CN1280443C - Expanding metal material and bulged tube device for petroleum oil well - Google Patents
Expanding metal material and bulged tube device for petroleum oil well Download PDFInfo
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- CN1280443C CN1280443C CN 200410019863 CN200410019863A CN1280443C CN 1280443 C CN1280443 C CN 1280443C CN 200410019863 CN200410019863 CN 200410019863 CN 200410019863 A CN200410019863 A CN 200410019863A CN 1280443 C CN1280443 C CN 1280443C
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- 239000003208 petroleum Substances 0.000 title description 3
- 239000007769 metal material Substances 0.000 title 1
- 239000000956 alloy Substances 0.000 claims abstract description 23
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 11
- 238000005516 engineering process Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 230000032683 aging Effects 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000003129 oil well Substances 0.000 abstract description 7
- 238000005553 drilling Methods 0.000 abstract description 6
- 230000007246 mechanism Effects 0.000 abstract description 3
- 230000008439 repair process Effects 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000004873 anchoring Methods 0.000 abstract 1
- 238000013459 approach Methods 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- 150000001247 metal acetylides Chemical class 0.000 abstract 1
- 229910052761 rare earth metal Inorganic materials 0.000 abstract 1
- 150000002910 rare earth metals Chemical class 0.000 abstract 1
- 239000000463 material Substances 0.000 description 16
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 7
- 238000005728 strengthening Methods 0.000 description 7
- 229910026551 ZrC Inorganic materials 0.000 description 5
- OTCHGXYCWNXDOA-UHFFFAOYSA-N [C].[Zr] Chemical compound [C].[Zr] OTCHGXYCWNXDOA-UHFFFAOYSA-N 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 230000035882 stress Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 3
- 210000000664 rectum Anatomy 0.000 description 3
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- 238000003483 aging Methods 0.000 description 2
- 229910001566 austenite Inorganic materials 0.000 description 2
- 238000002524 electron diffraction data Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000885 Dual-phase steel Inorganic materials 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
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- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000000518 rheometry Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000012781 shape memory material Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Images
Classifications
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/10—Setting of casings, screens, liners or the like in wells
- E21B43/103—Setting of casings, screens, liners or the like in wells of expandable casings, screens, liners, or the like
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The present invention relates to an expansion alloy and an expansion pipe for oil wells. The expansion alloy comprises 0.03 to 0.55% of C, 0 to 6.0% of Si, 0 to 15% of Mn, 0 to 20% of Cr, 0 to 20% of Ni, 0.02 to 0.08% of N, at most 0.03% of P, at most 0.03% of S, 0.15% of mixed rare earth, 0 to 0.8% of Ti, 0 to 1.47% of Zr and balance of Fe, wherein the total amount of TiC and ZrC (carbides) in the alloy is from 0.1 to 1.5%. The plasticity (K=sigma*delta) of the expansion alloy can reach 3800MPa%; after the diameter of the expansion pipe is increased in a shape memory connection mode, the expansion pipe can be still in the favorable sealed state, and the internal pressure resistance of the expansion pipe approaches 50MPa; and the expansion pipe can be used as bullet pistons and centering guides in technological devices, hydraulic anchoring mechanisms, etc. The expansion pipe has the advantages of simple structure, stable operation and convenient use. The expansion alloy is significant for oil well drilling, well completion and long well section repair, and has significant generalization value for repairing other pipelines.
Description
Technical field
The present invention relates to a kind of oil well with expansion alloy material and expansion pipe device,, have the material and the expansion process device of excellent strong plasticity in particular for petroleum well workover.
Background technology
Solid expansion pipe SET (Solid Expandable Tubulars) is emerging technology in petroleum drilling, completion and the well workover engineering, the characteristics of method are with sleeve pipe RIH predetermined position, by intervalve slurry conveyed liquid, fill with the clearance space of outside of sleeve, the promotion of awl liquid body pressure, hole enlargement expansion sleeve are from bottom to up expanded in the bottom then; Make caliber that the 10-30% flow take place; Bulged tube technology is optimized hole structure, original protector string is made up of multiple size sleeve pipe, has up big and down small tapered well body structure, for example state inland basin ultra deep well and marine drilling employing sleeve structure series is 30 "-20 "-13 3/8 "-9 5/8 "-7 "-5 ", then oversize, the broken rock moment of torsion of oil well upper bore is big, the low drilling depth of drilling speed is few, so the drilling cost height.And the employing bulged tube technology, the top well is little, and drill footage is big, can adopt small casing, can reduce expenses; Solid expansion pipe is filled with grout in addition, utilizes the expansion pipe extruding can improve consolidation effect, has improved cementing quality at all; New technology has enlarged sleeve pipe work latus rectum simultaneously, makes things convenient for borehole operation, is beneficial to the raising per-well production; Especially can repair the long well section sleeve pipe, exist the sleeve pipe of hole, crackle, bad break defective to repair for long distance in the past, and very effective with expansion pipe solution big section sidetracked hole and deviated borehole casing corrosion problem; Utilize expansion pipe to hang and packing good sealing effect, simple, with low cost, the long service life of operation; Be convenient to the multiple accident of emergency processing bad ground in addition, can properly settle complex hole condition such as saliferous rubble zone, pressure break and presser sensor location and mud stone layer, drift sand formation, storage coal seam, saline bed, change shell of compression, the landslide of sugarcoated haws on a stick well; The entity pipe also significantly is better than conventional pkr as the packing of emergent pipe, and in view of this bulged tube technology is very promising great technological change, and for example, Chinese patent CN1079886C discloses a kind of expandable tubular sleeve.But three problems of current existence: the one, expansion pipe adopts Hi-Stren steel, and expansion hole enlargement plasticity is had a surplus, and deals with the external pressure strength deficiency; The 2nd, adopt special thread to connect between the following casing, processing difficulties, the construction assembling is comparatively loaded down with trivial details; The 3rd, also instrument is too complicated down, for 5 1/2 " well head, the tool part of going into the well surpasses more than 2000 unexpectedly; This device runs into bad ground simultaneously, and the operation of expanding is not steady.
Invention provides oil well expansion alloy material and expansion pipe device for this reason, can overcome the deficiency of prior art.The present invention expand tubing, expansion gear and telescopic joint simple for process, reliable and stable, very practical also can be promoted the use of in others.
Summary of the invention
The object of the present invention is to provide a kind of oil well expansion alloy material and expansion pipe device, can overcome the deficiency of prior art.The invention provides phase change expansion pipe with high-ductility and the shape memory method of attachment between bullet-nose expansion gear and sleeve pipe.The present invention expand tubing, expansion gear and telescopic joint simple for process, reliable and stable, very practical also can be promoted the use of in others.
It is as follows that the weight percent of expansion alloy material of the present invention is formed (%):
C:0.03-0.50; Si:0-6.0; Mn:0-15; Cr:0-20; Ni:0-20; N:0.02-0.08; P≤0.03; S≤0.03; Mishmetal R
E: 0.1
*Ti:0-0.8; Zr; 0-1.47; Fe: surplus; In addition, requiring to have the cumulative volume content of carbide TiC and ZrC in the alloy is 0.1-1.5%.(
*Be add-on).
The manufacture method of above-mentioned alloy (universal method) is to add Ti and Zr and the alloy that is smelted into, and ageing treatment is carried out in the processing that homogenizes in 1000-1200 ℃ temperature range then in 400-900 ℃ temperature range, carbide is separated out.
Carbide for example zirconium carbide is separated out as shown in Figure 1, Fig. 1 (a) is transmission electron microscope (a 111) ZrC dark field image, and Fig. 1 (b) is an electron diffraction pattern, and wherein blotch is the austenite spot, belong to [1 21] zone axis, speckle is the spot of coordination to coherence zirconium carbide precipitated phase.
Expansion alloy material of the present invention has high-ductility in expansion hole enlargement process, also satisfy the critical external compressive resistance requirement simultaneously, has high strength.In order to express the composite request of unit elongation δ and intensity σ two aspects, available the two product K=σ δ (MPa%) expresses " the strong plasticity " of material.Get σ-δ coordinate as Fig. 2, obviously the function for certain K value is a hyperbolic line, and the different K values curve will be divided into different strong plastic regions among the figure.The figure bottom is a plasticity soft steel preferably, though the unit elongation height, the K value is on the low side.Wherein middle carbon quenched and tempered steel K increases, and the strong plasticity of dual phase steel is better under the contrast, and what the middle part showed is to use the expansion alloy material now, and K=25000MPa% is shown in the figure right middle.Expansion alloy material of the present invention has good strong plasticity K 〉=38000MPa%, shown in the figure upper right corner.
The present invention mainly conceives phase change induction plasticity Trip (Transfomation inducedplasticity) mechanism of having utilized.Material virgin state atomic arrangement is the face-centered cubic fcc austenite structure of A, B, C, A, B, C..... order solid matter stacking, see Fig. 3 left side, work as material load, under stress, generation cycle fault, form A, B, A, B, A, the B.... stacking sequence of the heart, forming cenotype is the ε martensite of hcp, Fig. 3 right side.Deformation has promoted flow in tissue inter-variable's process.General material produces piling up of dislocations in early days, causes stress raisers, aggravates local flow until fracture.The expansion alloy material stacking fault energy of invention is low, and dislocation is handed over slippage easily, so surrender in early days behind the material stand under load, the annealed state yield strength is about 35000MPa.When this material tensile bar stand under load stretches, evenly attenuate on the whole mark lengths, local necking does not take place, annealed state unit elongation δ ≈ 50%.This material multiple strengthening mechanism mainly comprises grain-boundary strengthening, solution strengthening, phase transformation strengthening, fault reinforcement, dislocations strengthening and dispersion-strengthened etc., and intensity can be expressed as follows:
σ=∑ σ
i=σ
Crystal boundary+ σ
Solid solution+ σ
Phase transformation+ σ
Fault+ σ
Dislocation+ σ
DisperseFault and dislocation successively cause early stage surrender, thereby have low yield tensile ratio σ
s/ σ
b=0.4.Because multiple strengthening has big work hardening rate d σ/d ε ≈ 3.Expanding material of the present invention has the characteristics of low surrender, rapid hardening, high strength, wide flow, is fit to very much the requirement of expansion hole enlargement.Relatively comprehensive, material of the present invention possesses following advantage:
1) You Yi strong plasticity needs to be increased to 5000MPa% as reality.
2) the low surrender of annealed state material can the smooth starting dilatational strain.
3) has high cementation index, d σ/d ε 〉=3.
4) composition is convenient to adjust, and can further improve intensity by age hardening.
Expansion pipe device of the present invention is made of guide head, lower seal awl, set screw nut, bullet piston, time expansion pipe, set collar, centralizer, shape memory joint, sealing-ring, last expansion pipe, rubber ring, retaining ring, positional cylinder, hydraulicefficiency pipe, returning spring, hydraulic hold-down, weight-bearing caliper, well heater.Said expansion pipe down and adjacent going up between the expansion pipe or between other expansion pipe and the expansion pipe are held connection tightly with the shape memory joint; Connecting said shape memory joint embeds and is connected the expansion pipe end and docks in the formed annular recesses.Between the said shape memory joint inboard and the expansion pipe outside sealing-ring is arranged; The bullet piston is equipped with on the top of expansion pipe hole enlargement inboard, said bottom, and lower inside is equipped with lower seal awl and guide head; Hydraulicefficiency pipe with being threaded into, is run through bullet piston center, lock with set screw nut again; Said hydraulicefficiency pipe is located with set collar and centralizer, and hydraulicefficiency pipe upper flange cylinder can slide in the positional cylinder post; There is the three pairs of hydraulic hold-downs and the returning spring of circumferential 120 ° of dresses that distribute at said positional cylinder middle part; But said weight-bearing caliper clamping liquid pressure pipe; The well heater that said positional cylinder top has heating shape memory joint to use.Be connected with the high-ductility metal o-ring with the iron-base shape memory joint between the said expansion pipe.
Substantive distinguishing features that the present invention gives prominence to and marked improvement can be embodied from following example.But they can not impose any restrictions the present invention.
Description of drawings
Fig. 1. the electron microscope picture of zirconium carbide and electron diffraction pattern.
Fig. 2. the strong plasticity distribution plan of material.
Fig. 3. material structure changes synoptic diagram.
Fig. 4. expansion pipe device figure.
Embodiment
Embodiment:
Expansion pipe device of the present invention as shown in Figure 4, it comprise guide head 1, lower seal awl 2, set screw nut 3, bullet piston 4, down expansion pipe 5, set collar 6, centralizer 7, shape memory joint 8, sealing-ring 9, go up expansion pipe 10, rubber ring 11, retaining ring 12, positional cylinder 13, hydraulicefficiency pipe 14, returning spring 15, hydraulic hold-down 16, weight-bearing caliper 17 and well heater 18 and constitute.
Expansion pipe series is formed by connecting by some expansion pipes, wherein descend between expansion pipe 5 and the adjacent upper expansion pipe 10 or between other expansion pipe and the expansion pipe, with the shape memory joint (iron-base marmem, for example, the chemistry weight percent is formed: C 0.045, Mn 27.8, and Cr 4.98, and Si 5.21, P 0.02, S 0.02, and surplus is Fe) 8 connections, see Fig. 4 right part enlarged view.The shape memory joint embeds when connecting and is connected the expansion pipe end and docks in the formed annular recesses, the shape memory joint inboard with expansion pipe outside between sealing-ring 9 is housed.Shrink through heating shape memory joint, hold expansion pipe tightly and reach the connection purpose.Expansion pipe hole enlargement inside upper part in bottom is equipped with bullet piston 4, and lower inside is equipped with lower seal awl 2 and guide head 1.The hydraulicefficiency pipe 14 that is threaded into is through bullet piston center, with set screw nut 3 lockings.
Above-mentioned said hydraulicefficiency pipe is located with set collar 6 and centralizer 7, and hydraulicefficiency pipe upper flange garden post can slide in positional cylinder 13 post chambeies.At the positional cylinder middle part circumferential 120 ° of three pairs of hydraulic hold-downs 16 and returning spring 15 are housed, but weight-bearing caliper 17 clamping liquid pressure pipes 14, the well heater 18 that its top has the shape memory head to use.
Expansion pipe of the present invention has following characteristics:
Utilize shape memory effect to connect expansion pipe, be about to sealing-ring and be inserted in the small diameter part branch that is connected the expansion pipe end, shrink by heating shape memory joint, the crush seal circle forms the three-dimensional compressive stress state, thereby improves boundary strength, can transmit huge axial force.Sealing ring material is to have high-ductility metal (for example red copper), is subjected to producing small rheology after the strong extruding of shape memory joint, makes slight void up and plays sealing function.Shape-memory material is an iron-base marmem.Sealing ring material is a red copper.
The strong plasticizing process of the timeliness of expansion pipe alloy is: 1000-1200 ℃ of solid solution shrend in 1 hour, 400-900 ℃ of 0.5-10 hour timeliness, improve dispersion-strengthened effect, strengthening the stacking fault energy that has also reduced material matrix simultaneously, produce better phase change induction plasticity effect like this.
The bullet piston should be pressed into the extension diameter section top of bottom expansion pipe in advance, assembles the lower seal awl then, and is unblocked to guarantee the expansion pipe passage.
The power that the bullet piston moves upward is to rely on the bottom hydraulic to promote or the upwards pulling of dependence hydraulicefficiency pipe, perhaps adopts the comprehensive action that not only pushes away but also draw.For preventing the relative sleeve pipe slippage of expansion pipe, expanding begins promptly to pressurize, and to outer process, it is extremely fixing to block the internal surface of sleeve pipe anchor behind the water conservancy anchor pressurized; Under the returning spring effect, the water conservancy anchor is kept in the center automatically during release.
Application Example:
Carry out the well workover construction with bulged tube technology, the solid expansion pipe (SET) of specification φ 107.95mm * 6.35mm is used repaired existence cavity, many places and crackle well section.Former casing: 139.4mm * 7.7mm, the degree of depth: 2884.44 meters, former well internal diameter: 124mm is dark under the expansion pipe: 1666-1882m, at the bottom of the expansion pipe: 1880.66m; Single tube is long: 7.8m, radical: 10; Expansion pipe range: 78.26m; Expansion pipe external diameter: φ 108mm; Internal diameter: φ 95mm; Wall thickness: 6.5mm; Connect: shape memory shrinks (red copper sealing); Well workover is superior in quality, and output is very stable.Concrete construction correlation parameter is with reference to as follows:
| Before the installation | After the expansion | ||
| Pressure pipe body critical external compressive resistance in grade of steel yield stress weight external diameter internal diameter latus rectum wall thickness piston footpath body is anti- | SP-08 560MPa(80,000ksi) 16.5Kg/m 108mm(4.25”) 95mm(3.74”) 92mm(3.621”) 6.5mm(0.25”) 112.3mm(4.42”) 55MPa 32MPa | Expansion rate yield stress residue percentage elongation external diameter internal diameter latus rectum wall thickness drives the anti-interior pressure pipe body critical external compressive resistance of hydraulic pressure body | 14.8％ 635MPa(90,000ksi) 22％ 124mm(4.88”) 112mm(4.41”) 107.5mm(4.23”) 6mm(0.236”) 25MPa 49MPa 29MPa |
SP08 chemical ingredients (weight percent): C 0.30, and Mn 12.0, and Cr 9.0, and Ni 3.0, and Si 2.0, and V 0.30, and P 0.02, and S 0.02, adds mishmetal RE:0.1 in addition, and surplus is Fe.
Claims (3)
1, a kind of expansion alloy material is characterized in that its weight percent is composed as follows:
C:0.03-0.5; Si:2.0-6.0; Mn:12.0-15; Cr:9.0-20; Ni:3.0-20; N:0.02-0.08; P≤0.03; S≤0.03; Mishmetal RE:0.1; Ti:0-0.8; Zr:0-1.47; Fe: surplus; Simultaneously. requiring to have the total amount of carbide TiC and ZrC carbide volume percentage ratio in the alloy volume is 0.1-1.5%.
2, according to the described expansion alloy material of claim 1, the technology of separating out that it is characterized in that carbide in the described expansion alloy: processing homogenizes in 1000-1200 ℃ temperature range, in 400-900 ℃ temperature range, carried out ageing treatment in 0.5-10 hour then, carbide is separated out.
3, a kind of expansion pipe device, it is characterized in that the expansion pipe in this expansion pipe device is to be made by the described expansion alloy material of claim 1, comprise guide head, lower seal awl, set screw nut, bullet piston, following expansion pipe, set collar, centralizer, shape memory joint, sealing-ring, go up expansion pipe, rubber ring, retaining ring, positional cylinder, hydraulicefficiency pipe, returning spring, hydraulic hold-down, weight-bearing caliper and well heater formation;
Said expansion pipe down and adjacent going up between the expansion pipe or between other expansion pipe and the expansion pipe are held connection tightly with the shape memory joint; Connecting said shape memory joint embeds and is connected the expansion pipe end and docks in the formed annular recesses; Between the said shape memory joint inboard and the expansion pipe outside sealing-ring is arranged; The bullet piston is equipped with on the top of expansion pipe hole enlargement inboard, said bottom, and lower inside is equipped with lower seal awl and guide head; Use through the bullet piston with being threaded into the hydraulicefficiency pipe center, lock with set screw nut again; Said hydraulicefficiency pipe is located with set collar and centralizer, and hydraulicefficiency pipe upper flange garden post can slide in the positional cylinder post; There is the three pairs of hydraulic hold-downs and the returning spring of circumferential 120 ° of dresses that distribute at said positional cylinder middle part; But said weight-bearing caliper clamping liquid pressure pipe; The well heater that said positional cylinder top has heating shape memory joint to use; Be connected with the high-ductility metal o-ring with the iron-base shape memory joint between the said expansion pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410019863 CN1280443C (en) | 2004-07-01 | 2004-07-01 | Expanding metal material and bulged tube device for petroleum oil well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410019863 CN1280443C (en) | 2004-07-01 | 2004-07-01 | Expanding metal material and bulged tube device for petroleum oil well |
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| Publication Number | Publication Date |
|---|---|
| CN1594631A CN1594631A (en) | 2005-03-16 |
| CN1280443C true CN1280443C (en) | 2006-10-18 |
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|---|---|---|---|
| CN 200410019863 Expired - Lifetime CN1280443C (en) | 2004-07-01 | 2004-07-01 | Expanding metal material and bulged tube device for petroleum oil well |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101798658A (en) * | 2010-04-12 | 2010-08-11 | 中国石油天然气集团公司 | 24-30% Mn-containing alloy pipe material and manufacture method thereof |
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-
2004
- 2004-07-01 CN CN 200410019863 patent/CN1280443C/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101798658A (en) * | 2010-04-12 | 2010-08-11 | 中国石油天然气集团公司 | 24-30% Mn-containing alloy pipe material and manufacture method thereof |
| CN101798658B (en) * | 2010-04-12 | 2011-06-22 | 中国石油天然气集团公司 | 24-30% Mn-containing alloy pipe material and manufacture method thereof |
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| Publication number | Publication date |
|---|---|
| CN1594631A (en) | 2005-03-16 |
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