Preparation method of high-polymer viscosity reducer for heavy oil production

A technology of polymer and viscosity reducer, applied in chemical instruments and methods, drilling compositions, etc., can solve the problems of high production cost and large amount of viscosity reducer surfactant.
CN110372816AActive Publication Date: 2019-10-25CHINA NAT OFFSHORE OIL CORP +2
10 Cites 18 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHINA NAT OFFSHORE OIL CORP
Publication Date
2019-10-25

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a preparation method of a high-polymer viscosity reducer for heavy oil production. According to the preparation method, by utilizing cysteamine as a chain transfer agent, a macromolecule functional monomer containing various functional groups such as nitrogen heterocyclic rings, benzene rings and ethylene oxide chain segments is prepared, then the macromolecule functionalmonomer, acrylamide, vinyl pyrrolidone, acrylic acid and a 2-acrylamide-2-methylpropanesulfonic acid water-soluble monomer are taken as raw materials, and a water-soluble polymer with a comb-shaped functional structure is prepared through aqueous solution polymerization. The product has the good dissolving property in an aqueous solution, and the viscosity of heavy oil can be lowered significantly. In addition, oil-water separation is easy under still standing of a heavy oil viscosity-reducing sample, and produced liquid is convenient to treat.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a preparation method of a polymer viscosity reducer for heavy oil development, belonging to the technical field of oil field chemistry. Background technique

[0002] With the continuous development of modern industry and the continuous improvement of economic level, the demand for energy in human society is getting higher and higher. Petroleum is one of the most important energy supply resources at present, and its exploitation and utilization are of great significance to the development of national economy and the stability of national security. With the continuous exploitation of crude oil resources and oil and gas resources are non-renewable energy sources, most of the light oil resources have been exploited by human beings. Therefore, at present, people use heavy oil, heavy oil and high-wax crude oil and other slightly inferior oil products. Crude oil is the key object of development and utilization. Due to its complex co...

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