CN103045226A - Resistance reducing agent and preparation method thereof, and slickwater fracturing fluid using resistance reducing agent and preparation method thereof - Google Patents
Resistance reducing agent and preparation method thereof, and slickwater fracturing fluid using resistance reducing agent and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a resistance reducing agent and a preparation method thereof, and a slickwater fracturing fluid using the resistance reducing agent and a preparation method thereof. The resistance reducing agent comprises the following components in percentage by mass: 10-40% of polyoxyethylene, 40-85% of organic solvent, 0-10% of nonionic surfactant and 0-10% of dispersant; and the slickwater fracturing fluid comprises the following components in percentage by mass: 0.05-0.2% of resistance reducing agent, 0.2-0.5% of discharge aiding agent, 1.0-3.0% of anti-swelling agent, 0.1-0.3% of bactericide and the balance of clear water. The resistance reducing agent disclosed by the invention can greatly reduce friction resistance of a fracturing pipeline and near-wellhole friction resistance, is low in cost and has favorable compatibility with formation water and other additives; and the slickwater fracturing fluid using the resistance reducing agent can keep better resistance reducing property and heat stability and simultaneously has a lower resistance reducing agent concentration, thereby having remarkable economic benefits for shale oil-gas reservoirs to be reconstructed on a large scale.
Description
Technical field
The invention belongs to oil production fracturing liquid technical field, be specifically related to a kind of friction reducer and preparation method thereof, also relate to simultaneously slippery water fracturing liquid that uses this friction reducer and preparation method thereof.
Background technology
Since 21 century, in the face of huge energy demand, world's oil gas Productivity Construction and produce but relative deficiency is so people begin to pay close attention to more the non-conventional oil natural gas source.Wherein, according to world's gas magazine forecast and statistic in 2009, worldwide shale gas reserves are about 4.6 * 10
14m
3, stock number is very abundant.
Because the shale Hydrocarbon Reservoir Permeability is ultralow, thickness is large, natural fracture is grown, although natural fracture can form certain seepage channel, but usually can't provide the economic exploitation required seepage channel, most oily shale all need to implement waterfrac treatment just can reach commercial mining value, but conventional polymer-based carbon fracturing fluid system (modifyed guar gum etc.), owing to contain water-insoluble and conventional colloid residue, easily cause the grievous injury of shale reservoir, fracturing liquid is cross-linked to form the formation that is unfavorable for stitching net behind the frozen glue, and can greatly be increased in the frictional resistance in the tubing string, therefore preparation of construction is brought restriction.
Abroad for the transformation of shale oil gas reservoir, mainly adopt the slippery water system at present, key ingredient friction reducer and domestic pressure break expansion-resisting agent compatibleness commonly used are relatively poor in the system, and its whole system cost is higher again, are not suitable for extensive fracturing reform and use; Riverfrac treatment, active water pressure break etc. are mainly adopted in domestic transformation for the shale oil gas reservoir, by extensive, large discharge capacity (the highest 12m
3/ min) injection mode is to reach the purpose that forms map cracking.But riverfrac treatment, active water pressure break construction frictional resistance under large discharge capacity is high, therefore, needs development research to go out a kind of friction reducer of high efficiency, low cost, thereby reduces operation pressure, raising construction technology success ratio and economic benefit.
Summary of the invention
The purpose of this invention is to provide a kind of friction reducer and preparation method thereof, this friction reducer energy decrease pressure break pipeline and nearly well frictional resistance are beneficial to the formation of shale oil gas reservoir seam net, and be with low cost, good with other additive compatiblenesies.
Second purpose of the present invention provides a kind of slippery water fracturing liquid that uses this friction reducer and preparation method thereof.
In order to realize above purpose, the technical solution adopted in the present invention is: a kind of friction reducer, and the composition of this friction reducer and mass percent are:
The molecular weight of described polyoxyethylene is 500,000～6,000,000.
Described organic solvent is white oil.
Described nonionogenic tenside is any one or the combination in sorbester p17, the tween 80.
Described dispersion agent is silicon-dioxide.
A kind of preparation method of friction reducer comprises the following steps:
1) nonionogenic tenside is added in the organic solvent, 50～100rpm slowly is stirred to and mixes;
2) add dispersion agent, 50～100rpm slowly stirs 5min, rear 1500～2000rpm high-speed stirring 5min;
3) reduce stirring velocity, slowly add polyoxyethylene, 1000～1500rpm rapid stirring 10min dissolves it fully, namely gets described friction reducer.
A kind of slippery water fracturing liquid that uses above-mentioned friction reducer, this fracturing liquid forms and mass percent is:
The composition of described cleanup additive and mass percent are: polyoxyethylene nonylphenol ether 3.0%～5.0%, methyl alcohol 20%～30%, surplus are water.
Described expansion-resisting agent is Repone K; Described sterilant is formaldehyde or glutaraldehyde.
The of the fracturing fluid preparation method of a kind of slippery water comprises the following steps:
1) sterilant is added in the clear water, continuously stirring mixes it;
2) slowly add friction reducer in clear water, 500～800rpm slowly stirs 20min continuously mixes it;
3) add successively cleanup additive, expansion-resisting agent, 500～800rpm slowly is stirred to and mixes, and namely gets described slippery water fracturing liquid.
Polyoxyethylene is the well-regulated spirane structure of line style that epoxyethane ring-expansion polymerization forms, the macromole of this softness is in solution unfolds state, deformation occurs easily, macromole with certain-length side chain, hydrodynamic volume in solution is larger, will increase drag-reduction effect, and polymer molecule is stretched in turbulent boundary layer and is orientated simultaneously, fluid viscosity can increase at the orientation place, thereby has realized drag-reduction effect.The effect of nonionogenic tenside mainly is emulsifying effect.The effect of dispersion agent is to guarantee polyoxyethylene and the mixed effective dispersion of organic solvent.Organic solvent is to mix for guarantee system.
Friction reducer of the present invention adopts the preparation of polyoxyethylene and inorganic solvent, and cost is low, resistance-reducing performance good, can be effectively reducing the frictional resistance of fluid in pipeline and pit shaft under the lower concentration, and good with other additive compatiblenesies, generate without floss and precipitation.
The slippery water fracturing liquid that this friction reducer and cleanup additive, expansion-resisting agent, sterilant are mixed with keeps preferably resistance-reducing performance and thermostability; Friction reducer concentration is 0.05～0.2%, reduces 55～60% of frictional resistance under the laboratory experiment condition; Simultaneously lower friction reducer concentration, the shale oil gas reservoir for needing large-scale redevelopment greatly reduces construction cost, remarkable in economical benefits.
Description of drawings
Fig. 1 is that the of the fracturing fluid resistance-reducing yield of experimental example 1 slippery water of the present invention is with the displacement variation relation curve.
Embodiment
The invention will be further described below in conjunction with embodiment:
Consisting of of the friction reducer of present embodiment:
Molecular weight is 500,000 polyoxyethylene 40%
The preparation method of this friction reducer is: polyoxyethylene is slowly added in the white oil, and 1500rpm rapid stirring 10min dissolves it fully, namely gets described friction reducer.
Consisting of of the friction reducer of present embodiment:
Molecular weight is 6,000,000 polyoxyethylene 15%
White oil 85%.
The preparation method of this friction reducer is: polyoxyethylene is slowly added in the white oil, and 1000rpm rapid stirring 10min dissolves it fully, namely gets described friction reducer.
Consisting of of the friction reducer of present embodiment:
Molecular weight is 3,000,000 polyoxyethylene 30%
The preparation method of this friction reducer is: polyoxyethylene is slowly added in the white oil, and 1300rpm rapid stirring 10min dissolves it fully, namely gets described friction reducer.
Embodiment 4
Consisting of of the friction reducer of present embodiment:
Molecular weight is 1,000,000 polyoxyethylene 40%
The preparation method of this friction reducer comprises the following steps:
1) sorbester p17 is added in the white oil, 100rpm slowly is stirred to and mixes;
2) add silicon-dioxide, 100rpm slowly stirs 5min, rear 1700rpm high-speed stirring 5min;
3) reduce stirring velocity, slowly add polyoxyethylene, 1000rpm rapid stirring 10min dissolves it fully, namely gets described friction reducer.
Embodiment 5
Consisting of of the friction reducer of present embodiment:
Molecular weight is 5,000,000 polyoxyethylene 10%
White oil 85%
Tween 80 0.1%
Silicon-dioxide 4.9%.
The preparation method of this friction reducer comprises the following steps:
1) tween 80 is added in the white oil, 50rpm slowly is stirred to and mixes;
2) add silicon-dioxide, 50rpm slowly stirs 5min, rear 2000rpm high-speed stirring 5min;
3) reduce stirring velocity, slowly add polyoxyethylene, 1500rpm rapid stirring 10min dissolves it fully, namely gets described friction reducer.
Embodiment 6
Consisting of of the friction reducer of present embodiment:
Molecular weight is 2,000,000 polyoxyethylene 20%
White oil 75%
Sorbester p17 4.9%
Silicon-dioxide 0.1%.
The preparation method of this friction reducer comprises the following steps:
1) sorbester p17 is added in the white oil, 70rpm slowly is stirred to and mixes;
2) add silicon-dioxide, 70rpm slowly stirs 5min, rear 1500rpm high-speed stirring 5min;
3) reduce stirring velocity, slowly add polyoxyethylene, 1200rpm rapid stirring 10min dissolves it fully, namely gets described friction reducer.
Embodiment 7
Consisting of of the friction reducer of present embodiment:
The preparation method of this friction reducer comprises the following steps:
1) tween 80, sorbester p17 are added in the white oil, 80rpm slowly is stirred to and mixes;
2) add silicon-dioxide, 80rpm slowly stirs 5min, rear 1800rpm high-speed stirring 5min;
3) reduce stirring velocity, slowly add polyoxyethylene, 1300rpm rapid stirring 10min dissolves it fully, namely gets described friction reducer.
Embodiment 8
Present embodiment uses the friction reducer of embodiment 1 preparation to prepare the slippery water fracturing liquid, and it consists of:
The composition of cleanup additive and massfraction are: polyoxyethylene nonylphenol ether 3%, the weight of methyl alcohol are 25%, water 72%.
This slippery water is of the fracturing fluid preparation method comprise the following steps:
1) formaldehyde is added in the clear water, continuously stirring mixes it;
2) slowly add embodiment 1 made friction reducer in clear water, 700rpm slowly stirs 20min continuously mixes it;
3) add successively cleanup additive, Repone K, 700rpm slowly is stirred to and mixes, and namely gets described slippery water fracturing liquid.
Embodiment 9
Present embodiment uses the friction reducer of embodiment 4 preparations to prepare the slippery water fracturing liquid, and it consists of:
The composition of cleanup additive and massfraction are: polyoxyethylene nonylphenol ether 4%, the weight of methyl alcohol are 20%, water 76%.
This slippery water is of the fracturing fluid preparation method comprise the following steps:
1) glutaraldehyde is added in the clear water, continuously stirring mixes it;
2) slowly add embodiment 4 made friction reducers in clear water, 800rpm slowly stirs 20min continuously mixes it;
3) add successively cleanup additive, Repone K, 800rpm slowly is stirred to and mixes, and namely gets described slippery water fracturing liquid.
Present embodiment uses the friction reducer of embodiment 5 preparations to prepare the slippery water fracturing liquid, and it consists of:
The composition of cleanup additive and massfraction are: polyoxyethylene nonylphenol ether 5%, the weight of methyl alcohol are 28%, water 67%.
This slippery water is of the fracturing fluid preparation method comprise the following steps:
1) formaldehyde is added in the clear water, continuously stirring mixes it;
2) slowly add embodiment 5 made friction reducers in clear water, 500rpm slowly stirs 20min continuously mixes it;
3) add successively cleanup additive, Repone K, 500rpm slowly is stirred to and mixes, and namely gets described slippery water fracturing liquid.
Embodiment 11
Present embodiment uses the friction reducer of embodiment 7 preparations to prepare the slippery water fracturing liquid, and it consists of:
The composition of cleanup additive and massfraction are: polyoxyethylene nonylphenol ether 3.5%, the weight of methyl alcohol are 30%, water 66.5%.
This slippery water is of the fracturing fluid preparation method comprise the following steps:
1) glutaraldehyde is added in the clear water, continuously stirring mixes it;
2) slowly add embodiment 7 made friction reducers in clear water, 600rpm slowly stirs 20min continuously mixes it;
3) add successively cleanup additive, Repone K, 600rpm slowly is stirred to and mixes, and namely gets described slippery water fracturing liquid.
Experimental example 1
This experimental example utilizes the interior conduit friction drag testing device that the slippery water fracturing liquid of embodiment 9 preparations is carried out the test of indoor resistance-reducing yield, and test result as shown in Figure 1.Can find out that on scheming along with the lifting of discharge capacity, resistance-reducing yield raises gradually, finally can reach more than 60%, show the resistance-reducing performance that it is good.
Experimental example 2
On-the-spot small-sized testing experiment, in the fracturing process, the displacing liquid stage is annotated the slippery water system 16.8m according to the prescription of embodiment 10 and method preparation altogether
3, operation pressure 73MPa, discharge capacity 5m
3/ min, termination of pumping pressure 44MPa, frictional resistance are 29MPa.Calculate according to the clear water frictional resistance, the clear water frictional resistance is 75MPa under this condition, and resistance-reducing yield is 61.3%, has obtained good resistance reducing effect.
Claims (10)
1. friction reducer, it is characterized in that: the composition of this friction reducer and mass percent are:
Polyoxyethylene 10%～40%
Organic solvent 40%～85%
Nonionogenic tenside 0～10%
Dispersion agent 0～10%.
2. friction reducer according to claim 1, it is characterized in that: the molecular weight of described polyoxyethylene is 500,000～6,000,000.
3. friction reducer according to claim 1, it is characterized in that: described organic solvent is white oil.
4. friction reducer according to claim 1 is characterized in that: described nonionogenic tenside is any one or the combination in sorbester p17, the tween 80.
5. friction reducer according to claim 1, it is characterized in that: described dispersion agent is silicon-dioxide.
6. the preparation method of a friction reducer as claimed in claim 1 is characterized in that: comprise the following steps:
1) nonionogenic tenside is added in the organic solvent, 50～100rpm slowly is stirred to and mixes;
2) add dispersion agent, 50～100rpm slowly stirs 5min, rear 1500～2000rpm high-speed stirring 5min;
3) reduce stirring velocity, slowly add polyoxyethylene, 1000～1500rpm rapid stirring 10min dissolves it fully, namely gets described friction reducer.
7. slippery water fracturing liquid that uses friction reducer as claimed in claim 1, it is characterized in that: this fracturing liquid forms and mass percent is:
8. slippery water fracturing liquid according to claim 7, it is characterized in that: the composition of described cleanup additive and mass percent are: polyoxyethylene nonylphenol ether 3.0%～5.0%, methyl alcohol 20%～30%, surplus are water.
9. slippery water fracturing liquid according to claim 7, it is characterized in that: described expansion-resisting agent is Repone K; Described sterilant is formaldehyde or glutaraldehyde.
10. the of the fracturing fluid preparation method of slippery water as claimed in claim 7 is characterized in that: comprise the following steps:
1) sterilant is added in the clear water, continuously stirring mixes it;
2) slowly add friction reducer in clear water, 500～800rpm slowly stirs 20min continuously mixes it;
3) add successively cleanup additive, expansion-resisting agent, 500～800rpm slowly is stirred to and mixes, and namely gets described slippery water fracturing liquid.
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Cited By (12)
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| CN103254887A (en) * | 2013-06-09 | 2013-08-21 | 郑建立 | Anti-drag aqueous fracturing fluid preparation |
| CN103525393A (en) * | 2013-10-28 | 2014-01-22 | 中国石油大学(华东) | Instant-type acid solution thickening agent, preparation method therefor and applications thereof |
| CN103540309A (en) * | 2013-10-28 | 2014-01-29 | 中国石油大学(华东) | Reusable hydraulic fracture resistance reducing agent as well as preparation method and application thereof |
| CN103865513A (en) * | 2014-03-12 | 2014-06-18 | 中国石油大学(华东) | Surfactant self-absorption composite shale hydraulic fracturing fluid as well as preparation method and application thereof |
| CN104212435A (en) * | 2013-06-05 | 2014-12-17 | 中国石油天然气股份有限公司 | Fracturing composite thickener |
| CN104371696A (en) * | 2014-10-10 | 2015-02-25 | 四川省威尔敦化工有限公司 | Cleanup agent applicable to slick water system and application method thereof |
| CN104564007A (en) * | 2014-12-30 | 2015-04-29 | 中国石油天然气股份有限公司 | Process for fracturing non-fractured compact sand shale rock reservoirs to obtain fracture networks of vertical wells |
| 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 |
| 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 |
| CN108865105A (en) * | 2018-08-06 | 2018-11-23 | 西南石油大学 | A kind of smooth aqueous systems of low adsorption injury |
| CN109609112A (en) * | 2019-01-18 | 2019-04-12 | 大庆中联信实石油科技开发有限公司 | A kind of slippery water fracturing fluid and preparation method thereof |
| CN109852366A (en) * | 2019-01-18 | 2019-06-07 | 大庆中联信实石油科技开发有限公司 | A kind of multifunctional green cleaning slippery water fracturing fluid and preparation method thereof |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104212435A (en) * | 2013-06-05 | 2014-12-17 | 中国石油天然气股份有限公司 | Fracturing composite thickener |
| CN103254887A (en) * | 2013-06-09 | 2013-08-21 | 郑建立 | Anti-drag aqueous fracturing fluid preparation |
| CN103254887B (en) * | 2013-06-09 | 2015-07-01 | 郑建立 | Anti-drag aqueous fracturing fluid preparation |
| CN103540309B (en) * | 2013-10-28 | 2015-10-21 | 中国石油大学(华东) | A kind of reusable waterfrac treatment friction reducer and preparation method thereof and application |
| CN103540309A (en) * | 2013-10-28 | 2014-01-29 | 中国石油大学(华东) | Reusable hydraulic fracture resistance reducing agent as well as preparation method and application thereof |
| CN103525393B (en) * | 2013-10-28 | 2016-01-13 | 中国石油大学(华东) | A kind of Instant gelling agent for acid fluid and preparation method thereof and application |
| CN103525393A (en) * | 2013-10-28 | 2014-01-22 | 中国石油大学(华东) | Instant-type acid solution thickening agent, preparation method therefor and applications thereof |
| CN103865513B (en) * | 2014-03-12 | 2016-08-10 | 中国石油大学(华东) | A kind of surfactant self-priming is combined shale hydrofrac fluid and preparation method and application |
| CN103865513A (en) * | 2014-03-12 | 2014-06-18 | 中国石油大学(华东) | Surfactant self-absorption composite shale hydraulic fracturing fluid as well as preparation method and application thereof |
| CN104371696A (en) * | 2014-10-10 | 2015-02-25 | 四川省威尔敦化工有限公司 | Cleanup agent applicable to slick water system and application method thereof |
| CN104564007A (en) * | 2014-12-30 | 2015-04-29 | 中国石油天然气股份有限公司 | Process for fracturing non-fractured compact sand shale rock reservoirs to obtain fracture networks of vertical wells |
| CN104564007B (en) * | 2014-12-30 | 2017-06-23 | 中国石油天然气股份有限公司 | Non- Fractured densification sand mud reservoir straight well seam net fracturing technology |
| 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 |
| 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 |
| CN108865105A (en) * | 2018-08-06 | 2018-11-23 | 西南石油大学 | A kind of smooth aqueous systems of low adsorption injury |
| CN108865105B (en) * | 2018-08-06 | 2019-06-14 | 西南石油大学 | A kind of smooth aqueous systems of low adsorption injury |
| CN109609112A (en) * | 2019-01-18 | 2019-04-12 | 大庆中联信实石油科技开发有限公司 | A kind of slippery water fracturing fluid and preparation method thereof |
| CN109852366A (en) * | 2019-01-18 | 2019-06-07 | 大庆中联信实石油科技开发有限公司 | A kind of multifunctional green cleaning slippery water fracturing fluid and preparation method thereof |
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