WO2015094897A1 - Method for reducing permeability of downhole motor protector bags - Google Patents
Method for reducing permeability of downhole motor protector bags Download PDFInfo
- Publication number
- WO2015094897A1 WO2015094897A1 PCT/US2014/069713 US2014069713W WO2015094897A1 WO 2015094897 A1 WO2015094897 A1 WO 2015094897A1 US 2014069713 W US2014069713 W US 2014069713W WO 2015094897 A1 WO2015094897 A1 WO 2015094897A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- substrate
- roller
- layer
- polymer film
- seal bag
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000035699 permeability Effects 0.000 title description 4
- 230000001012 protector Effects 0.000 title description 2
- 229920006254 polymer film Polymers 0.000 claims abstract description 51
- 229910052751 metal Inorganic materials 0.000 claims abstract description 47
- 239000002184 metal Substances 0.000 claims abstract description 47
- 239000000758 substrate Substances 0.000 claims abstract description 46
- 239000010410 layer Substances 0.000 claims abstract description 44
- 239000012790 adhesive layer Substances 0.000 claims abstract description 30
- 238000005086 pumping Methods 0.000 claims abstract description 30
- 229920000642 polymer Polymers 0.000 claims abstract description 28
- 238000005096 rolling process Methods 0.000 claims abstract description 10
- 239000011247 coating layer Substances 0.000 claims description 21
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 12
- 150000002739 metals Chemical class 0.000 claims description 10
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 9
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 9
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 6
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 6
- 239000010931 gold Substances 0.000 claims description 6
- 229910052737 gold Inorganic materials 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- 229910052709 silver Inorganic materials 0.000 claims description 6
- 239000004332 silver Substances 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010936 titanium Substances 0.000 claims description 6
- 229910052719 titanium Inorganic materials 0.000 claims description 6
- 238000001465 metallisation Methods 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000011888 foil Substances 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims 2
- 239000012530 fluid Substances 0.000 description 10
- 229920001774 Perfluoroether Polymers 0.000 description 9
- 239000000463 material Substances 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000000314 lubricant Substances 0.000 description 4
- 229910001092 metal group alloy Inorganic materials 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 3
- 239000004800 polyvinyl chloride Substances 0.000 description 3
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 2
- 238000010796 Steam-assisted gravity drainage Methods 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 229920006397 acrylic thermoplastic Polymers 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229920002313 fluoropolymer Polymers 0.000 description 1
- 239000004811 fluoropolymer Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- ISXSCDLOGDJUNJ-UHFFFAOYSA-N tert-butyl prop-2-enoate Chemical compound CC(C)(C)OC(=O)C=C ISXSCDLOGDJUNJ-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/128—Adaptation of pump systems with down-hole electric drives
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
- F04B47/06—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps having motor-pump units situated at great depth
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
- B29C63/02—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using sheet or web-like material
- B29C63/04—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using sheet or web-like material by folding, winding, bending or the like
- B29C63/12—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using sheet or web-like material by folding, winding, bending or the like by winding spirally
- B29C63/14—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using sheet or web-like material by folding, winding, bending or the like by winding spirally around tubular articles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
- F04D13/10—Units comprising pumps and their driving means the pump being electrically driven for submerged use adapted for use in mining bore holes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
- B29C63/26—Lining or sheathing of internal surfaces
- B29C63/30—Lining or sheathing of internal surfaces using sheet or web-like material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
- B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
- B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
- B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
- B29C65/4825—Pressure sensitive adhesives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
- B29C65/483—Reactive adhesives, e.g. chemically curing adhesives
- B29C65/4835—Heat curing adhesives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
- B29C66/1122—Single lap to lap joints, i.e. overlap joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/53—Joining single elements to tubular articles, hollow articles or bars
- B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
- B29C66/5326—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially flat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/61—Joining from or joining on the inside
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
- B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
- B29C66/7232—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer
- B29C66/72321—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer consisting of metals or their alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
- B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
- B29C66/7234—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a barrier layer
- B29C66/72343—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a barrier layer for liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
- B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
- B29C66/83411—Roller, cylinder or drum types
- B29C66/83413—Roller, cylinder or drum types cooperating rollers, cylinders or drums
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2009/00—Layered products
- B29L2009/003—Layered products comprising a metal layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/005—Hoses, i.e. flexible
- B29L2023/006—Flexible liners
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/748—Machines or parts thereof not otherwise provided for
- B29L2031/7496—Pumps
Definitions
- This invention relates generally to the field of submersible pumping systems, and more particularly, but not by way of limitation, to a method for reducing the permeability of a seal bag within a submersible pumping system.
- Submersible pumping systems are often deployed into wells to recover petroleum fluids from subterranean reservoirs.
- the submersible pumping system includes a number of components, including one or more fluid filled electric motors coupled to one or more high performance pumps.
- Each of the components and sub-components in a submersible pumping system must be engineered to withstand the inhospitable downhole environment, which includes wide ranges of temperature, pressure and corrosive well fluids.
- seal sections protect the electric motors and are typically positioned between the motor and the pump. In this position, the seal section provides several functions, including transmitting torque between the motor and pump, restricting the flow of wellbore fluids into the motor, protecting the motor from axial thrust imparted by the pump, and accommodating the expansion and contraction of motor lubricant as the motor moves through thermal cycles during operation.
- seal sections employ seal bags to accommodate the volumetric changes and movement of fluid in the seal section.
- PFA fluoropolymers tubing has become a material of choice for seal bags.
- the use of PFA as the material of construction in seal bags is disclosed in United States Patent No. 8,246,326 issued August 21, 2012 and assigned to GE Oil & Gas ESP, Inc.
- the present invention provides a method for applying a metalized polymer coating to the substrate of a PFA material of a seal bag for use in a downhole submersible pumping system.
- the method includes the steps of applying a metal layer to a polymer layer, applying an adhesive layer to the polymer layer or the metal layer, and rolling the adhesive layer onto a substrate of the seal bag.
- the method may also include the steps of rotating a first roller, which is located above the polymer layer of the metalized polymer film, and rotating a second roller, which is located on an interior surface of the substrate of the seal bag, in the opposite direction of the first roller. Heat or pressure can be used to assist in the adherence of the metalized polymer coating to the substrate of the seal bag.
- the polymer layer of the metalized polymer coating preferably comprises a PTFE polymer.
- FIG. 1 is an elevational view of a submersible pumping system constructed in accordance with a presently preferred embodiment.
- FIG. 2 is a cross-sectional view of a first preferred embodiment of a seal section for use with the submersible pumping system of FIG. 1.
- FIG. 3 is a perspective view of a first preferred embodiment of the seal bag of FIG. 2.
- FIG. 4 is a cross-sectional view of a substrate constructed in accordance with a presently preferred embodiment.
- FIG. 5 is a cross-sectional view of the substrate of FIG. 4 being applied to the seal bag of FIG. 3 in accordance with a presently preferred embodiment.
- FIG. 6 is a cross-sectional view of a second alternative version of the substrate of FIG. 4 being applied to the seal bag of FIG. 3.
- FIG. 7 is a cross-sectional view of a substrate constructed in accordance with an alternate preferred embodiment.
- FIG. 8 is a cross-sectional view of a substrate constructed in accordance with an alternate preferred embodiment.
- FIG. 9 is a cross-sectional view of a metalized polymer film applied to the interior of the seal bag.
- FIG. 10 is a cross-sectional view of a metalized polymer film applied to the interior and exterior of the seal bag.
- FIG. 1 shows an elevational view of a pumping system 100 attached to production tubing 102.
- the pumping system 100 and production tubing 102 are disposed in a wellbore 104, which is drilled for the production of a fluid such as water or petroleum.
- a fluid such as water or petroleum.
- the term "petroleum” refers broadly to all mineral hydrocarbons, such as crude oil, gas and combinations of oil and gas.
- the production tubing 102 connects the pumping system 100 to a wellhead 106 located on the surface.
- the pumping system 100 is primarily designed to pump petroleum products, it will be understood that the present invention can also be used to move other fluids. It will also be understood that, although each of the components of the pumping system are primarily disclosed in a submersible application, some or all of these components can also be used in surface pumping operations.
- the pumping system 100 preferably includes some combination of a pump assembly 108, a motor assembly 1 10 and a seal section 112.
- the motor assembly 1 10 is preferably an electrical motor that receives power from a surface-mounted motor control unit (not shown). When energized, the motor assembly 110 drives a shaft that causes the pump assembly 108 to operate.
- the seal section 1 12 shields the motor assembly 110 from mechanical thrust produced by the pump assembly 108 and provides for the expansion of motor lubricants during operation.
- the seal section 1 12 also isolates the motor assembly 1 10 from the wellbore fluids passing through the pump assembly 108. Although only one of each component is shown, it will be understood that more can be connected when appropriate. It may be desirable to use tandem-motor combinations, multiple seal sections, multiple pump assemblies or other downhole components not shown in FIG. 1.
- the seal section 1 12 includes a housing 1 14, a shaft 116, a seal bag 118, a support tube 120 and first and second bag plates 122a, 122b.
- the seal bag 118 is configured to prevent the contamination of clean motor lubricants with wellbore fluids.
- the shaft 116 transfers mechanical energy from the motor assembly 110 to the pump assembly 108.
- the bag support tube 120 provides support for the seal bag 1 18 and shields the shaft 1 16 as its passes through the seal bag 1 18.
- the terms "bag seal assembly” will refer to the seal bag 1 18, the bag support tube 120 and the first and second bag plates 122a, 122b.
- the seal section 1 12 may also include seal guides 124, a plurality of ports 126 and one or more o-ring seals 128.
- the o-ring seals 128 are located at various positions within the seal section 112 and limit the migration of contaminants and well fluids into the clean lubricant.
- the bag seal assembly is disclosed as contained within the seal section 1 12. It will be understood, however, that the bag seal assembly could be installed elsewhere in the pumping system 100. For example, it may be desirable to integrate the bag seal assembly within the motor assembly 1 10 or pump assembly 108.
- the seal bag 1 18 preferably includes a substrate 130, a first end 132 and a second end 134.
- the substrate 130 is substantially configured as an elongated cylinder with an interior surface 136 and an exterior surface 138.
- the substrate 130 is fabricated from an elastomer or other polymer, such as, for example PTFE, PFA, or polyvinyl chloride (PVC).
- the substrate 130 is constructed from extruded PFA.
- the metalized polymer film 140 includes a metal coating layer 142, a polymer film layer 144 and an adhesive layer 146.
- Presently preferred metals to be used in the metal coating layer 142 include titanium, stainless steel, nickel, aluminum, chrome, silver and gold, and alloys for each of these metals. It will be appreciated that the metal coating layer 142 may be produced with combinations of multiple metals and metal alloys. It will also be understood that in alternate preferred embodiments, the metal coating layer 142 may consist of multilayered coatings with two or more metal coating layers 142 and that each metal coating layer 142 may be prepared using different metals and metal alloys.
- the metal coating layer 142 constitutes a metal foil that is suitable for adherence to adjacent layers of the polymer film layer 144.
- the metal coating layer includes a metal deposition layer applied to a substrate. The deposition layer may be achieved through sputtering and vacuum metallization.
- the polymer film layer 144 is fabricated from an elastomer or other polymer, such as, for example PTFE, PFA, or PVC. In preferred embodiments, the polymer film layer 144 is fabricated from PTFE with a thickness of 0.001 inches to 0.005 inches.
- Presently preferred adhesives utilized as the adhesive layer 146 include heat sensitive or pressure sensitive adhesives, and may consist of any known adhesives suitable in such applications, such as silicones, epoxies, polyurethanes, acrylics, and polyimides.
- the metalized polymer film 140 is depicted so that the adhesive layer 146 is joined to the polymer film layer 144, it will be understood that in alternate preferred embodiments, the adhesive layer 146 may be joined to the metal coating layer 142.
- FIG. 5 shown therein is a cross sectional view of the metalized polymer film 140 being applied to the substrate 130 of the seal bag 1 18.
- the metalized polymer film 140 is applied to the seal bag 1 18 by rolling the seal bag 1 18 about its axis and applying the metalized polymer film 140 so that the adhesive layer 146 is in contact with the exterior surface 138 of the substrate 130 of the seal bag 1 18.
- the metalized polymer film 140 is wrapped around the seal bag 118 a number of times to create several overlapping layers of metalized polymer film 140 around the seal bag 1 18.
- the metalized polymer film 140 is applied to the substrate 130 of the seal bag 1 18 by rolling the metalized polymer film 140 and the seal bag 1 18 between a first mandrel 148 positioned above the metalized polymer film 140 and a second mandrel 150 positioned on the interior surface 136 of the seal bag 1 18.
- the first mandrel 148 rotates in one direction and the second mandrel 150 rotates in the opposite direction to move the metalized polymer film 140 and the substrate 130 of the seal bag 118 between the first mandrel 148 and the second mandrel 150.
- the first mandrel 148 and the second mandrel 150 can alternatively be used to apply the requisite pressure if a pressure sensitive adhesive is used for the adhesive layer 146 of the metalized polymer film 140. In an alternative preferred embodiment, if a heat sensitive adhesive is used for the adhesive layer 146 of the metalized polymer film 140, then the one or both of the first mandrel 148 and second mandrel 150 can be heated.
- metalized polymer film 140 could be built up around the circumference of the seal bag 1 18 through continuous application of the metalized polymer film around the circumference of the seal bag 1 18. Multiple layers of metalized polymer film 140 provide more protection from handling of the seal bag 1 18 and the multiple polymer film layers 144 protect the thin metal film layers 142. It will be further understood that if a heat sensitive adhesive is used for the adhesive layer 146 of the metalized polymer film 140, then after the desired layers of metalized polymer film 140 are applied to the seal bag 118 of FIGS. 5 or 6, an oven can be utilized to cure the adhesive.
- FIG. 7 shown therein is an alternate embodiment of the metalized polymer film 140.
- the metal coating layer 142 is located between the exterior polymer film layer 144 and the interior adhesive layer 146.
- Presently preferred metals to be used in the metal coating layer 142 include titanium, stainless steel, nickel, aluminum, chrome, silver and gold, and alloys for each of these metals. It will be appreciated that the metal coating layer 142 may be produced with combinations of multiple metals and metal alloys. It will also be understood that in alternate preferred embodiments, the metal coating layer 142 may consist of multilayered coatings with two or more metal coating layers 142 and that each metal coating layer 142 may be prepared using different metals and metal alloys. [030] Turning to FIG.
- the adhesive layer 146 is manufactured from a heat-fusable polymer. Suitable polymers include PEEK, PTFE, and PVC. In a particularly preferred embodiment, the adhesive layer is manufactured from the same polymer used for the polymer film layer 144. During application to the seal bag 118, the application of heat to the adhesive layer 146 fuses the polymer in the adhesive layer 146 to the bag substrate 130.
- FIG. 9 shown therein is yet another preferred embodiment in which the metalized polymer film 140 is applied to the interior surface 136 of the substrate 130.
- the metalized polymer film 140 can either be applied directly to the interior surface 136 of the substrate 130 or applied to the exterior surface 138 of the substrate and then turned inside-out to present the metalized polymer film 140 on the inside of the seal bag 118.
- the metalized polymer film 140 is applied to both interior surface 136 and the exterior surface 138 of the substrate using the manufacturing techniques disclosed herein.
- the interior metalized polymer film 140 has an external metal coating layer 142 and the exterior metalized polymer film 140 has an external polymer film layer. It will be appreciated the embodiment depicted in FIG. 10 is merely exemplary and that additional combinations and variations of the metalized polymer film 140 are within the scope of preferred embodiments.
- the process of applying metalized polymer film 140 to the seal bag 1 18 reduces the risk of water permeation into the motor assembly 110, and protects high temperature motor insulation materials, reduces motor winding shorts, and provides better lubrication characteristics. It will be also be understood that the novel process of applying metalized polymers to PFA substrates will find application in other downhole components, including, for example, mechanical seal bellows and pothead connectors.
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Abstract
A method for applying a metalized polymer film (140) to a seal bag (118) for use in a downhole submersible pumping system includes the steps of applying a metal layer (142) to a polymer layer (144), applying an adhesive layer (146) to the polymer layer (144), and rolling the adhesive layer (146) onto a substrate of the seal bag (118). The method may also include the steps of rotating a first roller, which is located above the polymer layer of the metalized polymer film (140), and rotating a second roller, which is located on an interior surface of the substrate of the seal bag, in the opposite direction of the first roller. Also disclosed is a downhole pumping system that incorporates a seal bag (118) manufactured from these techniques.
Description
METHOD FOR REDUCING PERMEABILITY OF DOWNHOLE MOTOR
PROTECTOR BAGS
RELATED APPLICATIONS
[001] The present application is a continuation-in-part of United States Patent Application Serial No. 13/687,862, filed November 28, 2012, entitled "Metalized Polymer Components for Use in High Temperature Pumping Applications," the disclosure of which is incorporated herein.
FIELD OF THE INVENTION
[002] This invention relates generally to the field of submersible pumping systems, and more particularly, but not by way of limitation, to a method for reducing the permeability of a seal bag within a submersible pumping system.
BACKGROUND
[003] Submersible pumping systems are often deployed into wells to recover petroleum fluids from subterranean reservoirs. Typically, the submersible pumping system includes a number of components, including one or more fluid filled electric motors coupled to one or more high performance pumps. Each of the components and sub-components in a submersible pumping system must be engineered to withstand the inhospitable downhole environment, which includes wide ranges of temperature, pressure and corrosive well fluids.
[004] Components commonly referred to as "seal sections" protect the electric motors and are typically positioned between the motor and the pump. In this position, the seal section provides several functions, including transmitting torque between the motor and pump, restricting the flow of wellbore fluids into the motor, protecting the motor from axial thrust imparted by the pump, and accommodating the expansion and contraction of motor lubricant as the motor moves through thermal cycles during
operation. Many seal sections employ seal bags to accommodate the volumetric changes and movement of fluid in the seal section.
[005] As the use of downhole pumping systems extends to new applications, traditional seal bags may not be suitable. For example, the use of downhole pumping systems in combination with steam assisted gravity drainage (SAGD) technology exposes seal bag components to temperature in excess of 500 °F. Of particular concern is the potential for liquid water permeation through the seal bags at these extreme temperatures. In particular, water ingress into the electric motor can affect the preferred properties of the motor, such as favorable lubrication, dielectric and chemical compatibility. To increase the resistance of the seal bag to degradation under these increasingly hostile environments, manufacturers have employed durable polymers, including various forms of polytetrafluoroethylene (PTFE), as the preferred material of construction. More recently, extruded perfluoroalkoxy (PFA) fluoropolymers tubing has become a material of choice for seal bags. The use of PFA as the material of construction in seal bags is disclosed in United States Patent No. 8,246,326 issued August 21, 2012 and assigned to GE Oil & Gas ESP, Inc.
[006] Although generally effective, PFA and many other elastomeric and polymeric materials are nonetheless susceptible to water ingress due to transmission by permeation or diffusion through the material at extremely high temperatures. There is, therefore, a need for a method of further reducing the permeability of the seal bag, seal sections and submersible pumping systems. It is to this and other needs that the present invention is directed.
SUMMARY OF THE INVENTION
[007] In a preferred embodiment, the present invention provides a method for applying a metalized polymer coating to the substrate of a PFA material of a seal bag for use in a downhole submersible pumping system. The method includes the steps of applying a metal layer to a polymer layer, applying an adhesive layer to the polymer layer or the metal layer, and rolling the adhesive layer onto a substrate of the seal bag. The method may also include the steps of rotating a first roller, which is located above the polymer layer of the metalized polymer film, and rotating a second roller, which is
located on an interior surface of the substrate of the seal bag, in the opposite direction of the first roller. Heat or pressure can be used to assist in the adherence of the metalized polymer coating to the substrate of the seal bag. The polymer layer of the metalized polymer coating preferably comprises a PTFE polymer.
BRIEF DESCRIPTION OF THE DRAWINGS
[008] FIG. 1 is an elevational view of a submersible pumping system constructed in accordance with a presently preferred embodiment.
[009] FIG. 2 is a cross-sectional view of a first preferred embodiment of a seal section for use with the submersible pumping system of FIG. 1.
[010] FIG. 3 is a perspective view of a first preferred embodiment of the seal bag of FIG. 2.
[011] FIG. 4 is a cross-sectional view of a substrate constructed in accordance with a presently preferred embodiment.
[012] FIG. 5 is a cross-sectional view of the substrate of FIG. 4 being applied to the seal bag of FIG. 3 in accordance with a presently preferred embodiment.
[013] FIG. 6 is a cross-sectional view of a second alternative version of the substrate of FIG. 4 being applied to the seal bag of FIG. 3.
[014] FIG. 7 is a cross-sectional view of a substrate constructed in accordance with an alternate preferred embodiment.
[015] FIG. 8 is a cross-sectional view of a substrate constructed in accordance with an alternate preferred embodiment.
[016] FIG. 9 is a cross-sectional view of a metalized polymer film applied to the interior of the seal bag.
[017] FIG. 10 is a cross-sectional view of a metalized polymer film applied to the interior and exterior of the seal bag.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[018] In accordance with a preferred embodiment of the present invention, FIG. 1 shows an elevational view of a pumping system 100 attached to production tubing 102. The pumping system 100 and production tubing 102 are disposed in a wellbore 104, which is drilled for the production of a fluid such as water or petroleum. As used herein, the term "petroleum" refers broadly to all mineral hydrocarbons, such as crude oil, gas and combinations of oil and gas. The production tubing 102 connects the pumping system 100 to a wellhead 106 located on the surface. Although the pumping system 100 is primarily designed to pump petroleum products, it will be understood that the present invention can also be used to move other fluids. It will also be understood that, although each of the components of the pumping system are primarily disclosed in a submersible application, some or all of these components can also be used in surface pumping operations.
[019] The pumping system 100 preferably includes some combination of a pump assembly 108, a motor assembly 1 10 and a seal section 112. The motor assembly 1 10 is preferably an electrical motor that receives power from a surface-mounted motor control unit (not shown). When energized, the motor assembly 110 drives a shaft that causes the pump assembly 108 to operate. The seal section 1 12 shields the motor assembly 110 from mechanical thrust produced by the pump assembly 108 and provides for the expansion of motor lubricants during operation. The seal section 1 12 also isolates the motor assembly 1 10 from the wellbore fluids passing through the pump assembly 108. Although only one of each component is shown, it will be understood that more can be connected when appropriate. It may be desirable to use tandem-motor combinations, multiple seal sections, multiple pump assemblies or other downhole components not shown in FIG. 1.
[020] Referring now to FIG. 2, shown therein is a cross-sectional view of the seal section 1 12. The seal section 1 12 includes a housing 1 14, a shaft 116, a seal bag 118, a support tube 120 and first and second bag plates 122a, 122b. The seal bag 118 is configured to prevent the contamination of clean motor lubricants with wellbore fluids. The shaft 116 transfers mechanical energy from the motor assembly 110 to the
pump assembly 108. The bag support tube 120 provides support for the seal bag 1 18 and shields the shaft 1 16 as its passes through the seal bag 1 18. For the purposes of the instant disclosure, the terms "bag seal assembly" will refer to the seal bag 1 18, the bag support tube 120 and the first and second bag plates 122a, 122b. In addition to the bag seal assembly, the seal section 1 12 may also include seal guides 124, a plurality of ports 126 and one or more o-ring seals 128. The o-ring seals 128 are located at various positions within the seal section 112 and limit the migration of contaminants and well fluids into the clean lubricant.
[021] For purposes of illustration, the bag seal assembly is disclosed as contained within the seal section 1 12. It will be understood, however, that the bag seal assembly could be installed elsewhere in the pumping system 100. For example, it may be desirable to integrate the bag seal assembly within the motor assembly 1 10 or pump assembly 108.
[022] Referring now also to FIG. 3, shown therein is a side perspective view of a preferred embodiment of the seal bag 118. The seal bag 1 18 preferably includes a substrate 130, a first end 132 and a second end 134. In preferred embodiments, the substrate 130 is substantially configured as an elongated cylinder with an interior surface 136 and an exterior surface 138. In preferred embodiments, the substrate 130 is fabricated from an elastomer or other polymer, such as, for example PTFE, PFA, or polyvinyl chloride (PVC). In particularly preferred embodiments, the substrate 130 is constructed from extruded PFA.
[023] Turning now to FIG. 4, shown therein is a close-up, cross sectional view of a preferred embodiment of a metalized polymer film 140. The metalized polymer film 140 includes a metal coating layer 142, a polymer film layer 144 and an adhesive layer 146. Presently preferred metals to be used in the metal coating layer 142 include titanium, stainless steel, nickel, aluminum, chrome, silver and gold, and alloys for each of these metals. It will be appreciated that the metal coating layer 142 may be produced with combinations of multiple metals and metal alloys. It will also be understood that in alternate preferred embodiments, the metal coating layer 142 may consist of multilayered coatings with two or more metal coating layers 142 and that
each metal coating layer 142 may be prepared using different metals and metal alloys. In preferred embodiments, the metal coating layer 142 constitutes a metal foil that is suitable for adherence to adjacent layers of the polymer film layer 144. In alternate embodiments, the metal coating layer includes a metal deposition layer applied to a substrate. The deposition layer may be achieved through sputtering and vacuum metallization.
[024] The polymer film layer 144 is fabricated from an elastomer or other polymer, such as, for example PTFE, PFA, or PVC. In preferred embodiments, the polymer film layer 144 is fabricated from PTFE with a thickness of 0.001 inches to 0.005 inches. Presently preferred adhesives utilized as the adhesive layer 146 include heat sensitive or pressure sensitive adhesives, and may consist of any known adhesives suitable in such applications, such as silicones, epoxies, polyurethanes, acrylics, and polyimides. Although the metalized polymer film 140 is depicted so that the adhesive layer 146 is joined to the polymer film layer 144, it will be understood that in alternate preferred embodiments, the adhesive layer 146 may be joined to the metal coating layer 142.
[025] Now referring to FIG. 5, shown therein is a cross sectional view of the metalized polymer film 140 being applied to the substrate 130 of the seal bag 1 18. In a preferred embodiment, the metalized polymer film 140 is applied to the seal bag 1 18 by rolling the seal bag 1 18 about its axis and applying the metalized polymer film 140 so that the adhesive layer 146 is in contact with the exterior surface 138 of the substrate 130 of the seal bag 1 18. In particularly preferred embodiments, the metalized polymer film 140 is wrapped around the seal bag 118 a number of times to create several overlapping layers of metalized polymer film 140 around the seal bag 1 18.
[026] As shown in FIG. 6, in a cross sectional view of an alternate preferred embodiment, the metalized polymer film 140 is applied to the substrate 130 of the seal bag 1 18 by rolling the metalized polymer film 140 and the seal bag 1 18 between a first mandrel 148 positioned above the metalized polymer film 140 and a second mandrel 150 positioned on the interior surface 136 of the seal bag 1 18. The first
mandrel 148 rotates in one direction and the second mandrel 150 rotates in the opposite direction to move the metalized polymer film 140 and the substrate 130 of the seal bag 118 between the first mandrel 148 and the second mandrel 150.
[027] The first mandrel 148 and the second mandrel 150 can alternatively be used to apply the requisite pressure if a pressure sensitive adhesive is used for the adhesive layer 146 of the metalized polymer film 140. In an alternative preferred embodiment, if a heat sensitive adhesive is used for the adhesive layer 146 of the metalized polymer film 140, then the one or both of the first mandrel 148 and second mandrel 150 can be heated.
[028] It will be understood that several layers of the metalized polymer film 140 could be built up around the circumference of the seal bag 1 18 through continuous application of the metalized polymer film around the circumference of the seal bag 1 18. Multiple layers of metalized polymer film 140 provide more protection from handling of the seal bag 1 18 and the multiple polymer film layers 144 protect the thin metal film layers 142. It will be further understood that if a heat sensitive adhesive is used for the adhesive layer 146 of the metalized polymer film 140, then after the desired layers of metalized polymer film 140 are applied to the seal bag 118 of FIGS. 5 or 6, an oven can be utilized to cure the adhesive.
[029] Turning to FIG. 7, shown therein is an alternate embodiment of the metalized polymer film 140. In the alternate embodiment depicted in FIG. 7, the metal coating layer 142 is located between the exterior polymer film layer 144 and the interior adhesive layer 146. Presently preferred metals to be used in the metal coating layer 142 include titanium, stainless steel, nickel, aluminum, chrome, silver and gold, and alloys for each of these metals. It will be appreciated that the metal coating layer 142 may be produced with combinations of multiple metals and metal alloys. It will also be understood that in alternate preferred embodiments, the metal coating layer 142 may consist of multilayered coatings with two or more metal coating layers 142 and that each metal coating layer 142 may be prepared using different metals and metal alloys.
[030] Turning to FIG. 8, shown therein is an alternate embodiment in which the adhesive layer 146 is manufactured from a heat-fusable polymer. Suitable polymers include PEEK, PTFE, and PVC. In a particularly preferred embodiment, the adhesive layer is manufactured from the same polymer used for the polymer film layer 144. During application to the seal bag 118, the application of heat to the adhesive layer 146 fuses the polymer in the adhesive layer 146 to the bag substrate 130.
[031] Turning to FIG. 9, shown therein is yet another preferred embodiment in which the metalized polymer film 140 is applied to the interior surface 136 of the substrate 130. The metalized polymer film 140 can either be applied directly to the interior surface 136 of the substrate 130 or applied to the exterior surface 138 of the substrate and then turned inside-out to present the metalized polymer film 140 on the inside of the seal bag 118. In the preferred embodiment depicted in FIG. 10, the metalized polymer film 140 is applied to both interior surface 136 and the exterior surface 138 of the substrate using the manufacturing techniques disclosed herein. The interior metalized polymer film 140 has an external metal coating layer 142 and the exterior metalized polymer film 140 has an external polymer film layer. It will be appreciated the embodiment depicted in FIG. 10 is merely exemplary and that additional combinations and variations of the metalized polymer film 140 are within the scope of preferred embodiments.
[032] The process of applying metalized polymer film 140 to the seal bag 1 18 reduces the risk of water permeation into the motor assembly 110, and protects high temperature motor insulation materials, reduces motor winding shorts, and provides better lubrication characteristics. It will be also be understood that the novel process of applying metalized polymers to PFA substrates will find application in other downhole components, including, for example, mechanical seal bellows and pothead connectors.
[033] It is to be understood that even though numerous characteristics and advantages of various embodiments of the present invention have been set forth in the foregoing description, together with details of the structure and functions of various embodiments of the invention, this disclosure is illustrative only, and changes may be
made in detail, especially in matters of structure and arrangement of parts within the principles of the present invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed. It will be appreciated by those skilled in the art that the teachings of the present invention can be applied to other systems without departing from the scope and spirit of the present invention.
Claims
1. A method for applying a metalized polymer film to a seal bag for use in a downhole submersible pumping system, wherein the seal bag is manufactured from a substrate, the method comprising the steps of: applying a metal layer to a polymer layer; applying an adhesive layer to the polymer layer; and rolling the adhesive layer onto the substrate of the seal bag.
2. The method of claim 1, wherein the metal layer comprises a metal selected from the group consisting of titanium, stainless steel, nickel, aluminum, chrome, silver and gold.
3. The method of claim 1, wherein the metal layer comprises at least two metals selected from the group consisting of titanium, stainless steel, nickel, aluminum, chrome, silver and gold.
4. The method of claim 1, wherein the polymer layer comprises a polytetrafluoroethylene polymer in a thickness ranging from 0.001 inches to about 0.005 inches.
5. The method of claim 1, further comprising the steps of: rotating a first roller, wherein the first roller is located above the metal layer of the metalized polymer film; and rotating a second roller in the opposite direction of the first roller, wherein the second roller is located on an interior surface of the substrate of the seal bag.
6. The method of claim 5, further comprising the step of applying pressure with the first roller and the second roller to help the adhesive layer adhere to the substrate.
7. The method of claim 5, further comprising the step of applying heat to the first roller and the second roller to help the adhesive layer adhere to the substrate.
8. The method of claim 1, wherein the substrate has an interior and an exterior and the step of rolling the adhesive layer onto the substrate of the seal bag further comprises rolling the adhesive layer onto the exterior of the substrate.
9. The method of claim 1, wherein the substrate has an interior and an exterior and the step of rolling the adhesive layer onto the substrate of the seal bag further comprises rolling the adhesive layer onto the exterior of the substrate and then turning the substrate inside-out.
10. A method for applying a metalized polymer film to a seal bag for use in a downhole submersible pumping system, the method comprising the steps of: applying a metal layer to a polymer layer; applying an adhesive layer to the metal layer; and rolling the adhesive layer onto a substrate of the seal bag.
11. The method of claim 10, wherein the metal layer comprises a metal selected from the group consisting of titanium, stainless steel, nickel, aluminum, chrome, silver and gold.
12. The method of claim 10, wherein the metal layer comprises at least two metals selected from the group consisting of titanium, stainless steel, nickel, aluminum, chrome, silver and gold.
13. The method of claim 10, wherein the polymer layer comprises a polytetrafluoroethylene polymer in a thickness ranging from 0.001 inches to about 0.005 inches.
14. The method of claim 10, further comprising the steps of: rotating a first roller, wherein the first roller is located above the polymer layer of the metalized polymer film; and rotating a second roller, in the opposite direction of the first roller, wherein the second roller is located on an interior surface of the substrate of the seal bag.
15. The method of claim 14, further comprising the step of applying pressure with the first roller and the second roller to help the adhesive layer adhere to the substrate.
16. The method of claim 14, further comprising the step of applying heat to the first roller and the second roller to help the adhesive layer adhere to the substrate.
17. An electric submersible pumping system comprising: an electric motor; a pump driven by the electric motor; and a seal section between the electric motor and the pump, wherein the seal section includes a seal bag comprising: a substrate, wherein the substrate is substantially cylindrical and includes an interior surface and an exterior surface; and a metalized polymer film applied to at least one of the interior surface and exterior surface of the seal bag.
18. The electric submersible pumping system of claim 17, wherein the metalized polymer film further comprises: a metal coating layer; a polymer film layer; and an adhesive layer.
19. The electric submersible pumping system of claim 18, wherein the metal coating layer comprise: a substrate; and a metal deposition layer applied to the substrate.
20. The electric submersible pumping system of claim 18, wherein the metal coating layer comprises a metal foil.
21. The electric submersible pumping system of claim 20, wherein the metal coating layer is external to the polymer film layer.
22. The electric submersible pumping system of claim 20, wherein the metal coating layer is internal to the polymer film layer.
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CA2935713A CA2935713C (en) | 2013-12-19 | 2014-12-11 | Method for reducing permeability of downhole motor protector bags |
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US14/135,366 US9470216B2 (en) | 2012-11-28 | 2013-12-19 | Method for reducing permeability of downhole motor protector bags |
US14/135,366 | 2013-12-19 |
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CN106437603A (en) * | 2015-08-09 | 2017-02-22 | 阜新贝格科技有限公司 | Resin hole sealing device |
WO2017095876A1 (en) * | 2015-12-04 | 2017-06-08 | General Electric Company | Seal assembly for a submersible pumping system and an associated method thereof |
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US3567546A (en) * | 1967-04-20 | 1971-03-02 | United Glass Ltd | Method of producing hollow collapsible containers |
EP0327844A2 (en) * | 1988-02-06 | 1989-08-16 | Lu Fengsheng | All dry submersible motor pump with a concordant seal system |
US20110194956A1 (en) * | 2007-11-06 | 2011-08-11 | Wood Group Esp, Inc. | Mechanism for sealing pfa seal bags |
-
2014
- 2014-12-11 WO PCT/US2014/069713 patent/WO2015094897A1/en active Application Filing
- 2014-12-11 CA CA2935713A patent/CA2935713C/en active Active
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US3567546A (en) * | 1967-04-20 | 1971-03-02 | United Glass Ltd | Method of producing hollow collapsible containers |
EP0327844A2 (en) * | 1988-02-06 | 1989-08-16 | Lu Fengsheng | All dry submersible motor pump with a concordant seal system |
US20110194956A1 (en) * | 2007-11-06 | 2011-08-11 | Wood Group Esp, Inc. | Mechanism for sealing pfa seal bags |
US8246326B2 (en) | 2007-11-06 | 2012-08-21 | Ge Oil & Gas Esp, Inc. | Mechanism for sealing PFA seal bags |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN106437603A (en) * | 2015-08-09 | 2017-02-22 | 阜新贝格科技有限公司 | Resin hole sealing device |
CN106437603B (en) * | 2015-08-09 | 2018-11-02 | 阜新贝格科技有限公司 | Resin hole packer |
WO2017095876A1 (en) * | 2015-12-04 | 2017-06-08 | General Electric Company | Seal assembly for a submersible pumping system and an associated method thereof |
US10323751B2 (en) | 2015-12-04 | 2019-06-18 | General Electric Company | Seal assembly for a submersible pumping system and an associated method thereof |
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CA2935713C (en) | 2022-11-08 |
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