CN111878030B - Oil extraction construction method for stabilizing oil and controlling water and monitoring underground fluid in real time - Google Patents
Oil extraction construction method for stabilizing oil and controlling water and monitoring underground fluid in real time Download PDFInfo
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- CN111878030B CN111878030B CN202010928926.2A CN202010928926A CN111878030B CN 111878030 B CN111878030 B CN 111878030B CN 202010928926 A CN202010928926 A CN 202010928926A CN 111878030 B CN111878030 B CN 111878030B
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/127—Packers; Plugs with inflatable sleeve
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
Abstract
The invention relates to an oil extraction construction method for stabilizing oil and controlling water and monitoring underground fluid in real time, which comprises the following steps: determining a layering scheme, and putting a guide device, an oil pipe, an underground oil drainer, an adjusting pipe column and a plurality of recoverable liquid-encountering expansion packers which are sequentially connected from the underground to the above-ground direction, wherein the recoverable liquid-encountering expansion packers of each production interval are sequentially connected with a safety joint, an injection nipple and an underground fluid automatic control device towards the above-ground direction; lowering the suspended packer to a preset depth, setting and releasing the suspended packer, and taking out and sending the suspended packer into a tubular column; putting an optical cable, and assembling a production string of the suction pump in the shaft, wherein the optical cable is fixed at the tubing coupling and the body step by step; connecting the oil pipe to a wellhead, penetrating the optical cable through the wellhead, self-sealing, installing a sealing assembly, fixing the optical cable, and connecting the optical cable with a ground optical fiber demodulator; the invention can master the working state of the oil production pipe column and the condition of the stratum output in real time.
Description
Technical Field
The invention belongs to the technical field of layered oil extraction in oil field exploration and development, and particularly relates to an oil extraction construction method for real-time monitoring of oil stabilization, water control and downhole fluid.
Background
In the exploration and development process of an oil field, a scientific and effective monitoring means is adopted to monitor the oil production string, so that flooding can be effectively controlled, gas channeling can be prevented, the crude oil recovery rate is further improved, and water control and oil increase are important work for oil-gas field development. Various technical means generally adopted at home and abroad are analyzed, and in the field of 'automatic underground fluid separate mining', separate mining measures and monitoring means adopted by each country are different according to the characteristics of each oil field. The main technical means adopted at home and abroad is to realize the purpose of layered oil extraction by means of separate extraction. The Norwegian oil company and the Harlibton oil company implement 'AICD automatic water control layered oil extraction' in foreign oil field research, and meanwhile, implement a 'DTS distributed underground optical fiber permanent monitoring' method for high-yield oil wells or key test wells; in China, measures such as oil pipe double-sealing water plugging, underground electric control valve control separate production and the like are mainly adopted, the methods have differences in the aspects of effect, cost, advancement, adaptability and the like, and in view of the technical current situation of domestic oil field development, various processes are implemented singly, and real-time monitoring of underground pipe columns and fluids cannot be realized. And for whether the packer between layers leaks or not, whether each water control valve works normally or not, the integrity of the oil production string, the evaluation of the measure effect and the like, accurate analysis and judgment cannot be made due to the lack of effective monitoring means.
Therefore, based on the problems, the oil extraction construction method for stabilizing oil and controlling water and monitoring the underground fluid in real time, which combines the automatic control balance extraction of the underground fluid and the optical fiber monitoring integrated technology, can master the working state of the oil extraction pipe column and the condition of the stratum output in real time, provides technical support for the construction of the digital oil field, and has important practical significance.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an oil extraction construction method for stabilizing oil and controlling water and monitoring underground fluid in real time, which combines the automatic control, balance and separate extraction of underground fluid and an optical fiber monitoring integrated technology, can master the working state of an oil extraction pipe column and the condition of stratum output in real time and provides technical support for the construction of a digital oil field.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
the oil extraction construction method for stabilizing oil and controlling water and monitoring underground fluid in real time comprises the following steps:
carrying out geological analysis on an oil well, determining a layering scheme according to well history, layering liquid and productivity, and selecting a matched underground fluid automatic control device and a recoverable liquid swelling packer;
the method comprises the following steps of performing field operation, namely, descending a guide device, an oil pipe, an underground oil drainer, an adjusting pipe column and a plurality of recoverable liquid-encountering expansion packers for carrying out interval production intervals from the underground to the aboveground direction, wherein the recoverable liquid-encountering expansion packers of all production intervals are sequentially connected with a safety joint, an injection nipple and an underground fluid automatic control device towards the aboveground direction; lowering the suspended packer to a predetermined depth; depth correction, namely adjusting the suspended packer to the underground fluid automatic control device of the uppermost production interval; throwing a ball on the ground, pressing in the oil pipe to set and release the suspended packer, and then taking out and sending the packer into the pipe column; the ground is connected with a guide head, a weighting rod, a centralizer, a P-T optical fiber sensor and a cable head, an optical cable is put in, a production string of the suction pump is assembled in the shaft, and the optical cable is fixed at the oil pipe coupling and the body step by step; connecting the oil pipe to a wellhead, reserving 5-10 m of allowance for the optical cable, and cutting off the optical cable; installing a penetrable wellhead self-sealing, penetrating an optical cable through the wellhead self-sealing, installing a sealing assembly, fixing the optical cable, and connecting the optical cable with a ground optical fiber demodulator; setting and sealing a well mouth for self-sealing, assembling a pump core and a sucker rod, and pumping;
and data acquisition and analysis, namely accurately mastering the output conditions of all layers and intervals and the working states of the underground pipe column and the tool in real time according to DTS distributed optical fiber temperature measurement data which is uploaded to the ground underground.
Furthermore, the recoverable liquid-encountering expansion packer of the production interval at the lowest end is sequentially connected with an underground fluid automatic control device, an injection nipple and a safety joint towards the underground direction, and the safety joint is connected to an adjusting pipe column.
Furthermore, install one-way gas injection valve on the injection nipple joint, can make the inside high-pressure gas of oil pipe pass this injection nipple joint and reach the oil pipe outside, get into the reservoir, and outside liquid of oil pipe or gas then can't get into inside the oil pipe through this injection nipple joint.
Furthermore, the length of descending the optical cable is the distance from the oil drain to the bell mouth of the pumping pipe column.
Further, the optical cable enters the interior of the oil pipe through the hanging packer under the action of the balance weight, and is suspended and distributed in the interior of the whole layered water-control oil production pipe column.
Further, the guiding device can adopt a sealing plug.
The invention has the advantages and positive effects that:
1. the invention combines the underground fluid automatic control balance separate production and optical fiber monitoring integrated technology, and the optical fiber cable is bound outside the production pipe column of the suction pump at the upper part; the optical cable enters the interior of the oil pipe through the suspension packer under the action of the counterweight, so that the optical cable is suspended and distributed in the interior of the whole layered water-control oil production pipe column; the optical fiber cable is distributed in each production interval, distributed temperature change information of each interval is sensed in real time, distributed temperature change signals are uploaded to the ground along the optical fiber cable, a ground demodulation instrument acquires changes of underground distributed temperatures in real time to form a three-dimensional depth-temperature-time curve diagram, the integrity of an underground pipe column is analyzed through system analysis of distributed temperature change data of each layer, each interval, each underground fluid automatic control device, each packer and the like on the three-dimensional curve diagram, and the output of each layer and each interval, the working condition of each underground fluid automatic control device and the packing effect of each packer are accurately mastered.
2. According to the invention, the packer sealing and separate production is carried out on each production interval when encountering liquid, and the downhole fluid automatic control device with corresponding specification is arranged between the packers, so that the liquid production capacity of a high-yield water layer is effectively limited; for a medium water flooded layer with both oil and water, a method of controlling water and increasing oil is adopted to control the output of water and release the output of oil; for the low-pressure production layer, according to the liquid production property, the productivity of the low-pressure production layer is released, the water production is limited, the crude oil production is released, and the purposes of controlling water, increasing oil and increasing the yield are achieved.
Drawings
The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and examples, but it should be understood that these drawings are designed for illustrative purposes only and thus do not limit the scope of the present invention. Furthermore, unless otherwise indicated, the drawings are intended to be illustrative of the structural configurations described herein and are not necessarily drawn to scale.
FIG. 1 is a schematic diagram of a downhole structural connection of an oil recovery construction method for real-time monitoring of oil stabilization, water control and downhole fluid provided in an embodiment of the present invention;
Detailed Description
First, it should be noted that the specific structures, features, advantages, etc. of the present invention will be specifically described below by way of example, but all the descriptions are for illustrative purposes only and should not be construed as limiting the present invention in any way. Furthermore, any single feature described or implicit in any embodiment or any single feature shown or implicit in any drawing may still be combined or subtracted between any of the features (or equivalents thereof) to obtain still further embodiments of the invention that may not be directly mentioned herein. In addition, for the sake of simplicity, the same or similar features may be labeled only in one place in the same drawing.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The present invention will be specifically described with reference to fig. 1.
The oil extraction construction method for oil stabilization, water control and downhole fluid real-time monitoring provided by the embodiment is characterized in that: the method comprises the following steps:
carrying out geological analysis on an oil well, determining a layering scheme according to well history, layering liquid and productivity, and selecting a matched underground fluid automatic control device and a recoverable liquid swelling packer;
carrying out construction design and optimizing the construction process;
in the field operation, a guiding device 7, an oil pipe, an underground oil drainer 6, an adjusting pipe column and a plurality of recoverable liquid-encountering expansion packers for carrying out interval production intervals are sequentially arranged from the underground to the aboveground direction, wherein the recoverable liquid-encountering expansion packer 5 of each production interval is sequentially connected with a safety joint 4, an injection nipple 3 and an underground fluid automatic control device in the aboveground direction; lowering the suspended packer 1 to a predetermined depth; depth correction, namely adjusting the suspended packer to the position of the underground fluid automatic control device 2 of the uppermost production interval; throwing a ball on the ground, pressing in the oil pipe to set and release the suspended packer, and then taking out and sending the packer into the pipe column; the ground is connected with a guide head, a weighting rod, a centralizer, a P-T optical fiber sensor and a cable head, an optical cable is put in, a production string of the suction pump is assembled in the shaft, and the optical cable is fixed at the oil pipe coupling and the body step by step; connecting the oil pipe to a wellhead, reserving 5-10 m of allowance for the optical cable, and cutting off the optical cable; installing a penetrable wellhead self-sealing, penetrating an optical cable through the wellhead self-sealing, installing a sealing assembly, fixing the optical cable, and connecting the optical cable with a ground optical fiber demodulator; setting and sealing a well mouth for self-sealing, assembling a pump core and a sucker rod, and pumping;
and data acquisition and analysis, namely accurately mastering the output conditions of all layers and intervals and the working states of the underground pipe column and the tool in real time according to DTS distributed optical fiber temperature measurement data which is uploaded to the ground underground.
It should be noted that the injection nipple is connected between two recoverable liquid swelling packers and is placed at the position of the perforation layer. The nipple body is provided with a one-way gas injection valve which has the function of one-way injection, namely high-pressure gas inside the oil pipe can pass through the nipple to reach the outside of the oil pipe and enter a production zone, and liquid or gas outside the oil pipe cannot enter the inside of the oil pipe through the nipple;
specifically, the recoverable liquid-encountering expansion packer of the production interval at the lowest end is sequentially connected with an underground fluid automatic control device, an injection nipple and a safety joint towards the underground direction, and the safety joint is connected to an adjusting pipe column.
The length of optical cable transfer is by the distance of bleeder to pumping tubular column bell mouth, when going into the optical cable down, under the counter weight effect, gets into inside the oil pipe through hanging packer, hangs, distributes in the inside of whole layering accuse water oil production tubular column.
In this embodiment, the guiding device may be a sealing plug.
According to the oil pipe, gas injected into the oil pipe is pushed by high pressure, and can smoothly enter a production layer; inside oil pipe can be entered into to the outside crude oil of oil pipe, inside water and gas can't enter into oil pipe, remain inside the reservoir stratum and play fine effect of maintaining reservoir pressure, this technique has reduced the waste of manpower and materials, has improved the displacement of reservoir oil efficiency, has reduced air pollution, has eliminated the potential safety hazard. By adopting the technology, the potential safety hazards such as air pollution, gas flash explosion and the like caused by ground blowout prevention can be eliminated to the maximum extent, the compressed gas is kept in the reservoir, the utilization efficiency of the compressed air is effectively improved, the crude oil recovery rate is improved, and the oil displacement benefit is greatly increased;
in addition, the invention combines the underground fluid automatic control balance separate mining and optical fiber monitoring integrated technology, and the optical fiber cable is bound outside the production pipe column of the suction pump at the upper part; the optical cable enters the interior of the oil pipe through the suspension packer under the action of the counterweight, so that the optical cable is suspended and distributed in the interior of the whole layered water-control oil production pipe column; the optical fiber cable is distributed in each production interval, distributed temperature change information of each interval is sensed in real time, distributed temperature change signals are uploaded to the ground along the optical fiber cable, a ground demodulation instrument acquires changes of underground distributed temperatures in real time to form a three-dimensional depth-temperature-time curve diagram, the integrity of an underground pipe column is analyzed through system analysis of distributed temperature change data of each layer, each interval, each underground fluid automatic control device, each packer and the like on the three-dimensional curve diagram, and the output of each layer and each interval, the working condition of each underground fluid automatic control device and the packing effect of each packer are accurately mastered.
Specifically, the method implements the packer packing and separate production of each production interval when encountering liquid and self-expanding, and installs the underground fluid automatic control device with corresponding specification between the packers, thereby effectively limiting the liquid production capacity of the high-yield water layer; for a medium water flooded layer with both oil and water, a method of controlling water and increasing oil is adopted to control the output of water and release the output of oil; for the low-pressure production layer, according to the liquid production property, the productivity of the low-pressure production layer is released, the water production is limited, the crude oil production is released, and the purposes of controlling water, increasing oil and increasing the yield are achieved.
The present invention has been described in detail with reference to the above examples, but the description is only for the preferred examples of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (4)
1. The oil extraction construction method for stabilizing oil and controlling water and monitoring underground fluid in real time is characterized by comprising the following steps of: the method comprises the following steps:
carrying out geological analysis on an oil well, determining a layering scheme according to well history, layering liquid and productivity, and selecting a matched underground fluid automatic control device and a recoverable liquid swelling packer;
the method comprises the following steps of performing field operation, namely, descending a guide device, an oil pipe, an underground oil drainer, an adjusting pipe column and a plurality of recoverable liquid-encountering expansion packers for carrying out interval production intervals from the underground to the aboveground direction, wherein the recoverable liquid-encountering expansion packers of all production intervals are sequentially connected with a safety joint, an injection nipple and an underground fluid automatic control device towards the aboveground direction; lowering the suspended packer to a predetermined depth; depth correction, namely adjusting the suspended packer to the underground fluid automatic control device of the uppermost production interval; throwing a ball on the ground, pressing in the oil pipe to set and release the suspended packer, and then taking out and sending the packer into the pipe column; the ground is connected with a guide head, a weighting rod, a centralizer, a P-T optical fiber sensor and a cable head, an optical cable is put in, a production pipe column of the suction pump is assembled in a shaft, the upper part of the optical cable is bound outside the production pipe column of the suction pump, and the optical cable is fixed at the oil pipe coupling and the body step by step; connecting the oil pipe to a wellhead, reserving 5-10 m of allowance for the optical cable, and cutting off the optical cable; installing a penetrable wellhead self-seal, and penetrating the optical cable through the wellhead self-seal; the lower part of the optical cable enters the interior of an oil pipe through a suspension packer under the action of a balance weight, so that the optical cable is suspended and distributed in the interior of the whole layered water-control oil production pipe column, a sealing assembly is installed, the optical cable is fixed, and the optical cable is connected with a ground optical fiber demodulator; setting and sealing a well mouth for self-sealing, assembling a pump core and a sucker rod, and pumping; the injection nipple is provided with a one-way injection valve, so that high-pressure gas inside the oil pipe can pass through the injection nipple to reach the outside of the oil pipe and enter a production zone, and liquid or gas outside the oil pipe cannot enter the inside of the oil pipe through the injection nipple;
the data acquisition and analysis, the optical fiber cable distributes in each production interval, senses the distributed temperature change information of each interval in real time, the distributed temperature change signal is uploaded to the ground along the optical cable, the ground demodulator acquires the change of the underground distributed temperature in real time to form a three-dimensional depth-temperature-time curve diagram, and the output condition of each layer and interval and the working state of the underground pipe column and tools are accurately mastered in real time.
2. The oil recovery construction method for stabilizing oil and controlling water and monitoring downhole fluid in real time according to claim 1, characterized in that: the recoverable liquid-swelling packer at the production interval at the lowest end is sequentially connected with an underground fluid automatic control device, an injection nipple and a safety joint towards the underground direction, and the safety joint is connected to an adjusting pipe column.
3. The oil recovery construction method for stabilizing oil and controlling water and monitoring downhole fluid in real time according to claim 1, characterized in that: the length of descending of the optical cable is the distance from the oil drain to the bell mouth of the production pipe column of the suction pump.
4. The oil recovery construction method for stabilizing oil and controlling water and monitoring downhole fluid in real time according to claim 1, characterized in that: the guide device adopts a sealing plug.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110541702A (en) * | 2019-10-14 | 2019-12-06 | 中油奥博(成都)科技有限公司 | underground fluid distribution monitoring system and method based on distributed optical fiber sensing |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2711628C (en) * | 2009-07-27 | 2017-01-24 | Innovative Steam Technologies Inc. | System and method for enhanced oil recovery with a once-through steam generator |
| CN205936588U (en) * | 2016-07-29 | 2017-02-08 | 东营市世创石油技术有限公司 | Annotate fixed profile fiber temperature measurement technology tubular column of vapour well |
| CN110344815B (en) * | 2019-07-16 | 2023-05-12 | 中国石油大学(华东) | Production profile monitoring method based on distributed optical fiber sound monitoring and distributed optical fiber temperature monitoring |
| CN110965967A (en) * | 2019-12-16 | 2020-04-07 | 中国石油集团渤海钻探工程有限公司 | Downhole fluid automatic control and water blocking integrated layered oil production pipe column and oil production method |
| CN211422632U (en) * | 2020-01-07 | 2020-09-04 | 国兴汇金(深圳)科技有限公司 | Distributed temperature real-time monitoring device for oil and gas well |
| CN111622707A (en) * | 2020-06-11 | 2020-09-04 | 中国石油集团渤海钻探工程有限公司 | Balanced injection and balanced oil extraction integrated injection-production string |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110541702A (en) * | 2019-10-14 | 2019-12-06 | 中油奥博(成都)科技有限公司 | underground fluid distribution monitoring system and method based on distributed optical fiber sensing |
Non-Patent Citations (3)
| Title |
|---|
| 光纤油井压力温度监测系统;吕京生等;《山东科学》;20081231;第21卷(第06期);第37-39,71页 * |
| 分布式光纤传感技术在管道监测中的应用研究;何弼;《管道技术与设备》;20170131(第01期);第9-12页 * |
| 水下油气生产系统技术及基础设备发展与研究;宋琳等;《海洋开发与管理》;20130630(第06期);第91-95页 * |
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