CN106398659A - Calcium fluoride stabilizing agent - Google Patents
Calcium fluoride stabilizing agent Download PDFInfo
- Publication number
- CN106398659A CN106398659A CN201610768944.2A CN201610768944A CN106398659A CN 106398659 A CN106398659 A CN 106398659A CN 201610768944 A CN201610768944 A CN 201610768944A CN 106398659 A CN106398659 A CN 106398659A
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- China
- Prior art keywords
- calcium fluoride
- parts
- water
- stabilizing agent
- scale inhibitor
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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
- C09K8/02—Well-drilling compositions
- C09K8/03—Specific additives for general use in well-drilling compositions
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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
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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
- C09K8/72—Eroding chemicals, e.g. acids
- C09K8/74—Eroding chemicals, e.g. acids combined with additives added for specific purposes
-
- 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
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- 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)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention relates to a calcium fluoride stabilizing agent. The calcium fluoride stabilizing agent is composed of a polyphosphate scale inhibitor, an organic acid scale inhibitor, a dispersant, a chelating agent, and water. The preparation method comprises the following steps: adding water into a reactor, starting a stirrer, slowly adding a polyphosphate scale inhibitor, an organic acid scale inhibitor, a dispersant, and a chelating agent into water according to a ratio, and stirring until all components are fully mixed to obtain the calcium fluoride stabilizing agent. The provided calcium fluoride stabilizing agent has the characteristics of high temperature resistant property and good stabilizing effect, can effectively solve the problems that fluorides generated in acidification operation of oil and gas field exploitation obstruct the pore throats of reservoir stratum and the in-place permeability is reduced, largely improves the oil flowing channels, and increases the output of oil wells.
Description
Technical field
The invention belongs to the preparing technical field of chemical products, it is related to suppression calcium fluoride in a kind of oil gas field acidizing treatment and produces
Raw calcium fluoride stabilizer.
Background technology
During exploitation of oil-gas field, after oil well experiences the exploitation of a period of time, reduced pressure, the crude oil of earth formation deep is not
Easily produce.One of measure in the past adopting on this question is by injecting certain density acid solution in oil well so as to and stratum
Rock reacts, and then improves in-place permeability, improves oil stream channel, reaches the purpose of oil well production increasing.
Hydrochloric acid or mud acid (mixture of hydrochloric acid and Fluohydric acid .) is mainly adopted to carry out at present in the acid treatment operation of sandstone
Acidifying.During soil acid acidizing, due to the calcium in the Fluohydric acid. that exists therebetween carbonate easily and in sandstone, calcium montmorillonite, calcite
Ionic reaction, produces acid-sensitive mineral calcium fluoride thing precipitation, blocks reservoir pore throat, so reduce in-place permeability on the contrary, to storage
Layer brings new infringement.Therefore, invent a kind of stabilizer for calcium fluoride as early as possible, and calcium fluoride can efficiently be suppressed with this
Produce, be one of this area urgent problem.
Content of the invention
It is an object of the invention to the problem that prior art is existed is solved, provide a kind of energy effectively solving oil gas field
The fluoride precipitation blocking reservoir pore throat phenomenon producing in exploitation acidifying measure operation is thus improving oil stream channel, ensureing oil gas field
The calcium fluoride stabilizer of volume increase.
The technical solution adopting for realizing above goal of the invention is as described below.
A kind of calcium fluoride stabilizer, is made up of the raw material of substance of following mass percents：
The preparation method of this calcium fluoride stabilizer is：In proportion by polyphosphoric acid salt antisludging agent, organic acid antisludging agent, divide
Powder and chelating agen are slowly added in reactor, are simultaneously introduced water, stir to being sufficiently mixed, get product.
In above-mentioned calcium fluoride stabilizer, polyphosphoric acid salt antisludging agent is sodium tripolyphosphate, one kind of sodium hexameta phosphate or mixed
Compound.
In above-mentioned calcium fluoride stabilizer, organic acid antisludging agent be ATMP, HEDP, EDTMPS, PBTCA, BHMTPMPA,
One or more of DTPMPA.
In above-mentioned calcium fluoride stabilizer, dispersant is one or more of PAA, PAAS, T225.
In above-mentioned calcium fluoride stabilizer, chelating agen is one of citric acid, ethylenediaminetetraacetic acid or mixture.
In above-mentioned calcium fluoride stabilizer, water is first water.
In prescription of the present invention, polyphosphoric acid salt antisludging agent belongs to the negative electrode antisludging agent of deposition membranous type, with bivalent metal ion
Ca2+Deng forming gluey complex ion, it is deposited on metal cathode surface and forms protecting film, thus reaching stable scale inhibition purpose；Organic
Acids antisludging agent mainly makes crystalchecked by slowing down crystal growth and distortion of lattice effect；Dispersant is anion or nonionic
Type polymer, can be adsorbed on the crystal grain of foulant, changes the original charge condition of grain surface so as to band identical charges, sharp
Hinder crystal mutually to collide with electrostatic repulsion and deposit；Chelating agen utilizes the coordinate bond in molecule, easy and scaling cations Ca2+Shape
Become stable soluble chelating agent, comparatively increased the dissolubility of calcium salt, play chelating solubilization.
Compared with prior art, the invention has the beneficial effects as follows：It is good that this calcium fluoride stabilizer has high temperature resistant, stablizing effect
Good the features such as, the fluoride precipitation blocking reservoir pore throat produce in measure operation, reduction can be acidified by effectively solving exploitation of oil-gas field
The problem of in-place permeability, can dramatically improve oil stream channel, reach the purpose of oil well production increasing.
Specific embodiment
The invention will be further described with reference to embodiments, but the practical application form of the present invention is not limited to
Following embodiments.
Embodiment 1：
The calcium fluoride stabilizer that the present invention provides is based on quality parts ratio by following material composition：2 parts of sodium tripolyphosphate, six
2.5 parts of Polymeric sodium metaphosphate., 2 parts of 40 parts of 3.5 parts of 2.5 parts of EDTMPS, PBTCA, PAA, PAAS, 3.5 parts of citric acid, 44 parts of water.
Preparation method：In proportion sodium tripolyphosphate, sodium hexameta phosphate, EDTMPS, PBTCA, PAA, PAAS, citric acid are delayed
Slowly it is added in reactor, is simultaneously introduced water, stir to being sufficiently mixed, get product.
Embodiment 2：
The calcium fluoride stabilizer that the present invention provides is based on quality parts ratio by following material composition：1.5 parts of sodium tripolyphosphate,
3.5 parts of sodium hexameta phosphate, 3.5 parts of 50 parts of 2.5 parts of 3.5 parts of ATMP, DTPMPA, PAA, T225,3 parts of ethylenediaminetetraacetic acid,
32.5 parts of water.
Preparation method：In proportion by sodium tripolyphosphate, sodium hexameta phosphate, ATMP, DTPMPA, PAA, T225, ethylenediamine tetraacetic
Acetic acid is slowly added in reactor, is simultaneously introduced water, stirs to being sufficiently mixed, gets product.
Embodiment 3：
The calcium fluoride stabilizer that the present invention provides is based on quality parts ratio by following material composition：4.5 parts of sodium tripolyphosphate,
3 parts of 55 parts of 2.5 parts of 3.5 parts of ATMP, HEDP, PAA, T225,3.5 parts of ethylenediaminetetraacetic acid, 28 parts of water.
Preparation method：In proportion sodium tripolyphosphate, ATMP, HEDP, PAA, T225, ethylenediaminetetraacetic acid are slowly added into
To in reactor, it is simultaneously introduced water, stir to being sufficiently mixed, get product.
Embodiment 4：
The calcium fluoride stabilizer that the present invention provides is based on quality parts ratio by following material composition：5 parts of sodium tripolyphosphate,
2.5 parts of 45 parts of 2.5 parts of 2 parts of 3.5 parts of ATMP, EDTMPS, DTPMPA, PAA, T225,4.5 parts of ethylenediaminetetraacetic acid, water 35
Part.
Preparation method：In proportion by sodium tripolyphosphate, ATMP, EDTMPS, DTPMPA, PAA, T225, ethylenediaminetetraacetic acid
It is slowly added in reactor, is simultaneously introduced water, stir to being sufficiently mixed, get product.
Embodiment 5：
The calcium fluoride stabilizer that the present invention provides is based on quality parts ratio by following material composition：2.5 parts of sodium tripolyphosphate,
3.5 parts of sodium hexameta phosphate, 57 parts of 4.5 parts of 3.5 parts of 2.5 parts of 3.5 parts of ATMP, EDTMPS, PBTCA, BHMTPMPA, PAA,
2.5 parts of T225,2.5 parts of citric acid, 3.5 parts of ethylenediaminetetraacetic acid, 14.5 parts of water.
Preparation method：In proportion by sodium tripolyphosphate, sodium hexameta phosphate, ATMP, EDTMPS, PBTCA, BHMTPMPA,
PAA, T225, citric acid, ethylenediaminetetraacetic acid are slowly added in reactor, are simultaneously introduced water, stir to being sufficiently mixed, that is,
Obtain finished product.
Embodiment 6：
The calcium fluoride stabilizer that the present invention provides is based on quality parts ratio by following material composition：2 parts of sodium tripolyphosphate, six
3.5 parts of Polymeric sodium metaphosphate., 3 parts of 56 parts of 4.5 parts of 3.5 parts of 2.5 parts of EDTMPS, PBTCA, BHMTPMPA, PAA, T225, Fructus Citri Limoniae
1.5 parts of acid, 3.5 parts of ethylenediaminetetraacetic acid, 20 parts of water.
Preparation method：In proportion by sodium tripolyphosphate, sodium hexameta phosphate, EDTMPS, PBTCA, BHMTPMPA, PAA,
T225, citric acid, ethylenediaminetetraacetic acid are slowly added in reactor, are simultaneously introduced water, stir to being sufficiently mixed, obtain final product into
Product.
The product of the calcium fluoride stabilizer of foregoing embodiments preparation is applied to extend certain oil recovery factory's measure operation process
In.Gather scaled calcium fluoride from measure operation, be ground to powder, at 95 DEG C, weigh 8g calcium fluoride dirt powder respectively
It is dissolved in the calcium fluoride stabilizer and conventional stabilizer of 20g examples detailed above preparation, result see table：
Result shows, the calcium fluoride stabilizer treatment calcium fluoride dirt obtained by the present invention, and its dissolution rate is more than the steady of routine
Determine the dissolution rate of agent, may be up to 99.5%.It can be seen that this calcium fluoride stabilizer can at high temperature high-efficiency dissolution and stablize calcium fluoride dirt,
Efficiently solve the fluoride precipitation blocking reservoir pore throat producing in exploitation of oil-gas field measure operation, reduce asking of in-place permeability
Topic.
Claims (6)
1. a kind of calcium fluoride stabilizer it is characterised in that：It is made up of the raw material of substance of following mass percents：
The preparation method of this calcium fluoride stabilizer is：In proportion by polyphosphoric acid salt antisludging agent, organic acid antisludging agent, dispersant
It is slowly added in reactor with chelating agen, is simultaneously introduced water, stir to being sufficiently mixed, get product.
2. calcium fluoride stabilizer according to claim 1 it is characterised in that：Described polyphosphoric acid salt antisludging agent is trimerization
Sodium phosphate, one kind of sodium hexameta phosphate or mixture.
3. calcium fluoride stabilizer according to claim 1 it is characterised in that：Described organic acid antisludging agent be ATMP,
One or more of HEDP, EDTMPS, PBTCA, BHMTPMPA, DTPMPA.
4. calcium fluoride stabilizer according to claim 1 it is characterised in that：Described dispersant is PAA, PAAS, T225
One or more of.
5. calcium fluoride stabilizer according to claim 1 it is characterised in that：Described chelating agen is citric acid, ethylenediamine
One of tetraacethyl or mixture.
6. calcium fluoride stabilizer according to claim 1 it is characterised in that：Described water is first water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610768944.2A CN106398659A (en) | 2016-08-30 | 2016-08-30 | Calcium fluoride stabilizing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610768944.2A CN106398659A (en) | 2016-08-30 | 2016-08-30 | Calcium fluoride stabilizing agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106398659A true CN106398659A (en) | 2017-02-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610768944.2A Pending CN106398659A (en) | 2016-08-30 | 2016-08-30 | Calcium fluoride stabilizing agent |
Country Status (1)
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| CN (1) | CN106398659A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109810687A (en) * | 2019-03-01 | 2019-05-28 | 中国地质大学（武汉） | A kind of environment-friendly type acidification working solution suitable for the volume increase of hypotonic coalbed methane reservoir |
| CN111560242A (en) * | 2020-05-25 | 2020-08-21 | 西安长庆化工集团有限公司 | Synergist for acidification of earth acid and preparation and use methods thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1042887A (en) * | 1988-11-21 | 1990-06-13 | 康诺科有限公司 | The inhibition of reservoir scale |
| CN1491908A (en) * | 2003-08-20 | 2004-04-28 | 东营联通化工有限责任公司 | Barium-strontium scale resistant agent |
| CN101735786A (en) * | 2008-11-25 | 2010-06-16 | 长江大学 | Barium-strontium scale inhibitor |
| CN101798502A (en) * | 2010-04-09 | 2010-08-11 | 中国石油天然气股份有限公司 | Antisludging agent for preventing deposition of Sr/Ba scale |
| CN103834377A (en) * | 2014-03-11 | 2014-06-04 | 范金彪 | Scale prevention blocking remover for ternary composite water dependent well |
-
2016
- 2016-08-30 CN CN201610768944.2A patent/CN106398659A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1042887A (en) * | 1988-11-21 | 1990-06-13 | 康诺科有限公司 | The inhibition of reservoir scale |
| CN1491908A (en) * | 2003-08-20 | 2004-04-28 | 东营联通化工有限责任公司 | Barium-strontium scale resistant agent |
| CN101735786A (en) * | 2008-11-25 | 2010-06-16 | 长江大学 | Barium-strontium scale inhibitor |
| CN101798502A (en) * | 2010-04-09 | 2010-08-11 | 中国石油天然气股份有限公司 | Antisludging agent for preventing deposition of Sr/Ba scale |
| CN103834377A (en) * | 2014-03-11 | 2014-06-04 | 范金彪 | Scale prevention blocking remover for ternary composite water dependent well |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109810687A (en) * | 2019-03-01 | 2019-05-28 | 中国地质大学（武汉） | A kind of environment-friendly type acidification working solution suitable for the volume increase of hypotonic coalbed methane reservoir |
| CN109810687B (en) * | 2019-03-01 | 2020-11-27 | 中国地质大学（武汉） | Environment-friendly acidizing working fluid suitable for increasing yield of low-permeability coal bed gas reservoir |
| CN111560242A (en) * | 2020-05-25 | 2020-08-21 | 西安长庆化工集团有限公司 | Synergist for acidification of earth acid and preparation and use methods thereof |
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Application publication date: 20170215 |