CN107353373A - A kind of preparation method of drilling fluid sulfomethylated humic acid potassium graft polymers fluid loss additive - Google Patents
A kind of preparation method of drilling fluid sulfomethylated humic acid potassium graft polymers fluid loss additive Download PDFInfo
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- CN107353373A CN107353373A CN201710714840.8A CN201710714840A CN107353373A CN 107353373 A CN107353373 A CN 107353373A CN 201710714840 A CN201710714840 A CN 201710714840A CN 107353373 A CN107353373 A CN 107353373A
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- loss additive
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F289/00—Macromolecular compounds obtained by polymerising monomers on to macromolecular compounds not provided for in groups C08F251/00 - C08F287/00
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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
- C09K8/035—Organic additives
Abstract
A kind of preparation method the invention discloses drilling fluid with sulfomethylated humic acid potassium graft polymers fluid loss additive, with potassium humate, acrylamide, alkyl acrylic, the methyl propane sulfonic acid of 2 acrylamido 2, N vinyl pyrrolidones etc. are raw material, and heat resisting fluid loss reducing agent is prepared by aqueous solution polymerization method, and its synthesis optimum condition is：30 ~ 50 parts of potassium humate, 15 ~ 25 parts of acrylamide, 5 ~ 15 parts of alkyl acrylic, 10 ~ 20 parts of 2 acrylamido, 2 methyl propane sulfonic acid, 5 ~ 15 parts of N vinyl pyrrolidones.The present invention triggers monomer that polymerisation occurs by redox initiator, obtain a kind of macromolecular graft polymers fluid loss additive, the product has good filtrate loss controllability in fresh water, saturated brine and compound salt-water drilling fluid, is resistant to 200 DEG C of high temperature, easy to use.
Description
Technical field
The present invention relates to filtrate reducer for drilling fluid preparation field, more particularly to a kind of drilling fluid is connect with sulfomethylated humic acid potassium
The preparation method of branch polymer filtrate reducer.
Background technology
The loss of drilling fluid is not only resulted in when drilling fluid filtration is excessive, can also cause borehole well instability, cave-in, dirt
Contaminate the various problems such as reservoir.Fluid loss additive is one of maximum material of drillng operation dosage, and appropriate drop is added in drilling fluid
Fluid loss agents can reach good filtrate reducing effect.Once heat resisting fluid loss reducing agent is degraded in drilling fluid, drilling fluid resists
Warm nature, which declines to a great extent, to cause drilling fluid rheology to be deteriorated, drilling fluid flocculation and delamination, or even the pernicious leak-off of appearance, mud cake are thickening
The problems such as, cause the various accidents such as bit freezing, burying, well slough.Domestic conventional sulfonated phenol formaldehyde resin class fluid loss additive and sulphur at present
It is good to change walchowite filtration reduction effect, is resistant to 180 DEG C of high temperature, but dosage is larger, and it is glutinous in the presence of having in salt solution when in use
Degree loss, the defects of easily pollution by high valence ion, seriously limits its application.
In addition with the increasing of oil extraction, many oil fields all enter high temperature deep layer oil-producing region, and exploitation difficulty is increasingly
Greatly, partial mining area requirement fluid loss additive is resistant to 200 DEG C of high temperature above.Temperature-resistant and anti-salt type polymerize species fluid loss additive in oil field
There is very big application potential in exploitation, the present invention develop one kind can high temperature resistance, the fluid loss additive of and can salt resistance, can solve
Certainly drilling fluid filtration problems of too during deep reservoir oil-gas mining, new breakthrough is provided for the exploitation of high temperature Deep Oil And Gas Exploration
Mouthful.
The content of the invention
A kind of system it is an object of the invention to provide drilling fluid with sulfomethylated humic acid potassium graft polymers fluid loss additive
Preparation Method, the fluid loss additive have good filtrate loss controllability in fresh water, saturated brine and compound salt-water drilling fluid, are resistant to
200 DEG C of high temperature, it is easy to use.
A kind of preparation method of drilling fluid heat resisting fluid loss reducing agent, it is characterised in that this method comprises the following steps:
1）60 ~ 100 parts of deionized waters are added in the reactor equipped with 30 ~ 50 parts of potassium humates, after dissolving is stirred at room temperature, use alkali
Property reagent regulation pH to 10 ~ 11, then add 6 ~ 10 parts by weight of formaldehyde, 6 ~ 10 parts by weight sulfonating agent sodium hydrogensulfites, stirring rise
Temperature cools to 70 ~ 75 DEG C after reacting 3 ~ 4h；
2）By 15 ~ 25 parts of acrylamides, 5 ~ 15 parts of alkyl acrylics, 10 ~ 20 parts of 2- acrylamide-2-methylpro panesulfonic acids, 5 ~
15 parts of NVPs add step 1 after being dissolved in 70 ~ 150 parts of deionized waters）Middle reactor, 0.5h is stirred, simultaneously
Add 0.13 ~ 0.25 part and trigger auxiliary agent lactic acid-chromium base bentonite clay material, heating, by 0.27 ~ 0.5 initiator（Sodium peroxydisulfate,
Sodium hydrogensulfite）Wiring solution-forming, slowly it is alternately added in reactor, time for adding 0.5h, in 55 ~ 60 DEG C of guarantors after being added dropwise
Warm 4h, discharging, cooling obtain sulfomethylated humic acid potassium graft polymers fluid loss additive.
Beneficial effect：The present invention provides a kind of preparation of drilling fluid sulfomethylated humic acid potassium graft polymers fluid loss additive
Method, the fluid loss additive saline-alkaline tolerance is strong, and raw material relatively easily obtains, and process, which adds, in preparation process triggers auxiliary agent breast
Acid-chromium base bentonite clay material, it is a kind of high-efficiency activated material, has surprising catalytic performance, is advantageous to synthetic sample mistake
The polymerization of monomer in journey, by molecular chain length control within the required range.With acrylamide, alkyl acrylic, 2- acrylamides
Base -2- methyl propane sulfonic acids, the product that NVP is principal monomer synthesis, heat and salinity tolerance ability protrude, and its
Drilling fluid filtration can be greatly lowered in the dosage of low concentration in drilling fluid.
Embodiment
Embodiment 1
100 parts of deionized waters are added in the reactor equipped with 50 parts of potassium humates, after dissolving is stirred at room temperature, are adjusted with alkaline reagent
PH to 10 ~ 11 is saved, then adds 10 parts by weight of formaldehyde, 10 parts by weight sulfonating agent sodium hydrogensulfites, stirring is warming up to 70 ~ 75 DEG C,
Cool after 3 ~ 4h of reaction,
By 25 parts of acrylamides, 5 parts of alkyl acrylics, 10 parts of 2- acrylamide-2-methylpro panesulfonic acids, 10 parts of N- vinylpyridines
Pyrrolidone adds step 1 after being dissolved in 100 parts of deionized waters）Middle reactor, 0.5h is stirred, while add 0.2 part of initiation auxiliary agent
Lactic acid-chromium base bentonite clay material, heating, by 0.4 part of initiator（Sodium peroxydisulfate, sodium hydrogensulfite, n sodium peroxydisulfates：N sulfurous
Sour sodium=1.3:1）Wiring solution-forming, slowly it is alternately added in reactor, time for adding 0.5h, in 55 ~ 60 DEG C of guarantors after being added dropwise
Warm 4h, discharging, cooling obtain sulfomethylated humic acid potassium graft polymers fluid loss additive.
Above-mentioned lactic acid-chromium base bentonite clay material preparation method is as follows：
Step 1,7.08 parts of chromic nitrates, 18.91 parts of zinc nitrates, 7.35 parts of aluminum nitrates and 5.68 parts of ferric nitrates are dissolved in 100 parts of water
In obtain mixing salt solution；5.35 parts of sodium hydroxides and 2.84 parts of sodium carbonate are dissolved in 50 parts, are configured to mixed ammonium/alkali solutions, will
Mixed ammonium/alkali solutions are slowly dropped in the mixing salt solution being stirred vigorously, and stop that mixing alkali soluble is added dropwise after salt-mixture precipitates completely
Liquid, bottom sediment is taken to stir washing filtering after crystallization 24h, drying for standby at 70 DEG C；
Step 2, excessive hydrochloric acid is evaporated after fully reacting 36 parts of neodymia and 4 parts of mixed in hydrochloric acid, add excessive water, add ammonia
Water precipitates completely to rare earth, filtering, is washed to no chlorion, obtains neodymium hydroxide, neodymium hydroxide is mixed with excessive water, obtained
Suspension, it is heated to adding lactic acid aqueous solution insulation reaction 5h after 60 DEG C while stirring, evaporation excessive water precipitation product, which is crossed, to be filtered dry
It is dry to obtain lactic acid neodymium compound, 50 parts of sodium bentonites are added after lactic acid neodymium compound is mixed with product in step 1 and are pinched
Conjunction obtains lactic acid-chromium base bentonite clay material.Embodiment 2
Identical with embodiment 1, difference is：Add 30 parts of potassium humate, 60 parts of deionized water, 6 parts of formaldehyde, bisulfite
6 parts of sodium；Add 15 parts of acrylamide, 10 parts of alkyl acrylic, 15 parts of 2- acrylamide-2-methylpro panesulfonic acids, N- vinyl
15 parts of pyrrolidones is dissolved in 110 parts of deionized waters, adds 0.17 part and triggers auxiliary agent lactic acid-chromium base bentonite clay material, 0.34 part
Initiator.
Embodiment 3
Identical with embodiment 1, difference is：Add 30 parts of potassium humate, 60 parts of deionized water, 6 parts of formaldehyde, bisulfite
6 parts of sodium；Add 15 parts of acrylamide, 15 parts of alkyl acrylic, 15 parts of 2- acrylamide-2-methylpro panesulfonic acids, N- vinyl
5 parts of pyrrolidones is dissolved in 100 parts of deionized waters, adds 0.16 part and triggers auxiliary agent lactic acid-chromium base bentonite clay material, 0.32 part is drawn
Send out agent.
Embodiment 4
Identical with embodiment 1, difference is：Add 35 parts of potassium humate, 70 parts of deionized water, 7 parts of formaldehyde, bisulfite
7 parts of sodium；Add 15 parts of acrylamide, 5 parts of alkyl acrylic, 20 parts of 2- acrylamide-2-methylpro panesulfonic acids, N- vinylpyridines
10 parts of pyrrolidone is dissolved in 100 parts of deionized waters, adds 0.17 part and triggers auxiliary agent lactic acid-chromium base bentonite clay material, 0.34 part is drawn
Send out agent.
Embodiment 5
Identical with embodiment 1, difference is：Add 40 parts of potassium humate, 80 parts of deionized water, 8 parts of formaldehyde, bisulfite
8 parts of sodium；Add 20 parts of acrylamide, 5 parts of alkyl acrylic, 15 parts of 2- acrylamide-2-methylpro panesulfonic acids, N- vinylpyridines
10 parts of pyrrolidone is dissolved in 100 parts of deionized waters, adds 0.18 part and triggers auxiliary agent lactic acid-chromium base bentonite clay material, 0.36 part is drawn
Send out agent.
Embodiment 6
Identical with embodiment 1, difference is：Add 40 parts of potassium humate, 80 parts of deionized water, 8 parts of formaldehyde, bisulfite
8 parts of sodium；Add 20 parts of acrylamide, 10 parts of alkyl acrylic, 15 parts of 2- acrylamide-2-methylpro panesulfonic acids, N- vinyl
5 parts of pyrrolidones is dissolved in 100 parts of deionized waters, adds 0.18 part and triggers auxiliary agent lactic acid-chromium base bentonite clay material, 0.36 part is drawn
Send out agent.
Embodiment 7
Identical with embodiment 1, difference is：Add 45 parts of potassium humate, 90 parts of deionized water, 9 parts of formaldehyde, bisulfite
9 parts of sodium；Add 20 parts of acrylamide, 5 parts of alkyl acrylic, 15 parts of 2- acrylamide-2-methylpro panesulfonic acids, N- vinylpyridines
15 parts of pyrrolidone is dissolved in 110 parts of deionized waters, adds 0.2 part and triggers auxiliary agent lactic acid-chromium base bentonite clay material, 0.4 part of initiation
Agent.
Embodiment 8
Identical with embodiment 1, difference is：Add 50 parts of potassium humate, 100 parts of deionized water, 10 parts of formaldehyde, sulfurous acid
10 parts of hydrogen sodium；Add 25 parts of acrylamide, 5 parts of alkyl acrylic, 15 parts of 2- acrylamide-2-methylpro panesulfonic acids, N- ethene
5 parts of base pyrrolidones is dissolved in 100 parts of deionized waters, adds 0.2 part and triggers auxiliary agent lactic acid-chromium base bentonite clay material, 0.4 part is drawn
Send out agent.
Embodiment 9
Identical with embodiment 1, difference is：Add 45 parts of potassium humate, 90 parts of deionized water, 9 parts of formaldehyde, bisulfite
9 parts of sodium；Add 25 parts of acrylamide, 5 parts of alkyl acrylic, 15 parts of 2- acrylamide-2-methylpro panesulfonic acids, N- vinylpyridines
15 parts of pyrrolidone is dissolved in 120 parts of deionized waters, adds 0.21 part and triggers auxiliary agent lactic acid-chromium base bentonite clay material, 0.42 part is drawn
Send out agent.
Comparative example 1
Identical with embodiment 1, difference is, is simply added without and triggers auxiliary agent lactic acid-chromium base bentonite clay material.
Comparative example 2
Identical with embodiment 1, difference is, the initiation auxiliary agent simply added be not lactic acid-chromium base bentonite clay material and
It is conventional sodium bentonite.
Comparative example 3
Identical with embodiment 1, difference is：Simply prepare and be added without chromic nitrate when triggering auxiliary agent.
Comparative example 4
Identical with embodiment 1, difference is：Simply prepare and 8.05 parts of chromic nitrates, 9.82 parts of nitric acid are added when triggering auxiliary agent
Zinc, 8.75 parts of aluminum nitrates and 4.04 parts of ferric nitrates.
Comparative example 5
2- acrylamide-2-methylpro panesulfonic acids are replaced with into p-methyl benzenesulfonic acid, remaining is identical with embodiment 1.
Comparative example 6
With embodiment 6, simply it is added without and triggers auxiliary agent lactic acid-chromium base bentonite clay material.
Comparative example 7
Identical with the process of embodiment 1, difference is, is added without potassium humate.
Comparative example 8
Identical with the process of embodiment 1, difference is, is added without alkaline reagent, and its pH is 7.
The drilling fluid prepared below to the present embodiment is carried out with sulfomethylated humic acid potassium graft polymers fluid loss additive
Performance evaluation, comprise the following steps that：
1st, fluid loss additive filtrate loss controllability evaluation result
Base slurry is prepared：About 10L running water is measured with graduated cylinder, and is heated to 60 DEG C, soil paste bentonite is removed into preparation
400g is slowly added into hot water, is stirred when adding native, the fully dispersed uniformly rear addition 20gNa of bentonite2CO3After stirring 30min
It is standby to conserve 24h.
Experiment slurry is prepared and test：Blank sample is used as using base slurry, be separately added into base is starched embodiment 1 ~ 9 and comparative example 1 ~
Addition fluid loss additive class sample is the 2% of base slurry weight during fluid loss additive sample is starched as test specimens, base in 6.
Filter loss is tested：Base is starched and tested to starch and determines API filtration, HTHP leak-off after heat rolling 16h at 200 DEG C
Amount（HTHP fluid loss measurement temperature is its heat rolling temperature）, test data is shown in Table 1.
Table 1 is filtration reduction evaluation result
As shown in Table 1, base slurry filter loss after 2% embodiment sample heat at 200 DEG C rolls 16h is added in base slurry to be had to some extent
Reduce, the API filtration of base slurry is generally down to 10.6 ~ 17.8ml from 25.5ml, and high temperature and high pre ssure filtration is down to from 73.0ml
20.3~28.4ml.Its excellent performance of synthesized fluid loss additive in particular embodiment 1, API filtration is down to 4.2ml, high temperature is high
Filter pressing loss is down to 10.5ml, it is seen that raw material produces with the performance for comparing sulfomethylated humic acid potassium graft polymers fluid loss additive
Tremendous influence, when raw material proportioning reaches best of breed in embodiment 1, filtrate reducing effect reaches best.Other comparative example 1 ~ 5 is said
The bentonitic addition of the bright initiation auxiliary agent lactic acid-chromium baseization and formula it is larger with fluid loss additive performance impact is compared.
Comparative example 7-8 illustrates that potassium humate and raw material ph regulation are also very big for product overall performance influence.
2nd, fluid loss additive temperature resistance evaluation result
Testing sample is prepared and test：Take 400ml clear water, add in embodiment 1 sample prepared, 200 DEG C, 220 DEG C, 240
Its rheological parameter is surveyed after heat rolling 16h at DEG C, it is the 2% of clear water weight to add fluid loss additive class sample.
Table 2 is heat rolling temperature to fluid loss additive aqueous solution rheology impact
As can be seen from Table 2, as heat rolls the rise of temperature, the solution viscosity of fluid loss additive declines with shear force.At 240 DEG C
After lower heat rolling, the AV and PV of the fluid loss additive aqueous solution decline by a big margin, but fluid loss additive is not degradable, and its aqueous solution is still
With certain viscosity, illustrate that the fluid loss additive temperature resistance is excellent, still there is certain temperature resistance at 240 DEG C.
3rd, fluid loss additive Assessment on Salt
Testing sample is prepared and test：Take 400ml drilling wells liquid-based to starch, add in 2% embodiment 1 the fluid loss additive sample prepared, it is high
After speed stirring is thoroughly dispersed in drilling fluid to fluid loss additive, a certain amount of salt is added, tests drilling fluid rheology and filter loss,
The salt of addition is the mass percent of drilling well liquid-based slurry.Test is reclaimed drilling fluid heat rolling 16h, test at 200 DEG C and bored after terminating
Rheological characteristic, API filtration and the high temperature and high pre ssure filtration of well liquid.
Table 3 is fluid loss additive salt-resistance（NaCl）Evaluation
Table 4 is fluid loss additive salt-resistance（CaCl2）Evaluation
From table 3, table 4, the 20%NaCl drilling wells liquid-based slurry API filtration for adding fluid loss additive in the present invention is only 6.8ml,
High temperature and high pre ssure filtration is 36.3ml, and add the present invention in fluid loss additive 1%CaCl2Drilling well liquid-based slurry API filtration is only
For 7.2ml, high temperature and high pre ssure filtration 35.6ml, illustrate that fluid loss additive has good salt-resistance in the present invention, be a kind of preferable
Salt resistance fluid loss additive.
Claims (9)
- A kind of 1. drilling fluid preparation method of sulfomethylated humic acid potassium graft polymers fluid loss additive, it is characterised in that this method Comprise the following steps:1）60 ~ 100 parts of deionized waters are added in the reactor equipped with 30 ~ 50 parts of potassium humates, after dissolving is stirred at room temperature, use alkali Property reagent regulation pH to 10 ~ 11, then add 6 ~ 10 parts by weight of formaldehyde, 6 ~ 10 parts by weight sulfonating agent sodium hydrogensulfites, stirring rise Temperature cools to 70 ~ 75 DEG C after reacting 3 ~ 4h；2）By 15 ~ 25 parts of acrylamides, 5 ~ 15 parts of alkyl acrylics, 10 ~ 20 parts of 2- acrylamide-2-methylpro panesulfonic acids, 5 ~ 15 parts of NVPs add step 1 after being dissolved in 70 ~ 150 parts of deionized waters）Middle reactor, 0.5h is stirred, simultaneously Add 0.13 ~ 0.25 part and trigger auxiliary agent lactic acid-chromium base bentonite clay material, heating, by 0.27 ~ 0.5 part of initiator（Persulfuric acid Sodium, sodium hydrogensulfite）Wiring solution-forming, slowly it is alternately added in reactor, time for adding 0.5h, 55 ~ 60 after being added dropwise DEG C insulation 4h, discharging, cooling obtain sulfomethylated humic acid potassium graft polymers fluid loss additive.
- A kind of 2. preparation side of drilling fluid sulfomethylated humic acid potassium graft polymers fluid loss additive according to claim 1 Method, it is characterised in that step 1）Neutral and alkali reagent is the one or more in sodium hydroxide, potassium hydroxide.
- A kind of 3. preparation side of drilling fluid sulfomethylated humic acid potassium graft polymers fluid loss additive according to claim 1 Method, it is characterised in that step 1）Middle potassium humate, formaldehyde, sodium hydrogensulfite, the mass ratio of deionized water are 5:1:1:2.
- A kind of 4. preparation side of drilling fluid sulfomethylated humic acid potassium graft polymers fluid loss additive according to claim 1 Method, it is characterised in that step 1）To step 2）Middle potassium humate, acrylamide, alkyl acrylic, 2- acrylamido -2- methyl Propane sulfonic acid, NVP mass ratio are 6:3:2:3:3~10:5:1:3:1.
- A kind of 5. preparation side of drilling fluid sulfomethylated humic acid potassium graft polymers fluid loss additive according to claim 1 Method, it is characterised in that step 2）Middle oxidation/reduction ratio of initiator n sodium peroxydisulfates：N sodium sulfite=1.3:1.
- A kind of 6. preparation side of drilling fluid sulfomethylated humic acid potassium graft polymers fluid loss additive according to claim 1 Method, it is characterised in that step 1）Middle mixing speed is 100 ~ 150r/min, step 2）Middle mixing speed is 300 ~ 400r/min.
- A kind of 7. preparation side of drilling fluid sulfomethylated humic acid potassium graft polymers fluid loss additive according to claim 1 Method, it is characterised in that step 1）To step 2）In reactor be ceramic electric heating reactor.
- A kind of 8. preparation side of drilling fluid sulfomethylated humic acid potassium graft polymers fluid loss additive according to claim 1 Method, it is characterised in that the polymer filtrate reducer is molecular weight 90 ~ 1,400,000 again.
- A kind of 9. preparation side of drilling fluid sulfomethylated humic acid potassium graft polymers fluid loss additive according to claim 1 Method, it is characterised in that the lactic acid-chromium base bentonite clay material preparation method is as follows：Step 1,7.08 parts of chromic nitrates, 18.91 parts of zinc nitrates, 7.35 parts of aluminum nitrates and 5.68 parts of ferric nitrates are dissolved in 100 parts of water In obtain mixing salt solution, 5.35 parts of sodium hydroxides and 2.84 parts of sodium carbonate are dissolved in 50 parts, are configured to mixed ammonium/alkali solutions, Mixed ammonium/alkali solutions are slowly dropped in the mixing salt solution being stirred vigorously, stop that mixed base is added dropwise after salt-mixture precipitates completely Solution, bottom sediment is taken to stir washing filtering after crystallization 24h, drying for standby at 70 DEG C；Step 2, excessive hydrochloric acid is evaporated after fully reacting 36 parts of neodymia and 4 parts of mixed in hydrochloric acid, add excessive water, add ammonia Water precipitates completely to rare earth, filtering, is washed to no chlorion, obtains neodymium hydroxide, neodymium hydroxide is mixed with excessive water, obtained Suspension, it is heated to adding lactic acid aqueous solution insulation reaction 5h after 60 DEG C while stirring, evaporation excessive water precipitation product, which is crossed, to be filtered dry It is dry to obtain lactic acid neodymium compound, 50 parts of sodium bentonites are added after lactic acid neodymium compound is mixed with product in step 1 and are pinched Conjunction obtains lactic acid-chromium base bentonite clay material.
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Cited By (5)
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| CN108822812A (en) * | 2018-07-25 | 2018-11-16 | 佛山陵朝新材料有限公司 | A kind of preparation method of salt tolerant high heat stability fluid loss additive |
| CN110564381A (en) * | 2019-09-28 | 2019-12-13 | 重庆威能钻井助剂有限公司 | Composite filtrate reducer for drilling fluid and preparation method thereof |
| CN110591667A (en) * | 2019-09-29 | 2019-12-20 | 重庆威能钻井助剂有限公司 | High-temperature-resistant fluid loss additive for drilling fluid and preparation method thereof |
| CN111139042A (en) * | 2018-11-02 | 2020-05-12 | 中国石油化工股份有限公司 | Resin modified polymer fluid loss agent based on degradation and preparation method thereof |
| CN111139039A (en) * | 2018-11-02 | 2020-05-12 | 中国石油化工股份有限公司 | Sulfonated phenolic resin graft modified polymer filtrate reducer and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108822812A (en) * | 2018-07-25 | 2018-11-16 | 佛山陵朝新材料有限公司 | A kind of preparation method of salt tolerant high heat stability fluid loss additive |
| CN111139042A (en) * | 2018-11-02 | 2020-05-12 | 中国石油化工股份有限公司 | Resin modified polymer fluid loss agent based on degradation and preparation method thereof |
| CN111139039A (en) * | 2018-11-02 | 2020-05-12 | 中国石油化工股份有限公司 | Sulfonated phenolic resin graft modified polymer filtrate reducer and preparation method thereof |
| CN111139039B (en) * | 2018-11-02 | 2022-06-10 | 中国石油化工股份有限公司 | Sulfonated phenolic resin graft modified polymer filtrate reducer and preparation method thereof |
| CN111139042B (en) * | 2018-11-02 | 2022-06-10 | 中国石油化工股份有限公司 | Resin modified polymer fluid loss agent based on degradation and preparation method thereof |
| CN110564381A (en) * | 2019-09-28 | 2019-12-13 | 重庆威能钻井助剂有限公司 | Composite filtrate reducer for drilling fluid and preparation method thereof |
| CN110564381B (en) * | 2019-09-28 | 2021-07-20 | 重庆威能钻井助剂有限公司 | Composite filtrate reducer for drilling fluid and preparation method thereof |
| CN110591667A (en) * | 2019-09-29 | 2019-12-20 | 重庆威能钻井助剂有限公司 | High-temperature-resistant fluid loss additive for drilling fluid and preparation method thereof |
| CN110591667B (en) * | 2019-09-29 | 2021-07-20 | 重庆威能钻井助剂有限公司 | High-temperature-resistant fluid loss additive for drilling fluid and preparation method thereof |
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