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Thick oil activating agent and preparation method thereof

A technology of initiator and functional monomer, which is applied in the field of heavy oil activator and its preparation, can solve the problems of difficult to achieve the overall viscosity reduction of formation heavy oil and improve the overall benefit of the oil field, achieve good profile control ability and improve recovery rate, the effect of increasing liquidity

Active Publication Date: 2017-11-24
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] With the continuous deepening of oilfield development, it is difficult to achieve the overall viscosity reduction of formation heavy oil and improve the overall benefit of the oilfield by conventional viscosity reduction technology alone.

Method used

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  • Thick oil activating agent and preparation method thereof
  • Thick oil activating agent and preparation method thereof
  • Thick oil activating agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] 1. Preparation of activated polymer

[0057] The activated polymer shown in formula (1) is specifically prepared by the following method:

[0058] First prepare the functional monomer I through the following steps:

[0059] 14.6g (0.1mol) 1,3-bis(N,N-dimethyl)-2-propanol and 42.5g (0.22mol) bromooctane ethanol solution are packed into a 250ml three-necked flask, magnetically stirred, and heated at 65 It was refluxed and condensed at ~70°C, and reacted for 24 hours. The solvent was removed by vacuum rotary evaporation at 50°C, an appropriate amount of acetone was added to heat to dissolve, and after cooling, a white solid was precipitated with diethyl ether to obtain product I. Acetone-diethyl ether was recrystallized three times to obtain a white solid with a yield of over 95%. Put 26.6g (0.05mol) of anhydrous chloroform solution of product I into a 250ml three-necked flask, add dropwise 6.06g (0.06mol) of triethylamine in chloroform, and add a small amount of hydroq...

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Abstract

The invention discloses a thick oil activating agent and a preparation method thereof. The thick oil activating agent is a polymer with the structure formula shown as a formula (1). In the formula (1), x, y, z, m and n are respectively mass percentage of the corresponding chain sections in the polymers; the m is between 0.75 and 0.85; the y is between 0.020 and 0.24; the x, the z, and the n are respectively between 0.001 and 0.01; the p is a natural number between 2 and 9. The activating polymer provided by the invention has the effects of enhancing the water phase viscosity and reducing the crude oil viscosity, and can be used as a displacing agent and a viscosity reducer to realize the integration of the displacing agent and the viscosity reducer. The activating polymer can enhance the water phase viscosity; the displacing function is realized; the emulsion dispersion of crude oil can be realized; the mixed phase flowability is enhanced; in addition, the dispersed crude oil and the non-contact crude oil continuously act; meanwhile, the water phase acts with both the mixed oil phase and the new oil in a continuously following way; more crude oil is continuously started. The activating polymer provided by the invention has low interface tension and has certain oil washing capability.

Description

technical field [0001] The invention relates to a heavy oil activator and a preparation method thereof, belonging to the field of polymer materials. Background technique [0002] Due to the high content of colloid and asphaltenes and high viscosity, heavy oil is much more difficult to extract than ordinary crude oil. At present, the conventional heavy oil production technology mainly includes heating viscosity reduction, dilution viscosity reduction, hydrothermal cracking viscosity reduction, microbial viscosity reduction and chemical viscosity reduction. High-temperature steam catalytic cracking, microbial degradation and chemical viscosity reducer can reduce the viscosity of heavy oil and enhance fluidity, so as to realize the effective recovery of heavy oil. [0003] However, the current heavy oil recovery technologies have certain limitations to varying degrees. The heating viscosity reduction (thermal recovery) method is complex in process, high in energy consumption,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/56C08F220/34C08F220/36C08F216/36C09K8/588
CPCC08F220/56C09K8/588C08F220/34C08F220/36C08F216/36
Inventor 张健陈文娟杨光朱玥珺薛新生王旭东王姗姗
Owner CHINA NAT OFFSHORE OIL CORP
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