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Solid foam profile control composition, solid foam profile control slurry, preparation method and profile control method thereof

A composition and foam technology, which is applied in the direction of drilling composition, chemical instruments and methods, and mining fluids, can solve the problems of short plugging validity period, general strength, and easy rupture, and achieve the expansion of steam sweeping volume and foaming The effect of large volume and good plugging performance

Active Publication Date: 2020-03-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the strength of the nitrogen foam system is average and it is easy to break, so the validity period of the plugging is short

Method used

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  • Solid foam profile control composition, solid foam profile control slurry, preparation method and profile control method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The solid foam profile control composition of the present embodiment is made up of the following raw materials in parts by weight: 10 parts of ultra-fine oil well cement (median particle size is 6 μm), 10 parts of sulphoaluminate cement, 5 parts of desulfurized gypsum powder, 0.2 Part lauryl amidopropyl betaine (Shanghai Minhao Fine Chemical Co., Ltd.), 0.2 part of alcohol ether carboxylate surfactant AEC-9Na (Qingdao Changxing Chemical Co., Ltd.), 0.2 part of xanthan gum, 1 part of white carbon black, 0.3 parts sodium gluconate.

Embodiment 2

[0035] The solid foam profile control composition of the present embodiment is made up of the following raw materials in parts by weight: 15 parts of ultra-fine oil well cement (median particle size is 3 μm), 5 parts of sulphoaluminate cement, 5 parts of desulfurized gypsum powder, 0.2 Part lauryl amidopropyl betaine (Shanghai Minhao Fine Chemical Co., Ltd.), 0.3 part of alcohol ether carboxylate surfactant AEC-9Na (Qingdao Changxing Chemical Co., Ltd.), 0.1 part of Wenlun glue, 3 parts of nanometer calcium carbonate, 0.2 parts boric acid.

Embodiment 3

[0037] The solid foam profile control composition of the present embodiment is composed of the following raw materials in parts by weight: 10 parts of ultra-fine oil well cement (particle size is 4 μm), 10 parts of sulphoaluminate cement, 3 parts of desulfurized gypsum powder, and 0.1 part of laurel Amidopropyl betaine (Shanghai Minhao Fine Chemical Co., Ltd.), 0.3 parts of alcohol ether carboxylate surfactant AEC-9Na (Qingdao Changxing Chemical Co., Ltd.), 0.1 part of Wenlun rubber, 2 parts of nanometer calcium carbonate, 0.3 part boric acid.

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Abstract

Belonging to the technical field of oil exploitation, the invention particularly relates to a solid foam profile control composition, a solid foam profile control slurry, a preparation method and a profile control method thereof. The solid foam profile control composition is composed of the following raw materials by weight: 10-15 parts of oil well cement, 5-10 parts of sulphoaluminate cement, 3-5parts of desulfurized gypsum, 0.1-0.5 part of a foaming agent, 0.1-0.2 part of a suspending agent, 1-3 parts of a reinforcing agent and 0.1-0.3 part of a retarder. The solid profile control composition is mixed with water, then a gas is injected into the mixture for foaming, then the obtained product can be used for deep profile control and steam channeling sealing of a thermal recovery horizontal well, the foaming volume is large, the high-temperature resistance is strong, and the solid foam profile control composition has high compressive strength.

Description

technical field [0001] The invention belongs to the technical field of petroleum exploitation, and in particular relates to a solid foam profile control composition, a solid foam profile control slurry, a preparation method thereof, and a profile control method. Background technique [0002] Horizontal well is a commonly used recovery technique in the production of heavy oil reservoirs. However, because the open well section of the horizontal well passes through a variety of lithologic bodies with different physical properties, the steam injected under a certain injection-production pressure gradient in the thermal recovery process is prematurely connected along the high-permeability zone between wells, so the steam injection During the process, interwell steam channeling interference is likely to occur between the horizontal well and adjacent wells, thus affecting the development effect of the oil well. And after multiple rounds of steam stimulation, due to the influence o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/506E21B43/22
CPCC09K8/5045C09K8/506E21B43/16C09K2208/10
Inventor 孙迎胜温栋良赵林张喜玲耿超毛为成王瑞张红华余倩
Owner CHINA PETROLEUM & CHEM CORP
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