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

Composite surfactant for oil exploitation

A composite surfactant and oil extraction technology, which is applied in the directions of drilling compositions, chemical instruments and methods, etc., can solve problems such as insufficient oil displacement effect, and achieve good oil displacement effect.

Inactive Publication Date: 2015-10-07
CHENGDU GAOPU PETROLEUM ENG TECH
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In tertiary oil recovery, surfactants can be used, such as polyoxyethylene oleate, alkylphenol polyoxyethylene ether, sodium petroleum sulfonate, etc., and these single surfactants have their own advantages and disadvantages. not good enough

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A kind of compound surface active agent that is used for petroleum exploitation, comprises the component of following parts by weight:

[0013] Sodium petroleum sulfonate: 20 parts by weight;

[0014] Polyoxyethylene oleate: 1 part by weight;

[0015] Dialkylbenzene polyoxyethylene alkyl sulfonate: 0.5 parts by weight.

Embodiment 2

[0017] A kind of compound surface active agent that is used for petroleum exploitation, comprises the component of following parts by weight:

[0018] Sodium petroleum sulfonate: 30 parts by weight;

[0019] Polyoxyethylene oleate: 3 parts by weight;

[0020] Dialkylbenzene polyoxyethylene alkylsulfonate: 2.5 parts by weight.

Embodiment 3

[0022] A kind of compound surface active agent that is used for petroleum exploitation, comprises the component of following parts by weight:

[0023] Sodium petroleum sulfonate: 26 parts by weight;

[0024] Polyoxyethylene oleate: 2.7 parts by weight;

[0025] Dialkylbenzene polyoxyethylene alkylsulfonate: 1.4 parts by weight.

[0026] The composite surfactant of the invention has good oil displacement effect.

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 discloses a composite surfactant for oil exploitation. The composite surfactant comprises, by weight, 20-30 parts of petroleum sodium sulfonate, 1-3 parts of polyethyleneglycol monooleate and 0.5-2.5 parts of dialkyl benzene polyethyleneglycol alkyl sulfonate. The composite surfactant has good oil displacement efficiency.

Description

technical field [0001] The invention belongs to the field of petroleum exploitation, and in particular relates to a composite surfactant used in petroleum exploitation. Background technique [0002] As an important mineral resource, petroleum is very precious. In the process of oil exploitation, there are usually three stages in order to increase oil recovery: primary oil recovery, relying on the natural energy of the formation to produce oil, and the recovery rate is below 30%; secondary oil recovery, using water injection and gas injection technology to supplement Reservoir energy produces oil, and the recovery rate can be increased to 40-50%; tertiary oil recovery, using physical chemistry and biology to strengthen the exploitation of remaining reserves, the recovery rate can be increased to about 80-85%. In tertiary oil recovery, surfactants can be used, such as polyoxyethylene oleate, alkylphenol polyoxyethylene ether, sodium petroleum sulfonate, etc., and these single...

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): C09K8/584
CPCC09K8/584
Inventor 周斌
Owner CHENGDU GAOPU PETROLEUM ENG TECH