Oilfield apparatus comprising swellable elastomers having nanosensors therein and methods of using same in oilfield application

• US 7,631,697 B2
• Filed: 11/29/2006
• Issued: 12/15/2009
• Est. Priority Date: 11/29/2006
• Status: Expired due to Fees

• Current Assignee: Schlumberger Technology Corporation (SLB)
• Original Assignee: Schlumberger Technology Corporation (SLB)
• Inventors: Bhavsar, Rashmi B.
• Primary Examiner(s): Bates; Zakiya W
• Assistant Examiner(s): DiTrani; Angela M
• Application Number:
  US11/564,467
• Publication Number:
  US 20080125335A1
• Time in Patent Office: 1,112 Days
• Field of Search: None
• US Class Current: 166/381
• CPC Class Codes: B82Y 15/00 Nanotechnology for interacting, sensing or actuating, e.g. quantum dots as markers in protein assays or molecular motors
• CPC Class Codes: E21B 33/127 with inflatable sleeve E21B33/122, E21B33/124 take precedence
• CPC Class Codes: E21B 33/1277 characterised by the construction or fixation of the sleeve
• CPC Class Codes: E21B 34/00 Valve arrangements for boreholes or wells
• CPC Class Codes: E21B 47/00 Survey of boreholes or wells monitoring pressure or flow of drilling fluid E21B21/08
• CPC Class Codes: E21B 49/00 Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells

Abstract

An oilfield apparatus has a swellable elastomeric composition that includes a swellable elastomer and one or more nanosensors dispersed therein. An oilfield assembly for exploring for, drilling for, testing for, or producing hydrocarbons includes various oilfield elements such as tubing, jointed pipe, sucker rods, submersible pump motor protector bags, packer elements, blow out preventer elements, zonal isolation tool elements, etc; and one or more of the oilfield elements has a swellable elastomeric composition that includes a swellable elastomer and one or more nanosensors dispersed therein. A method of selecting one or more oilfield elements has a component of an elastomeric composition that includes a swellable elastomer and one or more nanosensors dispersed therein; and a method of using the one or more oilfield elements in an oilfield operation, thus exposing the oilfield element to an oilfield environment.

Claims

1. An apparatus comprising an oilfield element made of a swellable elastomeric composition, wherein the swellable elastomeric composition comprises a man-made swellable elastomer and one or more nanosensors dispersed therein to sense one or more parameters useful in oilfield operations;

wherein the man-made elastomer comprises a reaction product of a linear or branched polymer having residual ethylenic unsaturation with an ethylenically unsaturated organic monomer having at least one reactive moiety selected from acid, acid anhydride, acid salt, and mixtures thereof.

2. The apparatus of claim 1 wherein the linear or branched polymer having residual ethylenic unsaturation is selected from polymers of ethylene-propylene-diene monomer (EPDM), natural rubber, cis-polybutadiene, trans-polyisoprene, ethylene-octene-based rubber, and combinations thereof.

3. The apparatus of claim 2, wherein the diene monomer is selected from non-conjugated dienes such as dicyclopentadiene, 5-ethylidene-2-norbornene, 5-methylene-2-norbornene 1,4-hexadiene, and the like.

4. The apparatus of claim 1 wherein the ethylenically unsaturated organic monomer having at least one reactive moiety is selected from acid, acid anhydride, and acid salt comprises more than one ethylenically unsaturated moiety.

5. The apparatus of claim 1 wherein the ethylenically unsaturated organic monomer is selected from maleic acid, acrylic acid, methacrylic acid, oleic acid, linoleic acid, linolenic acid, palmitoleic acid, anhydrides thereof, salts thereof, and mixtures thereof.

6. The apparatus of claim 1 wherein the linear or branched polymer having residual ethylenic unsaturation comprises from 1 to 100 percent of an oil-swell resistant polymer, with the balance comprising a water-swellable polymer.

7. The apparatus of claim 1 wherein the oilfield element is selected from submersible pump motor protector bags, packer elements, blow out preventer elements, zonal isolation tool elements, O-rings, T-rings, centralizers, hangers, plugs, plug catchers, check valves, universal valves, spotting valves, differential valves, circulation valves, equalizing valves, safety valves, fluid flow control valves, sliding seals, connectors, disconnect tools, downhole filters, motorheads, retrieval and fishing tools, bottom hole assemblies, seal assemblies, snap latch assemblies, anchor latch assemblies, shear-type anchor latch assemblies, no-go locators, sensor protectors, gaskets, pump shaft seals, tube seals, valve seals, seals and insulators used in electrical components, seals used in fiber optic connections, pressure sealing elements for fluids, and combinations thereof.

8. The apparatus of claim 1 wherein the nanosensors are dispersed uniformly in the swellable elastomer.

9. The apparatus of claim 1 wherein the nanosensor is a material having at least one feature having nanoscale dimension.

10. The apparatus of claim 9 wherein the feature having nanoscale dimension is selected from pore diameter, wire diameter, platelet length, particle mean diameter, sensing material thickness, and two or more of these features.

11. The apparatus of claim 1 wherein the nanosensor comprises materials selected from functionalized and non-functionalized materials.

12. The apparatus of claim 1 wherein the nanosensor comprises one or more nanowires or nanotubes.

13. The apparatus of claim 1 wherein the one or more parameters useful in oilfield operations is selected from chemical composition, chemical reactivity, chemical moieties, physical properties, fluid mechanical properties, transport phenomena coefficients, electrical properties, gas-to-liquid ratio, and any two or more of these properties.

14. The apparatus of claim 1 wherein the nanosensors comprise means for transmitting and receiving signals.

15. The apparatus of claim 1 wherein the man-made elastomer is selected from thermoplastic elastomers and non-thermoplastic elastomers.

16. An oilfield assembly for exploring for, drilling for, testing for, or producing hydrocarbons comprising:

one or more oilfield elements selected from tubing, jointed pipe, sucker rods, submersible pump motor protector bags, packer elements, blow out preventer elements, zonal isolation tool elements, O-rings, T-rings, centralizers, hangers, plugs, plug catchers, check valves, universal valves, spotting valves, differential valves, circulation valves, equalizing valves, safety valves, fluid flow control valves, sliding seals, connectors, disconnect tools, downhole filters, motorheads, retrieval and fishing tools, bottom hole assemblies, seal assemblies, snap latch assemblies, anchor latch assemblies, shear-type anchor latch assemblies, no-go locators, sensor protectors, gaskets, pump shaft seals, tube seals, valve seals, seals and insulators used in electrical components, seals used in fiber optic connections, pressure sealing elements for fluids, and combinations thereof;

wherein the one or more of oilfield elements comprises a swellable elastomeric composition comprising a man-made swellable elastomer and one or more nanosensors dispersed therein to sense one or more parameters useful in oilfield operations; and

wherein the man-made elastomer comprises a reaction product of a linear or branched polymer having residual ethylenic unsaturation with an ethylenically unsaturated organic monomer having at least one reactive moiety selected from acid, acid anhydride, acid salt, and mixtures thereof.

17. A method comprising:

(a) selecting one or more oilfield elements having a component comprising an elastomeric composition comprising a swellable elastomeric composition comprising a man-made swellable elastomer and one or more nanosensors dispersed therein to sense one or more parameters useful in oilfield operations; and

wherein the man-made elastomer comprises a reaction product of a linear or branched polymer having residual ethylenic unsaturation with an ethylenically unsaturated organic monomer having at least one reactive moiety selected from acid, acid anhydride, acid salt, and mixtures thereof; and

(b) using the one or more oilfield elements in an oilfield operation, thus exposing the oilfield element to an oilfield environment.

18. The method of claim 17 wherein the oilfield element is selected from submersible pump motor protector bags, packer elements, blow out preventer elements, zonal isolation tool elements, O-rings, T-rings, centralizers, hangers, plugs, plug catchers, check valves, universal valves, spotting valves, differential valves, circulation valves, equalizing valves, safety valves, fluid flow control valves, sliding seals, connectors, disconnect tools, downhole filters, motorheads, retrieval and fishing tools, bottom hole assemblies, seal assemblies, snap latch assemblies, anchor latch assemblies, shear-type anchor latch assemblies, no-go locators, sensor protectors, gaskets, pump shaft seals, tube seals, valve seals, seals and insulators used in electrical components, seals used in fiber optic connections, pressure sealing elements for fluids, and combinations thereof.