CN106925577A - Method for cleaning residues of waste oil and gas pipelines - Google Patents
Method for cleaning residues of waste oil and gas pipelines Download PDFInfo
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- CN106925577A CN106925577A CN201511032027.XA CN201511032027A CN106925577A CN 106925577 A CN106925577 A CN 106925577A CN 201511032027 A CN201511032027 A CN 201511032027A CN 106925577 A CN106925577 A CN 106925577A
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- Prior art keywords
- pipeline
- wiper
- cleaning
- ball collecting
- collecting chamber
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- 238000004140 cleaning Methods 0.000 title claims abstract description 141
- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000002699 waste material Substances 0.000 title abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 230000000694 effects Effects 0.000 claims abstract description 7
- 238000010926 purge Methods 0.000 claims description 76
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 74
- 239000012530 fluid Substances 0.000 claims description 62
- 238000002347 injection Methods 0.000 claims description 49
- 239000007924 injection Substances 0.000 claims description 49
- 229910052757 nitrogen Inorganic materials 0.000 claims description 39
- 239000007789 gas Substances 0.000 claims description 30
- 238000011084 recovery Methods 0.000 claims description 14
- 238000005406 washing Methods 0.000 claims description 14
- 238000011010 flushing procedure Methods 0.000 claims description 12
- 239000003638 chemical reducing agent Substances 0.000 claims description 11
- 238000013461 design Methods 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 claims description 4
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 4
- 238000005070 sampling Methods 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 4
- 239000003344 environmental pollutant Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 231100000719 pollutant Toxicity 0.000 claims description 3
- 230000000007 visual effect Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 238000012545 processing Methods 0.000 abstract description 5
- 239000002689 soil Substances 0.000 abstract description 5
- 238000003912 environmental pollution Methods 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 16
- 229910000831 Steel Inorganic materials 0.000 description 12
- 239000010985 leather Substances 0.000 description 12
- 239000010959 steel Substances 0.000 description 12
- 238000005520 cutting process Methods 0.000 description 4
- 239000010779 crude oil Substances 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- IXHBTMCLRNMKHZ-LBPRGKRZSA-N levobunolol Chemical compound O=C1CCCC2=C1C=CC=C2OC[C@@H](O)CNC(C)(C)C IXHBTMCLRNMKHZ-LBPRGKRZSA-N 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 206010004542 Bezoar Diseases 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000004210 cathodic protection Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 208000004141 microcephaly Diseases 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
- 230000008092 positive effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000011120 smear test Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
- B08B9/053—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction
- B08B9/057—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction the cleaning devices being entrained discrete elements, e.g. balls, grinding elements, brushes
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning In General (AREA)
Abstract
The invention discloses a method for cleaning residues of a waste oil-gas pipeline, and belongs to the field of cleaning of oil-gas pipelines. According to the method, the configuration of a corresponding cleaning system is determined according to residues in the pipeline by investigating the current situation of the pipeline to be cleaned; the temporary ball distributing cylinder and the temporary ball collecting cylinder are respectively arranged at the two ends of the pipeline, so that the cleaning requirements of waste pipelines under different conditions can be met, the structures of the temporary ball distributing cylinder and the temporary ball collecting cylinder are simple, the processing and the field application are convenient, the cleaned waste liquid can be accurately recovered at a fixed point, the field construction is convenient, the cleaning system is sent into the pipeline from the ball distributing cylinder for cleaning operation, then the cleaning system is recovered from the ball collecting cylinder, a blind plate does not need to be opened and closed frequently, and the operation safety is ensured, so that the working efficiency is also greatly improved; and finally, recovering the pipeline, and inspecting the cleaning effect of the pipeline, so that the residues in the waste oil and gas pipe are cleaned, and the residues in the waste pipeline are prevented from being diffused into surrounding soil and water to cause environmental pollution.
Description
Technical field
The present invention relates to oil-gas pipeline cleaning field, more particularly to a kind of discarded oil-gas pipeline residue cleaning side
Method.
Background technology
Oil-gas pipeline it is discarded be pipeline lifecycle management an important step, pipeline Years Of Service reaches
To the upper limit or continue convey oil gas benefit far below conveying cost and pipeline without other potential uses when,
Discarded use is inevitably selection.The long-term discarded pipe for being embedded in underground, due to cathodic protection, daily
The missing of detection method, eventually general corrosion and collapse.In order to avoid the residue diffusion in discarded pipe
Environment is polluted in surrounding soil and water body, the cleaning of residue is most important.
No matter the pipeline after cleaning is taken dismounting mode discarded or discarded on the spot, positive effect is respectively provided with.
However, the cleaning of discarded pipe, different from the physical cleaning of in-service pipeline because many discarded pipelines by
In stopping transportation for many years, original yard facility (such as pump, receiving ball tube) possibly cannot utilize, or even integral tube
Road has been segmented into multiple independent pipeline sections, and its chemical cleaning project difficulty is bigger, therefore, lack at present for useless
Abandon Oil/Gas Pipe residues inside cleaning method.
Realize it is of the invention during, inventor find prior art at least there is problems with：
At present, prior art lacks for abandoned oil pipe residue cleaning method, easily causes discarded pipe
Residue in road causes environmental pollution in being diffused into surrounding soil and water body.
The content of the invention
In order to solve the problems, such as that prior art lacks for abandoned oil pipe residue cleaning method, this hair
Bright embodiment provides a kind of discarded oil-gas pipeline residue cleaning method, the discarded oil-gas pipeline residue
Cleaning method includes：
Step 1, investigates pipeline present situation to be cleaned；
Step 2, according to residue in the pipeline, determines the configuration of corresponding purging system；
Step 3, service cylinder and ball collecting chamber are respectively mounted in the pipe ends；
Step 4, the purging system is sent from service cylinder carries out washing and cleaning operation to the pipeline；
Step 5, the purging system is reclaimed from the ball collecting chamber；
Step 6, recovery treatment is carried out to the pipeline, and check the cleaning performance of the pipeline.
Specifically, the step 1, specifically includes：
Consult design and the operation maintenance data of pipeline, obtain the wall thickness of the pipeline, bore, bearing capacity,
Pumped (conveying) medium situation, pipeline purging or pigging situation relevant information, judge whether the purging system can pass through
The pipeline.
Further, the purging system includes at least two wiper groups, the outer peripheral edge of each wiper group
Inwall with the pipeline is affixed, and is provided with cleaning fluid between the adjacent wiper group of each two, each
Wiper group includes at least one wiper being affixed.
Specifically, the step 2, specifically includes：
On the pipeline, pipe sampling of breaking, thickness and composition to residues inside are analyzed, and determine structure
Into the wiper type and cleaning fluid type of purging system, and cleaning fluid consumption.
Further, the step 3, specifically includes：
Service cylinder and ball collecting chamber are respectively welded in the pipe ends；
Pressure gauge is installed on the service cylinder, and injecting hole is set；
Mudhole and steam vent be set on the ball collecting chamber, and the ball collecting chamber length more than or equal to described
The total length of all wipers in purging system；
Liquid injection hole and porus excretorius be set in the pipe end near service cylinder, the connection of service cylinder and pipeline
Locate the distance to the liquid injection hole, more than the length of wiper group most long in the purging system, and the note
Fluid apertures is located between the porus excretorius and service cylinder；
In the pipe end setting outage near ball collecting chamber, the junction of the ball collecting chamber and pipeline is described in
The distance of outage, more than the purging system in wiper group most long length；
Indicator is set on pipeline between the outage and the ball collecting chamber.
Further, the step 4, specifically includes：
Step 41, the purging system includes two wiper groups, opens the steam vent on the ball collecting chamber,
In the case of pipeline normal pressure, the blind plate of service cylinder is opened, the first wiper group in purging system is promoted
To the concentric reducer of the service cylinder；
Step 42, closes blind plate, porus excretorius and the liquid injection hole of service cylinder, is promoted by injecting hole nitrogen injection
Direction from first wiper group to ball collecting chamber run, and the first wiper group and the second adjacent wiper group it
Between set cleaning fluid length more than the nitrogen promote the first wiper group operation distance；
Step 43, closes injecting hole and stops nitrogen injection, and opening porus excretorius makes service cylinder pressure to normal pressure, beats
Exploitation ball cylinder blind plate, the second wiper group is pushed at the concentric reducer of the service cylinder, closes service cylinder
Blind plate；
Step 44, cleaning fluid is filled by liquid injection hole, until porus excretorius has cleaning fluid to overflow, closes porus excretorius,
Continue to finish the remainder filling of the cleaning fluid for setting, and close liquid injection hole；
Step 45, promotes the second wiper group to be run to the direction of ball collecting chamber, directly by injecting hole nitrogen injection
Pipeline is fully entered to the purging system, injecting hole injecting compressed air is opened and is promoted purging system described
Washing and cleaning operation is carried out in pipeline.
Further, the nitrogen in step 42 promotes the distance of the first wiper group operation, is basis
The service life of nitrogen is obtained, service life t=(P2 × V2)/(Q × P1) of the nitrogen；
Wherein, the pressure in P1- source nitrogens exit, Q- nitrogen flows, the numerical value of P2- service cylinder pressure gauges,
The corresponding piping volume of the first wipers of V2- group setting range ability.
Further, the step 5, specifically includes：
Step 51, during purging system carries out washing and cleaning operation in the pipeline, open steam vent and
Mudhole, steam vent is closed when residue starts and discharged from mudhole in pipeline；
Step 52, after indicator indicates the first wiper group to pass through completely, closes mudhole and stops blowdown；
Step 53, opening outage carries out the reception of cleaning fluid, after cleaning fluid is received, closes outage,
Open mudhole and continue blowdown, after indicator indicates the second wiper group to pass through completely, close mudhole and stop
Only blowdown；
Step 54, makes the wiper in the purging system fully enter ball collecting chamber；
Step 55, closes injecting hole and stops compressed air injection, while opening porus excretorius and steam vent, will manage
Road pressure release opens the blind plate of ball collecting chamber to normal pressure, reclaims wiper.
Specifically, the step 6, specifically includes：
Indicator is removed, ball collecting chamber and service cylinder is cut back；
By visual observation, pipeline inside wipes or disconnected pipe checks pipeline residues inside, and the cleaning to receiving
Liquid carries out pollutant concentration test, and evaluates the effect after pipeline cleaning.
Preferably, the cleaning fluid is aqua type cleaning fluid and/or flushing water.
The beneficial effect that technical scheme provided in an embodiment of the present invention is brought is：
Present invention pipeline present situation to be cleaned by inquiry, according to residue in pipeline, determines corresponding cleaning
The configuration of system, and service cylinder and ball collecting chamber are respectively mounted in pipe ends, by purging system from service cylinder
Send carries out washing and cleaning operation to pipeline, the purging system is then reclaimed from ball collecting chamber, finally to pipeline
Carry out recovery treatment, and check the cleaning performance of pipeline, realize the cleaning to abandoned oil pipe residue,
Avoid causing the residue in discarded pipe from causing environmental pollution in being diffused into surrounding soil and water body；The present invention
Method is simple, easy to operate, practical.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, institute in being described to embodiment below
The accompanying drawing for needing to use is briefly described, it should be apparent that, drawings in the following description are only the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work,
Other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is that a kind of flow of discarded oil-gas pipeline residue cleaning method provided in an embodiment of the present invention is illustrated
Figure；
Fig. 2 is the connection diagram of service cylinder, ball collecting chamber and pipeline that further embodiment of this invention is provided；
Fig. 3 is the purging system structural representation that further embodiment of this invention is provided；
Wherein, 1 blind plate, 2 injecting holes, 3 pressure gauges, 4 service cylinders, 5 liquid injection holes, 6 porus excretoriuses, 7
Pipeline, 8 outages, 9 indicators, 10 ball collecting chambers, 11 steam vents, 12 mudholes, 13 wiper groups,
14 cleaning fluids, 15 residues.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to the present invention
Implementation method is described in further detail.
As shown in figure 1, the invention provides a kind of discarded oil-gas pipeline residue cleaning method, it is described discarded
Oil-gas pipeline residue cleaning method includes：
Step 1, investigates the present situation of pipeline 7 to be cleaned；
Step 2, according to residue 15 in the pipeline 7, determines the configuration of corresponding purging system；
Step 3, service cylinder 4 and ball collecting chamber 10 are respectively mounted at the two ends of the pipeline 7；
Step 4, the purging system is sent from service cylinder 4 carries out washing and cleaning operation to the pipeline 7；
Step 5, the purging system is reclaimed from the ball collecting chamber 10；
Step 6, recovery treatment is carried out to the pipeline 7, and check the cleaning performance of the pipeline 7.
The present invention present situation of pipeline 7 to be cleaned by inquiry, according to residue 15 in pipeline 7, it is determined that correspondence
Purging system configuration；And the present invention is independent of the pump and receiving ball tube facility of original pipe-line system, in pipe
The two ends of road 7 are respectively mounted interim service cylinder 4 and ball collecting chamber 10, can meet the discarded pipe 7 of different situations
Cleaning needs, interim service cylinder 4 and the simple structure of ball collecting chamber 10, are easy to processing and scene application, cleaning
Waste liquid adjustable point afterwards is accurately reclaimed, and site operation is convenient；
As shown in figure 1, also can be found in Fig. 2, purging system is sent to pipeline 7 from service cylinder 4 to be carried out
Washing and cleaning operation, then from recovery and rinsing system at ball collecting chamber 10, and purging system overall time is reclaimed, no
Need frequently opening and closing blind plate 1, it is ensured that processing safety also greatly improves operating efficiency；Finally pipeline 7 is carried out
Recovery is processed, and checks the cleaning performance of pipeline 7, realizes the cleaning to abandoned oil pipe residue 15,
Avoid causing the residue 15 in discarded pipe 7 from causing environmental pollution in being diffused into surrounding soil and water body；This
Inventive method is simple, practical, easy to operate.
Further, step 1, specifically includes：The design and operation maintenance data of pipeline 7 are consulted, institute is obtained
State the related letter of wall thickness, bore, bearing capacity, pumped (conveying) medium situation, pipeline purging or pigging situation of pipeline 7
Breath, judge the purging system whether can by the pipeline 7 so that judge the logical ball ability of pipeline 7 with
And the specific segmentation situation during cleaning of residue 15.
Specifically, as shown in Fig. 2 also can be found in Fig. 3, purging system includes at least two wiper groups 13,
Inwall of the outer peripheral edge of each wiper group 13 with the pipeline 7 is affixed, and the adjacent wiper of each two
Cleaning fluid 14 is provided between group 13, each wiper group 13 includes at least one wiper being affixed.Its
In, wiper group 13 primarily serves sealing and cleaning scraping action, and wiper group 13 includes one be affixed
Wiper or multiple wiper, wiper can be straight panel wiper, or leather cup wiper, clearly
The quantity of the wiper in the quantity of pipe device group 13 and each wiper group 13, and entire length can root
Flexibly set according to actual conditions, cleaning fluid 14 primarily serves dissolving and the effect rinsed, and cleaning fluid 14 can be with
It is the combination of simple aqua type cleaning fluid, or the aqua type cleaning fluid and clear water that each independently use,
Limitation is constructed without to purging system, it is allowed to several monomer wipers or wiper group 13 and one section of cleaning
Liquid 14 or multistage cleaning fluid 14 form purging system, so as to meet the cleaning need of different type residue 15
Ask.
Further, step 2, specifically includes：On the pipeline 7, choose the disconnected pipe of proper site and taken
Sample, thickness and main component to residues inside 15 are analyzed, it is determined that constituting the wiper of purging system
Type and the type of cleaning fluid 14, and the consumption of cleaning fluid 14.
Further, step 3, specifically includes：
As shown in Fig. 2 service cylinder 4 and ball collecting chamber 10 are respectively welded at the two ends of the pipeline 7, wherein, hair
Ball cylinder 4 is arranged on the high position Dian Chu of pipeline 7, is more beneficial for the operation of washing and cleaning operation；Implement in the present invention
In example, before service cylinder 4 and the welding of ball collecting chamber 10 is carried out, construction site preparation is first carried out, specifically included：
Determine the installation site of ball collecting chamber 10 and service cylinder 4, carry out the operating pit of pipeline 7 excavation, open up beta site
For the storage of vehicle and equipment, the setting of place warning line；
As shown in Fig. 2 installing pressure gauge 3 on the service cylinder 4, monitored in pipeline 7 by pressure gauge 3
Pressure, and injecting hole 2 is set, wherein, injecting hole 2 is used for the injection of gas, is installed on injecting hole 2
Valve, the injection for controlling gas；
As shown in Fig. 2 mudhole 12 and steam vent 11 are set on the ball collecting chamber 10, and the receipts ball
Total length of the length of cylinder 10 more than or equal to all wipers in the purging system so that ball collecting chamber 10
Length is large enough to hold all wipers, wherein, valve is installed on mudhole 12 and steam vent 11, valve
Implementation has various, can be gate valve, or ball valve.
As shown in Fig. 2 liquid injection hole 5 and porus excretorius 6 are being set near the end of pipeline 7 of service cylinder 4, it is described
The junction of service cylinder 4 and pipeline 7 to the liquid injection hole 5 distance, it is most long more than in the purging system
The length of wiper group 13, and the liquid injection hole 5 is between the porus excretorius 6 and the service cylinder 4；
Wherein, in the present embodiment, porus excretorius 6 is mainly used in the discharge of gas and liquid, is arranged on against liquid injection hole 5
And away from the position of service cylinder 4, and on liquid injection hole 5 and porus excretorius 6 valve is installed respectively；
As shown in Fig. 2 setting outage 8, the ball collecting chamber 10 near the end of pipeline 7 of ball collecting chamber 10
With the distance of the junction of pipeline 7 to the outage 8, more than the purging system in wiper most long
The length of group 13, is arranged such, and may be such that the waste liquid after cleaning in pipeline 7 can be discharged all, wherein,
Valve is installed on outage 8；
As shown in Fig. 2 setting indicator on pipeline 7 between the outage 8 and the ball collecting chamber 10
9；Wherein, indicator 9 is used to monitor whether purging system passes through, and in the present embodiment, indicator 9 is arranged on
Outage 8 is on the pipeline 7 of the side of ball collecting chamber 10.
Preferably, as shown in Fig. 2 step 4, specifically includes：
In the embodiment of the present invention, the purging system includes two wiper groups 13, and step 41 opens described
Steam vent 11 on ball collecting chamber 10, in the case of the normal pressure of pipeline 7, opens the blind plate 1 of service cylinder 4, will
The first wiper group 13 in purging system is pushed at the concentric reducer of the service cylinder 4；Wherein, this implementation
In example, the first wiper group 13 is pushed at the concentric reducer of service cylinder 4 by the steel pipe of certain length；
Step 42, closes blind plate 1, porus excretorius 6 and the liquid injection hole 5 of service cylinder 4, is injected by injecting hole 2
Nitrogen promote direction from the first wiper group 13 to ball collecting chamber 10 run, and the first wiper group 13 with it is adjacent
The second wiper group 13 between set cleaning fluid length more than the nitrogen promote the first wiper group 13
The distance of operation, is arranged such, it is ensured that cleaning fluid 14 can full packages filling, do not interspaced at the top of pipeline 7；
Step 43, closes injecting hole 2 and stops nitrogen injection, and opening porus excretorius 6 makes service 4 pressure of cylinder to normal
Pressure, opens the service blind plate 1 of cylinder 4, and the second wiper group 13 is pushed at the concentric reducer of the service cylinder 4,
Close the blind plate 1 of service cylinder 4；
Step 44, cleaning fluid 14 is filled by liquid injection hole 5, until porus excretorius 6 has cleaning fluid 14 to overflow,
Porus excretorius 6 is closed, continues to finish the remainder filling of the cleaning fluid 14 for setting, and close fluid injection
Hole 5；
Step 45, direction of the second wiper group 13 to ball collecting chamber 10 is promoted by the nitrogen injection of injecting hole 2
Operation, until the purging system fully enters pipeline 7, opens the injecting compressed air of injecting hole 2 and promotes cleaning
System carries out washing and cleaning operation in the pipeline 7.
Wherein, the first wiper group 13 and the second wiper group 13 include at least one wiper.If
Purging system includes same road during more than two wiper groups 13, implementation steps and including two wiper groups 13
Reason, according to step 41-45, sequentially pushes next wiper group 13, until the wiper group of purging system
13 fully enter pipeline 7.
Further, the nitrogen in step 42 promotes the distance of the operation of the first wiper group 13, is
Service life according to nitrogen is obtained, service life t=(P2 × V2)/(Q × P1) of the nitrogen；
Wherein, the pressure in P1- source nitrogens exit, Q- nitrogen flows, the numerical value of the P2- service pressure gauges 3 of cylinder 4,
The corresponding volume of pipeline 7 of the setting range ability of the first wipers of V2- group 13.
Wherein, nitrogen is controlled to promote the method for the range ability of wiper group 13 to be：Exported by measuring source nitrogen
The pressure P1 and nitrogen flow Q at place, the numerical value P2 of the service pressure gauge 3 of cylinder 4, and calculate the first wiper group
The corresponding volume V2 of pipeline 7 of range ability of 13 settings, based on The Ideal-Gas Equation, derives nitrogen
Service life t=(P2 × V2)/(Q × P1), it is clear to realize by the control nitrogen supply (NS) amount of nitrogen service life
The control of the range ability of pipe device group 13.
Preferably, step 5, specifically includes：
Step 51, during purging system carries out washing and cleaning operation in the pipeline 7, opens steam vent
11 and mudhole 12, close steam vent 11 when residue 15 starts to be discharged from mudhole 12 in pipeline 7；
Step 52, after indicator 9 indicates the first wiper group 13 to pass through completely, closes mudhole 12 and stops
Only blowdown；
Step 53, opening outage 8 carries out the reception of cleaning fluid 14, after cleaning fluid 14 is received, closes
Outage 8 is closed, mudhole 12 is opened and is continued blowdown, when indicator 9 indicates the second wiper group 13 to lead to completely
Later, close mudhole 12 and stop blowdown；
Step 54, makes the wiper in the purging system fully enter ball collecting chamber 10；
Step 55, closes injecting hole 2 and stops compressed air injection, while porus excretorius 6 and steam vent 11 are opened,
By the pressure release of pipeline 7 to normal pressure, and the blind plate 1 of ball collecting chamber 10 is opened, the institute in disposable recovery and rinsing system
There is wiper.
In the embodiment of the present invention, the purging system includes two wiper groups 13, if purging system includes
During more than two wiper groups 13, implementation steps and including two wiper groups 13 as a same reason, according to step
51-53, sequentially next wiper group 13 is moved to the direction of ball collecting chamber 10, until the wiper of purging system
Group 13 fully enters pipeline 7.
Further, step 6, specifically includes：
Indicator 9 is removed, ball collecting chamber 10 and service cylinder 4 is cut back；
By visual observation, the inside of pipeline 7 is wiped or the middle part of pipeline 7 is excavated disconnected pipe and checked inside pipeline 7
Residue 15, and cleaning fluid 14 to receiving carries out pollutant concentration test, after quantitative assessment pipeline 7 is cleaned
Effect.
Wherein, in the present embodiment, dismounting is connected to valve, indicator 9 on pipeline 7 and receiving ball tube 4,
Receiving ball tube 4 is reclaimed in cutting；The two ends of pipeline 7 after cutting service cylinder 4 are carried out visually or inside pipeline 7
Smear test, the effect after checking cleaning is excavated disconnected pipe to the middle part of pipeline 7 and is checked if necessary.
Meanwhile, the cleaning fluid 14 to receiving carries out live or laboratory pollution thing concentration determination, quantitative assessment cleaning
Effect afterwards.In the present embodiment, also including site recovery, specifically include：One-shot job site recovery, opens
Operating pit backfill is dug, surface vegetation recovers.
Preferably, the cleaning fluid is aqua type cleaning fluid and/or flushing water.
The embodiment of the present invention is illustrated using the crude oil pipeline 7 of an operation 40 years as pipeline to be cleaned 7,
The cleaning method of 7 residue of discarded oil-gas pipeline 15 is specifically included：
The investigation present situation of pipeline 7 to be cleaned：Consult the design of pipeline 7 and operation maintenance data, it is thus understood that pipeline 7
Wall thickness 8mm, bore 720mm, the operating pressure before stopping transportation is 4Mpa, and Daqing crude oil was conveyed before 2007,
Russian oil is conveyed after 2007, oil extraction pipeline purging had been carried out using nitrogen promotion leather cup wiper in 2014,
Stopping transportation is sealed wait up for safekeeping and scraps disposal afterwards.Whole piece pipeline has been segmented into multistage due to pipe sampling of relocating and break,
According to information above, determine the present embodiment cleaning one section is pipeline 7 2km long, possesses logical purging system
Condition.
According to residue 15 in the pipeline 7, the configuration of corresponding purging system is determined：Pipeline section to be cleaned is cut
Pipe sampling result shows that the inwall of pipeline 7 remains crude oil and wax, and average thickness 4-6mm, wherein wax are hard
The oily wax of matter celebrating, oil is Daqing oil.For the residue 15, selection aqua type cleaning fluid 14, and tested
Room simulation test, specify that the concentration ratio and antistatic additive of host and the proportioning of emulsifying agent, use
Purging system sequentially include the first wiper group 13, aqua type cleaning fluid 14, the second wiper group 13, punching
Wash water and the 3rd wiper group 13, wherein, in the embodiment of the present invention, each wiper group 13 is using single clear
Pipe device, i.e., the first wiper group 13 is single steel wire straight-plate of brush wiper, the He of the second wiper group 13
3rd wiper group 13 is single leather cup wiper, and the length of each wiper group 13 is 1.1m, water
The consumption of fundamental mode cleaning fluid 14 is 6t, and flushing water consumption is 8t.Wherein, steel wire straight-plate of brush wiper is main
The oil and wax of cleaning inside pipe wall residual, make its thickness be reduced within 1mm, then by aqua type cleaning fluid 14
Dissolving, last flushing water is rinsed to the inwall of pipeline 7, so as to reach state of the oil-free without wax.Leather cup
Wiper mainly plays sealing and scraping, and each wiper magnitude of interference is the 3% of caliber.
Construction site prepares, and specifically includes：It is determined that the installation site of service cylinder 4 and ball collecting chamber 10, is managed
The operating pit of road 7 is excavated, and opens up beta site for the storage of vehicle and equipment, the setting of place warning line.
Service cylinder 4 and ball collecting chamber 10 are respectively mounted at the two ends of the pipeline 7：In the weldering of the two ends of pipeline to be cleaned 7
Receive cylinder 4 and ball collecting chamber 10, wherein the service bore 810mm of cylinder 4, is docked by concentric reducer with pipeline 7,
1.8m long.
Pressure gauge 3 is installed on service cylinder 4；And the injecting hole 2 of bore 100mm is set, for nitrogen and
The injection of compressed air, is provided with valve on injecting hole 2, in the present embodiment, using gate valve；Ball collecting chamber 10
Length 4m, can accommodate 3 wipers for constituting purging system, and bore 810mm, ball collecting chamber 10 passes through big
Microcephaly is docked with pipeline 7.
The steam vent 11 of bore 50mm and the mudhole 12 of bore 300mm, steam vent are provided with ball cylinder
11 are provided with valve, and in the present embodiment, using ball valve, mudhole 12 is connected by elbow and flange with valve
Connect.
Liquid injection hole 5 and porus excretorius 6 are being set near the end of pipeline 7 of service cylinder 4, are being specifically included：In service
The liquid injection hole 5 of diameter 100mm and the porus excretorius 6 of diameter 50mm, liquid injection hole are opened up on the pipeline 7 of cylinder 4
5 is 3m with the distance of the junction of pipeline to service cylinder 4, more than wiper group 13 most long in purging system
Length 1.1m, installs gate valve on liquid injection hole 5, porus excretorius 6 is arranged on against liquid injection hole 5 and away from service cylinder
4 setting, with liquid injection hole 5 at a distance of 300mm, mounting ball valve on porus excretorius 6.
Outage 8 is being set near the end of pipeline 7 of ball collecting chamber 10, is being specifically included：Receiving the pipeline at ball end
Outage 8 is opened up on 7, and gate valve is installed, the junction of outage 8 to ball collecting chamber 10 and pipeline to being 3m,
More than the length 1.1m of the wiper group 13 most long of purging system；In outage 8 near the side of ball collecting chamber 10
Pipeline 7 on set indicator 9, wherein, indicator 9 using mechanical tube cleaner pass through indicator 9.
The purging system is sent from service cylinder 4 carries out washing and cleaning operation to the pipeline 7, by each
The wiper of wiper group 13, cleaning fluid 14 are put into pipeline 7, form purging system, and use gas
Purging system operation is promoted, is specifically included：
The steam vent 11 on the ball collecting chamber 10 is opened, in the case of the normal pressure of pipeline 7, that is, is served a ball on cylinder 4
The reading of pressure gauge 3 be 0, open service cylinder 4 blind plate 1, steel wire straight-plate of brush wiper is put into service
Cylinder 4, is then advanced it at the concentric reducer of service cylinder 4 by the steel pipe of certain length；
The valve of the blind plate 1, porus excretorius 6 and liquid injection hole 5 of service cylinder 4 is closed, the valve of injecting hole 2 is opened,
Steel wire straight-plate of brush wiper is promoted to run 10m by the nitrogen injection of injecting hole 2.With water base in the present embodiment
Type cleaning fluid 14 is 6t, and about 15m is long in pipeline 7, and steel wire straight-plate of brush wiper range ability is less than water
The length of fundamental mode cleaning fluid 14, the service life for controlling steel wire straight-plate of brush wiper to run 10m is 38 seconds,
Wherein, source nitrogen outlet pressure is 0.5MPa, and flow is 0.005m3/ s, the operation of steel wire straight-plate of brush wiper
The pressure of Shi Faqiu 4 is 0.025MPa, and 10m length tube capacity is 3.8m3, can be calculated service life is
38s, wherein, service life is calculated by below equation, t=(P2 × V2)/(Q × P1)；
Wherein, the pressure in P1- source nitrogens exit, Q- nitrogen flows, the numerical value of the P2- service pressure gauges 3 of cylinder 4,
The corresponding volume of pipeline 7 of V2- steel wire straight-plate of brush wiper setting range ability.
Close injecting hole 2 valve stop nitrogen injection, open porus excretorius 6 valve by serve a ball cylinder 4 pressure
Power is discharged to normal pressure, that is, the reading of pressure gauge 3 of cylinder 4 of serving a ball is 0.The blind plate 1 of service cylinder 4 is opened, by the
The leather cup wiper of two wiper groups 13 is put at the service concentric reducer of cylinder 4, closes the blind plate 1 of service cylinder 4.
The valve of liquid injection hole 5, filling aqua type cleaning fluid 14 are opened, until porus excretorius 6 discharges cleaning fluid 14,
The valve of porus excretorius 6 is then shut off, continues to finish the filling of remaining cleaning fluid 14, finally close liquid injection hole 5
Valve.
Open the leather cup wiper operation 15m that the valve nitrogen injection of injecting hole 2 promotes the second wiper group 13；
With flushing water it is 8t in the present embodiment, about 20m is long in pipeline 7, the leather cup pigging of the second wiper group 13
Device range ability is less than flushing water length.Control the confession of the leather cup wiper operation 15m of the second wiper group 13
The gas time is 70 seconds, wherein, source nitrogen outlet pressure is 0.5MPa, and flow is 0.005m3/ s, the second pigging
The pressure of service cylinder 4 is 0.03MPa when the leather cup wiper of device group 13 runs, and 15m length tube capacity is 5.8m3,
Service life be can be calculated for 69.5s.
Close injecting hole 2 valve stop nitrogen injection, open porus excretorius 6 valve by serve a ball cylinder 4 pressure
Power is discharged to normal pressure, that is, the reading of pressure gauge 3 of cylinder 4 of serving a ball is 0.The blind plate 1 of service cylinder 4 is opened, by the
The leather cup wiper of three wiper groups 13 is placed at the concentric reducer of service cylinder 4, closes the blind plate of service cylinder 4
1。
The valve of liquid injection hole 5 is opened, filling flushing water to porus excretorius 6 is discharged water, is then shut off porus excretorius 6
Valve, continues to finish the filling of remaining water, finally closes the valve of liquid injection hole 5.
Open the valve injecting compressed air of injecting hole 2 and promote purging system operation.
From recovery and rinsing system at ball collecting chamber 10, during purging system runs, carry out the residue 15 of pipeline 7,
The reception of cleaning fluid 14, finally carries out the recovery of wiper, specifically includes：
During purging system carries out washing and cleaning operation in the pipeline 7, the row on ball collecting chamber 10 is opened
The valve of stomata 11 and mudhole 12, and the preparation for receiving discharge sump oil is carried out, when the oil of inside pipe wall residual
The valve of steam vent 11 is closed when starting and discharged on a small quantity from mudhole 12 with wax.
After passing through completely by the index strip steel wire straight-plate of brush wiper of indicator 9, the valve of mudhole 12 is closed
Stop blowdown.
Opening the valve of outage 8 carries out the reception of aqua type cleaning fluid 14, after cleaning fluid 14 is received,
The valve of outage 8 is closed, the valve for opening mudhole 12 continues oil extraction and wax, is indicated when by indicator 9
After the leather cup wiper of the second wiper group 13 passes through, close the valve of mudhole 12 and stop blowdown.
The collection that the valve of outage 8 is rinsed water is opened, flushing water is excluded after finishing, and closes outage 8
Valve, opens the valve of mudhole 12 and continues oil extraction and wax, until oil and wax are all discharged, whole wipers enter
Enter ball collecting chamber 10, close the valve of mudhole 12 and stop blowdown.
The valve for closing injecting hole 2 on service cylinder 4 stops compressed air injection, while opening on ball collecting chamber 10
Steam vent 11 and service end pipe road 7 on the valve of porus excretorius 6 pressure release to normal pressure is carried out to pipeline 7, i.e.,
The reading of pressure gauge 3 is 0；Open the blind plate 1 of ball collecting chamber 10, reclaim steel wire straight-plate of brush wiper, two
Leather cup wiper.
Carry out recovery treatment to the pipeline 7, and check the cleaning performance of the pipeline 7, specifically include：
Dismounting is connected to valve on pipeline 7, receiving ball tube 4 and ball collecting chamber 10, by indicator 9 and defeated
The pipeline 7 of aqua type cleaning fluid 14 and flushing water is sent, receiving ball tube 4 is reclaimed in cutting；To cutting service cylinder 4
The two ends of pipeline 7 afterwards are visually inspected, and as a result show tube wall oil-free without wax.Meanwhile, the flushing to receiving
Water carries out laboratory petroleum content concentration determination, is as a result 29mg/L, and cleaning performance is good, after cleaning
Pipeline 7 can direct gas flame cuttiug.
Site recovery, specifically includes：One-shot job site recovery, excavates operating pit backfill, and surface vegetation is extensive
It is multiple.
The present invention is independent of the pump and receiving ball tube facility of original pipe-line system, can meet the discarded of different situations
Pipeline cleaning needs, and ball collecting chamber and service barrel structure are simple, is easy to processing and scene to apply, useless after cleaning
Liquid adjustable point is accurately reclaimed, and site operation is convenient, and multiple wipers are disposably reclaimed, it is not necessary to frequent open-blind
Plate, processing safety and efficiency high, cleaning fluid and flushing water can full packages filling, do not left a blank at the top of pipeline
Gap, so as to ensure that inner-walls of duct can be cleaned comprehensively, cleaning it is practical, to the structure of purging system
Into without limitation, it is allowed to several monomer wipers or wiper group (multiple continuous wipers) and one section
Cleaning fluid or multistage cleaning fluid form purging system, so as to meet the cleaning demand of different type residue.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all of the invention
Within spirit and principle, any modification, equivalent substitution and improvements made etc. should be included in of the invention
Within protection domain.
Claims (10)
1. a kind of discarded oil-gas pipeline residue cleaning method, it is characterised in that the discarded oil-gas pipeline is residual
Staying thing cleaning method includes：
Step 1, investigates pipeline present situation to be cleaned；
Step 2, according to residue in the pipeline, determines the configuration of corresponding purging system；
Step 3, service cylinder and ball collecting chamber are respectively mounted in the pipe ends；
Step 4, the purging system is sent from service cylinder carries out washing and cleaning operation to the pipeline；
Step 5, the purging system is reclaimed from the ball collecting chamber；
Step 6, recovery treatment is carried out to the pipeline, and check the cleaning performance of the pipeline.
2. discarded oil-gas pipeline residue cleaning method according to claim 1, it is characterised in that institute
Step 1 is stated, is specifically included：
Consult design and the operation maintenance data of pipeline, obtain the wall thickness of the pipeline, bore, bearing capacity,
Pumped (conveying) medium situation, pipeline purging or pigging situation relevant information, judge whether the purging system can pass through
The pipeline.
3. discarded oil-gas pipeline residue cleaning method according to claim 2, it is characterised in that institute
Purging system is stated including at least two wiper groups, the outer peripheral edge of each wiper group with the pipeline in
Wall is affixed, and is provided with cleaning fluid between the adjacent wiper group of each two, and each wiper group includes being affixed
At least one wiper.
4. discarded oil-gas pipeline residue cleaning method according to claim 3, it is characterised in that institute
Step 2 is stated, is specifically included：
On the pipeline, pipe sampling of breaking, thickness and composition to residues inside are analyzed, and determine structure
Into the wiper type and cleaning fluid type of purging system, and cleaning fluid consumption.
5. discarded oil-gas pipeline residue cleaning method according to claim 4, it is characterised in that institute
Step 3 is stated, is specifically included：
Service cylinder and ball collecting chamber are respectively welded in the pipe ends；
Pressure gauge is installed on the service cylinder, and injecting hole is set；
Mudhole and steam vent be set on the ball collecting chamber, and the ball collecting chamber length more than or equal to described
The total length of all wipers in purging system；
Liquid injection hole and porus excretorius be set in the pipe end near service cylinder, the connection of service cylinder and pipeline
Locate the distance to the liquid injection hole, more than the length of wiper group most long in the purging system, and the note
Fluid apertures is located between the porus excretorius and service cylinder；
In the pipe end setting outage near ball collecting chamber, the junction of the ball collecting chamber and pipeline is described in
The distance of outage, more than the purging system in wiper group most long length；
Indicator is set on pipeline between the outage and the ball collecting chamber.
6. discarded oil-gas pipeline residue cleaning method according to claim 5, it is characterised in that institute
Step 4 is stated, is specifically included：
Step 41, the purging system includes two wiper groups, opens the steam vent on the ball collecting chamber,
In the case of pipeline normal pressure, the blind plate of service cylinder is opened, the first wiper group in purging system is promoted
To the concentric reducer of the service cylinder；
Step 42, closes blind plate, porus excretorius and the liquid injection hole of service cylinder, is promoted by injecting hole nitrogen injection
Direction from first wiper group to ball collecting chamber run, and the first wiper group and the second adjacent wiper group it
Between set cleaning fluid length more than the nitrogen promote the first wiper group operation distance；
Step 43, closes injecting hole and stops nitrogen injection, and opening porus excretorius makes service cylinder pressure to normal pressure, beats
Exploitation ball cylinder blind plate, the second wiper group is pushed at the concentric reducer of the service cylinder, closes service cylinder
Blind plate；
Step 44, cleaning fluid is filled by liquid injection hole, until porus excretorius has cleaning fluid to overflow, closes porus excretorius,
Continue to finish the remainder filling of the cleaning fluid for setting, and close liquid injection hole；
Step 45, promotes the second wiper group to be run to the direction of ball collecting chamber, directly by injecting hole nitrogen injection
Pipeline is fully entered to the purging system, injecting hole injecting compressed air is opened and is promoted purging system described
Washing and cleaning operation is carried out in pipeline.
7. discarded oil-gas pipeline residue cleaning method according to claim 6, it is characterised in that step
The nitrogen in rapid 42 promotes the distance of the first wiper group operation, is obtained according to the service life of nitrogen,
Service life t=(P2 × V2)/(Q × P1) of the nitrogen；
Wherein, the pressure in P1- source nitrogens exit, Q- nitrogen flows, the numerical value of P2- service cylinder pressure gauges,
The corresponding piping volume of the first wipers of V2- group setting range ability.
8. discarded oil-gas pipeline residue cleaning method according to claim 7, it is characterised in that institute
Step 5 is stated, is specifically included：
Step 51, during purging system carries out washing and cleaning operation in the pipeline, open steam vent and
Mudhole, steam vent is closed when residue starts and discharged from mudhole in pipeline；
Step 52, after indicator indicates the first wiper group to pass through completely, closes mudhole and stops blowdown；
Step 53, opening outage carries out the reception of cleaning fluid, after cleaning fluid is received, closes outage,
Open mudhole and continue blowdown, after indicator indicates the second wiper group to pass through completely, close mudhole and stop
Only blowdown；
Step 54, makes the wiper in the purging system fully enter ball collecting chamber；
Step 55, closes injecting hole and stops compressed air injection, while opening porus excretorius and steam vent, will manage
Road pressure release opens the blind plate of ball collecting chamber to normal pressure, reclaims wiper.
9. discarded oil-gas pipeline residue cleaning method according to claim 8, it is characterised in that institute
Step 6 is stated, is specifically included：
Indicator is removed, ball collecting chamber and service cylinder is cut back；
By visual observation, pipeline inside wipes or disconnected pipe checks pipeline residues inside, and the cleaning to receiving
Liquid carries out pollutant concentration test, and evaluates the effect after pipeline cleaning.
10. discarded oil-gas pipeline residue cleaning method according to claim 9, it is characterised in that
The cleaning fluid is aqua type cleaning fluid and/or flushing water.
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| 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 |
| CN108672424A (en) * | 2018-05-14 | 2018-10-19 | 中国石油大学(华东) | A kind of sequentially-fed more pumps pipe cleaning device automatically |
| CN108994015A (en) * | 2018-09-10 | 2018-12-14 | 李得恩 | The cleaning method of pipeline |
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| 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 |
| CN108672424A (en) * | 2018-05-14 | 2018-10-19 | 中国石油大学(华东) | A kind of sequentially-fed more pumps pipe cleaning device automatically |
| CN108994015A (en) * | 2018-09-10 | 2018-12-14 | 李得恩 | The cleaning method of pipeline |
| CN109530353A (en) * | 2018-10-10 | 2019-03-29 | 包头钢铁（集团）有限责任公司 | Ore slurry pipeline and the method for not stopping pressure pipe cleaning emitting operation |
| CN109990139A (en) * | 2019-04-17 | 2019-07-09 | 海洋石油工程股份有限公司 | A method of it is replaced applied to crude oil of offshore platform standpipe |
| CN109985868A (en) * | 2019-04-26 | 2019-07-09 | 马付林 | Oil pipeline inner wall cleaning oil pollution method |
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| CN111974771B (en) * | 2019-05-23 | 2022-06-07 | 杭州优益洁保洁服务有限公司 | Cleaning method for central air-conditioning air system pipeline |
| CN111974771A (en) * | 2019-05-23 | 2020-11-24 | 杭州优益洁保洁服务有限公司 | Cleaning method for central air-conditioning air system pipeline |
| CN110687258A (en) * | 2019-11-08 | 2020-01-14 | 中石化第十建设有限公司 | Method for detecting cleaning cleanliness of crude oil pipeline |
| CN111451225A (en) * | 2020-05-12 | 2020-07-28 | 北京埃尔德油气技术开发有限公司 | Long-distance pipeline cleaning operation method |
| CN111451225B (en) * | 2020-05-12 | 2023-10-31 | 北京埃尔德油气技术开发有限公司 | Pipeline cleaning operation method for long-distance pipeline |
| CN114392992A (en) * | 2021-12-21 | 2022-04-26 | 烟台杰瑞石油装备技术有限公司 | Oil and gas pipeline cleaning operation equipment and operation method |
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| CN114472386A (en) * | 2022-01-25 | 2022-05-13 | 无锡贝斯柯自动化科技有限公司 | Intelligent cleaning method and system for granular powder conveying device |
| CN114472386B (en) * | 2022-01-25 | 2023-09-15 | 无锡贝斯柯自动化科技有限公司 | Intelligent cleaning method and system for particle powder conveying device |
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| CN114769243B (en) * | 2022-04-28 | 2024-07-16 | 上海能源建设工程设计研究有限公司 | Temporary pipe cleaning device for high-pressure natural gas pipeline |
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Effective date of registration: 20211110 Address after: Room 08-10, 6 / F, block a, No. 5, Dongtucheng Road, Chaoyang District, Beijing 100013 Patentee after: National Petroleum and natural gas pipeline network Group Co.,Ltd. Address before: 100007 China Petroleum Building, No. 9, Dongzhimen North Street, Dongcheng District, Beijing Patentee before: PetroChina Company Limited |
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