CN104631462A - Grouting filling device and method for waste oil and gas pipelines - Google Patents
Grouting filling device and method for waste oil and gas pipelines Download PDFInfo
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- CN104631462A CN104631462A CN201410797578.4A CN201410797578A CN104631462A CN 104631462 A CN104631462 A CN 104631462A CN 201410797578 A CN201410797578 A CN 201410797578A CN 104631462 A CN104631462 A CN 104631462A
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000002699 waste material Substances 0.000 title abstract description 16
- 239000002002 slurry Substances 0.000 claims abstract description 71
- 238000001556 precipitation Methods 0.000 claims abstract description 12
- 238000004062 sedimentation Methods 0.000 claims abstract description 11
- 239000011440 grout Substances 0.000 claims description 10
- 238000007569 slipcasting Methods 0.000 claims description 10
- 239000006260 foam Substances 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract 2
- 239000002912 waste gas Substances 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 12
- 239000004568 cement Substances 0.000 description 10
- 239000002689 soil Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000011083 cement mortar Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000009933 burial Methods 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 239000004429 Calibre Substances 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention provides a grouting filling device and method for a waste oil-gas pipeline, wherein the device comprises: the grouting machine is connected with a grouting opening at one end of the pipeline and used for injecting slurry into the pipeline from the grouting opening and pushing the slurry to advance in the pipeline; one end of the sedimentation separator is connected with a slurry outlet at the upper end of the other end of the pipeline through a conduit and is used for determining that the pipeline is filled with the slurry; the vacuum pump is connected with the other end of the precipitation separator and is used for providing a vacuum environment for the pipeline during grouting and reducing resistance caused by the height difference of the pipeline; therefore, the slurry filling quality and slurry filling efficiency of the long-distance and large-caliber waste gas oil and gas pipeline can be ensured.
Description
Technical Field
The invention belongs to the technical field of petroleum engineering, and particularly relates to a grouting filling device and method for a waste oil-gas pipeline.
Background
The abandonment of oil gas pipelines is an important link for managing the life cycle of the pipelines, the service life of the pipelines reaches the upper limit or the benefit of continuously conveying oil gas is far lower than the conveying cost, and the abandonment is an inevitable choice when the pipelines have no other potential uses.
The abandoned oil and gas pipelines are generally long in distance and large in caliber, the landform of the path is complex, and the altitude change is large. If the pipeline passes through a railway, a highway, a densely populated area or other settlement-sensitive areas, the abandoned pipeline can cause soil settlement after being finally corroded completely, and the stability of the railway, the highway and the environment-sensitive areas is influenced, so that the reinforcement treatment needs to be taken.
At present, grouting into the interior of a waste pipeline is a feasible mode, but due to the particularity of an oil-gas pipeline, the traditional grouting technical means is not suitable for grouting treatment of the oil-gas pipeline. And the filling of long-distance and large-caliber pipelines is difficult to realize by only depending on pressure grouting, and the operation requirement of pipeline waste pipeline engineering cannot be met. If a large amount of pipelines are excavated and cut into short-distance pipelines to realize pure pressure grouting, a large amount of manpower, material resources and time cost are consumed, and a lot of resistance is encountered in the engineering construction process, such as land acquisition and the problem that the construction environment cannot meet the operation requirements.
Disclosure of Invention
Aiming at the problems in the prior art, the embodiment of the invention provides a grouting filling device and method for a waste oil-gas pipeline, which are used for solving the technical problem that the waste oil-gas pipeline cannot be grouted with high efficiency and low cost in the prior art.
The invention provides a grouting filling device for a waste oil-gas pipeline, which comprises:
the grouting machine is connected with a grouting opening at one end of the pipeline and used for injecting slurry into the pipeline from the grouting opening and pushing the slurry to advance in the pipeline;
one end of the sedimentation separator is connected with a slurry outlet at the upper end of the other end of the pipeline through a conduit and is used for determining that the pipeline is filled with the slurry;
and the vacuum pump is connected with the other end of the precipitation separator and is used for providing a vacuum environment for the pipeline during grouting and reducing resistance caused by the height difference of the pipeline.
In the above scheme, the apparatus further comprises:
the first valve is arranged between the grouting ports of the grouting machine and used for controlling the opening and closing states of the grouting ports.
In the above scheme, the grouting opening is parallel to the axis of the pipeline and used for converting the pressure of the grouting machine into power;
the sedimentation separator is parallel to the highest level of the pipeline.
In the above scheme, the apparatus further comprises:
the observation hole is arranged at the highest range of the pipeline and is used for observing the filling state of slurry in the pipeline;
and one end of the second valve is connected with the observation hole and is used for controlling the air tightness of the pipeline.
In the above scheme, the apparatus further comprises:
a third valve; and the third valve is arranged between the slurry outlet and the sedimentation separator and is used for controlling the on-off state of the vacuum environment.
In the above scheme, the apparatus further comprises:
and the foam ball is used for filling the pipeline and assisting the slurry to be pushed forwards when the height difference of the pipeline is not more than 1 m.
In the above scheme, the apparatus further comprises:
a mask disposed at one end of the pipe for sealing the one end of the pipe.
The invention also provides a grouting filling method of the exhaust gas oil and gas pipeline, which comprises the following steps:
injecting slurry into the pipeline from a grouting port by using a grouting machine, and pushing the slurry to advance in the pipeline;
a vacuum pump is used for providing a vacuum environment for the pipeline, so that the resistance caused by the height difference of the pipeline during grouting is reduced;
determining that the pipe is full of the slurry using a settling separator.
In the above scheme, the grouting opening is parallel to the axis of the pipeline and used for converting the pressure of the grouting machine into power.
In the scheme, when the height difference of the pipeline is not more than 1m, the pipeline is filled with foam balls to assist the forward propulsion of the slurry.
The invention provides a grouting filling device and method for a waste oil and gas pipeline, wherein the method comprises the following steps: injecting slurry into the pipeline from a grouting port by using a grouting machine, and pushing the slurry to advance in the pipeline; a vacuum pump is used for providing a vacuum environment for the pipeline, so that the resistance caused by the height difference of the pipeline during grouting is reduced; determining that the pipe is full of the slurry using a separator; so, guaranteed long distance, big bore abandonment oil gas pipeline slip casting filling distance is far away, advantages such as slip casting filling rate height, compare with traditional pure pressure grout simultaneously, can shorten engineering cycle, reduce construction cost, solved big bore, long defeated abandonment oil gas pipeline and be difficult to the problem of slip casting.
Drawings
Fig. 1 is a schematic overall structure diagram of a waste oil-gas pipeline vacuum auxiliary grouting filling device provided by an embodiment of the invention;
fig. 2 is a schematic flow chart of a vacuum-assisted grouting filling method for waste oil and gas pipelines according to an embodiment of the invention.
Detailed Description
In order to realize the grouting of the large-caliber long-distance waste oil and gas pipeline, reduce the construction cost and improve the construction efficiency, the invention provides a grouting filling device and method of the waste oil and gas pipeline, wherein the method comprises the following steps: injecting slurry into the pipeline from a grouting port by using a grouting machine, and pushing the slurry to advance in the pipeline; a vacuum pump is used for providing a vacuum environment for the pipeline, so that the resistance caused by the height difference of the pipeline during grouting is reduced; determining that the pipe is full of the slurry using a settling separator.
The technical solution of the present invention is further described in detail by the accompanying drawings and the specific embodiments.
Example one
The embodiment provides a slip casting filling device of abandonment oil and gas pipeline, as shown in fig. 1, the device includes: a grouting machine 11, a grouting opening 12, a precipitation separator 13, a conduit 14, a grout outlet 15 and a vacuum pump 16; wherein,
the grouting machine 11 is connected with a grouting opening 12 at one end of the pipeline 17, and is used for injecting slurry into the pipeline 17 from the grouting opening 12, providing forward power for the slurry and pushing the slurry to move forward in the pipeline 17; wherein the grouting opening 12 is parallel to the axis of the pipeline 17 to convert the pressure of the grouter 11 into power. The cement mortar is cement mortar, the adding amount of a water reducing agent of the cement mortar is 1.2%, and the water-cement ratio is 1: 2.
One end of the precipitation separator 13 is connected with a slurry outlet 15 at the upper end of the other end of the pipeline 17 through a guide pipe 14, and the precipitation separator is used for determining that the pipeline 17 is filled with the slurry; wherein, the sedimentation separator 13 is parallel to the highest distance of the pipeline 17, and when slurry exists in the sedimentation separator 13, the slurry can be determined to be full of the pipeline 17.
The vacuum pump 16 is connected with the other end of the precipitation separator 13 and is used for vacuumizing the pipeline 17, so that a vacuum environment is provided for the pipeline 17, and resistance caused by the height difference of the pipeline 17 during grouting is reduced. Here, the degree of vacuum in the pipe 17 is determined according to the pressure-bearing range of the pipe 17, and the degree of vacuum can be maintained generally at about 0.05 MPa. When the vacuum degree in the pipeline 17 is kept stable, the vacuum pump is stopped for 1min, and if the pressure change is less than 0.01MPa, the pipeline 17 can be considered to basically reach and maintain the vacuum state. If not, this indicates that the duct 17 is not completely sealed and should be carefully inspected prior to grouting.
Here, the setting of the positions of the grout inlet 12 and the grout outlet 15 and the filling length of the pipe 17 should be determined according to a pipeline elevation map.
Specifically, if there is no pipeline elevation map, the pipeline elevation map is drawn by measuring the buried depth of the pipeline 17 and the position of the center line of the pipeline 17 by using a Pulse-code modulation (PCM) probe before construction, and Positioning the position of the pipeline 17 and the altitude of the pipeline 17 along the line by using a Global Positioning System (GPS).
According to the factors such as a pipeline elevation diagram, the pipe diameter, the grouting material characteristics, the grouting equipment performance and the like, the one-time filling length of the pipeline 17 is determined by adopting a fluid mechanics method theoretical calculation. In the filling length range, a place with a relatively high altitude is selected as the grouting port 12, and another place with a relatively high altitude is selected as the pipeline grout outlet 15.
Specifically, the apparatus further comprises: a first valve 18, a sight glass 19, a second valve 20; wherein,
the first valve 16 is arranged between the grouting ports 12 of the grouting machine 11 and used for controlling the opening and closing states of the grouting ports 12; the observation hole 19 is arranged at the highest range of the pipeline 17 and is used for observing the filling state of slurry in the pipeline 17;
one end of the second valve 20 is connected to the observation hole 19 for controlling the airtightness of the pipe 17; wherein, the observation hole 19 includes at least one, the second valve 20 includes at least one, and the observation hole 19 and the second valve 20 are arranged at regular intervals on the pipeline 17.
Here, the number of the observation holes 19 and the second valves 20 is determined according to the undulation of the duct 17; for example, if the laying topography of the pipeline 17 is relatively flat, only one observation hole 19 and one second valve 20 may be provided at only one elevation.
If the pipeline 17 is laid in a more undulating terrain, at a plurality of elevations, a plurality of observation holes 19 and a plurality of second valves 20 may be provided.
Here, the apparatus further includes: a third valve 21, a foam ball 22, a mask 23; wherein,
the third valve 21 is arranged between the slurry outlet 15 and the precipitation separator 13 and is used for controlling the on-off state of the vacuum environment.
The foam balls 22 are used for filling the pipeline 17 when the elevation difference of the pipeline 17 is not more than 1m, and assisting the forward propulsion of the slurry, so that the slurry is ensured to be long in filling distance and compact in filling in the pipeline 17, the soil settlement caused by the overall corrosion of the pipeline 17 is prevented, the construction period can be shortened, and the treatment cost of the pipeline 17 is reduced.
The mask 23 is disposed at one end of the duct 17 for sealing one end of the duct 15.
Wherein, the grouter 11 is a pressure grouter; the precipitation separator 13 is a vacuum separator; the second valve 20 is an exhaust valve, and the third valve 21 is a vacuum valve.
In practical application, the prepared cement slurry is injected into the pipeline 17 by using the grouting machine 11, the second valve 20 is closed after a period of time, the pipeline 17 is kept airtight, the vacuum pump 16 is started to assist the slurry to move forwards in the pipeline 17, the resistance brought to the slurry advancing due to the pipeline height difference is reduced, and the starting time and the vacuum degree of the vacuum pump 16 are determined according to the length of the pipeline 17 and the height difference of the pipeline 17.
After a while, the sediment separator 13 is observed and if slurry is present in the sediment separator 13, the pressure grouter 11 and the vacuum pump 16 are stopped. A second valve 20 installed at a high position of the pipe 17 is opened to observe whether the slurry is filled in the pipe 17 through the observation hole 19. If the slurry fills the pipe 17, the grouting process is completed, closing both ends of the pipe 17.
The slip casting filling device of abandonment oil gas pipeline that this embodiment provided has solved the slip casting of abandonment oil gas pipeline and has filled the problem, has the advantage such as guarantee that long distance, heavy-calibre abandonment oil gas pipeline slip casting filling distance are far away, slip casting filling rate height, compares with traditional pure pressure simultaneously, can shorten engineering cycle, reduces construction cost.
Example two
Corresponding to the first embodiment, the present embodiment provides a method for grouting and filling a waste oil and gas pipeline, as shown in fig. 2, the method mainly includes the following steps:
step 210, injecting slurry into the pipeline from a grouting port by using a grouting machine, and pushing the slurry to advance in the pipeline;
in the step, the grouting machine is connected with a grouting opening at one end of the pipeline, the prepared cement slurry is injected into the pipeline by using the grouting machine, forward power is provided for the slurry, and the slurry is pushed to move forward in the pipeline; after a period of time, the second valve is closed to maintain the gas tightness of the pipeline. Wherein the grouting opening is parallel to the axis of the pipeline so as to convert the pressure of the grouting machine into power.
The opening and closing state of the grouting opening is controlled through a first valve.
And the positions of the grouting port and the grout outlet are set, and the filling length of the pipeline is determined according to a pipeline elevation map.
Specifically, if no pipeline elevation map exists, the pipeline burial depth and the pipeline center line position are measured by a PCM pipe detector before construction, the pipeline position and the pipeline altitude along the pipeline are located by a Global Positioning System (GPS), and the pipeline elevation map is drawn.
And according to the factors such as a pipeline elevation map, the pipe diameter, the grouting material characteristics, the grouting equipment performance and the like, the one-time filling length of the pipeline is determined by adopting a fluid mechanics method theoretical calculation. In the filling length range, a place with a relatively high altitude is selected as a grouting port, and another place with a relatively high altitude is selected as a pipeline grout outlet.
Here, the position of the observation hole is also determined from the elevation map. Specifically, the observation hole is arranged at the highest range of the pipeline and is used for observing the filling state of slurry in the pipeline;
one end of the second valve is connected with the observation hole and used for controlling the air tightness of the pipeline; the observation hole comprises at least one observation hole, the second valve comprises at least one observation hole, and the observation hole and the second valve are arranged on the pipeline at regular intervals.
Here, the number of the observation holes and the second valves is determined according to the height of the pipeline; for example, if the laying terrain of the pipeline is relatively flat terrain, only one observation hole and one second valve can be arranged at only one elevation.
If the laying terrain of the pipeline is undulating terrain and a plurality of elevations exist, a plurality of observation holes and a plurality of second valves can be arranged.
Step 211, providing a vacuum environment for the pipeline by using a vacuum pump, and reducing resistance caused by a height difference of the pipeline during grouting;
in the step, after the second valve is closed, the vacuum pump is started, the vacuum pump is connected with the other end of the precipitation separator and used for vacuumizing the pipeline and providing a vacuum environment for the pipeline to assist the slurry to move forwards in the pipeline and reduce resistance brought to the slurry advancing due to the height difference of the pipeline, and the starting time and the degree of vacuum pumping of the vacuum pump are determined according to the length of the pipeline and the height difference of the pipeline.
When the height difference of the pipeline is not more than 1m, the pipeline can be filled with foam balls to assist the slurry to be pushed forward, so that the slurry is ensured to be filled in the pipeline for a long distance and compactly.
Here, the degree of vacuum in the pipe is determined according to the pressure-bearing range of the pipe, and the degree of vacuum can be maintained generally at about 0.05 MPa. And when the vacuum degree in the pipeline reaches the stability, stopping the vacuum pump for 1min, and if the pressure change is less than 0.01MPa, determining that the pipeline can basically reach and maintain the vacuum state. If not, it indicates that the pipe is not completely sealed and should be carefully inspected prior to grouting.
At step 212, a settling separator is utilized to determine that the pipe is full of the slurry.
In the step, after the vacuum pump works for a period of time, the sedimentation separator is observed, and if slurry appears in the sedimentation separator, the pressure grouting machine and the vacuum pump are stopped. And opening a second valve arranged at the high position of the pipeline, and observing whether the pipeline is full of slurry through the observation hole. If the pipeline is full of slurry, the grouting process is completed, and the two ends of the pipeline are closed.
EXAMPLE III
In the practical application process, the grouting filling device and method for the waste oil-gas pipeline provided by the invention have the advantages that a good effect is obtained, and the purpose of good grouting is realized.
For example, a company plans to abandon a section of 80 km buried pipeline, and after measurement and calculation, a 20 km pipeline needs grouting treatment, and according to factors such as a pipeline elevation diagram, pipe diameter, cement paste characteristics, grouting equipment performance and convenience in operation, three sections of pipelines are determined by theoretical calculation of a fluid mechanics method, including: a first pipeline, a second pipeline and a third pipeline; wherein the height difference and the length of the first pipeline and the second pipeline are the same, the height difference is 5 meters, the length is 6 kilometers, and the diameter of the pipeline is 406 mm; the height difference of the third pipeline is 1 meter, the length of the third pipeline is 8 kilometers, and the diameter of the third pipeline is 406 mm. Wherein the grouting apparatus comprises: grouter, vacuum pump, deposition separator.
The soil quality distributed in the first pipeline, the second pipeline and the third pipeline areas is mainly clay, 1 grouting pump is used according to actual conditions, and the grouting rate is 2m3H, the grouting pressure is 2.5 MPa; the vacuum pump 1 can maintain the negative pressure at about 50% of the atmospheric pressure.
The filling engineering is carried out according to the method provided by the invention, and specifically comprises the following steps:
1) and (6) determining the pipeline. As the company does not have a pipeline elevation map, the trend and the burial depth of the pipeline are determined by using a PCM pipe detector before construction, the altitude of the pipeline is positioned by using a GPS satellite, and the pipeline elevation map is drawn.
2) And (5) excavating the operation pit. According to the requirements of water supply and drainage pipeline engineering construction and acceptance specifications GB50268-2008, an operation pit is excavated, the positions of the operation pit required by a grouting port, an observation hole and a grout outlet are selected at a place with higher pipeline altitude, and the arrangement condition of the observation hole is one per 300 meters.
3) And (5) cutting and welding the pipeline for installation. Cutting a pipeline with the length of 20 kilometers into three sections, wherein the three sections comprise: the first pipeline, the second pipeline and the third pipeline are welded with a mask at a slurry outlet of the pipeline and an accessory facility connected with the pipeline. Wherein the accessory device comprises: a conduit, a first valve, a second valve, a third valve, etc.
4) Connecting grouting equipment and trial vacuumizing. According to the connection sequence of the device provided by the invention, the equipment such as a pressure grouting machine, a pipeline, a vacuum precipitation separator, a vacuum pump and the like is connected firmly. Checking whether the first valve, the second valve, the third valve and the valve sealing cap are completely sealed. And closing the first valve, opening the third valve, starting a vacuum pump, trying to vacuumize for 30min, removing air in the pipeline, and maintaining the vacuum degree at about 0.05 MPa. And when the vacuum degree in the pipeline is kept stable, stopping the pump for 1min, and if the pressure is reduced to be less than 0.01MPa, determining that the pipeline system basically reaches and maintains the vacuum state. If not, it indicates that the pipe is not completely sealed and is inspected and improved prior to grouting.
5) And (5) preparing cement paste. The grouting filling material is 'modified cement paste', the adding amount of the water reducing agent is 1.2%, and the water cement ratio is 1: 2.
6) And (5) grouting is started. Two cases are considered before starting the grouting pump. For a first pipeline and a second pipeline with the pipeline height difference of 5m, the cement slurry is directly injected into the pipelines without adding foam balls; for a third pipeline with the pipeline height difference of 1 meter, a foam ball needs to be added into the pipeline before grouting so as to ensure that slurry is fully pushed forward in the pipeline, and vacuum-assisted grouting is more effective.
7) And observing the filling condition of the slurry. And observing the filling condition of the cement paste in the pipeline through the observation hole, and if the cement paste overflows from the vacuum precipitation separator when the grouting is about to finish, indicating that the grouting is finished, and closing the pressure grouting machine and the vacuum pump.
8) Equipment dismantling and environment recovery: and after the equipment is dismantled, backfilling soil, restoring the landform and the geomorphic appearance before excavation according to the sequence of first bottom soil and then surface soil, planting corresponding vegetation, and tracking and evaluating the environment restoration condition.
In this embodiment, for the first pipeline and the second pipeline, during the process of starting the vacuum pump, the phenomenon that the vacuum degree of the pipeline is rapidly reduced may happen accidentally, and the occurrence of this phenomenon indicates that the slurry has passed the highest point and runs downwards, and at this time, the vacuum pump needs to be turned off for a period of time.
By adopting the grouting device and the grouting method provided by the invention, after construction is finished, the pipeline is completely filled with slurry, and the bleeding amount is less than 3cm, so that the purpose of grouting at this time is achieved.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalents, improvements, etc. that are within the spirit and principle of the present invention should be included in the present invention.
Claims (10)
1. A slip casting filling device of abandonment oil and gas pipeline, its characterized in that, the device includes:
the grouting machine is connected with a grouting opening at one end of the pipeline and used for injecting slurry into the pipeline from the grouting opening and pushing the slurry to advance in the pipeline;
one end of the sedimentation separator is connected with a slurry outlet at the upper end of the other end of the pipeline through a conduit and is used for determining that the pipeline is filled with the slurry;
and the vacuum pump is connected with the other end of the precipitation separator and is used for providing a vacuum environment for the pipeline during grouting and reducing resistance caused by the height difference of the pipeline.
2. The apparatus of claim 1, wherein the apparatus further comprises:
the first valve is arranged between the grouting ports of the grouting machine and used for controlling the opening and closing states of the grouting ports.
3. The apparatus of claim 1, wherein the grout port is parallel to the axis of the pipeline for converting the pressure of the grout machine into power;
the sedimentation separator is parallel to the highest level of the pipeline.
4. The apparatus of claim 1, wherein the apparatus further comprises:
the observation hole is arranged at the highest range of the pipeline and is used for observing the filling state of slurry in the pipeline;
and one end of the second valve is connected with the observation hole and is used for controlling the air tightness of the pipeline.
5. The apparatus of claim 1, wherein the apparatus further comprises:
a third valve; and the third valve is arranged between the slurry outlet and the sedimentation separator and is used for controlling the on-off state of the vacuum environment.
6. The apparatus of claim 1, wherein the apparatus further comprises:
and the foam ball is used for filling the pipeline and assisting the slurry to be pushed forwards when the height difference of the pipeline is not more than 1 m.
7. The apparatus of claim 1, wherein the apparatus further comprises:
a mask disposed at one end of the pipe for sealing the one end of the pipe.
8. A method of slip casting an exhaust gas oil and gas pipeline, the method comprising:
injecting slurry into the pipeline from a grouting port by using a grouting machine, and pushing the slurry to advance in the pipeline;
a vacuum pump is used for providing a vacuum environment for the pipeline, so that the resistance caused by the height difference of the pipeline during grouting is reduced;
determining that the pipe is full of the slurry using a settling separator.
9. The method of claim 8, wherein the injection port is parallel to an axis of the pipe for converting pressure of the grouter into power.
10. The method of claim 8, wherein when the pipe height difference is no greater than 1m, the pipe is filled with foam balls to assist in advancing the slurry.
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| CN201410797578.4A CN104631462A (en) | 2014-12-18 | 2014-12-18 | Grouting filling device and method for waste oil and gas pipelines |
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| CN201410797578.4A CN104631462A (en) | 2014-12-18 | 2014-12-18 | Grouting filling device and method for waste oil and gas pipelines |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105178323A (en) * | 2015-09-08 | 2015-12-23 | 中石化胜利建设工程有限公司 | Grouting disposal method for long-distance large-caliber retired pipeline |
| CN105236857A (en) * | 2015-09-08 | 2016-01-13 | 中石化胜利建设工程有限公司 | Grouting material for filling retired pipeline and use method thereof |
| CN107433273A (en) * | 2017-08-08 | 2017-12-05 | 中石化河南油建工程有限公司 | A kind of discarded crude oil pipeline method for innocent treatment |
| CN110560467A (en) * | 2019-10-12 | 2019-12-13 | 中石化第十建设有限公司 | Harmless treatment method for waste and old pipelines |
| CN111997369A (en) * | 2020-08-07 | 2020-11-27 | 中国建筑第二工程局有限公司 | Prestressed long-distance large-diameter multi-curvature pore passage vacuum grouting device and grouting method |
| CN112459494A (en) * | 2020-11-25 | 2021-03-09 | 中国建筑土木建设有限公司 | Automatic grouting system and grouting method for prestressed pipeline |
| CN114522955A (en) * | 2020-10-31 | 2022-05-24 | 中国石油化工股份有限公司 | Method for treating abandoned buried pipe section through grouting |
| CN115788574A (en) * | 2023-02-07 | 2023-03-14 | 山东黄金矿业科技有限公司充填工程实验室分公司 | Gas filling cavity speculum type slurry observation device |
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| CN107433273B (en) * | 2017-08-08 | 2020-06-12 | 中石化河南油建工程有限公司 | Harmless treatment method for waste crude oil pipeline |
| CN110560467A (en) * | 2019-10-12 | 2019-12-13 | 中石化第十建设有限公司 | Harmless treatment method for waste and old pipelines |
| CN111997369A (en) * | 2020-08-07 | 2020-11-27 | 中国建筑第二工程局有限公司 | Prestressed long-distance large-diameter multi-curvature pore passage vacuum grouting device and grouting method |
| CN114522955A (en) * | 2020-10-31 | 2022-05-24 | 中国石油化工股份有限公司 | Method for treating abandoned buried pipe section through grouting |
| CN114522955B (en) * | 2020-10-31 | 2023-10-10 | 中国石油化工股份有限公司 | Grouting treatment method for scrapped buried pipe section |
| CN112459494A (en) * | 2020-11-25 | 2021-03-09 | 中国建筑土木建设有限公司 | Automatic grouting system and grouting method for prestressed pipeline |
| CN112459494B (en) * | 2020-11-25 | 2022-05-17 | 中国建筑土木建设有限公司 | Automatic grouting system and grouting method for prestressed pipeline |
| CN115788574A (en) * | 2023-02-07 | 2023-03-14 | 山东黄金矿业科技有限公司充填工程实验室分公司 | Gas filling cavity speculum type slurry observation device |
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