CN102838971A - Foaming agent special for huff and puff of rocket power compound heat carrier - Google Patents
Foaming agent special for huff and puff of rocket power compound heat carrier Download PDFInfo
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- CN102838971A CN102838971A CN2012102922029A CN201210292202A CN102838971A CN 102838971 A CN102838971 A CN 102838971A CN 2012102922029 A CN2012102922029 A CN 2012102922029A CN 201210292202 A CN201210292202 A CN 201210292202A CN 102838971 A CN102838971 A CN 102838971A
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- foaming agent
- heat carrier
- rocket
- compound heat
- huff
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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
The present invention relates to a kind of foaming agent in the oil recovery field, oil field, especially a kind of handle up foaming agent of has channeling passage of the rocket-powered composite heat carrier of selectively blocking off that is used for.
Background technology
Since two thousand five, Daqing oil field is carried out the rocket-powered composite heat carrier mouthful well surplus the test in place 90 of handling up in caster bed heavy oil block, loudspeaker Sa apricot transitional zone accumulative total, has obtained better economic and social benefit.Because nitrogen, CO in the rocket-powered composite heat carrier
2, component such as water vapour viscosity little, the fingering phenomenon takes place more easily than water, inject for a long time; Individual layer is advanced by leaps and bounds seriously; Vertically development degree is poor, is having a strong impact on exploitation effect, and foam is to improve one of best mode that the vertical development degree of rocket-powered composite heat carrier and individual layer advance by leaps and bounds; But conventional foaming agent and rocket-powered composite heat carrier compatibleness are poor, and heat resistance and stability do not reach the test in place requirement.
Summary of the invention
In order to overcome the deficiency in the background technology, the present invention provides a kind of rocket-powered composite heat carrier special-purpose high temperature resistant foaming agent of handling up.The present invention is used for rocket-powered composite heat carrier and handles up and inject well shutoff has channeling advantage passage, can be effectively scurry layer and carries out shutoff injecting gas well gas, makes the gas injection development oil field effective more economically.
This rocket-powered composite heat carrier special-purpose high temperature resistant foaming agent of handling up comprises following component by mass percentage:
Heavy alkylbenzene sulfonic acid sodium: 0.5 ~ 1.0%,
The hydroxypropyl modified-cellulose: 0.1 ~ 0.3%,
All the other are water.
The compound method of this foaming agent: in water, drop into heavy alkylbenzene sulfonic acid sodium in the said ratio of prescription, the limit adds the waterside stirring at low speed, until mixing, adds hydroxypropylcellulose then in proportion, and high-speed stirring is evenly processed mixing solutions.
The method of use of this foaming agent: on ground with rocket-powered composite heat carrier and the foam solution for preparing by volume for 2:1 mixes, mixed liquid is injected in the oil reservoir through injection pump.
The rocket-powered composite heat carrier advantage of shutoff of the present invention fluid-channeling channel; The principle that effective shutoff injection gas well gas is scurried layer position is: 1. under the high temperature weak acid environment, utilize the automatic selectivity of foam to hypertonicity and low oil saturation; Effective reservoir plugging high permeability zone; The rocket-powered composite heat carrier that guarantees follow-up injection turns to, and improves oil displacement efficiency, enlarges swept volume; 2. utilize foaming agent to meet oil and be difficult for blistered principle, injecting the high place of well oil saturation, foaming agent itself is exactly a kind of tensio-active agent, can effectively reduce oil water interfacial tension, thereby improves the oil-displacement capacity of rocket-powered composite heat carrier.
The present invention has following beneficial effect: the foam formulation system that the present invention relates to has been compared following advantage with existing foam allocation system:
1, since in the modification of counterweight sodium alkyl benzene sulfonate and the prescription hydroxypropyl modified-cellulose all can to increase substantially the heat resistance of foam formulation system strong, adapting to FT can be up to more than 300 ℃;
2, the foam volume of foaming agent, liquid phase index such as partly decline obviously is better than the regular foam agent.
Description of drawings
Fig. 1: the foaming agent performance is with the variation rule curve of concentration.
Embodiment
Below in conjunction with embodiment the present invention is described further:
Weigh in the balance and get each 2 parts of 0.9g heavy alkylbenzene sulfonic acid sodium and 0.3g hydroxypropyl modified-celluloses, it is added respectively in the 500mL beaker, add 98.8g water then; Put into magnetic stirring bar, on magnetic stirring apparatus, stir 30min, be mixed with 0.9% the rocket-powered composite heat carrier special-purpose foaming agent solution of handling up; A copy of it is put into high-temperature tank seal,, take out after the cooling to be aging at 300 ℃ of down aging 48h; Transfer device to stir 60s with mixing at a high speed, pour recording volume in the graduated cylinder then into, start stopwatch simultaneously with the rotating speed of 4000r/min; When treating that lye reaches 50mL, write down the final time to be liquid phase transformation period duration.Another part at room temperature sealing is preserved 48h, makes the test foaming agent performance index that use the same method with aged samples, and experimental data is as shown in table 1.
Table 1 foaming agent heat resistance test data
Can find out that from experimental result the performance index of aging front and back foaming agent are consistent basically, explain that the heat resistance of foaming agent is good, and common foaming agent can go bad at 300 ℃ of down aging 48h, loses foam performance.
The performance test of embodiment 2, foaming agent:
Weigh in the balance and get respectively 2 parts in 0.5g heavy alkylbenzene sulfonic acid sodium and 0.1g and hydroxypropyl modified-cellulose; It is added respectively in the 500mL beaker; Add 99.4g water then; Put into magnetic stirring bar, on magnetic stirring apparatus, stir 30min, be mixed with 0.5% the rocket-powered composite heat carrier special-purpose foaming agent solution of handling up.The rocket-powered composite heat carrier special-purpose foaming agent of handling up is made into different concns, carries out foam volume and transformation period test with paddling process, experimental result is seen accompanying drawing 1.
Can be found out by Fig. 1: the liquid phase transformation period of foaming agent of the present invention can reach about 60min; Foam volume can reach 550mL; Reached more than 120 at 300 ℃ of following rock core resistance factors; Shut-off capacity is strong, and common foaming agent foam volume is less than 500 mL, and the liquid phase transformation period is about 10min.Reached about 3 at 300 ℃ of following rock core resistance factors, shut-off capacity is poor; The foam performance of special-purpose foaming agent obviously is superior to other common whipping agent it is thus clear that rocket-powered composite heat carrier is handled up.
Claims (1)
1. a rocket-powered composite heat carrier special-purpose high temperature resistant foaming agent of handling up comprises following component by mass percentage:
Heavy alkylbenzene sulfonic acid sodium: 0.5 ~ 1.0%,
The hydroxypropyl modified-cellulose: 0.1 ~ 0.3%,
All the other are water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102922029A CN102838971A (en) | 2012-08-17 | 2012-08-17 | Foaming agent special for huff and puff of rocket power compound heat carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102922029A CN102838971A (en) | 2012-08-17 | 2012-08-17 | Foaming agent special for huff and puff of rocket power compound heat carrier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102838971A true CN102838971A (en) | 2012-12-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102922029A Pending CN102838971A (en) | 2012-08-17 | 2012-08-17 | Foaming agent special for huff and puff of rocket power compound heat carrier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102838971A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101244372A (en) * | 2007-06-28 | 2008-08-20 | 中国地质大学（北京） | Foaming agent and circulation microvesicle drilling fluids and drilling technique |
| CN102312666A (en) * | 2010-07-06 | 2012-01-11 | 中国石油天然气股份有限公司 | Method for improving oil-water displacement recovery ratio of low-permeable oil reservoir |
-
2012
- 2012-08-17 CN CN2012102922029A patent/CN102838971A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101244372A (en) * | 2007-06-28 | 2008-08-20 | 中国地质大学（北京） | Foaming agent and circulation microvesicle drilling fluids and drilling technique |
| CN102312666A (en) * | 2010-07-06 | 2012-01-11 | 中国石油天然气股份有限公司 | Method for improving oil-water displacement recovery ratio of low-permeable oil reservoir |
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| PB01 | Publication | ||
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Application publication date: 20121226 |