CN110358520A - Deoxidant for modified brine workover fluid, modified brine workover fluid and preparation method thereof - Google Patents
Deoxidant for modified brine workover fluid, modified brine workover fluid and preparation method thereof Download PDFInfo
- Publication number
- CN110358520A CN110358520A CN201910528153.6A CN201910528153A CN110358520A CN 110358520 A CN110358520 A CN 110358520A CN 201910528153 A CN201910528153 A CN 201910528153A CN 110358520 A CN110358520 A CN 110358520A
- Authority
- CN
- China
- Prior art keywords
- workover fluid
- modified
- brine workover
- modified brine
- brine
- 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
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical class O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 title claims abstract description 146
- 239000012530 fluid Substances 0.000 title claims abstract description 117
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 229940123973 Oxygen scavenger Drugs 0.000 claims abstract description 55
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims abstract description 52
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 claims abstract description 48
- 230000005764 inhibitory process Effects 0.000 claims abstract description 30
- 235000010265 sodium sulphite Nutrition 0.000 claims abstract description 26
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 claims abstract description 25
- 235000019345 sodium thiosulphate Nutrition 0.000 claims abstract description 25
- 235000010323 ascorbic acid Nutrition 0.000 claims abstract description 24
- 229960005070 ascorbic acid Drugs 0.000 claims abstract description 24
- 239000011668 ascorbic acid Substances 0.000 claims abstract description 24
- 239000012267 brine Substances 0.000 claims description 45
- 239000003795 chemical substances by application Substances 0.000 claims description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 241001131796 Botaurus stellaris Species 0.000 claims description 12
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 10
- 239000011575 calcium Substances 0.000 claims description 10
- 229910052791 calcium Inorganic materials 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- 239000011259 mixed solution Substances 0.000 claims description 4
- 238000006392 deoxygenation reaction Methods 0.000 claims 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 24
- 229910052760 oxygen Inorganic materials 0.000 abstract description 24
- 239000001301 oxygen Substances 0.000 abstract description 24
- 239000007789 gas Substances 0.000 abstract description 10
- 238000007254 oxidation reaction Methods 0.000 abstract description 9
- 230000015572 biosynthetic process Effects 0.000 abstract description 5
- 230000002195 synergetic effect Effects 0.000 abstract description 4
- 239000003607 modifier Substances 0.000 abstract 1
- 230000004048 modification Effects 0.000 description 14
- 238000012986 modification Methods 0.000 description 14
- 239000003921 oil Substances 0.000 description 11
- 235000019198 oils Nutrition 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 8
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 6
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 6
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 5
- 239000002253 acid Substances 0.000 description 5
- DLEPCXYNAPUMDZ-UHFFFAOYSA-N butan-2-ylphosphonic acid Chemical compound CCC(C)P(O)(O)=O DLEPCXYNAPUMDZ-UHFFFAOYSA-N 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 5
- 239000011734 sodium Substances 0.000 description 5
- 229910052708 sodium Inorganic materials 0.000 description 5
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 5
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 4
- 239000001110 calcium chloride Substances 0.000 description 4
- 229910001628 calcium chloride Inorganic materials 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000002265 prevention Effects 0.000 description 4
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 3
- ILRSCQWREDREME-UHFFFAOYSA-N dodecanamide Chemical compound CCCCCCCCCCCC(N)=O ILRSCQWREDREME-UHFFFAOYSA-N 0.000 description 3
- 229910052736 halogen Inorganic materials 0.000 description 3
- 150000002367 halogens Chemical class 0.000 description 3
- 229910001629 magnesium chloride Inorganic materials 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 239000011780 sodium chloride Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- GDSOZVZXVXTJMI-SNAWJCMRSA-N (e)-1-methylbut-1-ene-1,2,4-tricarboxylic acid Chemical compound OC(=O)C(/C)=C(C(O)=O)\CCC(O)=O GDSOZVZXVXTJMI-SNAWJCMRSA-N 0.000 description 2
- 208000034657 Convalescence Diseases 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- 150000001408 amides Chemical class 0.000 description 2
- 235000019864 coconut oil Nutrition 0.000 description 2
- 239000003240 coconut oil Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 238000007259 addition reaction Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 125000000446 sulfanediyl group Chemical group *S* 0.000 description 1
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
- C09K8/02—Well-drilling compositions
- C09K8/03—Specific additives for general use in well-drilling compositions
-
- 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
- C09K8/02—Well-drilling compositions
- C09K8/03—Specific additives for general use in well-drilling compositions
- C09K8/035—Organic additives
-
- 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
- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
- C09K8/528—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning inorganic depositions, e.g. sulfates or carbonates
-
- 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
- C09K8/665—Compositions based on water or polar solvents containing inorganic compounds
-
- 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
-
- 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
- C09K2208/28—Friction or drag reducing additives
-
- 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
- C09K2208/34—Lubricant additives
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention discloses a deoxidant for a modified brine workover fluid, the modified brine workover fluid and a preparation method thereof, and belongs to the technical field of oil and gas exploitation. The oxygen scavenger for the modified brine workover fluid comprises the following components in percentage by weight: 78-93% of sodium sulfite, 6-20% of sodium thiosulfate and 1-2% of ascorbic acid. According to the invention, through the synergistic effect of the three components of sodium sulfite, sodium thiosulfate and ascorbic acid, the deoxidant is easy to react with dissolved oxygen in the modified brine workover fluid, most of the dissolved oxygen in the modified brine workover fluid can be consumed, the oxidation reaction of the dissolved oxygen in the modified brine workover fluid and the scale inhibition modifier can be effectively prevented, the modified brine workover fluid is prevented from losing the scale inhibition capability, and formation scaling can not be caused to occur again.
Description
Technical field
The present invention relates to oil-gas mining technical field, in particular to a kind of modified brine workover fluid oxygen scavenger, modified halogen
Water workover fluid and preparation method thereof.
Background technique
In oilfield exploitation procedure, brine workover fluid is injected usually into oil/gas well and carrys out equilibrium strata pressure, to keep
Oil & Gas Productivity.Wherein, brine is divided into bittern water and calcium brine, contains the components such as calcium chloride, calcium sulfate, magnesium chloride, sodium chloride.
In use, brine workover fluid causes formation scaling in order to prevent, and resistance is added generally in brine workover fluid
Dirty modifying agent is modified it.However, above-mentioned modified brine workover fluid when temperature is higher, can increase because of dissolution oxygen activity
Greatly, cause scale inhibition modifying agent to be oxidized, and then lose scale prevention ability, formation scaling is caused to occur again.
Summary of the invention
The embodiment of the invention provides a kind of modified brine workover fluid oxygen scavenger, modified brine workover fluid and its preparation sides
Method can solve the above problem.The technical solution is as follows:
On the one hand, a kind of modified brine workover fluid oxygen scavenger, the modified brine workover fluid oxygen scavenger packet are provided
Include following components in percentage by weight: sodium sulfite 78%~93%, sodium thiosulfate 6%~20%, ascorbic acid 1%~
2%.
In a kind of possible design, the modified brine workover fluid oxygen scavenger includes the group of following weight percent
Point: sodium sulfite 93%, sodium thiosulfate 6%, ascorbic acid 1%.
In a kind of possible design, the modified brine workover fluid oxygen scavenger includes the group of following weight percent
Point: sodium sulfite 85%, sodium thiosulfate 13%, ascorbic acid 2%.
In a kind of possible design, the modified brine workover fluid oxygen scavenger includes the group of following weight percent
Point: sodium sulfite 78%, sodium thiosulfate 20%, ascorbic acid 2%.
On the other hand, a kind of modified brine workover fluid is provided, the modified brine workover fluid includes following weight percent
The component of ratio: brine 92%~97%, scale inhibition modifying agent 1%~3%, modified brine workover fluid described in any of the above embodiments are with removing
Oxygen agent 2%~5%.
In a kind of possible design, the brine is bittern water or calcium brine.
In a kind of possible design, the modified brine workover fluid includes following components in percentage by weight: bittern water
96%, scale inhibition modifying agent 2%, modified brine workover fluid oxygen scavenger 2% described in any of the above embodiments.
In a kind of possible design, the modified brine workover fluid includes following components in percentage by weight: bittern water
94%, scale inhibition modifying agent 2%, modified brine workover fluid oxygen scavenger 4% described in any of the above embodiments.
In a kind of possible design, the modified brine workover fluid includes following components in percentage by weight: calcium brine
92%, scale inhibition modifying agent 3%, modified brine workover fluid oxygen scavenger 5% described in any of the above embodiments.
On the other hand, a kind of preparation method of modified brine workover fluid described in any of the above embodiments, the system are additionally provided
Preparation Method includes:
According to the weight percent of each component, scale inhibition modifying agent is added into brine, and stir evenly, it is molten to form mixing
Liquid；
Modified brine workover fluid oxygen scavenger is added into the mixed solution, and stirs evenly, to obtain the modification
Brine workover fluid.
Technical solution bring beneficial effect provided in an embodiment of the present invention includes at least:
Modified brine workover fluid oxygen scavenger provided in an embodiment of the present invention, by sodium sulfite in oxygen scavenger, thio
The synergistic effect of sodium sulphate and these three components of ascorbic acid easily makes the dissolved oxygen in oxygen scavenger and modified brine workover fluid
It reacts, most dissolved oxygen in modified brine workover fluid can be consumed, can effectively prevent modified brine well workover
Oxidation reaction occurs for dissolved oxygen and scale inhibition modifying agent in liquid, avoids modified brine workover fluid from losing scale prevention ability, will not cause
Formation scaling occurs again.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, embodiment of the present invention will be made into one below
Step ground detailed description.
On the one hand, the embodiment of the invention provides a kind of modified brine workover fluid oxygen scavenger, the modification brine workover fluids
It include following components in percentage by weight with oxygen scavenger: sodium sulfite 78%~93%, sodium thiosulfate 6%~20%, anti-bad
Hematic acid 1%~2%.
Brine workover fluid should be modified below to be described with each component in oxygen scavenger:
For sodium sulfite as main oxygen scavenger, it is anti-that easily oxidation occurs with the dissolved oxygen in modified brine workover fluid in it
It answers: 2Na2SO3+O2→2Na2SO4, most dissolved oxygen in modified brine workover fluid can be consumed, can effectively prevent to be modified
The dissolved oxygen and scale inhibition modifying agent generation oxidation reaction in brine workover fluid afterwards.
For sodium thiosulfate as secondary oxygen scavenger, it is anti-that easily oxidation occurs with the dissolved oxygen in modified brine workover fluid in it
It answers: 2Na2S2O3+O2→2Na2SO4+2S、S+O2→SO2, most dissolved oxygen in modified brine workover fluid can be consumed,
It can effectively prevent dissolved oxygen and scale inhibition modifying agent in modified brine workover fluid that oxidation reaction occurs.
Ascorbic acid is as auxiliary oxygen scavenger, also known as Victoria C, the double bond in it can with it is molten in modified brine workover fluid
It solves oxygen and addition reaction occurs, can further consume most dissolved oxygen in modified brine workover fluid, can effectively prevent to change
Property after brine workover fluid in dissolved oxygen and scale inhibition modifying agent occur oxidation reaction.
As it can be seen that modified brine workover fluid oxygen scavenger provided in an embodiment of the present invention, passes through sodium sulfite, sodium thiosulfate
With the synergistic effect of ascorbic acid these three components, easily reacts, can disappear with the dissolved oxygen in modified brine workover fluid
Consume most dissolved oxygen in modified brine workover fluid, can effectively prevent dissolved oxygen in modified brine workover fluid with
Oxidation reaction occurs for scale inhibition modifying agent, avoids modified brine workover fluid from losing scale prevention ability, formation scaling will not be caused to send out again
It is raw.
In the embodiment of the present invention, sodium sulfite, sodium thiosulfate and ascorbic acid are that purity is powdered greater than 90%
Solid.By the way that the purity of sodium sulfite, sodium thiosulfate and ascorbic acid is set greater than 90%, for example, 90.9%,
99%, 99.9%, 99.99%, it is ensured that modified brine workover fluid oxygen scavenger removes dissolved oxygen in modified brine workover fluid
Ability.In addition, kind of a modified halogen can be made by the way that sodium sulfite, sodium thiosulfate and ascorbic acid are arranged to pulverulent solids
Water workover fluid can be quickly and evenly dissolved in modified brine workover fluid with oxygen scavenger, do not needed additional process processing, saved
Modified brine workover fluid prepares time and expense, the effect that construction is simple, working strength can be brought low.
As an example, in the embodiment of the present invention, which may particularly include following heavy with oxygen scavenger
Measure the component of percentage: sodium sulfite 93%, sodium thiosulfate 6%, ascorbic acid 1%.
As another example, in the embodiment of the present invention, which may particularly include following with oxygen scavenger
The component of weight percent: sodium sulfite 85%, sodium thiosulfate 13%, ascorbic acid 2%.
As another example, in the embodiment of the present invention, which may particularly include following with oxygen scavenger
The component of weight percent: sodium sulfite 78%, sodium thiosulfate 20%, ascorbic acid 2%.
Modified brine workover fluid provided by above-mentioned three kinds of examples can effectively ensure that modified brine workover fluid exists with oxygen scavenger
Still there is good scale inhibition effect under high temperature.
On the other hand, the embodiment of the invention provides a kind of modified brine workover fluid, the modification brine workover fluid include with
The component of lower weight percent: brine 92%~97%, scale inhibition modifying agent 1%~3%, modified brine described in any of the above embodiments
Workover fluid oxygen scavenger 2%~5%.
Modified brine workover fluid provided in an embodiment of the present invention, by sodium sulfite in oxygen scavenger, sodium thiosulfate with
The synergistic effect of these three components of ascorbic acid easily occurs the dissolved oxygen in oxygen scavenger and modified brine workover fluid anti-
It answers, most dissolved oxygen in modified brine workover fluid can be consumed, can effectively prevent in modified brine workover fluid
Oxidation reaction occurs for dissolved oxygen and scale inhibition modifying agent, avoids modified brine workover fluid from losing scale prevention ability, stratum will not be caused to tie
Dirt occurs again.
In the embodiment of the present invention, the density of brine can be 1.15g/cm3~1.45g/cm3.By the way that the close of brine is arranged such
Degree, can satisfy the workover treatment requirement of Different Strata pressure, prevent that well kick, blowout occurs when workover treatment.
In the embodiment of the present invention, brine can be bittern water or calcium brine.Wherein, bittern water be called bittern, halogen alkali, be by
Remain on the mother liquor in salt pond after seawater or salt lake saline salt manufacturing, main component has magnesium chloride, calcium sulfate, calcium chloride and sodium chloride
Deng the density of bittern water is generally 1.21~1.26g/cm3.In addition, calcium brine is the brine being made into industrial calcium chloride, mainly
Component has calcium chloride and a small amount of calcium sulfate, magnesium chloride, sodium chloride etc., and the density of calcium brine may be up to 1.45g/cm3。
As an example, in the embodiment of the present invention, which includes following components in percentage by weight:
Brine 96%, scale inhibition modifying agent 2%, modified brine workover fluid oxygen scavenger 2% described in any of the above embodiments.
As another example, in the embodiment of the present invention, which includes the group of following weight percent
Point: brine 94%, scale inhibition modifying agent 2%, modified brine workover fluid oxygen scavenger 4% described in any of the above embodiments.
As another example, in the embodiment of the present invention, which includes the group of following weight percent
Point: brine 92%, scale inhibition modifying agent 3%, modified brine workover fluid oxygen scavenger 5% described in any of the above embodiments.
Modified brine workover fluid provided by above-mentioned three kinds of examples can effectively ensure that modified brine workover fluid at high temperature still
So there is good scale inhibition effect.Wherein, the scale inhibition modifying agent in above-mentioned modified brine workover fluid may include following mass fraction
Component: 2- phosphonobutane -1,2,10 parts -20 parts of four sodium of 4- trihydroxy acid；5 parts -10 parts of Sodium Polyacrylate；Coconut oil diethanol
2 parts -3 parts of amide；0.2 part -0.5 part of polyether-modified silicon；Remaining is water.
On the other hand, the embodiment of the invention provides the preparation method of modification brine workover fluid described above, the preparations
Method includes:
According to the weight percent of each component, scale inhibition modifying agent is added into brine, and stir evenly, it is molten to form mixing
Liquid；
Modified brine workover fluid oxygen scavenger is added into mixed solution, and stirs evenly, to obtain modified brine well workover
Liquid.
Wherein, modified brine workover fluid is prepared in the following way with oxygen scavenger: according to the weight percent of each component
Than sequentially adding sodium sulfite, sodium thiosulfate, ascorbic acid in container (such as beaker), and stir evenly.
Hereinafter the present invention will be further described through by specific embodiment.
In following specific embodiments, condition person is not specified in related operation, according to normal conditions or manufacturer
It is recommended that condition carry out.It is raw materials used production firm is not specified and specification person be can be with conventional products that are commercially available.
Wherein, bittern water, calcium brine are laboratory configuration, and 2- phosphonobutane -1,2, four sodium of 4- trihydroxy acid is purchased from Hebei
Blue clear water handles company, Science and Technology Ltd., and Sodium Polyacrylate is purchased from company, Guangzhou Ze Long Chemical Industry Science Co., Ltd, coconut oil
Diglycollic amide is purchased from company, Jiangsu Hai'an Petrochemical Plant, and polyether-modified silicon is purchased from the emerging limited public affairs of quotient's goods and materials in Ningbo City Zhenghai
Company, department, sodium sulfite are purchased from Jinan Hong Bo Chemical Co., Ltd., and sodium thiosulfate is purchased from Jinan Jia Yang Chemical Co., Ltd., resist
Bad hematic acid is purchased from Hebei Hong Tao bio-engineering corporation.
Embodiment 1
Present embodiments provide a kind of modified brine workover fluid, preparation method are as follows: to mass fraction be 96 parts and density
For 1.15g/cm3Bittern water in mass fraction is added is 2 parts of scale inhibition modifying agent；It is to be mixed uniformly after, continuously add quality
Number is 2 parts of modification brine workover fluid oxygen scavenger, and stirs evenly, to obtain the modification brine workover fluid.
Wherein, which includes the component of following mass fraction: 2- phosphonobutane -1,2, four sodium of 4- trihydroxy acid
15 parts；10 parts of Sodium Polyacrylate；3 parts of lauric acid amide of ethanol；0.5 part of polyether-modified silicon；Remaining is water.The modification brine is repaired
Well liquid oxygen scavenger includes the component of following mass fraction: 93 parts of sodium sulfite, 6 parts of sodium thiosulfate, 1 part of ascorbic acid.
Modified brine workover fluid provided by the present embodiment is applied in A oil gas field workover operation construction, knot to be onstructed
Shu Hou, the recovery rate of oil gas well production are 130.9%, and oil production increases to 3.56 ton/days, after operation by 2.72 ton/days before operation
Convalescence is 2.6 days.
Embodiment 2
Present embodiments provide a kind of modified brine workover fluid, preparation method are as follows: to mass fraction be 94 parts and density
For 1.20g/cm3Bittern water in mass fraction is added is 2 parts of scale inhibition modifying agent；It is to be mixed uniformly after, continuously add quality
Number is 4 parts of modification brine workover fluid oxygen scavenger, and stirs evenly, to obtain the modification brine workover fluid.
Wherein, which includes the component of following mass fraction: 2- phosphonobutane -1,2, four sodium of 4- trihydroxy acid
20 parts；5 parts of Sodium Polyacrylate；3 parts of lauric acid amide of ethanol；0.5 part of polyether-modified silicon；Remaining is water.The modification brine is repaired
Well liquid oxygen scavenger includes the component of following mass fraction: 85 parts of sodium sulfite, 13 parts of sodium thiosulfate, 2 parts of ascorbic acid.
Modified brine workover fluid provided by the present embodiment is applied in B oil gas field workover operation construction, knot to be onstructed
Shu Hou, the recovery rate of oil gas well production are 400%, and oil production increases to 2.12 ton/days by 0.53 ton/day before operation, extensive after operation
The multiple phase is 2 days.
Embodiment 3
Present embodiments provide a kind of modified brine workover fluid, preparation method are as follows: to mass fraction be 92 parts and density
For 1.235g/cm3Calcium brine in mass fraction is added is 3 parts of scale inhibition modifying agent；It is to be mixed uniformly after, continuously add quality
Number is 5 parts of modification brine workover fluid oxygen scavenger, and stirs evenly, to obtain the modification brine workover fluid.
Wherein, which includes the component of following mass fraction: 2- phosphonobutane -1,2, four sodium of 4- trihydroxy acid
10 parts；10 parts of Sodium Polyacrylate；3 parts of lauric acid amide of ethanol；0.5 part of polyether-modified silicon；Remaining is water.The modification brine is repaired
Well liquid oxygen scavenger includes the component of following mass fraction: 78 parts of sodium sulfite, 20 parts of sodium thiosulfate, 2 parts of ascorbic acid.
Modified brine workover fluid provided by the present embodiment is applied in C oil gas field workover operation construction, knot to be onstructed
Shu Hou, the recovery rate of oil gas well production are 220.5%, and oil production increases to 1.72 ton/days, after operation by 0.78 ton/day before operation
Convalescence is 2 days.
All the above alternatives can form the alternative embodiment of the disclosure, herein no longer using any combination
It repeats one by one.
The foregoing is merely illustrative embodiments of the invention, the protection scope being not intended to limit the invention is all at this
Within the spirit and principle of invention, any modification, equivalent replacement, improvement and so on should be included in protection model of the invention
Within enclosing.
Claims (10)
1. a kind of modified brine workover fluid oxygen scavenger, which is characterized in that the modified brine workover fluid oxygen scavenger include with
The component of lower weight percent: sodium sulfite 78%~93%, sodium thiosulfate 6%~20%, ascorbic acid 1%~2%.
2. modified brine workover fluid oxygen scavenger according to claim 1, which is characterized in that the modified brine workover fluid
It include following components in percentage by weight with oxygen scavenger: sodium sulfite 93%, sodium thiosulfate 6%, ascorbic acid 1%.
3. modified brine workover fluid oxygen scavenger according to claim 1, which is characterized in that the modified brine workover fluid
It include following components in percentage by weight with oxygen scavenger: sodium sulfite 85%, sodium thiosulfate 13%, ascorbic acid 2%.
4. modified brine workover fluid oxygen scavenger according to claim 1, which is characterized in that the modified brine workover fluid
It include following components in percentage by weight with oxygen scavenger: sodium sulfite 78%, sodium thiosulfate 20%, ascorbic acid 2%.
5. a kind of modified brine workover fluid, which is characterized in that the modified brine workover fluid includes the group of following weight percent
Point: the described in any item modified brine workover fluid deoxygenations of brine 92%~97%, scale inhibition modifying agent 1%~3%, right 1~4
Agent 2%~5%.
6. modified brine workover fluid according to claim 5, which is characterized in that the brine is bittern water or calcium brine.
7. modified brine workover fluid according to claim 6, which is characterized in that the modified brine workover fluid includes following
The component of weight percent: the described in any item modified brine workover fluids of bittern water 96%, scale inhibition modifying agent 2%, right 1~4
With oxygen scavenger 2%.
8. modified brine workover fluid according to claim 6, which is characterized in that the modified brine workover fluid includes following
The component of weight percent: the described in any item modified brine workover fluids of bittern water 94%, scale inhibition modifying agent 2%, right 1~4
With oxygen scavenger 4%.
9. modified brine workover fluid according to claim 6, which is characterized in that the modified brine workover fluid includes following
The component of weight percent: the described in any item modified brine workover fluids of calcium brine 92%, scale inhibition modifying agent 3%, right 1~4
With oxygen scavenger 5%.
10. a kind of preparation method of such as described in any item modified brine workover fluids of claim 5~9, which is characterized in that described
Preparation method includes:
According to the weight percent of each component, scale inhibition modifying agent is added into brine, and stir evenly, to form mixed solution；
Modified brine workover fluid oxygen scavenger is added into the mixed solution, and stirs evenly, to obtain the modified brine
Workover fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910528153.6A CN110358520A (en) | 2019-06-18 | 2019-06-18 | Deoxidant for modified brine workover fluid, modified brine workover fluid and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910528153.6A CN110358520A (en) | 2019-06-18 | 2019-06-18 | Deoxidant for modified brine workover fluid, modified brine workover fluid and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110358520A true CN110358520A (en) | 2019-10-22 |
Family
ID=68216331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910528153.6A Pending CN110358520A (en) | 2019-06-18 | 2019-06-18 | Deoxidant for modified brine workover fluid, modified brine workover fluid and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110358520A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6619399B1 (en) * | 2003-03-12 | 2003-09-16 | Halliburton Energy Services, Inc. | Foamed compositions and methods of use in subterranean zones |
| CN102321457A (en) * | 2011-07-25 | 2012-01-18 | 中国石油大学(华东) | Drilling fluid high-temperature stabilizer |
| CN104109512A (en) * | 2013-04-16 | 2014-10-22 | 北京力会澜博能源技术有限公司 | Low temperature fuzzy-ball working fluid fluff agent |
| CN104448128A (en) * | 2013-09-24 | 2015-03-25 | 中国石油化工股份有限公司 | Polymer mobility control agent suitable for high-temperature and high-salinity harsh reservoir and preparation method of polymer mobility control agent |
| CN105524605A (en) * | 2015-12-09 | 2016-04-27 | 中国石油天然气股份有限公司 | Modifier for preventing bittern scaling |
| CN105820803A (en) * | 2015-01-04 | 2016-08-03 | 中国石油天然气股份有限公司 | Workover fluid and preparation method and application thereof |
-
2019
- 2019-06-18 CN CN201910528153.6A patent/CN110358520A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6619399B1 (en) * | 2003-03-12 | 2003-09-16 | Halliburton Energy Services, Inc. | Foamed compositions and methods of use in subterranean zones |
| CN102321457A (en) * | 2011-07-25 | 2012-01-18 | 中国石油大学(华东) | Drilling fluid high-temperature stabilizer |
| CN104109512A (en) * | 2013-04-16 | 2014-10-22 | 北京力会澜博能源技术有限公司 | Low temperature fuzzy-ball working fluid fluff agent |
| CN104448128A (en) * | 2013-09-24 | 2015-03-25 | 中国石油化工股份有限公司 | Polymer mobility control agent suitable for high-temperature and high-salinity harsh reservoir and preparation method of polymer mobility control agent |
| CN105820803A (en) * | 2015-01-04 | 2016-08-03 | 中国石油天然气股份有限公司 | Workover fluid and preparation method and application thereof |
| CN105524605A (en) * | 2015-12-09 | 2016-04-27 | 中国石油天然气股份有限公司 | Modifier for preventing bittern scaling |
Non-Patent Citations (1)
| Title |
|---|
| 李勇 等: "海水除氧剂HC-3的研究与应用", 《油田化学》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105883911B (en) | Fused salt chlorimation slag recycling processing method | |
| CN102976365B (en) | High-calcium edible salt produced by calcium-containing mirabilite-type mineral halide and producing method thereof | |
| CN108467718B (en) | Preparation of clay anti-swelling agent with anti-corrosion effect for water injection | |
| CN104789792B (en) | A kind of technique of nickel citrate catalysis Leaching of Gold Using Thiosulfate | |
| CN102220116A (en) | Composite sodium hypochlorite solution oil well blocking remover | |
| CN105419772A (en) | Polyacrylamide polymer viscosity reducer | |
| CN106512682A (en) | Chlorine-containing tail gas recycling method | |
| CN111004616A (en) | Heavy oil reservoir cold recovery huff and puff self-emulsifying corrosion-inhibition viscosity reducer and preparation method and application thereof | |
| CN110358520A (en) | Deoxidant for modified brine workover fluid, modified brine workover fluid and preparation method thereof | |
| CN103601272B (en) | Adopt the method for dechlorination light salt brine preparation finishing agent | |
| CN101538457A (en) | Composite blocking remover for water injection well and preparation method thereof | |
| US3688829A (en) | Removing scale from oil wells | |
| US3058917A (en) | Liquid dishwashing detergent | |
| CZ293656B6 (en) | Process for preparing polyaluminium chlorosulfate of high basicity and use of such compound | |
| CN115505384B (en) | High-temperature iron ion stabilizer for acidizing and fracturing fluid | |
| CN106833583A (en) | Oil and gas wells in oil fields barite pollution de-plugging agent composition and preparation method thereof | |
| EA200700245A1 (en) | MANUFACTURE OF BLEACHING PRODUCT - CONCENTRATED HYPOCHLORITE WITH LOW CONTENT OF CHLORIDE | |
| CN105419761B (en) | Modifier for preventing calcium halide scaling | |
| CN109336136A (en) | The method for decomposing sodium hypochlorite | |
| CN110387218A (en) | Modified calcium brine workover fluid and preparation method thereof | |
| CN204324912U (en) | A kind of clorox washes the recycle device of waste liquid in producing | |
| CN105314742A (en) | Dedicated anti-scale agent for sulfate section of salt and sulfate co-production system and preparation method of dedicated anti-scale agent | |
| CN111470554A (en) | Composite water treatment agent for boiler | |
| CN102515205A (en) | Process for removing sulfides from brine | |
| CN108003898A (en) | Environment-friendly novel fireproof agent |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191022 |
|
| RJ01 | Rejection of invention patent application after publication |