Xanthan gum-based profile control agent for oil exploitation and preparation method thereof, and application of xanthan gum-based profile control agent for oil exploitation

A technology of xanthan gum and profile control agent, which is applied in the fields of production fluids, chemical instruments and methods, earthwork drilling, etc., can solve the problems of deep reservoir formation, reduced application effect, and high temperature, and achieves good profile control effect and high temperature. Stability, low dosage effect

Active Publication Date: 2020-03-31
SHANDONG FOOD & FERMENT IND RES & DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the rapid development of my country's economy and the strengthening of environmental protection policies, the research and practice of biopolymers represented by xanthan gum in oil recovery are increasing rapidly, but the geological conditions of my country's oil reservoirs are extremely complex , the oil reservoir has deep strata, high temperature and high s

Method used

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  • Xanthan gum-based profile control agent for oil exploitation and preparation method thereof, and application of xanthan gum-based profile control agent for oil exploitation
  • Xanthan gum-based profile control agent for oil exploitation and preparation method thereof, and application of xanthan gum-based profile control agent for oil exploitation
  • Xanthan gum-based profile control agent for oil exploitation and preparation method thereof, and application of xanthan gum-based profile control agent for oil exploitation

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0030] Example 1 An improved environmental protection oilfield profile control agent

[0031] The said xanthan gum-based environment-friendly high-temperature- and salt-tolerant oilfield oil production auxiliary agent is composed of the following components and mass parts:

[0032] 72 parts of xanthan gum;

[0033] 23 parts of guar gum;

[0034] 1.5 parts of succinic acid;

[0035] 3.5 parts of sodium sulfite.

[0036] The preparation method of the said xanthan gum-based environment-friendly high temperature and salt-tolerant oilfield oil recovery aid is: respectively weighing 720g of xanthan gum, 230g of guar gum, 15g of succinic acid, and 35g of sodium sulfite. 1000g of biopolymer oilfield oil recovery additives, sealed for use.

Example Embodiment

[0037] Example 2 An improved environmental protection oilfield profile control agent

[0038] The said xanthan gum-based environment-friendly high-temperature- and salt-tolerant oilfield oil production auxiliary agent is composed of the following components and mass parts:

[0039] 50 parts of xanthan gum;

[0040] 42 parts of guar gum;

[0041] 3 parts of adipic acid;

[0042] 5 parts of sodium sulfite.

[0043] The preparation method of the said xanthan gum-based environmentally friendly high temperature and salt-tolerant oilfield oil recovery aid is as follows: respectively weighing 500g xanthan gum, 420g guar gum, 30g adipic acid, and 50g sodium sulfite after fully mixing, and obtaining 1000g of biopolymer oilfield oil recovery additives, sealed for use.

Example Embodiment

[0044] Example 3 An improved environmental protection oilfield profile control agent

[0045] The improved environmental protection oilfield profile control agent is composed of the following components and mass parts:

[0046] 90 parts of xanthan gum;

[0047] 5.0 parts of guar gum;

[0048] 1.0 part of succinic acid;

[0049] 4.0 parts of sodium sulfite.

[0050] The preparation method of the xanthan gum-based environmentally friendly high temperature and salt-tolerant oilfield oil recovery auxiliary agent is: respectively weighing 900g xanthan gum, 50 guar gum, 10g succinic acid, and 40g sodium sulfite after fully mixing, and obtaining 1000g of biopolymer oilfield oil recovery additives, sealed for use.

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Abstract

The invention relates to a xanthan gum-based profile control agent for oil exploitation and a preparation method thereof, and application of a xanthan gum-based profile control agent for oil exploitation. The xanthan gum-based profile control agent is prepared from the following raw materials in parts by weight: 50-90 parts of xanthan gum, 5-45 parts of guar gum, 1-3 parts of binary acid and 1-5 parts of sodium sulfite. The temperature resistance of the profile control agent is up to 110 DEG C, and the salt resistance of the profile control agent is up to 100,000 ppm. The profile control agenthas long-term stability in a high-temperature state as an oil extraction aid, and the average viscosity loss rate is 20% or below after 6 months under the condition of the temperature of 100 DEG C.

Description

technical field [0001] The invention belongs to the technical field of petroleum exploitation, and in particular relates to a profile control agent for petroleum exploitation based on xanthan gum and its preparation method and application. Background technique [0002] The information in the background technology section of the present invention disclosure is only intended to increase the understanding of the general background of the present invention, and is not necessarily regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art known to those skilled in the art. [0003] In recent years, oilfields have been continuously exploited for many years, and many water flooding oilfields have entered the middle and late stages. Due to the heterogeneity of the reservoir and the unfavorable mobility ratio during this period, there is still a large amount of remaining oil in the formation after water flooding, which is generally manifest...

Claims

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Application Information

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IPC IPC(8): C09K8/514E21B43/22
CPCC09K8/514E21B43/16
Inventor 董学前张永刚王伟
Owner SHANDONG FOOD & FERMENT IND RES & DESIGN INST
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