Unlock instant, AI-driven research and patent intelligence for your innovation.

Wax-proofing agent for offshore oilfield crude oil gathering and transportation system

A technology for gathering and transportation systems and offshore oil fields, applied in pipeline systems, gas/liquid distribution and storage, mechanical equipment, etc. The effect of transporting pressure, enhancing the fluidity of crude oil, and inhibiting wax precipitation

Inactive Publication Date: 2015-08-19
E TECH ENERGY TECH DEV CORP
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The commonly used anti-wax agents are divided into two categories: oil-based and water-based. The effect of oil-based anti-wax agents is better, but the agent itself is highly toxic, flammable and explosive, so its use is limited.
Water-based anti-wax agent has less toxic and side effects, but it is suitable for oil fields with high water content, and the anti-wax efficiency is lower than that of oil-soluble

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Wax-proofing agent for offshore oilfield crude oil gathering and transportation system
  • Wax-proofing agent for offshore oilfield crude oil gathering and transportation system
  • Wax-proofing agent for offshore oilfield crude oil gathering and transportation system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] An anti-wax agent for crude oil gathering and transportation systems in offshore oilfields, used for treating waxy crude oil, preparation and application of the anti-wax agent FLQ-01.

[0016] Main raw materials: Maleic anhydride, ethylene glycol, and styrene are all analytically pure; tert-butyl peroxybenzoate and xylene are all industrially pure.

[0017] Main instruments: digital electronic balance; precision electric stirring device; conventional glass instruments for synthesis, etc.

[0018] Component ratio: the molar ratio of maleic anhydride to ethylene glycol is 2:1, the molar ratio of maleic anhydride to styrene is 1:2, and the initiator tert-butyl peroxybenzoate is 5% of the mass of maleic anhydride , The polymerization inhibitor p-benzoquinone is 8% of the mass of styrene.

[0019] Preparation method: first carry out polymerization reaction: the reaction temperature is 60°C, the time is 3h, then the temperature is raised to 80°C, the polymerization inhibitor...

Embodiment 2

[0026] A kind of anti-wax agent for offshore oilfield crude oil gathering and transportation system, used to treat waxy crude oil, preparation and application of anti-wax agent FLQ-02:

[0027] Component ratio: the molar ratio of maleic anhydride to ethylene glycol is 2:1, the molar ratio of maleic anhydride to styrene is 1:2, and the initiator tert-butyl peroxybenzoate is 6% of the mass of maleic anhydride , The polymerization inhibitor p-benzoquinone is 8% of the mass of styrene.

[0028] The preparation method, implementation object and evaluation method are the same as in Example 1, and the results of wax prevention are shown in Table 2.

[0029] Table 2 Wax prevention effect of different concentrations of wax inhibitor FLQ-02

[0030]

Embodiment 3

[0032] A kind of anti-wax agent for crude oil gathering and transportation system in offshore oilfields, used to treat waxy crude oil, preparation and application of anti-wax agent FLQ-03:

[0033] Component ratio: the molar ratio of maleic anhydride to ethylene glycol is 2:1, the molar ratio of maleic anhydride to styrene is 1:2, and the initiator tert-butyl peroxybenzoate is 7% of the mass of maleic anhydride , The polymerization inhibitor p-benzoquinone is 8% of the mass of styrene.

[0034] The preparation method, implementation object and evaluation method are the same as in Example 1, and the results of wax prevention are shown in Table 3.

[0035] Table 3 Wax prevention effect of different concentrations of wax inhibitor FLQ-03

[0036]

[0037] From Examples 1, 2, and 3, it can be seen that the amount of initiator is different, and the anti-wax effect has obvious differences under the same degree; when the initiator mass is 6%, the anti-wax effect is the best; as t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a wax-proofing agent for an offshore oilfield crude oil gathering and transportation system and belongs to the technical field of petrochemical processing. The wax-proofing agent for the offshore oilfield crude oil gathering and transportation system is characterized by being prepared from maleic anhydride, ethylene glycol and styrene, wherein the mole ratio of maleic anhydride to ethylene glycol is (3-4):(1-2), the mole ratio of maleic anhydride to styrene is 1:(1-2), and an initiator namely tert-butyl peroxy benzoate accounts for 5-7% of the mass of maleic anhydride. The wax-proofing agent is obtained by the steps of performing polymerization reaction at first for 2-4 hours at a reaction temperature of 50-70DEG C, then heating to 70-90DEG C, and adding a polymerization inhibitor namely p-benzoquinone which accounts for 8-10% of the mass of styrene to perform esterification reaction for 1.5-2.5 hours. The wax-proofing agent provided by the invention has the advantages of relatively strong surface activity, stable performance, wide application scope, high wax-proofing rate, low cost, small toxic or side effects and the like, and also has the positive effects of wax removal, pour point reduction, viscosity reduction and the like.

Description

technical field [0001] The invention belongs to the technical field of petrochemical processing, and in particular relates to a wax inhibitor for crude oil gathering and transportation systems in offshore oil fields. Background technique [0002] At present, during the production of crude oil, as the temperature and pressure drop, the wax in the crude oil will gradually precipitate around the well wall and in the production pipeline, causing great impact and damage to crude oil processing, transportation and process equipment, and restricting the development of oilfields. normal production. [0003] At a lower temperature, the paraffin in crude oil precipitates and aggregates to form a cross-linked network, in which light components are wrapped, the viscosity of crude oil increases, and the low-temperature fluidity becomes poor. If an organic polymer with polar groups is added to the heavy oil, the polar groups will reduce the intermolecular cross-linking points, weaken the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/08C08F222/08C08F8/14F17D1/17
Inventor 康玉彬梁海东
Owner E TECH ENERGY TECH DEV CORP