CN102942319A - Preparation process of super-hydrophobic water control sand - Google Patents
Preparation process of super-hydrophobic water control sand Download PDFInfo
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- CN102942319A CN102942319A CN2012103946590A CN201210394659A CN102942319A CN 102942319 A CN102942319 A CN 102942319A CN 2012103946590 A CN2012103946590 A CN 2012103946590A CN 201210394659 A CN201210394659 A CN 201210394659A CN 102942319 A CN102942319 A CN 102942319A
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Abstract
The invention relates to a preparation process of super-hydrophobic water control sand. The preparation process comprises the following steps of (A) immersing quartz sand or ceramsite in 95% industrial alcohol for 10-20 minutes with stirring, and drying the immersed quartz sand or ceramsite at a room temperature; (B) putting nano-zinc oxide into a semi-batch stirred tank, adding hexamethyl-disilazane (HMDS), stirring and slowly heating to a temperature of 130 DEG C-150 DEG C, and reacting for 2-3 hours, so that surface-modified nano-zinc oxide particles are obtained; and (C) mixing the quartz sand or ceramsite with the surface-modified nano-zinc oxide, a fluorosilicon resin (FSI-100) and tetraethoxysilane, and mixing into the super-hydrophobic water control sand. The preparation process has the characteristics of realizing effective water control while preventing the sand, reducing the general water percentage of oil wells, increasing crude oil output, prolonging stable production time of the oil wells, reducing production cost, etc. The preparation process is widely used in the sand prevention and water control of petroleum exploitation.
Description
Technical field
The present invention relates to the super-hydrophobic control water of oil production well anti-sand method, particularly a kind of preparation technology of super-hydrophobic type control water sand.
Background technology
Implement in the conventional gravel filling sand prevention process process in the oil field, normal quartz sand or the pressure break haydite of using is as filling medium, after being received in oil reservoir, set up the formation compaction band, with screen jacket annular space and three grades of sand control barriers of sand screen, form artificial sand block barrier, for sand control, the control sand of recovery well have been brought into play effect, but it exists following shortcoming or deficiency simultaneously: 1. do not control water function; 2. water ratio sharply rises, and has a strong impact on oil well productivity; 3. a large amount of local waters of lifting cause great energy dissipation and environmental pollution; 4. the steady output of oilwell phase short, cause cost to raise, affect development efficiency or economic benefit.The hydrophobic angle of at present general hydrophobic type control water sand is about 110 °, and water can better be controlled greater than 150 ° in the hydrophobic angle of the super-hydrophobic control water sand of the present invention's preparation, and extension of validity is particularly useful for high moisture gas well and gassiness oil well.The method that prepare at present super hydrophobic surface or coating has a lot, total is summarized as following two classes: use low surface energy material modification uneven surface; Hydrophobic surface is carried out roughened.Yet realize that there are the shortcomings such as technique is too complicated, equipment used is too expensive, condition is too harsh mostly in above processing: such as methods such as electroless plating, galvanic deposit, laser ablations, cost with their preparation super hydrophobic surfaces is too expensive, perhaps can't prepare large-area super hydrophobic surface or coating at all.This also is the major cause that the super-hydrophobic technology of restriction is applied in field produces.
Summary of the invention
The preparation technology who the purpose of this invention is to provide a kind of super-hydrophobic type control water sand adopts super-hydrophobic type control water sand, can also effectively reduce the oil well comprehensive water cut in the time of sand control.
The preparation technology of super-hydrophobic type control water sand of the present invention, comprise the steps: A) quartz sand or haydite surface cleaning, B) nano zinc oxide surface modifying, C) nano zine oxide, fluorine silicon resin FSI-100, tetraethoxy after quartz sand or haydite and the finishing mix mutually, the super-hydrophobic type control of mixing one-tenth water sand, it is characterized in that described steps A) for soaking with 95% industrial alcohol and stirring after 10-20 minute, be positioned over and dry under the room temperature; Described step B) be nano zine oxide to be put into partly mix still, add hexamethyldisilazane HMDS, stir and slowly be warming up to 130 ℃ of-150 ℃ of degree, reaction 2-3h makes the nano zine oxide particulate after the finishing; Described step C) mixes mutually the super-hydrophobic type control of mixing one-tenth water sand for nano zine oxide, fluorine silicon resin FSI-100, tetraethoxy after quartz sand or haydite and the finishing.
Wherein, described step C) in the process of mixing super-hydrophobic type control water sand be a, with steps A) in 0.4-0.8mm quartz sand or haydite 100 Kg-150 Kg and step B after cleaning) dewatering nano zinc oxide fine particles 1 Kg-3 Kg, fluorine silicon resin 3 Kg-5 Kg, tetraethoxy 1.8 Kg-2.1Kg, Virahol 4.5-5.5Kg after the middle finishing add in the stirrer successively, under 90-100 ℃ temperature, mix stirring, chemical reaction occurs simultaneously; Behind b, the mixing 25-50min, in dryer, under 195-200 ℃ temperature the oven dry 9-12min super-hydrophobic type control water sand; C, roll pulverize after weighing sealing pack.Described super-hydrophobic type control water sand is quartz sand or haydite, and its surface is inlaid with the dewatering nano zinc oxide fine particles for the super-hydrophobic layer of coating on this super-hydrophobic layer.
The present invention has following advantage compared with prior art:
1, in sand control, realizes effectively control water, super-hydrophobic control water sand enters oil reservoir with gravpack, filling medium as the control oil-water relative permeability, carry out limited control water, both brought into play the advantage of gravpack technology, given again the performance of conventional process techniques uniqueness---effectively control water in the time of sand control.
2, after super-hydrophobic control water sand enters oil reservoir with gravpack, obviously reduce the oil well composite water cut, increase before the deadline crude production rate.
3, water can better be controlled greater than 150 ° in the hydrophobic angle of the super-hydrophobic control water sand of the present invention's preparation, and extension of validity is particularly useful for high moisture gas well and gassiness oil well, prolongs the steady output of oilwell phase, reduces production costs, and improves development efficiency or economic benefit.
Description of drawings
Fig. 1 is a kind of example structure schematic diagram of the present invention.
Embodiment
A kind of preparation technology of super-hydrophobic type control water sand, comprise the steps: A) quartz sand or haydite surface cleaning, B) nano zinc oxide surface modifying, C) nano zine oxide, fluorine silicon resin FSI-100, tetraethoxy after quartz sand or haydite and the finishing mix mutually, the super-hydrophobic type control of mixing one-tenth water sand, it is characterized in that described steps A) for soaking with 95% industrial alcohol and stirring after 10-20 minute, be positioned over and dry under the room temperature; Described step B) be nano zine oxide to be put into partly mix still, add hexamethyldisilazane HMDS, stir and slowly be warming up to 130 ℃ of-150 ℃ of degree, reaction 2-3h makes the nano zine oxide particulate after the finishing; Described step C) mixes mutually the super-hydrophobic type control of mixing one-tenth water sand for nano zine oxide, fluorine silicon resin FSI-100, tetraethoxy after quartz sand or haydite and the finishing.
Wherein, described step C) in the process of mixing super-hydrophobic type control water sand be a, with steps A) in 0.4-0.8mm quartz sand or haydite 100 Kg-150 Kg and step B after cleaning) dewatering nano zinc oxide fine particles 1 Kg-3 Kg, fluorine silicon resin 3 Kg-5 Kg, tetraethoxy 1.8 Kg-2.1Kg, Virahol 4.5-5.5Kg after the middle finishing add in the stirrer successively, under 90-100 ℃ temperature, mix stirring, follow chemical reaction; Behind b, the mixing 25-50min, in dryer, under 195-200 ℃ temperature the oven dry 9-12min super-hydrophobic type control water sand; C, roll pulverize after weighing sealing pack.
Such as Fig. 1, super-hydrophobic type control water sand is quartz sand or haydite 1, and its surface is inlaid with dewatering nano zinc oxide fine particles 3 for the super-hydrophobic layer 2 of coating on this super-hydrophobic layer 2.
The below is specific embodiment:
Embodiment one
Steps A) for after the immersion of 95% industrial alcohol and stirring 10 minutes, is positioned over and dries under the room temperature; Step B) be nano zine oxide to be put into partly mix still, add hexamethyldisilazane HMDS, stir and slowly be warming up to 130 ℃, reaction 2h makes the nano zine oxide particulate after the finishing; Step C) mixes mutually the super-hydrophobic type control of mixing one-tenth water sand for nano zine oxide, fluorine silicon resin FSI-100, tetraethoxy after quartz sand or haydite and the finishing.
Step C) in the process of mixing super-hydrophobic type control water sand be a, with steps A) in 0.4mm quartz sand or haydite 100 Kg and step B after cleaning) dewatering nano zinc oxide fine particles 1 Kg, fluorine silicon resin 3 Kg, tetraethoxy 1.8 Kg, Virahol 4.5 Kg after the middle finishing add in the stirrer successively, under 90 ℃ temperature, mix stirring, follow chemical reaction; Behind b, the mixing 25min, in dryer, under 195 ℃ temperature the oven dry 9min super-hydrophobic type control water sand; D, roll pulverize after weighing sealing pack.
Embodiment two
Steps A) for after the immersion of 95% industrial alcohol and stirring 15 minutes, is positioned over and dries under the room temperature; Described step B) be nano zine oxide to be put into partly mix still, add hexamethyldisilazane HMDS, stir and slowly be warming up to 140 ℃ of degree, reaction 2.5h makes the nano zine oxide particulate after the finishing; Described step C) mixes mutually the super-hydrophobic type control of mixing one-tenth water sand for nano zine oxide, fluorine silicon resin FSI-100, tetraethoxy after quartz sand or haydite and the finishing.
Step C) in the process of mixing super-hydrophobic type control water sand be a, with steps A) in 0.6mm quartz sand or haydite 125 Kg and step B after cleaning) dewatering nano zinc oxide fine particles 2 Kg, fluorine silicon resin 4 Kg, 2 kilograms of tetraethoxys, Virahol 5Kg after the middle finishing add in the stirrer successively, under 100 ℃ temperature, mix stirring, follow chemical reaction; Behind b, the mixing 40min, in dryer, under 200 ℃ temperature the oven dry 10min super-hydrophobic type control water sand; C, roll pulverize after weighing sealing pack.
Embodiment three
Steps A) for after the immersion of 95% industrial alcohol and stirring 20 minutes, is positioned over and dries under the room temperature; Described step B) be nano zine oxide to be put into partly mix still, add hexamethyldisilazane HMDS, stir and slowly be warming up to 150 ℃ of degree, reaction 3h makes the nano zine oxide particulate after the finishing; Described step C) mixes mutually the super-hydrophobic type control of mixing one-tenth water sand for nano zine oxide, fluorine silicon resin FSI-100, tetraethoxy after quartz sand or haydite and the finishing.
Step C) in the process of mixing super-hydrophobic type control water sand be a, with steps A) in 0.8mm quartz sand or haydite 150 Kg and step B after cleaning) dewatering nano zinc oxide fine particles 3 Kg, fluorine silicon resin 5 Kg, tetraethoxy 2.1Kg, Virahol 5.5Kg after the middle finishing add in the stirrer successively, under 100 ℃ temperature, mix stirring, follow chemical reaction; Behind b, the mixing 50min, in dryer, under 200 ℃ temperature the oven dry 12min super-hydrophobic type control water sand; C, roll pulverize after weighing sealing pack.
Super-hydrophobic type control water sand by above-described embodiment one, embodiment two, embodiment three preparations, calculate it to the regulating power of oil, water two-phase permeability with the NFRR formula, with following verification experimental verification: the rock core that super-hydrophobic type control water sand is made immerses beaker, the little liquid level that exposes of rock core one end, vacuumize, vacuum tightness 0.09 MPa is with the potassium chloride salt water saturation rock core of mass ratio 2%; Simulated formation temperature, pressure are adjusted driving device confined pressure 8MPa, back pressure 0.5 MPa, pump speed 5.0ml/min; The water phase permeability that at first records the quartz sand that is untreated is 1200md and permeability to oil 1050md; The water phase permeability of measuring again the super-hydrophobic type control water sand after processing is that 250md, permeability to oil are 1000md; Calculate NFRR value 〉=3 for qualified according to the NFRR formula:
Rfw=kw processes front/kw and processes rear=1200md/250md=4.80 (1)
Rfo=ko processes front/ko and processes rear=1050md/1000md=1.05 (2)
NFRR=Rfw/Rfo=4.8/1.05=4.57, the NFRR value is 4.57 〉=3, and is qualified.
In the formula: Rfw is the water phase permeability ratio; Rfo is the permeability to oil ratio; Kw is water phase permeability; Ko is permeability to oil; NFRR is standard flow resistance ratio, zero dimension.
Claims (3)
1. the preparation technology of a super-hydrophobic type control water sand, comprise the steps: A) quartz sand or haydite surface cleaning, B) nano zinc oxide surface modifying, C) nano zine oxide, fluorine silicon resin FSI-100, tetraethoxy after quartz sand or haydite and the finishing mix mutually, the super-hydrophobic type control of mixing one-tenth water sand, it is characterized in that described steps A) for soaking with 95% industrial alcohol and stirring after 10-20 minute, be positioned over and dry under the room temperature; Described step B) be nano zine oxide to be put into partly mix still, add hexamethyldisilazane HMDS, stir and slowly be warming up to 130 ℃ of-150 ℃ of degree, reaction 2-3h makes the nano zine oxide particulate after the finishing; Described step C) mixes mutually the super-hydrophobic type control of mixing one-tenth water sand for nano zine oxide, fluorine silicon resin FSI-100, tetraethoxy after quartz sand or haydite and the finishing.
2. the preparation technology of super-hydrophobic type control water sand according to claim 1, it is characterized in that described step C) in the process of mixing super-hydrophobic type control water sand be a, with steps A) in 0.4-0.8mm quartz sand or haydite 100 Kg-150 Kg and step B after cleaning) dewatering nano zinc oxide fine particles 1 Kg-3 Kg, fluorine silicon resin 3 Kg-5 Kg, tetraethoxy 1.8Kg-2.1Kg, Virahol 4.5Kg-5.5Kg after the middle finishing add in the stirrer successively, under 90 ℃-100 ℃ temperature, mix stirring, follow chemical reaction; Behind b, the mixing 25-50min, in dryer, under 195 ℃-200 ℃ temperature the oven dry 9-12min super-hydrophobic type control water sand; C, roll pulverize after weighing sealing pack.
3. the preparation technology of super-hydrophobic type control water sand according to claim 1 is characterized in that described super-hydrophobic type control water sand is quartz sand or haydite, and there is the super-hydrophobic layer of coating on its surface, is inlaid with the dewatering nano zinc oxide fine particles on this super-hydrophobic layer.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014102468A1 (en) * | 2014-02-25 | 2015-08-27 | Jürgen Schneider | Nanostructured sand, process, use |
| CN106866010A (en) * | 2016-12-26 | 2017-06-20 | 湖北大学 | A kind of preparation method of super-hydrophobic sand |
| EP3110544B1 (en) * | 2014-02-25 | 2018-03-21 | Schneider, Ute Margitta | Nanostructured sand and process for producing nanostructured sand |
| CN112267880A (en) * | 2020-11-04 | 2021-01-26 | 中国石油大学(北京) | Horizontal well subsection sand prevention and water control pipe string and design method thereof |
| CN115991981A (en) * | 2021-10-18 | 2023-04-21 | 中国石油化工股份有限公司 | Modified film-forming type scouring-resistant emulsion and application thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102060568A (en) * | 2010-10-13 | 2011-05-18 | 中国石油化工股份有限公司 | Preparation process of loaded water-controlled sand with phase permeability regulating function |
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- 2012-10-17 CN CN2012103946590A patent/CN102942319A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102060568A (en) * | 2010-10-13 | 2011-05-18 | 中国石油化工股份有限公司 | Preparation process of loaded water-controlled sand with phase permeability regulating function |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014102468A1 (en) * | 2014-02-25 | 2015-08-27 | Jürgen Schneider | Nanostructured sand, process, use |
| EP3110544B1 (en) * | 2014-02-25 | 2018-03-21 | Schneider, Ute Margitta | Nanostructured sand and process for producing nanostructured sand |
| US10213764B2 (en) | 2014-02-25 | 2019-02-26 | Ute Margitta Schneider | Nanostructured sand, process for producing nanostructured sand, process for separating a pollutant-water mixture with the nanostructured sand and further uses |
| CN106866010A (en) * | 2016-12-26 | 2017-06-20 | 湖北大学 | A kind of preparation method of super-hydrophobic sand |
| CN106866010B (en) * | 2016-12-26 | 2019-10-11 | 湖北大学 | A kind of preparation method of super-hydrophobic sand |
| CN112267880A (en) * | 2020-11-04 | 2021-01-26 | 中国石油大学(北京) | Horizontal well subsection sand prevention and water control pipe string and design method thereof |
| CN112267880B (en) * | 2020-11-04 | 2021-12-17 | 中国石油大学(北京) | Horizontal well subsection sand prevention and water control pipe string and design method thereof |
| CN115991981A (en) * | 2021-10-18 | 2023-04-21 | 中国石油化工股份有限公司 | Modified film-forming type scouring-resistant emulsion and application thereof |
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Application publication date: 20130227 |