CN105038757A - Gel fracturing fluid prepared from oilfield sewage and preparation method thereof - Google Patents
Gel fracturing fluid prepared from oilfield sewage and preparation method thereof Download PDFInfo
- Publication number
- CN105038757A CN105038757A CN201510303072.8A CN201510303072A CN105038757A CN 105038757 A CN105038757 A CN 105038757A CN 201510303072 A CN201510303072 A CN 201510303072A CN 105038757 A CN105038757 A CN 105038757A
- Authority
- CN
- China
- Prior art keywords
- fracturing fluid
- oilfield sewage
- preparation
- gelled fracturing
- employing
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/62—Compositions for forming crevices or fractures
- C09K8/66—Compositions based on water or polar solvents
- C09K8/68—Compositions based on water or polar solvents containing organic compounds
- C09K8/685—Compositions based on water or polar solvents containing organic compounds containing cross-linking agents
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/84—Compositions based on water or polar solvents
- C09K8/86—Compositions based on water or polar solvents containing organic compounds
- C09K8/88—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/90—Compositions based on water or polar solvents containing organic compounds macromolecular compounds of natural origin, e.g. polysaccharides, cellulose
- C09K8/905—Biopolymers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/12—Swell inhibition, i.e. using additives to drilling or well treatment fluids for inhibiting clay or shale swelling or disintegrating
Abstract
The invention discloses a gel fracturing fluid prepared from oilfield sewage and a preparation method thereof. The gel fracturing fluid comprises the following components in percentage by weight: 0.01-1% of water quality regulator, 0.01-0.5% of bactericide, 0.1-0.8% of thickener, 0.1-0.5% of crosslinking agent, 0.01-0.5% of viscosity breaker and the balance of oilfield sewage. The gel fracturing fluid prepared from oilfield sewage has favorable temperature resistance and shear resistance, and satisfies the demands for on-site construction. The gel fracturing fluid prepared from oilfield sewage relieves the demands of hydraulic fracturing for water resources, and solves the problem of treatment of oilfield sewage. The gel fracturing fluid prepared from oilfield sewage has the advantages of favorable clay swelling resistance and low formation damage rate, thereby reducing the use of the antiswelling agent and saving the cost. The gel fracturing fluid prepared from oilfield sewage has wide formation application range, avoids damage to the formations which are sensitive to alkali, acid and the like, has favorable economic benefit and environmental benefit, and is suitable for popularization and application.
Description
Technical field
The invention belongs to fracturing liquid technical field, be specifically related to a kind of gelled fracturing fluid adopting oilfield sewage to prepare, also relate to a kind of preparation method of the gelled fracturing fluid adopting oilfield sewage to prepare simultaneously.
Background technology
In pressing crack construction process, the volume increase increasing the storage of of the fracturing fluid performance to oil field plays vital effect.Of the fracturing fluid preparation water is generally clear water, and water consumption is comparatively large, because the regional water such as Shanxi, Gansu is deficient, brings more problem to preparing fracturing fluid; On the other hand, along with oilfield exploitation enters the middle and later periods, water content in crude oil up to 80% ~ 90%, oilfield sewage be treated as an increasingly serious problem.China Petrochemical Industry's clear water blue sky Environmental Protection Plan, requires to reach oilfield sewage zero release in 2015, if can adopt oilfield sewage preparing fracturing fluid, can alleviate waterfrac treatment and can solve disposing polluted water in oil problem again to the demand of water resources.
Relative to clear water, oilfield sewage self tool high salinity, the characteristic good with the compatibleness on stratum, use it for the advantage that preparing fracturing fluid has Low Damage, but oilfield sewage condition of water quality is poor, there is the Multiple components such as inorganic salt, organism and bacterium, mutually intersect between various component, there is interaction again.It is on the low side to there is base fluid viscosity in the conventional gelled fracturing fluid of the oilfield sewage preparation of direct utilization after simple flocculation sediment filtration treatment, and the problem that cannot be cross-linked, its temperature and shearing sustainability can not meet on-the-spot pressing crack construction demand.Therefore need a kind of new method, solve the current Problems existing of waste water gelled fracturing fluid, to improve its temperature and shearing sustainability, meet pressing crack construction demand.
Summary of the invention
The object of this invention is to provide a kind of gelled fracturing fluid adopting oilfield sewage to prepare, solve existing employing waste water fracturing liquid viscosity and crosslinked abnormal, temperature and shearing sustainability is poor, cannot meet the problem of site operation demand.
Second object of the present invention is to provide a kind of preparation method of the gelled fracturing fluid adopting oilfield sewage to prepare.
In order to realize above object, the technical solution adopted in the present invention is: a kind of gelled fracturing fluid adopting oilfield sewage to prepare, comprise the component of following weight percent: water conditioner 0.01% ~ 1%, sterilant 0.01% ~ 0.5%, viscosifying agent 0.1% ~ 0.8%, linking agent 0.1% ~ 0.5%, gel breaker 0.01% ~ 0.5%, surplus is oilfield sewage.
Described water conditioner is the mixture of pH adjusting agent and disodium edta; In described water conditioner, the mass ratio of pH adjusting agent and disodium edta is 1 ~ 2:1 ~ 3.
Described pH adjusting agent is hydrochloric acid or FUMARIC ACID TECH GRADE.
Described disodium edta is disodium ethylene diamine tetraacetate.
Described sterilant is any one or combination in glutaraldehyde, isothiazolinone.
Described viscosifying agent is hydroxypropyl guar or carboxy-methyl hydroxy propyl guanidine glue.
Described linking agent to be pH value be 7 ~ 8 organic borate cross-linker.
Described organic borate cross-linker is commercial goods, produces (commodity are called low concentration guanidine gum rubber cross linker, and marque is D-1) by Xuan Tai Industrial Co., Ltd. of Xinxiang City.
Described gel breaker is ammonium persulphate.
Described oilfield sewage is any one or a few the mixture in oilfield produced waste water, fracturing outlet liquid, flushing fluid.
Described gelled fracturing fluid is used for the well fracturing operation of well temperature below 90 DEG C.
A preparation method for the gelled fracturing fluid of above-mentioned employing oilfield sewage preparation, comprises the following steps:
1) get oilfield sewage, add water conditioner, sterilant, viscosifying agent successively, stir, to viscosifying agent complete swelling, obtain base fluid;
2) get linking agent, gel breaker add step 1) in gained base fluid, mix, obtain described gelled fracturing fluid.
The gelled fracturing fluid of employing oilfield sewage preparation of the present invention is applicable to the well fracturing operation of well temperature below 90 DEG C.
The gelled fracturing fluid of employing oilfield sewage preparation of the present invention, on the one hand by adding the auxiliary agent (water conditioner) changing water quality in oilfield sewage, enhance ortho position cis hydroxyl groups in viscosifying agent formed hydrogen bond water and effect, thus improve the base fluid viscosity of oilfield sewage preparation gelled fracturing fluid, solve the problem that viscosity is on the low side; Utilize on the other hand pH value be 7 ~ 8 organic borate cross-linker and the good compatibleness feature of oilfield sewage, improve the temperature and shearing sustainability of waste water gelled fracturing fluid; Aid antibacteria agents etc., form a kind of fracturing liquid adopting oilfield sewage to prepare.
In the gelled fracturing fluid of employing oilfield sewage preparation of the present invention, water conditioner passes through the synergy of complexing agent disodium edta and pH adjusting agent, significantly improve the water quality of preparation melon sol solution, enhance on the one hand ortho position cis hydroxyl groups in viscosifying agent formed hydrogen bond water and effect, sheltered in sewage quality on the other hand and affected the swollen and crosslinked polyvalent metal ion of guanidine peptization.
Owing to there is a certain amount of Si in oilfield sewage
4+, B
3+, Fe
3+etc. the coordination compound that transition element polyvalent cation is formed, under stronger alkaline condition, can rapidly in viscosifying agent ortho position cis hydroxyl groups be combined and form single glycol or two two alcohol complexs, hinder the effectively crosslinked of organic borate cross-linker and guanidine glue, thus cause the gelled fracturing fluid cross-linking effect of waste water not good.The present invention adopt pH value be 7 ~ 8 organic borate cross-linker, the Effective Regulation speed of dissociating of linking agent mesoboric acid root, facilitate the complex reaction of ortho position cis hydroxyl groups in borate and viscosifying agent, avoid formed between transition element polyvalent cation coordination compound and viscosifying agent in sewage false simultaneously and be cross-linked.
The gelled fracturing fluid of employing oilfield sewage preparation of the present invention, forms by water conditioner, sterilant, viscosifying agent, linking agent, gel breaker and oilfield sewage are composite, has good temperature and shearing sustainability, at 90 DEG C, 170s
-1condition down cut 90min, tail is sticky is greater than 100mPas, meets site operation demand; Adopt oilfield sewage preparing fracturing fluid, low to water quality requirement, both alleviated the demand of waterfrac treatment to water resources, and solved again the process problem of oilfield sewage, avoid the excess processes of sewage; Meanwhile, this fracturing liquid takes full advantage of high, good with the stratum compatibleness characteristic of oilfield sewage salinity, and the fracturing liquid of preparation has good anti-clayswelling, anti-dilative reaches 90%, stratum injuring rate little (being less than 25%), thus decrease the use of expansion-resisting agent, save cost; This of the fracturing fluid pH is neutral (7 ~ 7.5), is suitable for formation volumes wide, avoids the injury on the responsive stratum such as quick to alkali, acid-sensitive, has good economic benefit and environmental benefit, be applicable to applying.
The preparation method of the gelled fracturing fluid of employing oilfield sewage preparation of the present invention, first water conditioner, sterilant, viscosifying agent are added in oilfield sewage, after viscosifying agent complete swelling, add linking agent and gel breaker again, gained gelled fracturing fluid has good temperature and shearing sustainability; This preparation method's technique is simple, and easy to operate, cost is low, is convenient to site operation preparation, has broad application prospects.
Accompanying drawing explanation
Fig. 1 is the flow curve of embodiment 1 gained gelled fracturing fluid;
Fig. 2 is the flow curve of embodiment 2 gained gelled fracturing fluid;
Fig. 3 is the flow curve of embodiment 3 gained gelled fracturing fluid.
Embodiment
Below in conjunction with embodiment, the present invention is further illustrated.
The oilfield sewage that embodiment adopts is Henan Oil Field two rivers joint station reinjected water, its main source is crude oil extraction sewage, the waste liquid that the various oil field operation such as poly-produces is joined in fracturing outlet liquid, acidifying, after comprehensive collection, through simple process process such as oily water separation, flocculating settling, filtrations, processing cost 1.2 yuan/m
3.The oilfield sewage water quality analysis adopted is as shown in table 1.
The water quality analysis of table 1 oilfield sewage
| Analysis project | Analytical results | Analysis project | Analytical results |
| Color | Grey | Na +K + | 1692.75mg/l |
| pH | 7.75 | Mg 2+ | 15.19mg/l |
| Outward appearance | There is a small amount of oil slick | Ca 2+ | 35.07mg/l |
| Smell | Smelly | Cl - | 1329.38mg/l |
| Oil-containing | 14mg/l | SO4 2- | 294.42mg/l |
| Iron content | 0.2mg/l | HCO 3 - | 2013.33mg/l |
| Organic impurities | 12mg/l | Fe | 0.5mg/l |
| Salinity | 5380mg/l | B | 8.25mg/l |
Embodiment 1
The gelled fracturing fluid of the employing oilfield sewage preparation of the present embodiment, comprise the component of following weight percent: water conditioner 0.03%, isothiazolinone (sterilant) 0.2%, hydroxypropyl guar (viscosifying agent) 0.35%, organic borate cross-linker 0.4%, ammonium persulphate (gel breaker) 0.02%, surplus is oilfield sewage.
Wherein, described water conditioner is the mass ratio of FUMARIC ACID TECH GRADE and disodium ethylene diamine tetraacetate is the mixture of 2:1; Organic borate cross-linker is purchased from Xuan Tai Industrial Co., Ltd. of Xinxiang City.
The preparation method of the gelled fracturing fluid of the employing oilfield sewage preparation of the present embodiment, comprises the following steps:
1) base fluid preparation: get oilfield sewage and be placed in Wu Yin mixed tune device, under agitation condition, slowly add the water conditioner (mixture of FUMARIC ACID TECH GRADE and disodium ethylene diamine tetraacetate) of formula ratio, isothiazolinone, hydroxypropyl guar successively, abundant stirring 15min, to hydroxypropyl guar complete swelling, obtain base fluid;
2) organic borate cross-linker, the ammonium persulphate of getting formula ratio add step 1) in gained base fluid, be stirred to and mix, must the good gelled fracturing fluid of hanging property.
Adopt the temperature and shearing sustainability of RS6000 rheometer test the present embodiment gained gelled fracturing fluid, result as shown in Figure 1.As can be seen from Figure 1, the present embodiment gained gelled fracturing fluid is at 70 DEG C, 170s
-1shear 90 minutes, fracturing liquid tail glues for 168.5mpa.s, shows excellent temperature and shearing sustainability.
Embodiment 2
The gelled fracturing fluid of the employing oilfield sewage preparation of the present embodiment, comprise the component of following weight percent: water conditioner 0.3%, glutaraldehyde (sterilant) 0.2%, hydroxypropyl guar (viscosifying agent) 0.45%, organic borate cross-linker 0.5%, ammonium persulphate (gel breaker) 0.02%, surplus is oilfield sewage.
Wherein, described water conditioner is the mass ratio of hydrochloric acid and disodium ethylene diamine tetraacetate is the mixture of 1:3; Organic borate cross-linker is purchased from Xuan Tai Industrial Co., Ltd. of Xinxiang City.
The preparation method of the gelled fracturing fluid of the employing oilfield sewage preparation of the present embodiment, comprises the following steps:
1) base fluid preparation: get oilfield sewage and be placed in Wu Yin mixed tune device, under agitation condition, slowly add the water conditioner (mixture of hydrochloric acid and disodium ethylene diamine tetraacetate) of formula ratio, glutaraldehyde, hydroxypropyl guar successively, abundant stirring 15min, to hydroxypropyl guar complete swelling, obtain base fluid;
2) organic borate cross-linker, the ammonium persulphate of getting formula ratio add step 1) in gained base fluid, be stirred to and mix, must the good gelled fracturing fluid of hanging property.
Adopt the temperature and shearing sustainability of RS6000 rheometer test the present embodiment gained gelled fracturing fluid, result as shown in Figure 2.As can be seen from Figure 2, the present embodiment gained gelled fracturing fluid is at 90 DEG C, 170s
-1shear 90 minutes, fracturing liquid tail glues for 139.5mpa.s, shows excellent temperature and shearing sustainability.
Embodiment 3
The gelled fracturing fluid of the employing oilfield sewage preparation of the present embodiment, comprise the component of following weight percent: water conditioner 0.3%, glutaraldehyde (sterilant) 0.2%, carboxy-methyl hydroxy propyl guanidine glue (viscosifying agent) 0.5%, organic borate cross-linker 0.5%, ammonium persulphate (gel breaker) 0.02%, surplus is oilfield sewage.
Wherein, described water conditioner is the mass ratio of FUMARIC ACID TECH GRADE and disodium EDTA is the mixture of 1:1; Organic borate cross-linker is purchased from Xuan Tai Industrial Co., Ltd. of Xinxiang City.
The preparation method of the gelled fracturing fluid of the employing oilfield sewage preparation of the present embodiment, comprises the following steps:
1) base fluid preparation: get oilfield sewage and be placed in Wu Yin mixed tune device, under agitation condition, slowly add water conditioner (mixture of FUMARIC ACID TECH GRADE and disodium ethylene diamine tetraacetate), glutaraldehyde, the carboxy-methyl hydroxy propyl guanidine glue of formula ratio successively, abundant stirring 15min, to carboxy-methyl hydroxy propyl guanidine glue complete swelling, obtain base fluid;
2) organic borate cross-linker, the ammonium persulphate of getting formula ratio add step 1) in gained base fluid, be stirred to and mix, must the good gelled fracturing fluid of hanging property.
Adopt the temperature and shearing sustainability of RS6000 rheometer test the present embodiment gained gelled fracturing fluid, result as shown in Figure 3.As can be seen from Figure 3, the present embodiment gained gelled fracturing fluid is at 90 DEG C, 170s
-1shear 90 minutes, fracturing liquid tail glues for 258.3mpa.s, shows excellent temperature and shearing sustainability.
Embodiment 4
The gelled fracturing fluid of the employing oilfield sewage preparation of the present embodiment, comprise the component of following weight percent: water conditioner 1.0%, glutaraldehyde (sterilant) 0.3%, hydroxypropyl guar (viscosifying agent) 0.8%, organic borate cross-linker 0.1%, ammonium persulphate (gel breaker) 0.5%, surplus is oilfield sewage.
Wherein, described water conditioner is the mass ratio of hydrochloric acid and disodium EDTA is the mixture of 1:2; Organic borate cross-linker is purchased from Xuan Tai Industrial Co., Ltd. of Xinxiang City.
The preparation method of the gelled fracturing fluid of the employing oilfield sewage preparation of the present embodiment, comprises the following steps:
1) base fluid preparation: get oilfield sewage and be placed in Wu Yin mixed tune device, under agitation condition, slowly add the water conditioner (mixture of hydrochloric acid and disodium ethylene diamine tetraacetate) of formula ratio, glutaraldehyde, hydroxypropyl guar successively, abundant stirring 15min, to hydroxypropyl guar complete swelling, obtain base fluid;
2) organic borate cross-linker, the ammonium persulphate of getting formula ratio add step 1) in gained base fluid, be stirred to and mix, must the good gelled fracturing fluid of hanging property.
Adopt the temperature and shearing sustainability of RS6000 rheometer test the present embodiment gained gelled fracturing fluid.Test result shows, the present embodiment gained gelled fracturing fluid is at 120 DEG C, 170s
-1shear 90 minutes, fracturing liquid tail glues for 175mpa.s, shows excellent temperature and shearing sustainability.
Embodiment 5
The gelled fracturing fluid of the employing oilfield sewage preparation of the present embodiment, comprise the component of following weight percent: water conditioner 0.7%, isothiazolinone (sterilant) 0.1%, carboxy-methyl hydroxy propyl guanidine glue (viscosifying agent) 0.1%, organic borate cross-linker 0.2%, ammonium persulphate (gel breaker) 0.1%, surplus is oilfield sewage.
Wherein, described water conditioner is the mass ratio of FUMARIC ACID TECH GRADE and disodium EDTA is the mixture of 1:1; Organic borate cross-linker is purchased from Xuan Tai Industrial Co., Ltd. of Xinxiang City.
The preparation method of the gelled fracturing fluid of the employing oilfield sewage preparation of the present embodiment, comprises the following steps:
1) base fluid preparation: get oilfield sewage and be placed in Wu Yin mixed tune device, under agitation condition, slowly add water conditioner (mixture of FUMARIC ACID TECH GRADE and disodium ethylene diamine tetraacetate), isothiazolinone, the carboxy-methyl hydroxy propyl guanidine glue of formula ratio successively, abundant stirring 15min, to carboxy-methyl hydroxy propyl guanidine glue complete swelling, obtain base fluid;
2) organic borate cross-linker, the ammonium persulphate of getting formula ratio add step 1) in gained base fluid, be stirred to and mix, must the good gelled fracturing fluid of hanging property.
Adopt the temperature and shearing sustainability of RS6000 rheometer test the present embodiment gained gelled fracturing fluid.Test result shows, the present embodiment gained gelled fracturing fluid is at 70 DEG C, 170s
-1shear 90 minutes, fracturing liquid tail glues for 74mpa.s, shows excellent temperature and shearing sustainability.
Experimental example
The performance of this experimental example to embodiment 1-5 gained gelled fracturing fluid detects.Result is as shown in table 2.
The performance test results of table 2 embodiment 1-5 gained gelled fracturing fluid
| Project | PH value | Anti-dilative, % | Stratum injuring rate, % |
| Detection method | PH meter | SY/T5107-2005 | SY/T5107-2005 |
| Embodiment 1 | 7.5 | 87.8 | 18 |
| Embodiment 2 | 7.2 | 92.0 | 21 |
| Embodiment 3 | 7.4 | 88.1 | 22.5 |
| Embodiment 4 | 7.4 | 90.4 | 34 |
| Embodiment 5 | 7.3 | 86.5 | 11 |
| Clear water comparative example | 9.4 | 78.2 | 38 |
Wherein, clear water comparative example is the gelled fracturing fluid according to the conventional clear water preparation being widely used in each oil field at present: the component comprising following weight percent: 0.45% hydroxypropyl guar, 1% expansion-resisting agent KCl, 0.1% sterilant formaldehyde, 0.05% delayed crosslinker NaOH, 0.5% borax, surplus is clear water.
As can be seen from Table 2, the anti-swollen property of the gelled fracturing fluid of the employing waste water of (1) embodiment 1-5 gained, between 86.5 ~ 92.0%, is all greater than 85%, apparently higher than the injury rate (78.2%) of clear water preparation gelled fracturing fluid.(2) the core damage rate of the gelled fracturing fluid of the employing waste water of embodiment 1-5 gained is substantially between 11% ~ 22.5%, even if when guanidine gum concentration reaches 0.8%, injury rate is still less than the injury rate of 0.45% guanidine gum concentration gelled fracturing fluid of clear water preparation.(3) pH of the gelled fracturing fluid of the employing waste water of embodiment 1-5 gained is between 7 ~ 7.5, is suitable for formation volumes wide, avoids the injury on the responsive stratum such as quick to alkali, acid-sensitive.And adopt clear water to prepare gelled fracturing fluid, usually need to add NaOH to returning in discharge opeing to improve of the fracturing fluid temperature and shearing sustainability and controlling crosslinking time, control 9 ~ 12 by of the fracturing fluid pH value, this can cause serious injury alkali sensitivity stratum, thus reduces its fracturing reform effect.(4) gelled fracturing fluid of the employing waste water of embodiment 1-5 gained does not need the interpolation of expansion-resisting agent, makes full use of stratum compatibleness and the high salinity characteristic of oilfield sewage, can effectively reduce dosing cost, reduces the use of fracturing fluid additive.
Experimental result shows, the gelled fracturing fluid of this waste water of employing of the present invention, owing to not carrying out excess processes to sewage, but to taking full advantage of high salinity in sewage, the characteristic good with stratum compatibleness, the formula that a whole set of is applicable to waste water gelled fracturing fluid is formed for wastewater characteristics, therefore the present invention not only has the Significance of Sustainable Development saving clear water resource, and relatively and clear water prepare gelled fracturing fluid, fracturing liquid of the present invention has good anti-swollen property and lower ground layer injury rate.
Claims (9)
1. the gelled fracturing fluid adopting oilfield sewage to prepare, it is characterized in that: the component comprising following weight percent: water conditioner 0.01% ~ 1%, sterilant 0.01% ~ 0.5%, viscosifying agent 0.1% ~ 0.8%, linking agent 0.1% ~ 0.5%, gel breaker 0.01% ~ 0.5%, surplus is oilfield sewage.
2. the gelled fracturing fluid of employing oilfield sewage preparation according to claim 1, is characterized in that: described water conditioner is the mixture of pH adjusting agent and disodium edta; In described water conditioner, the mass ratio of pH adjusting agent and disodium edta is 1 ~ 2:1 ~ 3.
3. the gelled fracturing fluid of employing oilfield sewage preparation according to claim 2, is characterized in that: described pH adjusting agent is hydrochloric acid or FUMARIC ACID TECH GRADE.
4. the gelled fracturing fluid of employing oilfield sewage according to claim 1 preparation, is characterized in that: described sterilant is any one or combination in glutaraldehyde, isothiazolinone.
5. the gelled fracturing fluid of employing oilfield sewage preparation according to claim 1, is characterized in that: described viscosifying agent is hydroxypropyl guar or carboxy-methyl hydroxy propyl guanidine glue.
6. the gelled fracturing fluid of employing oilfield sewage according to claim 1 preparation, is characterized in that: described linking agent to be pH value be 7 ~ 8 organic borate cross-linker.
7. the gelled fracturing fluid of employing oilfield sewage preparation according to claim 1, is characterized in that: described gel breaker is ammonium persulphate.
8. the gelled fracturing fluid of the employing oilfield sewage preparation according to any one of claim 1-7, is characterized in that: described oilfield sewage is oilfield produced waste water, any one or a few mixture in poly-fracturing wastewater is joined in fracturing outlet liquid, flushing fluid, acidifying.
9. the preparation method adopting the gelled fracturing fluid of oilfield sewage preparation as claimed in claim 1, is characterized in that: comprise the following steps:
1) get oilfield sewage, add water conditioner, sterilant, viscosifying agent successively, stir, to viscosifying agent complete swelling, obtain base fluid;
2) get linking agent, gel breaker add step 1) in gained base fluid, mix, obtain described gelled fracturing fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510303072.8A CN105038757A (en) | 2015-06-04 | 2015-06-04 | Gel fracturing fluid prepared from oilfield sewage and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510303072.8A CN105038757A (en) | 2015-06-04 | 2015-06-04 | Gel fracturing fluid prepared from oilfield sewage and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105038757A true CN105038757A (en) | 2015-11-11 |
Family
ID=54445739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510303072.8A Pending CN105038757A (en) | 2015-06-04 | 2015-06-04 | Gel fracturing fluid prepared from oilfield sewage and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105038757A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108997995A (en) * | 2018-07-12 | 2018-12-14 | 中国石油集团西部钻探工程有限公司 | The fracturing fluid and preparation method thereof prepared using oilfield sewage |
| CN109679641A (en) * | 2018-11-14 | 2019-04-26 | 中国石油集团西部钻探工程有限公司 | The fracturing fluid and preparation method thereof that high salinity salt lake saline is prepared |
| CN111454706A (en) * | 2020-01-21 | 2020-07-28 | 克拉玛依金昇油田助剂有限公司 | Naphthenic petroleum sulfonate compound oil displacement agent for fracturing fluid and preparation method thereof |
| CN111500273A (en) * | 2020-05-21 | 2020-08-07 | 盘锦派普环保科技有限公司 | Method for preparing fracturing fluid after water-based drilling fluid sewage treatment |
| CN114015429A (en) * | 2021-10-29 | 2022-02-08 | 西安石油大学 | Method for preparing water-based fracturing fluid by using water-based fracturing flow-back fluid |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103074049A (en) * | 2013-01-21 | 2013-05-01 | 西南石油大学 | Fracturing fluid prepared by recovery waste water of crude oil and preparation method of fracturing fluid |
| CN103160263A (en) * | 2013-03-08 | 2013-06-19 | 中国石油天然气股份有限公司 | Method for preparing base fluid of fracturing fluid by using oil field well site waste water |
| CN104610954A (en) * | 2015-02-15 | 2015-05-13 | 陕西延长石油(集团)有限责任公司研究院 | Formula and preparation method suitable for preparing fracturing fluid from continental facies shale gas well fracturing flow-back fluid treatment water |
-
2015
- 2015-06-04 CN CN201510303072.8A patent/CN105038757A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103074049A (en) * | 2013-01-21 | 2013-05-01 | 西南石油大学 | Fracturing fluid prepared by recovery waste water of crude oil and preparation method of fracturing fluid |
| CN103160263A (en) * | 2013-03-08 | 2013-06-19 | 中国石油天然气股份有限公司 | Method for preparing base fluid of fracturing fluid by using oil field well site waste water |
| CN104610954A (en) * | 2015-02-15 | 2015-05-13 | 陕西延长石油(集团)有限责任公司研究院 | Formula and preparation method suitable for preparing fracturing fluid from continental facies shale gas well fracturing flow-back fluid treatment water |
Non-Patent Citations (1)
| Title |
|---|
| 王满学: "用油田回注污水配制水基压裂液的研究与应用", 《石油钻探技术》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108997995A (en) * | 2018-07-12 | 2018-12-14 | 中国石油集团西部钻探工程有限公司 | The fracturing fluid and preparation method thereof prepared using oilfield sewage |
| CN109679641A (en) * | 2018-11-14 | 2019-04-26 | 中国石油集团西部钻探工程有限公司 | The fracturing fluid and preparation method thereof that high salinity salt lake saline is prepared |
| CN109679641B (en) * | 2018-11-14 | 2021-10-29 | 中国石油天然气集团有限公司 | Fracturing fluid prepared from high-salinity salt lake water and preparation method thereof |
| CN111454706A (en) * | 2020-01-21 | 2020-07-28 | 克拉玛依金昇油田助剂有限公司 | Naphthenic petroleum sulfonate compound oil displacement agent for fracturing fluid and preparation method thereof |
| CN111500273A (en) * | 2020-05-21 | 2020-08-07 | 盘锦派普环保科技有限公司 | Method for preparing fracturing fluid after water-based drilling fluid sewage treatment |
| CN114015429A (en) * | 2021-10-29 | 2022-02-08 | 西安石油大学 | Method for preparing water-based fracturing fluid by using water-based fracturing flow-back fluid |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105038757A (en) | Gel fracturing fluid prepared from oilfield sewage and preparation method thereof | |
| CN104099077B (en) | A kind of high salinity reservoirs compound oil displacement agent | |
| CN107794030B (en) | Peptide-like recoverable clean fracturing fluid | |
| CN103059829B (en) | Nanometer emulsion type water control fracturing fluid for tight gas reservation well and preparation method thereof | |
| CN104531123A (en) | Foam flooding agent for thick oil and preparation method thereof | |
| CN104946230A (en) | Clean fracturing fluid suitable for oil field water and preparing method thereof | |
| CN108084986A (en) | A kind of recyclable polymer fracturing fluid crosslinking agent and its preparation method and application | |
| CN103742118A (en) | Modified guar fracturing fluid recycling method | |
| CN105838494A (en) | Environment-friendly concentrated solution for hydraulic support and preparation method of environment-friendly concentrated solution | |
| CN102516961A (en) | Organic/inorganic crosslinking system plugging agent applicable to high-temperature oil reservoir | |
| CN102757773A (en) | High-inhibition non-solid phase alkaline completion fluid | |
| CN105086986A (en) | High-temperature-resistant recyclable clean fracturing fluid for gas wells | |
| CN109722235B (en) | Guanidine gum fracturing fluid system prepared from thickened oil hot water and preparation method thereof | |
| CN116622357A (en) | Salt-tolerant thickened oil viscosity reducing composition, viscosity reducer and application thereof | |
| CN105967306A (en) | Water-soluble polymer solution degrading agent, and preparation method and application thereof | |
| CN103666440B (en) | A kind of acid solution instant dissolving viscosifier and its preparation method | |
| CN105647508A (en) | Recyclable clean fracturing fluid prepared by oilfield produced water | |
| CN106854463B (en) | Recyclable fracturing fluid and preparation method thereof and application method | |
| CN102796506B (en) | Ampholytic surfactant fracturing fluid | |
| CN103305203A (en) | Anti-swelling oil-displacing agent as well as preparing method and using method thereof | |
| CN105062456A (en) | Cross-linking agent, hydroxypropyl guanidine gum fracturing fluid system and preparation method of hydroxypropyl guanidine gum fracturing fluid system | |
| CN104109535B (en) | A kind of fracturing liquid colloid protective agent and application thereof | |
| CN104861954B (en) | A kind of thickening method that guanidine gum fracturing fluid is prepared with oil field extracted water | |
| CN115404068B (en) | Foaming agent for carbon dioxide flooding and preparation method thereof | |
| CN112280548A (en) | Artificial polymer fracturing liquid system prepared from thickened oil hot water and application of artificial polymer fracturing liquid system in field of reservoir transformation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151111 |
|
| RJ01 | Rejection of invention patent application after publication |