CN104453883A - Electrode system structure for lateral resistivity logging while drilling instrument and method for manufacturing electrode system structure - Google Patents
Electrode system structure for lateral resistivity logging while drilling instrument and method for manufacturing electrode system structure Download PDFInfo
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- CN104453883A CN104453883A CN201410759458.5A CN201410759458A CN104453883A CN 104453883 A CN104453883 A CN 104453883A CN 201410759458 A CN201410759458 A CN 201410759458A CN 104453883 A CN104453883 A CN 104453883A
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000005553 drilling Methods 0.000 title abstract description 12
- 238000004519 manufacturing process Methods 0.000 title abstract description 5
- 238000009413 insulation Methods 0.000 claims abstract description 43
- 239000000919 ceramic Substances 0.000 claims abstract description 30
- 238000000576 coating method Methods 0.000 claims abstract description 23
- 229920002430 Fibre-reinforced plastic Polymers 0.000 claims abstract description 14
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 27
- 239000003365 glass fiber Substances 0.000 claims description 13
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 12
- 239000011152 fibreglass Substances 0.000 claims description 11
- 238000004804 winding Methods 0.000 claims description 10
- 238000002360 preparation method Methods 0.000 claims description 7
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- 230000001070 adhesive effect Effects 0.000 claims description 6
- 239000003822 epoxy resin Substances 0.000 claims description 6
- 229920000647 polyepoxide Polymers 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 229910000679 solder Inorganic materials 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims 1
- 238000003466 welding Methods 0.000 abstract description 5
- 239000011248 coating agent Substances 0.000 abstract description 3
- -1 polytetrafluoroethylene Polymers 0.000 abstract 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 abstract 2
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract 2
- 239000011151 fibre-reinforced plastic Substances 0.000 abstract 1
- 229920005989 resin Polymers 0.000 description 7
- 239000011347 resin Substances 0.000 description 7
- 230000007797 corrosion Effects 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
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- 238000005516 engineering process Methods 0.000 description 3
- 238000007654 immersion Methods 0.000 description 3
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- 239000007924 injection Substances 0.000 description 3
- 238000001721 transfer moulding Methods 0.000 description 3
- 230000032798 delamination Effects 0.000 description 2
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/16—Drill collars
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
- E21B47/017—Protecting measuring instruments
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- Engineering & Computer Science (AREA)
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- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
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Abstract
The invention discloses an electrode system structure for a lateral resistivity logging while drilling instrument and a method for manufacturing the electrode system structure. The electrode system structure for the lateral resistivity logging while drilling instrument comprises a drill collar body, first and second insulation layers and electrode rings, and the first and second insulation layers and the electrode rings are radially arranged on the surface of the drill collar body sequentially from the inside to the outside; the first insulation layer is a ceramic insulation layer or a rubber insulation layer, and the second insulation layer is a fiber reinforced plastic insulation layer; if the first insulation layer is the ceramic insulation layer, a polytetrafluoroethylene coating is arranged between the first and second insulation layers. The method includes: sequentially forming the first insulation layer, the polytetrafluoroethylene coating and the second insulation layer on the surface of the drill collar radially and sequentially; or forming the first insulation layer and the second insulation layer; fastening an upper electrode ring and a lower electrode ring onto the second insulation layer, and using pins for fixation; welding nuggets at weld joints reserved on the upper electrode ring and the lower electrode ring so as to obtain the electrode system structure for the lateral resistivity logging while drilling instrument. The electrode system structure meets the requirements on stability and reliability in long-time operation of electrode systems in an oil-gas drilling environment.
Description
Technical field
The invention belongs to Oil/gas Well well logging field, be specifically related to brill side direction resistivity logging tool electrode system structure and preparation method thereof.
Background technology
A kind of connector for logging while drilling realizing and apply the earliest with brill side direction resistivity logging tool, compare with induction resistivity tool while logging device with boring electromagnetic wave, its resistivity measurement scope is larger, and has the advantage that cannot be equal in the well logging of middle and high resistance stratum.This quasi-instrument mainly contains two kinds of focus methods, and one is circuit directly to drill collar for current focusing, and another kind is by producing induced-current focus on to coil power supply on drill collar.A kind of front method proposes and applies the earliest, and investigation depth is large, and focusing power is strong, but limits to by technical level, fails maturation and extensive use so far; A kind of rear method proposes and applies more late, and investigation depth is more shallow, and focusing power is more weak, but electrode system easily realizes, at present ripe also extensive use.A kind of front method is failed main cause that is ripe and business application and is: the insulation between electrode apparatus, between electrode and drill collar and electrode system insulating tape thereof wear-resisting cannot meet for a long time, the needs of high temperature, high pressure drilling environment.
Connector for logging while drilling washes away by mud when working in shaft bottom, Drilling vibration, high temperature, high pressure etc. affect, working environment is very severe, and with brill side direction resistivity tool electrode system for a long time in underground work, its insulating properties are easy to reduce, be subject to mud washes away and easily cause electrode retaining collar to damage and the shaft bottom that comes off.The electrode retaining collar shaft bottom that comes off need be salvaged, and cannot salvage, need to carry out well filling, can bring about great losses.In the past, circuit directly to electrode power supply stream focus on brill direction finding resistivity tool electrode system, due to the reason such as project organization and manufacture craft, its insulating properties, flushing resistance are poor.Often occur that insulation values is reduced to very soon after going into the well very little, insulating layer is subject to washing away the phenomenons such as serious, causing the damage with boring side direction resistivity logging tool electrode system, being difficult to meet well logging during needs.Therefore being badly in need of novel electrode system structure and preparation method, effectively solving HTHP insulating properties low, easily washing away and the problem such as high temperature high voltage resistant, to improve stability, the reliability with boring side direction resistivity logging tool.
Summary of the invention
The object of the present invention is to provide with brill side direction resistivity logging tool electrode system structure and preparation method thereof, this electrode system structure can improve the insulation of electrode system, resistance to erosion, antivibration and high temperature high voltage resistant performance, meets the needs of electrode system long-time stable, reliably working in oil/gas drilling environment.
In order to achieve the above object, the present invention is with brill side direction resistivity logging tool electrode system structure, comprise drill collar body, first and second insulating layer and electrode retaining collar, first and second insulating layer and electrode retaining collar are located at the surface of drill collar body from inside to outside successively along drill collar body radial direction; The first described insulating layer is ceramic insulating layer or rubber insulation, and the second insulating layer is glass fibre reinforced plastic insulating layer; When the first insulating layer is ceramic insulating layer, between first and second insulating layer, be also provided with the polytetrafluorethylecoatings coatings for eliminating the first insulating layer gap.
Described electrode retaining collar comprises on the electrode retaining collar that snaps together and under electrode retaining collar.
Described pin is fixed together on electrode retaining collar He under electrode retaining collar by interference fit.
Be equipped with pinhole on described electrode retaining collar He under electrode retaining collar, pin pierces on pinhole and electrode retaining collar and interference fit under electrode retaining collar; Fastening place on electrode retaining collar and under electrode retaining collar is reserved with weld seam, and commissure point is welded with solder joint.
The mounting groove being convenient to install pin is all milled with on described electrode retaining collar and under electrode retaining collar.
The material that described rubber insulation adopts is fluorubber, and the material that ceramic insulating layer adopts is aluminium oxide ceramics, and the material that glass fibre reinforced plastic insulating layer adopts is epoxy resin, the material selection TC11 magnetism-free stainless steel of electrode retaining collar.
The inwall of described electrode retaining collar scribbles adhesive.
When the first insulating layer is ceramic insulating layer, the thickness of the first insulating layer is 0.2mm-0.4mm; The thickness of polytetrafluorethylecoatings coatings is 0.5mm; When the first insulating layer is rubber insulation, the thickness of the first insulating layer is 2-3mm.
The described preparation method with brill side direction resistivity logging tool electrode system structure, when the first insulating layer is ceramic insulating layer, comprises the following steps:
1) mode of spraying is adopted to form the first insulating layer at the drill collar body surface of having polished, then adopt hot-spraying technique to form polytetrafluorethylecoatings coatings on the surface of the first insulating layer, then adopt glass reinforced plastic winding technique to be wound around the second insulating layer on polytetrafluorethylecoatings coatings surface;
2) install on the surface of the second insulating layer on the electrode retaining collar being equipped with pinhole and under electrode retaining collar, and make to snap together on electrode retaining collar He under electrode retaining collar, pinhole on electrode retaining collar and under electrode retaining collar is positioned at straight line, fastening place allowance weld on electrode retaining collar and under electrode retaining collar, all mounting groove is milled out on electrode retaining collar He under electrode retaining collar, then pin is put into mounting groove, pin is pierced on pinhole and electrode retaining collar and interference fit under electrode retaining collar, form electrode retaining collar;
3) at reserved commissure weld nugget, obtain with brill side direction resistivity logging tool electrode system structure;
When the first insulating layer is rubber insulation, comprise the following steps:
1) adopt the shaping mode of moulding to form the first insulating layer at the drill collar body surface of having polished, then adopt glass reinforced plastic winding technique second insulating layer at the first surface of insulating layer;
2) install on the surface of the second insulating layer on the electrode retaining collar being equipped with pinhole and under electrode retaining collar, and make to snap together on electrode retaining collar He under electrode retaining collar, pinhole on electrode retaining collar and under electrode retaining collar is positioned at straight line, fastening place allowance weld on electrode retaining collar and under electrode retaining collar, all mounting groove is milled out on electrode retaining collar He under electrode retaining collar, then pin is put into mounting groove, pin is pierced into pinhole and electrode retaining collar interference fit, form electrode retaining collar;
3) at reserved commissure weld nugget, obtain with brill side direction resistivity logging tool electrode system structure.
Before on installing electrodes ring and under electrode retaining collar, the inner surface uniform application one deck bonding adhesive on electrode retaining collar and under electrode retaining collar.
Compared with prior art, beneficial effect of the present invention is:
The first insulating layer that the present invention adopts is ceramic insulating layer or rubber insulation, and the second insulating layer is glass fibre reinforced plastic insulating layer.When the first insulating layer is ceramic insulating layer, between first and second insulating layer, be also provided with the polytetrafluorethylecoatings coatings in the gap for eliminating the first insulating layer; Ceramic insulating layer of the present invention has high temperature resistant, wear-resisting, corrosion-resistant, insulation characterisitic; Polytetrafluorethylecoatings coatings can not only eliminate the gap of ceramic insulating layer ceramic materials simultaneously, ensures insulating properties; And in addition wear-resisting, hardness is high, corrosion-resistant, insulation is good and under any vacuum condition, there will not be the effect of delamination; When the present invention first insulating layer is rubber insulation, rubber insulation is high temperature resistant (reaching 275 DEG C), antivibration, corrosion-resistant, resistance to erosion, therefore, electrode system structure of the present invention can improve the insulation of electrode system, resistance to erosion, antivibration and high temperature high voltage resistant performance, meet the needs of electrode system long-time stable, reliably working in oil/gas drilling environment, meet the needs of electrode system long-time stable, reliably working in oil/gas drilling environment, the application life of electrode system is improved greatly.Electrode system compact overall structure, manufacture craft precise and reliable are high.
In addition, the present invention adopts glass reinforced plastic winding technique to be wound around the second insulating layer on polytetrafluorethylecoatings coatings surface, and glass reinforced plastic winding technique specifically vacuumizes in first chamber, use the VARTM (vacuum assisted resin transfer molding) of injector resin by injection again, the mobility of resin in mold cavity can be improved so immersion, drain bubble better.
Further, electrode retaining collar interlocks by electrode retaining collar He under electrode retaining collar, is fixed the fixed form of rear spot welding by pin, and before changing, during built-up welding, the high temperature that produces, on the impact of glass fibre reinforced plastic insulating layer insulating properties, and effectively solves the problem that electrode retaining collar comes off.
Accompanying drawing explanation
Fig. 1 be the present invention the first with brill side direction resistivity logging tool electrode system structural representation;
Fig. 2 is A-A sectional drawing in Fig. 1;
Fig. 3 is that the second of the present invention is with brill side direction resistivity logging tool electrode system structural representation;
Fig. 4 is B-B sectional drawing in Fig. 2;
Fig. 5 is that the present invention is with the axial view of boring electrode retaining collar in side direction resistivity logging tool electrode system structure;
Fig. 6 is that the present invention is with the radial direction figure boring electrode retaining collar in side direction resistivity logging tool electrode system structure;
Wherein, the 1, first insulating layer, the 2, second insulating layer, 3, electrode retaining collar, 4, polytetrafluorethylecoatings coatings, 5, drill collar body, 6, on electrode retaining collar, 7, under electrode retaining collar, 8, pinhole, 9, pin, 10, mounting groove, 11, weld seam.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further details.
See Fig. 1-6, the invention discloses two kinds and comprise drill collar body 5 and first and second insulating layer 1 with brill side direction resistivity logging tool electrode system structure, 2 and electrode retaining collar 3, first and second insulating layer 1,2 and electrode retaining collar 3 are located at the surface of drill collar body 5 from inside to outside successively along drill collar body 5 radial direction; The first described insulating layer 1 is ceramic insulating layer or rubber insulation, and the second insulating layer 2 is glass fibre reinforced plastic insulating layer.
See Fig. 5-6, electrode retaining collar 3 to comprise on the electrode retaining collar that snaps together under 6 and electrode retaining collar 7, on electrode retaining collar 6 and electrode retaining collar under 7 be all milled with and be convenient to the mounting groove 10 of pin 9 is installed, on electrode retaining collar 6 and electrode retaining collar under 7 be equipped with pinhole 8, pin 9 to pierce on pinhole 8 and electrode retaining collar 7 interference fit under 6 and electrode retaining collar, by electrode retaining collar 6 and electrode retaining collar under 7 to be fixed together; On electrode retaining collar 6 and electrode retaining collar under 7 fastening place be reserved with weld seam 11, weld seam 11 place point is welded with solder joint, and the inwall of electrode retaining collar 3 scribbles adhesive, makes electrode retaining collar 3 be combined more firm with the second insulating layer 2; The material selection TC11 magnetism-free stainless steel of electrode retaining collar 3, has the features such as withstand voltage, easy processing, material is light, intensity is high, conduct electricity very well.
See Fig. 1 and 2, when the first insulating layer 1 is ceramic insulating layer, first and second insulating layer 1, also be provided with the polytetrafluorethylecoatings coatings 4 for eliminating the first insulating layer 1 gap between 2, ceramic insulating layer selects aluminium oxide ceramics, and aluminium oxide ceramics has the characteristics such as high temperature resistant, wear-resisting, corrosion-resistant, insulation, insulation values can reach more than 500M Ω at normal temperatures, under HTHP (175 DEG C, 140MPa), insulation values >=50M Ω, the thickness of ceramic insulating layer is 0.2mm-0.4mm; Polytetrafluorethylecoatings coatings heatproof 260 DEG C, effectively eliminate the gap of ceramic insulating layer, ensure that insulating properties, have high temperature resistant, wear-resisting, high rigidity, corrosion-resistant, insulation is good and under any vacuum condition, there will not be the characteristic of delamination, the thickness of polytetrafluorethylecoatings coatings 4 is 0.5mm.See Fig. 3 and Fig. 4, when the first insulating layer 1 is rubber insulation, the performances such as the material that rubber insulation adopts is fluorubber, has high temperature resistant (reaching 275 DEG C), antivibration, corrosion-resistant, resistance to erosion.The thickness of rubber insulation is 2-3mm.
The second insulating layer 2 adopted in above-mentioned two kinds of structures is glass fibre reinforced plastic insulating layer, the material that this glass fibre reinforced plastic insulating layer adopts is epoxy resin, glass fiber reinforced plastic is selected high temperature resistant, high pressure resistant, wear-resisting, resistance toly wash away epoxy resin (high temperature 275 DEG C, high pressure 140MPa), and in the first structure (when namely the first insulating layer 1 is ceramic insulating layer, glass fibre reinforced plastic insulating layer can protect ceramic insulating layer and polytetrafluorethylecoatings coatings 4, painting ceramic insulating layer and polytetrafluorethylecoatings coatings 4 when installing electrodes ring 3 is avoided directly to contact with electrode retaining collar 3 inner surface and damage ceramic insulating layer and polytetrafluorethylecoatings coatings 4, avoid destroying electrode system integral insulation performance.
See Fig. 1-2 and Fig. 5-6, when the first insulating layer 1 is ceramic insulating layer, when the second insulating layer 2 is glass fibre reinforced plastic insulating layer, comprise the following steps:
1) mode of pyrolytic coating (temperature is 2038 DEG C) is adopted to form first insulating layer 1 of 0.2mm-0.4mm on drill collar body 5 surface of having polished, then adopt hot-spraying technique to form 0.5mm polytetrafluorethylecoatings coatings 4 on the surface of the first insulating layer 1, then adopt glass reinforced plastic winding technique to be wound around the second insulating layer 2 on polytetrafluorethylecoatings coatings 4 surface; Glass reinforced plastic winding technique vacuumizes in first chamber, then use VARTM (vacuum assisted resin transfer molding) technology of injector injection ring epoxy resins, and it is immersion that the method can improve the mobility of resin in mold cavity, drains bubble better;
2) 7 are installed on the electrode retaining collar being equipped with pinhole 8 under 6 and electrode retaining collar on the surface of the second insulating layer 2, and 7 to snap together under making on electrode retaining collar 6 and electrode retaining collar, on electrode retaining collar 6 and electrode retaining collar under 7 the axis of pinhole 8 be positioned at straight line, on electrode retaining collar 6 and electrode retaining collar under 7 fastening place allowance weld 11, on electrode retaining collar 6 and electrode retaining collar under 7 all mill out mounting groove 10, then pin is put into mounting groove 10, pin 9 is pierced into pinhole 8 and electrode retaining collar 3 interference fit, form electrode retaining collar 3;
3) at reserved weld seam 11 place weld nugget, obtain with brill side direction resistivity logging tool electrode system structure; Effectively solve the problem that electrode retaining collar 4 comes off.
When the first insulating layer 1 is rubber insulation, when the second insulating layer is glass fibre reinforced plastic insulating layer, comprise the following steps:
1) adopt the shaping mode of moulding to form first insulating layer 1 of 2-3mm on drill collar body 5 surface of having polished, then adopt glass reinforced plastic winding technique second insulating layer 2 on the first insulating layer 1 surface; Glass reinforced plastic winding technique vacuumizes in first chamber, then use VARTM (vacuum assisted resin transfer molding) technology of injector injection ring epoxy resins, and it is immersion that the method can improve the mobility of resin in mold cavity, drains bubble better;
2) 7 are installed on the electrode retaining collar being equipped with pinhole 8 under 6 and electrode retaining collar on the surface of the second insulating layer 2, and 7 to snap together under making on electrode retaining collar 6 and electrode retaining collar, on electrode retaining collar 6 and electrode retaining collar under 7 the axis of pinhole 8 be positioned at straight line, on electrode retaining collar 6 and electrode retaining collar under 7 fastening place allowance weld 11, on electrode retaining collar 6 and electrode retaining collar under 7 all mill out mounting groove 10, then pin is put into mounting groove 10, pin 9 is pierced into pinhole 8 and electrode retaining collar 3 interference fit, form electrode retaining collar 3; Wherein, on installing electrodes ring 6 and electrode retaining collar under before 7, on electrode retaining collar 6 and electrode retaining collar under 7 inner surface uniform application one deck bonding adhesive.
3) at reserved weld seam 11 place weld nugget, obtain, with brill side direction resistivity logging tool electrode system structure, effectively solving the problem that electrode retaining collar 3 comes off.
The present invention is specially adapted to brill side direction resistivity logging tool, to improve the performances such as the insulation of electrode system, resistance to erosion, antivibration and high temperature high voltage resistant.The present invention also can be used for similar side direction quasi-resistance rate logger.This electrode system structural entity compact conformation, manufacture craft precise and reliable are high, have that insulating properties are high, bonding firm, the resistance to erosion of insulating layer, anti-vibration, the advantage such as high temperature resistant, high pressure resistant, stability, the reliability with boring side direction resistivity logging tool can be significantly improved, can be applicable to similar logger, down-hole slurry is effectively prevented to immerse electrode system insulating layer and reduce insulating properties, solve electrode retaining collar to come off, the application life of electrode system is improved greatly.And electrode retaining collar adopts upper and lower electrode retaining collar to interlock, and is fixed the fixed form of rear spot welding by pin, before changing, during built-up welding, the high temperature that produces, on the impact of glass fibre reinforced plastic insulating layer insulating properties, and effectively solves the problem that electrode retaining collar comes off.
Claims (10)
1. with brill side direction resistivity logging tool electrode system structure, it is characterized in that: comprise drill collar body (5), first and second insulating layer (1,2) and electrode retaining collar (3), first and second insulating layer (1,2) and electrode retaining collar (3) are located at the surface of drill collar body (5) from inside to outside successively along drill collar body (5) radial direction; Described the first insulating layer (1) is ceramic insulating layer or rubber insulation, and the second insulating layer (2) is glass fibre reinforced plastic insulating layer; When the first insulating layer (1) is for ceramic insulating layer, between first and second insulating layer (1,2), be also provided with the polytetrafluorethylecoatings coatings (4) for eliminating the first insulating layer (1) gap.
2. according to claim 1 with brill side direction resistivity logging tool electrode system structure, it is characterized in that: described electrode retaining collar (3) to comprise on the electrode retaining collar that snaps together under (6) and electrode retaining collar (7).
3. according to claim 2 with brill side direction resistivity logging tool electrode system structure, it is characterized in that: (7) under (6) on electrode retaining collar and electrode retaining collar are fixed together by interference fit by described pin (9).
4. according to claim 3 with brill side direction resistivity logging tool electrode system structure, it is characterized in that: on described electrode retaining collar, under (6) and electrode retaining collar, (7) are equipped with pinhole (8), pin (9) pierces into pinhole (8) and (7) interference fit under (6) on electrode retaining collar and electrode retaining collar; On electrode retaining collar, under (6) and electrode retaining collar, the fastening place of (7) is reserved with weld seam (11), and weld seam (11) place point is welded with solder joint.
5. according to claim 3 with brill side direction resistivity logging tool electrode system structure, it is characterized in that: on described electrode retaining collar, under (6) and electrode retaining collar, (7) are all milled with the mounting groove (10) being convenient to installation pin (9).
6. according to claim 1 with brill side direction resistivity logging tool electrode system structure, it is characterized in that: the material that described rubber insulation adopts is fluorubber, the material that ceramic insulating layer adopts is aluminium oxide ceramics, the material that glass fibre reinforced plastic insulating layer adopts is epoxy resin, the material selection TC11 magnetism-free stainless steel of electrode retaining collar (3).
7. according to claim 1 with brill side direction resistivity logging tool electrode system structure, it is characterized in that: the inwall of described electrode retaining collar (3) scribbles adhesive.
8. according to claim 1 with brill side direction resistivity logging tool electrode system structure, it is characterized in that: when the first insulating layer (1) is for ceramic insulating layer, the thickness of the first insulating layer (1) is 0.2mm-0.4mm; The thickness of polytetrafluorethylecoatings coatings (4) is 0.5mm; When the first insulating layer (1) is for rubber insulation, the thickness of the first insulating layer (1) is 2-3mm.
9., as the preparation method with brill side direction resistivity logging tool electrode system structure in Claims 1 to 4 as described in any one claim, it is characterized in that:
When the first insulating layer (1) is for ceramic insulating layer, comprise the following steps:
1) mode of spraying is adopted to form the first insulating layer (1) on drill collar body (5) surface of having polished, then adopt hot-spraying technique to form polytetrafluorethylecoatings coatings (4) on the surface of the first insulating layer (1), then adopt glass reinforced plastic winding technique to be wound around the second insulating layer (2) on polytetrafluorethylecoatings coatings (4) surface;
2) install on the surface of the second insulating layer (2) and to be equipped with on the electrode retaining collar of pinhole (8) under (6) and electrode retaining collar (7), and to make on electrode retaining collar (7) under (6) and electrode retaining collar to snap together, on electrode retaining collar, under (6) and electrode retaining collar, the pinhole (8) of (7) is positioned at straight line, fastening place allowance weld (11) of (7) under (6) and electrode retaining collar on electrode retaining collar, on electrode retaining collar, under (6) and electrode retaining collar, (7) all mill out mounting groove (10), then pin is put into mounting groove (10), pin (9) is pierced into pinhole (8) and (7) interference fit under (6) on electrode retaining collar and electrode retaining collar, form electrode retaining collar (3),
3) at reserved weld seam (11) place weld nugget, obtain with brill side direction resistivity logging tool electrode system structure;
When the first insulating layer (1) is for rubber insulation, comprise the following steps:
1) adopt the shaping mode of moulding to form the first insulating layer (1) on drill collar body (5) surface of having polished, then adopt glass reinforced plastic winding technique second insulating layer (2) on the first insulating layer (1) surface;
2) install on the surface of the second insulating layer (2) and to be equipped with on the electrode retaining collar of pinhole (8) under (6) and electrode retaining collar (7), and to make on electrode retaining collar (7) under (6) and electrode retaining collar to snap together, on electrode retaining collar, under (6) and electrode retaining collar, the pinhole (8) of (7) is positioned at straight line, fastening place allowance weld (11) of (7) under (6) and electrode retaining collar on electrode retaining collar, on electrode retaining collar, under (6) and electrode retaining collar, (7) all mill out mounting groove (10), then pin is put into mounting groove (10), pin (9) is pierced into pinhole (8) and electrode retaining collar (3) interference fit, form electrode retaining collar (3),
3) at reserved weld seam (11) place weld nugget, obtain with brill side direction resistivity logging tool electrode system structure.
10. the preparation method with boring side direction resistivity logging tool electrode system structure according to claim 9, it is characterized in that: on installing electrodes ring, under (6) and electrode retaining collar, (7) are front, inner surface uniform application one deck bonding adhesive of (7) under (6) and electrode retaining collar on electrode retaining collar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410759458.5A CN104453883A (en) | 2014-12-10 | 2014-12-10 | Electrode system structure for lateral resistivity logging while drilling instrument and method for manufacturing electrode system structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410759458.5A CN104453883A (en) | 2014-12-10 | 2014-12-10 | Electrode system structure for lateral resistivity logging while drilling instrument and method for manufacturing electrode system structure |
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| CN104453883A true CN104453883A (en) | 2015-03-25 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107816344A (en) * | 2017-09-20 | 2018-03-20 | 中国石油天然气集团公司 | One kind is with brill side electrode array main screen integral electrode structure and preparation method thereof |
| CN107869347A (en) * | 2016-09-22 | 2018-04-03 | 中国石油天然气股份有限公司 | Logging-while-drilling instrument and manufacturing method of azimuth polar plate structure |
| CN108150159A (en) * | 2017-12-21 | 2018-06-12 | 中国电子科技集团公司第二十二研究所 | Logging instrument |
| CN110410064A (en) * | 2019-06-19 | 2019-11-05 | 中国石油天然气集团有限公司 | A kind of imaging logging pipe nipple structure and rotary steerable drilling device based on rotary steering |
| CN110486006A (en) * | 2019-08-21 | 2019-11-22 | 中国海洋石油集团有限公司 | A kind of resistivity measurement pole plate and production method |
| CN114198097A (en) * | 2022-02-18 | 2022-03-18 | 东营仪锦能源科技有限公司 | Drilling-following type double-laterolog instrument |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107869347A (en) * | 2016-09-22 | 2018-04-03 | 中国石油天然气股份有限公司 | Logging-while-drilling instrument and manufacturing method of azimuth polar plate structure |
| CN107869347B (en) * | 2016-09-22 | 2022-06-03 | 中国石油天然气股份有限公司 | Logging-while-drilling instrument and manufacturing method of azimuth polar plate structure |
| CN107816344A (en) * | 2017-09-20 | 2018-03-20 | 中国石油天然气集团公司 | One kind is with brill side electrode array main screen integral electrode structure and preparation method thereof |
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| CN110410064A (en) * | 2019-06-19 | 2019-11-05 | 中国石油天然气集团有限公司 | A kind of imaging logging pipe nipple structure and rotary steerable drilling device based on rotary steering |
| CN110410064B (en) * | 2019-06-19 | 2023-04-25 | 中国石油天然气集团有限公司 | Imaging logging nipple structure based on rotary guide and rotary guide drilling device |
| CN110486006A (en) * | 2019-08-21 | 2019-11-22 | 中国海洋石油集团有限公司 | A kind of resistivity measurement pole plate and production method |
| WO2021031572A1 (en) * | 2019-08-21 | 2021-02-25 | 中国海洋石油集团有限公司 | Resistivity measurement polar plate and manufacturing method |
| CN114198097A (en) * | 2022-02-18 | 2022-03-18 | 东营仪锦能源科技有限公司 | Drilling-following type double-laterolog instrument |
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