connection cable, and the connection stability of the lower pump cable 811 and the first power supply cable 202 are improved.

It can be understood that three first through holes 90A and three second through holes 90B may be formed in the shelter 90, and the three first through holes 90A are used for the three strands of the first power supply cable 202 to pass through and perform the sealing process; the three second perforations 90B are used for the three strands of the upper pump cable to pass through and carry out sealing treatment, the diameter of the perforations is reduced, the strength of the sealing shelter 90 is enhanced, and the sealing performance of the canning system 100 is improved.

It is understood that connectors corresponding to the first power supply cable 202 and the upper pump cable may be provided on the shelter 90, and the first power supply cable 202 or the upper pump cable may be detachably connected to the connectors. The connector is sealed and inserted through the shelter 90, and two ends of the connector are respectively and correspondingly connected with the upper joint 31 and the first power supply cable 202, or two ends of the connector corresponding to the upper pump cable 611 are correspondingly connected with the upper pump cable 611 and the second power connection cable, so that the length of the cable can be conveniently adjusted.

It can be understood that the middle of the shelter 90 is provided with a third through hole 90C passing through the oil extraction pipe, and the first through hole 90A and the second through hole 90B are arranged around the third through hole 90C at intervals to maintain the structural strength of the shelter 90.

Referring to fig. 4, optionally, the canning system 100 further includes a limiting member 50, the limiting member 50 is located in the cavity 10A and detachably connected to the upper pump assembly 60, at least one side of the limiting member 50 away from the upper pump assembly 60 is provided with a limiting portion 51, and the upper joint 31 is limited in the limiting portion 51.

In this embodiment, the joint assembly 30 includes a penetrating member 33, an upper joint 31 and a lower joint 32, the upper joint 31 is disposed at one end of the penetrating member 33 extending into the first cavity 10B, the canning system 100 further includes a limiting member 50, the limiting member 50 is sleeved on the upper pump assembly 60 and detachably connected to the upper pump assembly 60, the limiting member 50 includes a limiting portion 51 and a body 52, the limiting portion 51 is disposed at one side of the body 52 facing the inner wall of the diameter section 11 and is used for limiting the upper joint 31, so that the upper joint 31 is limited in the cavity 10A and cannot move freely, winding with the upper pump cable 611 is avoided, safety guarantee is improved, and meanwhile, the possibility that the upper joint 31 is damaged due to oil liquid flushing in the movement of the upper joint 31 is reduced, and maintenance times are reduced.

Optionally, the upper pump assembly 60 is provided with an upper pump cable 611, the limiting member 50 further has a through hole 50A formed therethrough, and the through hole 50A is used for limiting the upper pump cable 611 of the upper pump assembly 60.

In this embodiment, the upper pump assembly 60 is provided with the upper pump cables 611, and the upper pump cables 611 and the lower pump cables 811 are arranged in a staggered manner, so that the occupancy rate of the space on one side in the cavity 10A is reduced, and the uniformity of the space occupancy rate in the cavity 10A is improved. The wire through hole 50A is further formed in one side, away from the limiting part 51, of the body 52 of the limiting part 50 in a penetrating manner, the wire through hole 50A and the limiting part 51 are also arranged on the limiting part 50 at intervals, preferably arranged on the opposite side, so that the possibility that the upper pump cable 611 and the upper joint 31 or the first power supply cable 202 are wound is reduced, and the wiring reliability and the oil pumping convenience are improved.

It should be noted that the completion process also presents three challenges: in order to protect the pump-down cable 811, a cable protection clip is arranged on the non-coupling sleeve, and the cable protection clip is easy to fall off due to space limitation and sleeve strength limitation, or the cable protection clip is damaged due to friction with the inner wall of the well-descending channel 20A; the fourth challenge is that if the cable protection card is not arranged, the cut groove influences the strength of the sleeve if the cut groove is used for fixing the cable on the sleeve. The two mentioned casing sections are the diameter section 11 casing forming the canning system 100, spaced from the inner wall of the casing 201 forming the downhole channel 20A, and belong to different diameter structures. By adopting the canning system 100 of the technical scheme of the utility model, a structure that a cable protection card is arranged outside the tank body 10 of the canning system 100 can be omitted, no groove is required to be formed outside the tank body 10, the strength of the tank body 10 is kept, the tank body with the reinforcing part 13 is provided with the connecting hole 10D, and the connector assembly 30 is adopted to lead the wiring of the lower pump cable 811 into the canning system, so that the two challenges are solved. Further, a limiting member 50 is arranged inside the canning system 100 to limit the upper pump cable 611 and the upper joint 31 respectively, so as to ensure that the internal wiring of the canning system is orderly, improve the well completion efficiency and maintain the oil pumping stability.

The utility model also provides a double-electric submersible pump device 200, which is applied to the technical field of oil well development, wherein the double-electric submersible pump device 200 comprises a pipe sleeve 201, the canning system 100, the upper pump assembly 60 and the lower pump assembly 80, the canning system 100 adopts the technical scheme of all the embodiments, and the specific structure of the canning system 100 refers to the embodiments. Wherein, the pipe sleeve 201 is hollow to form a well descending channel 20A; the canning system 100 is disposed in the downhole passageway 20A; the upper pump assembly 60 is disposed within the cavity of the canister system 100; the lower pump assembly 80 is disposed in the downhole passageway 20A and is provided with a lower pump cable 811; pump cable 811 can dismantle with the one end of canned system 100's joint Assembly 30 and keep away from last pump assembly 60 and be connected, through set up connecting hole 10D on canned system 100, sets up joint Assembly 30 in the connecting hole 10D, pump cable 811 fragile leads to the technical problem of well completion inefficiency in the time of solving going down the well, makes canned system 100's material selection go up the sleeve pipe that can use the area coupling simultaneously, breaks through the weight of hanging restriction below the sleeve pipe, promotes canned system 100's joint strength.

It will be appreciated that the upper pump assembly 60 includes an upper pump motor 61, an upper protector 62, and an upper reversing valve 63, and that the upper pump motor 61, the upper protector 62, and the upper reversing valve 63 are disposed in series and in communication with one another in a direction from within the canister system 100 toward the wellhead. The limiting member may be sleeved between the upper pump motor 61 and the upper protector 62 to fix the upper connector 31, and the upper pump cable 611 is electrically connected to the upper pump motor 61. The lower pump assembly 80 comprises a lower pump motor 81, a lower protector 82 and a lower reversing valve 83, and the lower reversing valve 83, the lower protector 82 and the lower pump motor 81 are sequentially arranged and communicated with each other in the direction deviating from the wellhead of the canning system 100. One end of the lower pump cable 811 is electrically connected to the lower pump motor 81, and the other end is electrically connected to the lower connector 32.

It is understood that the lower pump assembly 80 may or may not be provided with a seal pot around its exterior, and the present invention is not particularly limited.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or any other related technical fields, which are directly or indirectly applied to the present invention, are included in the scope of the present invention.

Claims

1. A canning system applied to a dual electric submersible pump device, wherein the dual electric submersible pump device comprises an upper pump assembly and a lower pump assembly, the canning system comprising:

2. The canning system according to claim 1, wherein the can body is provided with a first cavity and a second cavity which are communicated with each other, the first cavity and the second cavity form the containing cavity, the first cavity is positioned on one side of the can body away from the lower pump assembly, the second cavity is positioned on one side of the can body close to the lower pump assembly, the upper pump assembly is arranged in the first cavity, a step surface is formed at the joint of the first cavity and the second cavity, and the connecting hole penetrates through the step surface.

3. The canning system according to claim 2, wherein the diameter of said first cavity is greater than the diameter of said second cavity, and the diameter of said second cavity is greater than the diameter of said connecting aperture.

4. The can system of claim 2, wherein the can comprises:

the diameter section is provided with the first cavity; and

wherein, certainly the diameter section orientation the direction of pump assembly down, the external diameter of reducing section reduces gradually to form the reducing surface, the connecting hole runs through in proper order the step face with the reducing surface.

5. The can system of claim 4, wherein the junction of the diameter section and the reducer section is provided with a reinforcement, the reinforcement forms the step surface with the inner wall of the diameter section, and the reinforcement and the inner wall of the reducer section enclose to form the second cavity;

6. The canning system according to any of claims 1 to 5, wherein said joint assembly comprises:

7. The canning system according to any one of claims 1-5, wherein said upper pump assembly is provided with an upper pump cable, said canning system further comprising a shelter, said shelter being provided on top of said tank, said shelter being provided with at least one first perforation and at least one second perforation, at least one first perforation being provided for said first power cable to pass through, at least one second perforation being provided spaced apart from at least one first perforation, at least one second perforation being provided for said upper pump cable to pass through.

8. The canister system according to any of claims 1-5, further comprising a stopper located in the cavity and detachably connected to the upper pump assembly, wherein at least one side of the stopper facing away from the upper pump assembly is provided with a stopper for limiting an end of the joint assembly extending into the cavity.

9. The canister system according to claim 8, wherein the upper pump assembly is provided with an upper pump cable, and wherein the retainer is further provided with a wire hole for retaining the upper pump cable of the upper pump assembly.

10. A dual electric submersible pump apparatus, comprising:

a pipe sleeve which is hollow to form a downhole channel;

the canister system of any one of claims 1-9, provided in the downhole passageway;

lower pump assembly, lower pump assembly locates in the passageway of going into the well, and with the connection can be dismantled to the bottom of canning system, lower pump assembly is equipped with down the pump cable, down the pump cable with the connection can be dismantled to the one end of the connector assembly of canning system.