CN110139910A - Crosslinking agent paste compound and application - Google Patents
Crosslinking agent paste compound and application Download PDFInfo
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- CN110139910A CN110139910A CN201780082206.5A CN201780082206A CN110139910A CN 110139910 A CN110139910 A CN 110139910A CN 201780082206 A CN201780082206 A CN 201780082206A CN 110139910 A CN110139910 A CN 110139910A
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- 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
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- 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
- C09K8/70—Compositions for forming crevices or fractures characterised by their form or by the form of their components, e.g. foams
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- 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
- C09K8/887—Compositions based on water or polar solvents containing organic compounds macromolecular compounds containing cross-linking agents
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- 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
- C09K8/92—Compositions for stimulating production by acting on the underground formation characterised by their form or by the form of their components, e.g. encapsulated material
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Abstract
A method of the subsurface formations that are penetrated by pit shaft of processing, which comprises a. utilize comprising boric acid, five water sodium tetraborates, pH adjusting agent, hydrocarbon fluid and organophilic clay composition;B. the composition is merged with the mixture comprising tackifier and aqueous medium to form treatment fluid;The stratum is contacted to handle the stratum with the treatment fluid with c..
Description
Technical field
The embodiment of the disclosure is related to the method and composition for handling subsurface formations.Specifically, the reality of the disclosure
The scheme of applying is related to the method and composition for delivering and handling using crosslinking agent subsurface formations.
Background technique
Some statements only provide background information relevant to the disclosure, and may not constitute the prior art.
The fluid with the viscosity individually adjusted for various physics and electrochemical conditions is needed to handle subsurface formations to return
Receive hydro carbons.In general, tackifier are introduced into fluid in order to reach specific viscosity, pump then along pit shaft so that formation rock
Stone rupture.There are many type of tackifier commercially available for this purpose.However, generally selecting the increasing of sub-fraction commerical grade
Stick come using.These tackifier can benefit from the presence of crosslinking agent, be glued with increasing or otherwise adjusting resulting fluid
Degree.Selective cross-linking agent is because they can promote the crosslinking of tackifier according to formation condition and tackifier characteristic.Borate is handed over
The fluid of connection is better than the fluid of metal corsslinking, because the former is insensitive to mechanical shearing and can to restore it after shearing viscous
Degree.The success that industry has realized that good shear restoration handles hydraulic fracturing is important.Industry is it is known that use boric acid
The fracturing fluid based on guar gum of salt crosslinking can greatly restore its viscosity after high shear.Known reduction Polymer-supported can change
Kind fracture condudtiviy, but it can also reduce the ability restored after fluid viscosity and shearing.What preparation was used in low temperature environment
One of the ultimate challenge of the Guar fracturing fluid of low polymer load is to ensure that reasonable high viscosity and short shear restoration time.
Summary of the invention
The embodiment of the disclosure is related to a kind of method of subsurface formations for handling and being penetrated by pit shaft, which comprises
A. it utilizes comprising composition below: boric acid;Five water sodium tetraborates;PH adjusting agent;Hydrocarbon fluid;And organophilic clay;B. will
The composition merges with the mixture comprising tackifier and aqueous medium to form treatment fluid;Make stratum and the processing with c.
Liquid is contacted to handle stratum.
The embodiment of the disclosure is related to a kind of method of subsurface formations for handling and being penetrated by pit shaft, which comprises
A. the drying composite of boric acid, five water sodium tetraborates and pH adjusting agent is prepared, the pH adjusting agent is selected from the group being made up of:
Calcium hydroxide, potassium hydroxide, sodium hydroxide, potassium carbonate, amine-containing compound or combinations thereof;B. by the drying composite with comprising
Hydrocarbon fluid and the thickening fluid media (medium) of organophilic clay merge to form composition;C. the composition and tackifier will be included
Merge with the mixture of aqueous medium to form treatment fluid;Stratum is contacted to handle stratum with the treatment fluid with d..
The embodiment of the disclosure is related to a kind of method for preparing composition, which comprises
A. the drying composite of boric acid, five water sodium tetraborates and pH adjusting agent is prepared, the pH adjusting agent is selected from by following
The group of composition: calcium hydroxide, potassium hydroxide, sodium hydroxide, potassium carbonate, amine-containing compound or combinations thereof;With b. by the drying
Mixture merges with the thickening fluid media (medium) comprising hydrocarbon fluid and organophilic clay to form composition.
Detailed description of the invention
Fig. 1 is the curve graph of viscosity and shear rate as the function of time, and it illustrates an embodiment party of the disclosure
The rheological curves of the various fracturing fluids with different Polymer-supporteds of case.
Fig. 2 is the curve graph of viscosity and shear rate as the function of time, and it illustrates an embodiment party of the disclosure
The shear rate of the various fracturing fluids with different Polymer-supporteds of case is restored.
The viscosity and shear rate that Fig. 3 is the fracturing fluid of the various crosslinkings of another embodiment of the invention are as the time
The curve graph of function, the fracturing fluid include the gel breaker for crushing and not crushing.
Specific embodiment
First, it is noted that in the exploitation of what such actual implementation scheme in office, be made that many specific to reality
The decision of existing mode is to realize the objectives different because of implementation of developer, such as in accordance with system correlation and business phase
The constraint of pass.However, it should be understood that this development effort may be complicated and time-consuming, but will benefit from
The normal work to do of those skilled in the art of the disclosure.Description and embodiment are merely to illustrate certain implementations of the disclosure
The purpose of scheme, and should not be construed as the limitation to the range and applicability of disclosure.Although herein by composition
Be described as comprising certain materials, but it is to be understood that, the composition optionally including two or more chemically not
Same material.In addition, composition also may include some components in addition to those of having quoted.
In summary of the invention and in the description herein, each numerical value should be primary (unless by being read by term " about " modification
Through clearly so modification), it is then primary by being read without so modification again.In addition, in summary of the invention and in this detailed description,
It is intended to it should be understood that being listed or being described as useful, suitable etc. concentration range so that any and every in the range
What a concentration (including endpoint) was considered as having stated.For example, " 1 to 10 range " be considered as indicating about 1 with about
Each possible number in continuum between 10.Therefore, even if particular data point in range, or do not have in range even
There is data point, be identified distinctly or simply mean to a small number of particular data points, it should be appreciated that inventor understands and understands described
Any and all data points in range are considered to have been assigned with, and inventor has disclosed and enables entire scope
With all the points in the range.
In general, by boron (borax, the slurry of solid borax or ulexite, boric acid solution such as dissolved in a variety of forms
And other boron sources) be delivered in polymer solution to be crosslinked.However, as the concentration containing borate crosslinker becomes more to aggravate
It wants, the amount and its rate being added in polymer solution in operation for being transported to the material of processing position are to have in logistics
Meaning.It is a kind of logistic advantages that the chemical addition agent for being used in frac treatment, which is compacted and/or is concentrated as far as possible,.
According to an embodiment, a kind of method of subsurface formations for handling and being penetrated by pit shaft, the method packet are disclosed
Include it is following, be made up of or be substantially made up of: a. utilize comprising it is following, be made up of or substantially by with the following group
At composition: boric acid;Five water sodium tetraborates;PH adjusting agent;Hydrocarbon fluid;And organophilic clay;B. by the composition with
Merge comprising the mixture of tackifier and aqueous medium to form treatment fluid;Stratum is contacted to handle with the treatment fluid with c.
Stratum.
PH adjusting agent can be selected from the group being made up of: calcium hydroxide, sodium hydroxide, potassium carbonate, contains amination at potassium hydroxide
Close object or combinations thereof;And hydrocarbon fluid can be diesel oil or any other non-aqueous fluid medium.Adjustable composition
PH is so that transport, stability and/or the crosslinking feature of composition maximize;And cryogenic applications (the pH range of 68 ℉ to 80 ℉)
It can be 8.90 to about 9.80, and (pH of 200 ℉ to 290 ℉) may range from 12.12 to 12.74 for high temperature application.
Total weight based on composition, the amount of boric acid in the composition can be about 6 weight % to about 13 weight %,
Or about 7 weight % to about 10 weight % or about 7 weight % to about 8 weight %.Total weight based on composition, five water tetraboric acids
The amount of sodium in the composition can be about 6 weight % to about 13 weight % or about 7 weight % to about 10 weight % or about 7
Weight % to about 8 weight %.Total weight based on composition, the amount of pH adjusting agent in the composition can be about 2 weights
Measure % to about 5 weight % or about 2 weight % to about 4 weight % or about 2 weight % to about 3 weight %.Based on the total of composition
Weight, the amount of diesel oil in the composition can be about 65 weight % to about 85 weight % or about 70 weight % to about 85 weights
Measure % or about 75 weight % to about 80 weight %.Total weight based on composition, the amount of organophilic clay in the composition
It can be about 3 weight % to about 4.5 weight % or about 3.5 weight % to about 4.5 weight % or about 3.5 weight % to about 4 weights
Measure %.Composition can free or substantially free of water, or may include the total weight based on composition be less than about 10 weights
Measure % or the water less than 5 weight % or less than 2 weight % or less than 1 weight % or less than 0.5 weight %.
Composition can be with every thousand gallon mixture about 0.5 to about 3 or the addition of about 1 to about 3 or about 1 to about 2 gallon of amount
Into mixture.Amount of the tackifier in treatment fluid can for every thousand gallons for the treatment of fluids at most about 18 or at most about 16 or
At most about 14 or about 14 to about 18 or about 14 to about 16 pounds.The temperature of the subsurface formations handled with treatment fluid can be at most about
30 DEG C or at most about 25 DEG C or at most about 20 DEG C or about 15 DEG C to about 20 DEG C.
Parent can be had by boric acid, five water sodium tetraborates and pH adjusting agent dry mixed to form drying composite
Machine clay is added in hydrocarbon fluid to be formed and viscosify fluid media (medium);And drying composite and thickening fluid media (medium) can be closed
And to form composition as described herein.
Tackifier may include selected from the hydrated polymer of group being made up of: guar gum, by mannose and galactolipin sugar
High molecular weight polysaccharide, guar derivative such as hydroxypropyl guar gum (HPG), carboxymethyl guar gum (CMG) and the carboxylic first of composition
Base hydroxypropyl guar gum (CMHPG), synthetic polymer.Also cellulose derivative, such as hydroxyethyl cellulose can be used
(HEC) or hydroxypropyl cellulose (HPC) and carboxymethyl hydroxyethyl cellulose (CMHEC).Any useful polymer is ok
Cross-linked form uses, or uses in the case where no crosslinking agent in linear form.Xanthan gum, diutan (diutan) and hard
Glucan, these three biopolymers have been demonstrated to can be used as tackifier.Another tackifier are schizophans, in some feelings
It is crosslinked under condition with slowly dynamics and boron: degree under certain conditions > 10 hour.Synthetic polymer, such as but not
It is limited to polyvinyl alcohol, polyacrylamide and polyacrylate polymers and copolymer, is commonly used in high temperature application, but can also be at this
It is used in text.In addition it is possible to use enhancing the association of viscosity characteristics by suitable surfactant and hydrophobically modified polymers
Polymer, it is such as electrically charged poly- in the presence of there is the surfactant with the charge of the opposite charge of charged polymer
The case where closing object, surfactant can form ion-pair formation with polymer, to obtain having dredging for multiple hydrophobic groupings
Water is polymer-modified.
In some embodiments, tackifier be water dispersible non-ionic hydroxyalkyl galactomannan polymer or
Substituted hydroxyalkyl galactomannan polymer.The example of available hydroxyalkyl galactomannan polymer includes but unlimited
In hydroxyl-C1-C4- alkyl galactomannans, such as hydroxyl-C1-C4- alkylated guar gum.The reality of such guar
Example includes molar substitution degree (HE guar gum), hydroxypropyl guar gum (HP guar gum) and hydroxyl butyl guar gum (HB guar gum),
And mixed C2-C4, C2/C3, C3/C4 or C2/C4 guar.Methylol also is present in any of these
In.
As used herein, it is sweet to can be used as hydroxyl-C1-C4- alkyl gala for substituted hydroxyalkyl galactomannan polymer
The substitutive derivative for revealing glycan obtains comprising: 1) the hydroxyalkyl galactomannans of hydrophobically modified, for example, C1-C18- alkyl
Substituted hydroxyalkyl galactomannans, for example, wherein the amount of alkyl substituent can be about the 2 of hydroxyalkyl galactomannans
Weight % or smaller;With the galactomannans of 2) poly- (oxyalkylene) grafting.Its poly- (oxyalkylene) grafting may include two or more
In two alkylene oxide residues;And alkylene oxide residues can be C1-C4 oxyalkylene.It include alkane on hydroxyalkyl galactomannans
The mixing substituted polymer of base substituent group and poly- (oxyalkylene) substituent group is also available herein.In substituted hydroxyalkyl half
In the various embodiments of newborn mannosan, alkyl and/or poly- (oxyalkylene) substituent group and mannose group skeleton remainder
Ratio can be about 1:25 or smaller, i.e., each hydroxyalkyl galactomannan molecule has at least one substituent group;The ratio
Rate can be with are as follows: at least or about 1:2000,1:500,1:100 or 1:50;Or at most or about 1:50,1:40,1:35 or 1:30.?
The combination of galactomannan polymer can be used.
As used herein, galactomannans includes the polymannose backbone for being connected to galactose branches, with 1:1 to 1:
5 galactose branches: the average ratio of mannose remainder exists.Available galactomannans may include 1 → 4 company herein
The 13-D- mannopyranose skeleton connect is connect with α-D- galactopyranose branch 1 → 6.Galactose branches may include 1 to about 5
A galactose residue;In various embodiments, average branch length can be 1 to 2 or 1 to about 1.5 residue.Branch can
To be single galactosyl branch.In various embodiments, galactose branches and the ratio of backbone mannose remainder are average
It can be about 1:1 to 1:3,1:1.5 to 1:2.5 or 1:1.5 to 1:2.In various embodiments, galactomannans can have
Linear polymannose backbone.Galactomannans can be natural or synthesis.Available natural galacto sweet dew is poly- herein
Sugar includes plant and microorganism (for example, fungi) galactomannans.In various embodiments, bean kind can be used
Sub- galactomannans, the example include but is not limited to: tara gum is (for example, come from Caesalpinia spinosaKuntze (Cesalpinia spinosa)
Seed) and guar gum (for example, coming from Guar (Cyamopsis tetragonoloba) seed).In addition, although melon can be referred to
Your glue (such as with reference to hydroxyl-C1-C4- alkylated guar gum) describes or illustrates embodiment, but such description is equally applicable
In other galactomannans.
Mixture also may include any one of following or combination: per molecule has the alcohol of 11 to 14 carbon atoms, and
It is ethoxylation and butoxylated;Tetramethyl ammonium chloride;With ammonium persulfate gel breaker.Ammonium persulfate gel breaker is optional
Free group consisting of: two sulfuric acid diammonium of peroxidating (diammonium peroxidisulphate), the ammonium persulfate encapsulated
And combinations thereof.
According to an embodiment, a kind of method of subsurface formations for handling and being penetrated by pit shaft, the method packet are disclosed
Include it is following, be made up of or be substantially made up of: the drying that a. prepares boric acid, five water sodium tetraborates and pH adjusting agent is mixed
Object is closed, the pH adjusting agent is selected from the group being made up of: calcium hydroxide, sodium hydroxide, potassium carbonate, contains amination at potassium hydroxide
Close object or combinations thereof;B. the drying composite is merged with the thickening fluid media (medium) comprising hydrocarbon fluid and organophilic clay with
Form composition as described herein;It c. include the mixing of tackifier and aqueous medium by the composition and as described herein
Object merges to form treatment fluid as described herein;Stratum is contacted to handle stratum with the treatment fluid with d..
According to an embodiment, a kind of method for preparing composition as described herein is disclosed, which comprises
A. the drying composite of boric acid, five water sodium tetraborates and pH adjusting agent is prepared, the pH adjusting agent is selected from the group being made up of:
Calcium hydroxide, potassium hydroxide, sodium hydroxide, potassium carbonate, amine-containing compound or combinations thereof;It by the drying composite and is wrapped with b.
Hydrocarbon-containifirst fluid and the thickening fluid media (medium) of organophilic clay merge to form composition.
The fluid of tackifier of the introducing based on polymer can have any suitable under treatment temperature as described herein
Viscosity, about 50mPa-s or bigger viscosity number or the shearing speed in about 100s-1 such as under the shear rate of about 100s-1
About 75mPa-s or bigger viscosity number or about 100mPa-s or bigger viscosity under the shear rate of about 100s-1 under rate
Value.
According to specific formation characteristics and processing intent, fluid can be non-foamed, foaming or energization.Work as introducing
When, gas component is includable and can be generated by any suitable gas, when being introduced into aqueous medium, the gas
Body forms foam or energization fluid.Gas component includes the gas selected from the group being made up of: nitrogen, air, carbon dioxide
And its any mixture.In some cases, gas component can help to fracturing operation and/or well scale removal process.Fluid can contain
There is the gas component of the about 10 volume % to about 90 volume % based on total fluid percent by volume, or is based on total fluid volume hundred
Divide the gas component of the about 30 volume % to about 80 volume % of ratio, or the about 40 volume % based on total fluid percent by volume are extremely
The gas component of about 70 volume %.
Treatment fluid can also contain other additives and chemicals.These include but is not limited to material such as below: table
Face activating agent, gel breaker, ternary complex, oxygen scavenger, alkaline pH adjusting agent, clay stabilizer (that is, KCl, TMAC), high temperature are steady
Determine agent, alcohol, proppant, antisludging agent, corrosion inhibitor, fluid loss additive, fungicide etc..In some embodiments,
One of these components, part or all can be encapsulated.In addition, they may include cosurfactant to optimize viscosity
Or minimize the formation of the stable emulsion of the component containing crude oil.
The processing of subsurface formations can be the hydraulic fracturing processing of subsurface formations.Technology for hydraulic fracturing subsurface formations
It is known to those skilled in the art, and can be related to being pumped into fracturing fluid in drilling and flow out to week
In exclosure layer.Fluid pressure is higher than minimum in situ rock stress, to generate or extend crack in the earth formation.Referring to
Stimulation Engineering Handbook,John W.Ely,Pennwell Publishing Co.,Tulsa,
Okla. (1994), U.S. Patent number 5,551,516 (Normal etc.), " Oilfield Applications ",
Encyclopedia of Polymer Science and Engineering, volume 10, the 328-366 pages (John
Wiley&Sons, Inc.New York, N.Y., 1987) and references cited therein, the disclosure of which passes through herein draws
With being incorporated herein.
In most cases, hydraulic fracturing is made up of: (usually by the viscous fluid or prepad fluid that are free of proppant
It is that there are some fluid additives to generate highly viscous water) it is allowed to escape into stratum than fluid and is quickly pumped into well,
So that pressure rise and rock rupture, to generate man-made fracture and/or expand existing crack.Then, by proppant particles
It is added in fluid to form slurry, the slurry is pumped into crack to prevent its closing in pumping pressure release.Place
The proppant of reason base fluid, which suspends, traditionally depends on the type of the tackifier of addition with conveying capacity.
In frac treatment, the fluid of such as process described herein liquid can be used for preposition processing, proppant stage or two
Person.The component for the treatment of fluid can mix on the ground.Alternatively, a part for the treatment of fluid can be prepared on the ground (such as such as this
Composition described in text and/or mixture) and pump it along pipeline, and another part can be pumped along annular space in well
Lower mixing.
Another embodiment includes being cleared up using treatment fluid as described herein.Term " cleaning " or " crack is clear
Reason " refers to the process of removes fracturing fluid after fracturing process completion from crack and pit shaft (without proppant).For promoting
It is related to reducing the viscosity of fracturing fluid as much as possible on the technology tradition of crack cleaning, so that it is easier to flow back into pit shaft.
In another embodiment, slurry and fluid as described herein can be used for gravel packed well cylinder.As gravel
Packing fluid, it may include gravel or sand and other optional additives, and such as filter cake clears up reagent (all chelas as mentioned above
Mixture or acid (such as hydrochloric acid, hydrofluoric acid, formic acid, acetic acid, citric acid)), corrosion inhibitor, antisludging agent, biocide, sew
Controlling agent etc..For this application, suitable gravel or sand usually have the serial purpose sieve mesh of 8 to 70 Unite States Standards sieve big
It is small.
Following embodiment is provided to illustrate the preparation and characteristic of some embodiments of the disclosure, and should not be solved
It is interpreted as limitation range, unless in addition explicitly pointing out in the dependent claims.All percentages, concentration, ratio, number etc. are equal
By weight, apparent unless otherwise stated or from the context that it is used.
Embodiment
Slurry crosslinker composition is prepared according to the disclosure, and its group component is as shown in table 1 below.
Table 1: slurry crosslinker composition
The several pressure break liquid formulation for rheology test is prepared according to the disclosure, amount is as shown in table 2.
Table 2: the pressure break liquid formulation for test
Ppt=pounds/1000 gallons of *
Gpt=gallons/1000 gallons of *
Fig. 1 shows the fluid rheology curve of pressure break liquid formulation A, B and C, wherein the polymer that the fracturing fluid uses
Load changes from 14 pounds/1000 gallons to 18 pounds/1000 gallons.When being tested under 68 ℉ (20 DEG C), the respective table of fluid preparation
Reveal the viscosity greater than 100cP@100s-1.
Fig. 2 shows pressure break liquid formulation A, B and C (respectively loading with low polymer) to have acceptable shear restoration.
Fig. 3 is shown when testing under 68 ℉ (20 DEG C), and fluid preparation D, E and F of crosslinking can be by using having pressed
The ammonium persulfate gel breaker (preparation F) of broken encapsulating and the non-encapsulated ammonium persulfate gel breaker (formulation C) of use are ruptured.
Particular embodiments disclosed above is merely illustrative, because the disclosure can be according to benefiting from present teachings
Those skilled in the art are obvious different but equivalent mode is modified and practiced.Furthermore, it is not intended to showing herein
Details out is limited, and described in the appended claims except.It will therefore be apparent that above-disclosed specific reality
The scheme of applying can be altered or modified, and all such variations are all considered as in the scope of the present disclosure and spirit.Therefore, originally
It is illustrated in the claims as follows of protection sought by text.
Claims (28)
1. a kind of method for handling the subsurface formations penetrated by pit shaft, which comprises
A. it utilizes comprising composition below:
Boric acid;
Five water sodium tetraborates;
PH adjusting agent;
Hydrocarbon fluid;With
Organophilic clay;
B. the composition is merged with the mixture comprising tackifier and aqueous medium to form treatment fluid;And
The stratum is contacted with the treatment fluid to handle the stratum.
2. the method as described in claim 1, wherein the pH adjusting agent is selected from the group being made up of: calcium hydroxide, hydrogen-oxygen
Change potassium, sodium hydroxide, potassium carbonate, amine-containing compound or combinations thereof;And the hydrocarbon fluid is diesel oil.
3. method according to claim 2, in which:
Based on the total weight of the composition, the amount of the boric acid in the composition is about 6 weight % to about 13 weights
Measure %;
Based on the total weight of the composition, the amount of the five water sodium tetraborate in the composition is about 6 weight %
To about 13 weight %;
Based on the total weight of the composition, the amount of the pH adjusting agent in the composition is about 2 weight % to about 5
Weight %;
Based on the total weight of the composition, the amount of the diesel oil in the composition is about 65 weight % to about 85 weights
Measure %;And
Based on the total weight of the composition, the amount of the organophilic clay in the composition be about 3 weight % extremely
About 4.5 weight %.
4. method as claimed in any one of claims 1-3, wherein the composition is with every thousand gallons of mixtures about 0.5
It is added in the mixture to about 3 gallons of amounts.
5. such as method of any of claims 1-4, wherein by the boric acid, the five water sodium tetraborate and the pH
Regulator dry mixed is added to the hydrocarbon fluid to form drying composite, by the organophilic clay to form thickening stream
Body medium;And the drying composite is merged with the thickening fluid media (medium) to form the composition.
6. method according to any one of claims 1 to 5, wherein the tackifier include selected from the group being made up of
Hydrated polymer: guar gum, the high molecular weight polysaccharide, the guar derivative such as hydroxypropyl that are made of mannose and galactolipin sugar
Guar gum (HPG), carboxymethyl guar gum (CMG) and carboxymethyl hydroxypropyl guar gum (CMHPG), synthetic polymer, cellulose spread out
Biology, synthetic polymer, compound containing guar gum and combinations thereof.
7. such as method of any of claims 1-6, wherein amount of the tackifier in the treatment fluid is
At most 18 pounds of every thousand gallons for the treatment of fluids.
8. such as method of any of claims 1-7, wherein the temperature of the subsurface formations handled with the treatment fluid
Degree is at most 30 DEG C.
9. such as method of any of claims 1-8, wherein the mixture also includes that per molecule has 11 to 14
Carbon atom and be ethoxylation and butoxylated alcohol.
10. method as claimed in any one of claims 1-9 wherein, wherein the mixture also includes tetramethyl ammonium chloride.
11. such as method of any of claims 1-10, wherein the mixture also includes ammonium persulfate gel breaker.
12. method as claimed in claim 11, wherein the ammonium persulfate gel breaker is selected from the group being made up of: peroxidating
Two sulfuric acid diammoniums, ammonium persulfate of encapsulating and combinations thereof.
13. such as method of any of claims 1-12, wherein the total weight based on the composition, the composition
Water comprising being less than about 10 weight %.
14. a kind of method for handling the subsurface formations penetrated by pit shaft comprising:
A. the drying composite of boric acid, five water sodium tetraborates and pH adjusting agent is prepared, the pH adjusting agent is selected from and is made up of
Group: calcium hydroxide, potassium hydroxide, sodium hydroxide, potassium carbonate, amine-containing compound or combinations thereof;
B. the drying composite is merged with the thickening fluid media (medium) comprising hydrocarbon fluid and organophilic clay and is combined with being formed
Object;
C. the composition is merged with the mixture comprising tackifier and aqueous medium to form treatment fluid;And
The stratum is contacted with the treatment fluid to handle the stratum.
15. method as claimed in claim 14, wherein the hydrocarbon fluid is diesel oil.
16. method as claimed in claim 15, in which:
Based on the total weight of the composition, the amount of the boric acid in the composition is about 6 weight % to about 13 weights
Measure %;
Based on the total weight of the composition, the amount of the five water sodium tetraborate in the composition is about 6 weight %
To about 13 weight %;
Based on the total weight of the composition, the amount of the pH adjusting agent in the composition is about 2 weight % to about 5
Weight %;
Based on the total weight of the composition, the amount of the diesel oil in the composition is about 65 weight % to about 85 weights
Measure %;And
Based on the total weight of the composition, the amount of the organophilic clay in the composition be about 3 weight % extremely
About 4.5 weight %.
17. the method as described in any one of claim 14-16, wherein the composition with every thousand gallons of mixtures about
0.5 to about 3 gallon of amount is added in the mixture.
18. the method as described in any one of claim 14-17, wherein the tackifier include selected from the group being made up of
Hydrated polymer: guar gum, the high molecular weight polysaccharide, the guar derivative such as hydroxypropyl that are made of mannose and galactolipin sugar
Base guar gum (HPG), carboxymethyl guar gum (CMG) and carboxymethyl hydroxypropyl guar gum (CMHPG), synthetic polymer, cellulose
Derivative, synthetic polymer, compound containing guar gum and combinations thereof.
19. the method as described in any one of claim 14-18, wherein amount of the tackifier in the treatment fluid
It is at most 18 pounds of every thousand gallons for the treatment of fluids.
20. the method as described in any one of claim 14-19, wherein the subsurface formations handled with the treatment fluid
Temperature is at most 30 DEG C.
21. the method as described in any one of claim 14-20, wherein the mixture also includes that per molecule has 11 to 14
A carbon atom and the alcohol are ethoxylation and butoxylated alcohol.
22. the method as described in any one of claim 14-21, wherein the mixture also includes tetramethyl ammonium chloride.
23. the method as described in any one of claim 14-22, wherein the mixture also includes to be selected to be made up of
The ammonium persulfate gel breaker of group: two sulfuric acid diammonium of peroxidating, ammonium persulfate of encapsulating and combinations thereof.
24. the method as described in any one of claim 14-23, wherein the total weight based on the composition, the combination
Object includes the water less than about 10 weight %.
25. a kind of method for preparing composition comprising:
A. the drying composite of boric acid, five water sodium tetraborates and pH adjusting agent is prepared, the pH adjusting agent is selected from and is made up of
Group: calcium hydroxide, potassium hydroxide, sodium hydroxide, potassium carbonate, amine-containing compound or combinations thereof;And
B. the drying composite is merged with the thickening fluid media (medium) comprising hydrocarbon fluid and organophilic clay described to be formed
Composition.
26. method as claimed in claim 25, wherein the hydrocarbon fluid is diesel oil.
27. method as claimed in claim 26, in which:
Based on the total weight of the composition, the amount of the boric acid in the composition is about 6 weight % to about 13 weights
Measure %;
Based on the total weight of the composition, the amount of the five water sodium tetraborate in the composition is about 6 weight %
To about 13 weight %;
Based on the total weight of the composition, the amount of the pH adjusting agent in the composition is about 2 weight % to about 5
Weight %;
Based on the total weight of the composition, the amount of the diesel oil in the composition is about 65 weight % to about 85 weights
Measure %;And
Based on the total weight of the composition, the amount of the organophilic clay in the composition be about 3 weight % extremely
About 4.5 weight %.
28. the method as described in any one of claim 25-27, wherein the total weight based on the composition, the combination
Object includes the water less than about 10 weight %.
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WO2016033533A1 (en) * | 2014-08-29 | 2016-03-03 | Independence Oilfield Chemicals, LLC | Method and materials for hydraulic fracturing with delayed crosslinking of gelling agents |
CN106062306A (en) * | 2014-01-24 | 2016-10-26 | 斯伦贝谢技术有限公司 | Method of reusing untreated produced water in hydraulic fracturing |
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EP0594363A1 (en) * | 1992-10-20 | 1994-04-27 | Halliburton Company | Borate crosslinked fracturing fluids |
US6024170A (en) * | 1998-06-03 | 2000-02-15 | Halliburton Energy Services, Inc. | Methods of treating subterranean formation using borate cross-linking compositions |
US9284483B2 (en) * | 2009-08-07 | 2016-03-15 | Schlumberger Technology Corporation | Aqueous crosslinker slurry compositions and applications |
US20140290943A1 (en) * | 2013-03-29 | 2014-10-02 | Schlumberger Technology Corporation | Stabilized Fluids In Well Treatment |
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CN106062306A (en) * | 2014-01-24 | 2016-10-26 | 斯伦贝谢技术有限公司 | Method of reusing untreated produced water in hydraulic fracturing |
WO2016033533A1 (en) * | 2014-08-29 | 2016-03-03 | Independence Oilfield Chemicals, LLC | Method and materials for hydraulic fracturing with delayed crosslinking of gelling agents |
CN107257838A (en) * | 2014-08-29 | 2017-10-17 | 独立油田化学制品有限公司 | Method and material for the delayed crosslinked hydraulic fracturing with gelling agent |
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