CN117267624B - Protection method for large-drop oil inlet pipeline of underground water-sealed stone cave oil depot - Google Patents
Protection method for large-drop oil inlet pipeline of underground water-sealed stone cave oil depot Download PDFInfo
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- CN117267624B CN117267624B CN202311552678.6A CN202311552678A CN117267624B CN 117267624 B CN117267624 B CN 117267624B CN 202311552678 A CN202311552678 A CN 202311552678A CN 117267624 B CN117267624 B CN 117267624B
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- pipeline
- vertical shaft
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000004575 stone Substances 0.000 title claims abstract description 9
- 239000003921 oil Substances 0.000 claims abstract description 131
- 230000000670 limiting effect Effects 0.000 claims abstract description 29
- 239000010779 crude oil Substances 0.000 claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 238000000926 separation method Methods 0.000 claims abstract description 12
- 238000010276 construction Methods 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 8
- 238000013461 design Methods 0.000 claims description 6
- 229910000278 bentonite Inorganic materials 0.000 claims description 5
- 239000000440 bentonite Substances 0.000 claims description 5
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- 239000003208 petroleum Substances 0.000 abstract description 6
- 238000009834 vaporization Methods 0.000 abstract description 4
- 230000008016 vaporization Effects 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008520 organization Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003373 anti-fouling effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G5/00—Storing fluids in natural or artificial cavities or chambers in the earth
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/028—Laying or reclaiming pipes on land, e.g. above the ground in the ground
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/06—Accessories therefor, e.g. anchors
- F16L1/11—Accessories therefor, e.g. anchors for the detection or protection of pipes in the ground
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
- F16L55/027—Throttle passages
- F16L55/02709—Throttle passages in the form of perforated plates
- F16L55/02718—Throttle passages in the form of perforated plates placed transversely
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/20—Arrangements or systems of devices for influencing or altering dynamic characteristics of the systems, e.g. for damping pulsations caused by opening or closing of valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The invention discloses a protection method of an oil inlet pipeline with large drop of an underground water seal stone cave oil depot, belonging to the technical field of petroleum storage; firstly, an oil inlet vertical shaft is excavated and communicated with an oil storage cavity; then determining the limit distance of liquid column separation under the oil inlet working condition in the oil inlet pipelineIntroducing buffer protection distanceAs the spacing standard for installing the flow limiting plate in the oil inlet vertical shaft; prefabricating an oil inlet pipeline to buffer and protect the distanceDividing and marking the length of an oil inlet pipeline for a distance standard, and installing a flow limiting plate at a pipeline marking point; an oil inlet pipeline is arranged in the oil inlet vertical shaft; the protection method of the invention avoids the phenomena of liquid column separation and crude oil vaporization caused by overlarge crude oil flow velocity difference in the oil inlet pipeline, and further eliminates pipeline vibration caused by cavitation and cavitation.
Description
Technical Field
The invention belongs to the technical field of petroleum storage, and relates to a protection method of an oil inlet pipeline with large drop of an underground water seal petroleum cave oil depot.
Background
The petroleum reservoir is built in a non-separated reservoir, and has two forms, namely a ground reservoir and an underground reservoir. Underground reserves have gradually become the main development form of petroleum reserves due to their remarkable advantages of being safer, economical and environment-friendly.
The underground water-sealed petroleum cave depot technology is a technology for manually excavating hard rock below the ground water level to form a cavity with a certain volume for storing petroleum products, and realizing sealed oil storage by controlling the ground water to flow into an oil depot from surrounding rock cracks through design. The underground water seal cave depot project mainly comprises a cave tank region, a water curtain roadway, a vertical shaft, a construction roadway and a connecting roadway. When the project construction is completed and the underground water-sealed oil storage is put into operation, the crude oil needs to be injected into an oil storage hole tank connected with the underground water-sealed oil storage hole tank through an oil inlet pipeline system built in a vertical shaft. Because the buried depth of the underground water seal cave depot is larger, the maximum drop is about hundred meters. The prior art method is that crude oil is directly and vertically injected into the bottom of an oil storage cavity from an oil inlet pipeline port, when oil is injected into a large-drop (the height is more than 100 meters) pipeline in large quantity, potential energy of fluid in the pipeline is far greater than consumption energy of pipeline resistance, the fluid energy is concentrated in large quantity, relevant energy dissipation means are needed to be adopted for processing the rest energy, and otherwise, a series of harmful complex flow phenomena can be generated in the large-drop oil inlet pipeline. The flow limiting orifice plate is one of widely used energy dissipaters in engineering, but cavitation is easy to occur in the orifice of the flow limiting orifice plate. Cavitation is a special flow phenomenon that occurs only in fluids. When liquid flows through the flow-limiting area at normal working temperature, the pressure is reduced due to the increase of the flow speed, and when the ambient pressure is lower than the saturated vapor pressure of the flowing medium at the temperature, the liquid is vaporized and rapidly expands and separates out in the form of small bubbles, so that the flow is changed into an unstable multiphase flow from the original single-phase flow, and the phenomenon is called hydrodynamic cavitation. Cavitation is often accompanied by "cavitation" in which when cavitation flows continue with bubbles to flow into an open flow field, the ambient pressure begins to recover, and when the pressure is higher than the saturated vapor pressure of the flowing medium in the environment, the bubbles rapidly collapse under pressure and release a large amount of energy, impacting the engineering structure causing severe vibration and damage to the pipe, a special phenomenon known as "cavitation". The oil inlet pipeline can be seriously damaged under the long-term action of cavitation erosion, and other equipment in the vertical shaft can be damaged by severe vibration. Therefore, the prior art method needs to be improved, a damage mechanism of the oil inlet mode to the pipeline is based on a high-drop oil inlet mode, and a new technical method is provided for protecting the oil inlet pipeline in the vertical shaft.
Disclosure of Invention
The invention overcomes the defects of the prior art and provides a protection method for an oil inlet pipeline with large drop of an underground water seal stone cave oil depot.
In order to achieve the above purpose, the present invention is realized by the following technical scheme.
A protection method for an oil inlet pipeline with large drop of an underground water seal stone cave oil depot comprises the following steps:
s1, excavating an oil inlet shaft according to a construction design, wherein the bottom of the oil inlet shaft is communicated with an oil storage cavity;
s2, carrying out large-drop oil transportation safety analysis on the oil inlet pipeline, and determining the limit distance of liquid column separation under the oil inlet working condition in the oil inlet pipeline through theoretical analysisIntroducing buffer protection distance->As the spacing standard for installing the flow limiting plate in the oil inlet vertical shaft;
s3, prefabricating an oil inlet pipeline to buffer and protect the distanceDividing and marking the length of an oil inlet pipeline for a distance standard, and installing a flow limiting plate at a pipeline marking point;
s4, installing an oil inlet pipeline at a preset position of an oil inlet vertical shaft, and connecting the bottom of the oil inlet pipeline with an oil storage cavity; and then pouring and backfilling sequentially from bottom to top, and finally sealing the vertical shaft.
Preferably, the oil inlet pipeline is subjected to large-drop oil transportation safety analysis by taking the pipeline safety transportation theory as a basis and combining the construction site conditions and the property of crude oil to be stored.
Preferably, the buffer protection distanceThe expression of (2) is: />；
In the method, in the process of the invention,the buffer protection distance is m; />For the limit distance of liquid column separation, singlyThe bit is m; />Is a safety coefficient and is dimensionless.
Preferably, the flow limiting plate is provided with a plurality of circular through holes penetrating through the plate body, the circular through holes are convergent through holes, and the ratio of the thickness of the flow limiting plate to the aperture of the circular through holes is L/d less than or equal to 2.
Preferably, the circle center of the circular through hole of the outer layer is connected with the circle center of the circular through hole of the inner layer, and the included angle between two adjacent connection lines is 45 degrees.
More preferably, the installation angles of any two adjacent flow limiting plates in the vertical direction of the oil inlet pipeline are different.
More preferably, the installation angles of the upper and lower adjacent flow limiting plates are different by 22.5 degrees.
Preferably, flow velocity sensors are respectively installed at the top, the middle and the bottom of the oil inlet pipeline and used for feeding back oil inlet flow velocity data in the oil inlet pipeline to a ground monitoring station in real time, inverting the crude oil state by utilizing the flow velocity data, judging whether a liquid column separation phenomenon occurs in the oil inlet pipeline, and monitoring and evaluating the oil inlet process and the current limiting effect.
Preferably, concrete sealing plugs and backfilling bentonite are sequentially poured along the outer wall of the oil inlet pipeline from bottom to top, and finally sealing of the oil inlet vertical shaft is carried out.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the operation risk of shaft facilities under the working condition of high-drop oil inlet of the underground water-sealed oil depot is considered, and the intrinsic cause of pipeline vibration is analyzed by applying the pipeline transportation theory. The protection method provided by the invention limits the flow velocity difference, innovates the material, shape, installation interval and installation angle of the flow limiting plate through theoretical analysis, can more efficiently avoid the phenomena of liquid column separation and crude oil vaporization caused by overlarge crude oil flow velocity difference in the oil inlet pipeline, and further eliminates pipeline vibration caused by cavitation and cavitation. The oil inlet pipeline and the equipment which are formed by one-time installation in the vertical shaft are protected, the maintenance cost of the equipment is reduced, certain economic benefits are achieved, and the long-term stable operation of the underground water seal cave depot is facilitated.
Drawings
FIG. 1 is a vertical shaft diagram of an underground water-sealed oil depot with an oil inlet pipeline buried therein;
FIG. 2 is a schematic view of an oil inlet pipe structure;
FIG. 3 is a schematic structural view of a restrictor plate;
FIG. 4 is a schematic side view of a restrictor plate;
FIG. 5 is a schematic view of the installation angle of the upper restrictor plate;
FIG. 6 is a schematic view showing the installation angle of the lower restrictor plate adjacent to the upper restrictor plate shown in FIG. 5.
Wherein, 1-an oil inlet vertical shaft; 2-an aqueous layer; 3-bentonite; 4-a concrete sealing plug; 5-an oil storage cavern; 6-an oil inlet pipeline; 7-a flow-limiting plate; 8-the outer wall of the oil inlet pipeline; 9-the inner wall of the oil inlet pipeline; 10-circular through holes.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail by combining the embodiments and the drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. The following describes the technical scheme of the present invention in detail with reference to examples and drawings, but the scope of protection is not limited thereto.
In the existing underground water seal cave depot engineering, the elevation of the bottom plate of the oil storage cave is-160 meters, the cross section span of the cave is 20 meters, and the height is 30 meters. Referring to fig. 1 to 6, the present embodiment provides a protection method for a large-drop oil inlet pipeline of an underground water-sealed stone cave oil depot, which includes the following steps:
s1, excavating a vertical shaft through smooth blasting according to construction organization design, and installing process vertical shaft equipment. The bottom of the oil inlet vertical shaft 1 is communicated with the oil storage cavity 5 according to design requirements, and the length of the oil inlet vertical shaft is 130 meters.
S2, based on a pipeline safe transportation theory, carrying out vertical large-drop oil transportation safety analysis on the oil inlet pipeline 6 by combining construction site conditions and the property of crude oil to be stored. The limit distance of liquid column separation under the oil inlet working condition in the oil inlet pipeline 6 is determined through theoretical analysis:introducing buffer protection distance->As a pitch standard for installing the restrictor plate 7 in the oil feed shaft 1 in step S3. />In the formula->For the safety factor, the dimensionless one is 0.85 in this example.
S3, prefabricating an oil inlet pipeline 6 on the ground, wherein the length of the oil inlet pipeline 6 is designed to be 155 meters. The oil inlet pipe 6 has an oil inlet pipe outer wall 8 and an oil inlet pipe inner wall 9 for buffering the protection distanceThe oil feed pipe 6 is length-divided and marked for the segmentation standard. A total of 15 segments, 15 mounting points marked. The restrictor plate 7 is mounted at different mounting angles at the marked points.
The flow limiting plate 7 arranged in the oil inlet pipeline 6 is made of corrosion-resistant high-strength materials, the outer surface of the plate body is thick and the inner surface of the plate body is thin, and the surface of the plate body is plated with a crude oil low-adhesion antifouling coating, so that crude oil accumulation and blockage and erosion impact damage to the flow limiting plate 7 are prevented. The flow limiting plate 7 is provided with a plurality of circular through holes 10 penetrating through the plate body, the hole shape is designed into a convergent through hole, the inclination angle is 60 degrees (see fig. 4), the ratio L/d of the thickness of the flow limiting plate 7 to the aperture is less than or equal to 2, the circle centers of the outer layer through holes and the circle centers of the inner layer through holes are connected, the included angle between the adjacent connecting lines is 45 degrees, and the included angle between the straight line OA and the OB is alpha=45 degrees as shown in fig. 3. And the flow limiting plate 7 is completely fixed with the pipe wall of the oil inlet pipe 6, so that the flow limiting plate 7 is prevented from moving (including translational movement and rotation) under the action of external force, and the flow limiting effect is prevented from being influenced.
In the step S3, the installation angles of any two adjacent flow limiting plates 7 in the vertical direction are different, as shown in fig. 5 and 6, the installation angles of the upper and lower flow limiting plates are different by 22.5 °, and the straight lines OA and OA are shown as follows 1 Included angle β=22.5°, straight line OA 1 With OB 1 The included angle is stillα=45°.
S4, installing an oil inlet pipeline 6 and other equipment at a preset position of the vertical shaft, and connecting the bottom of the oil inlet pipeline 6 with the bottom plate of the oil storage cavity 5. The top, middle and bottom of the oil inlet pipeline 6 are provided with flow velocity sensors, oil inlet flow velocity data are fed back to a ground monitoring station in real time, the crude oil state is inverted by using the flow velocity data, and whether the liquid column separation phenomenon (crude oil vaporization) occurs in the oil inlet pipeline 6 is judged. The oil inlet process and the flow limiting effect are monitored and evaluated, and the oil inlet scheme is adjusted in real time to prevent the pipeline from vibrating due to abnormal flow of crude oil. And then sequentially pouring a concrete sealing plug 4 and backfilling bentonite 3 along the outer wall of the oil inlet pipeline 6 from bottom to top according to construction organization design, wherein a water layer 2 is arranged above the bentonite 3. And finally, shaft sealing is carried out.
S5, after the construction of the water-sealed oil depot is completed, crude oil is conveyed to the oil storage cavity 5 through the oil inlet pipeline 6. The sectional flow limiting plates 7 reduce the flow velocity of the lower end and the difference between the velocity of the upper end and the velocity of the lower end of the vertical falling crude oil liquid column, avoid severe vibration caused by cavitation effect generated by liquid column separation (crude oil vaporization) of the pipeline, and protect the safe operation of the oil inlet pipeline 6 and other equipment in the vertical shaft.
While the invention has been described in detail in connection with specific preferred embodiments thereof, it is not to be construed as limited thereto, but rather as a result of a simple deduction or substitution by a person having ordinary skill in the art to which the invention pertains without departing from the scope of the invention defined by the appended claims.
Claims (3)
1. The protection method of the large-drop oil inlet pipeline of the underground water-sealed stone cave oil depot is characterized by comprising the following steps of:
s1, excavating an oil inlet vertical shaft (1) according to construction design, wherein the bottom of the oil inlet vertical shaft (1) is communicated with an oil storage cavity (5);
s2, based on a pipeline safe transportation theory, carrying out large-drop oil transportation safety analysis on an oil inlet pipeline (6) by combining construction site conditions and the property of crude oil to be stored, and carrying out theoretical analysisDetermining the limit distance of liquid column separation under the oil inlet working condition in an oil inlet pipeline (6)Introducing buffer protection distance->As a spacing standard for installing a flow limiting plate (7) in the oil inlet vertical shaft (1); buffer protection distance->The expression of (2) is: />The method comprises the steps of carrying out a first treatment on the surface of the In (1) the->The buffer protection distance is m; />The unit is m, which is the limit distance of liquid column separation; />Is a safety coefficient and is dimensionless;
s3, prefabricating an oil inlet pipeline (6) by taking the buffer protection distance asThe distance standard divides the length of the oil inlet pipeline (6) and marks the oil inlet pipeline, and a flow limiting plate (7) is arranged at a pipeline marking point;
s4, installing an oil inlet pipeline (6) at a preset position of the oil inlet vertical shaft (1), and connecting the bottom of the oil inlet pipeline (6) with an oil storage cavity (5); sequentially pouring and backfilling from bottom to top, and finally sealing a vertical shaft;
the flow limiting plate (7) is provided with a plurality of circular through holes (10) penetrating through the plate body, the circular through holes (10) are convergent through holes, and the ratio of the thickness of the flow limiting plate (7) to the aperture of the circular through holes (10) is L/d less than or equal to 2; the circle center of the circular through hole (10) of the outer layer is connected with the circle center of the circular through hole (10) of the inner layer, and the included angle between two adjacent connection lines is 45 degrees;
the installation angles of any two adjacent flow limiting plates (7) in the vertical direction of the oil inlet pipeline (6) are different by 22.5 degrees.
2. The method for protecting the large-drop oil inlet pipeline of the underground water-sealed stone cave oil depot according to claim 1, wherein flow velocity sensors are respectively arranged at the top, the middle and the bottom of the oil inlet pipeline (6) and used for feeding back oil inlet flow velocity data in the oil inlet pipeline (6) to a ground monitoring station in real time, inverting the crude oil state by utilizing the flow velocity data, judging whether a liquid column separation phenomenon occurs in the oil inlet pipeline (6), and monitoring and evaluating the oil inlet process and the current limiting effect.
3. The method for protecting the large-drop oil inlet pipeline of the underground water-sealed stone cave oil depot according to claim 1, wherein the concrete sealing plug (4) and the backfilling bentonite (3) are sequentially poured from bottom to top along the outer wall of the oil inlet pipeline (6), and finally the oil inlet shaft (1) is sealed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311552678.6A CN117267624B (en) | 2023-11-21 | 2023-11-21 | Protection method for large-drop oil inlet pipeline of underground water-sealed stone cave oil depot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311552678.6A CN117267624B (en) | 2023-11-21 | 2023-11-21 | Protection method for large-drop oil inlet pipeline of underground water-sealed stone cave oil depot |
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| Publication Number | Publication Date |
|---|---|
| CN117267624A CN117267624A (en) | 2023-12-22 |
| CN117267624B true CN117267624B (en) | 2024-02-02 |
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|---|---|---|---|
| CN202311552678.6A Active CN117267624B (en) | 2023-11-21 | 2023-11-21 | Protection method for large-drop oil inlet pipeline of underground water-sealed stone cave oil depot |
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| 地下水封储油洞库合理间距数值模拟研究;杨艳玲;温新亮;黄学军;;现代矿业(04);全文 * |
| 地下水封洞库立管的振动特性;孙旭;张劲军;杨森;;油气储运(02);全文 * |
| 大型地下石洞油气库人工水幕技术;杨凯;赵晓;张文辉;曹钢;李鹏;陈彦生;;长江科学院院报(09);全文 * |
| 大落差地下水封油库收发油作业的安全性;尤学刚;邓凯玲;左丽丽;;油气储运(07);全文 * |
| 库-鄯输油管道大落差压力控制工艺;韩忠晨;石油规划设计(04);全文 * |
| 洞库大落差管水力计算;倪玲英;谢翠丽;李成华;;油气储运(12);全文 * |
| 浅析油库输油管路系统常见事故的成因及预防;于倩秀;石油商技(01);全文 * |
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