CN102278073A - Water injection pipe for marine water injection well - Google Patents
Water injection pipe for marine water injection well Download PDFInfo
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- CN102278073A CN102278073A CN2011101043068A CN201110104306A CN102278073A CN 102278073 A CN102278073 A CN 102278073A CN 2011101043068 A CN2011101043068 A CN 2011101043068A CN 201110104306 A CN201110104306 A CN 201110104306A CN 102278073 A CN102278073 A CN 102278073A
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- water injection
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- injection pipe
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- pipe body
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Abstract
The invention discloses a water injection pipe for a marine water injection well. The water injection pipe comprises pipe bodies, wherein two ends of each pipe body is provided with outer threads, the pipe bodies are connected through a collar provided with inner threads, the end parts of the outer threads of each pipe body are provided with nose ends which are axially elongated along the pipe body, a radial inner lug is arranged on the inner wall in the middle of the collar, and the thickness of each nose end is consistent with the height of the radial inner lug so that the inner diameters of the water injection pipes are consistent; a polytetrafluoroethylene gasket is arranged between the radial inner lug and the nose end of each pipe body; and an epoxy resin protection layer is respectively arranged on the inner wall of each pipe body and the surface of the radial inner lug of the collar. According to the invention, the inner diameters of the water injection pipes are completely consistent by adopting the pipe body thread structure with the nose ends and the collar structure with the radial inner lug, therefore the influence brought from vertex is effectively eliminated, serious washout and large-area scale formation are further prevented, the continuous service life of the water injection pipe is prolonged, the water injection efficiency is improved, the water injection amount and the stratum pressure are increased, and the outage maintenance frequency and the production cost are reduced.
Description
Technical field
The present invention relates to the part of appliance of producing oil, gas, water, solubilized or fusible material or slurry of mineral from well, specifically, relate to a kind of water injection pipe that is used for marine water injection well.
Background technology
In oil field development, along with oil reservoirs are constantly developed, can occur output inevitably and reduce, therefore the situation that tar productivity reduces needs by beating water injection well to the oil reservoirs water filling, reaching the effect of the displacement of reservoir oil, the stable yields in realization oil field, reproduces.Water injection pipe is the pipeline of water filling in oil reservoirs just, so the height of its water-injection efficiency will influence water injection rate to a great extent, thereby influences the output and the operating efficiency in oil field.The water injection pipe that present marine water injection well uses is common water injection pipe, and common water injection pipe is by box cupling body to be connected, and the body two ends are provided with external screw thread, and box cupling is provided with internal thread.Because screw thread adds man-hour, closely apart from having certain limit, when body is connected with box cupling, there is certain clearance in screw thread between the two body ends, will form a groove in body end, two ends and box cupling like this, as shown in Figure 1.
This common water injection pipe in use because the high pressure high flow rate effect of fluid in the water injection pipe, the groove location of body and box cupling junction can form stronger eddy current, thereby water injection pipe is produced destruction, the phenomenon of serious erosion and large tracts of land fouling occurs.Erosion causes water injection pipe can not continue to use, and needs in time to change; The large tracts of land fouling causes the water injection pipe internal diameter to diminish, and the body internal pressure increases, thereby causes water injecting pump the pump phenomenon to occur suppressing, needs to shut down maintenance.Therefore the continuous operation life-span of present common water injection pipe shorter, only one year about, it is comparatively frequent to shut down maintenance, thereby causes the operating efficiency of marine water injection well lower, cost of production is higher.
Summary of the invention
The present invention will solve is that the water injection pipe of marine water injection well in the prior art is in use, owing to twist the place's of connecing formation eddy current and water injection pipe produced the technical problem of erosion and fouling at box cupling, a kind of water injection pipe of new structure is provided, can enhance productivity, reduce production costs, satisfy more and produce needs.
In order to solve the problems of the technologies described above, the present invention is achieved by following technical scheme:
A kind of water injection pipe that is used for marine water injection well, comprise that two ends are provided with externally threaded body, by being set, female box cupling connects between the described body, the externally threaded end of described body is provided with along the nose of described body axial elongation, inwall in the middle of the described box cupling is provided with radially inner convex platform, the thickness of described nose is consistent with the height of described radially inner convex platform, so that described body is consistent with its internal diameter after described box cupling is connected to water injection pipe.
Be provided with elastic washer between the radially inner convex platform of described box cupling and the nose of described body.
Described elastic washer is a polytetrafluoroethylene gasket.
The radially inner convex platform surface of described inboard wall of tube body and described box cupling is provided with the epoxy resin topping.
The invention has the beneficial effects as follows:
(1) the present invention adopts the body helicitic texture of band nose and has the radially box cupling structure of inner convex platform; it is in full accord to make that body and box cupling connect into after the water injection pipe its internal diameter; eliminate effectively because the influence that eddy current brings; and then prevent serious erosion and large tracts of land fouling; prolong more than the continuous operation life-span working life to 3 year of water injection pipe; improved water-injection efficiency; increased water injection rate; improved strata pressure; dwindle the frequency of shutting down maintenance to a great extent, also reduced cost of production.
(2) scribble the epoxy resin topping in body and the box cupling inwall, the screw connection structure form consistent with the water injection pipe internal diameter combines, and its anticorrosion good antiscale property performance is better.
(3) between the nose metal covering of the radially inner convex platform of box cupling of the present invention and body polytetrafluoroethylene gasket is arranged, under the situation of high pressure high flow rate, prevent the wearing and tearing of protective coating between the metal covering, effectively protection ring epoxy resins topping.
Description of drawings
Fig. 1 is the structural representation of water injection pipe in the prior art;
Fig. 2 is an overall structure schematic diagram of the present invention;
Fig. 3 is the structural representation of middle tube body of the present invention;
Fig. 4 is the structural representation of box cupling among the present invention.
Among the figure: 1: body, 2: external screw thread, 3: nose, 4: inner convex platform radially, 5: box cupling, 6 internal threads, 7: elastic washer.
The specific embodiment
The present invention is described in further detail below in conjunction with drawings and Examples:
As shown in Figure 2, present embodiment has disclosed a kind of water injection pipe that is used for marine water injection well, comprises that two ends are provided with the body 1 of external screw thread 2, connects by the box cupling 5 that is provided with internal thread 6 between per two sections bodys 1.
As shown in Figure 3, the end of the external screw thread 2 of body 1 is provided with nose 3, and nose 3 extends along body 1 axial direction.
As shown in Figure 4, the inwalls in the middle of the box cupling 5 are provided with radially inner convex platform 4, in conjunction with Fig. 2, on the body 1 thickness of nose 3 should with box cupling 5 on radially the height of inner convex platform 4 is consistent so that body 1 is connected to form after the water injection pipe its complete internal diameter unanimity with box cupling 5.
As optimized technical scheme comparatively, be provided with elastic washer 7 between the radially inner convex platform 4 of box cupling 5 and the nose 3 of body 1.This elastic washer 7 needs has certain elasticity, and standard compliant have materials such as polytetrafluoroethylene (PTFE), nylon, and wherein polytetrafluoroethylene gasket more can meet the requirements, and the use on market is also more general.
In addition, radially inner convex platform 4 surfaces of body 1 inwall and box cupling 5 are provided with the epoxy resin topping, so that all there is the epoxy resin topping on the exposed surface of water injection pipe inwall after connecting, thereby play the corrosion-resistant effect completely.The epoxy resin topping combines with the screw connection structure form, and its anticorrosion good antiscale property performance is better.
Although in conjunction with the accompanying drawings the preferred embodiments of the present invention are described above; but the present invention is not limited to the above-mentioned specific embodiment; the above-mentioned specific embodiment only is schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not breaking away under the scope situation that aim of the present invention and claim protect, can also make the concrete conversion of a lot of forms, these all belong within protection scope of the present invention.
Claims (4)
1. water injection pipe that is used for marine water injection well, comprise that two ends are provided with externally threaded body, by being set, female box cupling connects between the described body, it is characterized in that, the externally threaded end of described body is provided with along the nose of described body axial elongation, inwall in the middle of the described box cupling is provided with radially inner convex platform, and the thickness of described nose is consistent with the height of described radially inner convex platform, so that described body is consistent with its internal diameter after described box cupling is connected to water injection pipe.
2. a kind of water injection pipe that is used for marine water injection well according to claim 1 is characterized in that, is provided with elastic washer between the radially inner convex platform of described box cupling and the nose of described body.
3. a kind of water injection pipe that is used for marine water injection well according to claim 2 is characterized in that described elastic washer is a polytetrafluoroethylene gasket.
4. a kind of water injection pipe that is used for marine water injection well according to claim 1 is characterized in that, the radially inner convex platform surface of described inboard wall of tube body and described box cupling is provided with the epoxy resin topping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101043068A CN102278073A (en) | 2011-04-25 | 2011-04-25 | Water injection pipe for marine water injection well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101043068A CN102278073A (en) | 2011-04-25 | 2011-04-25 | Water injection pipe for marine water injection well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102278073A true CN102278073A (en) | 2011-12-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101043068A Pending CN102278073A (en) | 2011-04-25 | 2011-04-25 | Water injection pipe for marine water injection well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102278073A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106287044A (en) * | 2016-08-16 | 2017-01-04 | 陆金福 | There is the screw connection structure of the band coating steel pipe of corrosion proof function |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2096680U (en) * | 1991-07-10 | 1992-02-19 | 湖北省大冶县牛山煤矿 | Drainage antirot tube |
| CN2502101Y (en) * | 2001-09-20 | 2002-07-24 | 盛斌 | Metal connecting pipe fitting |
| WO2003074835A1 (en) * | 2002-03-04 | 2003-09-12 | Weatherford/Lamb, Inc. | Rapid locking tubular coupling device |
| CN200996272Y (en) * | 2006-12-26 | 2007-12-26 | 大庆石油管理局 | High-strength sealed double pipe |
| JP2009281520A (en) * | 2008-05-23 | 2009-12-03 | Nbl Kk | Screw structure of high pressure frp pipe |
| CN201412076Y (en) * | 2009-06-09 | 2010-02-24 | 江苏胜大石油设备制造有限公司 | Oil sleeve connector |
| CN201496000U (en) * | 2009-08-20 | 2010-06-02 | 四川华工石油钢管有限责任公司 | Structure of hermetically sealed joint of oil pipe or sleeve |
| CN101782166A (en) * | 2010-03-09 | 2010-07-21 | 广东联塑科技实业有限公司 | Plastic coated composite steel pipe |
| CN201687411U (en) * | 2010-04-27 | 2010-12-29 | 无锡法斯特能源开发科技有限公司 | Anti-corrosion coupling coaxial with oil pipe |
| CN202055810U (en) * | 2011-04-25 | 2011-11-30 | 中国海洋石油总公司 | Water injection pipe for offshore water injection well |
-
2011
- 2011-04-25 CN CN2011101043068A patent/CN102278073A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2096680U (en) * | 1991-07-10 | 1992-02-19 | 湖北省大冶县牛山煤矿 | Drainage antirot tube |
| CN2502101Y (en) * | 2001-09-20 | 2002-07-24 | 盛斌 | Metal connecting pipe fitting |
| WO2003074835A1 (en) * | 2002-03-04 | 2003-09-12 | Weatherford/Lamb, Inc. | Rapid locking tubular coupling device |
| CN200996272Y (en) * | 2006-12-26 | 2007-12-26 | 大庆石油管理局 | High-strength sealed double pipe |
| JP2009281520A (en) * | 2008-05-23 | 2009-12-03 | Nbl Kk | Screw structure of high pressure frp pipe |
| CN201412076Y (en) * | 2009-06-09 | 2010-02-24 | 江苏胜大石油设备制造有限公司 | Oil sleeve connector |
| CN201496000U (en) * | 2009-08-20 | 2010-06-02 | 四川华工石油钢管有限责任公司 | Structure of hermetically sealed joint of oil pipe or sleeve |
| CN101782166A (en) * | 2010-03-09 | 2010-07-21 | 广东联塑科技实业有限公司 | Plastic coated composite steel pipe |
| CN201687411U (en) * | 2010-04-27 | 2010-12-29 | 无锡法斯特能源开发科技有限公司 | Anti-corrosion coupling coaxial with oil pipe |
| CN202055810U (en) * | 2011-04-25 | 2011-11-30 | 中国海洋石油总公司 | Water injection pipe for offshore water injection well |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106287044A (en) * | 2016-08-16 | 2017-01-04 | 陆金福 | There is the screw connection structure of the band coating steel pipe of corrosion proof function |
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Application publication date: 20111214 |