Oil-geothermal energy co-production system

Abstract

The present application discloses an oil-geothermal energy co-production system, comprising an oil-geothermal energy production and transportation mechanism and an injection and transportation mechanism. The oil-geothermal energy production and transportation mechanism comprises a negative pressure pipeline, an oil extraction portion is formed on the negative pressure pipeline, and the negative pressure pipeline is used to form negative pressure internally so as to extract oil from the oil extraction portion; and the injection and transportation mechanism comprises a plurality of flow-delivering pipelines, and the plurality of flow-delivering pipelines are evenly arranged around the peripheral side of the negative pressure pipeline and are spaced apart from the negative pressure pipeline, wherein each of the flow-delivering pipelines is provided with jetting portions, which are used for injecting supercritical carbon dioxide into petroleum. In the technical solution of the present application, by providing the jetting portions on each of the flow-delivering pipelines and evenly arranging the plurality of flow-delivering pipelines around the peripheral side of the negative pressure pipeline, supercritical carbon dioxide around the negative pressure pipeline can be distributed in a concentrated mode, thereby enhancing the fluidity of petroleum around the negative pressure pipeline, and thus accelerating the efficiency of petroleum extraction by the negative pressure pipeline.

Description

Oil and heat simultaneous production system

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on January 16, 2024, with application number 202410061020.3 and application name “A Oil-Heat Simultaneous Production System”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of petroleum technology, and in particular to an oil-heat simultaneous production system. Background Art

[0003] Supercritical carbon dioxide technology is an emerging energy storage and conversion technology that has received widespread attention and research in many fields, including thermal energy storage and oil-heat production. It mainly compresses carbon dioxide to a high-temperature and high-pressure state to make it have supercritical properties, and then uses it as a working fluid to achieve thermal energy storage or oil-heat production. Supercritical carbon dioxide is injected into the oil field to increase the fluidity of the oil and push it to the wellhead; in the related technology, after supercritical carbon dioxide is injected into the water-bearing oil field, due to the uneven distribution of pores in the oil field, supercritical carbon dioxide will flow and overflow, and the oil production efficiency is low. At the same time, in oil-heat production, heat is easily radiated and diffused during transmission, resulting in a certain amount of waste. Therefore, it is necessary to provide an oil-heat production system based on supercritical carbon dioxide to solve the problems raised in the above background technology. Summary of the Invention

[0004] The main purpose of this application is to provide an oil and heat simultaneous extraction system, which aims to provide a device that improves the efficiency of oil extraction and prevents heat from being wasted during the oil transmission process.

[0005] To achieve the above objectives, this application proposes an oil and heat simultaneous production system, comprising:

[0006] The oil heat extraction and delivery mechanism includes a negative pressure pipeline, wherein an oil extraction portion is formed on the negative pressure pipeline, and a negative pressure is formed in the negative pressure pipeline to extract oil from the oil extraction portion; and

[0007] The injection mechanism includes a plurality of flow delivery pipes, wherein the plurality of flow delivery pipes are evenly arranged along the circumference of the negative pressure pipe and are spaced apart from the negative pressure pipe;

[0008] Wherein, each of the flow delivery pipes is provided with a jet portion for injecting supercritical carbon dioxide into the oil.

[0009] Optionally, the negative pressure pipeline includes:

[0010] A plurality of tube sections are arranged along the length direction thereof; and

[0011] A plurality of elastic sleeves, wherein the elastic sleeves are sleeved onto the ends of two adjacent joint tubes to connect the two adjacent joint tubes;

[0012] Wherein, each of the joint pipes is provided with the oil production part.

[0013] Optionally, the negative pressure pipeline has an oil inlet end;

[0014] The negative pressure pipeline also includes:

[0015] A plurality of pumping end pieces are respectively sleeved on the plurality of the joint pipes, each of the pumping end pieces is located at one end of the joint pipe close to the oil inlet end, and the pumping end piece is provided with a plurality of inclined openings connected to the joint pipe for underground crude oil extraction and transportation; and

[0016] A plurality of horizontal well gaps are provided corresponding to the inclined openings to improve the fluidity of underground crude oil.

[0017] Optionally, the negative pressure pipeline further includes:

[0018] The positioning shaft seat is sleeved on the plurality of the joint tubes. An elastic member is provided between the inner side wall of the positioning shaft seat and the outer side wall of the joint tube to position the center of the joint tube on the positioning shaft seat.

[0019] Optionally, the negative pressure pipe further includes a pipe vibrator sleeved on the negative pressure pipe to vibrate the negative pressure pipe.

[0020] Optionally, the pipe vibrator includes:

[0021] The outer shaft frame has a plurality of air cavities radially distributed on its inner circumference, and sealing plugs are slidably arranged in each of the air cavities; the air cavities are also provided with an air inlet and an air outlet, and each of the air inlet and air outlet is independently supplied with air;

[0022] A guide sleeve is arranged in the outer shaft frame, and the joint tube is slidably arranged in the guide sleeve; and

[0023] A connecting piece has one end connected to the sealing plug and the other end connected to the guide sleeve.

[0024] Optionally, an internal heat extraction pipe is further provided in the joint pipe, and the internal heat extraction pipe is provided corresponding to the oil extraction part to absorb the heat of the underground crude oil extracted into the joint pipe.

[0025] Optionally, the internal heat collection pipe includes:

[0026] Multiple outer tubes are sequentially spliced ​​and distributed along the extension direction; the outer side wall of each outer tube is provided with multiple outer protrusions;

[0027] A plurality of inner partition plates are fixed in the outer tube body, wherein the inner partition plates divide the outer tube body into a first water supply chamber, a second water supply chamber and a return water chamber; and

[0028] A plurality of flow retarders are used to control the water flow velocity inside the outer tube body; wherein each of the flow retarders is correspondingly arranged in the first water supply cavity and / or the second water supply cavity.

[0029] Optionally, the flow retarder is further provided with a one-way flow channel, which is arranged along the extension direction of the joint pipe and is connected to the return water cavity to collect information on underground thermal distribution.

[0030] Optionally, a flow controller is further provided inside the inner heat extraction pipe, and the flow controller includes: a water inlet port and a water outlet port;

[0031] The inner tube extends along the direction of water flow and is slidably installed, and a spring is provided on the peripheral side near the water outlet; the diversion port is provided at the side end of the flow controller relative to the inner tube;

[0032] A choke shaft is provided on the side of the inner tube close to the water inlet port to partially block the inner tube; and a cut-off ring is sleeved on the side of the inner tube close to the water inlet port. A shaft ring is also provided in the flow controller to cooperate with the cut-off ring to control the flow resistance of the water inside the flow controller; wherein the water outlet direction of the inner tube corresponds to the first water delivery chamber, and the water outlet direction of the diversion port corresponds to the second water delivery chamber.

[0033] In the technical solution of the present application, the jet portion is arranged on the flow delivery pipe, and multiple flow delivery pipes are evenly arranged along the circumference of the negative pressure pipe, so that the supercritical carbon dioxide near the negative pressure pipe can be concentratedly distributed, thereby improving the fluidity of the oil near the negative pressure pipe, and further accelerating the efficiency of oil extraction by the negative pressure pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] FIG1 is a schematic diagram of the internal structure of an oil-heat simultaneous production system according to an embodiment of the present application;

[0035] FIG2 is a partial enlarged schematic diagram of the oil heat production and delivery mechanism and the injection and delivery mechanism in FIG1 ;

[0036] FIG3 is a schematic diagram of a partial internal cross-section structure of the negative pressure pipe in FIG2 ;

[0037] FIG4 is an enlarged schematic diagram of a partial internal section at point A in FIG3 ;

[0038] FIG5 is a schematic diagram of a partial internal cross-section of the pipe vibrator in FIG4 ;

[0039] FIG6 is a schematic diagram of a partial internal cross-section of the inner heat extraction pipe in FIG4 ;

[0040] FIG7 is a cross-sectional view of the inner heat extraction pipe in FIG4 ;

[0041] FIG8 is an enlarged schematic diagram of a partial internal section at point B in FIG6 .

[0042] Description of Figure Numbers:

[0043] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0045] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0046] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0047] Supercritical carbon dioxide technology is an emerging energy storage and conversion technology that has received widespread attention and research in many fields, including thermal energy storage and oil-heat production. It mainly compresses carbon dioxide to a high-temperature and high-pressure state to make it have supercritical properties, and then uses it as a working fluid to achieve thermal energy storage or oil-heat production. Supercritical carbon dioxide is injected into the oil field to increase the fluidity of the oil and push it to the wellhead; in the related technology, after supercritical carbon dioxide is injected into the water-bearing oil field, due to the uneven distribution of pores in the oil field, supercritical carbon dioxide will flow and overflow, and the oil production efficiency is low. At the same time, in oil-heat production, heat is easily radiated and diffused during transmission, resulting in a certain amount of waste. Therefore, it is necessary to provide an oil-heat production system based on supercritical carbon dioxide to solve the problems raised in the above background technology.

[0048] To solve the above problems, the present application proposes an oil-heat simultaneous production system, which aims to provide a device that improves the efficiency of oil extraction and prevents heat from being wasted during oil transmission. Figures 1 to 8 are structural schematic diagrams of an embodiment of an oil-heat simultaneous production system provided by the present application.

[0049] Please refer to Figures 1 and 2. The present application proposes an oil and heat simultaneous production system 1000, including an oil and heat production and delivery mechanism 1 and an injection mechanism 9; the oil and heat production and delivery mechanism 1 includes a negative pressure pipeline 2, on which an oil production section is formed, and the negative pressure pipeline 2 is used to generate a negative pressure inside the negative pressure pipeline 2 to produce oil from the oil production section; the injection mechanism 9 includes a plurality of flow pipelines 91, which are evenly arranged along the circumference of the negative pressure pipeline 2 and are spaced apart from the negative pressure pipeline 2; wherein, each flow pipeline 91 is provided with a jet portion 911 for injecting supercritical carbon dioxide into the oil.

[0050] In the technical solution of the present application, a jet portion 911 is provided on the flow delivery pipe 91, and multiple flow delivery pipes 91 are evenly arranged along the circumference of the negative pressure pipe 2, so that the supercritical carbon dioxide near the negative pressure pipe 2 can be concentratedly distributed, thereby improving the fluidity of the oil near the negative pressure pipe 2, and further accelerating the efficiency of oil extraction by the negative pressure pipe 2.

[0051] Further, please refer to Figures 3 and 4. The negative pressure pipeline 2 includes a plurality of joint pipes 3 and a plurality of elastic sleeves 4. The plurality of joint pipes 3 are arranged along the length direction. The plurality of elastic sleeves 4 are sleeved onto the ends of two adjacent joint pipes 3 to connect the two adjacent joint pipes 3. Each joint pipe 3 is provided with an oil extraction section. It is understandable that the negative pressure pipeline 2 can adopt an integrated structure or a split structure. Due to the changeable and diverse types of extraction environments, the adaptability of the negative pressure pipeline 2 with an integrated structure is insufficient compared to the negative pressure pipeline 2 with a split structure. Therefore, in the present technical solution, the negative pressure pipeline 2 adopts a split structure. The negative pressure pipeline 2 includes a plurality of joint pipes 3 and a plurality of elastic sleeves 4. The plurality of joint pipes 3 are arranged along the length direction. The plurality of elastic sleeves 4 are sleeved onto the ends of two adjacent joint pipes 3 to connect the two adjacent joint pipes 3, thereby forming a negative pressure channel. The plurality of joint pipes 3 are provided with an oil extraction section to accelerate the efficiency of oil extraction by the negative pressure pipeline 2.

[0052] Further, please refer to Figures 2 and 4. The negative pressure pipeline 2 has an oil inlet end; the negative pressure pipeline 2 also includes multiple pumping end pieces 5 and multiple horizontal well gaps 6; the multiple pumping end pieces 5 are respectively correspondingly mounted on multiple joint pipes 3, and each pumping end piece 5 is at one end of the joint pipe 3 close to the oil inlet end. The pumping end piece 5 is penetrated by a plurality of inclined openings 51 connected to the joint pipe 3 for underground crude oil extraction and transportation; multiple horizontal well gaps 6 are arranged corresponding to each inclined opening 51 to improve the fluidity of underground crude oil. It is understandable that in order to ensure the reliability of oil extraction, the joint pipe 3 cannot directly pump oil, and a pumping end piece 5 needs to be provided to pump oil while protecting the joint pipe 3; further, a ramp 51 is provided on the pumping end piece 5 to communicate with the joint pipe 3, and oil enters the joint pipe 3 from the ramp 51 and is extracted by the negative pressure pipeline 2; in addition, a horizontal well gap 6 is provided outside each ramp opening 51, and the horizontal well gap 6 is used to improve the fluidity of underground oil, further accelerating the extraction speed of the negative pressure pipeline 2.

[0053] Further, please refer to Figure 4, the negative pressure pipe 2 also includes a positioning shaft seat 7, which is sleeved on multiple node tubes 3, and an elastic member 71 is provided between the inner wall of the positioning shaft seat 7 and the outer wall of the node tube 3 to position the center of the node tube 3 on the positioning shaft seat 7. It is understandable that due to the effect of negative pressure, the negative pressure pipeline 2 will shake violently or twist and deform during the process of extracting oil, which will greatly affect the stability of the oil heat extraction mechanism 1 in extracting oil. Therefore, in order to avoid the negative pressure pipeline 2 from twisting violently and even deforming when pumping oil, the negative pressure pipeline 2 also includes a positioning shaft seat 7. There are multiple positioning shaft seats 7, which correspond to each joint pipe 3, so that the positioning shaft seat 7 is sleeved on multiple joint pipes 3. An elastic member 71 is provided between the inner wall of the positioning shaft seat 7 and the outer wall of the joint pipe 3. When the joint pipe 3 twists in a certain direction in the positioning shaft seat 7, the elastic member 71 in the other direction limits the twisting deformation of the joint pipe 3 based on the positioning shaft seat 7, thereby positioning the center of the joint pipe 3 on the positioning shaft seat 7.

[0054] Further, please refer to Figures 4 and 5. The negative pressure pipeline 2 also includes a pipe vibrator 8 sleeved on the negative pressure pipeline 2 to vibrate the negative pressure pipeline 2. It is understandable that when oil is initially mined, it contains a lot of impurities, and the liquid nature of oil is too viscous. During the process of oil extraction by the negative pressure pipeline 2, oil may be blocked in the joint pipe 3, causing the pumping speed of the oil heat extraction mechanism 1 to slow down or stop. Therefore, it is necessary to sleeve at least one pipe vibrator 8 on the negative pressure pipeline 2 to vibrate and drive the joint pipe 3, thereby achieving auxiliary flow promotion of the joint pipe 3 in the water-containing oil field; it is understandable that multiple pipe vibrators 8 can be set, and for the protection of the pipe vibrator 8, the pipe vibrator 8 is set in the alignment sleeve, that is, there is one at both ends of each joint pipe 3. Setting; at the same time, the vibrators 8 mounted on both ends of the joint pipe 3 can drive the joint pipe 3 to vibrate by one of them, or drive the two together, and can also accurately locate where the blockage occurs. The vibration of the vibrator 8 at the corresponding position can specifically promote the flow of water or oil in a specific area, thereby improving the efficiency of fluid movement; and it is effective in solving the sediment or blockage problems in specific areas, is more flexible, and can better cope with different geological conditions and challenges in the well; it can better overcome the fluid flow problems in water-containing oil fields, improve oil production efficiency, reduce production costs, and reduce environmental impact.

[0055] Further, please refer to Figure 5, the pipe vibrator 8 includes an outer shaft frame 81, a guide sleeve 82 and a connecting piece 83; a plurality of air cavities 811 are radially distributed along the inner circumference of the outer shaft frame 81, and a sealing plug 8111 is slidably arranged in the air cavity 811; the air cavity 811 is also provided with an air inlet 8112 and an air outlet 8113, and each air inlet 8112 and air outlet 8113 is independently supplied with exhaust; the guide sleeve 82 is arranged in the outer shaft frame 81, and the joint pipe 3 is slidably arranged in the guide sleeve 82; one end of the connecting piece 83 is connected to the sealing plug 8111, and the other end is connected to the guide sleeve 82. It can be understood that in order to realize the vibration drive of the pipe vibrator 8 on the joint pipe 3 and increase the fluidity of the oil in the joint pipe 3, the specific configuration of the pipe vibrator 8 includes an outer shaft frame 81, a guide sleeve 82 and a connecting piece 83; the pipe vibrator 8 is sleeved on the joint pipe 3 by the guide sleeve 82, the outer shaft frame 81 is arranged on the outside of the guide sleeve 82, and a plurality of air cavities 811 are radially distributed on the inner circumference of the outer shaft frame 81, and a sealing plug 8111 is slidably arranged in each of the air cavities 811; the air cavity 811 is also provided with an air inlet 8112 and an air outlet 8113, each of the air inlet 8112 and the air outlet 8113 is independently supplied with air, and the guide sleeve 82 is connected to the outer shaft frame 81. A connecting piece 83 is provided between the shaft frames 81 for connection; wherein, the positioning shaft seat 7 is buried in the stratum, and the air pressure of each air cavity 811 in the outer shaft frame 81 is adjusted, so that the guide sleeve 82 can be driven accordingly, or swing back and forth or turn in a circular motion; when the guide sleeve 82 swings back and forth, one of the air cavities 811 performs continuous maximum gas pumping and delivery, while the air cavity 811 at the opposite end performs maximum gas pumping and delivery synchronously and oppositely, and the remaining air cavities 811 assist in air pressure regulation; when the guide sleeve 82 turns in a circular motion, the air pressure in each air cavity 811 is adjusted high and low in succession.

[0056] In addition, referring to Figures 4 and 6, an internal heat extraction pipe 31 is also sheathed within the joint pipe 3. The internal heat extraction pipe 31 is arranged corresponding to the oil extraction section to absorb the heat of the underground crude oil extracted into the joint pipe 3. It is understandable that the heat distribution of underground oil is uneven when it is extracted. If the oil is not absorbed in a timely manner during the extraction process, the heat contained in the oil will damage the various components of the oil and heat extraction and transportation mechanism 1, thereby affecting the efficiency of oil extraction. At the same time, if this part of the heat is wasted in the form of radiation diffusion, it is also a waste of resources. Therefore, an internal heat extraction pipe 31 is also sheathed within the joint pipe 3 used for oil extraction to absorb the oil passing through the joint pipe 3, thereby protecting the oil and heat extraction and transportation mechanism 1, improving the heat extraction efficiency, and absorbing the heat contained in the oil for utilization.

[0057] Further, please refer to Figures 6 to 7. The inner heat extraction pipe 31 includes multiple outer tube bodies 311, multiple inner partition plates 312 and multiple flow dampers 313; the multiple outer tube bodies 311 are spliced ​​and distributed in sequence along the extension direction; the outer side wall of each outer tube body 311 is provided with multiple outer protrusions 3111; the multiple inner partition plates 312 are respectively fixed in the outer tube body 311, and the inner partition plates 312 divide the outer tube body 311 into a first water supply chamber 3112, a second water supply chamber 3113 and a return water chamber 3114; the multiple flow dampers 313 are used to control the water flow velocity inside the outer tube body 311; wherein, each flow damper 313 is correspondingly arranged in the first water supply chamber 3112 and / or the second water supply chamber 3113. It can be understood that in order to make the oil absorb heat in time when it is extracted to protect the oil heat extraction and transportation mechanism 1 and improve the heat extraction efficiency and heat extraction efficiency, the specific configuration of the inner heat extraction pipe 31 includes multiple outer tube bodies 311, multiple inner partition plates 312 and multiple flow dampers 313; the multiple outer tube bodies 311 are respectively spliced ​​and distributed in sequence along the extension direction, that is, the inner heat extraction pipe 31 is formed by splicing multiple outer tube bodies 311 in sequence along the length direction, and the outer side wall of each outer tube body 311 is provided with multiple outer protrusions 313. 111, the outer protrusion 3111 is set to increase the outer surface area of ​​the outer tube body 311, thereby increasing the contact area between the oil and the inner heat extraction pipe 31, and thus improving the heat extraction efficiency of the inner heat extraction pipe 31; multiple inner partition plates 312 are fixed in the outer tube body 311, and the inner partition plates 312 divide the outer tube body 311 into a first water supply chamber 3112, a second water supply chamber 3113 and a return water chamber 3114; multiple flow dampers 313 are used to control the water flow speed inside the outer tube body 311; wherein, each The flow retarder 313 is correspondingly disposed in the first water supply chamber 3112 or the second water supply chamber 3113. Therefore, because the water flow paths in the first water supply chamber 3112 and the second water supply chamber 3113 are different, the complexity of the water flow path can be increased in the heat-rich area of ​​crude oil, allowing the water to fully absorb heat, while in the heat-poor area of ​​crude oil, the water can pass quickly to reduce heat dissipation. In a more preferred embodiment, the return water chamber 3114 occupies half of the cross-sectional area of ​​the outer tube body 311. The flow retarder 313 is arranged in the first water supply chamber 3112, wherein the first water supply chamber 3112 occupies three-eighths of the cross-sectional area of ​​the outer tube body 311. Therefore, while oil is being produced, water is pumped at a constant pressure through the water pipe. The water source passes through the first water supply chamber 3112 and the second water supply chamber 3113 on the outer tube body 311 in sequence, and is delivered through the return water chamber 3114 when reaching the end of the oil production area. At this time, the water supply chamber and the return water chamber 3114 are connected to form a water source loop, thereby realizing circulating heat supply and improving heat extraction efficiency.

[0058] In addition, please refer to Figure 8. A flow controller 314 is further provided inside the inner heat extraction pipe 31. The flow controller 314 includes a water inlet port and a water outlet port, an inner pipe 3141, a diverter port 3142, a flow blocking shaft 3143, a cut-off ring 3144, and a shaft ring 3145. The inner pipe 3141 extends along the direction of the water flow and is slidably installed. A spring 31411 is provided on the peripheral side near the water outlet port. The diverter port 3142 is provided at the side end of the flow controller 314 relative to the inner pipe 3141. The flow blocking shaft 3143 is provided at the side end of the flow controller 314. 3 is provided on the side of the inner tube 3141 near the water inlet port to partially block the inner tube 3141; the intercepting ring 3144 is sleeved on the side of the inner tube 3141 near the water inlet port, and a shaft ring 3145 is further provided in the flow controller 314 to cooperate with the intercepting ring 3144 to control the flow resistance of the water inside the flow controller 314; the water outflow direction of the inner tube 3141 corresponds to the first water supply chamber 3112, and the water outflow direction of the diversion port 3142 corresponds to the second water supply chamber 3113.It can be understood that in order to realize that in the high-heat area, most of the water source of the inner heat collection pipe 31 can be passed into the slow flow device 313 for regional centralized heat collection, and in the low-heat area, most of the water source quickly passes through the first water delivery chamber 3112 and the second water delivery chamber 3113 to avoid excessive retention in the low-heat area and heat diffusion waste, the inner heat collection pipe 31 is also provided with a flow controller 314. The specific configuration of the flow controller 314 includes a water inlet port and a water outlet port, an inner pipe 3141, a diversion port 3142, a flow blocking shaft 3143, a cut-off ring 3144 and a shaft ring 3145; the inner pipe 3141 has a plurality of water sources, and the water source passes through the first water delivery chamber 3112 and the second water delivery chamber 3113 to prevent excessive retention in the low-heat area and heat diffusion waste. 141 extends along the direction of water flow and is slidably installed. A spring 31411 is provided on the peripheral side near the water outlet port. The diversion port 3142 is provided at the side end of the flow controller 314 relative to the inner tube 3141. The choke shaft 3143 is provided on the side of the inner tube 3141 near the water inlet port to partially block the inner tube 3141. The intercepting ring 3144 is provided on the side of the inner tube 3141 near the water inlet port. The flow controller 314 is further provided with a shaft ring 3145 to cooperate with the intercepting ring 3144 to control the flow resistance of the water inside the flow controller 314. The inner tube 3141 is provided with a plurality of choke shafts 3143. The water outflow direction of the diverter port 3142 corresponds to the first water delivery chamber 3112, and the water outflow direction of the diverter port 3142 corresponds to the second water delivery chamber 3113. Therefore, the diverter port 3142 and the inner tube 3141 on the flow controller 314 are always in an open state. When the inner tube 3141 is pushed by the water flow pressure, the flow blocking shaft 3143 can be relatively separated from the inner tube 3141. At this time, the intercepting ring 3144 and the shaft ring 3145 are close to each other, thereby realizing the water source flow control of the diverter port 3142 and the inner tube 3141, that is, controlling the water source to enter the first water delivery chamber 3112 and the second water delivery chamber. 3113, so that in the high-heat area, most of the water source can pass into the flow retarder 313 for regional centralized heat collection, while in the low-heat area, most of the water source quickly passes through the first water supply chamber 3112 and the second water supply chamber 3113 to avoid excessive retention in the low-heat area; in order to control the flow controller 314 in each outer tube body 311 to effectively divert the flow and adjust the flow of the inner tube 3141, the elastic strength of the spring 31411 in each flow controller 314 can be changed, so that when the water pumping pressure in each outer tube body 311 reaches the proposed value, the spring 31411 is correspondingly compressed.

[0059] Further, referring to Figure 6, the flow damper 313 is also provided with a one-way flow channel 3131. The one-way flow channel 3131 is arranged along the extension direction of the joint pipe 3 and is connected to the return water chamber 3114 to collect information on the underground thermal distribution. It is understandable that the thermal distribution of underground oil is uneven, and it is necessary to prioritize the collection of underground thermal distribution information before using the appropriate pressure to pump water. This is to adjust the flow control of the two branches on the flow controller 314 within each section of the outer tube body 311. In high-heat areas, regional concentrated heat extraction can be carried out through the flow damper 313, and most of the water is quickly returned through the one-way flow channel 3131. In low-heat areas, the water passes quickly, reducing retention and preventing the collected heat from being wasted.

[0060] The above are only preferred embodiments of the present application and do not limit the patent scope of the present application. All equivalent structural transformations made based on the contents of the present application specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present application.

Claims

1. An oil thermal co-production system, characterized in that, Comprising: An oil thermal recovery delivery mechanism, including a negative pressure pipeline, an oil production part is formed on the negative pressure pipeline, and negative pressure is formed in the negative pressure pipeline to extract oil from the oil production part; and, A injection and delivery mechanism, including a plurality of flow delivery pipelines, the plurality of flow delivery pipelines are uniformly arranged along the circumferential direction of the negative pressure pipeline and are arranged at intervals with the negative pressure pipeline; Wherein, a jet part is provided on each of the flow delivery pipelines for injecting supercritical carbon dioxide into the petroleum.

2. The oil heat co-production system according to claim 1, wherein The negative pressure pipeline includes: a plurality of joint pipes arranged in a row along its length direction; and, A plurality of elastic shaft sleeves, the elastic shaft sleeves are sleeved on the ends of two adjacent joint pipes to connect the two adjacent joint pipes; Wherein, the oil production part is provided on each of the joint pipes.

3. The oil heat co-production system according to claim 2, characterized in that, The negative pressure pipeline has an oil inlet end; The negative pressure pipeline further includes: A plurality of pumping end pieces respectively sleeved on a plurality of the joint pipes, each pumping end piece is located at one end of the joint pipe close to the oil inlet end, and a plurality of inclined openings communicating with the inside of the joint pipe are penetrated through the pumping end piece for underground crude oil extraction and transportation; and, A plurality of horizontal well gaps are provided corresponding to each of the inclined openings to improve the fluidity of underground crude oil.

4. The oil heat co-production system according to claim 1, wherein, The negative pressure pipeline further includes: A positioning shaft seat sleeved on a plurality of the joint pipes, an elastic member is provided between the inner side wall of the positioning shaft seat and the outer side wall of the joint pipe to center the joint pipe on the positioning shaft seat.

5. The oil thermal co-production system according to claim 1, wherein, The negative pressure pipeline further includes a vibration pipe device sleeved on the negative pressure pipeline to vibrate the negative pressure pipeline.

6. The oil heat co-production system according to claim 5, characterized in that, The vibration pipe device includes: An outer shaft frame, a plurality of air cavities are radially distributed along its inner circumference, and a sealing plug is slidably arranged in each air cavity; the air cavity is also provided with an air inlet and an air outlet, and each air inlet and air outlet is independently supplied with air for exhaust; A guide sleeve pipe is arranged in the outer shaft frame, and the joint pipe is slidably arranged in the guide sleeve pipe; and a connecting member, one end is connected to the sealing plug and the other end is connected to the guide sleeve pipe.

7. The oil heat co-production system according to claim 2, wherein, An inner heat collecting pipe is further sleeved in the joint pipe, and the inner heat collecting pipe is arranged corresponding to the oil production part to absorb the heat of the underground crude oil extracted into the joint pipe.

8. The oil thermal recovery system according to claim 7, wherein The inner heat collecting pipe includes: A plurality of outer pipe bodies are sequentially spliced and distributed along the extending direction; a plurality of outer protruding edges are provided on the outer side wall of each outer pipe body; A plurality of inner partition plates are fixed in the outer pipe body, and the inner partition plates divide the inside of the outer pipe body into a first water delivery cavity, a second water delivery cavity and a return water cavity; and, A plurality of flow regulators are used to control the water flow velocity inside the outer pipe body; wherein, each flow regulator is correspondingly arranged in the first water delivery cavity and / or the second water delivery cavity.

9. The oil heat co-production system according to claim 8, wherein A one-way flow channel is further provided on the flow regulator, and the one-way flow channel is arranged along the extending direction of the joint pipe and communicates with the return water cavity to collect information on the underground thermal distribution.

10. The oil thermal co-production system according to claim 8, characterized in that, A flow control device is further arranged inside the inner heat collecting pipe, and the flow control device includes: A water inlet port and a water outlet port; An inner pipe extends along the water flow direction and is slidably installed, a spring is sleeved on the periphery of the inner pipe close to the water outlet port; a diversion port is arranged on the side end of the flow control device opposite to the inner pipe; A flow blocking shaft is arranged on one side of the inner pipe close to the water inlet port to partially block the inner pipe; and, The intercepting ring is sleeved on one side of the inner pipe close to the water inlet port. An axial ring is also provided in the flow controller to cooperate with the intercepting ring for controlling the flow resistance of the water flow inside the flow controller. Among them, the water outlet direction of the inner pipe corresponds to the first water delivery cavity, and the water outlet direction of the diversion port corresponds to the second water delivery cavity.

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