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Foaming agent special for huff and puff of rocket power compound heat carrier

A technology of composite heat carrier and foaming agent, applied in the field of foaming agent, can solve the problems that the temperature resistance and stability cannot meet the requirements of field tests, the degree of longitudinal production is poor, and the production effect is affected, so as to reduce the oil-water interfacial tension and improve Temperature resistance, effect of improving oil displacement efficiency

Inactive Publication Date: 2012-12-26
PETROCHINA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the nitrogen and CO in the rocket power composite heat carrier 2 The viscosity of components such as water vapor and water vapor is small, and fingering phenomenon is more likely to occur than water. After long-term injection, the single-layer breakthrough is serious, and the longitudinal production degree is poor, which seriously affects the mining effect. Foam is to improve the longitudinal production of rocket power composite heat carrier. It is one of the best ways to level and single-layer breakthrough, but the compatibility between the conventional foam agent and the rocket-powered composite heat carrier is poor, and the temperature resistance and stability cannot meet the requirements of the field test

Method used

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  • Foaming agent special for huff and puff of rocket power compound heat carrier
  • Foaming agent special for huff and puff of rocket power compound heat carrier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1, foaming agent temperature resistance performance test:

[0017] Weigh 2 parts each of 0.9g sodium heavy alkylbenzene sulfonate and 0.3g hydroxypropyl modified cellulose with a balance, add them to a 500mL beaker respectively, then add 98.8g water, put a magnetic stirring bar, and stir Stir on the mixer for 30 minutes to prepare a 0.9% rocket-powered composite heat carrier foaming agent solution. Put one part of it into a high-temperature tank and seal it, and age it at 300 ° C for 48 hours. After aging and cooling, take it out and use a high-speed mixer. Stir at a speed of 4000r / min for 60s, then pour into a graduated cylinder to record the volume, and start a stopwatch at the same time, when the eluate reaches 50mL, record the final time as the half-life of the liquid phase. Another copy was sealed and stored at room temperature for 48 hours, and the performance index of the foaming agent was tested by the same method as the aging sample. The experimental...

Embodiment 2

[0021] Embodiment 2, the performance test of foaming agent:

[0022] Weigh 0.5g sodium heavy alkylbenzene sulfonate and 0.1g and 2 parts each of hydroxypropyl modified cellulose with a balance, add them respectively in a 500mL beaker, then add 99.4g water, put into a magnetic stirring bar, and Stir on the stirrer for 30 minutes, and prepare a 0.5% rocket-powered composite heat carrier foaming agent solution. The special foam agent for rocket power composite heat carrier was made into different concentrations, and the foaming volume and half-life were tested by stirring method. The experimental results are shown in the appendix figure 1 .

[0023] Depend on figure 1 It can be seen that the liquid-phase half-life of the foaming agent of the present invention can reach about 60 minutes, the maximum foaming volume can reach 550 mL, and the core resistance factor has reached more than 120 at 300° C. Less than 500 mL, the liquid phase half-life is about 10 minutes. At 300°C, the...

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Abstract

The invention discloses a heat-resistant foaming agent special for huff and puff of a rocket power compound heat carrier. The foaming agent resolves the problems that a conventional foaming agent is poor in compatibility with the rocket power compound heat carrier, and temperature resistant performance and stability cannot meet field test requirements. The foaming agent comprises, by weight, 0.5-1.0% of sodium akylbenzene sulfonate, 0.1-0.3% of hydroxypropyl modified cellulose, and the balance water. The stratum temperature to which the foaming agent can adapt can be up to more than 300 DEG C; and foam volume, liquid phase half life and other indicators of the foaming agent are significantly better than those of a common foaming agent.

Description

technical field [0001] The invention relates to a foaming agent in the field of oil production in oil fields, in particular to a foaming agent for selectively blocking the huff-and-puff air channel of a rocket-powered composite heat carrier. Background technique [0002] Since 2005, Daqing Oilfield has carried out field tests of rocket-powered composite heat carrier huff and puff on more than 90 wells in the Toutai heavy oil block and the Lasa Xing transition zone, and achieved good economic and social benefits. Due to the nitrogen and CO in the rocket power composite heat carrier 2 The viscosity of components such as water vapor and water vapor is small, and fingering phenomenon is more likely to occur than water. After long-term injection, the single-layer breakthrough is serious, and the longitudinal production degree is poor, which seriously affects the mining effect. Foam is to improve the longitudinal production of rocket power composite heat carrier. It is one of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/42
Inventor 张宗雨王贤君王鑫孙国辉刘向斌韩重莲王海静
Owner PETROCHINA CO LTD
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