CN104165049A - High-strength composite pressure-bearing shell for petroleum logging instrument and preparation method of the high-strength composite pressure-bearing shell - Google Patents
High-strength composite pressure-bearing shell for petroleum logging instrument and preparation method of the high-strength composite pressure-bearing shell Download PDFInfo
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- CN104165049A CN104165049A CN201410385699.8A CN201410385699A CN104165049A CN 104165049 A CN104165049 A CN 104165049A CN 201410385699 A CN201410385699 A CN 201410385699A CN 104165049 A CN104165049 A CN 104165049A
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Abstract
A high-strength composite pressure-bearing shell for a petroleum logging instrument comprises a ceramic layer, a composite jacket high-temperature-resistant abrasion-resistant and corrosion-resistant protection layer arranged on the outer side of the ceramic layer and a transition layer arranged between the ceramic layer and the composite jacket high-temperature-resistant abrasion-resistant and corrosion-resistant protection layer. A preparation method of the high-strength composite pressure-bearing shell includes the following steps that (1) zirconium oxide porcelain or silicon oxide is selected as materials of the ceramic layer, high temperature resistance elastomer coupling reagents serve as materials of the transition layer, and high-strength glass fiber or basalt fiber or aramid fiber impregnated high temperature resistance resin curing agents serve as materials of the composite jacket high-temperature-resistant abrasion-resistant and corrosion-resistant protection layer; (2) it is obtained that the ceramic layer with the thickness of 6-10 mm, the transition layer with the thickness of 1-1.5 mm and the abrasion-resistant and corrosion-resistant protection layer with the thickness of 5-10 mm can meet use requirements in a test according to a calculation formula; (3) the ceramic layer is prepared; (4) the transition layer is arranged on the outer side of the ceramic layer; (5) the high-temperature-resistant abrasion-resistant and corrosion-resistant protection layer is arranged on the outer side of the transition layer. The high-strength composite pressure-bearing shell has excellent heat resistance, so that it is guaranteed that the insulation value cannot be reduced.
Description
Technical field
The invention belongs to oil well logging instrument field, be specifically related to compound bearing shell of high strength for oil well logging instrument and preparation method thereof.
Background technology
In petroleum industry exploration and development, after drilling process or drilling well complete, having an important action is that the crude oil situation of down-hole is carried out to decision analysis, comprises the performance parameter physics such as former reservoir depth, former core intersection, former oil mass or chemistry.This just needs oil well logging instrument to complete this work.
As everyone knows, induction logging and electromagnetic wave logging instrument are the important component parts of conventional oil logger equipment, and these instruments are generally all comprised of electronic circuit and probe (electrode system, coil array) two parts, and instrument probe belongs to electromechanical integration.At whole world logging community electrode system, mostly adopt at present oil pressure balance technology; This technology key character is: 1) fluid by leather bag or piston formation moves packing and balance; 2) a few km environment stresss in down-hole are delivered on each parts of immersion oil by silicone oil in high-temperature composite material insulation crust; 3) the current structure of this shell is high temperature compound inslation tubing; 4) nonmetallic high temperature compound inslation tubing is interference-free in order to be conducive to the transmission of the signal of telecommunication.The whole members of this technical requirements performance parameter under oil immersion and down-hole high-temperature and high-pressure conditions is no more than design tolerances, thereby guarantees that electronics and mechanical part normally work, and makes the complete stable and reliable for performance of instrument.Though adopt the electrode system of oil pressure balance technology to apply decades, its complex process, the easy seepage of fluid, to Production and application, maintenance all brings inconvenience.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the object of this invention is to provide compound bearing shell of high strength for oil well logging instrument and preparation method thereof, the oil well logging instrument that the compound bearing shell of this high strength is manufactured, at instrument, without tank, fill under silicon oil condition, and can bear several kms down-hole immense pressure, i.e. absolute pressure-bearing.
To achieve these goals, the technical solution used in the present invention is:
For the compound bearing shell of high strength of oil well logging instrument, comprise ceramic layer, be arranged on ceramic layer outside the high temperature resistant wear-resistant anticorrosive topping of composite sheath, be arranged on the transition zone between ceramic layer and the high temperature resistant wear-resistant anticorrosive topping of composite sheath.
Described ceramic layer is to consist of zirconium oxide porcelain or silica porcelain.
Described ceramic layer thickness is 6-10 millimeter.
Described transition zone is that high temperature resistant elastic body coupling agent forms.
The composite elastic body that described high temperature resistant elastic body coupling agent is comprised of KH550 or KH560 and acrylonitrile-butadiene rubber or fluorubber or polysulfide rubber.
Described transition region thickness is 1-1.5 millimeter.
Described composite sheath is high temperature resistant, and wear-resistant anticorrosive topping is by high-strength glass fibre or basalt fibre or aramid fiber dipping fire resistant resin curing compound, is entwined.
Described composite sheath is high temperature resistant, and wear-resistant anticorrosive protective layer thickness is 5-10 millimeter.
Described fire resistant resin is high-temperature-resistant epoxy resin or vinylite or polyurethane resin.
The preparation method who is used for the compound bearing shell of high strength of oil well logging instrument, comprises the following steps:
1) selective oxidation zircon porcelain or silica are as the material of ceramic layer, high temperature resistant elastic body coupling agent is as buffer layer material, and high-strength glass fibre or basalt fibre or aramid fiber dipping fire resistant resin curing compound are as the high temperature resistant wear-resistant anticorrosive protective layer material of composite sheath;
2) by design formulas δ=(p * D)/(2 * Σ/S)
Wherein δ is tube thickness.
P is design pressure.
D is pipe external diameter.
Σ is tensile strength.
S is safety factor.
And show that by test the wear-resistant anticorrosive topping that transition zone that the ceramic layer of 6-10 millimeter adds 1-1.5 millimeter adds 5-10 millimeter can meet instructions for use;
3) prepare ceramic layer, specific practice is: isostatic compaction, blank processing, square klining knot, sintering temperature 1700 degree, machining, assembling;
4) at ceramic layer arranged outside transition zone, specific practice is: use the composite elastic body being comprised of KH550 or KH560 and acrylonitrile-butadiene rubber or fluorubber or polysulfide rubber to process ceramic surface and form transition zone;
5) at the high temperature resistant wear-resistant anticorrosive topping of transition zone arranged outside, specific practice is: adopt computer aided manufacturing layer structure-design technique, calculate optimum deck and set up data model, fiber tension: 1.8-4.5N/ thigh, winding angle: 30-60 degree, the structural relation of layer and layer: two-layer longitudinal winding adds one deck hoop winding, select high strength ultimate fibre tensile strength 2800-3100MPa, the acid-resistant glass fiber of high-modulus modulus of elasticity 8600-8900MPa or basalt fibre or aramid fiber dipping fire resistant resin curing compound, by computer-controlled numerical control Wiring apparatus, by the data model that calculates and design, be entwined in advance.
The diameter of oil well is generally in 300 millimeters.The degree of depth of well is not quite similar, and has hundreds of rice, also has 1000 meters-8000 meters, as the degree of depth of offshore oil well more than myriametre.The maximum outside diameter of logger is in 110 millimeters, and tool length is no more than 5 meters.The geological environment of several kms in down-hole is very complicated.175 ℃ of three, four km downhole temperatures, more than pressure 140MPa, darker temperature and pressure index is higher.Simultaneously also with crude oil, natural gas, water, etchant gas H
2s, CO
2, SO
2deng.International oil well logging instrument working condition index is roughly three kinds at present:
1）150℃ 100MPa；
2）175℃ 140MPa；
3）240℃ 175MPa；
The compound bearing shell of high strength of the present invention, under such condition, has excellent heat resistance, thereby guarantees that insulation values must not reduce.Mechanical tensile strength must not be decayed, and prolonged expansion rate must not have large variation.Under anticorrosion stress-resistant effect, appearance color is unchanged, and material-structure must not relax, fissions, ftracture.Guarantee that in during well logging, signal transmission is accurate, reliable and stable.Rock of borehole is hard, and in promoting logger process, definitely the abrasion resistance of bearing shell also seems very important equally.
Accompanying drawing explanation
Fig. 1 is the structural representation of high-temperature bearing insulation crust of the present invention.
Wherein: 1 is ceramic layer; 2 is transition zone; 3 is topping.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Referring to Fig. 1; for the compound bearing shell of high strength of oil well logging instrument, comprise ceramic layer, be arranged on ceramic layer outside the high temperature resistant wear-resistant anticorrosive topping of composite sheath, be arranged on the transition zone between ceramic layer and the high temperature resistant wear-resistant anticorrosive topping of composite sheath.
(1) innermost layer material is ceramic materials, generally selects zirconium oxide porcelain or silicon nitride ceramics, and its thickness is generally within the scope of 6-10 millimeter.
(2) intermediate layer is high temperature resistant elastic body coupling agent, the composite elastic body of generally selecting KH550 or KH560 and acrylonitrile-butadiene rubber or fluorubber or polysulfide rubber to form.Thickness is generally 1-1.5 millimeter.
(3) outermost layer is high temperature resistant, wear-resisting, anti-H
2s, CO
2the composite material of gas attack.Generally select high strength, high-modulus acid-resistant glass fiber (ECR) or basalt fibre or aramid fiber (Kevlar) dipping fire resistant resin curing compound, by computer-controlled numerical control Wiring apparatus, by the data model that calculates and design, be entwined in advance.The thickness being wound around is generally 5-10 millimeter.Resin is generally selected high-temperature-resistant epoxy resin or vinylite or polyurethane resin.
Compound bearing shell preparation method is as follows for high strength of the present invention:
1) selective oxidation zircon porcelain or silica are as the material of ceramic layer, high temperature resistant elastic body coupling agent is as buffer layer material, and high-strength glass fibre or basalt fibre or aramid fiber dipping fire resistant resin curing compound are as the high temperature resistant wear-resistant anticorrosive protective layer material of composite sheath;
2) by design formulas δ=(p * D)/(2 * Σ/S)
Wherein δ is tube thickness.
P is design pressure.
D is pipe external diameter.
Σ is tensile strength.
S is safety factor.
And show that by test the wear-resistant anticorrosive topping that transition zone that the ceramic layer of 6-10 millimeter adds 1-1.5 millimeter adds 5-10 millimeter can meet instructions for use;
3) prepare ceramic layer, specific practice is: isostatic compaction, blank processing, square klining knot (sintering temperature 1700 degree), machining, assembling.
4) at ceramic layer arranged outside transition zone, specific practice is: use the composite elastic body being comprised of KH550 or KH560 and acrylonitrile-butadiene rubber or fluorubber or polysulfide rubber to process ceramic surface and form transition zone.
5) at the high temperature resistant wear-resistant anticorrosive topping of transition zone arranged outside, specific practice is: adopt computer aided manufacturing layer structure-design technique, calculate optimum deck and set up data model, fiber tension: 1.8-4.5N/ thigh, winding angle: 30-60 degree, the structural relation of layer and layer: two-layer longitudinal winding adds one deck hoop winding, select high strength ultimate fibre tensile strength 2800-3100MPa, the acid-resistant glass fiber of high-modulus modulus of elasticity 8600-8900MPa or basalt fibre or aramid fiber dipping fire resistant resin curing compound, by computer-controlled numerical control Wiring apparatus, by the data model that calculates and design, be entwined in advance.
Consider the more light better technical requirements (lighting future development) of oil well logging instrument, reduce as far as possible and use the larger nonmetallic composite of density.
Oil well logging instrument of the present invention, that produce with insulation crust this composite insulation structure manufacture, that can bear underground a few km high temperature, high pressure, adopts filling silicone oil to guarantee the technology that the insulation crust of oil well logging instrument is not destroyed by underground crunch thereby thoroughly take leave of tradition.Solved puzzlement oil well logging instrument manufacturing for these years because of fluid easy to leak, complex process and maintenance under oil well logging instrument HTHP and inconvenient technical barrier.Give research and development, design, the manufacturer of vast oil well logging instrument provide more choices space and wide imagination.
Without filling silicone oil, just can manufacture the revolution that oil well logging instrument can be described as oil well logging instrument manufacturing.
The above, it is only preferred embodiment of the present invention, not the present invention is done to any pro forma restriction, although the present invention discloses as above with preferred embodiment, yet not in order to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, when can utilizing the method for above-mentioned announcement and technology contents to make a little change or being modified to the equivalent embodiment of equivalent variations, in every case be the content that does not depart from technical solution of the present invention, any simple modification of above embodiment being done according to technical spirit of the present invention, equivalent variations and modification, still belong in the scope of technical solution of the present invention.
Claims (10)
1. for the compound bearing shell of high strength of oil well logging instrument; it is characterized in that, comprise ceramic layer, be arranged on ceramic layer outside the high temperature resistant wear-resistant anticorrosive topping of composite sheath, be arranged on the transition zone between ceramic layer and the high temperature resistant wear-resistant anticorrosive topping of composite sheath.
2. the compound bearing shell of the high strength for oil well logging instrument according to claim 1, is characterized in that, described ceramic layer is to consist of zirconium oxide porcelain or silica porcelain.
3. the compound bearing shell of the high strength for oil well logging instrument according to claim 1 and 2, is characterized in that, described ceramic layer thickness is 6-10 millimeter.
4. the compound bearing shell of the high strength for oil well logging instrument according to claim 1, is characterized in that, described transition zone is that high temperature resistant elastic body coupling agent forms.
5. the compound bearing shell of the high strength for oil well logging instrument according to claim 4, is characterized in that, the composite elastic body that described high temperature resistant elastic body coupling agent is comprised of KH550 or KH560 and acrylonitrile-butadiene rubber or fluorubber or polysulfide rubber.
6. according to the compound bearing shell of the high strength for oil well logging instrument described in claim 1 or 4, it is characterized in that, described transition region thickness is 1-1.5 millimeter.
7. the compound bearing shell of the high strength for oil well logging instrument according to claim 1; it is characterized in that, described composite sheath is high temperature resistant, and wear-resistant anticorrosive topping is by high-strength glass fibre or basalt fibre or aramid fiber dipping fire resistant resin curing compound, is entwined.
8. according to the compound bearing shell of the high strength for oil well logging instrument described in claim 1 or 7, it is characterized in that, described composite sheath is high temperature resistant, and wear-resistant anticorrosive protective layer thickness is 5-10 millimeter.
9. the compound bearing shell of the high strength for oil well logging instrument according to claim 7, is characterized in that, described fire resistant resin is high-temperature-resistant epoxy resin or vinylite or polyurethane resin.
10. for the preparation method of the compound bearing shell of high strength of oil well logging instrument, it is characterized in that, comprise the following steps:
1) selective oxidation zircon porcelain or silica are as the material of ceramic layer, high temperature resistant elastic body coupling agent is as buffer layer material, and high-strength glass fibre or basalt fibre or aramid fiber dipping fire resistant resin curing compound are as the high temperature resistant wear-resistant anticorrosive protective layer material of composite sheath;
2) by design formulas δ=(p * D)/(2 * Σ/S)
Wherein δ is tube thickness.
P is design pressure.
D is pipe external diameter.
Σ is tensile strength.
S is safety factor.
And show that by test the wear-resistant anticorrosive topping that transition zone that the ceramic layer of 6-10 millimeter adds 1-1.5 millimeter adds 5-10 millimeter can meet instructions for use;
3) prepare ceramic layer, specific practice is: isostatic compaction, blank processing, square klining knot (sintering temperature 1700 degree), machining, assembling;
4) at ceramic layer arranged outside transition zone, specific practice is: use the composite elastic body being comprised of KH550 or KH560 and acrylonitrile-butadiene rubber or fluorubber or polysulfide rubber to process ceramic surface and form transition zone;
5) at the high temperature resistant wear-resistant anticorrosive topping of transition zone arranged outside, specific practice is: adopt computer aided manufacturing layer structure-design technique, calculate optimum deck and set up data model, fiber tension: 1.8-4.5N/ thigh, winding angle: 30-60 degree, the structural relation of layer and layer: two-layer longitudinal winding adds one deck hoop winding, select high strength ultimate fibre tensile strength 2800-3100MPa, the acid-resistant glass fiber of high-modulus modulus of elasticity 8600-8900MPa or basalt fibre or aramid fiber dipping fire resistant resin curing compound, by computer-controlled numerical control Wiring apparatus, by the data model that calculates and design, be entwined in advance.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410385699.8A CN104165049A (en) | 2014-08-07 | 2014-08-07 | High-strength composite pressure-bearing shell for petroleum logging instrument and preparation method of the high-strength composite pressure-bearing shell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410385699.8A CN104165049A (en) | 2014-08-07 | 2014-08-07 | High-strength composite pressure-bearing shell for petroleum logging instrument and preparation method of the high-strength composite pressure-bearing shell |
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| CN104165049A true CN104165049A (en) | 2014-11-26 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108678684A (en) * | 2018-06-29 | 2018-10-19 | 山东大学 | A kind of impact resistance composite material sucker rod |
| CN110985771A (en) * | 2019-12-26 | 2020-04-10 | 衡水瑞纤新材料科技有限公司 | Basalt fiber reinforced composite pipe |
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Application publication date: 20141126 |