CN104405301A - Production string for preventing and controlling freezing and blocking of natural gas well - Google Patents
Production string for preventing and controlling freezing and blocking of natural gas well Download PDFInfo
- Publication number
- CN104405301A CN104405301A CN201410492188.6A CN201410492188A CN104405301A CN 104405301 A CN104405301 A CN 104405301A CN 201410492188 A CN201410492188 A CN 201410492188A CN 104405301 A CN104405301 A CN 104405301A
- Authority
- CN
- China
- Prior art keywords
- natural gas
- gas well
- tubule
- frozen block
- string
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002343 natural gas well Substances 0.000 title claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 title abstract description 5
- 230000000903 blocking effect Effects 0.000 title abstract 5
- 230000008014 freezing Effects 0.000 title abstract 5
- 238000007710 freezing Methods 0.000 title abstract 5
- 239000003112 inhibitor Substances 0.000 claims abstract description 22
- 238000002347 injection Methods 0.000 claims abstract description 10
- 239000007924 injection Substances 0.000 claims abstract description 10
- 210000005239 tubule Anatomy 0.000 claims description 30
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 4
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 4
- 239000010962 carbon steel Substances 0.000 claims description 4
- 239000011152 fibreglass Substances 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 8
- 239000007789 gas Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000000243 solution Substances 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
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/0021—Safety devices, e.g. for preventing small objects from falling into the borehole
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Pipe Accessories (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
The invention discloses a production string for preventing and controlling freezing and blocking of a natural gas well, which receives an inhibitor from an injection pump through a thin pipe, guides the inhibitor into a freezing and blocking point of a gas production string through a check valve, can directly inject the inhibitor into the freezing and blocking point of the production string from a well head, and cannot be diluted and dispersed, so that the effective utilization and the effect of preventing and controlling freezing and blocking can be ensured.
Description
Technical field
The present invention relates to oil and gas exploration technical field, particularly a kind of natural gas well frozen block control flow string.
Background technology
At present, each oil field generally adopts the mode of the continuous injecting inhibitor of wellhead casing pipe to solve the hydrate frozen block of gas production, its inhibitor enters in tubing string bottom flow string, return again to frozen block point and play a role, thus can be diluted in sleeve pipe and flow string and be disperseed before this, affect it and effectively utilize and frozen block prevention effect.
Summary of the invention
Technical problem to be solved by this invention is dilution and the dispersion that existing tubing string can cause inhibitor, and then affects the frozen block prevention effect of inhibitor.Therefore, the invention provides a kind of natural gas well frozen block control flow string, be used for replacing original tubing string, prevent inhibitor from diluting and dispersion.
For solving the problems of the technologies described above, the invention provides a kind of natural gas well frozen block control flow string, comprising:
Aerogenesis tubing string, bottom is horn mouth, and top is arranged on natural gas well head, and described aerogenesis tubing string has frozen block point;
Packer, is connected with described aerogenesis tubing string, for flow string described in packing;
Ball-and-seat, is arranged on the frozen block point of described aerogenesis tubing string, for controlling the flow direction of inhibitor;
Tubule, described tubule lower end is connected with described ball-and-seat, described tubule upper end is connected with the injection pump being arranged on described natural gas well head place, wherein, described tubule is arranged at described generating tube column outer wall, wherein, described tubule is used for receiving described inhibitor from described injection pump, and described inhibitor is imported the frozen block point of described aerogenesis tubing string by ball-and-seat.
Preferably, the outer wall of described aerogenesis tubing string has box cupling, and described box cupling place is provided with fixing card; Described tubule is fixedly fastened at described box cupling place by described.
Preferably, described tubule is metal coiled tubing.
Preferably, described tubule is alloy steel coiled tubing.
Preferably, described tubule is non metal continuous oil pipe.
Preferably, described tubule is carbon steel coiled tubing.
Preferably, described tubule is the glass fiber reinforced plastic coiled tubing of band reinforcing mat or the plastics coiled tubing of band reinforcing mat.
One or more technique effect of the present invention is as follows:
A kind of natural gas well frozen block control flow string provided by the invention, described inhibitor is received from described injection pump by tubule, and described inhibitor is imported the frozen block point of described aerogenesis tubing string by ball-and-seat, directly inhibitor can be injected into the frozen block point of flow string from well head, can not be diluted and be disperseed, thus can be ensured the effect that it effectively utilizes and frozen block is prevented and treated.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the frozen block of the natural gas well disclosed in embodiment of the present invention control flow string.
Accompanying drawing illustrates: pump 1, well head 2, box cupling 3, fixing card 4, aerogenesis tubing string 5, packer 7, horn mouth 8, tubule 9.
Detailed description of the invention
The invention provides a kind of natural gas well frozen block control flow string, comprising:
Aerogenesis tubing string 5, bottom is horn mouth 8, and top is arranged on natural gas well head, and aerogenesis tubing string 5 has frozen block point.
Packer 7 is connected with aerogenesis tubing string 5, for flow string described in packing.
A ball-and-seat 6 is installed, for controlling the flow direction of inhibitor at the frozen block point place of aerogenesis tubing string 5.
Tubule 9, tubule 9 lower end is connected with ball-and-seat 6, and tubule 9 upper end is connected with the injection pump 1 being arranged on described natural gas well head place, and wherein, described tubule 9 is parallel to described aerogenesis tubing string 5 outer wall.Wherein, described inhibitor for receiving described inhibitor from injection pump 1, and is imported the frozen block point of described aerogenesis tubing string 5 by tubule 9 by ball-and-seat 6.
In addition, the outer wall of aerogenesis tubing string 5 has box cupling 3, and described box cupling 3 place is provided with fixing card 4.
Tubule 9 is that the fixing card 4 by being arranged on its box cupling 3 place is positioned on the outer tube wall of flow string 5.
Optionally, tubule 9 can be the plain tubing of small diameter, also can be carbon steel coiled tubing, alloy steel coiled tubing, metal coiled tubing, the glass fiber reinforced plastic coiled tubing of band reinforcing mat, the plastics coiled tubing of band reinforcing mat.
The natural gas well frozen block control operating principle of flow string and using method are: first according to natural gas well frozen block point degree of depth determination ball-and-seat 6 in the position of aerogenesis tubing string 5, on the casing flange of its well head 2, then process the salable through hole of capillary tube 9; Just can by entering aerogenesis tubing string 5 under design data, when accessing capillary tube 9 down to during ball-and-seat 6 place, capillary tube 9 can select plain tubing according to actual needs, also the glass fiber reinforced plastic coiled tubing of carbon steel, alloy steel coiled tubing or band reinforcing mat, the plastics coiled tubing of band reinforcing mat can be selected, and corresponding working equipment, with entering aerogenesis tubing string 5 and capillary tube 9 at present; Under draw in the salable through hole capillary tube 9 processed on casing flange when having entered rear installation well head 2, and to be connected with injection pump 1.Then be directly injected into the frozen block point place of aerogenesis tubing string 5 when the natural gas well is produced from the inhibitor of injection pump 1 by capillary tube 9 and ball-and-seat 6, can not be diluted and disperse, thus can ensure the effect that it effectively utilizes and frozen block is prevented and treated.
One or more technique effect of the present invention is as follows:
A kind of natural gas well frozen block control flow string provided by the invention, directly can be injected into the frozen block point of flow string, can not be diluted and disperse, thus can ensure the effect that it effectively utilizes and frozen block is prevented and treated by inhibitor from well head.
It should be noted last that, above detailed description of the invention is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to example to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (6)
1. a natural gas well frozen block control flow string, is characterized in that, comprising:
Aerogenesis tubing string, bottom is horn mouth, and top is arranged on natural gas well head, and described aerogenesis tubing string has frozen block point;
Packer, is connected with described aerogenesis tubing string, for flow string described in packing;
Ball-and-seat, is arranged on the frozen block point of described aerogenesis tubing string, for controlling the flow direction of inhibitor;
Tubule, described tubule lower end is connected with described ball-and-seat, described tubule upper end is connected with the injection pump being arranged on described natural gas well head place, wherein, described tubule is arranged at described generating tube column outer wall, wherein, described tubule is used for receiving described inhibitor from described injection pump, and described inhibitor is imported the frozen block point of described aerogenesis tubing string by ball-and-seat.
2. natural gas well frozen block control flow string as claimed in claim 1, is characterized in that,
The outer wall of described aerogenesis tubing string has box cupling, and described box cupling place is provided with fixing card;
Described tubule is fixedly fastened at described box cupling place by described.
3. natural gas well frozen block control flow string as claimed in claim 1 or 2, it is characterized in that, described tubule is metal coiled tubing.
4. natural gas well frozen block control flow string as claimed in claim 3, it is characterized in that, described tubule is alloy steel coiled tubing.
5. natural gas well frozen block control flow string as claimed in claim 3, it is characterized in that, described tubule is carbon steel coiled tubing.
6. natural gas well frozen block control flow string as claimed in claim 3, is characterized in that, described tubule is the glass fiber reinforced plastic coiled tubing of band reinforcing mat or the plastics coiled tubing of band reinforcing mat.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201410492188.6A CN104405301B (en) | 2014-09-23 | 2014-09-23 | Production string for preventing and controlling freezing and blocking of natural gas well |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201410492188.6A CN104405301B (en) | 2014-09-23 | 2014-09-23 | Production string for preventing and controlling freezing and blocking of natural gas well |
Publications (2)
Publication Number | Publication Date |
---|---|
CN104405301A true CN104405301A (en) | 2015-03-11 |
CN104405301B CN104405301B (en) | 2017-11-07 |
Family
ID=52642958
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201410492188.6A Active CN104405301B (en) | 2014-09-23 | 2014-09-23 | Production string for preventing and controlling freezing and blocking of natural gas well |
Country Status (1)
Country | Link |
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CN (1) | CN104405301B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110984909A (en) * | 2019-11-21 | 2020-04-10 | 西安安森智能仪器股份有限公司 | Automatic anti-freezing method and system for natural gas wellhead external pipeline |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2302513C2 (en) * | 2004-05-17 | 2007-07-10 | Открытое акционерное общество "Акционерная нефтяная компания "Башнефть" | Method for reagent injection in well |
RU2388905C1 (en) * | 2008-11-18 | 2010-05-10 | Закрытое акционерное общество "Алойл" | Method of preparation and supply of liquid-gas mixture to bed |
RU2445450C2 (en) * | 2010-02-24 | 2012-03-20 | Республиканское Унитарное Предприятие "Производственное Объединение "Белоруснефть" | Oil production method, and valve device for its implementation |
CN102444396A (en) * | 2012-01-04 | 2012-05-09 | *** | Natural gas production method |
RU2464409C1 (en) * | 2011-04-07 | 2012-10-20 | Ильдар Зафирович Денисламов | Method of feeding reagent into well tubing |
CN203626623U (en) * | 2013-11-08 | 2014-06-04 | 中国石油天然气股份有限公司 | Take natural gas well annular space protection oil casing of self sealss ability |
-
2014
- 2014-09-23 CN CN201410492188.6A patent/CN104405301B/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2302513C2 (en) * | 2004-05-17 | 2007-07-10 | Открытое акционерное общество "Акционерная нефтяная компания "Башнефть" | Method for reagent injection in well |
RU2388905C1 (en) * | 2008-11-18 | 2010-05-10 | Закрытое акционерное общество "Алойл" | Method of preparation and supply of liquid-gas mixture to bed |
RU2445450C2 (en) * | 2010-02-24 | 2012-03-20 | Республиканское Унитарное Предприятие "Производственное Объединение "Белоруснефть" | Oil production method, and valve device for its implementation |
RU2464409C1 (en) * | 2011-04-07 | 2012-10-20 | Ильдар Зафирович Денисламов | Method of feeding reagent into well tubing |
CN102444396A (en) * | 2012-01-04 | 2012-05-09 | *** | Natural gas production method |
CN203626623U (en) * | 2013-11-08 | 2014-06-04 | 中国石油天然气股份有限公司 | Take natural gas well annular space protection oil casing of self sealss ability |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110984909A (en) * | 2019-11-21 | 2020-04-10 | 西安安森智能仪器股份有限公司 | Automatic anti-freezing method and system for natural gas wellhead external pipeline |
CN110984909B (en) * | 2019-11-21 | 2022-02-18 | 西安安森智能仪器股份有限公司 | Automatic anti-freezing method and system for natural gas wellhead external pipeline |
Also Published As
Publication number | Publication date |
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CN104405301B (en) | 2017-11-07 |
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