CN104405301A - Freezing and blocking-prevention production pipe column for natural gas well - Google Patents
Freezing and blocking-prevention production pipe column for 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
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- 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.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
Abstract
The invention discloses a freezing and blocking-prevention production pipe column for a natural gas well. A slim tube is used for receiving a depressor from a filling pump and guiding the depressor to the anti-freezing point of the production pipe column by virtue of a check valve. The depressor can be directly injected into the anti-freezing point of the production pipe column from the mouth of the well without being diluted and dispersed, so that the effective utilization and freezing and blocking-prevention effects of the depressor 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 | A kind of natural gas well frozen block prevents and treats flow string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410492188.6A CN104405301B (en) | 2014-09-23 | 2014-09-23 | A kind of natural gas well frozen block prevents and treats flow string |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104405301A true CN104405301A (en) | 2015-03-11 |
| CN104405301B CN104405301B (en) | 2017-11-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410492188.6A Active CN104405301B (en) | 2014-09-23 | 2014-09-23 | A kind of natural gas well frozen block prevents and treats flow string |
Country Status (1)
| Country | Link |
|---|---|
| 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 | 李向东 | 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 | Natural gas well annulus protection oil casing with self-sealing capacity |
-
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 | 李向东 | 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 | Natural gas well annulus protection oil casing with self-sealing capacity |
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 |
|---|---|
| CN104405301B (en) | 2017-11-07 |
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