CN102337114A - Inorganic boron crosslinking agent and preparation method thereof - Google Patents
Inorganic boron crosslinking agent and preparation method thereof Download PDFInfo
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- CN102337114A CN102337114A CN 201110221072 CN201110221072A CN102337114A CN 102337114 A CN102337114 A CN 102337114A CN 201110221072 CN201110221072 CN 201110221072 CN 201110221072 A CN201110221072 A CN 201110221072A CN 102337114 A CN102337114 A CN 102337114A
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- fracturing fluid
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- boric acid
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Abstract
The invention relates to an inorganic boron crosslinking agent and a preparation method thereof. Currently, a water-based fracturing fluid is generally used for carrying out reservoir reconstruction at home and abroad; a fracturing fluid system with borax as a crosslinking agent has poor temperature resistance and is just used for superficial-reservoir reconstruction; and the temperature resisting capacity of the fracturing fluid with an organic boron crosslinking agent is improved, however, the amount of a fracturing fluid gel breaker is large, gel breaking is difficult, and the permeability damage on a reservoir and a support crack is large relatively. The inorganic boron crosslinking agent comprises the following components in parts by weight: 200-350 parts of water, 100-200 parts of boric acid, 300-400 parts of xylitol, 150-200 parts of sodium hydroxide. The preparation method comprises the following steps: proportioning according to the amounts of the components, adding water in a reaction kettle, and adding boric acid until boric acid is fully dissolved; slowly adding xylitol under the condition of stirring; reacting for 60-90 minutes at the temperature of 40-50 DEG C; and then slowly adding sodium hydroxide until sodium hydroxide is completely dissolved so as to obtain the inorganic boron crosslinking agent. According to the invention, the temperature resistance of the fracturing fluid is improved through improving the pH value of the crosslinking agent; and the delay crosslinking time of the inorganic boron crosslinking agent is prolonged through adding polyol.
Description
Technical field
The present invention relates to a kind of employed inorganic borate crosslinker of yield-increasing technique that is used for the oil and gas reservoir fracturing reform and preparation method thereof.
Background technology
Reservoir reconstruction generally uses aqueous fracturing fluid both at home and abroad at present; Inorganic matter or organic matter with boron are crosslinking agent; Thickening agent mostly adopts guar gum and derivative thereof, but has the following disadvantages: the fracturing fluid system heatproof that with the borax is crosslinking agent is poor, can only be used for more shallow reservoir reconstruction; Adopt the fracturing fluid temperature resistant capability of organic borate cross-linker to be enhanced, but cause fracturing liquid rubber-breaking agent consumption to reach broken glue difficulty greatly, bigger to the permeability injury of reservoir and supporting crack, above-mentioned factor has influenced correctional effect to a certain extent.
Summary of the invention
The technical problem that the present invention solved provides a kind of inorganic borate crosslinker and preparation method thereof, can improve the pH value of the fracturing fluid heat resistance of raising of linking agent and the delay cross linking time of improving inorganic borate crosslinker through the adding polyvalent alcohol.
For solving above-mentioned technical problem, the technical scheme that the present invention takes:
A kind of inorganic borate crosslinker, its special character is: be made up of according to weight part following material:
200～350 parts in water
100～200 parts of boric acid
300～400 parts of Xylitols
150～200 parts in sodium hydroxide.
A kind of preparation method of inorganic borate crosslinker, its special character is: described preparation method joins water in the reaction kettle for to carry out proportioning by above-mentioned consumption; Add boric acid, until dissolving fully, under agitation condition; Slowly add Xylitol; Reacted 60～90 minutes down at 40～50 ℃, slowly add sodium hydroxide then, promptly obtain inorganic borate crosslinker after the dissolving fully.
Compared with prior art, beneficial effect of the present invention:
1, the present invention improves of the fracturing fluid heat resistance through the pH value that improves linking agent.
2, the present invention is through adding the delay cross linking time that polyvalent alcohol improves inorganic borate crosslinker.
Embodiment
Below in conjunction with embodiment the present invention is elaborated.
The present invention is made up of according to weight part following material:
200～350 parts in water
100～200 parts of boric acid
300～400 parts of Xylitols
150～200 parts in sodium hydroxide
Described preparation method joins water in the reaction kettle for to carry out proportioning by above-mentioned consumption, adds boric acid; Until dissolving fully; Under agitation condition, slowly add Xylitol, reacted 60～90 minutes down at 40～50 ℃; Slowly add sodium hydroxide then, promptly obtain inorganic borate crosslinker after the dissolving fully.
Embodiment 1: the present invention is made up of according to weight part following material:
200 parts in water
100 parts of boric acid
300 parts of Xylitols
150 parts in sodium hydroxide
Described preparation method joins water in the reaction kettle for to carry out proportioning by above-mentioned consumption, adds boric acid; Until dissolving fully, under agitation condition, slowly add Xylitol; Reacted 60 minutes down at 40 ℃, slowly add sodium hydroxide then, promptly obtain inorganic borate crosslinker after the dissolving fully.
Embodiment 2:
The present invention is made up of according to weight part following material:
350 parts in water
150 parts of boric acid
400 parts of Xylitols
200 parts in sodium hydroxide
Described preparation method joins water in the reaction kettle for to carry out proportioning by above-mentioned consumption, adds boric acid; Until dissolving fully, under agitation condition, slowly add Xylitol; Reacted 90 minutes down at 50 ℃, slowly add sodium hydroxide then, promptly obtain inorganic borate crosslinker after the dissolving fully.
Embodiment 3:
The present invention is made up of according to weight part following material:
275 parts in water
200 parts of boric acid
350 parts of Xylitols
175 parts in sodium hydroxide
Described preparation method joins water in the reaction kettle for to carry out proportioning by above-mentioned consumption, adds boric acid; Until dissolving fully, under agitation condition, slowly add Xylitol; Reacted 75 minutes down at 45 ℃, slowly add sodium hydroxide then, promptly obtain inorganic borate crosslinker after the dissolving fully.
The linking agent that employing embodiment 2 makes detects according to the technical requirements of standard SY-T6216-1996 pressure break with the linking agent performance provision, and survey report is following:
| Sequence number | Interventions Requested | Unit | Assay |
| 1 | Outward appearance | / | Colourless uniform liquid |
| 2 | Density (30 ℃) | g/cm 3 | 1.11 |
| 3 | The pH value | / | 14.0 |
| 4 | Water-soluble | / | Dissolve each other with water |
| 5 | Cross-linking properties | / | Can form the frozen glue that the useable glass rod hangs |
| 6 | Delay time | ? | 1 ~ 10min is adjustable |
This inorganic borate crosslinker can be crosslinked with melon glue, forms frozen glue; The fracturing liquid heatproof that its melon gum concentration of 0.3% forms can reach more than 100 ℃; The organic borate cross-linker of selling on the market now, inorganic borate crosslinker can form frozen glue with the melon glue with isoconcentration; But this linking agent is compared with inorganic borate crosslinker; Its broken glue in crosslinked back is thorough, and it is less to consume gel breaker.This linking agent and other inorganic borate crosslinker ratios, the crosslinked 0.3% melon gum concentration heatproof of other inorganic boron is lower than 60 ℃ basically, so it is better than other inorganic borate crosslinker heat resistances.
Claims (2)
1. inorganic borate crosslinker is characterized in that: be made up of according to weight part following material:
200～350 parts in water
100～200 parts of boric acid
300～400 parts of Xylitols
150～200 parts in sodium hydroxide.
2. the preparation method of a kind of inorganic borate crosslinker according to claim 1, it is characterized in that: described preparation method joins water in the reaction kettle for to carry out proportioning by above-mentioned consumption; Add boric acid, until dissolving fully, under agitation condition; Slowly add Xylitol; Reacted 60～90 minutes down at 40～50 ℃, slowly add sodium hydroxide then, promptly obtain inorganic borate crosslinker after the dissolving fully.
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| CN 201110221072 CN102337114A (en) | 2011-08-03 | 2011-08-03 | Inorganic boron crosslinking agent and preparation method thereof |
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| CN 201110221072 CN102337114A (en) | 2011-08-03 | 2011-08-03 | Inorganic boron crosslinking agent and preparation method thereof |
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| CN102337114A true CN102337114A (en) | 2012-02-01 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102618248A (en) * | 2012-03-02 | 2012-08-01 | 陕西延长石油(集团)有限责任公司研究院 | High-chelating-degree liquid state boron cross-linking agent for gugnidine glue fracturing fluid |
| CN103045225A (en) * | 2013-01-16 | 2013-04-17 | 陕西延长石油(集团)有限责任公司研究院 | High-efficiency concentrated inorganic boron crosslinked fluid and preparation method thereof |
| CN103305205A (en) * | 2012-03-09 | 2013-09-18 | 中国石油天然气股份有限公司 | Preparation method of polyhydroxy alcohol fracturing fluid crosslinking agent |
| CN105441057A (en) * | 2015-12-03 | 2016-03-30 | 中国石油天然气股份有限公司 | High-temperature-resistant inorganic boron crosslinking agent for fracturing and preparation method thereof |
| CN105567212A (en) * | 2016-01-13 | 2016-05-11 | 东营施普瑞石油工程技术有限公司 | Reusable modified guar gum fracturing fluid system |
| CN105623640A (en) * | 2016-01-13 | 2016-06-01 | 东营施普瑞石油工程技术有限公司 | Preparation method of organoboron high-temperature crosslinking agent used for fracturing |
| CN106467590A (en) * | 2015-08-21 | 2017-03-01 | 中国石油化工股份有限公司 | A kind of pressure break preparation method of SOLID ORGANIC borate crosslinker |
| CN111057532A (en) * | 2018-10-17 | 2020-04-24 | 中国石油化工股份有限公司 | Fracturing crosslinking agent and guar gum fracturing fluid |
| CN112625669A (en) * | 2020-12-03 | 2021-04-09 | 吕晓艳 | Crosslinking agent for oil field |
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| US5217632A (en) * | 1992-05-11 | 1993-06-08 | Zirconium Technology Corporation | Process for preparation and composition of stable aqueous solutions of boron zirconium chelates for high temperature frac fluids |
| CN1524920A (en) * | 2003-02-28 | 2004-09-01 | 中国石油天然气股份有限公司 | Organic boron delayed crosslinking plant gum fracturing fluid |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102618248A (en) * | 2012-03-02 | 2012-08-01 | 陕西延长石油(集团)有限责任公司研究院 | High-chelating-degree liquid state boron cross-linking agent for gugnidine glue fracturing fluid |
| CN102618248B (en) * | 2012-03-02 | 2015-02-18 | 陕西延长石油(集团)有限责任公司研究院 | High-chelating-degree liquid state boron cross-linking agent for gugnidine glue fracturing fluid |
| CN103305205A (en) * | 2012-03-09 | 2013-09-18 | 中国石油天然气股份有限公司 | Preparation method of polyhydroxy alcohol fracturing fluid crosslinking agent |
| CN103305205B (en) * | 2012-03-09 | 2016-04-06 | 中国石油天然气股份有限公司 | Preparation method of polyhydroxy alcohol fracturing fluid crosslinking agent |
| CN103045225A (en) * | 2013-01-16 | 2013-04-17 | 陕西延长石油(集团)有限责任公司研究院 | High-efficiency concentrated inorganic boron crosslinked fluid and preparation method thereof |
| CN103045225B (en) * | 2013-01-16 | 2015-02-18 | 陕西延长石油(集团)有限责任公司研究院 | Concentrated inorganic boron crosslinked fluid and preparation method thereof |
| CN106467590A (en) * | 2015-08-21 | 2017-03-01 | 中国石油化工股份有限公司 | A kind of pressure break preparation method of SOLID ORGANIC borate crosslinker |
| CN105441057A (en) * | 2015-12-03 | 2016-03-30 | 中国石油天然气股份有限公司 | High-temperature-resistant inorganic boron crosslinking agent for fracturing and preparation method thereof |
| CN105567212A (en) * | 2016-01-13 | 2016-05-11 | 东营施普瑞石油工程技术有限公司 | Reusable modified guar gum fracturing fluid system |
| CN105623640A (en) * | 2016-01-13 | 2016-06-01 | 东营施普瑞石油工程技术有限公司 | Preparation method of organoboron high-temperature crosslinking agent used for fracturing |
| CN111057532A (en) * | 2018-10-17 | 2020-04-24 | 中国石油化工股份有限公司 | Fracturing crosslinking agent and guar gum fracturing fluid |
| CN112625669A (en) * | 2020-12-03 | 2021-04-09 | 吕晓艳 | Crosslinking agent for oil field |
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Application publication date: 20120201 |