EP1022430A1 - Procédé de destruction d'un isolant thermique rigide disposé dans un espace confiné - Google Patents
Procédé de destruction d'un isolant thermique rigide disposé dans un espace confiné Download PDFInfo
- Publication number
- EP1022430A1 EP1022430A1 EP00400117A EP00400117A EP1022430A1 EP 1022430 A1 EP1022430 A1 EP 1022430A1 EP 00400117 A EP00400117 A EP 00400117A EP 00400117 A EP00400117 A EP 00400117A EP 1022430 A1 EP1022430 A1 EP 1022430A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- insulation
- basic
- organogel
- solution
- insulator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000009413 insulation Methods 0.000 title claims description 32
- 230000006378 damage Effects 0.000 title description 7
- 239000000203 mixture Substances 0.000 claims abstract description 10
- 239000007791 liquid phase Substances 0.000 claims abstract description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- 239000012212 insulator Substances 0.000 claims description 18
- 239000000243 solution Substances 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000003637 basic solution Substances 0.000 claims description 9
- 239000012071 phase Substances 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 5
- 238000005325 percolation Methods 0.000 claims description 4
- 239000000725 suspension Substances 0.000 claims description 4
- 239000012074 organic phase Substances 0.000 claims description 3
- 150000004679 hydroxides Chemical class 0.000 claims description 2
- 239000007787 solid Substances 0.000 abstract description 7
- 238000003980 solgel method Methods 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 17
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 238000011065 in-situ storage Methods 0.000 description 6
- 239000008235 industrial water Substances 0.000 description 5
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 229930195733 hydrocarbon Natural products 0.000 description 4
- 150000002430 hydrocarbons Chemical class 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 239000012267 brine Substances 0.000 description 3
- 239000003129 oil well Substances 0.000 description 3
- 239000002243 precursor Substances 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004111 Potassium silicate Substances 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 239000006230 acetylene black Substances 0.000 description 1
- 239000004964 aerogel Substances 0.000 description 1
- 230000001476 alcoholic effect Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000011066 ex-situ storage Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012456 homogeneous solution Substances 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 125000002524 organometallic group Chemical group 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 description 1
- 229910052913 potassium silicate Inorganic materials 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000000352 supercritical drying Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000001131 transforming effect Effects 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
- E21B29/00—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
- E21B29/02—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground by explosives or by thermal or chemical means
-
- 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
- E21B36/00—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
- E21B36/003—Insulating arrangements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S166/00—Wells
- Y10S166/901—Wells in frozen terrain
Definitions
- the present invention relates to a method of destruction of rigid thermal insulation, and, more particularly, such a rigid insulator put in place around a duct in a confined space, for example a oil well.
- This drop in oil temperature in the production column has the effect of increasing the viscosity and weight of these hydrocarbons, which can cause a slowdown in their flow.
- the a drop in temperature can sometimes cause deposits, on the column wall, paraffin hydrates or vesicles of liquid, for example water. If it accumulates this deposit can cause serious problems in the duct operations such as slowing down hydrocarbons, or even total obstruction of the duct.
- the operator is obliged to deal this deposition phenomenon, either in prevention by injection of chemical inhibiting deposition, either as a curative scraping or scraping the duct with special equipment or by reheating it by a means possibly available. In all cases, these operations constitute a significant expenditure of money.
- This type of problem also present in the conduits which connect a well at a remote treatment center.
- thermal insulation around of a production duct or column allows the temperature of the effluents during their journey, reducing deposits on the column wall and other problems associated with the temperature.
- French patent application No. 9801009 describes a process for preparing an injectable and gelable mixture in situ in a confined space, for example the annular space of a oil well, from a precursor to gel, containing or not solid particles, a solvent of dilution and a gelling catalyst.
- This process includes a first step in which the solvent of dilution and the gelling catalyst are mixed together, and a second step in which the solution resulting is mixed with the precursor to be gelled, the mixture thus obtained being injected into the confined space.
- each of the first and second steps in a static mixer. This process allows, for example, to install an insulating sleeve formed of organogel in situ in the annular space of a well tanker.
- the confined space may also contain insulation thermal consisting of airgel powder or xerogels synthesized ex situ and introduced into space confined, for example by means of a dosing screw of powdery. It may also contain aerogels synthesized in situ as described in the document FR 9513601.
- the present invention therefore relates to a method of destruction of a rigid insulation placed in a space confined which is simple and effective and which ensures that the insulation can be removed completely from the space it filled.
- the invention proposes a process for destroying a rigid insulator, obtained by a sol-gel type process, and placed in a confined space, the method comprising the step of introducing into space confined a basic dissolving liquid in order to transform insulating it into a liquid phase.
- the present invention more particularly allows destroy rigid insulation made of organogel or airgel by replacing a rigid phase with a phase low viscosity liquid.
- a particular application of the invention relates to the destruction of a thermal insulator contained in the annular space of a production well of hydrocarbons.
- an oil well 10 includes a production column 12 extending between a well head 14, disposed on the surface of the ground 16 or, possibly on a platform at sea, and a layer of petroleum rock 18.
- the production column includes a device 22 allowing the circulation of fluids.
- Annular space 24 defined between a casing 26, which forms the wall of the well, and the production column 12, is delimited by the head of well 14 and the seal 20. This annular space is filled a rigid insulation obtained, for example, by a process of sol-gel type.
- Rigid insulation placed in annular space 24 can be formed from an organogel, an airgel, or a xerogel.
- organogel we means a micro-porous solid, the preparation of which powder or monoliths usually involves a step of supercritical drying, and by organogel is meant by example all the materials resulting from synthesis of the type sol-gel from organo-metallic precursors but not dried.
- xerogel designates porous solids from of a sol gel process but dried without using a supercritical process.
- a tank 28 intended to contain a basic dissolving liquid.
- basic dissolving liquid we generally mean solutions of NaOH but it can be used solutions of KOH, ammonia (NH 4 OH) and to a lesser extent solutions or suspensions of alkaline earth hydroxides (Ca (OH) 2 or Mg (OH) 2.
- conduit 36 fitted with a control valve 38, opens, through the well head 14, into the production column 12.
- the dissolving liquid fills the interior of the production column, then passes through the device 22 towards the annular space 24.
- the liquid mixture, leaving the annular space passes through a conduit 40, provided with a valve 42 towards a storage tank 44.
- a conduit 46 allows the liquid to be recycled at a point upstream of the pump 32.
- This installation allows, according to the method of the invention, to introduce liquid into the annular space from tank 28 and recover the liquid mixture resulting from the destruction of the rigid insulation contained in annular space.
- the volume filled with insulation thermal to be destroyed consists of an annular space composed of an external cylindrical tube of internal diameter 150mm in vertical position, itself containing concentrically a tube of external diameter 70mm, the whole having a height of 1.2m.
- the annular space delimited by these two tubes had been filled with a mixture having gelled in if you.
- This filling had been carried out in the manner next: in a first tank we make a first mixture consisting of 7.2 kg of ethanol which is added under stirring 100g of aqueous hydrofluoric acid solution at 48% mass.
- This homogeneous solution is transferred to a second stirred tank previously containing 8.3 kg of polyethoxysilane HYDROSIL (ASTE) ® from the company PCAS.
- ASTE polyethoxysilane HYDROSIL
- the annular space described in example 1 was filled with silica airgel powder over a height of 0.7 meters. This powder was produced using a sol-gel process and drying with super-critical CO 2 .
- the destruction of this rigid insulation was carried out as follows: 9 liters of a 4 mol / l sodium hydroxide solution are injected by pumping through a heat exchanger at 45 ° C. in the upper part of the space annular. Once the soda in place we waited 18 hours. At the end of this period of time, it was noted the absence of solid in the annular space, the solid having been completely dissolved, giving way to a basic brine. As in Example 1, this was replaced by industrial water. At the end of the operation, the initial rigid insulation was replaced by industrial water.
- the volume filled with thermal insulation to be destroyed is constituted by an annular space located between a vertical external tube of internal diameter of 6 "5/8 (168mm) and a concentric internal tube of external diameter 3" 1/2 (88.9mm) all with a length of 10m.
- annular space was synthesized beforehand in situ a silica airgel monolith loaded with acetylene black ("carbon black"). The operation of destroying the thermal insulator was carried out as described below.
- a 500 l container containing 300 l of sodium solution (NaOH 4 mole / l) is withdrawn using a pump 32, 1m 3 / h of sodium hydroxide solution which is passed through a heat exchanger at 60 ° C then pass from top to bottom of the tube 12 and go back up into the annular space 24 after having crossed the valve 22 to come out at the top of the annular and finally join the tank 28.
- thermal insulation can be placed in the annular on the basis of a silica organogel, without any drying by CO 2 .
- the solution consists in evaporating all or part of the solvent for impregnating the organogel, which results in the in situ manufacture of a Xerogel, thus freeing up an empty space throughout the casing (annular dimension) due to the simple shrinkage due to drying in non-critical conditions of the solvent.
- a basic solution for example sodium hydroxide, is introduced from the top of the ring finger in order to dissolve the silica in situ, without the need to circulate the basic solution.
- the ring finger will then contain a sodium or potassium silicate brine depending on the base used.
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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)
- Chemical Kinetics & Catalysis (AREA)
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Silicon Compounds (AREA)
- Thermal Insulation (AREA)
- Secondary Cells (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Insulating Bodies (AREA)
- Processing Of Solid Wastes (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Refrigerator Housings (AREA)
Abstract
Description
- premièrement, à faire percoler du bas vers le haut dans l'espace annulaire de l'eau à raison de 200 l/h afin d'extraire le maximum de phase alcoolique durant 15 minutes.
- deuxièmement, on injecte au moyen d'une pompe, une solution de soude à 4 moles par litre à partir d'un bac renfermant 18 litres de solution sodique. Cette solution passe au travers d'un échangeur de chaleur à 40°C avant de pénétrer dans l'annulaire de bas en haut à raison de 210 l/h. Le liquide effluent en tête de l'annulaire est renvoyé dans le bac de soude établissant ainsi un tourne en rond. Au bout de 2 heures de percolation continue avec recyclage, l'isolant rigide contenu dans l'espace annulaire est totalement éliminé et ne contient plus qu'une saumure basique. Celle-ci est alors remplacée par de l'eau brute. En fin d'opération l'isolant rigide initial a été substitué par de l'eau industrielle.
On peut envisager afin de détruire un isolant formé d'un organogel, de faire percoler à travers l'isolant une solution basique, le procédé comportant une étape additionnelle préalable de percolation d'eau extrayant ainsi une partie de la phase organique de l'isolant.
On peut également envisager, afin de détruire un isolant formé d'un organogel, de faire percoler à travers l'isolant une solution basique, le procédé comportant une étape additionnelle préalable de percolation d'eau préchauffée par passage au travers d'un échangeur de chaleur extrayant ainsi une partie de la phase organique de l'isolant. On peut enfin envisager, afin de détruire un isolant formé d'un organogel, et en préalable à l'introduction d'une solution basique dissolvant l'isolant, une étape de séchage de l'organogel en xérogel.
Claims (9)
- Procédé de destruction d'un isolant rigide, obtenu par un procédé du type sol-gel, et disposé dans un espace confiné, le procédé comportant l'étape d'introduire dans l'espace confiné un liquide basique dissolvant afin de transformer l'isolant en une phase liquide.
- Procédé selon la revendication 1, caractérisé en ce que le procédé comporte l'étape additionnelle consistant à faire percoler à travers l'isolant une solution basique préalablement chauffée par circulation au travers d'un échangeur de chaleur.
- Procédé selon la revendication 1, caractérisé en ce que le procédé comporte l'étape additionnelle consistant à faire percoler à travers l'isolant une solution basique qui est recyclée à travers un échangeur de chaleur.
- Procédé selon la revendication 1, caractérisé en ce que, afin de détruire un isolant formé d'un organogel, on fait percoler à travers l'isolant une solution basique, le procédé comportant une étape additionnelle préalable de percolation d'eau extrayant ainsi une partie de la phase organique de l'isolant.
- Procédé selon la revendication 1, caractérisé en ce que, afin de détruire un isolant formé d'un organogel, on fait percoler à travers l'isolant une solution basique, le procédé comportant une étape additionnelle préalable de percolation d'eau préchauffée par passage au travers d'un échangeur de chaleur extrayant ainsi une partie de la phase organique de l'isolant.
- Procédé selon la revendication 1, caractérisé en ce que, afin de détruire un isolant formé d'un organogel, le procédé comporte en préalable à l'introduction d'une solution basique dissolvant l'isolant, une étape de séchage de l'organogel en xérogel.
- Procédé selon l'une des revendications précédentes, caractérisé en ce que le procédé comporte l'étape additionnelle consistant à mettre le liquide basique dissolvant sous pression lors de l'introduction dans l'espace confiné.
- Procédé selon l'une des revendications précédentes, caractérisé en ce que le procédé comporte l'étape additionnelle de rincer l'espace confiné par de l'eau.
- Procédé selon l'une des revendications précédentes, caractérisé en ce que le liquide basique est choisi dans le groupe composé de NaOH, KOH, (NH4OH) et de solution ou suspension d'hydroxydes alcalino terreux Ca(OH)2 ou Mg(OH)2 seul ou en mélange.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9900584 | 1999-01-20 | ||
| FR9900584A FR2788451B1 (fr) | 1999-01-20 | 1999-01-20 | Procede de destruction d'un isolant thermique rigide dispose dans un espace confine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1022430A1 true EP1022430A1 (fr) | 2000-07-26 |
| EP1022430B1 EP1022430B1 (fr) | 2005-03-30 |
Family
ID=9541037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00400117A Expired - Lifetime EP1022430B1 (fr) | 1999-01-20 | 2000-01-18 | Procédé de destruction d'un isolant thermique rigide disposé dans un espace confiné |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US6328110B1 (fr) |
| EP (1) | EP1022430B1 (fr) |
| AT (1) | ATE292231T1 (fr) |
| BR (1) | BR0000534A (fr) |
| CA (1) | CA2296978C (fr) |
| DE (1) | DE60019001D1 (fr) |
| FR (1) | FR2788451B1 (fr) |
| NO (1) | NO316085B1 (fr) |
| OA (1) | OA11280A (fr) |
| RU (1) | RU2233964C2 (fr) |
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| US9347119B2 (en) | 2011-09-03 | 2016-05-24 | Baker Hughes Incorporated | Degradable high shock impedance material |
| US9284812B2 (en) | 2011-11-21 | 2016-03-15 | Baker Hughes Incorporated | System for increasing swelling efficiency |
| US9010416B2 (en) | 2012-01-25 | 2015-04-21 | Baker Hughes Incorporated | Tubular anchoring system and a seat for use in the same |
| US9068428B2 (en) | 2012-02-13 | 2015-06-30 | Baker Hughes Incorporated | Selectively corrodible downhole article and method of use |
| US9605508B2 (en) | 2012-05-08 | 2017-03-28 | Baker Hughes Incorporated | Disintegrable and conformable metallic seal, and method of making the same |
| US9816339B2 (en) | 2013-09-03 | 2017-11-14 | Baker Hughes, A Ge Company, Llc | Plug reception assembly and method of reducing restriction in a borehole |
| CN104696668A (zh) * | 2013-12-04 | 2015-06-10 | 陈小磊 | 一种液氯加热保温管 |
| WO2015127174A1 (fr) | 2014-02-21 | 2015-08-27 | Terves, Inc. | Système métallique de désintégration à activation par fluide |
| US10689740B2 (en) | 2014-04-18 | 2020-06-23 | Terves, LLCq | Galvanically-active in situ formed particles for controlled rate dissolving tools |
| US11167343B2 (en) | 2014-02-21 | 2021-11-09 | Terves, Llc | Galvanically-active in situ formed particles for controlled rate dissolving tools |
| US9910026B2 (en) | 2015-01-21 | 2018-03-06 | Baker Hughes, A Ge Company, Llc | High temperature tracers for downhole detection of produced water |
| US10378303B2 (en) | 2015-03-05 | 2019-08-13 | Baker Hughes, A Ge Company, Llc | Downhole tool and method of forming the same |
| US10221637B2 (en) | 2015-08-11 | 2019-03-05 | Baker Hughes, A Ge Company, Llc | Methods of manufacturing dissolvable tools via liquid-solid state molding |
| US10016810B2 (en) | 2015-12-14 | 2018-07-10 | Baker Hughes, A Ge Company, Llc | Methods of manufacturing degradable tools using a galvanic carrier and tools manufactured thereof |
| CA3012511A1 (fr) | 2017-07-27 | 2019-01-27 | Terves Inc. | Composite a matrice metallique degradable |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4296814A (en) * | 1980-07-18 | 1981-10-27 | Conoco Inc. | Method for thermally insulating wellbores |
| US5271466A (en) * | 1992-10-30 | 1993-12-21 | Halliburton Company | Subterranean formation treating with dual delayed crosslinking gelled fluids |
| FR2741420A1 (fr) * | 1995-11-16 | 1997-05-23 | Elf Aquitaine | Systeme d'isolation thermique et/ou acoustique d'un conduit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA916049A (en) * | 1972-12-05 | W. Clegg Michael | Oil well | |
| US3613792A (en) * | 1969-12-11 | 1971-10-19 | British Petroleum Co | Oil well and method for production of oil through permafrost zone |
| US3880236A (en) * | 1972-08-09 | 1975-04-29 | Union Oil Co | Method and apparatus for transporting hot fluids through a well traversing a permafrost zone |
| US3958639A (en) * | 1974-06-28 | 1976-05-25 | Daniel Arlie H | Method of drilling an oil well to recover casings |
-
1999
- 1999-01-20 FR FR9900584A patent/FR2788451B1/fr not_active Expired - Fee Related
-
2000
- 2000-01-18 DE DE60019001T patent/DE60019001D1/de not_active Expired - Lifetime
- 2000-01-18 EP EP00400117A patent/EP1022430B1/fr not_active Expired - Lifetime
- 2000-01-18 AT AT00400117T patent/ATE292231T1/de not_active IP Right Cessation
- 2000-01-19 BR BR0000534-7A patent/BR0000534A/pt not_active IP Right Cessation
- 2000-01-19 RU RU2000101727/03A patent/RU2233964C2/ru not_active IP Right Cessation
- 2000-01-19 CA CA002296978A patent/CA2296978C/fr not_active Expired - Fee Related
- 2000-01-20 NO NO20000287A patent/NO316085B1/no not_active IP Right Cessation
- 2000-01-20 OA OA1200000015A patent/OA11280A/fr unknown
- 2000-01-20 US US09/488,077 patent/US6328110B1/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4296814A (en) * | 1980-07-18 | 1981-10-27 | Conoco Inc. | Method for thermally insulating wellbores |
| US5271466A (en) * | 1992-10-30 | 1993-12-21 | Halliburton Company | Subterranean formation treating with dual delayed crosslinking gelled fluids |
| FR2741420A1 (fr) * | 1995-11-16 | 1997-05-23 | Elf Aquitaine | Systeme d'isolation thermique et/ou acoustique d'un conduit |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2788451A1 (fr) | 2000-07-21 |
| BR0000534A (pt) | 2000-10-17 |
| EP1022430B1 (fr) | 2005-03-30 |
| NO316085B1 (no) | 2003-12-08 |
| US6328110B1 (en) | 2001-12-11 |
| ATE292231T1 (de) | 2005-04-15 |
| FR2788451B1 (fr) | 2001-04-06 |
| CA2296978C (fr) | 2007-09-25 |
| CA2296978A1 (fr) | 2000-07-20 |
| DE60019001D1 (de) | 2005-05-04 |
| NO20000287L (no) | 2000-07-21 |
| OA11280A (fr) | 2003-07-31 |
| RU2233964C2 (ru) | 2004-08-10 |
| NO20000287D0 (no) | 2000-01-20 |
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