Polyurethane gel for marine exploration streamer and preparation method for same

A technology of polyurethane gel and polyurethane prepolymer, which is applied in the seismology of areas covered by water, etc., to achieve excellent sound transmission performance, good adhesion, and achieve the effect of low density requirements

Active Publication Date: 2012-08-22
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the structural design of this streamer makes the manufacturing process of the streamer very complicated, which increases the manufacturing cost of the streamer

Method used

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  • Polyurethane gel for marine exploration streamer and preparation method for same
  • Polyurethane gel for marine exploration streamer and preparation method for same
  • Polyurethane gel for marine exploration streamer and preparation method for same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] First, add 200g of PU1 into a 500mL reaction bottle, raise the temperature to 60°C, add 164g of D80, mix well, keep the vacuum at 0.09MPa, and degas for 1h. The hydroxyl-terminated polybutadiene polyurethane prepolymer solution, ie, component A, was obtained by discharging the material, with a solvent oil mass content of 45% and an isocyanate group NCO content of 1.38%.

[0052] Then, add 100g of N-210 into a 250mL reaction bottle, and dehydrate in vacuum at 120-140°C and 0.09MPa vacuum for 2h. Cool down to 40°C, remove the vacuum, add 81.8g of D80, mix evenly, and discharge to obtain a curing agent solution, that is, component B, whose solvent oil mass content is 45%, and the total hydroxyl value of the solution is 60.5KOH mg / g.

[0053] Then in the 500mL reactor, add the component A of 250g and the component B of 106g, mix homogeneously, after degassing 20min under vacuum (vacuum tightness 0.09MPa), add the catalyst stannous octoate of 110mg, mix homogeneously (oil ...

Embodiment 2

[0056] First, add 200g of PU2 into a 500mL reaction bottle, raise the temperature to 60°C, add 164g of D80, mix well, keep the vacuum at 0.09MPa, and degas for 1h. The hydroxyl-terminated polybutadiene polyurethane prepolymer solution, ie, component A, was obtained by discharging the material, with a solvent oil mass content of 45% and an isocyanate group NCO content of 1.93%.

[0057] Then, add 100 g of N210 into a 250 mL reaction bottle, and dehydrate in vacuum at 120-140° C. and 0.09 MPa vacuum for 2 hours. Cool down to 40°C, remove the vacuum, add 81.8g of D80, mix evenly, and discharge to obtain a curing agent solution, that is, component B, whose solvent oil mass content is 45%, and the total hydroxyl value of the solution is 60.5KOH mg / g.

[0058] Add 220g of Component A and 131g of Component B in a 500mL reactor, mix well, and after degassing under vacuum (vacuum degree 0.09MPa) for 20min, add 110mg of catalyst stannous octoate, mix well (the oil filling capacity is ...

Embodiment 11

[0068] First, add 200g of PU2 into a 500mL reaction bottle, raise the temperature to 60°C, add 164g of D70, mix well, keep the vacuum at 0.09MPa, and degas for 1h. The hydroxyl-terminated polybutadiene polyurethane prepolymer solution, ie, component A, was obtained by discharging the material, with a solvent oil mass content of 45% and an isocyanate group NCO content of 1.93%.

[0069] Next, add 100 g of N-210 into a 250 mL reaction bottle, and dehydrate in vacuum at 120-140° C. for 2 hours at a vacuum degree of 0.09 MPa. Cool down to 40°C, remove the vacuum, add 81.8g of D70, mix evenly, and discharge to obtain a curing agent solution, that is, component B. The mass content of solvent oil is 45%, and the total hydroxyl value of the solution is 60.5KOH mg / g.

[0070] Then, in the 500mL reactor, add the component A of 240g and the component B of 143g, mix homogeneously, after degassing 20min under vacuum (vacuum tightness 0.09MPa), add the catalyst stannous octoate of 120mg, ...

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Abstract

The invention discloses a low-density and low-modulus polyurethane gel capable of being used as a filling material for a marine exploration streamer and a preparation method for the same. The polyurethane gel disclosed by the invention is formed by mixing and filling hydroxyl-terminated polybutadiene polyurethane prepolymer, polyether polyol and solvent oil under the action of a catalyst, whereinthe density of the polyurethane gel is lower than 0.92 g / cm<3>, and the modulus of the polyurethane gel is lower than 5 MPa. The low-density and low-modulus polyurethane gel disclosed by the invention has good cohesive property, high extensibility and self-healing property, and excellent sound transmission performance; and can be used as a filling material for a marine exploration streamer for realizing the suspension, sound transmission and sonar signal acquisition of the exploration streamer.

Description

technical field [0001] The invention relates to a polyurethane gel used for ocean exploration streamers and a preparation method thereof. Background technique [0002] Marine seismic exploration is the most important means of offshore oil and gas exploration, and the marine seismic exploration streamer is an important part of the seismic exploration acquisition system. For many years, the marine seismic exploration industry has mainly used liquid-filled streamers. This streamer is made of a round tube made of transparent polyurethane elastomer as a streamer protective jacket. Sensors and digital packages for collecting seismic signals, power cords, Composed of signal lines and high-tensile Kevlar fiber ropes, the void inside the tow cable passes through a certain low density (about 0.78-0.82g / cm 3 ) liquid material filling. The liquid streamer has the advantages of easy to adjust the buoyancy of the streamer, low cost, and easy injection. However, when the liquid streamer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/78C08G18/48G01V1/38
Inventor 郭睿威王子秋唐进郝健邓勇李艳青
Owner CHINA NAT OFFSHORE OIL CORP
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