CN105670581A - Hydrocarbon reservoir protective agent and preparing method thereof - Google Patents
Hydrocarbon reservoir protective agent and preparing method thereof Download PDFInfo
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- CN105670581A CN105670581A CN201610134640.0A CN201610134640A CN105670581A CN 105670581 A CN105670581 A CN 105670581A CN 201610134640 A CN201610134640 A CN 201610134640A CN 105670581 A CN105670581 A CN 105670581A
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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
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
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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
- C09K8/02—Well-drilling compositions
- C09K8/03—Specific additives for general use in well-drilling compositions
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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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/12—Swell inhibition, i.e. using additives to drilling or well treatment fluids for inhibiting clay or shale swelling or disintegrating
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Abstract
The invention relates to a hydrocarbon reservoir protective agent and a preparing method thereof.The hydrocarbon reservoir protective agent contains guar gum, organosilicate, sulfomethal phenolaldehy resin, white oil, calcium salt, alkylphenol ethoxylates, sorbitan fatty acid ester, hydrolysis polyacrylonitrile amine salt and water.The preparing method comprises the steps of 1, heating and evenly mixing water, guar gum, white oil, alkylphenol ethoxylates and sorbitan fatty acid ester to obtain a first mixture; 2, adding sulfomethal phenolaldehy resin, calcium salt, methyl silicate and hydrolysis polyacrylonitrile amine salt to the first mixture and conducting stirring to obtain the hydrocarbon reservoir protective agent.The hydrocarbon reservoir protective agent has high shale hydration expansion inhibiting capacity and dispersing capacity, does not affect the rheological property of drilling fluid, can effectively prevent or delay entering of drilling filtrate into the stratum and prevent or delay pressure increase of formation pores, and prolongs the hole-wall collapsing period.
Description
Technical field
The present invention relates to drilling technology, especially relate to oil gas protective agent.
Background technology
In drilling process; the existence of positive differential pressure produced by drilling fluid is difficult to avoid bored oil-gas Layer is damaged; in order to reduce the degree of formation damage, finally realize zero injury drilling well, so needing to carry out the research of reservoir protection drilling completion liquid system. Studying both at home and abroad at present and mainly having with the system applied: without intrusion, positive colloid (MMH), silicate, methyl glucoside (MEG), formates, full oil base, synthesis base drilling completion liquid system etc.
In existing reservoir protection technology, the most frequently used also important one is exactly temporary shielding method ,barrier building temporary seal incores. But diverting agent used strictly must mate with the pore throat diameter of oil-gas Layer, to reach the purpose built bridge. On the one hand owing to accurate and complete oil-gas Layer aperture data not easily obtains, select particle diameter just with blindness; On the other hand owing to the anisotropism of oil-gas Layer is relatively strong, pore throat diameter Distribution wider range of oil-gas Layer, often lead to selected diverting agent and a certain well section can only be reached preferably stifled effect temporarily, thus can not effectively protect whole oil-gas Layer.
Existing oil layer protective agent there is problems in that the oil layer protective agent of 1. cationic emulsified bitumen class is big on property of drilling fluid impact, and deformability is big, elastic and poor rigidity, and sealing characteristics is poor, and bearing capacity is low; The plugging effect of the oil layer protective agent being 2. polymerized alcohols is poor, and portioned product bubbles; Although 3. better without the sealing characteristics of infiltration or the oil layer protective agent of ultra-low penetration class, but Efficient Adhesive Promotion is notable, it is suppressed that property is poor.
Therefore, for the feature of existing temporary shielding method ,barrier building temporary seal incores, it is very necessary for developing a kind of Protective agent for hydrocarbon reservoir not affected by the pore throat diameter of oil-gas Layer.
Summary of the invention
In order to solve one or more above-mentioned problem, the invention provides following technical scheme.
First aspect, the invention provides a kind of Protective agent for hydrocarbon reservoir, and described Protective agent for hydrocarbon reservoir comprises:
(1) guar gum;
(2) organosilicate;
(3) sulfonated phenol formaldehyde resin;
(4) white oil;
(5) calcium salt;
(6) alkylphenol polyoxyethylene;
(7) sorbitan fatty acid ester;
(8) the hydrolysis fine amine salt of polypropylene; With
(9) water.
Second aspect, the invention provides a kind of method preparing Protective agent for hydrocarbon reservoir, and described method includes:
(1) water, guar gum, white oil, alkylphenol polyoxyethylene and sorbitan fatty acid ester are heated mix homogeneously, obtain the first mixture;
(2) sulfonated phenol formaldehyde resin, calcium salt, organosilicate and the fine amine salt of hydrolysis polypropylene are added in described first mixture and mix homogeneously, obtain described Protective agent for hydrocarbon reservoir.
A kind of new Protective agent for hydrocarbon reservoir that applicant develops based on water-base drilling fluid deposition theory, this products material adopts the organic silicate polymer with high film forming usefulness. Have very strong suppression shale hydration expand, dispersibility, do not affect the rheological property of drilling fluid simultaneously. The dominant mechanism of this product is through approach such as absorption, diffusions by the wider organic silicic acid particle of film forming effect and distribution of sizes, is attached to clay crystal layer end face, and the gap between blocking clay synusia, it is suppressed that the aquation of clay, thus stabilizing clay. This product and clay carry out chemical reaction and produce unbodied bond, make the mineral grains such as clay condense into firmly overall. React with stratum multivalent ion simultaneously, molecular film is formed in borehole wall surface, the similar chemistry of this molecular film " sealing layer ", microcrack can be blocked, thus effectively stoping or delaying drilling fluid filtrate to enter stratum, stop or delay formation void pressure to increase, playing the effect extending the cave-in cycle.
Detailed description of the invention
As it has been described above, the present invention provides a kind of Protective agent for hydrocarbon reservoir in first aspect, described Protective agent for hydrocarbon reservoir comprises:
(1) guar gum;
(2) organosilicate;
(3) sulfonated phenol formaldehyde resin;
(4) white oil;
(5) calcium salt;
(6) alkylphenol polyoxyethylene;
(7) sorbitan fatty acid ester;
(8) the hydrolysis fine amine salt of polypropylene; With
(9) water.
In some embodiments, the consumption of described guar gum is 1 weight portion to 2 weight portions. Described guar gum can be sulfonic group hydroxypropyl guar gum, sulfonic group beet alkali ampholytic guar gum or sulfonic acid carboxymethyl guar gum. In the present invention, the Main Function of described guar gum is auxiliary methyl silicate filming function, improves product rheology; If consumption is excessive, then drilling fluid and product rheology thickening; If consumption is too small, then causing that Protective agent for hydrocarbon reservoir film forming is poor, clay layer gap can not block completely.
In some embodiments, described organosilicate can be C1 to C6 alkyl silicate, it is preferred that the alkali metal salt of C1 to C6 alkyl silicic acids, for instance methane-siliconic acid potassium salt or sodium salt, preferably potassium salt, it is most preferred that be described organosilicate be potassium methyl silicate. C1 to C6 alkyl is such as methyl, ethyl, propyl group, butyl, amyl group or hexyl. Preferably, the consumption of described methyl silicate can be 1 weight portion to 3 weight portions, for instance 1 weight portion, 2 weight portions or 3 weight portions. The inventors discovered that; organosilicate have the advantages that distribution of sizes is wider; when combining use with the oil gas protective agent of Protective agent for hydrocarbon reservoir of the present invention; through approach such as absorption, diffusions; clay crystal layer end face can be attached to; gap between blocking clay synusia, it is suppressed that the aquation of clay, thus stabilizing clay.If consumption is excessive, then affect drilling fluid rheology; If consumption is too small, then can not gap between completely plugged soil layer.
In some embodiments, the consumption of described sulfonated phenol formaldehyde resin can be 10 weight portions to 13 weight portions, for instance is 10 weight portions, 11 weight portions, 12 weight portions or 13 weight portions. In the present invention, the Main Function of described sulfonated phenol formaldehyde resin is to drop dehydration effect; If consumption is excessive, then affect drilling fluid rheology; If consumption is too small, then drilling fluid dehydration increases, and destroys oil-gas Layer.
Described white oil is had no particular limits by the present invention, for instance described white oil can be industrial grade white oil, but in some embodiments, described white oil is preferably 5# white oil.
In some embodiments, the consumption of described alkylphenol polyoxyethylene can be 2 weight portions to 4 weight portions, for instance is 2 weight portions, 3 weight portions or 4 weight portions; The described moieties of described alkylphenol polyoxyethylene can be the carbon number straight chain less than or equal to 16 or branched alkyl, and more preferably carbon number is side chain or the branched alkyl of 8 or 9, for instance octyl group, nonyl. In the present invention, the Main Function of described alkylphenol polyoxyethylene is emulsification, oil phase and aqueous phase is fully combined; If consumption is too small, then emulsifying is insufficient, and product is layered.
In some embodiments, the consumption of described sorbitan fatty acid ester can be 2 weight portions to 4 weight portions, for instance 2 weight portions, 3 weight portions or 4 weight portions. In some embodiments, the fatty acid that the fatty acid moieties of described sorbitan fatty acid ester is divided into carbon number to be 18, it is preferred that fatty acid is (Z)-mono--9-octadecenic acid. In the present invention, the Main Function of described sorbitan fatty acid ester is emulsification, makes aqueous phase and oil phase fully combine; If consumption is too small, then emulsifying is insufficient, and product is layered.
In some embodiments, the consumption of the described fine amine salt of hydrolysis polypropylene is 2 weight portions to 4 weight portions, for instance be 2 weight portions, 3 weight portions or 4 weight portions. In the present invention, the Main Function of the described fine amine salt of hydrolysis polypropylene is to drop dehydration effect; If consumption is excessive, then affect drilling fluid rheology; If consumption is too small, then drilling fluid dehydration increases, and destroys oil-gas Layer.
Some preferred embodiment in, the content of described water is 35 weight portions to 38 weight portions, for instance be 35 weight portions, 36 weight portions, 37 weight portions or 38 weight portions. In the present invention, if the content of water is excessive, then product active substance consumption reduces, and affects performance; If the content of water is too low, then product dissolves insufficient, and impact uses.
In some preferred embodiments; described Protective agent for hydrocarbon reservoir comprises 1 weight portion guar gum to 2 weight portions; 1 weight portion is to the organic silicic acid potassium of 3 weight portions; 10 weight portions are to the sulfonated phenol formaldehyde resin of 13 weight portions; 10 weight portions are to the 5# white oil of 13 weight portions; 30 weight portions are to the calcium carbonate of 33 weight portions; 2 weight portions are to the alkylphenol polyoxyethylene of 4 weight portions; 2 weight portions are to the sorbitan fatty acid ester of 4 weight portions; 2 weight portions are to the fine amine salt of hydrolysis polypropylene of 4 weight portions, and 35 weight portions are to the water of 38 weight portions.
In some further preferred embodiments, described Protective agent for hydrocarbon reservoir comprises the fine amine salt of hydrolysis polypropylene of the water of 37 weight portions, the guar gum of 1 weight portion, the white oil of 11 weight portions, the alkylphenol polyoxyethylene of 3 weight portions, the sorbitan fatty acid ester of 3 weight portions, the sulfonated phenol formaldehyde resin of 11 weight portions, the calcium carbonate of 32 weight portions, the organic silicic acid potassium of 1.5 weight portions and 3.5 weight portions.
The present invention additionally provides a kind of method preparing Protective agent for hydrocarbon reservoir in second aspect, and described method includes:
(1), after water, guar gum, white oil, alkylphenol polyoxyethylene and sorbitan fatty acid ester being heated mix homogeneously, the first mixture is obtained;
(2) sulfonated phenol formaldehyde resin, calcium salt, organosilicate and the fine amine salt of hydrolysis polypropylene added in described first mixture and stir, obtaining described Protective agent for hydrocarbon reservoir.
At some embodiments extremely, the heating-up temperature of step (1) is 60 DEG C to 80 DEG C. In some embodiments, the heating-up temperature of step (1) is 70 DEG C. In other embodiment, the mixing time in step (2) is 1 to 5 hour, more preferably 2 hours.
If not otherwise specified, percentage ratio mentioned in this article and part represent percentage by weight and weight portion respectively.
Hereafter by the mode of embodiment, the present invention will be further detailed, but the present invention be not limited to these embodiments.
Embodiment 1:
Take 1 part (weight portion, lower with) as the sulfonic acid carboxymethyl guar gum of guar gum, 11 parts as the 5# white oil of white oil, 3 parts be dissolved in the water of 37 parts as the alkylphenol polyoxyethylene-10 of alkylphenol polyoxyethylene, 3 parts of sorbitan oleates as sorbitan fatty acid ester. Heating stirs to 70 DEG C. Adding 11 parts as sulfonated-pheno-formoldehyde resin powder-I (powder) of sulfonated phenol formaldehyde resin, 32 parts of granularities is the calcium carbonate of 600-1000 order, 1.5 parts of potassium methyl silicates, 3.5 parts of hydrolysis fine amine salt of polypropylene (purchased from Chengdu Long Yu Chemical Co., Ltd.), stirs 2 hours. " Protective agent for hydrocarbon reservoir " can be produced.
Measuring the base slurry casting bed immersion depth of obtained Protective agent for hydrocarbon reservoir, sample slurry casting bed immersion depth, blank rock core line swell increment and sample rock core line swell increment, result is listed in the table below in 2.
Embodiment 2:
Take 0 part of sulfonic acid carboxymethyl guar gum, 11 parts of 5# white oils, 3 parts of alkylphenol polyoxyethylene-10,3 parts of sorbitan oleates are dissolved in 37 parts of water. Heating stirs to 70 DEG C. Add 11 parts of sulfonated-pheno-formoldehyde resins powder-I (powder), 32 parts of granularities are the calcium carbonate of 600-1000 order, 1.5 parts of potassium methyl silicates, 3.5 parts of hydrolysis fine amine salt of polypropylene (purchased from Chengdu Long Yu Chemical Co., Ltd.), stir 2h. " Protective agent for hydrocarbon reservoir " can be produced.
Embodiment 3:
Take 0.5 part of sulfonic acid carboxymethyl guar gum, 11 parts of 5# white oils, 3 parts of alkylphenol polyoxyethylene-10,3 parts of sorbitan oleates are dissolved in 37 parts of water. Heating stirs to 70 DEG C. Add 11 parts of sulfonated-pheno-formoldehyde resins powder-I (powder), 32 parts of granularities are the calcium carbonate of 600-1000 order, 1.5 parts of potassium methyl silicates, 3.5 parts of hydrolysis fine amine salt of polypropylene (purchased from Chengdu Long Yu Chemical Co., Ltd.), stir 2h. " Protective agent for hydrocarbon reservoir " can be produced.
Embodiment 4 to 11
Except table 1 and the content noted thereafter, the mode identical with embodiment 1 is adopted to be carried out example 4 to 11.
Table 1
Note:
A: use potassium silicate to replace potassium methyl silicate;
B: use ethyl potassium silicate to replace potassium methyl silicate;
C: use sodium methyl silicate to replace potassium methyl silicate;
Table 2
Measuring method:
Casting bed immersion depth
Base is starched: adding 16.0g sodium bentonite, the ratio of 0.8g sodium carbonate by every glass of 400mL distilled water, high-speed stirred 20min, at (25 ± 3) DEG C curing in airtight condition 24h.
Sample is starched: measures 400mL base slurry, adds 8mL sample, high-speed stirred 20min.
Casting bed immersion depth: by 200cm3Sand (is crossed 0.28mm standard screen) and is poured FA type into without infiltration filtration device, then measures 250mL base slurry respectively, measures filtrate under 30min, 0.7MPa and immerses the degree of depth of casting bed.
Rock core line swell increment
Prepared by rock core: weigh at (105 ± 3) DEG C dry 2h the calcium bentonite 10g being cooled to room temperature, loads in pressing mold, keeps pressure 4MPa voltage stabilizing 5min to prepare rock core on forcing press.
Sample is starched: weighs 50g sample, is slowly added in 20mL distilled water, stirring while adding, so as to after being uniformly dispersed, continue stirring 10min, at about 25 DEG C curing in airtight condition 2h.
Rock core line swell increment: adopt NP 01 type room temperature swell increment analyzer, measures the line swell increment of distilled water and sample magmatic rock heart 8h under normal temperature and pressure.
By above it can be seen that embodiment 1 effect is best; Embodiment 2 and embodiment 3: reduce or cancel guar gum, cause that casting bed immersion depth and rock core line swell increment increase; Embodiment 4 and embodiment 5: decrease potassium methyl silicate, cause that casting bed immersion depth and rock core line swell increment increase; Embodiment 6 and embodiment 8: because potassium methyl silicate or sulfonated-pheno-formoldehyde resin powder dosage are excessive, cause that product is without mobility, do not had experiment condition; Embodiment 7: decrease sulfonated-pheno-formoldehyde resin powder dosage, causes that casting bed immersion depth increases; Embodiment 9, embodiment 10 and embodiment 11: select all the other silicate to substitute potassium methyl silicate, have similar effect, but effect be not best.
Claims (13)
1. a Protective agent for hydrocarbon reservoir, described Protective agent for hydrocarbon reservoir comprises:
Guar gum;
Organosilicate;
Sulfonated phenol formaldehyde resin;
White oil;
Calcium salt;
Alkylphenol polyoxyethylene;
Sorbitan fatty acid ester;
The hydrolysis fine amine salt of polypropylene; With
Water.
2. Protective agent for hydrocarbon reservoir according to claim 1, wherein, described Protective agent for hydrocarbon reservoir comprises:
1 weight portion is to the guar gum of 2 weight portions;
1 weight portion is to the organosilicate of 3 weight portions;
10 weight portions are to the sulfonated phenol formaldehyde resin of 13 weight portions;
10 weight portions are to the white oil of 13 weight portions;
30 weight portions are to the calcium salt of 33 weight portions;
2 weight portions are to the alkylphenol polyoxyethylene of 4 weight portions;
2 weight portions are to the sorbitan fatty acid ester of 4 weight portions;
2 weight portions are to the fine amine salt of hydrolysis polypropylene of 4 weight portions; With
35 weight portions are to the water of 38 weight portions.
3. Protective agent for hydrocarbon reservoir according to claim 2, wherein, described Protective agent for hydrocarbon reservoir comprises:
The guar gum of 1 weight portion;
The organosilicate of 1.5 weight portions;
The sulfonated phenol formaldehyde resin of 11 weight portions;
The white oil of 11 weight portions;
The calcium carbonate of 32 weight portions;
The alkylphenol polyoxyethylene of 3 weight portions;
The sorbitan fatty acid ester of 3 weight portions;
The fine amine salt of hydrolysis polypropylene of 3.5 weight portions; With
The water of 37 weight portions.
4. Protective agent for hydrocarbon reservoir according to any one of claim 1 to 3, wherein, described guar gum selects the group of free sulfonic group hydroxypropyl guar gum, sulfonic group beet alkali ampholytic guar gum or sulfonic acid carboxymethyl guar gum composition.
5. Protective agent for hydrocarbon reservoir according to any one of claim 1 to 3, wherein, described white oil is 5# white oil.
6. Protective agent for hydrocarbon reservoir according to any one of claim 1 to 3, wherein, described calcium salt is calcium carbonate.
7. Protective agent for hydrocarbon reservoir according to any one of claim 1 to 3, wherein, described alkylphenol polyoxyethylene is alkylphenol polyoxyethylene-10.
8. Protective agent for hydrocarbon reservoir according to any one of claim 1 to 3, wherein, described sorbitan fatty acid ester is sorbitan oleate.
9. Protective agent for hydrocarbon reservoir according to any one of claim 1 to 3, wherein, described organosilicate is C1 to C6 alkyl silicate, more preferably the alkali metal salt of C1 to C6 alkyl silicic acids, it is most preferred that potassium methyl silicate.
10. the method preparing Protective agent for hydrocarbon reservoir, described method includes:
(1), after water, guar gum, white oil, alkylphenol polyoxyethylene and sorbitan fatty acid ester being heated mix homogeneously, the first mixture is obtained;
(2) sulfonated phenol formaldehyde resin, calcium salt, methyl silicate and the fine amine salt of hydrolysis polypropylene added in described first mixture and stir, obtaining described Protective agent for hydrocarbon reservoir.
11. method according to claim 10, wherein, the heating-up temperature of step (1) is 60 DEG C to 80 DEG C.
12. method according to claim 10, wherein, the heating-up temperature of step (1) is 70 DEG C.
13. according to claim 10 to 12 to the method described in any one, wherein, the mixing time in step (2) is 1 to 5 hour, more preferably 2 hours.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108893100A (en) * | 2018-08-22 | 2018-11-27 | 石家庄华莱鼎盛科技有限公司 | Drilling fluid lubrication inhibitor nanometer ester group hydrate and preparation method thereof |
| CN110564380A (en) * | 2019-09-28 | 2019-12-13 | 中国石油集团川庆钻探工程有限公司钻井液技术服务公司 | Inhibitor for drilling fluid and preparation method thereof |
| CN112592699A (en) * | 2021-01-27 | 2021-04-02 | 陕西延长石油（集团）有限责任公司 | Low-damage drilling fluid suitable for ultra-low permeability reservoir and preparation method thereof |
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| CN101275070A (en) * | 2007-12-26 | 2008-10-01 | 中国石油集团钻井工程技术研究院 | Organic silicate semi-permeable diaphragm agent and preparation thereof |
| CN101319136A (en) * | 2007-06-07 | 2008-12-10 | 中国石油化工股份有限公司 | Ahead fluid for gas-liquid conversion artesian well and its use method |
| CN103820085A (en) * | 2012-11-19 | 2014-05-28 | 北京宝沃石油技术有限责任公司 | Oil layer protective agent for drilling fluid and production method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101319136A (en) * | 2007-06-07 | 2008-12-10 | 中国石油化工股份有限公司 | Ahead fluid for gas-liquid conversion artesian well and its use method |
| CN101275070A (en) * | 2007-12-26 | 2008-10-01 | 中国石油集团钻井工程技术研究院 | Organic silicate semi-permeable diaphragm agent and preparation thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108893100A (en) * | 2018-08-22 | 2018-11-27 | 石家庄华莱鼎盛科技有限公司 | Drilling fluid lubrication inhibitor nanometer ester group hydrate and preparation method thereof |
| CN110564380A (en) * | 2019-09-28 | 2019-12-13 | 中国石油集团川庆钻探工程有限公司钻井液技术服务公司 | Inhibitor for drilling fluid and preparation method thereof |
| CN112592699A (en) * | 2021-01-27 | 2021-04-02 | 陕西延长石油（集团）有限责任公司 | Low-damage drilling fluid suitable for ultra-low permeability reservoir and preparation method thereof |
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