CN118686582A - A gas phase oil well heating device - Google Patents
A gas phase oil well heating device Download PDFInfo
- Publication number
- CN118686582A CN118686582A CN202410806783.6A CN202410806783A CN118686582A CN 118686582 A CN118686582 A CN 118686582A CN 202410806783 A CN202410806783 A CN 202410806783A CN 118686582 A CN118686582 A CN 118686582A
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- China
- Prior art keywords
- oil well
- inner tube
- gas
- hose
- storage bag
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B36/00—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
- E21B36/003—Insulating arrangements
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/18—Pipes provided with plural fluid passages
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B36/00—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
- E21B36/005—Heater surrounding production tube
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
本申请提供了一种气相油井加热装置，包括储气包以及软管，储气包与软管为采用管道连接，软管远离储气包一端设有内管组件；其中，内管组件包括外管，以及设置于外管内部的内管，外管与内管相交处设有真空腔，涉及油井开采技术领域，其中，该装置在油井井简内添加双层的内管组件，其结构为管中管结构，其内管与外管设有环形间隙通道，用以做回路通道，通过加热的气态惰性气体氮气在一个密闭的带隔热层的内管，注入到油井的结蜡点的深度，再通过内管与外管的环形间隙通道，返回井口，通过软管接入储气包，再由压缩机升高气压并提升温度，形成闭路循环，同时高温的氮气通过外管的热传导，给油井内原油进行均衡加热，提升原油开采效率。
The present application provides a gas-phase oil well heating device, comprising a gas storage bag and a hose, wherein the gas storage bag and the hose are connected by a pipeline, and an inner tube assembly is provided at one end of the hose away from the gas storage bag; wherein the inner tube assembly comprises an outer tube and an inner tube arranged inside the outer tube, and a vacuum chamber is provided at the intersection of the outer tube and the inner tube, and relates to the technical field of oil well exploitation, wherein the device adds a double-layer inner tube assembly in the well casing of the oil well, and its structure is a tube-in-tube structure, wherein the inner tube and the outer tube are provided with an annular gap channel, which is used as a loop channel, and the heated gaseous inert gas nitrogen is injected into a closed inner tube with a heat insulation layer to the depth of the waxing point of the oil well, and then returns to the wellhead through the annular gap channel between the inner tube and the outer tube, and is connected to the gas storage bag through the hose, and then the air pressure and temperature are increased by the compressor to form a closed loop, and at the same time, the high-temperature nitrogen is evenly heated to the crude oil in the oil well through the heat conduction of the outer tube, thereby improving the efficiency of crude oil exploitation.
Description
Technical Field
The invention relates to the technical field of oil well exploitation, in particular to a gas-phase oil well heating device.
Background
The oil well is a hole drilled by a well distribution system planned according to oil field development, the oil rises to a well head from the bottom of the well, and the oil well is a hole drilled by a drilling method. After the oil well reaches the oil layer, the oil layer casing is lowered, and the annular space between the casing and the well wall is filled with oil well cement to maintain the well wall and to seal oil, gas and water layers.
When petroleum is extracted, the crude oil has the characteristics of high coagulation, high viscosity and the like, the problem of inconvenient extraction occurs in the extraction process, and the heating device for heating the crude oil in the shaft of the oil extraction well in an oil field is needed to be arranged, so that the crude oil within one kilometer deep in the oil well can be uniformly heated, the effect of reducing viscosity and melting wax of the crude oil is achieved, and the very effective effect of extracting the high coagulation, high viscosity and high viscosity crude oil is achieved.
Disclosure of Invention
In order to overcome the existing problems, the embodiment of the application provides a gas-phase oil well heating device, which is characterized in that a double-layer inner pipe assembly is added in an oil well Jian Na, the structure of the device is a pipe-in-pipe structure, the device is fixedly heated in a self-blowing well and an oil-submersible electric pump well, and can also replace a sucker rod to work in the oil well, an annular clearance channel is arranged between the inner pipe and an outer pipe of the device to be used as a loop channel, the inner pipe is of an assembly designed double-layer structure, a vacuum cavity is arranged in the middle of the double-layer, the heat preservation effect is improved, heated gaseous inert gas nitrogen is injected into the depth of a wax deposition point of an oil well in a sealed inner pipe with a heat insulation layer, the heated gaseous inert gas nitrogen is returned to a wellhead through the annular clearance channel between the inner pipe and the outer pipe, the heated gas is connected into a gas storage bag through a hose, the gas storage bag is further heated by a compressor to form closed circulation, and the high-temperature nitrogen is heated through heat conduction of the outer pipe, and the crude oil is balanced and heated in the oil well, and the crude oil exploitation efficiency is improved.
The technical scheme adopted by the embodiment of the application for solving the technical problems is as follows:
The gas-phase oil well heating device comprises a gas storage bag and a hose, wherein the hose is used for connecting ground equipment and a downhole part, if a hard pipeline can be used during self-injection well, an insulation layer is needed to be additionally arranged, so that heat loss is reduced, the gas storage bag is connected with the hose through a pipeline, an inner pipe assembly is arranged at one end, far away from the gas storage bag, of the hose, the processed inner pipe assembly has a single length of six meters, a plurality of pipes are connected at will, and the pipes can be combined at will within 6-1000m according to the heating depth required by an oil well;
The inner tube assembly comprises an outer tube and an inner tube arranged in the outer tube, and a vacuum cavity is arranged at the intersection of the outer tube and the inner tube.
Preferably, the inner pipe assembly further comprises an internal thread coupling connected with the outer pipe, the internal thread coupling is made of stainless steel, a sealing surface is machined at a port of the internal thread coupling, a process hole is machined at a base part of the internal thread coupling corresponding to the sealing ring on the counter wire, and the counter wire is arranged at the intersection of the internal thread coupling and the outer pipe;
wherein, the one end of inner tube subassembly still is equipped with the UNICOM ware.
Preferably, the inner tube assembly is provided with annular clearance passages with the outer tube and the inner tube.
Preferably, a plurality of centralizers are arranged in the vacuum cavity, the centralizers are arranged in the vacuum cavity at equal intervals, the centralizers are designed in the vacuum cavity for achieving uniformity of the vacuum cavity, the diameter of the centralizers is 2.5mm, the centralizers are made of inorganic materials, and the temperature resistance of the centralizers is more than 200 ℃.
Preferably, the outer surface of the butt wire is provided with a plurality of clamping grooves, and a sealing ring is sleeved in each of the clamping grooves;
The end face of the butt wire is further provided with a groove, stainless steel for the butt wire is machined, a plurality of clamping grooves are machined in the thread root portion and the through hole, the butt wire is used for installing a sealing ring, and the butt wire waist portion is machined with a groove for matching with professional tools to lift.
Preferably, the gas storage bag is located one end of the hose is further provided with a compressor and a heater, the heater is located the inner side of the hose is provided with a stop valve, the stop valve is used for closing a gas source during equipment maintenance and oil well operation, a pipeline is convenient to detach, the compressor can be an integrated airtight compressor, compression efficiency is improved, and meanwhile maintenance is convenient.
Preferably, the hose and the intersection of the inner tube assembly are provided with four-way joints, the four-way joints are of a double-channel design, the air inlet is communicated with the inner tube assembly, the air return port is communicated with the annular clearance channel, and the oil pumping well can be connected with a rope hanger of the oil pumping machine through a pull rod, so that the pull rod column is connected with a piston of the oil pumping machine.
Preferably, the gas storage bag is located at one end of the inner pipe assembly and is provided with a gas pipeline, the surface wall of the gas storage bag is provided with a process valve, the gas storage bag is located at the inner side of the compressor and is provided with a filter, the filter is used for filtering particulate impurities, water can be filtered, and one end of the gas storage bag is provided with a safety valve.
The embodiment of the application has the advantages that:
The device adds double-deck inner tube subassembly in oil well Jian Na, its structure is pipe-in-pipe structure, fixed heating in self-blowing well and electric submersible pump well, also can replace the sucker rod work in the oil-well pump well, its inner tube and outer tube are equipped with annular clearance passageway for do the return circuit passageway, the inner tube is the bilayer structure of an assembly design, be the vacuum chamber in the middle of the bilayer, promote the heat preservation effect, through the gaseous inert gas nitrogen gas of heating at a inclosed inner tube of taking the insulating layer, pour into the depth of the wax deposition point of oil well, rethread inner tube and outer tube annular clearance passageway, return the well head, insert the gas storage package through the hose, raise atmospheric pressure and promote the temperature by the compressor again, form closed circuit circulation, the heat conduction of high temperature nitrogen gas through the outer tube carries out balanced heating for the crude oil in the oil well simultaneously, promote crude oil exploitation efficiency.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is a schematic flow diagram of a gas-phase oil well heating apparatus according to the present invention;
FIG. 2 is a schematic cross-sectional view of an inner tube assembly of the gas-phase oil well heating apparatus of the present invention;
FIG. 3 is a schematic diagram of a cross-sectional structure of a pair wire in the gas-phase oil well heating device of the invention.
The main reference numerals illustrate:
1. A gas storage bag; 2. a safety valve; 3. a filter; 4. a compressor; 5. a heater; 6. a stop valve; 7. a hose; 8. a four-way joint; 9. an inner tube assembly; 91. an internal thread coupling; 92. an outer tube; 93. an inner tube; 94. a vacuum chamber; 95. a centralizer; 10. a communicating vessel; 11. an annular clearance channel; 12. a process valve; 13. aligning the wires; 14. a seal ring; 15. a groove.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. In addition, hereinafter, for convenience of description, references to "upper", "lower", "left", "right" are equal to directions of upper, lower, left, right, etc. of the drawing itself, and the references to "first", "second", etc. are to be distinguished in description, and have no other special meaning.
The embodiment of the application solves the problems in the prior art by providing a gas-phase oil well heating device, which is characterized in that a double-layer inner pipe assembly is added in an oil well Jian Na, the structure of the device is a pipe-in-pipe structure, the device is fixedly heated in a self-blowing well and an electric submersible pump well, and can also work in place of a sucker rod in the oil well, an annular clearance channel is arranged between the inner pipe and an outer pipe to be used as a loop channel, the inner pipe is of an assembly designed double-layer structure, a vacuum cavity is arranged in the middle of the double-layer, the heat preservation effect is improved, heated gaseous inert gas nitrogen is injected into the depth of a wax deposition point of the oil well in a sealed inner pipe with a heat insulation layer, the heated gaseous inert gas nitrogen is returned to a wellhead through the annular clearance channel between the inner pipe and the outer pipe, the heated gaseous inert gas nitrogen is connected into an air storage bag through a hose, the air storage bag is further heated by a compressor, the closed circulation is formed, and the temperature is improved, and meanwhile, the high-temperature nitrogen is conducted through the outer pipe to uniformly heat the oil well, so that the crude oil efficiency is improved.
The technical scheme in the embodiment of the application aims to solve the problems, and the overall thought is as follows:
Example 1
The embodiment provides a specific structure of a gas-phase oil well heating device, as shown in fig. 1-3, the gas-phase oil well heating device comprises a gas storage bag 1 and a hose 7, wherein the hose 7 is used for connecting ground equipment and underground parts, if a hard pipeline can be used in a self-injection well, an additional heat insulation layer is needed to reduce heat loss, the gas storage bag 1 and the hose 7 are connected through pipelines, an inner pipe assembly 9 is arranged at one end of the hose 7, far from the gas storage bag 1, the processed inner pipe assembly 9 has a single length of six meters, a plurality of pipes are connected at will, and the pipes can be combined at will within 6-1000m according to the heating depth required by an oil well;
The inner tube assembly 9 includes an outer tube 92 and an inner tube 93 disposed inside the outer tube 92, a vacuum chamber 94 is disposed at an intersection of the outer tube 92 and the inner tube 93, the outer tube 92 is a stainless steel seamless steel tube of 19×1, and the inner tube 93 is a stainless steel seamless tube of 12×0.5.
The inner tube assembly 9 further comprises an inner thread coupling 91 connected with the outer tube 92, the inner thread coupling 91 is threaded by stainless steel, a sealing surface is machined at a port of the inner thread coupling 91 and corresponds to the sealing ring 14 on the opposite wire 13, a process hole is machined at a base part of the inner thread coupling 91 for vacuumizing, and the opposite wire 13 is arranged at the intersection of the inner thread coupling 91 and the outer tube 92;
wherein one end of the inner tube assembly 9 is further provided with a communicator 10.
The inner tube assembly 9 and the outer tube 92 and the inner tube 93 are provided with annular gap passages 11.
The inside of the vacuum cavity 94 is provided with a plurality of centralizers 95, the plurality of centralizers 95 are arranged in the vacuum cavity 94 at equal intervals, the centralizers 95 are designed in the vacuum cavity 94 for achieving uniformity of the vacuum cavity 94, the diameter is 2.5mm, the centralizers are processed by inorganic materials, and the temperature resistance is more than 200 ℃.
A plurality of clamping grooves are formed in the outer surface of the counter wire 13, and a sealing ring 14 is sleeved in each of the clamping grooves;
the end face of the wire 13 is further provided with a groove 15, the wire 13 is processed by stainless steel, a plurality of clamping grooves are processed in the thread root and the through hole, the clamping grooves are used for installing the sealing ring 14, and the waist of the wire 13 is processed with the groove 15, so that the clamping grooves are matched with professional tools for lifting operation.
By adopting the technical scheme:
the double-layer inner pipe assembly 9 is added in the oil well Jian Na, the structure is a pipe-in-pipe structure, the oil well is fixedly heated in a self-blowing well and an electric submersible pump well, a sucker rod can be replaced in the oil well to work, an annular gap channel 11 is arranged between an inner pipe 93 and an outer pipe 92 to be used as a loop channel, the inner pipe 93 is of a double-layer structure designed by an assembly, a vacuum cavity 94 is arranged in the middle of the double-layer structure, the heat preservation effect is improved, heated gaseous inert gas nitrogen is filled into the depth of a paraffin precipitation point of the oil well in the inner pipe 93 and the outer pipe 92, the heated gaseous inert gas is returned to a wellhead through the annular gap channel 11 between the inner pipe 93 and the outer pipe 92, the heated gaseous inert gas is connected into the gas storage bag 1 through a hose 7, and the air pressure is increased and the temperature is increased by the compressor 4 to form closed circulation.
Example 2
The embodiment provides a specific structure of a gas-phase oil well heating device, as shown in fig. 1-3, one end of a gas storage bag 1, which is located at a hose 7, is also provided with a compressor 4 and a heater 5, the heater 5 is located at the inner side of the hose 7 and is provided with a stop valve 6, the stop valve 6 is used for closing a gas source during equipment maintenance and oil well operation, a pipeline is convenient to detach, the compressor 4 can be an integrated airtight compressor, compression efficiency is improved, and maintenance is convenient.
The heater 5 includes the following structures;
The electric heater is a PTC ceramic heater, can automatically adjust the heating temperature, prevent the temperature from overheating, improve the efficiency and save the energy;
the fuel heater can use natural gas as well as oil well casing gas, combustible waste gas of oil refinery, methane and other recovered gases;
The air energy heater absorbs heat in the atmosphere space by utilizing the Gu's cycle theorem, and heats nitrogen by increasing the temperature by the compressor, so that the air energy heater is a very energy-saving heating mode, and the heat efficiency of the air energy heater can reach more than 300%;
the water energy heater can fully utilize various waste heat, such as industrial waste heat, waste heat of a power plant, hot springs and the like;
the solar heater is a tracking reflection condensing heat collector, and is the most economical heat source.
The crossing department of hose 7 and inner tube subassembly 9 is equipped with cross 8, and cross 8 is the binary channels design, and the air inlet communicates with inner tube subassembly 9, and the return air mouth communicates with annular gap passageway 11, still can be connected with beam-pumping unit rope hanger through the pull rod on the rod-pumped well, drags the pole post and the connection of oil-well pump piston.
The gas storage package 1 is located inner tube assembly 9 one end and is equipped with the gas-supply pipeline, and its surface wall is equipped with process valve 12, and gas storage package 1 is located the inboard filter 3 that is equipped with of compressor 4, and filter 3 is used for filtering the granule impurity, can also filter moisture in addition, and the one end of gas storage package 1 is equipped with relief valve 2.
By adopting the technical scheme:
the air storage bag 1 enters the filter 3, the filter 3 is used for filtering particulate impurities, in addition, water can be filtered, then the air storage bag enters the compressor 4, the air pressure is increased and the temperature is increased by the compressor 4, closed circulation is formed, meanwhile, high-temperature nitrogen is conducted through the heat conduction of the outer tube 92, crude oil in an oil well is heated in an equalizing mode, and the crude oil extraction efficiency is improved.
Working principle:
The heated gaseous inert gas nitrogen is injected into the depth of the wax precipitation point of the oil well in a sealed inner pipe 93 with a heat insulation layer, then returns to the wellhead through the inner pipe 93 and the annular gap channel 11 of the outer pipe 92, is connected into the gas storage bag 1 through a hose 7, and then is pressurized by a compressor 4 to form closed circulation, and meanwhile, high-temperature nitrogen is conducted through the heat conduction of the outer pipe 92 to heat crude oil in the oil well, so that the outer pipe 92 is sealed, gas cannot leak into the crude oil, difficulty is not caused to crude oil processing, combustion is not supported due to the fact that the nitrogen is very stable, the environment-friendly oil well is a very safe medium, and is particularly suitable for being used in high-cold areas due to the fact that a heat carrier is gas and has no freezing point, and various renewable energy sources can be used due to the closed circulation, namely energy conservation and environment friendliness are achieved.
Finally, it should be noted that: it is apparent that the above examples are only illustrative of the present invention and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410806783.6A CN118686582A (en) | 2024-06-21 | 2024-06-21 | A gas phase oil well heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410806783.6A CN118686582A (en) | 2024-06-21 | 2024-06-21 | A gas phase oil well heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118686582A true CN118686582A (en) | 2024-09-24 |
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ID=92764235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410806783.6A Withdrawn CN118686582A (en) | 2024-06-21 | 2024-06-21 | A gas phase oil well heating device |
Country Status (1)
| Country | Link |
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| CN (1) | CN118686582A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120312166A (en) * | 2025-06-03 | 2025-07-15 | 江苏腾龙石化机械有限公司 | Double-layer insulation gas injection wellhead |
-
2024
- 2024-06-21 CN CN202410806783.6A patent/CN118686582A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120312166A (en) * | 2025-06-03 | 2025-07-15 | 江苏腾龙石化机械有限公司 | Double-layer insulation gas injection wellhead |
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Application publication date: 20240924 |