CN105238385A - Antifoaming agent for acid fracturing returned liquid - Google Patents
Antifoaming agent for acid fracturing returned liquid Download PDFInfo
- Publication number
- CN105238385A CN105238385A CN201510657855.6A CN201510657855A CN105238385A CN 105238385 A CN105238385 A CN 105238385A CN 201510657855 A CN201510657855 A CN 201510657855A CN 105238385 A CN105238385 A CN 105238385A
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- CN
- China
- Prior art keywords
- discharge opeing
- defoamer
- return
- acid fracturing
- dosing
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/62—Compositions for forming crevices or fractures
- C09K8/72—Eroding chemicals, e.g. acids
- C09K8/74—Eroding chemicals, e.g. acids combined with additives added for specific purposes
- C09K8/76—Eroding chemicals, e.g. acids combined with additives added for specific purposes for preventing or reducing fluid loss
Abstract
The invention provides an antifoaming agent for an acid fracturing returned liquid. The antifoaming agent comprises, by weight, 10-50% of polysiloxane, 10-30% of polyether, 5-10% of ester, 5-25% of fatty alcohol and the balance water. The antifoaming agent for an acid fracturing returned liquid has a fast antifoaming rate and antifoaming time of less than or equal to 60s, eliminates foam-caused adverse influence in returned liquid recovery and treatment, reduces returned liquid treatment difficulty, satisfies the environmental protection requirements and has good social and economic benefits. The antifoaming agent for an acid fracturing returned liquid can well match with the existing acid fracturing returned liquid in a Changqing zone and does not influence the recovered liquid performances.
Description
Technical field
The invention belongs to one and return the recyclable recycling processing technology field of discharge opeing for acid fracturing in oil-gas field development, particularly relate to a kind of acid fracturing and return discharge opeing defoamer.
Background technology
Pressure break, Acidizing Technology are as gordian technique numerous oil fields popularization and application at home of low permeability oil and gas field exploratory development, in gas field development, for the row of returning of improving fracturing fluid leads, reduce reservoir damage, being everlasting in fracturing liquid, acidizing fluid and adding pore forming material, and accompany nitrogen injection in construction process, arranging outward by producing a large amount of foamover liquid, therefore acid fracturing returns the high and foam stabilization of foam level in discharge opeing, not easily eliminates.
Along with the issuing and implementation of new environmental law, well site acid fracturing return discharge opeing do not land recycling extremely urgent, but the existence returning foam in discharge opeing causes serious impact to the recovery and process of returning discharge opeing, returns the froth breaking problem of discharge opeing, not yet have relevant report at present about acid fracturing.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of bubble rapidly and on returning discharge opeing dosing performance again without impact, having ensured that the acid fracturing of the environmental protection exploitation of oil-gas field returns discharge opeing defoamer.
In order to achieve the above object, the technical scheme that the present invention takes is: a kind of acid fracturing returns discharge opeing defoamer, forms according to the weight percent of following component:
Polysiloxane: 10 ~ 50%;
Polyethers: 10 ~ 30%;
Ester class: 5 ~ 10%;
Fatty alcohol: 5 ~ 25%;
Water: surplus.
The molecular weight of described polysiloxane is 1000 ~ 15000.
The molecular weight of described polyethers is 1000 ~ 8000.
Described ester class is the one in glyceryl monostearate, polyglycerol fatty acid ester or tributyl phosphate.
Fatty alcohol, carbonatoms is between 12 ~ 30.
The present invention adopts above technical scheme, has the following advantages:
One, the acid fracturing in the present invention returns discharge opeing defoamer, and froth breaking is rapid, and foam time is not more than 60s, concrete:
Return discharge opeing for guanidine gum fracturing fluid, when described defoamer dosage is 0.5 ~ 0.8%, foam time is not more than 60s, on returning discharge opeing dosing performance again without impact;
Return discharge opeing for clean fracturing fluid, when described defoamer dosage is 0.5 ~ 0.8%, foam time is not more than 55s, on returning discharge opeing dosing performance again without impact;
Return discharge opeing for gelled acid acidifying, when described defoamer dosage is 0.3 ~ 0.5%, foam time is not more than 40s, on returning discharge opeing dosing performance again without impact;
Can find out to eliminate and return the disadvantageous effect that in discharge opeing recovery and treating processes, foam produces, reduce the intractability returning discharge opeing, meet environmental protection trend instantly, there is good society and economic benefit.
Two, the acid fracturing in the present invention returns discharge opeing defoamer and returns discharge opeing compatibleness well with the long existing acid fracturing of block of celebrating, and reclaims dosing performance without impact to it.
Accompanying drawing explanation
Fig. 1: defoamer adds front and back guanidine gum fracturing fluid and returns discharge opeing dosing heatproof again curve;
Fig. 2: defoamer adds front and back clean fracturing fluid and returns discharge opeing dosing heatproof again curve;
Fig. 3: defoamer adds front and back gelled acid acidifying and returns discharge opeing heatproof curve.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
Embodiment 1
A kind of acid fracturing returns discharge opeing defoamer, forms according to the weight percent of following component:
Polysiloxane: 10 ~ 50%;
Polyethers: 10 ~ 30%;
Ester class: 5 ~ 10%;
Fatty alcohol: 5 ~ 25%;
Water: surplus
In the present embodiment, return discharge opeing for guanidine gum fracturing fluid, clean fracturing fluid returns discharge opeing and discharge opeing is returned in gelled acid acidifying, when described defoamer dosage is 0.3 ~ 0.8%, foam time is not more than 60s, on returning discharge opeing dosing performance again without impact.
Embodiment 2
A kind of acid fracturing returns discharge opeing defoamer, and by weight percentage, this acid fracturing returns discharge opeing defoamer composition and comprises:
Polysiloxane: 40%;
Polyethers: 15%;
Ester class: 8%;
Fatty alcohol: 20%;
Water: surplus.
In the present embodiment, the molecular weight of polysiloxane is 1000, polyethers is isomerous tridecanol atactic polyether TPE-1000, ester class is glyceryl monostearate series, what the present embodiment was concrete selects lauric monoglyceride, and the high fatty alcohol of carbonatoms between 12 ~ 15 selected by fatty alcohol, returns discharge opeing for guanidine gum fracturing fluid, when described defoamer dosage is 0.5%, foam time is 55s; And with to return the compatibleness that discharge opeing joins good, without precipitation, without layering, return before and after defoamer adds discharge opeing again the temperature tolerance of dosing differ and be no more than 5 DEG C; Defoamer add before and after return discharge opeing again dosing foam height difference be no more than 50mm.
In the present embodiment, return discharge opeing for clean fracturing fluid, when described defoamer dosage is 0.5%, foam time is 52s; And with to return the compatibleness that discharge opeing joins good, without precipitation, without layering, return before and after defoamer adds discharge opeing again the temperature tolerance of dosing differ and be no more than 5 DEG C; Defoamer add before and after return discharge opeing again dosing foam height difference be no more than 50mm,
In the present embodiment, return discharge opeing for gelled acid acidifying, when described defoamer dosage is 0.3%, foam time is 38s; And with to return the compatibleness that discharge opeing joins good, without precipitation, without layering, return before and after defoamer adds discharge opeing again the temperature tolerance of dosing differ and be no more than 5 DEG C; Defoamer add before and after return discharge opeing again dosing foam height difference be no more than 50mm.
Embodiment 3
A kind of acid fracturing returns discharge opeing defoamer, and by weight percentage, this acid fracturing returns discharge opeing defoamer composition and comprises:
Polysiloxane: 30%;
Polyethers: 25%;
Ester class: 5%;
High fatty alcohol: 15%;
Water: surplus.
In the present embodiment, the molecular weight of polysiloxane is 3000, polyethers is polypropylene glycol PPG-2000, ester class is polyglycerol fatty acid ester series, what the present embodiment was concrete selects two Polyglycerine dimerization hydroxy stearic acid esters, and the high fatty alcohol of carbonatoms between 15 ~ 18 selected by fatty alcohol, returns discharge opeing for guanidine gum fracturing fluid, when described defoamer dosage is 0.7%, foam time is 50s; And with to return the compatibleness that discharge opeing joins good, without precipitation, without layering, return before and after defoamer adds discharge opeing again the temperature tolerance of dosing differ and be no more than 5 DEG C; Defoamer add before and after return discharge opeing again dosing foam height difference be no more than 50mm.
In the present embodiment, return discharge opeing for clean fracturing fluid, when described defoamer dosage is 0.6%, foam time is 47s; And with to return the compatibleness that discharge opeing joins good, without precipitation, without layering, return before and after defoamer adds discharge opeing again the temperature tolerance of dosing differ and be no more than 5 DEG C; Defoamer add before and after return discharge opeing again dosing foam height difference be no more than 50mm,
In the present embodiment, return discharge opeing for gelled acid acidifying, when described defoamer dosage is 0.4%, foam time is 32s; And with to return the compatibleness that discharge opeing joins good, without precipitation, without layering, return before and after defoamer adds discharge opeing again the temperature tolerance of dosing differ and be no more than 5 DEG C; Defoamer add before and after return discharge opeing again dosing foam height difference be no more than 50mm.
Embodiment 4
A kind of acid fracturing returns discharge opeing defoamer, forms according to the weight percent of following component:
Polysiloxane: 50%;
Polyethers: 10%;
Ester class: 10%;
Fatty alcohol: 5%;
Water: surplus.
In the present embodiment, the molecular weight of polysiloxane is 6000, polyethers is polypropylene glycol PPG-3000, ester class is Tributyl phosphate salt, the high fatty alcohol of carbonatoms between 18 ~ 21 selected by fatty alcohol, return discharge opeing for guanidine gum fracturing fluid, when described defoamer dosage is 0.5%, foam time is 58s; And with to return the compatibleness that discharge opeing joins good, without precipitation, without layering, return before and after defoamer adds discharge opeing again the temperature tolerance of dosing differ and be no more than 5 DEG C; Defoamer add before and after return discharge opeing again dosing foam height difference be no more than 50mm.
In the present embodiment, return discharge opeing for clean fracturing fluid, when described defoamer dosage is 0.5%, foam time is 55s; And with to return the compatibleness that discharge opeing joins good, without precipitation, without layering, return before and after defoamer adds discharge opeing again the temperature tolerance of dosing differ and be no more than 5 DEG C; Defoamer add before and after return discharge opeing again dosing foam height difference be no more than 50mm,
In the present embodiment, return discharge opeing for gelled acid acidifying, when described defoamer dosage is 0.2%, foam time is 40s; And with to return the compatibleness that discharge opeing joins good, without precipitation, without layering, return before and after defoamer adds discharge opeing again the temperature tolerance of dosing differ and be no more than 5 DEG C; Defoamer add before and after return discharge opeing again dosing foam height difference be no more than 50mm.
Embodiment 5
A kind of acid fracturing returns discharge opeing defoamer, and by weight percentage, this acid fracturing returns discharge opeing defoamer composition and comprises:
Polysiloxane: 10%;
Polyethers: 30%;
Ester class: 10%;
Fatty alcohol: 25%;
Water: surplus
In the present embodiment, the molecular weight of polysiloxane is 9000, polyethers is isomerous tridecanol atactic polyether TPE-5000, ester class is glyceryl monostearate series, what the present embodiment was concrete selects lauric monoglyceride, and the high fatty alcohol of carbonatoms between 21 ~ 24 selected by fatty alcohol, returns discharge opeing for guanidine gum fracturing fluid, when described defoamer dosage is 0.5%, foam time is 54s; And with to return the compatibleness that discharge opeing joins good, without precipitation, without layering, return before and after defoamer adds discharge opeing again the temperature tolerance of dosing differ and be no more than 5 DEG C; Defoamer add before and after return discharge opeing again dosing foam height difference be no more than 50mm.
In the present embodiment, return discharge opeing for clean fracturing fluid, when described defoamer dosage is 0.4%, foam time is 49s; And with to return the compatibleness that discharge opeing joins good, without precipitation, without layering, return before and after defoamer adds discharge opeing again the temperature tolerance of dosing differ and be no more than 5 DEG C; Defoamer add before and after return discharge opeing again dosing foam height difference be no more than 50mm,
In the present embodiment, return discharge opeing for gelled acid acidifying, when described defoamer dosage is 0.4%, foam time is 35s; And with to return the compatibleness that discharge opeing joins good, without precipitation, without layering, return before and after defoamer adds discharge opeing again the temperature tolerance of dosing differ and be no more than 5 DEG C; Defoamer add before and after return discharge opeing again dosing foam height difference be no more than 50mm.
Embodiment 6
A kind of acid fracturing returns discharge opeing defoamer, and by weight percentage, this acid fracturing returns discharge opeing defoamer composition and comprises:
Polysiloxane: 20%;
Polyethers: 30%;
Ester class: 10%;
Fatty alcohol: 20%;
Water: surplus.
In the present embodiment, the molecular weight of polysiloxane is 15000, polyethers is isomerous tridecanol atactic polyether TPE-8000, ester class is polyglycerol fatty acid ester series, what the present embodiment was concrete selects two Polyglycerine dimerization hydroxy stearic acid esters, and the high fatty alcohol of carbonatoms between 24 ~ 27 selected by fatty alcohol, returns discharge opeing for guanidine gum fracturing fluid, when described defoamer dosage is 0.8%, foam time is 48s; And with to return the compatibleness that discharge opeing joins good, without precipitation, without layering, as shown in Figure 1 defoamer return before and after adding discharge opeing again the temperature tolerance of dosing differ and be no more than 5 DEG C; Defoamer add before and after return discharge opeing again dosing foam height difference be no more than 50mm.
In the present embodiment, return discharge opeing for clean fracturing fluid, when described defoamer dosage is 0.8%, foam time is 46s; And with to return the compatibleness that discharge opeing joins good, without precipitation, without layering, as shown in Figure 2 defoamer return before and after adding discharge opeing again the temperature tolerance of dosing differ and be no more than 5 DEG C; Defoamer add before and after return discharge opeing again dosing foam height difference be no more than 50mm.
In the present embodiment, return discharge opeing for gelled acid acidifying, when described defoamer dosage is 0.5%, foam time is 30s; And with to return the compatibleness that discharge opeing joins good, without precipitation, without layering, as shown in Figure 3 defoamer return before and after adding discharge opeing again the temperature tolerance of dosing differ and be no more than 5 DEG C; Defoamer add before and after return discharge opeing again dosing foam height difference be no more than 50mm;
Table 1 defoamer adds front and back fracturing liquid and gelled acid and returns the discharge opeing heatproof data of dosing and foam height again
The molecular weight of the polysiloxane described in above-mentioned 1-4 embodiment is 1000 ~ 15000; The molecular weight of described polyethers is 1000 ~ 8000; Described ester class is the one in glyceryl monostearate, polyglycerol fatty acid ester or tributyl phosphate; Fatty alcohol, carbonatoms is between 12 ~ 30.
More than exemplifying is only illustrate of the present invention, does not form the restriction to protection scope of the present invention, everyly all belongs within protection scope of the present invention with the same or analogous design of the present invention.
Claims (5)
1. acid fracturing returns a discharge opeing defoamer, it is characterized in that, forms according to the weight percent of following component:
Polysiloxane: 10 ~ 50%;
Polyethers: 10 ~ 30%;
Ester class: 5 ~ 10%;
Fatty alcohol: 5 ~ 25%;
Water: surplus.
2. a kind of acid fracturing according to claim 1 returns discharge opeing defoamer, it is characterized in that: the molecular weight of described polysiloxane is 1000 ~ 15000.
3. a kind of acid fracturing according to claim 1 returns discharge opeing defoamer, it is characterized in that: the molecular weight of described polyethers is 1000 ~ 8000.
4. a kind of acid fracturing according to claim 1 returns discharge opeing defoamer, it is characterized in that: described ester class is the one in glyceryl monostearate, polyglycerol fatty acid ester or tributyl phosphate.
5. a kind of acid fracturing according to claim 1 returns discharge opeing defoamer, it is characterized in that: described fatty alcohol, carbonatoms is between 12 ~ 30.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510657855.6A CN105238385B (en) | 2015-10-14 | 2015-10-14 | A kind of acid fracturing returns drain antifoaming agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510657855.6A CN105238385B (en) | 2015-10-14 | 2015-10-14 | A kind of acid fracturing returns drain antifoaming agent |
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| CN105238385A true CN105238385A (en) | 2016-01-13 |
| CN105238385B CN105238385B (en) | 2018-07-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107174841A (en) * | 2017-06-05 | 2017-09-19 | 中国石油集团渤海钻探工程有限公司 | Fracturing outlet liquid liquid antifoam agent and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101747880A (en) * | 2009-12-29 | 2010-06-23 | 中国石油天然气集团公司 | Deep-water low-temperature low-density early-strength cementing slurry for well cementation |
| CN104176881A (en) * | 2014-08-07 | 2014-12-03 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Treatment process for up-to-standard release of fracturing flowback liquid and compounding of fracturing liquid |
| CN104293332A (en) * | 2014-09-11 | 2015-01-21 | 长江大学 | Drilling plug liquid for unconventional horizontal well multi-section drilling plug |
-
2015
- 2015-10-14 CN CN201510657855.6A patent/CN105238385B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101747880A (en) * | 2009-12-29 | 2010-06-23 | 中国石油天然气集团公司 | Deep-water low-temperature low-density early-strength cementing slurry for well cementation |
| CN104176881A (en) * | 2014-08-07 | 2014-12-03 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Treatment process for up-to-standard release of fracturing flowback liquid and compounding of fracturing liquid |
| CN104293332A (en) * | 2014-09-11 | 2015-01-21 | 长江大学 | Drilling plug liquid for unconventional horizontal well multi-section drilling plug |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107174841A (en) * | 2017-06-05 | 2017-09-19 | 中国石油集团渤海钻探工程有限公司 | Fracturing outlet liquid liquid antifoam agent and preparation method thereof |
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| CN105238385B (en) | 2018-07-20 |
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Effective date of registration: 20201029 Address after: 100007 Dongcheng District, Dongzhimen, China, North Street, No. 9 Oil Mansion, No. Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Chuanqing Drilling Engineering Co.,Ltd. Address before: 710018 Shaanxi province Xi'an Weiyang Changqing Changqing prosperous Park District Building Room 1207 Patentee before: CHANGQING DOWNHOLE TECHNOLOGY OPERATION COMPANY OF CNPC CHUANQING DRILLING ENGINEERING Co.,Ltd. |
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