CN102002355A - Friction-reducing agent of fracturing fluid and preparation method thereof - Google Patents
Friction-reducing agent of fracturing fluid and preparation method thereof Download PDFInfo
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- CN102002355A CN102002355A CN2010105267947A CN201010526794A CN102002355A CN 102002355 A CN102002355 A CN 102002355A CN 2010105267947 A CN2010105267947 A CN 2010105267947A CN 201010526794 A CN201010526794 A CN 201010526794A CN 102002355 A CN102002355 A CN 102002355A
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Abstract
The invention relates to a friction-reducing agent of a fracturing fluid and a preparation method thereof, belonging to the field of oil field production increase. The friction-reducing agent of the fracturing fluid comprises the following components in percentage by weight: 0.6% of polyacrylamide, 8% of polyvinyl alcohol, 5% of surface active agents, 10% of organic solvents, and the balance of water. The friction-reducing agent of the fracturing fluid can effectively reduce the friction drag of the water-base fracturing fluid and has good compatibility with fracturing fluid additives.
Description
Technical field
The present invention relates to a kind of fracturing fluid additive, belong to the oilfield stimulation field, particularly, relate to a kind of fracturing liquid friction reducer and preparation method thereof.
Background technology
The pressure break acid fracturing is the main well stimulation of oil-gas field development.Fracturing liquid is the working fluid of fracturing process, and fracturing liquid pumps into the stratum after the supercharging of high pressure pumping-in equipment, presses off the crack in the stratum, and extends the crack.General fracturing liquid mainly is made up of the additive of viscosifying agent and linking agent and other and reservoir compatibility, because the fracturing liquid main purpose is to carry fracturing propping agents and reduce leak-off, usually adopt linking agent that it is formed frozen glue, have the ability of carrying propping agent preferably and lower filtration capacity.But because the crosslinked back of fracturing liquid viscosity raises rapidly, usually viscosity can reach more than the 1000mPa.S, therefore in tubing string, flow bigger frictional resistance is arranged, at present in petroleum industry hydroxypropyl guanidine gum fracturing fluid system commonly used, after adopting organic boron crosslinked, its frictional resistance is equivalent to clear water usually with about 30% of frictional resistance under the condition.
Hydrocarbon-bearing pool depth of burial in Tarim Basin about 5000-7000m, particularly is the Carbonate Reservoir of representative with the system in Tahe Oilfield generally, needs to improve oil well output by pressure break, acid fracturing volume increase.But because oil reservoir buries deeply, formation temperature is high, sandfrac or to replace acid fracturing process fracturing liquid frictional resistance higher is restricted by uphole equipment infusion ability and pressure-bearing ultimate, and the well stimulation processing parameter has been subjected to certain restriction.For example for the reservoir of degree of depth 6500m, bottom-hole treating pressure if do not take to fall the resistance measure, adopts hydroxypropyl guanidine gum fracturing fluid system ground construction pressure will reach about 100MPa about 100MPa at present, has reached the limit of fracturing unit basically.
Reducing fracturing yield increasing measure operation pressure at present also can be by the method for weighted fracture fluid, but owing to can influence the of the fracturing fluid crosslinked and anti-cutting performance of heatproof on the one hand after adding salt, and drop into also very high, therefore must reduce the frictional resistance of fracturing liquid system, thereby make that well stimulation can smooth implementation.
Summary of the invention
The present invention be directed to the high contradiction of super dark reservoir fracturing acid fracturing process fracturing liquid frictional resistance, a kind of technology that reduces the fracturing liquid frictional resistance has been proposed, integration test and application proof, this technology can effectively reduce of the fracturing fluid frictional resistance, simultaneously can be applicable to super dark ultrahigh-temperature reservoir, and good with other additive compatiblenesies of fracturing liquid system commonly used.
The present invention is by the following technical solutions:
A kind of fracturing liquid friction reducer is characterized in that: be made up of following component by mass percentage:
Polyacrylamide 0.6%
Tensio-active agent 5%
Water surplus.
Above-mentioned Molecular Weight for Polyacrylamide 1,500 ten thousand; The polyvinyl alcohol molecular weight is 250,000; Tensio-active agent is a Dodecyl trimethyl ammonium chloride; Organic solvent is an ethanol.
The preparation method of above-mentioned fracturing liquid friction reducer, its step is as follows: (1) adopts reactor to add entry according to mass percent 76.4%; (2) slowly add mass percent 8% polyvinyl alcohol after being heated to 60 ℃; (3) continuously stirring treated that polyvinyl alcohol dissolved fully in 30 minutes; (4) once add mass percent 5% tensio-active agent, mass percent 10% organic solvent behind the cooling temperature to 30 ℃, stir and mixed in 10 minutes; (5) slowly add mass percent 0.6% polyacrylamide, and continuously stirring was treated that it dissolves fully in 60 minutes and is promptly got the friction reducer product.
Polyacrylamide can form faint cross-linking system with the fracturing liquid linking agent in the technique scheme in fracturing liquid, there are not reaction in polyvinyl alcohol and fracturing liquid linking agent, two kinds of materials can guarantee after adding fracturing liquid, can effectively be external phase is dispersed in the fluid, by distinctive visco-elasticity itself, the following current of molecule long-chain is the stream shape to extending naturally, and its infinitesimal directly influences the motion of fluid infinitesimal.Radial effect masterpiece from the fluid infinitesimal is used on the flow improver infinitesimal, it is distorted, rotational deformation; The intermolecular gravitation of flow improver is resisted above-mentioned reactive force and is reacted on the fluid infinitesimal, change the action direction and the size of fluid infinitesimal, make a part of radial force be converted into following current to axial force, thereby reduced the consumption of idle work, thereby on macroscopic view, played the good result of the drag losses of reducing friction.The effect of tensio-active agent mainly be guarantee system self and with the mixed effective dispersion of fracturing liquid; Organic solvent is that ethanol is the solubleness for guarantee system.
The present invention has following advantage:
(1), can reduce fluidic friction resistance effectively, according to measuring, adopt 0.5-1.5% friction reducer of the present invention can reduce the frictional resistance 70-85% of clear water, resistance reducing effect and friction reducer concentration are proportional in this scope;
(2), good with the fracturing fluid additive compatibleness.General fracturing fluid additive comprises materials such as viscosifying agent, cleanup additive, expansion-resisting agent, emulsion splitter, PH conditioning agent and linking agent, gel breaker, and laboratory experiment shows that this invention friction reducer and above-mentioned additive compatibleness are good.With the compatibility process of the test of viscosifying agent in, can improve the viscosity of fracturing liquid base fluid slightly, strengthen of the fracturing fluid cross-linking properties slightly, this is favourable for the fracturing liquid performance;
(3), do not influence of the fracturing fluid cross-linking properties.Borax, organic boron and zirconium commonly used at present, the linking agent of titanium type have been carried out the influence of this invention friction reducer to cross-linking properties, under normal temperature condition, for of the fracturing fluid crosslinked and not significantly influence of delay performance.
Description of drawings
Fig. 1 is to use the flow curve of fracturing liquid system of the present invention
Fig. 2 is to use mini-frac of the present invention to implement the construction curve of well example
Embodiment
The present invention is described further below in conjunction with embodiment:
(1) the preparation embodiment of fracturing liquid friction reducer
Fracturing liquid friction reducer set of dispense is such as following:
Polyacrylamide 6kg
Polyvinyl alcohol 80kg
Tensio-active agent 50kg
Ethanol 100kg
Water 764kg.
Polyacrylamide can be selected Daqing oil field general petrochemicals factory for use or with the product of molecular weight type;
Polyvinyl alcohol can be selected the product of Sinopec Shanghai petrochemical industry limited-liability company, German Dupont, U.S. Celanese company for use;
Tensio-active agent adopts the product with oil field compression fracture liquid compatibility;
Organic solvent can be selected common commercially available ethanol for use.
Embodiment is as follows for the fracturing liquid friction reducer:
1. adopt 2m
3Reactor adds entry 764kg according to mass percent; 2. slowly add the 80kg polyvinyl alcohol after being heated to 60 ℃; 3. continuously stirring treated that polyvinyl alcohol dissolved fully in 30 minutes; 4. once add 50kg tensio-active agent, 100kg ethanol behind the cooling temperature to 30 ℃, stir and mixed in 10 minutes; 5. slowly add the 6kg polyacrylamide, and continuously stirring was treated that it dissolves fully in 60 minutes and is promptly got friction reducer.
(2) Application Example of fracturing liquid friction reducer
The fracturing liquid prescription is as follows according to mass percent: 0.5% hydroxypropyl guanidine glue+1% cleanup additive+1% emulsion splitter+1% expansion-resisting agent+PH conditioning agent+1.0% friction reducer of the present invention, linking agent adopts 0.3% organic boron system, according to ST/Y5107-2005 aqueous fracturing fluid method of evaluating performance.
Of the fracturing fluid preparation method is as follows: 1. utilize to mix and transfer device to add the water of 500g; 2. the hydroxypropyl guanidine gum fracturing fluid viscosifying agent that slowly adds 2.5g, and continuously stirring mixed it in 15 minutes fully; 3. add 5g cleanup additive+5g emulsion splitter+5g expansion-resisting agent successively; 4. add the PH conditioning agent between the 9-11; 5. add 5g friction reducer of the present invention.
The fracturing liquid flow curve (accompanying drawing 1) that uses the RS600 rheometer to carry out above-mentioned preparation can be seen 100S
-1Under the condition that shearing rate, temperature are 100 ℃, 120 ℃, of the fracturing fluid initial viscosity is more than 1000mPa.S, and under test temperature, its viscosity is all the time greater than more than the 500mPa.S, and friction reducer is for the not influence of of the fracturing fluid heat resistance.
(3) effect embodiment
Accompanying drawing 2 is testing well example construction curve that friction reducer of the present invention is used, used the fracturing liquid system of above-mentioned experiment, add fracturing liquid friction reducer 1% of the present invention, contrast adds the fracturing liquid frictional resistance before and after the friction reducer, after can seeing the fracturing liquid friction reducer of the present invention of adding 1%, make the frictional resistance of original fracturing liquid under equal discharge capacity be reduced to 51.8MPa, reduce and of the fracturing fluid frictional resistance 11% by 58.2MPa.
Claims (6)
1. fracturing liquid friction reducer is characterized in that: be made up of following component by mass percentage:
Polyacrylamide 0.6%
Polyvinyl alcohol 8%
Tensio-active agent 5%
Organic solvent 10%
Water surplus.
2. fracturing liquid friction reducer according to claim 1 is characterized in that: Molecular Weight for Polyacrylamide 1,500 ten thousand.
3. according to the described fracturing liquid friction reducer of claim 1-2, it is characterized in that: the polyvinyl alcohol molecular weight is 250,000.
4. according to the described fracturing liquid friction reducer of claim 1-3, it is characterized in that: tensio-active agent is a Dodecyl trimethyl ammonium chloride.
5. according to the described fracturing liquid friction reducer of claim 1-4, it is characterized in that: organic solvent is an ethanol.
6. the preparation method of the described fracturing liquid friction reducer of claim 1-5, it is characterized in that: this method steps is as follows: (1) adopts reactor to add entry according to mass percent 76.4%; (2) slowly add mass percent 8% polyvinyl alcohol after being heated to 60 ℃; (3) continuously stirring treated that polyvinyl alcohol dissolved fully in 30 minutes; (4) once add mass percent 5% tensio-active agent, mass percent 10% organic solvent behind the cooling temperature to 30 ℃, stir and mixed in 10 minutes; (5) slowly add mass percent 0.6% polyacrylamide, and continuously stirring was treated that it dissolves fully in 60 minutes and is promptly got the friction reducer product.
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103254887A (en) * | 2013-06-09 | 2013-08-21 | 郑建立 | Anti-drag aqueous fracturing fluid preparation |
| CN104212436A (en) * | 2013-06-05 | 2014-12-17 | 中国石油天然气股份有限公司 | Fracturing fluid for mixed water fracturing |
| CN104974300A (en) * | 2014-04-10 | 2015-10-14 | 中国石油化工股份有限公司 | Resistance reducing agent for fracture and preparation method thereof |
| CN104974308A (en) * | 2014-04-10 | 2015-10-14 | 中国石油化工股份有限公司 | Resistance reducing agent for fracture and preparation method thereof |
| CN104974306A (en) * | 2014-04-10 | 2015-10-14 | 中国石油化工股份有限公司 | Resistance reducing agent for fracture and preparation method thereof |
| CN104974299A (en) * | 2014-04-10 | 2015-10-14 | 中国石油化工股份有限公司 | Resistance reducing agent for fracture and preparation method thereof |
| CN105085751A (en) * | 2014-05-21 | 2015-11-25 | S.P.C.M.公司 | Process for friction reduction during ethanol transport |
| CN106047332A (en) * | 2016-06-28 | 2016-10-26 | 江西富诚环保新材料科技有限公司 | Emulsion drag reducing agent for increasing yield of shale oil-gas field and preparation method thereof |
| CN106929109A (en) * | 2017-04-11 | 2017-07-07 | 西安航天动力试验技术研究所 | Liquid rocket drop resistance kerosene and preparation method thereof |
| CN107739601A (en) * | 2017-10-24 | 2018-02-27 | 大连智讯科技有限公司 | A kind of macromolecule friction-reducing agent of fracturing fluid and preparation method thereof |
| CN109135714A (en) * | 2018-09-17 | 2019-01-04 | 佛山市禅城区诺高环保科技有限公司 | A kind of preparation method of long-acting antiseptic resistance-reducing agent |
| CN111154476A (en) * | 2020-01-16 | 2020-05-15 | 彭辉 | Preparation raw material, preparation method and application of online concentration reduction blocking liquid for fracturing |
| CN111394085A (en) * | 2020-04-20 | 2020-07-10 | 成都劳恩普斯科技有限公司 | High-content water-based resistance reducing agent and preparation method thereof |
| CN111410949A (en) * | 2020-04-20 | 2020-07-14 | 成都劳恩普斯科技有限公司 | Integrated viscosity-changing, salt-resistant and resistance-reducing agent and preparation method thereof |
| CN116790240A (en) * | 2023-07-27 | 2023-09-22 | 陕西日新石油化工有限公司 | Preparation method of self-lubricating slick water fracturing fluid |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080093073A1 (en) * | 2006-10-24 | 2008-04-24 | Oscar Bustos | Degradable Material Assisted Diversion |
| CN101528889A (en) * | 2006-08-17 | 2009-09-09 | 普拉德研究及开发股份有限公司 | Friction reduction fluids |
-
2010
- 2010-11-01 CN CN 201010526794 patent/CN102002355B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101528889A (en) * | 2006-08-17 | 2009-09-09 | 普拉德研究及开发股份有限公司 | Friction reduction fluids |
| US20080093073A1 (en) * | 2006-10-24 | 2008-04-24 | Oscar Bustos | Degradable Material Assisted Diversion |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104212436A (en) * | 2013-06-05 | 2014-12-17 | 中国石油天然气股份有限公司 | Fracturing fluid for mixed water fracturing |
| CN103254887B (en) * | 2013-06-09 | 2015-07-01 | 郑建立 | Anti-drag aqueous fracturing fluid preparation |
| CN103254887A (en) * | 2013-06-09 | 2013-08-21 | 郑建立 | Anti-drag aqueous fracturing fluid preparation |
| CN104974306B (en) * | 2014-04-10 | 2017-11-07 | 中国石油化工股份有限公司 | A kind of pressure break friction reducer and preparation method thereof |
| CN104974300A (en) * | 2014-04-10 | 2015-10-14 | 中国石油化工股份有限公司 | Resistance reducing agent for fracture and preparation method thereof |
| CN104974308A (en) * | 2014-04-10 | 2015-10-14 | 中国石油化工股份有限公司 | Resistance reducing agent for fracture and preparation method thereof |
| CN104974306A (en) * | 2014-04-10 | 2015-10-14 | 中国石油化工股份有限公司 | Resistance reducing agent for fracture and preparation method thereof |
| CN104974299A (en) * | 2014-04-10 | 2015-10-14 | 中国石油化工股份有限公司 | Resistance reducing agent for fracture and preparation method thereof |
| CN104974300B (en) * | 2014-04-10 | 2017-02-15 | 中国石油化工股份有限公司 | Resistance reducing agent for fracture and preparation method thereof |
| CN104974308B (en) * | 2014-04-10 | 2017-09-26 | 中国石油化工股份有限公司 | A kind of pressure break friction reducer and preparation method thereof |
| CN105085751A (en) * | 2014-05-21 | 2015-11-25 | S.P.C.M.公司 | Process for friction reduction during ethanol transport |
| CN106047332A (en) * | 2016-06-28 | 2016-10-26 | 江西富诚环保新材料科技有限公司 | Emulsion drag reducing agent for increasing yield of shale oil-gas field and preparation method thereof |
| CN106929109A (en) * | 2017-04-11 | 2017-07-07 | 西安航天动力试验技术研究所 | Liquid rocket drop resistance kerosene and preparation method thereof |
| CN107739601A (en) * | 2017-10-24 | 2018-02-27 | 大连智讯科技有限公司 | A kind of macromolecule friction-reducing agent of fracturing fluid and preparation method thereof |
| CN109135714A (en) * | 2018-09-17 | 2019-01-04 | 佛山市禅城区诺高环保科技有限公司 | A kind of preparation method of long-acting antiseptic resistance-reducing agent |
| CN111154476A (en) * | 2020-01-16 | 2020-05-15 | 彭辉 | Preparation raw material, preparation method and application of online concentration reduction blocking liquid for fracturing |
| CN111394085A (en) * | 2020-04-20 | 2020-07-10 | 成都劳恩普斯科技有限公司 | High-content water-based resistance reducing agent and preparation method thereof |
| CN111410949A (en) * | 2020-04-20 | 2020-07-14 | 成都劳恩普斯科技有限公司 | Integrated viscosity-changing, salt-resistant and resistance-reducing agent and preparation method thereof |
| CN111394085B (en) * | 2020-04-20 | 2021-03-19 | 成都劳恩普斯科技有限公司 | High-content water-based resistance reducing agent and preparation method thereof |
| CN116790240A (en) * | 2023-07-27 | 2023-09-22 | 陕西日新石油化工有限公司 | Preparation method of self-lubricating slick water fracturing fluid |
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