CN114016983A - Oil field injection-production ratio accurate control steam injection pipeline and steam injection process - Google Patents
Oil field injection-production ratio accurate control steam injection pipeline and steam injection process Download PDFInfo
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- CN114016983A CN114016983A CN202111325450.4A CN202111325450A CN114016983A CN 114016983 A CN114016983 A CN 114016983A CN 202111325450 A CN202111325450 A CN 202111325450A CN 114016983 A CN114016983 A CN 114016983A
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- steam injection
- well
- oil
- steam
- boiler
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- 238000010793 Steam injection (oil industry) Methods 0.000 title claims abstract description 87
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000000605 extraction Methods 0.000 claims abstract description 13
- 238000012544 monitoring process Methods 0.000 claims abstract description 4
- 238000011084 recovery Methods 0.000 claims description 8
- 230000035699 permeability Effects 0.000 claims description 4
- 238000010276 construction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000000725 suspension Substances 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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- 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)
- Pipeline Systems (AREA)
Abstract
The invention discloses a steam injection pipeline and a steam injection process for accurately controlling an oil field steam injection-production ratio, and relates to the technical field of oil field steam injection and oil production; the steam injection pipeline comprises a movable boiler and a steam injection pipeline, wherein the movable boiler is communicated with an oil extraction well head through the steam injection pipeline, a single-well steam metering device is arranged at one end, close to the oil extraction well head, of the steam injection pipeline, and a total steam metering device is arranged at one end, close to the movable boiler, of the steam injection pipeline; a signal tower is arranged on one side of the mobile boiler and is in signal connection with a management base, and office facilities such as a server, a monitoring display and the like are arranged in the management base. The steam injection process based on the steam injection pipeline reduces the difference degree of the steam injection well conditions every time and reduces the management difficulty.
Description
Technical Field
The invention relates to the technical field of oil extraction by steam injection in an oil field, in particular to a steam injection pipeline and a steam injection process for accurately controlling an oil injection-production ratio in the oil field.
Background
In the prior art, a fixed boiler is adopted and is connected to surrounding well heads through steam injection pipelines. There are the following problems:
firstly, during each batch of steam injection, the number of wells is large, the length difference of pipelines connected to a boiler of each well is large, and the heat loss difference caused by heat dissipation along the way is large; secondly, the difference of well conditions such as the permeability of oil layers of each well is large, so that when steam is injected, part of oil layers of the wells excessively inject steam. And the steam injection of part of wells is insufficient. The differences of the required soaking time, oil pumping time, water content and the like are larger when subsequent oil extraction is carried out. Is not easy to manage; thirdly, as the general steam injection is adopted during steam injection, each well cannot perform accurate steam injection, so that the later-stage well condition difference is larger, and the management difficulty is higher; fourthly, if each well is provided with a steam flowmeter, the cost investment is too large. Even if the device is installed, the actual temperature and steam flow of each well are different, so that the device is difficult to manage and control, and a subsequent guiding process cannot be formed.
Disclosure of Invention
The invention aims to provide a steam injection pipeline and a steam injection process for accurately controlling the injection-production ratio of an oil field, which aim to solve the problems in the prior art.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a steam injection pipeline for accurately controlling an injection-production ratio of an oil field, which comprises a movable boiler and a steam injection pipeline, wherein the movable boiler is communicated with an oil extraction well head through the steam injection pipeline; the signal tower is arranged on one side of the movable boiler, the signal tower is in signal connection with a management base which is fixedly arranged on an oil extraction site and does not need to be moved generally, office facilities such as a server and a monitoring display are arranged in the management base, the signal tower transmits signals with peripheral signal towers in a relay mode instead of being connected with each signal tower through a satellite, and therefore signal transmission influence caused by severe weather is avoided. And the field construction difficulty is reduced without the real object modes such as network cables, optical fibers and the like.
Optionally, a polished rod eye indicator is arranged at the oil production well mouth, the liquid output of each well after steam injection is measured, and the polished rod eye indicator can transmit signals to a signal tower located on one side of the movable boiler through a transmitter.
The invention also provides an oil field injection-production ratio accurate control steam injection process, which comprises the following steps:
when only one oil production well is injected during steam injection, the steam injection amount consumed by a single well is equal to the total steam injection amount at the end of the movable boiler;
and when 2-3 oil production wells are injected each time, selecting the oil production wells with the same permeability, arranging the movable boiler at the positions with the same length of the steam injection pipelines to the oil production well mouths, avoiding large and uneven steam injection quantity difference between wells, and evenly distributing the total steam injection quantity at the movable boiler end to each oil production well.
Optionally, when the total steam metering device and the single-well steam metering device are arranged: measuring the steam injection quantity of each oil production well every time as the steam injection quantity of a wellhead; and acquiring the total steam injection quantity at the mobile boiler end, consuming the steam injection quantity by a single well, and distributing the total steam injection quantity of the mobile boiler end to each oil production well according to the proportion of the steam injection quantity of each wellhead.
Compared with the prior art, the invention has the following technical effects:
the invention reduces the difference degree of the steam injection well conditions each time and reduces the management difficulty. The steam flow value taking cost is reduced, the mastering degree of the injection-production ratio of the oil well is improved, accurate steam injection is realized, and the subsequent guidance process standardization such as well stewing, oil extraction and the like is promoted.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic diagram of the arrangement of steam injection pipelines for accurately controlling the injection-production ratio of an oil field;
wherein, 1 is a movable boiler, 2 is a steam injection pipeline, 3 is an oil extraction well mouth, 4 is a single well steam metering device, 5 is a total steam metering device, 6 is a signal tower, 7 is a management base, 8 is a suspension indicator and 9 is an emitter.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a steam injection pipeline and a steam injection process for accurately controlling the injection-production ratio of an oil field, which aim to solve the problems in the prior art.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to the attached drawing 1, the invention provides a steam injection pipeline for accurately controlling an injection-production ratio of an oil field, which comprises a movable boiler 1 and a steam injection pipeline 2, wherein the movable boiler 1 is communicated with an oil extraction well head 3 through the steam injection pipeline 2, one end of the steam injection pipeline 2, which is close to the oil extraction well head 3, is provided with a single-well steam metering device 4, one end of the steam injection pipeline 2, which is close to the movable boiler 1, is provided with a total steam metering device 5, and the single-well steam metering device 4 and the total steam metering device 5 are respectively connected with a signal tower through signals; a signal tower 6 is arranged on one side of the mobile boiler 1, the signal tower 6 is in signal connection with the signal tower 6 at a management base 7, the management base 7 is fixedly arranged on an oil extraction site, generally, movement is not needed, office facilities such as a server and a monitoring display are arranged inside the management base, the signal tower 6 transmits signals with the peripheral signal towers 6 in a relay mode, and the signal towers are not in contact with the signal towers 6 through satellites, so that signal transmission influence caused by severe weather and the like is avoided. And the field construction difficulty is reduced without the real object modes such as network cables, optical fibers and the like. A rope hanger indicator 8 is arranged at the position of an oil production well, the liquid outlet amount, the humidity and the pressure of each well after steam injection are measured, and the rope hanger indicator 8 can transmit signals to a signal tower 6 located on one side of the movable boiler 1 through a transmitter 9.
The invention also provides an oil field injection-production ratio accurate control steam injection process, which comprises the following steps:
when only one oil production well is injected during steam injection, the steam injection amount consumed by a single well is equal to the total steam injection amount at the 1 end of the movable boiler;
when annotating 2-3 oil recovery wells at every turn, if do not set up total steam metering device 5 and single well steam metering device 4, select the oil recovery well that the permeability is the same, will move boiler 1 and set up in the equal position department of steam injection pipeline 2 length to each oil recovery well head, avoid the steam injection volume difference between the well big, inhomogeneous, will move 1 end total steam injection volume average allocation of boiler to each oil recovery well, when being provided with total steam metering device 5 and single well steam metering device 4: measuring the steam injection quantity of each oil production well every time as the steam injection quantity of a wellhead; and acquiring the total steam injection quantity at the 1 end of the movable boiler, consuming the steam injection quantity by a single well, and distributing the total steam injection quantity at the 1 end of the movable boiler to each oil production well according to the proportion of the steam injection quantity at each well mouth.
In the description of the present invention, it should be noted that the terms "center", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (4)
1. The utility model provides an accurate management and control of oil field injection-production ratio annotates vapour pipeline which characterized in that: the system comprises a mobile boiler and a steam injection pipeline, wherein the mobile boiler is communicated with an oil extraction well head through the steam injection pipeline, a single-well steam metering device is arranged at one end, close to the oil extraction well head, of the steam injection pipeline, and a total steam metering device is arranged at one end, close to the mobile boiler, of the steam injection pipeline; a signal tower is arranged on one side of the mobile boiler and is in signal connection with a management base, and office facilities such as a server, a monitoring display and the like are arranged in the management base.
2. The oil field injection-production ratio accurate management and control steam injection pipeline of claim 1, characterized in that: and a polished rod eye indicator is arranged at the oil production well opening and can transmit signals to a signal tower positioned on one side of the movable boiler through a transmitter.
3. The oil field injection-production ratio accurate control steam injection process is characterized in that: the method comprises the following steps:
when only one oil production well is injected during steam injection, the steam injection amount consumed by a single well is equal to the total steam injection amount at the end of the movable boiler;
and selecting the oil recovery wells with the same permeability when injecting 2-3 oil recovery wells each time, arranging the movable boiler at the positions with the same length of the steam injection pipelines of the oil recovery well mouths, and evenly distributing the total steam injection quantity of the movable boiler end to each oil recovery well.
4. The oilfield steam injection and production ratio accurate management and control steam injection process according to claim 3, characterized in that: when being provided with total steam metering device and single well steam metering device: measuring the steam injection quantity of each oil production well every time as the steam injection quantity of a wellhead; and acquiring the total steam injection quantity at the mobile boiler end, consuming the steam injection quantity by a single well, and distributing the total steam injection quantity of the mobile boiler end to each oil production well according to the proportion of the steam injection quantity of each wellhead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111325450.4A CN114016983A (en) | 2021-11-10 | 2021-11-10 | Oil field injection-production ratio accurate control steam injection pipeline and steam injection process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111325450.4A CN114016983A (en) | 2021-11-10 | 2021-11-10 | Oil field injection-production ratio accurate control steam injection pipeline and steam injection process |
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| Publication Number | Publication Date |
|---|---|
| CN114016983A true CN114016983A (en) | 2022-02-08 |
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| CN202111325450.4A Pending CN114016983A (en) | 2021-11-10 | 2021-11-10 | Oil field injection-production ratio accurate control steam injection pipeline and steam injection process |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101033683A (en) * | 2006-03-09 | 2007-09-12 | 秦文韬 | Stem-injection technique for oil recovery by heat |
| WO2014114275A2 (en) * | 2013-01-23 | 2014-07-31 | Yu wen-ying | Two important methods for enhancing steam injection effect |
| CN106194137A (en) * | 2016-08-30 | 2016-12-07 | 北京大漠石油工程技术有限公司 | A kind of based on steam injection allocation and the gathering and transporting device of oil gas metering |
| CN207499859U (en) * | 2017-11-10 | 2018-06-15 | 中国石油集团渤海石油装备制造有限公司 | A kind of mass dryness fractions distributors such as uphole steam generator steam multistage mixed phase |
| CN111535798A (en) * | 2020-06-19 | 2020-08-14 | 四川奥达测控装置有限公司 | Steam metering system and metering method |
| CN112944312A (en) * | 2021-03-12 | 2021-06-11 | 克拉玛依胜利高原机械有限公司 | Water vapor heat exchange system, movable steam injection boiler and steam injection method thereof |
-
2021
- 2021-11-10 CN CN202111325450.4A patent/CN114016983A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101033683A (en) * | 2006-03-09 | 2007-09-12 | 秦文韬 | Stem-injection technique for oil recovery by heat |
| WO2014114275A2 (en) * | 2013-01-23 | 2014-07-31 | Yu wen-ying | Two important methods for enhancing steam injection effect |
| CN106194137A (en) * | 2016-08-30 | 2016-12-07 | 北京大漠石油工程技术有限公司 | A kind of based on steam injection allocation and the gathering and transporting device of oil gas metering |
| CN207499859U (en) * | 2017-11-10 | 2018-06-15 | 中国石油集团渤海石油装备制造有限公司 | A kind of mass dryness fractions distributors such as uphole steam generator steam multistage mixed phase |
| CN111535798A (en) * | 2020-06-19 | 2020-08-14 | 四川奥达测控装置有限公司 | Steam metering system and metering method |
| CN112944312A (en) * | 2021-03-12 | 2021-06-11 | 克拉玛依胜利高原机械有限公司 | Water vapor heat exchange system, movable steam injection boiler and steam injection method thereof |
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