CN102172572B - Inner wall washing and coating corrosion resisting method for manifold pipelines in oil fields - Google Patents

Inner wall washing and coating corrosion resisting method for manifold pipelines in oil fields Download PDF

Info

Publication number
CN102172572B
CN102172572B CN 201110062387 CN201110062387A CN102172572B CN 102172572 B CN102172572 B CN 102172572B CN 201110062387 CN201110062387 CN 201110062387 CN 201110062387 A CN201110062387 A CN 201110062387A CN 102172572 B CN102172572 B CN 102172572B
Authority
CN
China
Prior art keywords
oil field
transportation pipeline
field gathering
pipelines
coating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201110062387
Other languages
Chinese (zh)
Other versions
CN102172572A (en
Inventor
周魁修
王光明
蒋学军
童依勤
赵小玲
汤燕
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Petroleum and Chemical Corp
Sinopec Jiangsu Oilfield Co
Original Assignee
China Petroleum and Chemical Corp
Sinopec Jiangsu Oilfield Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Petroleum and Chemical Corp, Sinopec Jiangsu Oilfield Co filed Critical China Petroleum and Chemical Corp
Priority to CN 201110062387 priority Critical patent/CN102172572B/en
Publication of CN102172572A publication Critical patent/CN102172572A/en
Application granted granted Critical
Publication of CN102172572B publication Critical patent/CN102172572B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Cleaning In General (AREA)

Abstract

The invention discloses an inner wall washing and coating corrosion resisting method for manifold pipelines in oil fields, which relates to the technical field of cleaning and anticorrosion treatment of the manifold pipelines in oil fields. Based on an aerodynamic principle, the method first clean dust and scale on the inner walls of pipelines by using a physical process and then perform coating anticorrosion treatment on the inner walls of the pipelines; and the method has the characteristics of complete pipeline cleaning and durable coating. The construction length at one time is about 3 kilometers. A cyclostrophic flow-method pipeline inner wall cleaning and corrosion resisting technique can be widely used in new (old) manifold pipelines and water injection pipelines in oil fields, is expected to make an important breakthrough in the field of cleaning and corrosion resisting of pipelines in oil fields, can descale and resist corrosion of small-caliber pipelines and can fill the blank in the field of cleaning and corrosion resisting of the pipelines in oil fields.

Description

A kind of oil field gathering and transportation pipeline inner wall washing and coating antiseptic method
Technical field
The present invention relates to cleaning, the preservative treatment technology field in oilfield technology field, particularly oil field gathering and transportation pipeline.
Background technology
At present both at home and abroad to the scale removal in the pipeline, aseptic technic, on principle, can be divided into two classes: i.e. Physical and chemical method.Concrete have chemical method (pickling etc.), vibratory drilling method (ultrasonic wave etc.), electromagnetic method (electric shock, negative electrode, magnetization etc.), lining method (intert soft, hard tube liner) and a Mechanical Method (built-in tool, robot etc.).But can pigging can the corrosion-resistant technology mainly be two large class methods again: lining method and Mechanical Method.But these two large class methods have all run into the four problems that is difficult to overcome: pipeline turning; Pipeline lightens; Pipeline is vertical; Small-bore pipeline.The flow rotation method has solved this four problems effectively.Can repair and improve into to the in-service pipeline inwall of various uses the technology of high-quality multiple tube.
The water flood recovery technology is one of domestic each elephant main method of improving oil recovery factor, and along with the growth of oilfield exploitation time, injection water quality constantly worsens, and corrodes day by day seriously, and the loss that causes makes us startling.Have in the waterflood-transmission line more than 90% is to scrap because of corrosion and scaling.Each elephant of the whole nation amounts to up to more than 1,500,000,000 meters 1,500 hundred million yuan more than to loss in this respect in the end of the year 2008.
Clean in the Jiangsu oilfield pipeline at present and be physical cleaning: the PIG high-pressure water jet; Chemical cleaning: acid, alkali, table agent alive; Composite cleaning: physical chemistry combination.Pipeline internal corrosion mainly adopts the squeezing and coating formula.But no matter adopt above technique is to clean or interior anticorrosion being difficult to gets a desired effect, and often causes not thorough, the interior anticorrosive coating film of cleaning and descaling inhomogeneous.
Summary of the invention
The object of the invention is to study the thorough scale removal of a kind of energy, is formed uniformly oil field gathering and transportation pipeline inner wall washing and the coating antiseptic method of interior anticorrosive coating film.
The present invention includes following steps:
1) blows out foreign material in the oil field gathering and transportation pipeline with compressed air;
2) mix with water with compressed air oil field gathering and transportation pipeline is purged;
3) the compressed air entrained sand particle that advances with rotation purges the oil field gathering and transportation pipeline inwall;
4) with compressed air oil field gathering and transportation pipeline is purged;
5) mix with paint thinner with compressed air the oil field gathering and transportation pipeline inwall is cleaned;
6) in oil field gathering and transportation pipeline, form whirlwind with compressed air and mix with coating, make coating be bonded in equably the oil field gathering and transportation pipeline inwall;
7) ventilate in oil field gathering and transportation pipeline with compressed air, make paint solidification.
Described sand grains is that hardness is lower than steel pipe and has water caltrop.
The present invention adopts aerodynamic principle, again inner-walls of duct is carried out film anticorrosion with physical method removing inner-walls of duct rust, dirt, can play the purpose of enhanced protection.Technique functions comes from the cyclone phenomenon of the Nature, afield, in the desert, when air-flow reaches certain speed, just form whirlwind, with sandstone, article volume heavenwards.According to the principle of this natural phenomena, the present invention is in pipeline, and artificial make " cyclone " adds the band sandstone and removes the inner-walls of duct fouling and carry out coating again and film.
Swirling eddy is through experimental results demonstrate, pneumatic phenomenon generally has three kinds of situations, curved undulation during low speed in the pipeline; Linearly move during high speed; Be during middling speed and rotatablely move.The present invention adopts aerodynamic principle, and to rotate the air-flow entrained sand particle that advances, the principle of rolling friction is removed rust deposite in the pipe, and residue advances coating with whirlwind again, makes coating uniform (rotary centrifugal force effect) be bonded in inner-walls of duct.The sand grains one of selecting is that hardness is lower than steel pipe, the 2nd, and quality small band water caltrop, thus minimum to the tube wall damage during rolling friction, and can both remove the residue in the tiny jog of inner-walls of duct, lay a solid foundation for filming.
The present invention has the pigging completeness and persistent characteristics of filming.The about 3km of one-off construction length.Swirling eddy method inner-walls of duct cleans and aseptic technic can be widely used in defeated, the filling pipe of oil field new (old) collection, to produce important breakthrough in oil field pipe cleaning and corrosion-resistant field, to the anticorrosion blank that will fill up oil field pipe cleaning and corrosion-resistant field of small-bore pipeline scale removal.
The concrete characteristics of the present invention have:
1, no matter the trend of pipeline no matter how to change namely pipeline be level, turning, vertical or tilt trend, also no matter same pipeline whether reducing (from change to greatly little or from little change to large) or have can carry out scale removal and film branched being in charge of.
2, because the present invention has realized non-excavation, need not destroy characteristics and the effect of existing facility uniqueness, construction is flexible, and efficiency of construction has improved tens times, and construction cost has then descended more than 50%.
3, the abrasive material of scale removal and inner-wall paint can multifariously be selected according to purposes and demand, have created the popularity of suitable application area.
4, the anticorrosion blank of filling up the oil field of small-bore pipeline scale removal has especially been simplified again simultaneously the recovery technique of pipeline greatly.
5, the application pipeline life forecast of swirling eddy eliminating sludge in pipe technology for coating is 15 years, with do not carry out the pipeline that scale removal films and compare, prolong 2 times service life, pipeline after simultaneously scale removal is filmed has reduced the coefficient of friction of liquid flow in the pipeline, reduced flow resistance, reduce the pressure reduction of pipeline front and back, improved injection water quality, reduced the electricity charge.
Compressed-air actuated pressure is 0.5~3MPa in the described step 1), from low to high oil field gathering and transportation pipeline is purged, until no-sundries blows out.
Step 2 of the present invention) compressed air pressure is that 2.7MPa~3MPa, flow velocity are 40m/s in.
Compressed-air actuated pressure is 2.7MPa~3MPa in the step 3), flow velocity 40m/s.
The pressure of whirlwind in oil field gathering and transportation pipeline is 2.7 MPa~3 MPa in the step 6), and gas flow is at 3.03 m 3~3.46m 3
The specific embodiment
One, is connected to an end of one section oil field gathering and transportation pipeline with air compressor machine.
Two, cleaning pipeline
Cleaning length of pipeline 575m utilizes compressed air to remove the interior foreign material of pipe, until no-sundries blows out.Purging should be from 0.5-3MPa pressure from low to high, and the foreign material of avoiding high pressure to wash away bringing stop up.The recording compressed machine is made 20m 3Air accumulator is the needed time under different pressures, the outflow situation of well head.
Three, derusting by sandblasting
1, at pressure 2.7MPa~3MPa, add water in the situation of flow velocity 40m/s oil field gathering and transportation pipeline is purged 1 time, amount of water 40kg, air outlet valve and outlet valve are opened simultaneously, and flowing water Valve is in half-open position.If pressure is lower than claimed range, need valve is in time closed operation more than after pressure gos up, continuing.
2, at pressure 2.7MPa~3MPa, add sand grains in the situation of flow velocity 40m/s to oil field gathering and transportation pipeline scale removal 3 times, add successively sand amount 40kg, 60kg, 80kg, sand grains requires: hardness is lower than steel pipe, has water caltrop.Air outlet valve is opened simultaneously with the valve that shakes out, and the valve that shakes out is in half-open position.If pressure is lower than claimed range, need valve is in time closed operation more than after pressure gos up, continuing.
3, open first air valve and drive again the sand valve, or carry out synchronously, avoid sand plug.
4, observe the descaling and derusting situation of the port of export, if having no the metal true qualities, consider to repeat above step, add greatly sand amount.Stop above operation if see the metal true qualities.
Four, pipeline cleans
Purge with compressed air first, the coating special diluting agent with some mixes the floating dust of thoroughly removing the pipeline inwall with compressed air again, has or not moisture to blow out with the way inspection outlet of estimating and gets final product.
Five, spraying
1, calculates the coating consumption by length of pipeline, press the pipeline inner surface and prepare coating in 180 g/ms (150kg), join curing agent according to the coating operation instruction, fully stir with machinery.Should spray immediately after coating stirs, avoid the coating precipitation.
2, the coating that stirs is injected hopper, the ventilation spraying.Because coating precipitates segregation easily, thus the time that the coating in-line stops unsuitable long (not above 3~5 minutes), so venting pressure at 2.7 MPa~3 MPa, gas flow is at 3.03 m 3~3.46m 3In the scope.Should comprehensively determine the spraying venting pressure and progressively improve pressure until coating sprays fully according to logical sand and rinse liquid outlet time.Check each test specimen, answer no sag, smooth without wave, smooth surface.
Six, post-purge
Should utilize immediately compressed air in pipe, to ventilate after spraying is finished, be beneficial to inner tube coating and solidify.The post-purge venting pressure is unsuitable excessive, and avoiding producing coating has the wave phenomenon, and the outlet feel has air-flow to go out to get final product.Until dry up (hand is without seal).

Claims (5)

1. an oil field gathering and transportation pipeline inner wall washing and coating antiseptic method is characterized in that may further comprise the steps:
1) blows out foreign material in the oil field gathering and transportation pipeline with compressed air;
2) mix with water with compressed air oil field gathering and transportation pipeline is purged;
3) the compressed air entrained sand particle that advances with rotation purges the oil field gathering and transportation pipeline inwall; The hardness of described sand grains is lower than steel pipe and has water caltrop;
4) with compressed air oil field gathering and transportation pipeline is purged;
5) mix with paint thinner with compressed air the oil field gathering and transportation pipeline inwall is cleaned;
6) in oil field gathering and transportation pipeline, form whirlwind with compressed air and mix with coating, make coating be bonded in equably the oil field gathering and transportation pipeline inwall;
7) ventilate in oil field gathering and transportation pipeline with compressed air, make paint solidification.
2. according to claim 1 described oil field gathering and transportation pipeline inner wall washing and coating antiseptic method is characterized in that compressed-air actuated pressure is 0.5~3MPa in the described step 1), from low to high oil field gathering and transportation pipeline are purged, until no-sundries blows out.
3. according to claim 1 described oil field gathering and transportation pipeline inner wall washing and coating antiseptic method is characterized in that described step 2) in compressed air pressure be that 2.7MPa~3MPa, flow velocity are 40m/s.
4. according to claim 1 described oil field gathering and transportation pipeline inner wall washing and coating antiseptic method is characterized in that compressed-air actuated pressure is 2.7MPa~3MPa in the described step 3), flow velocity 40m/s.
5. according to claim 1 described oil field gathering and transportation pipeline inner wall washing and coating antiseptic method is characterized in that the pressure of whirlwind in oil field gathering and transportation pipeline is 2.7 MPa~3 MPa in the described step 6), and gas flow is at 3.03 m 3~3.46m 3
CN 201110062387 2011-03-16 2011-03-16 Inner wall washing and coating corrosion resisting method for manifold pipelines in oil fields Expired - Fee Related CN102172572B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201110062387 CN102172572B (en) 2011-03-16 2011-03-16 Inner wall washing and coating corrosion resisting method for manifold pipelines in oil fields

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201110062387 CN102172572B (en) 2011-03-16 2011-03-16 Inner wall washing and coating corrosion resisting method for manifold pipelines in oil fields

Publications (2)

Publication Number Publication Date
CN102172572A CN102172572A (en) 2011-09-07
CN102172572B true CN102172572B (en) 2013-01-09

Family

ID=44515924

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201110062387 Expired - Fee Related CN102172572B (en) 2011-03-16 2011-03-16 Inner wall washing and coating corrosion resisting method for manifold pipelines in oil fields

Country Status (1)

Country Link
CN (1) CN102172572B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104562228B (en) * 2013-10-28 2017-09-15 中国石油化工股份有限公司 The method for preventing spinning solution delivery pipe skinning
CN105642620A (en) * 2014-11-13 2016-06-08 广东核电合营有限公司 Method and device for cleaning and coating of interior of nuclear power station pipeline through aerodynamic force
CN106475913A (en) * 2016-04-13 2017-03-08 吉林省天德立管道工程科技有限公司 The rust cleaning of swirling eddy method inner-walls of duct snaking, coating antiseptic technology
CN108758162A (en) * 2018-05-07 2018-11-06 安徽申能建设工程有限公司 A kind of pipeline construction robot and its pipeline construction method
CN109373101A (en) * 2018-11-12 2019-02-22 北京扬帆凯程科技有限公司 A kind of detection of new old pipeline, reparation, anti-corrosion method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6841125B1 (en) * 2000-09-20 2005-01-11 Whi Usa, Inc. Method and apparatus to clean and apply foamed corrosion inhibitor to ferrous surfaces
CN1654135A (en) * 2005-02-28 2005-08-17 王筱均 Method of rust cleaning, scale removing, film coating and corrosion preventing for large and middle sized pipeline inside wall
CN101386981A (en) * 2007-09-12 2009-03-18 浙江工贸职业技术学院 Casting corrosion resistant processing solution and used casting anticorrosion treatment technology thereof
CN101518773A (en) * 2009-03-24 2009-09-02 李常胜 Method and device for clearing rust-dirt and performing anticorrosion coating on metal pipelines

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07214022A (en) * 1994-02-01 1995-08-15 Osaka Gas Co Ltd Cleaning method of resin lining water supply pipe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6841125B1 (en) * 2000-09-20 2005-01-11 Whi Usa, Inc. Method and apparatus to clean and apply foamed corrosion inhibitor to ferrous surfaces
CN1654135A (en) * 2005-02-28 2005-08-17 王筱均 Method of rust cleaning, scale removing, film coating and corrosion preventing for large and middle sized pipeline inside wall
CN101386981A (en) * 2007-09-12 2009-03-18 浙江工贸职业技术学院 Casting corrosion resistant processing solution and used casting anticorrosion treatment technology thereof
CN101518773A (en) * 2009-03-24 2009-09-02 李常胜 Method and device for clearing rust-dirt and performing anticorrosion coating on metal pipelines

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JP特开平7-214022A 1995.08.15

Also Published As

Publication number Publication date
CN102172572A (en) 2011-09-07

Similar Documents

Publication Publication Date Title
CN1327979C (en) Method of rust cleaning, scale removing, film coating and corrosion preventing for large and middle sized pipeline inside wall
CN102172572B (en) Inner wall washing and coating corrosion resisting method for manifold pipelines in oil fields
CN101518773B (en) Method and device for clearing rust-dirt and performing anticorrosion coating on metal pipelines
CN103542197B (en) The Coating Production Line of a kind of steel pipe corrosion-proof erosion and coated technique
CN105642620A (en) Method and device for cleaning and coating of interior of nuclear power station pipeline through aerodynamic force
CN203862633U (en) High-pressure air pulse pipeline washing and coating device
CN104722542A (en) Method and device for circularly flushing carbon steel pipes of refined cooling system
CN204353153U (en) Pipe interior uses the device of air force cleaning and coating
CN203171447U (en) Environment-friendly dust-free sand blasting machine
CN212044244U (en) Compressed gas variable pressure type pipeline cleaning and repairing mechanism
CN101788094B (en) Inner wall anti-corrosive construction process of buried pipeline
CN109174488B (en) Underwater spraying device
CN203972417U (en) The cleaning of nuclear power station pipeline inner wall corrosion product and coating coating unit
CN104259067B (en) Technique it is coated with in the old oil pipe scale inhibition anticorrosion of sintering process
CN205868990U (en) Oil field is with multi -functional portable pulse belt cleaning device
CN105483560B (en) Coal mine hydraulic supporting column bore area stainless steel protective coating and coating processes
CN210701542U (en) Timely tracking variable-diameter anti-blocking self-rotating type cavity jet descaling device
CN104668245A (en) Acid pickling blowing method of hydraulic pipeline
CN206202631U (en) Hull cleans monitoring underwater robot sensor installing pipe with water
CN104190676B (en) The cleaning of nuclear power station pipeline inner wall corrosion product and coating coating unit
KR100834035B1 (en) Regeneration method for duct using dry ice and regeneration apparatus thereof
CN101797555A (en) Technology for spraying seawater ballast tank
CN106475913A (en) The rust cleaning of swirling eddy method inner-walls of duct snaking, coating antiseptic technology
CN206202630U (en) Hull cleans monitoring underwater robot right angle axle bed with water
CN206202619U (en) Hull cleans monitoring underwater robot washing and brushing device with water

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130109

Termination date: 20160316