CN106285503B - Acid gas well flow string inner wall medium corrosion-resistant automatic painting apparatus and method - Google Patents
Acid gas well flow string inner wall medium corrosion-resistant automatic painting apparatus and method Download PDFInfo
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- CN106285503B CN106285503B CN201610853246.2A CN201610853246A CN106285503B CN 106285503 B CN106285503 B CN 106285503B CN 201610853246 A CN201610853246 A CN 201610853246A CN 106285503 B CN106285503 B CN 106285503B
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- 230000007797 corrosion Effects 0.000 title claims abstract description 124
- 238000005260 corrosion Methods 0.000 title claims abstract description 124
- 239000002253 acid Substances 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000010422 painting Methods 0.000 title claims abstract description 20
- 210000002445 nipple Anatomy 0.000 claims abstract description 59
- 238000002347 injection Methods 0.000 claims abstract description 54
- 239000007924 injection Substances 0.000 claims abstract description 54
- 241000191291 Abies alba Species 0.000 claims abstract description 30
- 238000011084 recovery Methods 0.000 claims abstract description 24
- 238000012545 processing Methods 0.000 claims abstract description 23
- 230000006872 improvement Effects 0.000 claims abstract description 9
- 238000003860 storage Methods 0.000 claims abstract description 9
- 230000000694 effects Effects 0.000 claims abstract description 8
- 230000000903 blocking effect Effects 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims description 19
- 238000004064 recycling Methods 0.000 claims description 12
- 238000000605 extraction Methods 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 5
- 230000003628 erosive effect Effects 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 2
- 238000005507 spraying Methods 0.000 abstract description 6
- 239000007789 gas Substances 0.000 description 33
- 239000012530 fluid Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 208000002599 Smear Layer Diseases 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910001868 water Inorganic materials 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Pipeline Systems (AREA)
Abstract
The invention discloses a kind of acid gas well flow string inner wall medium corrosion-resistant automatic painting apparatus and methods, including medium corrosion-resistant injected system, smear ball injected system, smearing control and recovery and processing system, improvement christmas tree；The improvement christmas tree is the small four-way flange of two connected from top to bottom and a big four flange；The medium corrosion-resistant injected system includes medium corrosion-resistant storage tank, injection pump, annular space high-voltage power supply, flowmeter, pressure gauge, ground injection pipeline, underground medium corrosion-resistant injection pipe nipple；The smearing ball injected system includes intelligent sphere, pitching cylinder, underground are blocked pipe nipple；The pitching cylinder, which is connected to, to be improved in the middle part of christmas tree on small four-way flange, and underground pipe nipple of blocking is serially connected in flow string lower part；Control and the recovery and processing system smeared includes air-flow velocity and intelligent sphere motion control device, computer control unit, separating and reclaiming device.The method can significantly improve corrosion inhibiter spraying operation effect, suitable for being used for a long time.
Description
Technical field
The present invention relates to gas well plant maintenance technical fields, and in particular to a kind of acid gas well flow string inner wall is anticorrosive
Medium automatic painting apparatus and its application method.
Background technology
Hydrogen sulfide, elementary sulfur, carbon dioxide, water, molten would generally be contained during acid gas field is exploited, in natural gas
Solving oxygen etc. has corrosivity or accelerates the substance of corrosive pipeline, and being contacted with flow string inner wall causes flow string that can corrode
Effect.Particularly hydrogen sulfide acts on corrosion of metal the strongest, not only there is electrochemical corrosion, also Hydrogen Brittleness Phenomena.With
The growth of mining time, flow string inner wall corrosion situation are further deepened, cause flow string corrosion it is thinning, penetrate, even
There is obscission, seriously affect production efficiency, cause huge economic loss.
The corrosiveness of the substances such as hydrogen sulfide can be effectively reduced to flow string inner wall injection medium corrosion-resistant, it is traditional
Mode is usually that corrosion inhibiter is made to be uniformly distributed on each position by protection equipment, for this purpose, usually in advance will with diluent
Corrosion inhibiter dissolving is mixed well, and then it is made to be evenly distributed to pipeline and other as pumped under corrosion inhibiter injection well using press device
Downhole tool surface for not adding the oil jacket annular space of packer, by the way of continuous or intermittent pump, pumps annular space
It notes, oil pipe is brought into, and be evenly distributed on tube inner wall upwards by the hydrocarbon fluids of extraction behind corrosion inhibiter arrival annular space bottom.
But in practice of construction, since flow string is located underground as deep as hundreds if not thousands of rice, traditional anticorrosive Jie
There are cost is higher, smearing is uneven, has and does not spray the problems such as smearing region largely, and is only applicable to newly lower life mostly for matter injection mode
It produces tubing string and finds the flow string corrosion control after corrosion.Uneven, medium corrosion-resistant is smeared in order to solve medium corrosion-resistant
Dosage is big, smears the problems such as inefficiency, it is necessary to which the painting of flow string inner wall medium corrosion-resistant can be effectively improved by designing one kind
Smear efficiency, and the automatic paint-on technique suitable for being used for a long time.It is calculated, is found in anti-corruption by investigation and a large amount of numerical simulation
Appropriately sized sphere is injected in the fluid of erosion medium and extraction gas, medium corrosion-resistant can be significantly improved in flow string
The adhesiving effect of wall surface.More than technical background is based on, it is automatic to have invented a kind of acid gas well flow string inner wall medium corrosion-resistant
Paint-on technique and device improve medium corrosion-resistant spray efficiency, reduce not spraying and smear region and make smearing more equal by injecting ball
It is even, and the kinetic energy of extraction gas is made full use of to realize the even application of full well section.
Invention content
In view of the above problems, the present invention provides a kind of acid gas well flow string inner wall medium corrosion-resistants to smear dress automatically
It puts and method, spraying of the medium corrosion-resistant in flow string internal face can be realized and controlled on the ground, it is easy to operate simple,
It can effectively solve the problems, such as background technology.
To achieve the above object, the technical proposal of the invention is realized in this way：
A kind of acid gas well flow string inner wall medium corrosion-resistant automatic painting apparatus injects system including medium corrosion-resistant
System smears ball injected system, smearing control and recovery and processing system, improves christmas tree；The improvement christmas tree is from top to bottom
The two small four-way flange and a big four flange of connection；
The medium corrosion-resistant injected system include medium corrosion-resistant storage tank, injection pump, annular space high-voltage power supply, flowmeter,
Pressure gauge, ground injection pipeline, underground medium corrosion-resistant injection pipe nipple；The media storage tank passes through injection pump and annular space high pressure
Source is parallel to ground injection pipeline, then by flowmeter Innovation of Connection christmas tree the lowermost big four flange, flowmeter and adopts
Pressure gauge is equipped between gas tree, medium corrosion-resistant injection pipe nipple in underground is mounted on flow string bottom；
The smearing ball injected system includes intelligent sphere, pitching cylinder, underground are blocked pipe nipple；The pitching cylinder is connected to improvement
On small four-way flange among christmas tree, pipe nipple is blocked mounted on flow string bottom in underground, above injection pipe nipple；
Control and the recovery and processing system smeared includes air-flow velocity and intelligent sphere motion control device, computer control list
Member, separating and reclaiming device；Air-flow velocity and intelligent sphere motion control device are mounted on separating and reclaiming device with improving in christmas tree
Between small four-way flanged joint pipeline in, computer control unit connect and control air-flow velocity and intelligent sphere motion control dress
It puts；
The medium corrosion-resistant injected system is injected downwardly into medium corrosion-resistant by the annular space between flow string and casing,
Medium corrosion-resistant is injected pipe nipple by underground medium corrosion-resistant and is entered in flow string.
Further, the improvement christmas tree compares conventional christmas tree, among former big four flange and small four-way flange
One small four-way flange is concatenated, intermediate small four-way flange left and right ends are respectively equipped with valve group B and valve group C, the company of being respectively intended to
Pitching cylinder and separating and reclaiming device are connect, the channel as pitching and recovery processing；Big four left end is equipped with valve group E, for connecting
Medium corrosion-resistant injected system injects medium corrosion-resistant for the annular space between flow string and casing.
Further, the underground medium corrosion-resistant injection pipe nipple is serially connected in the production pipe shell of column above downhole packer,
The extension diameter section thickeied outward is equipped in the middle part of the medium corrosion-resistant injection pipe nipple of underground, extension diameter section is provided with ecto-entad circulation
Check valve only allows annular space of the medium corrosion-resistant between flow string and casing to flow into flow string, does not allow reverse flow
Dynamic, check valve quantity is at least one.
Further, the pitching cylinder for smearing ball injected system is provided with sealing cover, is shut after intelligent sphere input close
Capping, can effectively seal, and ensure that intelligent sphere smoothly falls in christmas tree is improved.
Further, the underground for smearing ball injected system pipe nipple of blocking is serially connected in underground medium corrosion-resistant injection pipe nipple
Pipe nipple middle part is blocked equipped with the undergauge section thickeied inwardly in the production pipe shell of column of top, underground, and intelligent bulb diameter is more than undergauge section
Internal diameter.
Further, the air-flow velocity and intelligent sphere motion control device and computer control unit are using wirelessly or non-wirelessly
Communication mode.
Further, described smear sets in control and the air-flow velocity of recovery and processing system and intelligent sphere motion control device
Flow control valve is equipped with, the flow velocity of fluid can be controlled, so as to reach the direction of motion and speed of control intelligent sphere, the device is also
Signal receiver and signal projector are built-in with, can be adopted with computer control unit real-time Transmission, mounting means and position
With method generally in the art.
Further, separating and reclaiming device side upper end is equipped with separating and reclaiming device and exports 1#, and what is flowed out is main
To produce gas, it is directly connected on gas production main line, separating and reclaiming device side lower end is exported equipped with separating and reclaiming device
2# is mainly used for the recycling of medium corrosion-resistant, and the separating and reclaiming device bottom end is equipped with separating and reclaiming device and exports 3#, for intelligence
The recycling of energy ball.
Further, the intelligent sphere is internally provided with sender unit, air-flow velocity and intelligent sphere motion control
Device can send out the power of signal to carry out the monitoring of the parameters such as position, speed and transmission by intelligent sphere.
The present invention also provides a kind of method using acid gas well flow string inner wall medium corrosion-resistant automatic painting apparatus,
Concrete operations are as follows：
1) installation of acid gas well flow string inner wall medium corrosion-resistant automatic painting apparatus is carried out first, to improving gas production
Tree is assembled, and connection medium corrosion-resistant injected system, smearing ball injected system, smearing control and recovery processing system respectively
System, pipe nipple of blocking to flow string installation underground medium corrosion-resistant injection pipe nipple and underground, after the completion should be according to medium corrosion-resistant
Injected system, smearing ball injected system, smearing control and the connection of three parts of recovery and processing system are installed and are adjusted
Examination；
2) in use, carrying out the injection of medium corrosion-resistant by medium corrosion-resistant injected system first；When underground is anticorrosive
After the check valve of medium injection pipe nipple is opened, intelligent sphere is launched by smearing ball injected system, underground pipe nipple of blocking can prevent
Intelligent sphere falls into shaft bottom；When intelligent sphere one enters in flow string, smearing controls and the air-flow velocity and intelligence of recovery and processing system
Energy ball motion control device begins to work, controls the moving situation of intelligent sphere by adjusting air-flow velocity, makes it according to institute
Speed is needed to move up or move up and down repeatedly, to improve the scribble effect of medium corrosion-resistant；Separating and reclaiming device is in operation
Cheng Zhonghui plays the role of separation extraction gas and medium corrosion-resistant, and the recycling of intelligent sphere is carried out after the completion of operation；
3) after the completion of smearing operation, it is only necessary to normal gas production operation can be restored by closing and open corresponding valve, under
Primary medium corrosion-resistant injection operation will not need to reinstall equipment, i.e., the device and method can realize acid gas well
Fixed tubular column, periodically or non-periodically multiple operation, reduce flow string corrosion and damage probability, safety, it is quick, extend at low cost
Tubing string service life.
Compared with prior art, the beneficial effects of the invention are as follows：
1st, the present invention is by setting medium corrosion-resistant injected system, smearing ball injected system, smearing control and recovery processing
System realizes the delivery of intelligent sphere and recycling and the injection of medium corrosion-resistant and separation and recovery；
2nd, intelligent sphere can be directly changed the flow regime of fluid-mixing, and medium corrosion-resistant is made more to be contacted with tube wall, from
And the corrosion inhibiter spraying effect of flow string inner wall is improved, flow velocity and ball control device can control the intelligent sphere direction of motion and speed
Degree, can be such that intelligent sphere is moved back and forth in flow string when needed, improve the anti-of flow string inner wall to greatest extent
Corrosive medium spraying effect；
3rd, separator can not only play the role of recycling ball, can also isolate anticorrosive Jie in fluid-mixing
Matter, guarantee do not impact subsequent process flow；
4th, package unit and technology maximally utilize existing equipment and are transformed, and the influence to normal operation is smaller, real
The periodically or non-periodically multiple spraying operation to acid gas well fixed tubular column is showed, can have been pacified with effective protection flow string, reduction
Full hidden danger is increased economic efficiency, suitable for being used for a long time after once mounting.
Description of the drawings
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the structure diagram that underground medium corrosion-resistant injects pipe nipple；
Fig. 3 is the B-B cross-sectional views of Fig. 2；
Fig. 4 is partial enlarged view at the I of Fig. 3；
Fig. 5 is that underground is blocked the structure diagram of pipe nipple；
Fig. 6 is the A-A cross-sectional views of Fig. 5；
Fig. 7 is device valve number schematic diagram；
Fig. 8 is the velocity vector schematic diagram that fluid is moved with ball in flow string.
In Fig. 1：1- improves christmas tree；2- medium corrosion-resistant storage tanks；3- injection pumps；4- annular space high-voltage power supplies；5- flowmeters；
6- pressure gauges；Pipeline is injected on 7- ground；8- undergrounds medium corrosion-resistant injection pipe nipple；9- intelligent spheres；10- pitching cylinders；11- undergrounds are kept off
Ball pipe nipple；12- air-flow velocities and intelligent sphere motion control device；13- computer control units；14- separating and reclaiming devices；141- points
1# is exported from retracting device；142- separating and reclaiming devices export 2#；143- separating and reclaiming devices export 3#；15- flow strings；
16- casings；17- downhole packers；40- shaft bottoms；41- reservoirs；42- ground；Flow string, casing, downhole packer, injection are short
Pipe nipple is blocked in below ground in section, underground, other devices are more than ground；It improves christmas tree and is followed successively by two from top to bottom
Small four-way flange and a big four flange；Dotted line between flow velocity and ball control device and host computer represents that the two passes through nothing
Line or wired mode communication connection；The predominantly extraction gas flowed out in separating and reclaiming device outlet 1#, is directly connected to and adopts
On gas main line, separating and reclaiming device outlet 2# is mainly used for the recycling of medium corrosion-resistant, and separating and reclaiming device outlet 3# is intelligence
The channel of ball recycling.
In Fig. 2,3,4：18- injects pipe nipple male thread；19- injects pipe nipple box thread；20- outer walls thick section；21- is unidirectional
Valve；22- spools；23- springs；Check valve valve body is integrated in outer wall thick section, this section of center wall thickness should meet check valve length will
It asks, and thick section is streamlined, erosion of the fluid to injection pipe nipple outer wall can be reduced；Inject pipe nipple overall dimensions and flow string
Pairing, can directly be serially connected on flow string.
In Fig. 5,6：24- blocks underground pipe nipple male thread；25- blocks underground pipe nipple box thread；26- oncus sections；It is interior
The internal diameter of wall thick section should be less than the diameter of intelligent sphere, and the section is using streamlined, plays and reduces fluid and block to underground pipe nipple
The effect of inner wall erosion；Underground pipe nipple overall dimensions of blocking are identical with this section of flow string size, can directly be serially connected in production pipe
On column.
In Fig. 7：27- valves A；28- valve groups B；29- valve groups C；30- valves D；31- valve groups E；32- valves F；33- valves G；
34- valves H；35- valves I；36- valves J；Wherein the valve of number A~E and valve group, which are arranged in, improves on christmas tree, valve F
It is arranged in G on two branch lines of ground injection pipeline, valve H~J is arranged on separating and reclaiming device.
In Fig. 8：37- intelligent sphere outside wall surfaces；38- flow string internal faces；39- mixed gas air-flow streamlines.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment shall fall within the protection scope of the present invention.
As shown in Fig. 1~Fig. 7, a kind of acid gas well flow string inner wall medium corrosion-resistant automatic painting apparatus, including anti-
Corrosive medium injected system, smear ball injected system and smear control and three parts of recovery and processing system, it is described these three
Part, which is both connected to, improves on christmas tree 1, and the medium corrosion-resistant injected system includes medium corrosion-resistant storage tank 2, injection pump
3rd, annular space high-voltage power supply 4, flowmeter 5, pressure gauge 6, ground injection pipeline 7, underground medium corrosion-resistant injection pipe nipple 8, the smearing
Ball injected system includes intelligent sphere 9, pitching cylinder 10, underground are blocked pipe nipple 11, it is described to smear control and recovery and processing system includes
Air-flow velocity and intelligent sphere motion control device 12, computer control unit 13, separating and reclaiming device 14, the medium corrosion-resistant note
Enter system and medium corrosion-resistant is injected downwardly by the annular space between flow string 15 and casing 16, medium corrosion-resistant is resisted by underground
Corrosive medium injection pipe nipple 8 enters in flow string 15, and pipe nipple 11 is blocked successively in underground medium corrosion-resistant injection pipe nipple 8 and underground
15 sections of flow string being serially connected on downhole packer 17.The improvement christmas tree 1 compares conventional christmas tree, in former big four
One small four-way flange is concatenated among flange and small four-way flange, left and right ends valve group B28 and valve group C29 are respectively intended to make
For the channel of pitching and recovery processing, big four flange left end valve group E31 connection medium corrosion-resistant injected systems, for production
Annular space injection medium corrosion-resistant between tubing string 15 and casing 16, the function of christmas tree other parts remain unchanged.The anti-corruption
Medium corrosion-resistant storage tank 2, injection pump 3, annular space high-voltage power supply 4, flowmeter 5, pressure gauge 6 in erosion medium injected system pass through
Ground injection pipeline 7, which is connected to, to be improved on 1 big four flange left end valve group E31 of christmas tree, and the injection pipe nipple 8 is serially connected in underground
15 sections of the flow string of the top of packer 17, substantially increase wall thickness at annular space and be provided with check valve 21 flow string it is short
Section, set 21, check valve allow annular space of the medium corrosion-resistant between flow string 15 and casing 16 to flow into flow string 15
It is interior, do not allow reverse flow, set check valve 21 can be one or more.The pitching cylinder for smearing ball injected system
10 are provided with sealing cover, and intelligent sphere 9 can be sealed effectively after putting into, under ensureing intelligent sphere 9 in christmas tree 1 is improved smoothly
It falls, the underground for smearing ball injected system pipe nipple 11 of blocking is serially connected in the production of 8 top of underground medium corrosion-resistant injection pipe nipple
15 sections of tubing string, substantially increase inner flow passage wall thickness with stop ball continue fall flow string pipe nipple, do not influence gas and
Medium corrosion-resistant passes through.The air-flow velocity and intelligent sphere motion control device 12 for smearing control and recovery and processing system,
Separating and reclaiming device 14 is sequentially connected in series in the valve group C29 right ends for improving christmas tree 1, the air-flow velocity and intelligent sphere motion control
Device 12 and computer control unit 13 are using wirelessly or non-wirelessly communication mode.The air-flow for smearing control and recovery and processing system
Flow control valve is provided in flow velocity and intelligent sphere motion control device 12, the flow velocity of fluid can be controlled, so as to reach control
The direction of motion and speed of intelligent sphere 9, the device are also built-in with signal receiver and signal projector, can be controlled with computer
13 real-time Transmission of unit, signal receiver and signal projector installation and connection method and normal signal transceiver connection method one
It causes, wireline interface and wireless receiving and dispatching port is set.The intelligent sphere 9 is internally provided with sender unit, air-flow velocity and
Intelligent sphere motion control device 12 can carry out the ginsengs such as position, speed by radio signal power that intelligent sphere 9 is sent out
Several monitorings and transmission.
The application method of the present invention is as follows：
(1) device is installed and is debugged firstly the need of before gas well tripping in flow string：Under ground portion is mainly
Pipe nipple 11 is blocked into underground and medium corrosion-resistant injection pipe nipple 8 in underground is serially connected in 17 top of downhole packer of flow string 15
Section.Above ground portion mainly modifies to traditional christmas tree, and one has been concatenated among former big four flange and small four-way flange
A small four-way flange, left and right ends setting valve group B28 and valve group C29 are respectively intended to the channel as pitching and recovery processing,
The function of christmas tree other parts is held essentially constant, and does not interfere with normal gas production operation.Medium corrosion-resistant injected system applies
Smear ball injected system and smear control and three parts of recovery and processing system according to method provided by the invention carry out installation and
Debugging, to ensure the normal use of each component function.
(2) after the completion of installation and debugging, need to carry out is the operation of medium corrosion-resistant injection：As shown in Figure 1 and Figure 7, it closes
Valve closing door A27 opens valve group C29 and valve J36, and confirms that valve D30 is kept open, and confirms valve H34 and valve I35
It is closed, to ensure the normal development of gas production operation.Valve group E31 and valve F32 is opened, opens injection pump 3, it will be anti-
The medium corrosion-resistant of a certain amount of volume is pumped into the annular space between flow string 15 and casing 16 in corrosive medium storage tank 2, passes through
Flowmeter 5 can accurately control the volume of injection medium corrosion-resistant, reach should close after the injected slurry volume of requirement injection pump 3 with
And valve F22.Valve G33 is opened, the gas in annular space high-voltage power supply 4 is injected into the annular space between flow string 15 and casing 16,
Pressure gauge 6 can show the pressure size in annular space.Annular pressure and production around underground medium corrosion-resistant injection pipe nipple 8
After the internal pressure of tubing string 15 reaches certain pressure difference, check valve 21 will be pressed off, makes to be previously injected the medium corrosion-resistant in annular space and passes through list
Enter in flow string 15 to valve 21, should suitably adjust valve F33 apertures according to the pressure size shown by pressure gauge 6 at this time,
Valve G33 can be closed by being smeared when operation is completed when last time.
(3) it and then carries out smearing the relevant operation that ball injects：Confirm that valve group B28 is closed, open pitching cylinder 10
Sealing cover, intelligent sphere 9 is put into pitching cylinder 10 as shown in Figure 4 and has closed sealing cover.Valve D and valve group B is opened, and is passed through
Air-flow velocity and intelligent sphere motion control device 12 adjust air-flow velocity, ensure intelligent sphere 9 can smoothly under fall on underground and block
At pipe nipple 11.Valve group B28 is closed after confirming that intelligent sphere 9 is come into flow string.
(4) it then carries out medium corrosion-resistant and smears operation：It is provided in air-flow velocity and intelligent sphere motion control device 12
Flow control valve can control the flow velocity of air-flow, so as to reach the direction of motion and speed of control intelligent sphere 9, when intelligent sphere 9 is fallen
Enter underground block pipe nipple 11 when, as shown in figure 8, air-flow velocity and intelligent sphere motion control device 12 will raise air-flow stream automatically
Speed, ensure intelligent sphere 9 with certain relative velocity with upward fluid, when intelligent sphere 9 moves to subaerial position,
Air-flow velocity and intelligent sphere motion control device 12 will lower air-flow velocity automatically, intelligent sphere 9 be made to move downward again, intelligent sphere
9 reciprocating motion number is determined by the smear layer thickness requirement of flow string inner wall medium corrosion-resistant.Air-flow velocity and intelligence
Pacified between ball motion control device 12 and computer control unit 13 using communication mode wirelessly or non-wirelessly, computer control unit 13
It, can be to the related data and letter of air-flow velocity and the offer of intelligent sphere motion control device 12 equipped with correlation computations and control program
It number is analyzed and is calculated, such as flow velocity, flow etc..9 inside of intelligent sphere is equipped with the signal projector of strength of stability, air-flow velocity
And intelligent sphere motion control device 12 can send out the power of signal according to intelligent sphere 9 and combine the calculating of computer control unit 13
Program obtains the specific location of intelligent sphere 9, so as to adjust air-flow velocity in due course, changes the stress and motion state of ball.
(5) what the operation of medium corrosion-resistant smearing carried out after the completion is the recycling of intelligent sphere and the recycling of medium corrosion-resistant：
Medium corrosion-resistant carries out in separating and reclaiming device 14 always in fact with producing the separation of gas, produces gas and medium corrosion-resistant
Fluid-mixing enter separating and reclaiming device 14 through valve group C29 and air-flow velocity and intelligent sphere motion control device 12, utilize
Separation is realized in the gravitational differentiation of different fluid, and extraction gas enters gas production main line through separating and reclaiming device outlet 1#141, resists
Corrosive medium then gradually gathers 14 lower part of separating and reclaiming device.After being returned in 9 last time of intelligent sphere, air-flow velocity and intelligence
Ball motion control device 12 will no longer lower flow velocity, to ensure that intelligent sphere 9 passes through valve group C29 and air-flow velocity and intelligent sphere
Motion control device 12 falls into 14 bottom of separating and reclaiming device.Intelligent sphere 9 should open valve after falling into separating and reclaiming device 14
A27 closes valve group C29 and valve J36.After being vented 14 upper gas pressure of separating and reclaiming device, valve I35 is opened, by dividing
The medium corrosion-resistant of lower part is discharged from retracting device outlet 2#142 to be recycled and be handled.It is closed after medium corrosion-resistant emptying
Valve closing door I35 opens valve H34, exports 3#143 taking-up intelligent spheres 9 by separating and reclaiming device and carries out maintaining, receives ball
Valve H34 should be closed after the completion.
Those skilled in the art of the present technique are appreciated that unless otherwise defined all terms used herein are (including technology art
Language and scientific terminology) there is the meaning identical with the general understanding of the those of ordinary skill in fields of the present invention.Should also
Understand, those terms such as defined in the general dictionary, which should be understood that, to be had and the meaning in the context of the prior art
The consistent meaning of justice, and unless defined as here, will not be with idealizing or the meaning of too formal be explained.
One of ordinary skill in the art will appreciate that：The component in device in embodiment can describe to divide according to embodiment
It is distributed in the device of embodiment, respective change can also be carried out and be located in one or more devices different from the present embodiment.On
The component for stating embodiment can be merged into a component, can also be further split into multiple subassemblies.
It should be noted last that：The foregoing is merely illustrative of the preferred embodiments of the present invention, not limiting this hair
It is bright, although the present invention has been described in detail with reference to the above embodiments, it will be apparent to an ordinarily skilled person in the art that：Still
It can modify or equivalently replace the present invention, any modification or part without departing from the spirit and scope of the present invention are replaced
It changes, is intended to be within the scope of the claims of the invention.
Claims (10)
1. a kind of acid gas well flow string inner wall medium corrosion-resistant automatic painting apparatus, which is characterized in that including improving gas production
Tree, medium corrosion-resistant injected system smear ball injected system, smear control and recovery and processing system；It is described improvement christmas tree be
The two small four-way flange connected from top to bottom and a big four flange；
The medium corrosion-resistant injected system includes medium corrosion-resistant storage tank, injection pump, annular space high-voltage power supply, flowmeter, pressure
Table, ground injection pipeline, underground medium corrosion-resistant injection pipe nipple；The media storage tank by injection pump and annular space high-voltage power supply simultaneously
Ground injection pipeline is linked to, then passes through flowmeter Innovation of Connection christmas tree the lowermost big four flange, flowmeter and christmas tree
Between be equipped with pressure gauge, underground medium corrosion-resistant injection pipe nipple be mounted on flow string bottom；
The smearing ball injected system includes intelligent sphere, pitching cylinder, underground are blocked pipe nipple；The pitching cylinder is connected to improvement gas production
It sets on intermediate small four-way flange, pipe nipple is blocked mounted on flow string lower part in underground, is injected positioned at underground medium corrosion-resistant short
On section；
It is described smear control and recovery and processing system include air-flow velocity and intelligent sphere motion control device, computer control unit,
Separating and reclaiming device；Air-flow velocity and intelligent sphere motion control device are mounted on separating and reclaiming device with improving among christmas tree
In the pipeline of small four-way flanged joint, computer control unit connects and controls air-flow velocity and intelligent sphere motion control device；
The medium corrosion-resistant injected system is injected downwardly into medium corrosion-resistant, anti-corruption by the annular space between flow string and casing
Erosion medium injects pipe nipple by underground medium corrosion-resistant and enters in flow string.
2. a kind of acid gas well flow string inner wall medium corrosion-resistant automatic painting apparatus according to claim 1, special
Sign is that the improvement christmas tree compares conventional christmas tree, and one has been concatenated among former big four flange and small four-way flange
Small four-way flange, intermediate small four-way flange left and right ends are respectively equipped with valve group B and valve group C, be respectively intended to connection pitching cylinder and
Separating and reclaiming device；Big four left end is equipped with valve group E, for connecting medium corrosion-resistant injected system.
3. a kind of acid gas well flow string inner wall medium corrosion-resistant automatic painting apparatus according to claim 1, special
Sign is that the underground medium corrosion-resistant injection pipe nipple is serially connected in the production pipe shell of column above downhole packer, and underground is anticorrosive
The extension diameter section thickeied outward is equipped in the middle part of medium injection pipe nipple, extension diameter section is provided with the check valve of ecto-entad circulation, it is single
It is at least one to valve quantity.
4. a kind of acid gas well flow string inner wall medium corrosion-resistant automatic painting apparatus according to claim 1, special
Sign is that the pitching cylinder for smearing ball injected system is provided with sealing cover, and intelligent sphere input shuts sealing cover later.
5. a kind of acid gas well flow string inner wall medium corrosion-resistant automatic painting apparatus according to claim 1, special
Sign is, the underground for smearing ball injected system is blocked the production that pipe nipple is serially connected in above the medium corrosion-resistant injection pipe nipple of underground
Pipe nipple middle part is blocked equipped with the undergauge section thickeied inwardly in tubing string section, underground, and intelligent bulb diameter is more than undergauge section internal diameter.
6. a kind of acid gas well flow string inner wall medium corrosion-resistant automatic painting apparatus according to claim 1, special
Sign is that the air-flow velocity and intelligent sphere motion control device and computer control unit are using wirelessly or non-wirelessly communication mode.
7. a kind of acid gas well flow string inner wall medium corrosion-resistant automatic painting apparatus according to claim 1, special
Sign is, flow control is equipped in the air-flow velocity and intelligent sphere motion control device for smearing control and recovery and processing system
Valve, air-flow velocity and intelligent sphere motion control device are equipped with signal receiver and signal projector.
8. a kind of acid gas well flow string inner wall medium corrosion-resistant automatic painting apparatus according to claim 1, special
Sign is that separating and reclaiming device side upper end is equipped with separating and reclaiming device and exports 1#, the predominantly extraction gas flowed out,
It is directly connected on gas production main line, separating and reclaiming device side lower end is equipped with separating and reclaiming device and exports 2#, is mainly used for
The recycling of medium corrosion-resistant, the separating and reclaiming device bottom end is equipped with separating and reclaiming device and exports 3#, for the recycling of intelligent sphere.
9. a kind of acid gas well flow string inner wall medium corrosion-resistant automatic painting apparatus according to claim 1, special
Sign is that the intelligent sphere is internally provided with sender unit.
10. one kind acid gas well flow string inner wall medium corrosion-resistant automatic painting apparatus as described in claim any one of 1-8
Application method, step is as follows：
1) first carry out acid gas well flow string inner wall medium corrosion-resistant automatic painting apparatus installation, to improve christmas tree into
Row assembling, and connection medium corrosion-resistant injected system, smearing ball injected system, smearing control and recovery and processing system respectively, it is right
Flow string installs underground medium corrosion-resistant injection pipe nipple additional and underground is blocked pipe nipple, should be injected after the completion according to medium corrosion-resistant and is
System, smearing ball injected system, smearing control and the connection of three parts of recovery and processing system are installed and are debugged；
2) in use, carrying out the injection of medium corrosion-resistant by medium corrosion-resistant injected system first；When underground medium corrosion-resistant
Inject pipe nipple check valve open after, launch intelligent sphere by smearing ball injected system, underground pipe nipple of blocking can prevent intelligence
Ball falls into shaft bottom；When intelligent sphere one enters in flow string, smearing controls and the air-flow velocity and intelligent sphere of recovery and processing system
Motion control device begins to work, and the moving situation of intelligent sphere is controlled by adjusting air-flow velocity, makes it according to required speed
Degree is moved up or is moved up and down repeatedly, to improve the scribble effect of medium corrosion-resistant；Separating and reclaiming device is in operation process
It can play the role of separation extraction gas and medium corrosion-resistant, and the recycling of intelligent sphere is carried out after the completion of operation；
3) after the completion of smearing operation, it is only necessary to which normal gas production operation can be restored by closing and open corresponding valve, next time
Medium corrosion-resistant injection operation will not need to reinstall equipment, i.e., the device and method can realize that acid gas well is motionless
Tubing string, periodically or non-periodically multiple operation, reduce flow string corrosion and damage probability, safety, it is quick, extend tubing string at low cost
Service life.
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| CN201610853246.2A CN106285503B (en) | 2016-09-27 | 2016-09-27 | Acid gas well flow string inner wall medium corrosion-resistant automatic painting apparatus and method |
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| CN201610853246.2A CN106285503B (en) | 2016-09-27 | 2016-09-27 | Acid gas well flow string inner wall medium corrosion-resistant automatic painting apparatus and method |
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| CN106285503B true CN106285503B (en) | 2018-06-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106837247B (en) * | 2017-03-19 | 2019-02-22 | 西南石油大学 | A kind of oil/gas well oil jacket annulus corrosion inhibiter fountain filling technique and device |
| CN113006743B (en) * | 2021-03-23 | 2022-07-19 | 西南石油大学 | Automatic coating process for gas recovery well corrosion inhibition liquid |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2137989Y (en) * | 1992-07-06 | 1993-07-14 | 胜利石油管理局油建一公司 | Wind driving painter in steel tube |
| CN1043920C (en) * | 1993-08-02 | 1999-06-30 | 辛惠民 | Antiseptic job method for long distance metal pipeline liner plastic film tube |
| CN2285167Y (en) * | 1995-02-23 | 1998-07-01 | 西安庆华电器制造厂 | Intermediate and small aperture pipe inner wall spray coating device |
| CN102493791A (en) * | 2007-12-14 | 2012-06-13 | 中国石油大学(北京) | Abrasive material jet injection device |
| US8261841B2 (en) * | 2009-02-17 | 2012-09-11 | Exxonmobil Research And Engineering Company | Coated oil and gas well production devices |
| CN102974492B (en) * | 2011-09-06 | 2015-09-30 | 上海航天精密机械研究所 | A kind of inwall automatic spray-paint device |
| CN102527623B (en) * | 2011-12-05 | 2014-01-08 | 海洋化工研究院有限公司 | Method for coating inner wall of bent and abnormally-shaped pipeline with small aperture by using painting |
| CN103831210B (en) * | 2012-11-22 | 2017-02-08 | 中国石油天然气股份有限公司 | Extrusion coating device for internal corrosion prevention of pipeline and coating method thereof |
| CN204276285U (en) * | 2014-11-07 | 2015-04-22 | 中国石油化工股份有限公司 | Anticorrosion one-shot forming apparatus in a kind of steel pipe |
| CN206309289U (en) * | 2016-09-27 | 2017-07-07 | 西南石油大学 | Acid gas well flow string inwall medium corrosion-resistant automatic painting apparatus |
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