CN103409121A - Water-soluble temporary plugging diversion agent for fracturing and preparation method thereof - Google Patents
Water-soluble temporary plugging diversion agent for fracturing and preparation method thereof Download PDFInfo
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- CN103409121A CN103409121A CN2013103111590A CN201310311159A CN103409121A CN 103409121 A CN103409121 A CN 103409121A CN 2013103111590 A CN2013103111590 A CN 2013103111590A CN 201310311159 A CN201310311159 A CN 201310311159A CN 103409121 A CN103409121 A CN 103409121A
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Abstract
The invention relates to a water-soluble temporary plugging diversion agent for fracturing and a preparation method thereof. The temporary plugging diversion agent comprises plant starch, a polymer, an expanding agent and a curing agent, wherein the mass ratio of the plant starch, the polymer, the expanding agent and the curing agent is 4.5:3.5:0.5:1.5. The preparation method comprises steps of mixing the polymer and the plant starch uniformly; adding a mixture of the expanding agent and the curing agent; stirring until the mixture is uniformly mixed to obtain a raw material mixture; preparing the raw material mixture into pie shapes, drying naturally, and granulating into particles having a diameter of 3-6 mm to obtain the temporary plugging diversion agent. The temporary plugging diversion agent has advantages of good solubility, strong adhesivity, good flowback performance, no pollution to the ground stratums, and the like. The temporary plugging diversion agent has high breakthrough pressure and can plug shot holes and highly pervious beds temporally and can pressure to open new cracks.
Description
Technical field
The present invention relates to a kind of water-soluble pressure break and turn to temporary plugging agent and preparation method thereof, belong to the petrochemical technology field.
Background technology
Along with the Development and Production of fractured well, recovery percent of reserves is very high for the crude oil in the draining district that the crack of pressure break generation is for the first time controlled, but a large amount of surplus oil development degrees outside the draining district are lower.For water-control oil-increasing, give full play to the production potential of oil well, take merely to extend the conventional pressure break of primary fracture, can not meet the development need of oilfield stimulation stable yields.
Temporarily stall is in fracturing process, to add in real time temporary plugging agent to the pressure break new technology, stifled old seam or added the sand seam temporarily, and the variation by parting pressure, fracture propagation pressure turns to fluid, thereby produces new seam.For the research of temporary plugging agent in fracturing process, carried out certain research work both at home and abroad, still there are prices of raw and semifnished materials costliness, construction complexity, easily block by water lock oil reservoir, to problems such as formation damage are large.
Summary of the invention
For solving the problems of the technologies described above, the object of the present invention is to provide a kind of water-soluble pressure break to turn to temporary plugging agent, this temporary plugging agent have dissolve fast, breakthrough pressure by force, do not pollute the characteristics such as stratum.
The present invention also aims to provide above-mentioned water-soluble pressure break to turn to the preparation method of temporary plugging agent.
For achieving the above object, the invention provides a kind of water-soluble pressure break and turn to temporary plugging agent, it is comprised of plant amylum, superpolymer, swelling agent and solidifying agent, and the mass ratio of described plant amylum, superpolymer, swelling agent and solidifying agent is 4.5:3.5:0.5:1.5.
In above-mentioned water-soluble pressure break turned to temporary plugging agent, preferably, the superpolymer adopted was that molecular weight is 3,000,000-8,000,000 modified polyacrylamide polymkeric substance; More preferably, described modified polyacrylamide polymkeric substance is acrylamide and 2-acrylamide-2-methylpro panesulfonic acid multipolymer.
In above-mentioned water-soluble pressure break turned to temporary plugging agent, preferably, the swelling agent adopted was Natvosol.
In above-mentioned water-soluble pressure break turned to temporary plugging agent, preferably, the plant amylum adopted was hydroxypropylated starch.
In above-mentioned water-soluble pressure break turned to temporary plugging agent, preferably, the solidifying agent adopted was sulfonated gilsonite.
These material prices of plant amylum of the present invention, superpolymer, swelling agent and solidifying agent are cheap, are conducive to reduce the cost of temporary plugging agent.This temporary plugging agent can prepare by simple technological process.
The present invention also provides above-mentioned water-soluble pressure break to turn to the preparation method of temporary plugging agent, and it comprises the following steps:
Superpolymer and plant amylum are mixed, add the mixture of swelling agent and solidifying agent, be stirred to and mix, obtain raw mix;
Raw mix is made to pie, naturally dry, then causing diameter is the particle of 3-6mm, obtains water-soluble pressure break and turns to temporary plugging agent.
In above-mentioned preparation method, preferably, raw mix is made to the step of pie and is carried out in such a way:
It is that 1m, width are 0.5m, highly are to be coated with last layer lubricating oil by the rectangular vessel of 1cm that raw mix is placed in to length, spreads out into the pie that thickness is about 5mm-10mm.
According to the specific embodiment of the invention scheme, preferably, above-mentioned preparation method can carry out according to following steps:
In stirrer, add superpolymer and plant amylum, after stirring, the swelling agent mixed and curing agent mixture are added wherein, strong stirring is to mixing; Be poured on rectangular vessel (length be 1m, width be 0.5m, highly for 1cm) upper, be coated with last layer lubricating oil, spread out into the pie of 5mm-10mm left and right thickness, after the oven dry, on tablets press, causing diameter is the particle of 3-6mm size, i.e. the finished product temporary plugging agent naturally.
Adopt water-soluble pressure break provided by the invention to turn to temporary plugging agent, during construction, add appropriate solid granule temporary plugging agent to stratum, the temporary plugging agent particle enters the borehole of pit shaft, part enters Zhong De crack, stratum or most permeable zone, at borehole and high permeability zone generation filter cake, carry out bridge blinding, formation is higher than the pressure reduction of gash fracture pressure, follow-up work liquid can not be entered to crack and high permeability zone, thereby make fracturing liquid enter area of high stress or new fracture layers, impel the generation of new seam and the laid variation of propping agent, link up and do not employed the draining district, reach the purpose of volume increase.
Water-soluble pressure break of the present invention turns to that temporary plugging agent has that solvability is good, adhesivity is strong, the row of returning performance is good, do not pollute the advantage such as stratum, have high breakthrough pressure can be well temporarily shutoff borehole and most permeable zone, press off new crack.
Embodiment
For technical characterictic of the present invention, purpose and beneficial effect being had more clearly, understand, now technical scheme of the present invention is carried out to following detailed description, but but can not be interpreted as the restriction to practical range of the present invention.
Embodiment
The present embodiment provides a kind of water-soluble pressure break to turn to temporary plugging agent, and it prepares by following steps:
112.5kg hydroxypropylated starch and 87.5kg modified polyacrylamide (molecular weight 5,000,000) are put into to stirrer to be stirred; after simultaneously 12.5kg Natvosol and 37.5kg sulfonated gilsonite being mixed, add in stirrer; strong stirring is to after mixing; be poured on rectangular vessel (length be 1m, width be 0.5m, highly for 1cm) on; upper and lower surface respectively is coated with the pie that then last layer lubricating oil spread out into the 5mm left and right thickness; naturally after drying; on tablets press, causing diameter is the temporary plugging agent particle of 3-6mm size, obtains water-soluble pressure break and turns to temporary plugging agent.
Water-soluble pressure break prepared by embodiment turns to temporary plugging agent to carry out solubility experiment, withstand voltage properties experiment, to test its row of returning performance, to block up performance temporarily, and to the contaminative on stratum.
1, solubility property experiment:
Small sample (laboratory sample in beaker) (heavy 5g) is placed in to the beaker that fills 250ml water, middle sample (laboratory sample in stirrer) (heavy 5g) is placed in to the beaker that fills 250ml water, test sample and the dissolution time of middle sample under differing temps, test result is as shown in table 1.
The solubility property experimental result of table 1 temporary plugging agent
| ? | 30℃ | 45℃ | 60℃ | 80℃ | 100℃ |
| Small sample | 10h | 9h | 6h | 3h | 1h |
| Middle sample | 10h | 9h | 6h | 3h | 1h |
2, intensity experiment: test water dissolubility pressure break turns to the withstand voltage properties of temporary plugging agent
(1) experiment of hardness: utilize the water-soluble pressure break of pressure testing machine (the pressing machine type is on not impact of experimental result) test implementation example to turn to temporary plugging agent withstand voltage properties at ambient temperature, test result is as shown in table 2.
The experiment of hardness result of table 2 temporary plugging agent
| The sample name | Withstand voltage properties (MPa) |
| Small sample | 20 |
| Middle sample | 19 |
(2) breakthrough pressure experiment
Turn to temporary plugging agent to add simulation between two synthetic cores (porosity 12.44%) to stop up the ground layer state the water-soluble pressure break of embodiment 1, by the rock core acidifying, flow and estimate instrument (SL32-180 type), the obstruction strength property of test temporary plugging agent, test result is as shown in table 3.
The breakthrough pressure experimental result of table 3 temporary plugging agent
| The sample name | Breakthrough pressure (MPa) |
| Small sample | 8.1 |
| Middle sample | 8 |
By above-mentioned description of test, the water-soluble pressure break of embodiment turns to the solubility property of temporary plugging agent good, adhesion property strong and have higher pressure intensity, and has high breakthrough pressure.
Claims (8)
1. a water-soluble pressure break turns to temporary plugging agent, and it is comprised of plant amylum, superpolymer, swelling agent and solidifying agent, and the mass ratio of described plant amylum, superpolymer, swelling agent and solidifying agent is 4.5:3.5:0.5:1.5.
2. water-soluble pressure break according to claim 1 turns to temporary plugging agent, and wherein, described superpolymer is that molecular weight is 3,000,000-8,000,000 modified polyacrylamide polymkeric substance.
3. water-soluble pressure break according to claim 2 turns to temporary plugging agent, and wherein, described modified polyacrylamide polymkeric substance is acrylamide and 2-acrylamide-2-methylpro panesulfonic acid multipolymer.
4. water-soluble pressure break according to claim 1 turns to temporary plugging agent, and wherein, described swelling agent is Natvosol.
5. water-soluble pressure break according to claim 1 turns to temporary plugging agent, and wherein, described plant amylum is hydroxypropylated starch.
6. water-soluble pressure break according to claim 1 turns to temporary plugging agent, and wherein, described solidifying agent is sulfonated gilsonite.
7. the described water-soluble pressure break of claim 1-6 any one turns to the preparation method of temporary plugging agent, and it comprises the following steps:
Superpolymer and plant amylum are mixed, add the mixture of swelling agent and solidifying agent, be stirred to and mix, obtain raw mix;
Raw mix is made to pie, naturally dry, then causing diameter is the particle of 3-6mm, obtains described water-soluble pressure break and turns to temporary plugging agent.
8. preparation method according to claim 7, wherein, make raw mix the step of pie and carry out in such a way:
It is that 1m, width are 0.5m, highly are to be coated with last layer lubricating oil by the rectangular vessel of 1cm that raw mix is placed in to length, spreads out into the pie that thickness is 5mm-10mm.
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104498007A (en) * | 2014-12-26 | 2015-04-08 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Low-damage temporary blocking gel for repairing low pressure gas well and preparation method of low-damage temporary blocking gel |
| CN105778877A (en) * | 2016-04-06 | 2016-07-20 | 中国石油大学(华东) | Inter-slit temporary plugging agent and preparation method thereof |
| CN106030030A (en) * | 2014-02-19 | 2016-10-12 | 国际壳牌研究有限公司 | Method for providing multiple fractures in a formation |
| CN106350043A (en) * | 2016-07-22 | 2017-01-25 | 北京斯迪莱铂油气技术有限公司 | Compound temporary plugging agent and compound temporary plugging method used in temporary blocking turnaround fracture |
| CN106867487A (en) * | 2015-12-10 | 2017-06-20 | 中国石油天然气股份有限公司 | A kind of temporarily stifled diversion agent for reservoir reconstruction and preparation method thereof |
| CN107766637A (en) * | 2017-10-12 | 2018-03-06 | 大庆中联信实石油科技开发有限公司 | Fine separate zone stimulation method |
| CN108343417A (en) * | 2018-01-31 | 2018-07-31 | 中国石油天然气股份有限公司 | A kind of gas well temporarily blocks up the methods and applications of separate zone stimulation |
| CN108531152A (en) * | 2017-03-01 | 2018-09-14 | 中国石油天然气股份有限公司 | A kind of low-density, high-strength degradable diverting agent and preparation method thereof |
| CN109142151A (en) * | 2018-09-12 | 2019-01-04 | 中国石油天然气股份有限公司 | A kind of adhesive capacity method of evaluating performance of oil field fracturing diverting agent |
| CN109575893A (en) * | 2017-09-28 | 2019-04-05 | 中国石油化工股份有限公司 | Carbonate Acid Fracturing is turned to temporarily stifled fluid |
| CN109575892A (en) * | 2019-01-18 | 2019-04-05 | 大庆中联信实石油科技开发有限公司 | Powder diverting agent and preparation method thereof in a kind of seam |
| CN109652041A (en) * | 2019-01-18 | 2019-04-19 | 大庆中联信实石油科技开发有限公司 | Powder diverting agent and preparation method thereof in a kind of seam |
| CN109944578A (en) * | 2019-02-27 | 2019-06-28 | 中国石油天然气股份有限公司 | A kind of prefabricated pressure break replaces the preparation method and its construction technology of isolator |
| CN110003870A (en) * | 2019-05-13 | 2019-07-12 | 中科宝辰(北京)科技有限公司 | A kind of pressure break degradable water dissolubility diverting agent and preparation method thereof |
| CN110079288A (en) * | 2019-06-04 | 2019-08-02 | 中国石油化工股份有限公司 | A kind of dilatancy diverting agent and preparation method thereof |
| CN112080261A (en) * | 2019-06-14 | 2020-12-15 | 中国石油化工股份有限公司 | Temporary plugging liquid and application thereof |
| CN113956859A (en) * | 2021-10-25 | 2022-01-21 | 山东恒立重装新技术有限公司 | Temporary plugging ball and manufacturing method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4210206A (en) * | 1977-10-07 | 1980-07-01 | Halliburton Company | High temperature well treating with crosslinked gelled solutions |
| CN1053631A (en) * | 1991-02-11 | 1991-08-07 | 大庆石油管理局井下作业公司 | Temperarily blocking agent for water soluble stratum |
| CN101724383A (en) * | 2008-10-15 | 2010-06-09 | 中国石油天然气股份有限公司 | Drilling fluid plugging agent while drilling |
| CN102020984A (en) * | 2009-09-15 | 2011-04-20 | 中国石油天然气股份有限公司 | In-fissure diversion fracturing temporary blocking agent for low-permeability oilfield, and preparation method and application thereof |
| CN102093864A (en) * | 2010-12-21 | 2011-06-15 | 中国石油天然气股份有限公司 | Temporary plugging diversion agent for refracturing of oil-water well and preparation method thereof |
| CN102559160A (en) * | 2011-12-26 | 2012-07-11 | 胜利油田方圆化工有限公司 | Unidirectional temporary plugging agent for natural gas wells and application method thereof |
| CN102653673A (en) * | 2012-01-05 | 2012-09-05 | 中国石油天然气股份有限公司 | Biodegradable temporary plugging additive |
| CN102746837A (en) * | 2012-01-13 | 2012-10-24 | 宫立武 | Microsphere temporary plugging agent for leakage oil well |
-
2013
- 2013-07-23 CN CN201310311159.0A patent/CN103409121B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4210206A (en) * | 1977-10-07 | 1980-07-01 | Halliburton Company | High temperature well treating with crosslinked gelled solutions |
| CN1053631A (en) * | 1991-02-11 | 1991-08-07 | 大庆石油管理局井下作业公司 | Temperarily blocking agent for water soluble stratum |
| CN101724383A (en) * | 2008-10-15 | 2010-06-09 | 中国石油天然气股份有限公司 | Drilling fluid plugging agent while drilling |
| CN102020984A (en) * | 2009-09-15 | 2011-04-20 | 中国石油天然气股份有限公司 | In-fissure diversion fracturing temporary blocking agent for low-permeability oilfield, and preparation method and application thereof |
| CN102093864A (en) * | 2010-12-21 | 2011-06-15 | 中国石油天然气股份有限公司 | Temporary plugging diversion agent for refracturing of oil-water well and preparation method thereof |
| CN102559160A (en) * | 2011-12-26 | 2012-07-11 | 胜利油田方圆化工有限公司 | Unidirectional temporary plugging agent for natural gas wells and application method thereof |
| CN102653673A (en) * | 2012-01-05 | 2012-09-05 | 中国石油天然气股份有限公司 | Biodegradable temporary plugging additive |
| CN102746837A (en) * | 2012-01-13 | 2012-10-24 | 宫立武 | Microsphere temporary plugging agent for leakage oil well |
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| CN106030030A (en) * | 2014-02-19 | 2016-10-12 | 国际壳牌研究有限公司 | Method for providing multiple fractures in a formation |
| CN104498007B (en) * | 2014-12-26 | 2017-11-03 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of temporary blocking gel of Low Damage and preparation method for low-pressure gas well well workover |
| CN104498007A (en) * | 2014-12-26 | 2015-04-08 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Low-damage temporary blocking gel for repairing low pressure gas well and preparation method of low-damage temporary blocking gel |
| CN106867487A (en) * | 2015-12-10 | 2017-06-20 | 中国石油天然气股份有限公司 | A kind of temporarily stifled diversion agent for reservoir reconstruction and preparation method thereof |
| CN105778877A (en) * | 2016-04-06 | 2016-07-20 | 中国石油大学(华东) | Inter-slit temporary plugging agent and preparation method thereof |
| CN105778877B (en) * | 2016-04-06 | 2019-01-18 | 中国石油大学(华东) | Diverting agent and preparation method thereof between a kind of seam |
| CN106350043B (en) * | 2016-07-22 | 2019-04-12 | 北京斯迪莱铂油气技术有限公司 | Complex Temporary Blocking agent and Complex Temporary Blocking method for temporarily blocking up in turnaround fracture |
| CN106350043A (en) * | 2016-07-22 | 2017-01-25 | 北京斯迪莱铂油气技术有限公司 | Compound temporary plugging agent and compound temporary plugging method used in temporary blocking turnaround fracture |
| US11053427B2 (en) | 2017-03-01 | 2021-07-06 | Petrochina Company Limited | Low-density, high-strength degradable temporary pugging agent and the preparation method and use thereof |
| CN108531152A (en) * | 2017-03-01 | 2018-09-14 | 中国石油天然气股份有限公司 | A kind of low-density, high-strength degradable diverting agent and preparation method thereof |
| CN109575893B (en) * | 2017-09-28 | 2021-04-23 | 中国石油化工股份有限公司 | Temporary plugging fluid for carbonate rock acid fracturing steering |
| CN109575893A (en) * | 2017-09-28 | 2019-04-05 | 中国石油化工股份有限公司 | Carbonate Acid Fracturing is turned to temporarily stifled fluid |
| CN107766637B (en) * | 2017-10-12 | 2020-11-06 | 大庆中联信实石油科技开发有限公司 | Fine layering reconstruction method |
| CN107766637A (en) * | 2017-10-12 | 2018-03-06 | 大庆中联信实石油科技开发有限公司 | Fine separate zone stimulation method |
| CN108343417A (en) * | 2018-01-31 | 2018-07-31 | 中国石油天然气股份有限公司 | A kind of gas well temporarily blocks up the methods and applications of separate zone stimulation |
| CN109142151A (en) * | 2018-09-12 | 2019-01-04 | 中国石油天然气股份有限公司 | A kind of adhesive capacity method of evaluating performance of oil field fracturing diverting agent |
| CN109575892A (en) * | 2019-01-18 | 2019-04-05 | 大庆中联信实石油科技开发有限公司 | Powder diverting agent and preparation method thereof in a kind of seam |
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| CN109944578A (en) * | 2019-02-27 | 2019-06-28 | 中国石油天然气股份有限公司 | A kind of prefabricated pressure break replaces the preparation method and its construction technology of isolator |
| CN110003870A (en) * | 2019-05-13 | 2019-07-12 | 中科宝辰(北京)科技有限公司 | A kind of pressure break degradable water dissolubility diverting agent and preparation method thereof |
| CN110079288A (en) * | 2019-06-04 | 2019-08-02 | 中国石油化工股份有限公司 | A kind of dilatancy diverting agent and preparation method thereof |
| CN110079288B (en) * | 2019-06-04 | 2021-10-15 | 中国石油化工股份有限公司 | Expansive temporary plugging agent and preparation method thereof |
| CN112080261A (en) * | 2019-06-14 | 2020-12-15 | 中国石油化工股份有限公司 | Temporary plugging liquid and application thereof |
| CN113956859A (en) * | 2021-10-25 | 2022-01-21 | 山东恒立重装新技术有限公司 | Temporary plugging ball and manufacturing method thereof |
| CN113956859B (en) * | 2021-10-25 | 2023-01-17 | 山东恒立重装新技术有限公司 | Temporary plugging ball and manufacturing method thereof |
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