CN1329474C - Alcohol-base fracturing fluid - Google Patents
Alcohol-base fracturing fluid Download PDFInfo
- Publication number
- CN1329474C CN1329474C CNB2005100428335A CN200510042833A CN1329474C CN 1329474 C CN1329474 C CN 1329474C CN B2005100428335 A CNB2005100428335 A CN B2005100428335A CN 200510042833 A CN200510042833 A CN 200510042833A CN 1329474 C CN1329474 C CN 1329474C
- Authority
- CN
- China
- Prior art keywords
- alcohol
- water
- fracturing fluid
- stratum
- fracturing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Lubricants (AREA)
Abstract
The present invention relates to a fracturing fluid used in fracturing yield increase technique in oil wells or natural gas wells, more specifically to an alcohol-base fracturing fluid. At present, water is used as the water-base fracturing fluid of dispersion media in more than 90% of the fracturing fluids used in the fracturing reformation in oil and gas fields; as for oil and gas zones having the characteristics of low stratum pressure, low permeability and strong water blocking performance, since the pressure coefficient of the stratum is largely smaller than the pressure coefficient of water in well bores, liquid can not be easily discharged back; since the water blocking action of the stratum, pores in the stratum are easily blocked, and therefore, the fracturing reformation loses effectiveness. The alcohol-base fracturing fluid of the present invention is made from low carbon alcohol, a low carbon alcohol thickening agent, water, a crosslinking agent, a glue cracking agent, a pH regulator and a surfactant. Since methanol and water can form mixtures in any proportion, the methanol fracturing fluid can absorb water bound by the stratum and discharge water out of the ground in company with the fracturing fluid after entering the water blocking stratum so as to relieve the water blocking of the stratum, which is favorable for back discharge of the liquid.
Description
One, technical field:
The present invention relates to a kind of employed fracturing liquid of fracturing yield increasing technology that is used for oil well or gasser, is alcohol-base fracturing fluid specifically.
Two, background technology:
In the prior art, at present, to have more than 90% be to be the aqueous fracturing fluid of dispersion medium with water to employed fracturing liquid in the oil-gas field fracturing transformation, low for reservoir pressure, rate of permeation is low, have the hydrocarbon zone of strong water block performance, aqueous fracturing fluid but exists fatal defective: because reservoir pressure coefficient is significantly less than the pressure factor of water in pit shaft, causes liquid to return row's difficulty easily, increase the injury to the stratum; Because the water block effect on stratum easily causes the obstruction of formation pore, fracturing reform was lost efficacy.
Three, summary of the invention:
The object of the present invention is to provide a kind of fracturing reform to have the alcohol-base fracturing fluid of provide protection to low pressure, hypotonic, strong water lock hydrocarbon zone.
For achieving the above object, the technical solution used in the present invention is:
A kind of alcohol-base fracturing fluid, its special character is: fracturing liquid of the present invention is the mixture with following composition and weight part:
Solution A: 50～90 parts of low-carbon alcohol
0.1～1.0 part of low-carbon alcohol viscosifying agent
0.1～50 part in water
Solution B: 0.01～10 part of linking agent
0.001～1.0 part of gel breaker
0.1～1.0 part of pH regulator agent
0.1～1.0 part in tensio-active agent
90～99 parts in water
Is 100: 0.1～10 mixed with solution A, solution B with volumetric ratio, makes alcohol-base fracturing fluid.
Add gaseous media in the above-mentioned alcohol-base fracturing fluid: liquid carbon dioxide or liquid nitrogen are 100: 0.1～10: 50～200 mixed with solution A, solution B, gaseous media with volumetric ratio, make the alcohol radical foamed fracturing fluid.
Above-mentioned low-carbon alcohol viscosifying agent is for playing cationic polyacrylamide, the non-ionic polyacrylamide of thickening power in low-carbon alcohol.
Above-mentioned pore forming material is made up of amphoterics and nonionogenic tenside.
Above-mentioned linking agent is the organic or inorganic compound of zirconium, titanium, acetic acid, citric acid, hydrochloric acid, sulfuric acid and other organic or inorganic acid.
Above-mentioned gel breaker is persulphate or hydrogen peroxide such as ammonium persulphate, Potassium Persulphate.
Above-mentioned low-carbon alcohol is that carbochain is the alcohol of C1-C10.
Above-mentioned low-carbon alcohol is methyl alcohol, ethanol.
The present invention compares with respect to prior art, and it has done improvement fundamentally from filling a prescription, thereby has following advantage:
1,, after the methyl alcohol fracturing liquid enters water lock stratum, can to greatest extent the water that the stratum fettered be absorbed and, remove the water lock on stratum along with fracturing liquid is discharged ground because methyl alcohol can form the mixture of any ratio with water;
2, local water is absorbed to greatest extent by methyl alcohol and takes ground out of, can improve the effective permeability on stratum; On the other hand, because the contraction of clay has increased the size that porosity and hole are shouted;
3, the of the fracturing fluid density of methyl alcohol is 0.8 to 0.82 only, and the fluid column pressure that fracturing liquid forms in pit shaft after the pressure break will be lower than the pressure factor of present nearly all hydrocarbon zone, helps the row of returning of liquid;
4, because the boiling point of methyl alcohol has only 65 ℃, in the hydrocarbon zone more than 65 ℃, after pressure break, liquid returns to be arranged when entering pit shaft, has a rapid expansible process of volume, has accelerated the shaft bottom liquid row of returning earthward for formation temperature.
Four, embodiment:
Alcohol-base fracturing fluid of the present invention has the mixture of following composition and weight part:
Solution A: 50～90 parts of low-carbon alcohol
0.1～1.0 part of low-carbon alcohol viscosifying agent
0.1～50 part in water
Solution B: 0.01～10 part of linking agent
0.001～1.0 part of gel breaker
0.1～1.0 part of pH regulator agent
0.1～1.0 part in tensio-active agent
90～99 parts in water
Is 100: 0.1～10 mixed with solution A, solution B with volumetric ratio, makes alcohol-base fracturing fluid.
Add gaseous media in the above-mentioned alcohol-base fracturing fluid: liquid carbon dioxide or liquid nitrogen are 100: 0.1～10: 50～200 mixed with solution A, solution B, gaseous media with volumetric ratio, make the alcohol radical foamed fracturing fluid.
Above-mentioned low-carbon alcohol viscosifying agent is for playing cationic polyacrylamide, the non-ionic polyacrylamide of thickening power in low-carbon alcohol.
Above-mentioned pore forming material is made up of amphoterics and nonionogenic tenside.
Above-mentioned linking agent is the organic or inorganic compound of zirconium, titanium, acetic acid, citric acid, hydrochloric acid, sulfuric acid and other organic or inorganic acid.
Above-mentioned gel breaker is persulphate or hydrogen peroxide such as ammonium persulphate, Potassium Persulphate.
Above-mentioned low-carbon alcohol is that carbochain is the alcohol of C1-C10.
Above-mentioned low-carbon alcohol is methyl alcohol, ethanol.
The present invention be mutually because methyl alcohol can form the mixture of any ratio with water, after the methyl alcohol fracturing liquid enters water lock stratum, can to greatest extent the water that the stratum fettered be absorbed and along with fracturing liquid is discharged ground, removes the water lock on stratum;
Specific embodiment 1:
10m at the scene
3Add 7800Kg methyl alcohol in the container of belt stirrer, under condition of stirring, slowly add the 30Kg cationic polyacrylamide, add the 1Kg zirconium oxychloride then, continue to stir 10 minutes,, form solution A so that liquid mixing is abundant
1
At 2m
3Add clear water 900Kg in the container, under with pump circulation or agitator condition of stirring, successively slowly add 50Kg technical hydrochloric acid, 50Kg hydrogen peroxide, stir, it is stand-by to be mixed with solution B.
During pressing crack construction, in the infusion solution A
1The time, solution B is pressed and solution A
1With solution A
1: solution B=100 liter: 2.0 liters volume ratio is mixed and is formed the methyl alcohol gelled fracturing fluid.
Specific embodiment 2:
10m at the scene
3Add 7800Kg methyl alcohol in the container of belt stirrer, under condition of stirring, slowly add the 30Kg cationic polyacrylamide, add 1Kg zirconium oxychloride, 100Kg tensio-active agent then respectively, continue to stir 10 minutes,, form solution A so that liquid mixing is abundant
2
Stand-by by the method obtain solution B in " specific embodiment 1 ".
During pressing crack construction, in the infusion solution A
2The time, with solution B, liquid CO
2Press and solution A
2With solution A
2: solution B: liquid CO
2=100 liters: 2.0 liters: 100 liters volume ratio is mixed and is formed CO
2Methyl alcohol frozen glue foamed fracturing fluid.
Claims (3)
1, a kind of alcohol-base fracturing fluid is characterized in that: fracturing liquid of the present invention is the mixture with following composition and weight part:
Solution A: carbochain is C
1-C
1050～90 parts of alcohol
0.1～1.0 part of cationic polyacrylamide or non-ionic polyacrylamide
0.1～50 part in water
Solution B: 0.01～10 part of zirconium oxychloride
0.001～1.0 part in persulphate or hydrogen peroxide
0.1～1.0 part of pH regulator agent
0.1～1.0 part in the tensio-active agent that amphoterics and nonionogenic tenside are formed
90～99 parts in water
Is 100: 0.1～10 mixed with solution A, solution B with volumetric ratio, makes alcohol-base fracturing fluid.
2, alcohol-base fracturing fluid according to claim 1, it is characterized in that: add gaseous media in the described alcohol-base fracturing fluid: liquid carbon dioxide or liquid nitrogen, is 100: 0.1～10: 50～200 mixed with solution A, solution B, gaseous media with volumetric ratio, makes the alcohol radical foamed fracturing fluid.
3, alcohol-base fracturing fluid according to claim 1 and 2 is characterized in that: described carbochain is C
1-C
10Alcohol be methyl alcohol, ethanol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100428335A CN1329474C (en) | 2005-06-17 | 2005-06-17 | Alcohol-base fracturing fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100428335A CN1329474C (en) | 2005-06-17 | 2005-06-17 | Alcohol-base fracturing fluid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1696241A CN1696241A (en) | 2005-11-16 |
| CN1329474C true CN1329474C (en) | 2007-08-01 |
Family
ID=35349136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100428335A Expired - Fee Related CN1329474C (en) | 2005-06-17 | 2005-06-17 | Alcohol-base fracturing fluid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1329474C (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9353309B2 (en) | 2007-03-23 | 2016-05-31 | Board Of Regents, The University Of Texas System | Method for treating a formation with a solvent |
| CN101476452B (en) * | 2009-01-16 | 2012-05-09 | 庆阳长庆井下油田助剂有限责任公司 | Water-control fracturing yield increasing method for oil gas well |
| CN103805156A (en) * | 2012-11-09 | 2014-05-21 | 中国石油化工股份有限公司 | Modified guanidine gum fracturing fluid as well as preparation method and application thereof |
| CN103436245B (en) * | 2013-08-22 | 2016-08-17 | 中国石油集团川庆钻探工程有限公司 | synthetic polymer fracturing fluid for fracturing |
| 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 |
| CN104806221A (en) * | 2015-05-06 | 2015-07-29 | 北京大学 | Unconventional fracturing transformation method for liquefied petroleum gas of oil and gas reservoir |
| CN109536152A (en) * | 2018-10-18 | 2019-03-29 | 中国石油天然气股份有限公司 | gel fracturing fluid system |
| CN109988550A (en) * | 2019-05-10 | 2019-07-09 | 四川洁能锐思石油技术有限公司 | A kind of instant crosslinked fracturing fluid system of methanol-based and its preparation method and application |
| CN112391154B (en) * | 2020-11-24 | 2022-11-08 | 中国石油大学(华东) | Alcohol-containing fracturing fluid and preparation method and application thereof |
| CN113150766A (en) * | 2021-04-29 | 2021-07-23 | 陕西科技大学 | Waterproof lock easily-soluble alcohol-based fracturing fluid and preparation method thereof |
| CN113389533B (en) * | 2021-07-05 | 2022-03-29 | 西南石油大学 | CO (carbon monoxide)2Integrated method for collecting, reservoir reforming and extracting crude oil |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85105346A (en) * | 1985-07-05 | 1985-12-20 | 华东石油学院 | Titanium frost glue water-base crushing liquid |
| CN85105344A (en) * | 1985-07-05 | 1986-07-02 | 华东石油学院 | Water-base zirconium-gel cleavage liquor |
-
2005
- 2005-06-17 CN CNB2005100428335A patent/CN1329474C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85105346A (en) * | 1985-07-05 | 1985-12-20 | 华东石油学院 | Titanium frost glue water-base crushing liquid |
| CN85105344A (en) * | 1985-07-05 | 1986-07-02 | 华东石油学院 | Water-base zirconium-gel cleavage liquor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1696241A (en) | 2005-11-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1329474C (en) | Alcohol-base fracturing fluid | |
| CN101323780B (en) | Low pervasion oilfield thermochemical cleanup additive and use thereof | |
| CN105238380B (en) | A kind of oil gas field novel inorganic subparticle strengthening foam system and preparation method thereof | |
| CN103396776B (en) | A kind of oil and water well self-generating foam unblocking agent and de-plugging process | |
| CA2743637C (en) | Recyclable low solid content micro-bubble drilling fluid or completion fluid | |
| CA2541870C (en) | Methods of fracturing a subterranean formation using a ph dependent foamed fracturing fluid | |
| CA2528696C (en) | Method and composition for treating a subterranean formation with splittable foams | |
| OA13334A (en) | Carbon dioxide foamed fluids. | |
| US20020039972A1 (en) | Fracturing method using aqueous or acid based fluids | |
| CN106867486A (en) | A kind of frothy gel well workover method for increasing made with water blockoff connection and its application | |
| US20020065359A1 (en) | Fracturing fluid | |
| CN105916959A (en) | Fracturing process using liquid ammonia | |
| CN103265938A (en) | Foam-like fracturing system, preparation method and filling method thereof | |
| CA2724402A1 (en) | Mutual solvent-soluble and/or alcohol blends-soluble particles for viscoelastic surfactant fluids | |
| CN105683330A (en) | Carbonate-based slurry fracturing with solid acid for unconventional reservoir | |
| CN104946232A (en) | Mixed alcohol-acid liquid system for compact sandstone reservoir | |
| CN108049855A (en) | A kind of MH acid construction technology suitable for sandstone reservoir transformation | |
| CN111394086A (en) | Preparation method of environment-friendly water-saving fracturing fluid | |
| CN114085662A (en) | Preparation method and application of chemical self-heating energizing fracturing fluid suitable for low-pressure low-permeability oil and gas reservoir | |
| CN108456511A (en) | A kind of layer is interior to generate CO2System and its application | |
| CN103468237A (en) | Clean fracturing fluid and preparation method thereof | |
| US3335794A (en) | Secondary recovery method with surfactant in fracturing fluid | |
| RU2279462C1 (en) | Oil-and-gas well kill fluid | |
| CN116814234A (en) | Discharge assisting agent for fracturing and preparation method and application thereof | |
| CN108913115B (en) | Low-damage composite fracturing fluid and application method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHANGQING OIL EXPLORATION BUREAU Free format text: FORMER OWNER: QINGYANG CHANGQING DOWNHOLE CHEMICAL PLANT, GANSU Effective date: 20071109 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20071109 Address after: 710021 Shaanxi province Xi'an Weiyang Changqing prosperous park area of Changqing Petroleum Exploration Bureau of science and Technology Development Department Patentee after: Changqing Petroleum Prospection Bureau Address before: 745113 Gansu Province, Qingcheng County Ma Zhen He's underground chemical plant Patentee before: Qingyang Changqing Downhole Chemical Plant, Gansu |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20051116 Assignee: Xi'an Changqing Chemical Industry Group Co., Ltd. Assignor: Changqing Petroleum Prospection Bureau Contract record no.: 2010610000008 Denomination of invention: Alcohol-base fracturing fluid Granted publication date: 20070801 License type: Exclusive License Record date: 20100409 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070801 Termination date: 20200617 |