CN115596417A - Layered steam injection heating system - Google Patents
Layered steam injection heating system Download PDFInfo
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- CN115596417A CN115596417A CN202110773361.XA CN202110773361A CN115596417A CN 115596417 A CN115596417 A CN 115596417A CN 202110773361 A CN202110773361 A CN 202110773361A CN 115596417 A CN115596417 A CN 115596417A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 130
- 238000010793 Steam injection (oil industry) Methods 0.000 title claims abstract description 96
- 238000001514 detection method Methods 0.000 claims description 21
- 230000005540 biological transmission Effects 0.000 claims description 15
- 238000012856 packing Methods 0.000 claims description 14
- 238000009529 body temperature measurement Methods 0.000 claims description 8
- 239000012212 insulator Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000004861 thermometry Methods 0.000 claims description 2
- 238000010795 Steam Flooding Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 7
- 238000011084 recovery Methods 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000005065 mining Methods 0.000 abstract description 2
- 238000002347 injection Methods 0.000 abstract 1
- 239000007924 injection Substances 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 117
- 239000000243 solution Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 5
- 238000009530 blood pressure measurement Methods 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 239000003129 oil well Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
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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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/14—Obtaining from a multiple-zone well
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
- E21B43/2401—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection by means of electricity
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (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)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention relates to a layered steam flooding mining technology, in particular to a layered steam injection heating system, which comprises: a steam injection pipe; the heating device comprises a plurality of heating pipes, the plurality of heating pipes are arranged in the steam injection pipe, the plurality of heating pipes are arranged along the height direction of the steam injection pipe, and the plurality of heating pipes are different in length; and the controller is used for controlling the heating temperature of the heating pipes. So set up, the heating pipe through different length corresponds the oil reservoir of the different degree of depth, heats for the steam of the oil reservoir of the different degree of depth of injection, controls every heating pipe through the controller for the steam temperature of injecting into every oil reservoir can accurate regulation and control, has more pointed, has improved the quality of injecting into every oil reservoir steam, has improved the effect of steam flooding oil recovery, avoids the waste of steam, has practiced thrift the cost.
Description
Technical Field
The invention relates to a layered steam flooding mining technology, in particular to a layered steam injection heating system.
Background
The layered steam flooding process technology is the main method for developing heavy oil reservoir, and the method is to inject the steam generated on the ground into the well and to separate the steam into each oil layer, and to exploit the heavy oil reservoir through steam flooding. Because the steam that produces ground among the current steam injection system directly pours into in the pit into, be difficult to guarantee to annotate the steam quality in the pit, and can't heat the steam of the oil reservoir of pouring into the position deeply, can't guarantee the exploitation effect, consequently, research and development steam injection heating system in layers heats the steam of pouring into each oil reservoir, and is worth very much.
Disclosure of Invention
The embodiments of the present invention are directed to solving at least one of the technical problems occurring in the prior art or the related art.
Therefore, the embodiment of the invention aims to provide a layered steam injection heating system.
In order to achieve the above object, a technical solution of an embodiment of the present invention provides a layered steam injection heating system, including: a steam injection pipe;
the heating device comprises a plurality of heating pipes, the plurality of heating pipes are arranged in the steam injection pipe, the plurality of heating pipes are arranged along the height direction of the steam injection pipe, and the plurality of heating pipes are different in length;
and the controller is used for controlling the heating temperature of the heating pipes.
In addition, the layered steam injection heating system in the technical scheme provided by the embodiment of the invention can also have the following additional technical characteristics:
in one aspect of the embodiment of the present invention, the heating device includes:
a plurality of cables, each heating tube connected to each controller by at least one cable.
In one technical solution of the embodiment of the present invention, the heating device further includes:
a housing;
an insulator disposed between the plurality of heating tubes and the housing;
and the sealing cover is connected to the end face of the shell.
In one technical solution of the embodiment of the present invention, the layered steam injection heating system further includes:
the sleeve is sleeved on the steam injection pipe;
the steam injection pipes are used for penetrating through a plurality of oil layers, each sieve pipe is sleeved on the steam injection pipe and positioned between the oil layer and the steam injection pipe, and the number of the sieve pipes is matched with the number of the oil layers;
wherein each oil layer corresponds to at least one heating pipe.
In one technical solution of the embodiment of the present invention, the layered steam injection heating system further includes: a dispensing assembly, the dispensing assembly comprising:
the distribution valve is connected to the bottom of the steam injection pipe;
and the pressure guide pipe is arranged in the steam injection pipe, one end of the pressure guide pipe is connected to the distribution valve, and the other end of the pressure guide pipe is arranged in the oil layer.
In one technical solution of the embodiment of the present invention, the layered steam injection heating system further includes: and the oil layer information detection assembly is arranged between the sleeve and the steam injection pipe.
In one technical solution of an embodiment of the present invention, a reservoir information detection component includes: oil reservoir temperature measurement subassembly, oil reservoir temperature measurement subassembly includes:
protecting the tube;
the temperature measuring line is arranged in the first protection pipe and is connected to the controller;
the temperature sensor is connected to the temperature measuring line and used for detecting the temperature of the oil layer;
wherein, at least one temperature sensor is arranged in each oil layer.
In one technical solution of the embodiment of the present invention, the oil layer information detecting component further includes: oil reservoir pressure measurement subassembly, oil reservoir pressure measurement subassembly includes:
the pressure transmission joint is connected with the controller; the pressure transmission pipe is connected to the pressure transmission joint and used for transmitting a pressure signal of the oil layer; wherein, each oil layer is provided with at least one pressure transmission pipe.
In one technical solution of the embodiment of the present invention, the layered steam injection heating system further includes: and the packing assembly is arranged between the sleeve and the steam injection pipe, and the oil layer information detection assembly penetrates through the packing assembly.
In one technical solution of an embodiment of the present invention, a packing assembly includes:
the first packer is arranged between the oil wellhead and the oil layer;
a plurality of second packers disposed between a plurality of adjacent oil zones.
In one technical solution of the embodiment of the present invention, the layered steam injection heating system further includes: the sealer is arranged at the oil well mouth; wherein, the controller sets up outside annotating the steam pipe, and oil reservoir information detection subassembly wears to locate the sealer and connects in the controller.
Compared with the prior art, the invention at least comprises the following beneficial effects:
the invention provides a layered steam injection heating system which is provided with a steam injection pipe, a heating device and a controller, wherein steam is input to each oil layer through the steam injection pipe, the heating device is provided with a plurality of heating pipes, the heating pipes are arranged in the steam injection pipe, the heating pipes are arranged along the height direction of the steam injection pipe, the heating pipes are different in length, the heating pipes with different lengths correspond to the oil layers with different depths, the steam injected into the oil layers with different depths is heated, and the heating temperatures of the heating pipes are controlled through the controller, so that the temperature of the steam injected into each oil layer can be accurately regulated and controlled, the heating system is more targeted, the dryness of the steam injected into each oil layer is improved, the effect of steam drive oil extraction is improved, the waste of the steam is avoided, and the cost is saved.
Additional advantages, objects, and features of the layered steam injection heating system of the present invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 shows a schematic structural diagram of a layered steam injection heating system according to an embodiment of the present invention;
FIG. 2 shows a cross-sectional view of one direction of a heating device according to one embodiment of the present invention;
FIG. 3 shows a cross-sectional view of another orientation of a heating device according to an embodiment of the invention;
FIG. 4 shows a cross-sectional view in yet another orientation of a heating device according to an embodiment of the present invention;
FIG. 5 illustrates a schematic structural view of an oil reservoir thermometry assembly according to one embodiment of the present invention;
FIG. 6 illustrates a schematic structural view of a pay load cell assembly according to an embodiment of the present invention;
fig. 7 illustrates a structural view of a pay load cell assembly according to another embodiment of the present invention.
Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 7 is:
100 steam injection pipes, 200 heating devices, 210 heating pipes, 220 cables,
230 housing, 240 insulator, 250 seal cap, 300 controller,
400 casing, 500 screen, 600 dispense assembly, 610 dispense valve,
620 pressure leading pipe, 700 oil layer information detection component, 710 oil layer temperature measurement component,
712 protective tubing, 714 temperature sensing wires, 716 temperature sensors, 720 reservoir pressure measurement components,
724 a pressure transmitting joint, 726 a pressure transmitting pipe, 728 a pressure transmitting port, 729 an annular seal head,
800 packing assembly, 810 first packer, 820 second packer, 900 sealer.
Detailed Description
The present invention is further described in detail below with reference to the drawings and examples so that those skilled in the art can practice the invention with reference to the description.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or combinations thereof.
In one embodiment of the present invention, as shown in fig. 1, there is provided a layered steam injection heating system comprising: a steam injection pipe 100; the heating device 200, the heating device 200 comprising a plurality of heating pipes 210, the plurality of heating pipes 210 being arranged in the steam injection pipe 100, the plurality of heating pipes 210 being arranged along the height direction of the steam injection pipe 100, the plurality of heating pipes 210 being different in length; a controller 300, wherein the controller 300 is used for controlling the heating temperature of the plurality of heating pipes 210.
In this embodiment, the layered steam injection heating system is provided with a steam injection pipe 100, a heating device 200 and a controller 300, wherein steam is input to each oil layer through the steam injection pipe 100, the heating device 200 is provided with a plurality of heating pipes 210, the plurality of heating pipes 210 are arranged in the steam injection pipe 100, and the plurality of heating pipes 210 are arranged along the height direction of the steam injection pipe 100, the lengths of the plurality of heating pipes 210 are different, the number of the heating pipes 210 can be set according to the number of the oil layers to be exploited, the length of the heating pipe 210 is set according to the position of each oil layer, it can be understood that each heating pipe 210 is located at the top position of each oil layer, so that the steam is heated before being delivered to the oil layer, excessive heat loss in the delivery process is avoided, and the cost is saved. And the heating temperature of the heating pipes 210 is controlled by the controller 300, so that the temperature of steam injected into each oil layer can be accurately regulated and controlled, the control method has pertinence, the dryness of the steam injected into each oil layer is improved, the steam drive oil extraction effect is improved, the waste of the steam is avoided, and the cost is saved.
In one embodiment, as shown in fig. 2 to 4, when there are two oil layers, two heating pipes 210 with different lengths are correspondingly disposed to correspond to the two oil layers, and the two heating pipes 210 are disposed in a crossed manner without interfering with each other, so that the heating temperature is controlled more accurately.
In one embodiment of the present invention, as shown in fig. 1 to 4, the heating apparatus 200 includes: a plurality of cables 220, each heat pipe 210 being connected to each controller 300 by at least one cable 220.
In this embodiment, heating device 200 is provided with a plurality of cables 220, and is concrete, the one end of every cable 220 is connected in every heating pipe 210, the other end of every cable 220 is connected in controller 300, so set up, make controller 300 control the heating temperature of every heating pipe 210 through every cable 220, make heating temperature control more accurate, and it is pointed, and is concrete, the steam temperature of every oil reservoir is confirmed according to the ignition point of every oil reservoir, make steam can ignite the oil reservoir, carry out steam flooding oil recovery, avoid deep oil reservoir because steam transport distance overlength loss heat is too much, can't ignite the oil reservoir and cause the poor condition of exploitation effect to take place, and simultaneously, the quality of steam has been improved to the accurate control of the temperature of steam, avoid steam to become hot water, the condition that leads to unable exploitation takes place, the efficiency of steam flooding has been improved.
In an embodiment of the present invention, as shown in fig. 2 to 4, the heating device 200 further includes:
a housing 230; an insulator 240, the insulator 240 being disposed between the plurality of heating tubes 210 and the case 230; and a sealing cover 250, wherein the sealing cover 250 is connected to the end surface of the shell 230.
In this embodiment, the heating apparatus 200 is further provided with a housing 230, an insulator 240, and a sealing cover 250, wherein the plurality of heating pipes 210 and the cables 220 are disposed in the housing 230, are received by the housing 230, and protect the heating pipes 210 and the cables 220, improving the stability of heating. An insulator 240 is arranged between the housing 230 and the plurality of heating tubes 210, so that the condition of electric conduction is avoided, the resistance value of the heating tube 210 is changed, and the heating effect and the accuracy of the heating temperature are affected. The sealing cover 250 is covered on the end face of the shell 230, so that the steam in the steam injection pipe 100 is prevented from entering the heating device 200 to damage the heating device 200, and the service life of the equipment is prolonged.
In one embodiment of the present invention, as shown in fig. 1, the layered steam injection heating system further comprises: the sleeve 400, the sleeve 400 is sleeved on the steam injection pipe 100; the steam injection pipes 100 are used for penetrating a plurality of oil layers, each sieve pipe 500 is sleeved on the steam injection pipe 100 and positioned between the oil layer and the steam injection pipe 100, and the number of the sieve pipes 500 is matched with the number of the oil layers; wherein each oil layer corresponds to at least one heating pipe 210.
In this embodiment, the layered steam injection heating system is further provided with a sleeve 400 and a plurality of sieve tubes 500, wherein the sleeve 400 is sleeved outside the steam injection pipe 100, the steam injection pipe 100 is protected by the sleeve 400, and the service life of the equipment is prolonged. And leave the space between sleeve pipe 400 and steam injection pipe 100 for place other equipment, the reasonable space that has utilized, steam injection pipe 100 wears to locate a plurality of oil reservoirs, the position that is located every oil reservoir at steam injection pipe 100 is provided with screen pipe 500, steam injection pipe 100 is located to screen pipe 500 cover, sand in the oil reservoir through screen pipe 500, impurity such as stone is sieved out, prevent to destroy equipment, the quality of oil recovery is improved, and screen pipe 500 has formed the gas circuit, make steam pass through screen pipe 500 and get into the oil reservoir, the delivery efficiency of steam is improved.
In one embodiment of the present invention, as shown in FIG. 1, a dispensing assembly 600 comprises: a distribution valve 610, wherein the distribution valve 610 is connected to the bottom of the steam injection pipe 100; and the pressure guide pipe 620 is arranged in the steam injection pipe 100, one end of the pressure guide pipe 620 is connected to the distribution valve 610, and the other end of the pressure guide pipe 620 is arranged in an oil layer.
In this embodiment, the layered steam injection heating system is further provided with a distribution assembly 600, the distribution assembly 600 is provided with a distribution valve 610 and pressure guiding pipes 620, wherein the distribution valve 610 is arranged at the bottom of the steam injection pipe 100, the number of the pressure guiding pipes 620 is arranged according to the number of oil layers, specifically, one end of each pressure guiding pipe 620 is arranged in each oil layer, the other end of each pressure guiding pipe 620 is connected to the distribution valve 610, the pressure of each oil layer is guided into the distribution valve 610 through each pressure guiding pipe 620, and the distribution valve 610 distributes the amount of steam delivered to the oil layer according to the pressure of each oil layer, it can be understood that the pressure value of the oil layer is determined according to geological information of the oil layer, and the larger the steam injection amount of the oil layer, the larger the pressure of the oil layer, and the larger the amount of steam required to be delivered.
In one embodiment of the present invention, the layered steam injection heating system further comprises: a layer information detecting unit 700, the layer information detecting unit 700 being disposed between the casing 400 and the steam injection pipe 100.
In this embodiment, the layered steam injection heating system is further provided with a reservoir information detection assembly 700 for detecting reservoir information, the reservoir information detection assembly 700 is disposed in a space formed by the casing 400 and the steam injection pipe 100, and the detected reservoir information is fed back to the controller 300 through the reservoir information detection assembly 700, so that the controller 300 can adjust the temperature of steam delivered to the reservoir according to the reservoir information.
In one embodiment of the present invention, as shown in fig. 5, the reservoir information detection component 700 includes: oil layer temperature measurement subassembly 710, oil layer temperature measurement subassembly 710 includes: a protective tube 712; the temperature measuring wire 714 is arranged in the protective tube 712, and the temperature measuring wire 714 is connected to the controller 300; the temperature sensor 716 is connected to the temperature measuring line 714 and used for detecting the temperature of the oil layer; wherein at least one temperature sensor 716 is disposed within each oil layer.
In this embodiment, the oil layer information detecting assembly 700 is provided with an oil layer temperature measuring assembly 710, the oil layer temperature measuring assembly 710 is provided with a protection tube 712, a temperature measuring line 714 and a temperature sensor 716, wherein at least one temperature sensor 716 is arranged inside each oil layer to detect the temperature of the oil layer, and the temperature sensor 716 is connected to the controller 300 through the temperature measuring line 714, so as to feed the temperature information of the oil layer back to the controller 300, the controller 300 adjusts the temperature of the heating tube 210 corresponding to each oil layer according to the temperature information of each oil layer fed back by the temperature sensor 716, so as to adjust the steam temperature delivered to each oil layer in a targeted manner, thereby improving the steam dryness, improving the effect of steam drive oil recovery, avoiding the waste of steam, and saving the cost. And the temperature measuring line 714 and the temperature sensor 716 are arranged in the protection pipe 712, the measuring result of the temperature sensor 716 is protected from interference through the protection pipe 712, and meanwhile, the service life of the equipment is prolonged.
In one embodiment of the present invention, as shown in fig. 6, the reservoir information detection component 700 further includes: reservoir pressure test subassembly 720, reservoir pressure test subassembly 720 includes: the pressure transmitting joint 724, the pressure transmitting joint 724 is connected to the controller 300; the pressure transmission pipe 726 is connected to the pressure transmission joint 724 and used for transmitting a pressure signal of an oil layer; wherein at least one pressure transfer tube 726 is arranged in each oil layer.
In this embodiment, the oil layer temperature measuring component 710 is provided with a pressure transmitting joint 724 and a pressure transmitting pipe 726, wherein at least one pressure transmitting pipe 726 is arranged inside each oil layer to transmit a pressure signal of the oil layer, and the pressure transmitting pipe 726 is connected to the controller 300 through the pressure transmitting joint 724 to feed back the pressure information of the oil layer to the controller 300, so as to monitor whether the pressure of the oil layer is within a normal range, thereby ensuring the normal operation of the steam-driven oil production and ensuring the stability of the operation.
In one embodiment, as shown in fig. 7, the number of the oil layers is two, the number of the pressure transmission pipes 726 matches the number of the oil layers, and is also two, the pressure transmission pipes 726 of the oil layer with a shallow depth are sleeved outside the pressure transmission pipes 726 of the oil layer with a deep depth, and pressure transmission ports are formed in the side surfaces of the pressure transmission pipes 726 on the outer sides, so that pressure information of the oil layer with a shallow depth is transmitted to the controller 300 through the pressure transmission pipes 726, an annular seal head is arranged between the two pressure transmission pipes 726, pressure mixing of the two oil layers is avoided, pressure information collection of each oil layer is more accurate, and by means of the arrangement, the difficulty of pipe descending and the frequency of pipe descending are reduced, and construction efficiency is improved.
In one embodiment of the present invention, as shown in fig. 1, the layered steam injection heating system further comprises: the packing assembly 800, the packing assembly 800 sets up between sleeve pipe 400 and steam injection pipe 100, and oil formation information detection subassembly 700 wears to locate packing assembly 800.
In this embodiment, steam heating system is annotated in layering still is provided with packing subassembly 800, it is concrete, packing subassembly 800 sets up in the space that forms between sleeve pipe 400 and steam injection pipe 100, and oil reservoir information detection subassembly 700 wears to locate packing subassembly 800, so set up, the protective capacities to oil reservoir information detection subassembly 700 has been improved, avoid steam to return, cause destruction to oil reservoir information detection subassembly 700, when improving equipment life, the accuracy of oil reservoir information detection subassembly 700 testing result has been guaranteed, and then guaranteed the accurate degree of every heater of controller 300 control to the heating temperature who carries the steam of every oil reservoir.
In one embodiment of the present invention, as shown in FIG. 1, a packing assembly 800 includes: a first packer 810, the first packer 810 being disposed between the wellhead and the reservoir; a plurality of second packers 820, the plurality of second packers 820 disposed between a plurality of adjacent oil zones.
In this embodiment, the packing assembly 800 is provided with a first packer 810 and a second packer 820, wherein the first packer 810 is arranged between an oil wellhead and an oil layer nearest to the oil wellhead, so as to protect the oil layer temperature measuring assembly 710 and the oil layer pressure measuring assembly 720 corresponding to the oil layer nearest to the oil wellhead to be accurate and work normally; second packer 820 sets up between every two adjacent oil reservoirs to this protects oil reservoir temperature measurement subassembly 710 and the oil reservoir pressure measurement subassembly 720 that all the other every oil reservoirs correspond accurate, normal work, so sets up, when improving equipment life, has guaranteed the accurate degree of every heater of controller 300 control to the heating temperature who carries the steam of every oil reservoir.
In one embodiment of the present invention, as shown in fig. 1, the layered steam injection heating system further comprises: the sealer 900, the sealer 900 is set up at the oil well mouth; the controller 300 is disposed outside the steam injection pipe 100, and the oil layer information detecting assembly 700 is disposed through the sealer 900 and connected to the controller 300.
In this embodiment, the layered steam injection heating system is further provided with a sealer 900, the sealer 900 is located at an oil well, the controller 300 is arranged outside the steam injection pipe 100, the oil layer information detection assembly 700 is arranged in the sealer 900 in a penetrating manner and connected to the controller 300, the controller 300 is protected, damage to the controller 300 caused by steam return is avoided, the service life of the equipment is prolonged, and the working stability of the controller 300 is also ensured.
In the description of the present invention, the terms "plurality" or "a plurality" refer to two or more, and unless otherwise specifically limited, the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. 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 the description of the present invention, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In the present invention, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (11)
1. A layered steam injection heating system, comprising:
a steam injection pipe;
the heating device comprises a plurality of heating pipes, the heating pipes are arranged in the steam injection pipe, the heating pipes are arranged along the height direction of the steam injection pipe, and the heating pipes are different in length;
a controller for controlling heating temperatures of the plurality of heating tubes.
2. The layered steam injection heating system of claim 1, wherein the heating device comprises:
a plurality of cables, each of the heating pipes being connected to each of the heating pipe controllers by at least one of the cables.
3. The layered steam injection heating system of claim 2, wherein the heating device further comprises:
a housing;
an insulator disposed between the plurality of heating tubes and the housing;
and the sealing cover is connected to the end surface of the shell.
4. The layered steam injection heating system of claim 1, further comprising:
the sleeve is sleeved on the steam injection pipe;
the steam injection pipes are used for penetrating through the oil layers, each sieve pipe is sleeved on the steam injection pipe and positioned between the oil layer and the steam injection pipe, and the setting number of the sieve pipes is matched with the number of the oil layers;
wherein, each oil layer corresponds to at least one heating pipe.
5. The layered steam injection heating system of claim 4, further comprising: a dispensing assembly, the dispensing assembly comprising:
the distribution valve is connected to the bottom of the steam injection pipe;
and the pressure guide pipe is arranged in the steam injection pipe, one end of the pressure guide pipe is connected to the distribution valve, and the other end of the pressure guide pipe is arranged in an oil layer.
6. The layered steam injection heating system of claim 4, further comprising:
and the oil layer information detection assembly is arranged between the sleeve and the steam injection pipe.
7. The layered steam injection heating system of claim 6, wherein the reservoir information detection component comprises: oil reservoir temperature measurement subassembly, oil reservoir temperature measurement subassembly includes:
protecting the tube;
the temperature measuring line is arranged in the first protection pipe and is connected to the controller;
the temperature sensor is connected to the temperature measuring line and used for detecting the temperature of the oil layer;
wherein, at least one temperature sensor is arranged in each oil layer.
8. The layered steam injection heating system of claim 6, wherein the reservoir information detection assembly further comprises: a reservoir pressure cell assembly, the reservoir pressure cell assembly comprising:
the pressure transmitting joint is connected to the controller; the pressure transmission pipe is connected to the pressure transmission joint and is used for transmitting a pressure signal of the oil layer; wherein, be provided with at least one in each oil reservoir and pass the pressure pipe.
9. The layered steam injection heating system of claim 6, further comprising:
and the packing assembly is arranged between the sleeve and the steam injection pipe, and the oil layer information detection assembly penetrates through the packing assembly.
10. The layered steam injection heating system of claim 9, wherein the pack-off assembly comprises:
a first packer disposed between a wellhead and the formation;
a plurality of second packers disposed between a plurality of the adjacent oil zones.
11. The reservoir thermometry assembly of claim 9, further comprising:
a sealer disposed at the wellhead;
the controller is arranged outside the steam injection pipe, and the oil layer information detection assembly is arranged in the sealer in a penetrating mode and connected to the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110773361.XA CN115596417A (en) | 2021-07-08 | 2021-07-08 | Layered steam injection heating system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110773361.XA CN115596417A (en) | 2021-07-08 | 2021-07-08 | Layered steam injection heating system |
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| CN115596417A true CN115596417A (en) | 2023-01-13 |
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| CN202110773361.XA Pending CN115596417A (en) | 2021-07-08 | 2021-07-08 | Layered steam injection heating system |
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|---|---|
| CN (1) | CN115596417A (en) |
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| CN111322045A (en) * | 2020-03-03 | 2020-06-23 | 西南石油大学 | Method for improving steam dryness at bottom of deep well heavy oil well by electric heating |
| CN213597941U (en) * | 2020-04-15 | 2021-07-02 | 中国石油天然气股份有限公司 | Downhole steam heating device and steam injection pipe column |
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| CN2585975Y (en) * | 2002-11-22 | 2003-11-12 | 中国石油天然气股份有限公司 | Stratified steady and constant steam filler of oil well |
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