CN104989289A - Sealing and heat insulating device for wrapped insulated tubing and manufacturing method thereof - Google Patents
Sealing and heat insulating device for wrapped insulated tubing and manufacturing method thereof Download PDFInfo
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- CN104989289A CN104989289A CN201510419632.6A CN201510419632A CN104989289A CN 104989289 A CN104989289 A CN 104989289A CN 201510419632 A CN201510419632 A CN 201510419632A CN 104989289 A CN104989289 A CN 104989289A
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- thermal insulation
- insulation protection
- protection pipe
- pipe box
- tubing
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Abstract
The invention relates to a sealing and heat insulating device for a wrapped insulated tubing and a manufacturing method thereof. Sealing hoops are installed at the two ends of an anti-corrosion protecting layer located on the middle section of the tubing, in other words, the tubing is sleeved with buna-N silicon seals. The anti-corrosion protecting layer is arranged outside the buna-N silicon seals in an extending and wrapping mode, and stainless steel rings are arranged to achieve binding and forceful sealing between the anti-corrosion protecting layer and the buna-N silicon seals and the tubing. Multiple stainless steel hooping pipe clamps are arranged on the upper portion, the middle portion and the lower portion of the outer wall of a semicircular insulated protecting pipe sleeve, and a longitudinal sealing bar is arranged at the position of a butt joint of the semicircular insulated protecting pipe sleeve. The semicircular insulated protecting pipe sleeve is of a structure that buna-N materials are arranged on the periphery and aerogel insulation felt is clamped in the middle. No oil-gas-water substance can enter the space between the insulation layer and the tubing and the space between the insulation layer and the protecting layer, so that the heat insulation effect of the whole wrapped insulated tubing is better and oil exploitation cost is reduced greatly.
Description
Technical field
The present invention relates to a kind of the outer of oil extraction in oil field tubing string that be applicable to and wrap up in insulated tubing, relate to a kind of outer insulated tubing of wrapping up in more specifically and seal heat-proof device and preparation method thereof.
Background technology
In the actual production process of oil field, pure light pipe (not adding any heat-insulation and heat-preservation measure) flow string is generally adopted to produce at present, there is the crude oil own temperature problem of losing in a large number in the wellbore in this oil production method, make the crude oil fluidity in pit shaft poor, when being incubated bad crude oil temperature in pit shaft and being lower, easy wax deposition in oil pipe, when wax deposition is serious, crude oil blocks in oil pipe, cannot recover the oil, therefore need regularly to use the de-plugging of hot water well-flushing.And add oil pumper load, the heat energy of waste electric energy and surface gathering system heating furnace.
Wrapping up in insulated tubing is outward one of effective technology overcome the above problems.Outer wrap up in insulated tubing patent according to published and learn; wrap up in the problem that the existing hermetically-sealed construction of insulated tubing also exists hydrocarbon seepage outward; thus when after hydrocarbon seepage; exist heat insulation bad; heat insulation effect declines; in addition semicircle thermal insulation protection pipe box material therefor and structure undesirable, have impact on effect of heat insulation.Therefore be necessary to improve oil pipe end sealing and the outer collet heat insulation structural of box cupling, can further improve heat insulation and preservation effect by the improvement externally wrapping up in insulated tubing end part seal and the outer collet structure of box cupling, the heat insulation and preservation effect wrapping up in insulated tubing outside making is better.
Summary of the invention
The object of this invention is to provide a kind of outer insulated tubing of wrapping up in and seal heat-proof device and preparation method thereof, wrap up in the sealing of insulated tubing outside making, heat insulation, heat insulation effect is better, more effectively can reduce crude oil and flow to the temperature loss of well head process Crude Oil self from shaft bottom and the fluidised form improved crude oil pit shaft and paraffin blockage well-flushing problem, reduce oil extraction cost.
The technical solution used in the present invention is as follows:
A kind of outer insulated tubing of wrapping up in seals heat-proof device, the two ends of described oil pipe (1) are for being processed with externally threaded thread segment (A), part near two ends thread segment is two lever pieces (B), and the described tubing section between two lever pieces is interlude (C); At described oil pipe (1) interlude (C), described oil pipe (1) outer wall application one deck isolation layer (2), and outside the outer wall of described isolation layer (2), wrap up in one deck isolation layer protection steel band (3), wrap up one deck corrosion protective covering (4) equably in described steel band (3) outside; At connection box cupling (7) and lever piece (B) place of described oil pipe (1), its periphery is fixed with the semicircle thermal insulation protection pipe box (11) of two prefabricated in advance docking;
At the two ends of the described corrosion protective covering of oil pipe interlude (C), sealing hoop is installed, described sealing hoop structure is: at the upper fine O-ring seal of overcoat fourth (6) of described oil pipe (1), described corrosion protective covering (4) extension is also outer is rolled in the fine O-ring seal of described fourth (6) outside, and with stainless steel steel ring (5) by described corrosion protective covering (4), banding forced seal between the fine O-ring seal of fourth (6) and oil pipe (1);
Multiple stainless steel banding pipe clamp (10-1) is provided with in the position, upper, middle and lower of described semicircle thermal insulation protection pipe box (11) outer wall; and at described semicircle thermal insulation protection pipe box (11) butt joint place, longitudinal sealing strip (12) is set, the semicircle thermal insulation protection pipe box (11) described in described banding pipe clamp (10-1) banding and make the described weather strip (12) at butt joint place embed described in semicircle thermal insulation protection pipe box (11) in the vertical slot (12-1) at butt joint place.
Semicircle thermal insulation protection pipe box (11) the employing surrounding of two described docking is project organizations of the fine material of fourth (8) therebetween aerogel heat-proof felt (9).
In the middle part of the contact surface of the semicircle thermal insulation protection pipe box (11) described in two docking, corresponding position devises the vertical slot (12-1) of filling weather strip (12); described vertical slot (12-1) two ends being extended to described semicircle thermal insulation protection pipe box (5) setting up and down, described weather strip (12) is in the vertical slot (12-1) described in the embedding of long band type.
A kind of outer preparation method wrapping up in insulated tubing sealing heat-proof device of the present invention is as follows:
The processing technology of the sealing hoop described in installing at the two ends of the described corrosion protective covering of oil pipe interlude (C):
When wrapping up in insulated tubing outside processing; only corrosion protective covering (4) two ends are extended to isolation layer (2) and protect steel band (3) outer 30mm with isolation layer; to be enclosed between extended corrosion protective covering (4) and oil pipe (1) outside fine for fourth O-ring seal (6); again stainless steel steel ring (5) is sleeved on the extension 30mm place of corrosion protective covering (4); after finally stainless steel steel ring (5) being carried out enforce compression with hydraulic forced water-tight equipment, be pressed on the outside of corrosion protective covering (4).
Described semicircle thermal insulation protection pipe box (11) processing technology:
When processing semicircle thermal insulation protection pipe box (11), the fine material of outer fourth in advance by well cutting is put down the orlop applied at semicircle thermal insulation protection pipe box master tooling, to apply flat for the aerogel heat-proof felt (9) of well cutting in advance on the fine material of outer fourth and to be fixed again, the surrounding physical dimension of aerogel heat-proof felt is less than fourth fine material surrounding physical dimension and is positioned at the fine edge of materials of fourth with inner, apply on aerogel heat-proof felt by flat for the fine material of internal layer fourth of well cutting in advance again, finally by 2 mould male models of prefabricated semicircle protection pipe box (11), master mold is buckled and is fixed, processing is completed by heating shaping, the demoulding, process for cooling,
The processing technology of multiple stainless steel banding pipe clamp (10-1) is provided with in the position, upper, middle and lower of described semicircle thermal insulation protection pipe box (11) outer wall:
In the vertical slot (12-1) at semicircle thermal insulation protection pipe box (11) the butt joint place described in described longitudinal sealing strip (12) is first inserted; by described semicircle thermal insulation protection pipe box (11) docking, banding pipe clamp (10-1) described on its outside hoop.
Be external diameter ￠ 87mm at the described outer insulated tubing interlude two ends end part seal fine O-ring seal of fourth (6) used of wrapping up in, internal diameter ￠ 74mm, wide 30mm, stainless steel steel ring (5) used is external diameter ￠ 98mm, internal diameter ￠ 92mm, width 30mm.Pressure press seal is carried out with dedicated hydraulic equipment.
At described outer two the lever piece places wrapping up in the upper 400mm and lower 350mm of the connection coupling (7) at described oil pipe (1) of the oil pipe (1) of insulated tubing; the semicircle thermal insulation protection pipe box (11) of two docking is set; semicircle thermal insulation protection pipe box (11) the employing surrounding of two docking is project organizations of the fine material of fourth (8) therebetween aerogel heat-proof felt (9); by mold injection molding, its thickness is 7.5 ~ 10mm.
Advantage of the present invention is:
By described outer wrap up in insulated tubing interlude the fine O-ring seal of two ends fourth (6) and stainless steel steel ring (5) externally wrap up between insulated tubing corrosion protective covering (4) oil pipe (1) and carry out forced seal; and pass through two semicircle sealings of thermal insulation protection pipe box and the improvement of heat insulation structural of externally wrapping up in the former box cupling of insulated tubing and the installation of lever piece place; ensure not enter any oil gas water substance between isolation layer (2) and oil pipe (1) and topping (4), avoid affecting its effect of heat insulation.Make the whole outer heat insulation and preservation effect wrapping up in insulated tubing better, more effectively reduce crude oil flows to well head process Crude Oil own temperature loss from shaft bottom, in-site installation more convenient and quicker, reduces cost of oil production greatly.
Accompanying drawing explanation
Fig. 1 is the structural representation that insulated tubing interlude matcoveredn is wrapped up in prior art China and foreign countries.
Fig. 2 be Fig. 1 along A-A direction sectional view.
Fig. 3 is the structure enlarged diagram of local I part after the present invention improves of Fig. 1
Fig. 4 be Fig. 3 along B-B direction sectional view.
Detailed description of the invention
Details are as follows, shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4 for a kind of outer structure wrapping up in insulated tubing sealing heat-proof device of the present invention:
A kind of outer insulated tubing of wrapping up in seals heat-proof device, and the two ends of described oil pipe 1 are for being processed with externally threaded thread segment A, and the part near two ends thread segment is two lever piece B, and the described tubing section between two lever pieces is interlude C; At described oil pipe 1 interlude C, described oil pipe 1 outer wall application one deck isolation layer 2, and outside the outer wall of described isolation layer 2, wrap up in one deck isolation layer protection steel band 3, wrap up one deck corrosion protective covering 4 equably in described steel band 3 outside; At connection box cupling 7 and the lever piece B place of described oil pipe 1, its periphery is fixed with the semicircle thermal insulation protection pipe box 11 of two prefabricated in advance docking;
At the two ends of the described corrosion protective covering of oil pipe interlude C, sealing hoop is installed, described sealing hoop structure is: the fine O-ring seal 6 of overcoat fourth on described oil pipe 1, described corrosion protective covering 4 extension is also outer is rolled in fine O-ring seal 6 outside of described fourth, and with stainless steel steel ring 5 by described corrosion protective covering 4, banding forced seal between the fine O-ring seal 6 of fourth and oil pipe 1;
Multiple stainless steel banding pipe clamp 10-1 is provided with in the position, upper, middle and lower of described semicircle thermal insulation protection pipe box 11 outer wall; and longitudinal sealing strip 12 is set at described semicircle thermal insulation protection pipe box 11 butt joint place, the semicircle thermal insulation protection pipe box (11) described in described banding pipe clamp 10-1 banding also makes the described weather strip 12 at butt joint place embed described semicircle thermal insulation protection pipe box 11 in the vertical slot 12-1 at butt joint place.
The semicircle thermal insulation protection pipe box 11 of described two docking adopts surrounding to be the project organization of fourth fine material 8 therebetween aerogel heat-proof felt 9.
In the middle part of the contact surface of the semicircle thermal insulation protection pipe box 11 described in two docking, corresponding position devises the vertical slot 12-1 of filling weather strip 12; the described vertical slot 12-1 two ends being extended to described semicircle thermal insulation protection pipe box 5 setting up and down, described weather strip 12 is in the vertical slot 12-1 described in the embedding of long band type.Described weather strip 12 adopts foaming nitrile rubber to be made.The contact surface gap of semicircle thermal insulation protection pipe box 11 described in two dock by described weather strip thoroughly seals, described multiple stainless steel banding pipe clamp 10-1 by described semicircle thermal insulation protection pipe box 11 at circumferential sealed banding.
A kind of outer preparation method wrapping up in insulated tubing sealing heat-proof device of the present invention is as follows:
The processing technology of the sealing hoop described in installing at the two ends of the described topping of oil pipe interlude C:
When wrapping up in insulated tubing outside processing; only corrosion protective covering 4 two ends are extended to isolation layer 2 and protect the outer 30mm of steel band 3 with isolation layer; to be enclosed between extended corrosion protective covering 4 and oil pipe 1 outside fine for fourth O-ring seal 6; again stainless steel steel ring 5 is sleeved on the extension 30mm place of corrosion protective covering 4; after finally stainless steel steel ring 5 being carried out enforce compression with hydraulic forced water-tight equipment, be pressed on the outside of corrosion protective covering 4.
Described semicircle thermal insulation protection pipe box 11 processing technology:
When processing semicircle thermal insulation protection pipe box 11, the fine material of outer fourth in advance by well cutting is put down the orlop applied at semicircle thermal insulation protection pipe box master tooling, to apply flat for the aerogel heat-proof felt 9 of well cutting in advance on the fine material of outer fourth and to be fixed again, the surrounding physical dimension of aerogel heat-proof felt is less than fourth fine material surrounding physical dimension and is positioned at the fine edge of materials of fourth with inner, apply on aerogel heat-proof felt by flat for the fine material of internal layer fourth of well cutting in advance again, finally 2 mould male models of prefabricated semicircle protection pipe box 11, master mold are buckled and fixed; Processing is completed by heating shaping, the demoulding, process for cooling;
The processing technology of multiple stainless steel banding pipe clamp 10-1 is provided with in the position, upper, middle and lower of described semicircle thermal insulation protection pipe box 11 outer wall:
In the vertical slot 12-1 at the semicircle thermal insulation protection pipe box 11 butt joint place described in described longitudinal sealing strip 12 is first inserted, described semicircle thermal insulation protection pipe box 11 is docked, banding pipe clamp 10-1 described on its outside hoop.
Wrap up in insulated tubing outside and add man-hour; at the two ends (position in detail as shown in Figure 3) of oil pipe interlude; externally wrap up between insulated tubing anticorrosive heat insulating topping 4 oil pipe 1 with the fine O-ring seal 6 of fourth and stainless steel steel ring 5 and carry out forced seal; ensure not enter any oil gas water substance, in order to avoid affect its effect of heat insulation between isolation layer 2 and oil pipe 1 and topping 4.
When wrapping up in insulated tubing outside installing at the scene; at connection box cupling 7 and the lever piece place of oil pipe 1; the semicircle thermal insulation protection pipe box 11 of prefabricated in advance two docking is arranged on box cupling and lever piece place; be used in semicircle thermal insulation protection to overlap 11 upper, middle and lowers and be provided with 5 stainless steels and tighten pipe clamp 10-1 and two and be arranged on the weather strip 12 that semicircle thermal insulation protection puts seam crossing, two docking semicircle thermal insulation protections covers 11 fix and are sealed in connection box cupling 7 and lever piece place.
Wrapping up in the fine O-ring seal 6 of insulated tubing interlude two ends end part seal fourth used is outside external diameter ￠ 87mm, internal diameter ￠ 74mm, wide 30mm, and stainless steel steel ring 5 used is external diameter ￠ 98mm, internal diameter ￠ 92mm, width 30mm.Pressure press seal is carried out with dedicated hydraulic equipment.
To 400mm and two lever piece places down to 350mm on the connection coupling 7 of described oil pipe 1; the semicircle thermal insulation protection pipe box 11 of two docking is set; the semicircle thermal insulation protection pipe box 11 of two docking adopts surrounding to be the project organization of fourth fine material 8 therebetween aerogel heat-proof felt 9; by mold injection molding, its thickness is 7.5 ~ 10mm.
Described isolation layer and described aerogel heat-proof felt 9 all adopt aeroge nano super felt insulation heat-insulating heat-preserving material feature be high temperature resistant, water resistance good.The thermal loss that heat-insulation and heat-preservation suppression efficiency is high, can suppress high temp objects, effectively suppresses the loss of heat radiation and heat conduction.The product of these nano High Seience Technology Co., Ltd. of materials'use ShaoXing,ZheJiang city production and sales.The material of corrosion protective covering is thermoplastic high density's composite polyethylene material, and described thermoplastic high density's composite polyethylene material selects in Beijing the sell goods adding sky and development in science and technology Co., Ltd
The fine raw material of described oil pipe, stainless steel coil, fourth, the fine O-ring seal of fourth, stainless steel banding pipe clamp are for oneself has technical products.Stainless steel banding pipe clamp can select conventional pipe clamp structure.
The present invention is improved by the form of structure of two the semicircle thermal insulation protection pipe boxes externally wrapping up in the former box cupling of insulated tubing and the installation of lever piece place; and increase outer wrap up in insulated tubing interlude two ends end part seal after; make the whole outer heat insulation and preservation effect wrapping up in insulated tubing better; more effectively reduce crude oil flows to well head process Crude Oil own temperature loss from shaft bottom; in-site installation more convenient and quicker, reduces cost of oil production greatly.
Claims (4)
1. wrap up in insulated tubing sealing heat-proof device outward for one kind, the two ends of described oil pipe (1) are for being processed with externally threaded thread segment (A), part near two ends thread segment is two lever pieces (B), and the described tubing section between two lever pieces is interlude (C); At described oil pipe (1) interlude (C), described oil pipe (1) outer wall application one deck isolation layer (2), and outside the outer wall of described isolation layer (2), wrap up in one deck isolation layer protection steel band (3), wrap up one deck corrosion protective covering (4) equably in described steel band (3) outside; At connection box cupling (7) and lever piece (B) place of described oil pipe (1), its periphery is fixed with the semicircle thermal insulation protection pipe box (11) of two prefabricated in advance docking; It is characterized in that,
At the two ends of the described corrosion protective covering of oil pipe interlude (C), sealing hoop is installed, described sealing hoop structure is: at the upper fine O-ring seal of overcoat fourth (6) of described oil pipe (1), described corrosion protective covering (4) extension is also outer is rolled in the fine O-ring seal of described fourth (6) outside, and with stainless steel steel ring (5) by described corrosion protective covering (4), banding forced seal between the fine O-ring seal of fourth (6) and oil pipe (1);
Multiple stainless steel banding pipe clamp (10-1) is provided with in the position, upper, middle and lower of described semicircle thermal insulation protection pipe box (11) outer wall; and at described semicircle thermal insulation protection pipe box (11) butt joint place, longitudinal sealing strip (12) is set, the semicircle thermal insulation protection pipe box (11) described in described banding pipe clamp (10-1) banding and make the described weather strip (12) at butt joint place embed described in semicircle thermal insulation protection pipe box (11) in the vertical slot (12-1) at butt joint place.
2. a kind of outer insulated tubing of wrapping up in as claimed in claim 1 seals heat-proof device; it is characterized in that, semicircle thermal insulation protection pipe box (11) the employing surrounding of two described docking is project organizations of the fine material of fourth (8) therebetween aerogel heat-proof felt (9).
3. a kind of outer insulated tubing of wrapping up in as claimed in claim 1 seals heat-proof device, it is characterized in that, in the middle part of the contact surface of the semicircle thermal insulation protection pipe box (11) described in two docking, corresponding position devises the vertical slot (12-1) of filling weather strip (12), described vertical slot (12-1) two ends being extended to described semicircle thermal insulation protection pipe box (5) setting up and down; Described weather strip (12) is in the vertical slot (12-1) described in the embedding of long band type.
4. a kind of outer preparation method wrapping up in insulated tubing sealing heat-proof device of any one described in claim 1-3, is characterized in that:
The processing technology of the sealing hoop described in installing at the two ends of the described corrosion protective covering of oil pipe interlude (C):
When wrapping up in insulated tubing outside processing; only corrosion protective covering (4) two ends are extended to isolation layer (2) and protect steel band (3) outer 30mm with isolation layer; to be enclosed between extended corrosion protective covering (4) and oil pipe (1) outside fine for fourth O-ring seal (6); again stainless steel steel ring (5) is sleeved on the extension 30mm place of corrosion protective covering (4); after finally stainless steel steel ring (5) being carried out enforce compression with hydraulic forced water-tight equipment, be pressed on the outside of corrosion protective covering (4).
Described semicircle thermal insulation protection pipe box (11) processing technology:
When processing semicircle thermal insulation protection pipe box (11), the fine material of outer fourth in advance by well cutting is put down the orlop applied at semicircle thermal insulation protection pipe box master tooling, to apply flat for the aerogel heat-proof felt (9) of well cutting in advance on the fine material of outer fourth and to be fixed again, the surrounding physical dimension of aerogel heat-proof felt is less than fourth fine material surrounding physical dimension and is positioned at the fine edge of materials of fourth with inner, apply on aerogel heat-proof felt by flat for the fine material of internal layer fourth of well cutting in advance again, finally by 2 mould male models of prefabricated semicircle protection pipe box (11), master mold is buckled and is fixed, processing is completed by heating shaping, the demoulding, process for cooling,
The processing technology of multiple stainless steel banding pipe clamp (10-1) is provided with in the position, upper, middle and lower of described semicircle thermal insulation protection pipe box (11) outer wall:
In the vertical slot (12-1) at semicircle thermal insulation protection pipe box (11) the butt joint place described in described longitudinal sealing strip (12) is first inserted; by described semicircle thermal insulation protection pipe box (11) docking, banding pipe clamp (10-1) described on its outside hoop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510419632.6A CN104989289A (en) | 2015-07-16 | 2015-07-16 | Sealing and heat insulating device for wrapped insulated tubing and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510419632.6A CN104989289A (en) | 2015-07-16 | 2015-07-16 | Sealing and heat insulating device for wrapped insulated tubing and manufacturing method thereof |
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| CN104989289A true CN104989289A (en) | 2015-10-21 |
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| CN201510419632.6A Pending CN104989289A (en) | 2015-07-16 | 2015-07-16 | Sealing and heat insulating device for wrapped insulated tubing and manufacturing method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106907114A (en) * | 2017-05-08 | 2017-06-30 | 刘兴仁 | Nano heat-insulating thermal insulation tubing is wrapped up in outside a kind of |
| CN107165585A (en) * | 2017-06-30 | 2017-09-15 | 刘兴仁 | A kind of inner liner abrasive resistant, heat-insulation and heat-preservation composite oil pipe |
| CN108716385A (en) * | 2018-05-29 | 2018-10-30 | 中国石油天然气股份有限公司 | Method and device for determining running depth of heat insulation oil pipe and storage medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4660863A (en) * | 1985-07-24 | 1987-04-28 | A-Z International Tool Company | Casing patch seal |
| CN201090201Y (en) * | 2007-09-24 | 2008-07-23 | 辽河石油勘探局 | Antisepsis fire resistant heat insulation pipe |
| CN201412078Y (en) * | 2009-05-27 | 2010-02-24 | 曹春富 | Novel heat-insulated pipe heat-insulated pipe nipple |
| CN104100209A (en) * | 2014-04-03 | 2014-10-15 | 刘兴仁 | Heat-insulation layer coated tubing |
| CN104481484A (en) * | 2014-12-26 | 2015-04-01 | 东营市福利德石油科技开发有限责任公司 | Horizontal well segmented intermittent steam huff and puff injection-production integrated pipe column |
| CN204782814U (en) * | 2015-07-16 | 2015-11-18 | 刘兴仁 | Wrap up in sealed heat -proof device of heat insulation oil pipe outward |
-
2015
- 2015-07-16 CN CN201510419632.6A patent/CN104989289A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4660863A (en) * | 1985-07-24 | 1987-04-28 | A-Z International Tool Company | Casing patch seal |
| CN201090201Y (en) * | 2007-09-24 | 2008-07-23 | 辽河石油勘探局 | Antisepsis fire resistant heat insulation pipe |
| CN201412078Y (en) * | 2009-05-27 | 2010-02-24 | 曹春富 | Novel heat-insulated pipe heat-insulated pipe nipple |
| CN104100209A (en) * | 2014-04-03 | 2014-10-15 | 刘兴仁 | Heat-insulation layer coated tubing |
| CN104533306A (en) * | 2014-04-03 | 2015-04-22 | 刘兴仁 | Outside-wrapped heat insulation oil pipe |
| CN104481484A (en) * | 2014-12-26 | 2015-04-01 | 东营市福利德石油科技开发有限责任公司 | Horizontal well segmented intermittent steam huff and puff injection-production integrated pipe column |
| CN204782814U (en) * | 2015-07-16 | 2015-11-18 | 刘兴仁 | Wrap up in sealed heat -proof device of heat insulation oil pipe outward |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106907114A (en) * | 2017-05-08 | 2017-06-30 | 刘兴仁 | Nano heat-insulating thermal insulation tubing is wrapped up in outside a kind of |
| CN106907114B (en) * | 2017-05-08 | 2023-05-02 | 刘兴仁 | Externally wrapped nano heat-insulating oil pipe |
| CN107165585A (en) * | 2017-06-30 | 2017-09-15 | 刘兴仁 | A kind of inner liner abrasive resistant, heat-insulation and heat-preservation composite oil pipe |
| CN107165585B (en) * | 2017-06-30 | 2023-05-02 | 刘兴仁 | Wear-resistant, heat-insulating and heat-preserving composite oil pipe with lining |
| CN108716385A (en) * | 2018-05-29 | 2018-10-30 | 中国石油天然气股份有限公司 | Method and device for determining running depth of heat insulation oil pipe and storage medium |
| CN108716385B (en) * | 2018-05-29 | 2021-07-02 | 中国石油天然气股份有限公司 | Method and device for determining running depth of heat insulation oil pipe and storage medium |
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