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Surface activating agent for oil-field thick-oil well

A surfactant, oil well technology, applied in the directions of drilling composition, dissolution, chemical instruments and methods, etc., can solve the problems of reducing life, reducing crude oil production, affecting pumping unit efficiency, etc.

Inactive Publication Date: 2007-08-29
图们市科兴石化技术开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

High-heavy crude oil contains bitumen and bituminous colloidal structure. During mining and pipeline gathering and transportation, it often causes high back pressure due to its high viscosity, which affects the efficiency of pumping units, reduces its life, and reduces crude oil production.

Method used

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  • Surface activating agent for oil-field thick-oil well
  • Surface activating agent for oil-field thick-oil well

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Embodiment Construction

[0016] A kind of surface active agent that oil field dense well is used, is made up of following components:

[0017] Water 1500kg, caustic soda NaOH 330kg, ethanol 450kg, oleic acid 275kg, octylphenol polyoxyethylene (15) ether or nonylphenol polyoxyethylene (15) ether 200kg, sodium dodecylbenzenesulfonate 150kg;

[0018] Its preparation method: mix and dissolve water, caustic soda and ethanol, add oleic acid for saponification reaction, react at room temperature, the maximum temperature does not exceed 50 ° C, the pressure is 0.5 MPa, the reaction time is 40 minutes, then stir it, add Octylphenol polyoxyethylene (15) ether or nonylphenol polyoxyethylene (15) ether, then add sodium dodecylbenzene sulfonate and stir, and finally package, 200Kg per plastic drum. How to use: Make it into 0.5-1.5% aqueous solution, inject it into the heavy oil well, let it suffocate for 14 hours, and then start the oil extraction machine.

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Abstract

The invention discloses a surface activator used in oil field thick oil well that is made up from water 1500kg, sheet alkali 330kg, alcohol 450kg, oleic acid 275kg, alkyl phenol polyoxyethylene (15) ether 200kg, sodium dodecyl benzene sulfonate 150kg. The invention could decrease interface tension, and under the emulsion effecting, the o / w or w / o would form flow state in normal state to be convenient to convey and pump. The invention has low cost and high effect.

Description

technical field [0001] The invention relates to a recovery oil displacement agent for oil fields, that is, a surfactant for heavy oil wells in oil fields. technical background [0002] With the massive exploitation of oil, the depletion of resources year by year and the shortage of backup resources, enhancing oil recovery is an important research topic. High-heavy crude oil contains bitumen and bituminous colloidal structure. During mining and pipeline gathering and transportation, it often causes high back pressure due to its high viscosity, which affects the efficiency of pumping units, reduces its life, and reduces crude oil production. At present, oil fields such as Daqing, Jilin, Liaohe, Dagang, Jidong, and Shengli generally use steam huffing and puffing and electric heating rods to heat and extract oil, which is costly, and the heavy oil produced on the ground will return to its freezing point due to the temperature drop , its viscosity will increase significantly, an...

Claims

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Application Information

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IPC IPC(8): C09K8/584B01F17/00C09K23/00
Inventor 李振华
Owner 图们市科兴石化技术开发有限公司
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