CN204827368U - Clear wax -proof equipment of condensate gas well oil pipe outer wall - Google Patents
Clear wax -proof equipment of condensate gas well oil pipe outer wall Download PDFInfo
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- CN204827368U CN204827368U CN201520358379.3U CN201520358379U CN204827368U CN 204827368 U CN204827368 U CN 204827368U CN 201520358379 U CN201520358379 U CN 201520358379U CN 204827368 U CN204827368 U CN 204827368U
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Abstract
The utility model discloses a clear wax -proof equipment of condensate gas well oil pipe outer wall for cleaing away the wax on the oil pipe outer wall and preventing to produce the wax crystalline substance, be provided with the electric heat conversion device on the outer wall of oil pipe (4), the electric heat conversion device passes through power cable (9) and power supply unit and links to each other, and power supply unit accessible power cable (9) carries the electric energy to the electric heat conversion device, and changes the electric energy into heat energy by the electric heat conversion device, with heating oil pipe's outer wall. The utility model discloses a clear wax -proof equipment of condensate gas well oil pipe outer wall can avoid the pit shaft paraffin blockage at high -pressure gas well in the production phase, separating stifled operation in -process, reducing owing to pressure is high, high including hydrogen sulfide, the high well control risk that leads to including carbon dioxide, the power supply of accessible intermittent type mode realizes cleaing away the paraffin blockage, realizes the wax removal, the power supply of accessible continuation mode realizes restraining the play of wax partial crystallization, realizes the wax control, effectual clear wax control can be carried out for a long time, the stable production of gas reservoir is realized.
Description
Technical field
The utility model relates to a kind of oil pipe paraffin removal device, particularly relates to a kind of Paraffin Removal device of condensate gas well oil-pipe external wall.
Background technology
The aboundresources of world's natural gas, in world's gas field development, special consequence is occupied in gas condensate field, according to incompletely statistics, oil in place accounts for 68% more than gas condensate field in the Giant Gas Fields of 1,000,000,000,000 sides, then account for 56% in the Large gas field of reserves more than 100,000,000,000 sides, spread all over the country in this kind of gas field of China.Along with degree of prospecting develops to deep, increasing gas condensate field finds in succession, and current total resources is 38 × 1012m
3, bright reserves 2.06 × 1012m is surveyed in the whole nation
3, recoverable reserves 1.3 × 1012m
3, wherein condensate oil in place is 11226.3 × 104t.Deep condensate is due to the reason of HTHP high-hydrogen sulfide and high condensate component, on stream, when pressure is lower than wax precipitation point and dew-point pressure, wax can be separated out with condensate in pit shaft, even block pit shaft, thus cause gas well capacity to reduce.
In the prior art, temperature in wellbore is increased to more than wax precipitation temperature to control paraffin blockage by usual utilization, this technology mainly contains downhole choke, electrical heating, alkali metal heat-dissipating and deep fat and heats 4 kinds of technology, wherein continuous heating downhole choke, be compared to ripe technology, the heating effect of the method is limited; Electric-heating technology is due to cable seal pressure-bearing low (bearing capacity is less than 25MPa), and high-pressure gas well heating-up temperature field is restricted; Oil tube heating technology is due to easy short circuit moisture in oil well, also inapplicable; The exothermic heat of reaction poor stability such as alkali metal, it is inapplicable that pit shaft blocks situation completely; Deep fat heating needs clear and definite wax period, and it is inapplicable that pit shaft blocks situation completely.
Conventional mechanical paraffin removal is also difficult to be suitable for, and its shortcoming is mainly:
1) there is impact to nickel-base alloy oil pipe in paraffin removal tool;
2) under dual corrosion medium, paraffin removal tool easily corrodes disconnected de-;
3) storm valve necking down, the risk of meeting card is high;
4) requirement of wax removal blowout prevention is higher, has larger well control risk.
Summary of the invention
The purpose of this utility model be to provide a kind of can wax removal the Paraffin Removal device of the condensate gas well oil-pipe external wall of wax control.
For achieving the above object, the concrete technical scheme of the Paraffin Removal device of a kind of condensate gas well oil-pipe external wall of the present utility model is:
A kind of Paraffin Removal device of condensate gas well oil-pipe external wall, prevent that wax is brilliant for the wax removed on oil-pipe external wall, the outer wall of oil pipe is provided with electric heating reforming unit, electric heating reforming unit is connected with electric supply installation by power cable, electric supply installation by power cable to electric heating reforming unit transmission of electric energy, and by electric heating reforming unit, electric energy conversion is become heat energy, to heat the outer wall of oil pipe.
Further, oil pipe is connected with production tree by sleeve four-way, and the electric heating reforming unit on oil-pipe external wall is connected with electric supply installation through sleeve four-way.
Further, electric heating reforming unit comprises three mineral insulated cables and an electricity cable that can form AC three-phase circuit, and mineral insulated cable and electricity cable are all vertically placed along oil pipe, are symmetric.
Further, electric supply installation comprises switch board and transformer, one end of switch board is connected with electric heating reforming unit by power cable, the other end is connected with transformer by power cable, the frequency of switch board for regulating transformer to export electric energy, transformer carries interval or continuous print electric energy by switch board to electric heating reforming unit.
Further, the outer cover of oil pipe is provided with cable clip, and electric heating reforming unit is arranged between cable clip and oil pipe, the mineral insulated cable in electric heating reforming unit and electricity cable is fixed on the outer wall of oil pipe by cable clip.
Further, the outer cover of oil pipe is provided with multi-layer cable clip.
Further, the bottom of oil pipe is arranged with link, and link is arranged on the bottom of electric heating reforming unit, and mineral insulated cable and electricity cable are linked together by link.
Further, the below of link is provided with casing packer, is located for what set casing packer the below that pipe nipple is arranged on casing packer.
Further, one end of four-way junction of casing is provided with gas production wellhead, and electric heating reforming unit is passed by the gas production wellhead of four-way junction of casing, is provided with sealing device between gas production wellhead and electric heating reforming unit.
The advantage of the Paraffin Removal device of condensate gas well oil-pipe external wall of the present utility model is:
1) in the high-pressure gas well production phase, pit shaft paraffin blockage can be avoided;
2) in de-plugging operation process, reduce because pressure is high, high-hydrogen sulfide, high carbonated and the well control risk caused;
3) power by intermittent mode, realize removing paraffin blockage, realize wax removal;
4) power by continuation mode, realize suppressing wax partial crystallization to go out, realize wax control;
5) effective Paraffin Removal can be carried out for a long time, realize the steady production of gas reservoir.
Accompanying drawing explanation
Fig. 1 is the structural representation of Paraffin Removal device of the present utility model;
Fig. 2 is the top view of the electric heating reforming unit in the utility model.
Detailed description of the invention
In order to better understand the purpose of this utility model, structure and function, below in conjunction with accompanying drawing, further detailed description is done to the Paraffin Removal device of a kind of condensate gas well oil-pipe external wall of the present utility model.
As depicted in figs. 1 and 2, it shows the Paraffin Removal device for a kind of condensate gas well oil-pipe external wall of the present utility model, prevent from again producing wax crystalline substance for the wax removed on oil-pipe external wall, wherein, the outer wall of oil pipe 4 is provided with electric heating reforming unit, electric heating reforming unit is connected with electric supply installation by power cable 9, electric supply installation by power cable 9 to electric heating reforming unit transmission of electric energy, and by electric heating reforming unit, electric energy conversion is become heat energy, to heat the outer wall of oil pipe, to realize the precipitation of removing paraffin blockage and inhibit wax crystalline substance.At the external heat cable of oil pipe, to reduce in de-plugging operation process because pressure is high, high-hydrogen sulfide, high carbonated and the well control risk caused.Wherein, oil pipe 4 is arranged in production casing 3, and oil pipe 4 is connected with production tree 1 by sleeve four-way 2, and the electric heating reforming unit on oil pipe 4 outer wall is connected with electric supply installation through sleeve four-way 2.
Further, as shown in Figure 2, electric heating reforming unit comprises three mineral insulated cables 5 and an electricity cable 12 that can form AC three-phase circuit (380V/220V), and mineral insulated cable 5 and electricity cable 12 are all vertically placed along oil pipe 4, are symmetric.
Further, electric supply installation comprises switch board 10 and transformer 11, one end of switch board 10 is connected with the electric heating reforming unit passing sleeve four-way 2 by power cable 9, the other end is connected with transformer 11 by power cable 9, the frequency of switch board 10 for regulating transformer 11 to export electric energy, transformer 11 to electric heating reforming unit conveying interval or continuous print electric current, carries the electric energy of interval by switch board 10 to electric heating reforming unit, paraffin blockage can be removed, to realize the object of wax removal; To electric heating reforming unit conveying continuous print electric energy, the precipitation of wax crystalline substance can be suppressed, to realize the object of wax control.
Further, the outer cover of oil pipe 4 is provided with cable clip 6, and electric heating reforming unit is arranged between cable clip 6 and oil pipe 4, the mineral insulated cable 5 in electric heating reforming unit and electricity cable 12 is fixed on the outer wall of oil pipe 4 by cable clip 6.Preferably, in the utility model, the outside of oil pipe is arranged with multi-layer cable clip 6 from top to bottom, and more stable is fixed on electric heating reforming unit on the outer wall of oil pipe 4.Wherein, mineral insulated cable diameter is Ф 7.8, and the conductor in mineral insulated cable 5 is annealed copper, and insulating layer is closely knit magnesium oxide layer, and the outer cover of mineral insulated cable 5 is provided with sheath, and sheath is stainless steel layer, and sheath is preferably 316L stainless steel layer.In addition, oil pipe 4 is 3
1/
2 ＂oil pipe.
Further, the bottom of oil pipe 4 is arranged with link 7, and link 7 is arranged on the bottom of electric heating reforming unit, and mineral insulated cable 5 and electricity cable 12 are linked together by link 7.In addition, the below of link 7 is provided with casing packer 8, is located the below that pipe nipple is arranged on casing packer 8, carries out pressure layering packing, casing tube anti-corrosive for what set casing packer 8, pipe nipple is located in utilization can implement later stage conventionally test seat extension, ensures that test is carried out smoothly.
Further, one end of four-way junction of casing 2 is provided with gas production wellhead, and electric heating reforming unit is passed by the gas production wellhead of four-way junction of casing 2 and is connected with electric supply installation, is provided with sealing device between gas production wellhead and electric heating reforming unit, for sealing gas production wellhead, prevents gas leakage.
The Paraffin Removal device of condensate gas well oil-pipe external wall of the present utility model, in the high-pressure gas well production phase, can avoid pit shaft paraffin blockage; In de-plugging operation process, reduce because pressure is high, high-hydrogen sulfide, high carbonated and the well control risk caused; Power by intermittent mode, realize removing paraffin blockage, realize wax removal; Power by continuation mode, realize suppressing wax partial crystallization to go out, realize wax control; Effective Paraffin Removal can be carried out for a long time, realize the steady production of gas reservoir.
By specific embodiment, the utility model is further described above; but it should be understood that; here concrete description; should not be construed as the restriction to essence of the present utility model and scope; one of ordinary skilled in the art to the various amendments that above-described embodiment is made, belongs to the scope that the utility model is protected after reading this specification.
Claims (9)
1. the Paraffin Removal device of a condensate gas well oil-pipe external wall, prevent that wax is brilliant for the wax removed on oil-pipe external wall, it is characterized in that, the outer wall of oil pipe (4) is provided with electric heating reforming unit, electric heating reforming unit is connected with electric supply installation by power cable (9), electric energy conversion to electric heating reforming unit transmission of electric energy, and is become heat energy by electric heating reforming unit, to heat the outer wall of oil pipe by power cable (9) by electric supply installation.
2. the Paraffin Removal device of condensate gas well oil-pipe external wall according to claim 1, it is characterized in that, oil pipe (4) is connected with production tree (1) by sleeve four-way (2), and the electric heating reforming unit on oil pipe (4) outer wall is connected with electric supply installation through sleeve four-way (2).
3. the Paraffin Removal device of condensate gas well oil-pipe external wall according to claim 1, it is characterized in that, electric heating reforming unit comprises three mineral insulated cables (5) and an electricity cable (12) that can form AC three-phase circuit, mineral insulated cable (5) and electricity cable (12) are all vertically placed along oil pipe (4), are symmetric.
4. the Paraffin Removal device of condensate gas well oil-pipe external wall according to claim 1, it is characterized in that, electric supply installation comprises switch board (10) and transformer (11), one end of switch board (10) is connected with electric heating reforming unit by power cable (9), the other end is connected with transformer (11) by power cable (9), the frequency of switch board (10) for regulating transformer (11) to export electric energy, transformer (11) carries interval or continuous print electric energy by switch board (10) to electric heating reforming unit.
5. the Paraffin Removal device of condensate gas well oil-pipe external wall according to claim 3, it is characterized in that, the outer cover of oil pipe (4) is provided with cable clip (6), electric heating reforming unit is arranged between cable clip (6) and oil pipe (4), the mineral insulated cable (5) in electric heating reforming unit and electricity cable (12) is fixed on the outer wall of oil pipe (4) by cable clip (6).
6. the Paraffin Removal device of condensate gas well oil-pipe external wall according to claim 5, is characterized in that, the outer cover of oil pipe (4) is provided with multi-layer cable clip (6).
7. the Paraffin Removal device of condensate gas well oil-pipe external wall according to claim 3, it is characterized in that, the bottom of oil pipe (4) is arranged with link (7), link (7) is arranged on the bottom of electric heating reforming unit, and mineral insulated cable (5) and electricity cable (12) are linked together by link (7).
8. the Paraffin Removal device of condensate gas well oil-pipe external wall according to claim 7, it is characterized in that, the below of link (7) is provided with casing packer (8), is located for what set casing packer (8) the below that pipe nipple is arranged on casing packer (8).
9. the Paraffin Removal device of condensate gas well oil-pipe external wall according to claim 2, it is characterized in that, one end of four-way junction of casing (2) is provided with gas production wellhead, electric heating reforming unit is passed by the gas production wellhead of four-way junction of casing (2), is provided with sealing device between gas production wellhead and electric heating reforming unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520358379.3U CN204827368U (en) | 2015-05-28 | 2015-05-28 | Clear wax -proof equipment of condensate gas well oil pipe outer wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520358379.3U CN204827368U (en) | 2015-05-28 | 2015-05-28 | Clear wax -proof equipment of condensate gas well oil pipe outer wall |
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| CN204827368U true CN204827368U (en) | 2015-12-02 |
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| CN201520358379.3U Active CN204827368U (en) | 2015-05-28 | 2015-05-28 | Clear wax -proof equipment of condensate gas well oil pipe outer wall |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761524A (en) * | 2016-11-17 | 2017-05-31 | 东营市金亿来石油机械有限公司 | A kind of electric heating thermal insulation anti-theft oil extracting wellhead |
| CN107387022A (en) * | 2017-09-11 | 2017-11-24 | 山东聊城金泰节能科技有限公司 | A kind of gas well Special electromagnetic circulation tubing and casing anti-block apparatus and its application |
| CN108119098A (en) * | 2017-11-15 | 2018-06-05 | 中国石油天然气集团公司 | Well-head wax removal device and method |
| CN113738287A (en) * | 2020-05-29 | 2021-12-03 | 中国石油天然气股份有限公司 | Heating sleeve |
| CN114320231A (en) * | 2020-09-30 | 2022-04-12 | 中国石油天然气股份有限公司 | Method for preventing wax precipitation of production string of gas production well |
-
2015
- 2015-05-28 CN CN201520358379.3U patent/CN204827368U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761524A (en) * | 2016-11-17 | 2017-05-31 | 东营市金亿来石油机械有限公司 | A kind of electric heating thermal insulation anti-theft oil extracting wellhead |
| CN107387022A (en) * | 2017-09-11 | 2017-11-24 | 山东聊城金泰节能科技有限公司 | A kind of gas well Special electromagnetic circulation tubing and casing anti-block apparatus and its application |
| CN108119098A (en) * | 2017-11-15 | 2018-06-05 | 中国石油天然气集团公司 | Well-head wax removal device and method |
| CN108119098B (en) * | 2017-11-15 | 2020-07-10 | 中国石油天然气集团公司 | Wellhead paraffin removal device and method |
| CN113738287A (en) * | 2020-05-29 | 2021-12-03 | 中国石油天然气股份有限公司 | Heating sleeve |
| CN114320231A (en) * | 2020-09-30 | 2022-04-12 | 中国石油天然气股份有限公司 | Method for preventing wax precipitation of production string of gas production well |
| CN114320231B (en) * | 2020-09-30 | 2024-03-26 | 中国石油天然气股份有限公司 | Method for preventing wax deposition of production pipe column of gas production well |
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