CN106285503A - Acid gas well flow string inwall medium corrosion-resistant automatic painting apparatus and method - Google Patents
Acid gas well flow string inwall medium corrosion-resistant automatic painting apparatus and method Download PDFInfo
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- CN106285503A CN106285503A CN201610853246.2A CN201610853246A CN106285503A CN 106285503 A CN106285503 A CN 106285503A CN 201610853246 A CN201610853246 A CN 201610853246A CN 106285503 A CN106285503 A CN 106285503A
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- 230000007797 corrosion Effects 0.000 title claims abstract description 120
- 238000005260 corrosion Methods 0.000 title claims abstract description 120
- 239000002253 acid Substances 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000010422 painting Methods 0.000 title claims abstract description 21
- 210000002445 nipple Anatomy 0.000 claims abstract description 60
- 241000191291 Abies alba Species 0.000 claims abstract description 30
- 238000011084 recovery Methods 0.000 claims abstract description 30
- 238000002347 injection Methods 0.000 claims abstract description 20
- 239000007924 injection Substances 0.000 claims abstract description 20
- 238000012545 processing Methods 0.000 claims abstract description 18
- 230000000694 effects Effects 0.000 claims abstract description 12
- 230000000903 blocking effect Effects 0.000 claims abstract description 10
- 230000006872 improvement Effects 0.000 claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 claims description 16
- 238000000605 extraction Methods 0.000 claims description 11
- 238000004891 communication Methods 0.000 claims description 5
- 230000003628 erosive effect Effects 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 abstract description 6
- 239000007789 gas Substances 0.000 description 32
- 239000012530 fluid Substances 0.000 description 9
- 238000004064 recycling 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
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 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
- 239000007921 spray 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
- 238000012790 confirmation Methods 0.000 description 1
- 238000010276 construction 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
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 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
- 230000009467 reduction Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000002002 slurry 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 inwall medium corrosion-resistant automatic painting apparatus and method, including medium corrosion-resistant injected system, smear ball injected system, smear control and recovery and processing system, improvement christmas tree；Described improvement christmas tree is the little four-way flange of two connected from top to bottom and a big four flange；Described medium corrosion-resistant injected system includes medium corrosion-resistant storage tank, injection pump, annular space high-voltage power supply, effusion meter, Pressure gauge, pipeline is injected on ground, down-hole medium corrosion-resistant injects pipe nipple；Described ball injected system of smearing includes that intelligent sphere, pitching cylinder, down-hole are blocked pipe nipple；Described pitching cylinder is connected to improve in the middle part of christmas tree on little four-way flange, and down-hole pipe nipple of blocking is serially connected in flow string bottom；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.The method can significantly improve corrosion inhibiter spraying operation effect, suitable life-time service.
Description
Technical field
The present invention relates to gas well plant maintenance technical field, be specifically related to a kind of acid gas well flow string inwall anticorrosive
Medium automatic painting apparatus and using method thereof.
Background technology
During acid gas field is exploited, natural gas would generally contain hydrogen sulfide, elementary sulfur, carbon dioxide, water, molten
Solve oxygen etc. there is corrosivity or accelerate the material of corrosive pipeline, cause flow string to corrode with flow string contact internal walls
Effect.Particularly hydrogen sulfide is the strongest to corrosion of metal effect, the most only electrochemical corrosion, also Hydrogen Brittleness Phenomena.Along with
The growth of recovery time, flow string inner wall corrosion situation deepens further, causes that flow string corrosion is thinning, penetrates, even
Obscission occurs, has a strong impact on production efficiency, cause huge economic loss.
Flow string inwall is injected medium corrosion-resistant and can effectively reduce the corrosiveness of the materials such as hydrogen sulfide, traditional
Mode usually makes corrosion inhibiter be uniformly distributed on each position by protection equipment, to this end, usually in advance will with diluent
Corrosion inhibiter dissolve, mix well, then use press device such as pump corrosion inhibiter is injected down-hole so that it is be evenly distributed to pipeline and other
Downhole tool surface, for not adding the oil jacket annular space of packer, uses continuously or the mode of intermittent pump, annular space is carried out pump
Note, corrosion inhibiter is brought into oil pipe by the hydrocarbon fluids of extraction after arriving bottom annular space, and is upwards evenly distributed on tube inner wall.
But in practice of construction, owing to flow string is located underground as deep as hundreds if not thousands of rice, traditional anticorrosive Jie
Matter injection mode exist relatively costly, smear uneven, have problems such as smearing region of not spraying in a large number, and be mostly only applicable to new lower raw
Flow string corrosion control after producing tubing string and finding corrosion.Uneven, medium corrosion-resistant is smeared in order to solve medium corrosion-resistant
Consumption is big, smear the problems such as inefficiency, it is necessary to designs one and can be effectively improved the painting of flow string inwall medium corrosion-resistant
Smear efficiency, and the automatic paint-on technique of suitable life-time service.Calculated by investigation and substantial amounts of numerical simulation, find in anti-corruption
The fluid of erosion medium and extraction gas injects appropriately sized spheroid, it is possible to significantly improve medium corrosion-resistant in flow string
The adhesiving effect of wall.Based on above technical background, invent a kind of acid gas well flow string inwall medium corrosion-resistant automatic
Paint-on technique and device, by injecting ball to improve medium corrosion-resistant spray efficiency, to reduce not spray and smear region and making and smear more equal
Even, and the kinetic energy making full use of extraction gas realizes the even application of full well section.
Summary of the invention
For problem above, the invention provides a kind of acid gas well flow string inwall medium corrosion-resistant and automatically smear dress
Put and method, it is possible to realize and control the medium corrosion-resistant spraying at flow string internal face on the ground, easy to operate simply,
Can effectively solve problem present in background technology.
For achieving the above object, the technical scheme is that and be achieved in that:
A kind of acid gas well flow string inwall medium corrosion-resistant automatic painting apparatus, injects system including medium corrosion-resistant
Unite, smear ball injected system, smear control and recovery and processing system, improvement christmas tree；Described improvement christmas tree is from top to bottom
Two the little four-way flanges connected and a big four flange；
Described medium corrosion-resistant injected system include medium corrosion-resistant storage tank, injection pump, annular space high-voltage power supply, effusion meter,
Pressure gauge, ground inject pipeline, down-hole medium corrosion-resistant injects pipe nipple；Described media storage tank is by injection pump and annular space high pressure
Source is parallel to ground and injects pipeline, then by the big four flange of effusion meter Innovation of Connection christmas tree bottom, effusion meter and adopting
Being provided with Pressure gauge between gas tree, down-hole medium corrosion-resistant is injected pipe nipple and is arranged on bottom flow string；
Described ball injected system of smearing includes that intelligent sphere, pitching cylinder, down-hole are blocked pipe nipple；Described pitching cylinder is connected to improve
On little four-way flange in the middle of christmas tree, down-hole pipe nipple of blocking is arranged on bottom flow string, is injecting above pipe nipple；
Described smear control and recovery and processing system to include that air-flow velocity and intelligent sphere motion control device, computer control single
Unit, separating and reclaiming device；Air-flow velocity and intelligent sphere motion control device are arranged on separating and reclaiming device and improve in christmas tree
Between little four-way Flange joint pipeline in, computer control unit connect and control air-flow velocity and intelligent sphere motor control dress
Put；
Described medium corrosion-resistant injected system is injected downwardly into medium corrosion-resistant by the annular space between flow string and sleeve pipe,
Medium corrosion-resistant is injected pipe nipple by down-hole medium corrosion-resistant and is entered in flow string.
Further, described improvement christmas tree compares conventional christmas tree, in the middle of former big four flange and little four-way flange
Concatenate a little four-way flange, about middle little four-way flange, be respectively arranged at two ends with valve group B and valve group C, the company of being respectively intended to
Connect pitching cylinder and separating and reclaiming device, as pitching and the passage of recycling；Big four left end is provided with valve group E, is used for connecting
Medium corrosion-resistant injected system, is used for injecting medium corrosion-resistant to the annular space between flow string and sleeve pipe.
Further, described injection pipe nipple is serially connected in the flow string section above downhole packer, injects and sets in the middle part of pipe nipple
There is the extension diameter section thickeied laterally, be provided with the check valve of ecto-entad circulation at extension diameter section, only allow medium corrosion-resistant from life
Producing the annular space between tubing string and sleeve pipe to flow in flow string, not allowing reverse flow, check valve quantity is at least one.
Further, described in smear the pitching cylinder of ball injected system and be provided with sealing lid, intelligent sphere is shut close after putting into
Capping, it is possible to effectively seal, it is ensured that intelligent sphere falls in improving christmas tree smoothly.
Further, smear the down-hole of ball injected system pipe nipple of blocking described in be serially connected in down-hole medium corrosion-resistant and inject pipe nipple
The flow string section of top, down-hole blocks and is provided with the undergauge section thickeied to inner side in the middle part of pipe nipple, and intelligent sphere diameter is more than undergauge section
Internal diameter.
Further, described air-flow velocity and intelligent sphere motion control device and computer control unit use wirelessly or non-wirelessly
Communication mode.
Further, set in smearing control and the air-flow velocity of recovery and processing system and intelligent sphere motion control device described in
It is equipped with flow control valve, it is possible to controlling the flow velocity of fluid, thus reach to control the direction of motion and the speed of intelligent sphere, this device is also
It is built-in with signal receiver and signal projector, it is possible to and computer control unit real-time Transmission, its mounting means and position are adopted
By method generally in the art.
Further, upper end, described separating and reclaiming device side is provided with separating and reclaiming device outlet 1#, and flowed out is main
For extraction gas, being directly connected on gas production main line, lower end, described separating and reclaiming device side is provided with separating and reclaiming device outlet
2#, is mainly used in the recovery of medium corrosion-resistant, and described separating and reclaiming device bottom is provided with separating and reclaiming device outlet 3#, for intelligence
The recovery of energy ball.
Further, described intelligent sphere be internally provided with sender unit, air-flow velocity and intelligent sphere motor control
Device can be by the power of the sent signal of intelligent sphere to carry out position, the isoparametric monitoring of speed and transmission.
The present invention also provides for a kind of method using acid gas well flow string inwall medium corrosion-resistant automatic painting apparatus,
Concrete operations are as follows:
1) installation of acid gas well flow string inwall medium corrosion-resistant automatic painting apparatus is first carried out, to improving gas production
Tree assemble, and respectively connect medium corrosion-resistant injected system, smear ball injected system, smear control and recycling system
System, installs down-hole medium corrosion-resistant additional and injects pipe nipple and block pipe nipple in down-hole flow string, should be according to medium corrosion-resistant after completing
Injected system, smear ball injected system, smear control and the connection of three parts of recovery and processing system is installed and adjusts
Examination；
2), when using, first pass through medium corrosion-resistant injected system and carry out the injection of medium corrosion-resistant；When down-hole is anticorrosive
Medium injects after the check valve of pipe nipple opens, and throws in intelligent sphere by smearing ball injected system, and down-hole pipe nipple of blocking is possible to prevent
Intelligent sphere falls into shaft bottom；When intelligent sphere one enters in flow string, smear control and the air-flow velocity of recovery and processing system and intelligence
Work can be begun to by ball motion control device, be controlled the moving situation of intelligent sphere by regulation air-flow velocity so that it is according to institute
Need speed to move up or repeatedly move up and down, to improve the scribble effect of medium corrosion-resistant；Separating and reclaiming device is in operation
Cheng Zhonghui plays separation extraction gas and the effect of medium corrosion-resistant, and carries out the recovery of intelligent sphere after operation completes；
3) smear after operation completes, it is only necessary to close and open corresponding valve and can recover normal gas production operation, under
Medium corrosion-resistant once injects operation will not reinstall equipment at needs, i.e. this device and method can realize acid gas well
Fixed tubular column, the most subjobs, reduce flow string corrosion and damage probability, safety, quickly, extend at low cost
Tubing string service life.
Compared with prior art, the invention has the beneficial effects as follows:
1, the present invention by arrange medium corrosion-resistant injected system, smear ball injected system, smear control and recycling
System, it is achieved the delivery of intelligent sphere and recovery and the injection of medium corrosion-resistant and separation and recovery；
2, intelligent sphere can directly change the flow regime of fluid-mixing, makes medium corrosion-resistant more contact with tube wall, from
And improving the corrosion inhibiter spraying effect of flow string inwall, flow velocity and ball control device can control the intelligent sphere direction of motion and speed
Degree, can make intelligent sphere move back and forth in flow string needs when, improves the anti-of flow string inwall to greatest extent
Corrosive medium spraying effect；
3, segregation apparatus can not only play the effect reclaiming ball, it is also possible to isolates anticorrosive Jie in fluid-mixing
Matter, it is ensured that subsequent process flow is not impacted；
4, package unit and technology all maximally utilize existing equipment and transform, and the impact on normal operation is less, real
Show the most repeatedly spraying operation to acid gas well fixed tubular column, can effectively protect flow string, reduce peace
Full hidden danger, increase economic efficiency, life-time service after suitable once mounting.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation that pipe nipple is injected in down-hole；
Fig. 3 is the B-B cross-sectional view of Fig. 2；
Fig. 4 is partial enlarged drawing at the I of Fig. 3；
Fig. 5 is to block the structural representation of pipe nipple in down-hole；
Fig. 6 is the A-A cross-sectional view of Fig. 5；
Fig. 7 is device valve numbering schematic diagram；
Fig. 8 is the velocity schematic diagram that fluid moves with ball in flow string.
In Fig. 1: 1-improves christmas tree；2-medium corrosion-resistant storage tank；3-injection pump；4-annular space high-voltage power supply；5-effusion meter；
6-Pressure gauge；Pipeline is injected on 7-ground；8-down-hole medium corrosion-resistant injects pipe nipple；9-intelligent sphere；10-pitching cylinder；11-down-hole keeps off
Ball pipe nipple；12-air-flow velocity and intelligent sphere motion control device；13-computer control unit；14-separating and reclaiming device；141-divides
1# is exported from retracting device；142-separating and reclaiming device outlet 2#；143-separating and reclaiming device outlet 3#；15-flow string；
16-sleeve pipe；17-downhole packer；40-shaft bottom；41-reservoir；42-ground；Flow string, sleeve pipe, downhole packer, injection are short
Joint, down-hole pipe nipple of blocking are all at below ground, and other devices are all more than ground；Improve christmas tree and be followed successively by two from top to bottom
Little four-way flange and a big four flange；The dotted line that flow velocity and ball control between device and host computer represents that both pass 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 adopt
On air dry line, separating and reclaiming device outlet 2# is mainly used in the recovery of medium corrosion-resistant, and separating and reclaiming device outlet 3# is intelligence
The passage that ball reclaims.
In Fig. 2,3,4: 18-injects pipe nipple male thread；19-injects pipe nipple box thread；20-outer wall thick section；21-is unidirectional
Valve；22-spool；23-spring；Check valve valve body is integrated in outer wall thick section, and this section of center wall thickness should meet check valve length to be wanted
Ask, and thick section is streamlined, the fluid erosion to injecting pipe nipple outer wall can be reduced；Inject pipe nipple overall dimensions and flow string
Pairing, can directly be serially connected on flow string.
Fig. 5, in 6: 24-blocks down-hole pipe nipple male thread；25-blocks down-hole pipe nipple box thread；26-oncus section；In
The internal diameter of wall thick section should be less than the diameter of intelligent sphere, and this section uses streamlined, plays minimizing fluid and blocks down-hole pipe nipple
The effect of inwall erosion；Down-hole pipe nipple overall dimensions of blocking is equivalently-sized with this section of flow string, can directly be serially connected in production pipe
On post.
In Fig. 7: 27-valve A；28-valve group B；29-valve group C；30-valve D；31-valve group E；32-valve F；33-valve G；
34-valve H；35-valve I；36-valve J；Wherein numbering A～the valve of E and valve group are arranged on improvement christmas tree, valve F
Being arranged in ground with G to inject on two branch lines of pipeline, valve H～J is arranged on separating and reclaiming device.
In Fig. 8: 37-intelligent sphere outside wall surface；38-flow string internal face；39-mixed gas air-flow streamline.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
As shown in Fig. 1～Fig. 7, a kind of acid gas well flow string inwall medium corrosion-resistant automatic painting apparatus, including resisting
Corrosive medium injected system, smear ball injected system and smear control and three parts of recovery and processing system, described these three
Part is both connected to improve on christmas tree 1, and described medium corrosion-resistant injected system includes medium corrosion-resistant storage tank 2, injection pump
3, annular space high-voltage power supply 4, effusion meter 5, Pressure gauge 6, ground inject pipeline 7, down-hole medium corrosion-resistant inject pipe nipple 8, described in smear
Ball injected system includes that intelligent sphere 9, pitching cylinder 10, down-hole are blocked pipe nipple 11, described in 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, described medium corrosion-resistant is noted
Entering system and be injected downwardly into medium corrosion-resistant by the annular space between flow string 15 and sleeve pipe 16, medium corrosion-resistant is resisted by down-hole
Corrosive medium injects pipe nipple 8 and enters in flow string 15, and down-hole medium corrosion-resistant injects pipe nipple 8 and pipe nipple 11 is blocked successively in down-hole
It is serially connected in the flow string 15 sections on downhole packer 17.Described improvement christmas tree 1 compares conventional christmas tree, at former big four
Having concatenated a little four-way flange in the middle of flange and little four-way flange, two end valve groups B28 and valve group C29 are respectively intended to make around
For pitching and the passage of recycling, big four flange left end valve group E31 connects medium corrosion-resistant injected system, is used for production
Annular space between tubing string 15 and sleeve pipe 16 injects medium corrosion-resistant, and the function of other parts of christmas tree keeps constant.Described anti-corruption
Medium corrosion-resistant storage tank 2 in erosion medium injected system, injection pump 3, annular space high-voltage power supply 4, effusion meter 5, Pressure gauge 6 all pass through
Ground is injected pipeline 7 and is connected to improve in christmas tree 1 big four flange left end valve group E31, and described injection pipe nipple 8 is serially connected in down-hole
Flow string above packer 17 15 sections, it substantially increases wall thickness at annular space and to be provided with the flow string of check valve 21 short
Joint, 21, set check valve allows medium corrosion-resistant to flow into flow string 15 from the annular space between flow string 15 and sleeve pipe 16
In, not allowing reverse flow, set check valve 21 can be one or more.The described pitching cylinder smearing ball injected system
10 are provided with sealing lid, and intelligent sphere 9 can effectively seal after putting into, it is ensured that under intelligent sphere 9 is smooth in improving christmas tree 1
Fall, described in smear the down-hole of ball injected system pipe nipple 11 of blocking and be serially connected in down-hole medium corrosion-resistant and inject the production above pipe nipple 8
Tubing string 15 sections, it substantially increases inner flow passage wall thickness and continues, to stop ball, the flow string pipe nipple of whereabouts, do not affect gas and
Passing through of medium corrosion-resistant.Described smear control and the air-flow velocity of recovery and processing system and intelligent sphere motion control device 12,
Separating and reclaiming device 14 is sequentially connected in series at the valve group C29 right-hand member improving christmas tree 1, described air-flow velocity and intelligent sphere motor control
Device 12 and computer control unit 13 use wirelessly or non-wirelessly communication mode.Described smearing controls and the air-flow of recovery and processing system
It is provided with flow control valve, it is possible to control the flow velocity of fluid, thus reach to control in flow velocity and intelligent sphere motion control device 12
The direction of motion of intelligent sphere 9 and speed, this device is also built-in with signal receiver and signal projector, it is possible to and computer control
Unit 13 real-time Transmission, signal receiver and signal projector installation and connection method and normal signal transceiver method of attachment one
Cause, be provided with line interface and wireless receiving and dispatching port.Described intelligent sphere 9 be internally provided with sender unit, air-flow velocity and
Intelligent sphere motion control device 12 can be strong and weak to carry out the ginseng such as position, speed by the radio signal that intelligent sphere 9 is sent
The monitoring of number and transmission.
The using method of the present invention is as follows:
(1) this device is firstly the need of installing before entering flow string under gas well and debugging: under ground portion is mainly
Pipe nipple 11 and the down-hole medium corrosion-resistant of being blocked down-hole is injected pipe nipple 8 and is serially connected in downhole packer 17 top of flow string 15
Section.Tradition christmas tree is mainly modified by above ground portion, has concatenated one in the middle of former big four flange and little four-way flange
Individual little four-way flange, two ends arrange valve group B28 and valve group C29 is respectively intended to the passage as pitching and recycling around,
The function of other parts of christmas tree is held essentially constant, and does not interferes with normal gas production operation.Medium corrosion-resistant injected system, painting
Smear ball injected system and smear control and three parts of recovery and processing system according to the method that the present invention provides carry out install with
Debugging, to ensure the normal use of each component function.
(2) after installation and debugging complete, what needs were carried out is the operation of medium corrosion-resistant injection: as shown in Figure 1 and Figure 7, closes
Valve closing door A27, opens valve group C29 and valve J36, and confirms that valve D30 remains on, and confirms valve H34 and valve I35
It is closed, to ensure normally carrying out of gas production operation.Open valve group E31 and valve F32, open injection pump 3, will be anti-
In corrosive medium storage tank 2, the medium corrosion-resistant of a certain amount of volume pumps into the annular space between flow string 15 and sleeve pipe 16, passes through
Effusion meter 5 can control accurately inject medium corrosion-resistant volume, should close after reaching the injected slurry volume of requirement injection pump 3 with
And valve F22.Open valve G33, the gas in annular space high-voltage power supply 4 injected the annular space between flow string 15 and sleeve pipe 16,
Pressure gauge 6 can show the pressure size in annular space.When down-hole medium corrosion-resistant injects the annular pressure around pipe nipple 8 and production
After tubing string 15 intrinsic pressure reaches certain pressure reduction, check valve 21 will be pressed off, and make the medium corrosion-resistant being previously injected in annular space by single
Enter in flow string 15 to valve 21, now should suitably adjust valve F33 aperture according to the pressure size shown by Pressure gauge 6,
Smear when for the last time and valve G33 when operation completes, can be closed.
(3) then carry out smearing the associative operation that ball injects: confirm that valve group B28 is closed, open pitching cylinder 10
Sealing lid, as shown in Figure 4 intelligent sphere 9 is put into pitching cylinder 10 and closes and seal lid.Open valve D and valve group B, and pass through
Air-flow velocity and intelligent sphere motion control device 12 regulate air-flow velocity, it is ensured that intelligent sphere 9 can drop to down-hole smoothly and block
At pipe nipple 11.Valve closing group B28 is closed after confirmation intelligent sphere 9 comes in flow string.
(4) carry out medium corrosion-resistant subsequently and smear operation: be provided with in air-flow velocity and intelligent sphere motion control device 12
Flow control valve, it is possible to control the flow velocity of air-flow, thus reach to control the direction of motion and the speed of intelligent sphere 9, when intelligent sphere 9 falls
Enter down-hole block pipe nipple 11 time, as shown in Figure 8, air-flow velocity and intelligent sphere motion control device 12 will raise air-flow stream automatically
Speed, it is ensured that 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, make intelligent sphere 9 again move downward, intelligent sphere
The number of times that moves back and forth of 9 is determined by the smear layer thickness requirement of flow string inwall medium corrosion-resistant.Air-flow velocity and intelligence
Communication mode wirelessly or non-wirelessly, computer control unit 13 is used to pacify between ball motion control device 12 and computer control unit 13
Equipped with correlation computations and control program, the related data that air-flow velocity and intelligent sphere motion control device 12 can be provided and letter
Number it is analyzed and calculates, such as flow velocity, flow etc..The internal signal projector equipped with strength of stability of intelligent sphere 9, air-flow velocity
And intelligent sphere motion control device 12 can send the power of signal according to intelligent sphere 9 and combine the calculating of computer control unit 13
Program draws the particular location of intelligent sphere 9, thus adjusts air-flow velocity in good time, changes stress and the kinestate of ball.
(5) carry out after medium corrosion-resistant is smeared and operated is recovery and the recovery of medium corrosion-resistant of intelligent sphere:
Medium corrosion-resistant separates with extraction gas and carries out in separating and reclaiming device 14 the most always, extraction 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
The gravitational differentiation of different fluid realizes separating, and extraction gas separated retracting device outlet 1#141 enters gas production main line, anti-
Corrosive medium the most gradually gathers separating and reclaiming device 14 bottom.After returning on intelligent sphere 9 is last, 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 bottom separating and reclaiming device 14.Intelligent sphere 9 should open valve after falling into separating and reclaiming device 14
A27, closes valve closing group C29 and valve J36.After emptying separating and reclaiming device 14 upper gas pressure, open valve I35, by dividing
The medium corrosion-resistant of bottom is discharged to reclaim and to process from retracting device outlet 2#142.Close after medium corrosion-resistant emptying
Valve closing door I35, opens valve H34, is taken out intelligent sphere 9 by separating and reclaiming device outlet 3#143 and is carried out maintaining, receiving ball
Valve H34 should be closed after completing.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, and all terms used herein (include technology art
Language and scientific terminology) have with the those of ordinary skill in art of the present invention be commonly understood by identical meaning.Also should
Being understood by, those terms defined in such as general dictionary should be understood that the meaning having with the context of prior art
The meaning that justice is consistent, and unless defined as here, will not explain by idealization or the most formal implication.
One of ordinary skill in the art will appreciate that: the parts in device in embodiment can describe according to embodiment and divide
It is distributed in the device of embodiment, it is also possible to carry out respective change and be disposed other than in one or more devices of the present embodiment.On
The parts stating embodiment can merge into parts, it is also possible to is further split into multiple subassembly.
It should be noted last that: the foregoing is only presently preferred embodiments of the present invention, not in order to limit this
Bright, although the present invention being described in detail with reference to above-described embodiment, it will be apparent to an ordinarily skilled person in the art that: still
Can modify the present invention or equivalent, any amendment or local without departing from the spirit and scope of the present invention are replaced
Changing, it all should be contained in the middle of scope of the presently claimed invention.
Claims (10)
1. an acid gas well flow string inwall medium corrosion-resistant automatic painting apparatus, it is characterised in that include improving gas production
Tree, medium corrosion-resistant injected system, smear ball injected system, smear control and recovery and processing system；Described improvement christmas tree is
Two the little four-way flanges connected from top to bottom and a big four flange；
Described medium corrosion-resistant injected system includes medium corrosion-resistant storage tank, injection pump, annular space high-voltage power supply, effusion meter, pressure
Table, ground inject pipeline, down-hole medium corrosion-resistant injects pipe nipple；Described media storage tank is by injection pump with annular space high-voltage power supply also
It is linked to ground and injects pipeline, then by the big four flange of effusion meter Innovation of Connection christmas tree bottom, effusion meter and christmas tree
Between be provided with Pressure gauge, down-hole medium corrosion-resistant is injected pipe nipple and is arranged on bottom flow string；
Described ball injected system of smearing includes that intelligent sphere, pitching cylinder, down-hole are blocked pipe nipple；Described pitching cylinder is connected to improve gas production
On little four-way flange in the middle of tree, down-hole pipe nipple of blocking is arranged on flow string bottom, is positioned at down-hole and injects on pipe nipple；
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 arranged on separating and reclaiming device and improve in the middle of christmas tree
In the pipeline of little four-way Flange joint, computer control unit connects and controls air-flow velocity and intelligent sphere motion control device；
Described medium corrosion-resistant injected system is injected downwardly into medium corrosion-resistant, anti-corruption by the annular space between flow string and sleeve pipe
Erosion medium injects pipe nipple by down-hole medium corrosion-resistant and enters in flow string.
A kind of acid gas well flow string inwall medium corrosion-resistant automatic painting apparatus the most according to claim 1, it is special
Levying and be, described improvement christmas tree compares conventional christmas tree, has concatenated one in the middle of former big four flange and little four-way flange
Little four-way flange, is respectively arranged at two ends with valve group B and valve group C about middle little four-way flange, be respectively intended to connect pitching cylinder and
Separating and reclaiming device；Big four left end is provided with valve group E, is used for connecting medium corrosion-resistant injected system.
A kind of acid gas well flow string inwall medium corrosion-resistant automatic painting apparatus the most according to claim 1, it is special
Levying and be, described injection pipe nipple is serially connected in the flow string section above downhole packer, is provided with and adds laterally in the middle part of injection pipe nipple
Thick extension diameter section, is provided with the check valve of ecto-entad circulation at extension diameter section, and check valve quantity is at least one.
A kind of acid gas well flow string inwall medium corrosion-resistant automatic painting apparatus the most according to claim 1, it is special
Levy and be, described in smear the pitching cylinder of ball injected system and be provided with sealing lid, intelligent sphere closes top cover labyrinth after putting into.
A kind of acid gas well flow string inwall medium corrosion-resistant automatic painting apparatus the most according to claim 1, it is special
Levy and be, described in smear the down-hole of ball injected system pipe nipple of blocking and be serially connected in down-hole medium corrosion-resistant and inject the production above pipe nipple
Tubing string section, down-hole blocks and is provided with the undergauge section thickeied to inner side in the middle part of pipe nipple, and intelligent sphere diameter is more than undergauge section internal diameter.
A kind of acid gas well flow string inwall medium corrosion-resistant automatic painting apparatus the most according to claim 1, it is special
Levying and be, described air-flow velocity and intelligent sphere motion control device and computer control unit use wirelessly or non-wirelessly communication mode.
A kind of acid gas well flow string inwall medium corrosion-resistant automatic painting apparatus the most according to claim 1, it is special
Levy and be, described in smear control and the air-flow velocity of recovery and processing system and intelligent sphere motion control device in be provided with flow-control
Valve, air-flow velocity and intelligent sphere motion control device are provided with signal receiver and signal projector.
A kind of acid gas well flow string inwall medium corrosion-resistant automatic painting apparatus the most according to claim 1, it is special
Levying and be, upper end, described separating and reclaiming device side is provided with separating and reclaiming device outlet 1#, the predominantly extraction gas flowed out,
Being directly connected on gas production main line, lower end, described separating and reclaiming device side is provided with separating and reclaiming device outlet 2#, is mainly used in
The recovery of medium corrosion-resistant, described separating and reclaiming device bottom is provided with separating and reclaiming device outlet 3#, for the recovery of intelligent sphere.
A kind of acid gas well flow string inwall medium corrosion-resistant automatic painting apparatus the most according to claim 1, it is special
Levy and be, described intelligent sphere be internally provided with sender unit.
10. a using method for acid gas well flow string inwall medium corrosion-resistant automatic painting apparatus, step is as follows:
1) first carry out the installation of acid gas well flow string inwall medium corrosion-resistant automatic painting apparatus, enter improving christmas tree
Row assemble, and respectively connect medium corrosion-resistant injected system, smear ball injected system, smear control and recovery and processing system, right
Flow string installs down-hole medium corrosion-resistant additional and injects pipe nipple and block pipe nipple in down-hole, should inject system according to medium corrosion-resistant after completing
System, smear ball injected system, smear control and the connection of three parts of recovery and processing system is installed and debugged；
2), when using, first pass through medium corrosion-resistant injected system and carry out the injection of medium corrosion-resistant；When down-hole medium corrosion-resistant
Injecting after the check valve of pipe nipple opens, throw in intelligent sphere by smearing ball injected system, down-hole pipe nipple of blocking is possible to prevent intelligence
Ball falls into shaft bottom；When intelligent sphere one enters in flow string, smear control and the air-flow velocity of recovery and processing system and intelligent sphere
Motion control device begins to work, is controlled the moving situation of intelligent sphere by regulation air-flow velocity so that it is according to required speed
Degree moves up or repeatedly moves up and down, to improve the scribble effect of medium corrosion-resistant；Separating and reclaiming device is in operation process
Separation extraction gas and the effect of medium corrosion-resistant can be played, and after operation completes, carry out the recovery of intelligent sphere；
3) smear after operation completes, it is only necessary to close and open corresponding valve and can recover normal gas production operation, next time
Medium corrosion-resistant inject operation and will not reinstall equipment at needs, i.e. can to realize acid gas well motionless for this device and method
Tubing string, the most subjobs, reduce flow string corrosion and damage probability, extends tubing string safely, quickly, 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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| CN106837247A (en) * | 2017-03-19 | 2017-06-13 | 西南石油大学 | A kind of Oil/gas Well oil jacket annular space corrosion inhibiter fountain fills technique and device |
| CN113006743A (en) * | 2021-03-23 | 2021-06-22 | 西南石油大学 | Automatic coating process for gas recovery well corrosion inhibition liquid |
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| Publication number | Publication date |
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| CN106285503B (en) | 2018-06-15 |
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