CN103867191A - Anti-wear insulation pipe nipple for electromagnetic wave measurement while drilling - Google Patents
Anti-wear insulation pipe nipple for electromagnetic wave measurement while drilling Download PDFInfo
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- CN103867191A CN103867191A CN201410085350.2A CN201410085350A CN103867191A CN 103867191 A CN103867191 A CN 103867191A CN 201410085350 A CN201410085350 A CN 201410085350A CN 103867191 A CN103867191 A CN 103867191A
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- pipe nipple
- wear
- joint
- nipple body
- insulating
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Abstract
The invention relates to an anti-wear insulation pipe nipple for electromagnetic wave measurement while drilling. The structures of the anti-wear insulation pipe nipple are as follows: a pipe nipple body is taken as a center, and two ends of the pipe nipple body are symmetrically connected to a protection joint and an anti-wear joint through a screw thread in sequence; insulation tapes with the equal width and protection tapes with the equal width and height are uniformly distributed at the middle section of the outer surface of the pipe nipple body at intervals, flexible ceramic is sprayed on the lateral end face of a position, which is located at a junction with the screw thread, in the pipe nipple body, the inner surface of a through hole at the center and the surface of the screw thread; the insulation tapes take the flexible ceramic and glass steel cloth as insulation layers, hard alloy teeth are embedded in the surfaces of the protection tapes, and the outer diameter of the hard alloy teeth is greater than the outer diameter of the insulation tapes; the protection joint and the insulation tapes of the pipe nipple body have the same outer diameter; the outer diameter of the surface of the anti-wear joint is greater than that of the protection tapes, the anti-wear joint is a small spiral centralizer, and the outer diameter of the surface of the anti-wear joint is smaller than that of the surface of the regular spiral centralizer. According to the structure, direct collision or friction of the pipe nipple body and a well wall can be reduced, and the repair of the insulation layers is simpler. The anti-wear insulation pipe nipple for electromagnetic wave measurement while drilling has the advantages of long service life and capability of reducing well drilling cost.
Description
Technical field
The present invention relates to a kind of electromagnetic wave while-drilling and measure anti-wear insulating short section.
Background technology
Electromagnetic wave while-drilling measuring technique (EM-MWD) is a new drilling technology, have signaling rate high, do not need circulating fluid just can transmit the advantages such as the short and cost of data, Measuring Time is low.Insulating short section is an important component part in electromagnetic wave while-drilling measuring system, insulating short section is connected in drill string, its Main Function is that drill string is divided into nonconducting two sections mutually, mainly passes through earth-layer propagation thereby realize electromagnetic signal, is detected by ground receiving wastewater facility.
Comparatively successful aspect insulating short section development abroad, the insulating short section body of its development all adopts insulation materials, be applied in actual drilling operation at present, but buying expenses costliness.In recent years domestic, insulating short section has also been done to a lot of research, owing to being difficult to find a kind of insulation materials with steel machinery wood property energy, therefore study route substantially all concentrates on and on steel pipe nipple, plates a layer insulating at present, to realize insulating properties.But in actual drilling process, insulating short section easily rubs, collides with the borehole wall and the entrained landwaste of drilling fluid, causes insulating layer easily to wear and tear and come off, the reduction of insulating short section insulating properties, even insulating short section and drill string conducting, make measurement-while-drilling system cisco unity malfunction.
In addition, insulating short section carrying and assembling process in, often can with other hard objects frictional impact, cause insulating short section top layer insulation materials destroyed and come off, insulating short section loses effect of insulation.Once and insulating layer wearing and tearing in insulating short section top layer come off, the reparation of insulating layer is also very thorny, because directly plate a layer insulating in the region that comes off, new and old insulating layer can not merge completely, and new insulating layer will be easy to again come off.Unique method is that top layer insulating layer is all struck off, more again plates a layer insulating.But the adhesive power of insulation materials is very strong, need to remove is completely also a job of wasting time and energy.
Summary of the invention
The object of the invention is for solving above-mentioned technical barrier; and provide one can effectively protect pipe nipple insulating layer; simultaneously can make the repair of insulating short section surface insulation layer simpler, can Short extension the electromagnetic wave while-drilling in application life measure anti-wear insulating short section.
For achieving the above object, the technical solution used in the present invention is: provide a kind of electromagnetic wave while-drilling to measure anti-wear insulating short section, comprise the pipe nipple body, protection joint and the anti-wear joint that are provided with central through hole; Centered by described pipe nipple body, two ends are respectively by screw thread connection protection joint and anti-wear joint symmetrically; Described this external surface of pipe nipple is divided into equally spaced insulating tape equably by ring protection band, insulating tape spaced apart is the groove that two ends width is large, interlude width is little first processing, two ends groove, interlude groove are respectively the dark groove such as wide, surface at groove first evenly sprays flexible ceramic, uniform winding glass fiber reinforced plastic cloth again, forms one deck hard, wear-resistant insulating layer; Two ends thread surface in described pipe nipple body, be all coated with flexible ceramic with the inner surface of screw thread junction both sides end face and body central through hole; Described boundary belt studs with hard-metal insert at circumferential surface; Described protection joint external diameter equates with the insulating tape external diameter of pipe nipple body; Described anti-wear joint outer surface diameter is larger than the boundary belt external diameter of pipe nipple body, and anti-wear joint is compact spiral centralizer, and outer surface diameter is less than conventional spiral centering device.
Pipe nipple body length of the present invention is 450～800mm, and the both sides ring-type insulating tape width of pipe nipple body is 40～60mm, and the each ring-type insulating tape of interlude width is 15～30mm; The width of described each ring protection band is 5～15mm, and boundary belt external diameter is than the large 2～20mm of insulating tape external diameter; Described protection joint length is 150～300mm; Described anti-wear joint length is 150～300mm, and external diameter is than the large 20～40mm of boundary belt external diameter.
It is 0.2～2mm that insulating tape external surface of the present invention sprays flexible ceramic layer thickness, and glass fibre reinforced plastic insulating layer thickness is 1～10mm.
The flexible ceramic layer thickness spraying with the inner surface of both sides, screw thread junction end face, body central through hole in pipe nipple body of the present invention is 0.2～1mm, and two ends thread surface flexible ceramic layer thickness is 0.2～0.5mm.
All connection protection joints threadably of pipe nipple body of the present invention two ends; once pipe nipple body is i.e. no longer dismounting after being connected with protection joint, to prevent because the flexible ceramic insulating layer damage being repeatedly assemblied on the pipe nipple body screw thread causing in degree of tightness threaded process comes off.
Electromagnetic wave while-drilling of the present invention is measured anti-wear insulating short section and is compared with prior art had following beneficial effect:
1, pipe nipple body of the present invention is all connected threadably with two ends protection joint and anti-wear joint; this external surface of pipe nipple is made up of separately insulating tape and boundary belt; boundary belt external diameter is larger than insulating tape; and anti-wear joint surface diameter is large compared with pipe nipple main body protection band diameter; can reduce pipe nipple body directly and wall collisions or friction; play the effect on protection pipe nipple body insulating tape and boundary belt surface, can effectively extend insulating short section application life.The anti-wear joint that used is in addition selected the structure of compact spiral centralizer, because of outer surface diameter less than conventional spiral centering device, it does not play centralizing function, but can avoid the situation of being blocked at hole curvature larger part greatly due to the anti-wear joint diameter in insulating short section two ends.
2, anti-wear insulating short section of the present invention can reduce the damage that collision brings of knocking of suffering other hard objects in carrying and assembling process effectively.
3, anti-wear insulating short section of the present invention not only can play the effect of insulation; measure to realize electromagnetic wave while-drilling for be divided into not conducting up and down by whole drill string two sections; meanwhile, the design spaced apart of insulating tape and boundary belt makes the repair of insulating layer become simple.In the time that insulating tape is partially damaged, only impaired insulating tape insulating layer need be struck off, then spray flexible ceramic and fw frp cloth.
Brief description of the drawings
Fig. 1 is that electromagnetic wave while-drilling of the present invention is measured anti-wear insulating short section Split connection structure schematic diagram.
Fig. 2 is entity schematic diagram after anti-wear insulating short section integrated connection of the present invention.
Fig. 3 is the pipe nipple body construction schematic diagram in anti-wear insulating short section of the present invention.
Fig. 4 is the pipe nipple body cross-sectional view in anti-wear insulating short section of the present invention.
Fig. 5 is pipe nipple body a-quadrant part section enlarged diagram.
Fig. 6 is pipe nipple body B region part section enlarged diagram.
In above-mentioned figure: 1-pipe nipple body; 2-protects joint; The anti-wear joint of 3-; 4-insulating tape; 5-boundary belt; 6-hard-metal insert; 7-thread surface ceramic insulating layer; 8-and both sides, screw thread junction end face ceramic insulating layer; The inner surface ceramic insulating layer of 9-pipe nipple body central through hole; 10-insulating tape ceramic insulating layer; 11-insulating tape glass fibre reinforced plastic insulating layer.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail.
Embodiment 1: the invention provides a kind of electromagnetic wave while-drilling and measure anti-wear insulating short section, its structure as Fig. 1,2 and Fig. 3 as shown in, comprise the pipe nipple body 1, protection joint 2 and the anti-wear joint 3 that are provided with central through hole; Pipe nipple body, protection joint and anti-wear joint all adopt 45 steels to do, and anti-wear insulating short section is centered by pipe nipple body 1, and two ends are respectively by screw thread connection protection joint 2 and anti-wear joint 3 successively symmetrically.
Described pipe nipple body 1 length is 765mm, boundary belt 5 external diameter 175mm, insulating tape 4 external diameter 159mm, pipe nipple body internal diameter is 89mm, pipe nipple body 1 external surface is divided into the insulating tape 4 at interval equably by ring protection band 5, insulating tape 4 spaced apart is that the two ends width first processing is large, the groove that interlude width is little, two ends groove, interlude groove is respectively dark groove such as wide grade, depth of groove is all 17.5mm, two ends recess width 60mm, the groove 30mm of interlude, surface at groove first evenly sprays flexible ceramic, form one deck insulating tape ceramic insulating layer 10, uniform winding glass fiber reinforced plastic cloth again, form one deck insulating tape glass fibre reinforced plastic insulating layer 11, in pipe nipple body 1, all spray CeRam-Kote54 flexible ceramic with inner surface and the two ends thread surface of both sides, screw thread junction end face, body central through hole, form inner surface ceramic insulating layer 9 and thread surface ceramic insulating layer 7 with both sides, screw thread junction end face ceramic insulating layer 8, pipe nipple body central through hole, the width of described each ring protection band 5 is 15mm, and boundary belt circumferential surface studs with hard-metal insert 6.
Described protection joint 2 length are 300mm, and protection joint 2 external diameters equate for 159mm with insulating tape 4 external diameters in pipe nipple body 1; Described anti-wear joint 3 length are 300mm, and the spiral righting strip surface diameter of anti-wear joint 3 is 210mm, and spiral fluid passageway surface diameter is 159mm, and internal diameter is 89mm.
Referring to Fig. 4,5 and 6, described insulating tape external surface is using flexible ceramic and glass fiber reinforced plastic as insulating layer, the flexible ceramic layer thickness 2mm that sprays, glass fibre reinforced plastic insulating layer thickness 10mm.The flexible ceramic layer thickness 1mm spraying with the inner surface of both sides, screw thread junction end face, body central through hole in pipe nipple body, the flexible ceramic layer thickness 0.5mm of two ends thread surface spraying.
Embodiment 2: the invention provides a kind of electromagnetic wave while-drilling and measure anti-wear insulating short section, its structure is with embodiment 1, and different is the change in size of each parts.The present embodiment pipe nipple body 1 long 530mm; boundary belt 5 external diameter 103mm; insulating tape external diameter 89mm; depth of groove is 8.5mm; pipe nipple body internal diameter 69mm, two ends insulating tape width 50mm, the each ring-type insulating tape of interlude width 20mm; each ring protection bandwidth 10mm, flexible ceramic adopts CeRam-Kote2000.Insulating tape surface flexible ceramic insulation layer thickness is 1mm, and glass fibre reinforced plastic insulating layer thickness is 2mm; The flexible ceramic layer thickness spraying with the inner surface of both sides, screw thread junction end face, body central through hole in described pipe nipple body is 0.5mm, and two ends thread surface flexible ceramic layer thickness is 0.3mm.
The long 200mm of protection joint 2, external diameter 89mm; The long 200mm of anti-wear joint 3, spiral righting strip surface diameter is 130mm, and spiral fluid passageway surface diameter is 89mm, and internal diameter is 69mm.
Embodiment 3: the invention provides a kind of electromagnetic wave while-drilling and measure anti-wear insulating short section, the flexible ceramic of its structure and use is with embodiment 2, different just the present embodiment insulating short section body 1 long 465mm, boundary belt 5 external diameters are 81.6mm, insulating tape external diameter 73mm, depth of groove is 4mm, pipe nipple body internal diameter 53mm, two ends insulating tape width is 40mm, each ring-type intermediate insulation bandwidth 15mm, each ring protection bandwidth 5mm, insulating tape surface flexible ceramic insulation layer thickness is 0.2mm, glass fibre reinforced plastic insulating layer thickness is 1mm; Pipe nipple body thread surface flexible ceramic layer thickness is 0.2mm, and pipe nipple body internal surface, pipe nipple body end face, screw thread end face flexible ceramic layer thickness are 0.2mm.
The long 150mm of protection joint, external diameter 73mm; The long 150mm of anti-wear joint, spiral righting strip surface diameter 105mm, spiral fluid passageway surface diameter is 73mm, internal diameter 53mm.
From embodiment; the anti-wear insulating short section of the present invention is simple in structure; the external diameter of pipe nipple body insulating tape, boundary belt is all little compared with the spiral righting strip surface diameter of anti-wear joint, can effectively reduce the damage that collision brings of knocking of suffering other hard objects in carrying and assembling process.Because the protected band of pipe nipple body interlude is divided into many equally spaced insulating tapes, in the time that insulating tape is impaired, only impaired insulating tape insulating layer need be struck off, then spray flexible ceramic and fw frp cloth in addition, make repair easy.These two design features have all extended the anti-wear insulating short section of the present invention application life.Once i.e. no longer dismounting after simultaneously the present invention has also noted protecting joint to be connected with pipe nipple body in use procedure, so also takes precautions against and avoids owing to repeatedly assembling and degree of tightness screw thread causes occurring that insulating layer pushes to come off makes the situation of pipe nipple and drill string conducting.
Insulating short section of the present invention can be protected insulating layer effectively, measures for electromagnetic wave while-drilling, and long service life, can reduce the loss bringing because of insulating short section failure of insulation and reduce drilling cost.
Claims (4)
1. electromagnetic wave while-drilling is measured an anti-wear insulating short section, comprises the pipe nipple body, protection joint and the anti-wear joint that are provided with central through hole; It is characterized in that: centered by described pipe nipple body, two ends are respectively by screw thread connection protection joint and anti-wear joint symmetrically; Described this external surface of pipe nipple is divided into equally spaced insulating tape equably by ring protection band, insulating tape spaced apart is the groove that two ends width is large, interlude width is little first processing, two ends groove, interlude groove are respectively the dark groove such as wide, surface at groove first evenly sprays flexible ceramic, uniform winding glass fiber reinforced plastic cloth again, forms one deck hard, wear-resistant insulating layer; Two ends thread surface in described pipe nipple body, be all coated with flexible ceramic with the inner surface of screw thread junction both sides end face and body central through hole; Described boundary belt studs with hard-metal insert at circumferential surface; Described protection joint external diameter equates with the insulating tape external diameter of pipe nipple body; Described anti-wear joint outer surface diameter is larger than the boundary belt external diameter of pipe nipple body, and anti-wear joint is compact spiral centralizer, and outer surface diameter is less than conventional spiral centering device.
2. a kind of electromagnetic wave while-drilling according to claim 1 is measured anti-wear insulating short section, it is characterized in that: described pipe nipple body length is 450～800mm, the both sides ring-type insulating tape width of pipe nipple body is 40～60mm, and the each ring-type insulating tape of interlude width is 15～30mm; The width of described each ring protection band is 5～15mm, and boundary belt external diameter is than the large 2～20mm of insulating tape external diameter; Described protection joint length is 150～300mm, and described anti-wear joint length is 150～300mm, and external diameter is than the large 20～40mm of boundary belt external diameter.
3. a kind of electromagnetic wave while-drilling according to claim 1 is measured anti-wear insulating short section, it is characterized in that: it is 0.2～2mm that described insulating tape external surface sprays flexible ceramic layer thickness, and glass fibre reinforced plastic insulating layer thickness is 1～10mm.
4. a kind of electromagnetic wave while-drilling according to claim 1 is measured anti-wear insulating short section, it is characterized in that: the flexible ceramic layer thickness spraying with the inner surface of both sides, screw thread junction end face, body central through hole in described pipe nipple body is 0.2～1mm, and two ends thread surface flexible ceramic layer thickness is 0.2～0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410085350.2A CN103867191B (en) | 2014-03-10 | 2014-03-10 | The anti-wear insulating short section of a kind of electromagnetic measurement while drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410085350.2A CN103867191B (en) | 2014-03-10 | 2014-03-10 | The anti-wear insulating short section of a kind of electromagnetic measurement while drilling |
Publications (2)
| Publication Number | Publication Date |
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| CN103867191A true CN103867191A (en) | 2014-06-18 |
| CN103867191B CN103867191B (en) | 2016-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410085350.2A Expired - Fee Related CN103867191B (en) | 2014-03-10 | 2014-03-10 | The anti-wear insulating short section of a kind of electromagnetic measurement while drilling |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108756866A (en) * | 2018-05-08 | 2018-11-06 | 中国石油集团渤海钻探工程有限公司 | A kind of protective device of underground resistivity female thread |
| CN111173504A (en) * | 2019-12-31 | 2020-05-19 | 中国地质大学（武汉） | Adjacent well distance electromagnetic while drilling large-range detection system without interference on adjacent well operation |
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| CN202900059U (en) * | 2012-10-29 | 2013-04-24 | 中国石油化工股份有限公司 | Non-magnetic pressure bearing drilling rod |
| CN202946122U (en) * | 2012-12-20 | 2013-05-22 | 北京盛锐马科技有限公司 | Shock absorption system of petroleum drilling and logging device |
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2014
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Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2559772Y (en) * | 2002-05-16 | 2003-07-09 | 陈新林 | Down hole safety protection short joint of drill pipe transmission well-logging |
| CN2573648Y (en) * | 2002-09-24 | 2003-09-17 | 张希智 | Improved drilling tool centering device |
| RU2277636C1 (en) * | 2004-10-11 | 2006-06-10 | Закрытое акционерное общество Научно-производственное предприятие "Самарские Горизонты" | Telemetering system emitter having communication channel to transmit information along pipe string in the form of magnetic signal |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108756866A (en) * | 2018-05-08 | 2018-11-06 | 中国石油集团渤海钻探工程有限公司 | A kind of protective device of underground resistivity female thread |
| CN111173504A (en) * | 2019-12-31 | 2020-05-19 | 中国地质大学（武汉） | Adjacent well distance electromagnetic while drilling large-range detection system without interference on adjacent well operation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103867191B (en) | 2016-03-30 |
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