CN102775969A - Multifunctional filtrate reducer and preparation method thereof - Google Patents
Multifunctional filtrate reducer and preparation method thereof Download PDFInfo
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- CN102775969A CN102775969A CN2012102565553A CN201210256555A CN102775969A CN 102775969 A CN102775969 A CN 102775969A CN 2012102565553 A CN2012102565553 A CN 2012102565553A CN 201210256555 A CN201210256555 A CN 201210256555A CN 102775969 A CN102775969 A CN 102775969A
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Abstract
The invention discloses a multifunctional filtrate reducer, which comprises 20-60 parts by weight of modified starch, 10-30 parts by weight of polyalcohol polyol, 30-70 parts by weight of polyacrylate and 0.05-1.0 part by weight of quaternary ammonium salt cationic surfactant. The invention further discloses a preparation method of the multifunctional filtrate reducer. The multifunctional filtrate reducer, provided by the invention, has the characteristics of good filtrate reduction effect and compatibility, low price, temperature resistance, salt resistance, collapse prevention and lubrication. The method, provided by the invention, has the advantages of simple production process, moderate conditions, high conversion rate, low cost, no after treatment and no three wastes, so that the method is green and environment-friendly.
Description
Technical field
The invention belongs to the fluid loss additive for boring fluid technical field, be specifically related to a kind of multi-functional fluid loss agent and preparation method thereof.
Background technology
In drilling process, often run into big section salt rock stratum, be owing to there is a large amount of NaCl to be dissolved in the drilling fluid, the viscosity of drilling fluid, shear force are raise, filter loss increases severely, and makes the well borer do to be difficult to continue.Fluid loss agent is called filtration control agent, water retaining again.Fluid loss agent requires it in containing salt, calcium environment as a kind of additive for drilling fluid, still can keep the good filtration capacity that falls.The purpose that adds fluid loss agent will reduce the filter loss of drilling fluid through on the borehole wall, forming low permeability, pliable and tough, thin and fine and close filter cake exactly as far as possible.
Fluid loss agent is an important dose of kind of additive for drilling fluid, mainly is divided into cellulose family, humic-acid kind, acrylic acid or the like, starch based and resene etc. according to its source.On market, salt resistant filter loss reduction agent is main with organic polymer mostly, adds some mineral compound, auxiliary polyalcohol etc.; Its cost of material is higher, and synthesis technique is complicated and not too perfect, and reaction conditions is strict; The aftertreatment cost is high, and the product price ratio is lower, is difficult to apply.
Along with the development of present well drilling industry, the problem that runs in the drilling engineering is more and more.Drilling operation requires increasingly highly to additive for drilling fluid, and along with the expansion in exploratory development field, increasingly sophisticatedization of drilling technique is simultaneously because environmental regulation requires the demands for higher performance of factor such as strictness day by day to drilling fluid.Current, how to effectively prevent the research emphasis that Study on Technology such as hydration and expansion of clay, stabilizing borehole and protection hydrocarbon zone become people just day by day.Therefore, in order to take into account the requirement of aspects such as prospect pit, recovery well and environment protection, exploitation excellent performance and the environmental regulation that satisfies increasingly stringent require and have good compatibleness and salable multifunctional drilling fluid additive has bright prospects.
Summary of the invention
To the defective that exists in the prior art, an object of the present invention is to provide and a kind ofly can take into account price and well fall the multi-functional fluid loss agent of filtration effect and compatibleness, and this fluid loss agent tool temperature resistance, anti-salt, characteristics such as anti-collapse, lubricated.
Another object of the present invention provides the preparation method of above-mentioned multi-functional fluid loss agent, and this method production technique is simple, mild condition, and transformation efficiency is high, and cost is low, and environmental protection.
For reaching above purpose, the technical scheme that the present invention adopts is: a kind of multi-functional fluid loss agent comprises the raw material of following weight part:
Further, raw material and parts by weight are:
Further, said treated starch is selected from one or more in pre-gelatinized starch, CMS and the anti-temperature starch.
Further again, said treated starch is made up of the CMS of 30～60wt% pre-gelatinized starch, 10～40wt% and the anti-temperature starch of 10～50wt%.
Further, said polymeric alcohol is polyoxyethylene glycol or W 166, is used to regulate the inhibition of product, plays the effect of anti-collapse, the lubricated borehole wall.Polymeric alcohol is preferably polyoxyethylene glycol.
Further, said polyacrylate is ZX-I and/or polyacrylic acid potassium.
Further, said quaternary ammonium salt cationic surfactant is dodecyl benzyl dimethyl ammonium chloride, DTAC or palmityl trimethyl ammonium chloride.
The preparation method of above-mentioned multi-functional fluid loss agent disclosed by the invention may further comprise the steps:
(1) takes by weighing the raw material of required parts by weight;
(2) quaternary ammonium salt cationic surfactant is mixed with the solution of 5～20wt% with aqueous solvent;
(3) treated starch, polyacrylate are joined in the reactor drum; Under whipped state, water spray makes the wetting dispersion of material, slowly adds polymeric alcohol; Stir 5～15min, make mixing of materials even, then; The quaternary ammonium salt cationic surfactant solution that step (2) is made joins in the reactor drum equably; Be warming up between 50～80 ℃, stirring reaction 1～2h gets reaction product;
(4) reaction product of step (3) is dry, pulverize, promptly get product.
Further, in the step (3), when all raw materials adding reactor drums were reacted, moisture content was 15～25wt% in the reaction system; Reactor drum adopts the circulator bath heating; Temperature remains between 50～65 ℃ in the reactor drum; Reaction times is 1.5～2h.
Further, in the step (4), with fluidized-bed reaction product is carried out drying, making the product water ratio is 8～15wt%; With kibbler dried reaction product is pulverized, particle is crossed 60 mesh sieves, and undersized particle is the finished product, and particle diameter is less than 60 orders.
Beneficial effect of the present invention is following:
1) multi-functional anti-salt anti-collapse and anti-falling filtration agent provided by the invention, it is good to fall filtration effect, and anti-calcium and anti-salt can be used in the calcium ion mud; Good dispersivity, compatibleness is good, also has to suppress shale, effect such as anti-collapse, lubricated, helps the carrying out of drilling operation.
2) multi-functional anti-salt anti-collapse and anti-falling filtration agent provided by the invention is nontoxic, and environmentally safe belongs to environmentally friendly machine.
3) method provided by the invention, its production technique is simple, mild condition, transformation efficiency is high, and cost is low, no aftertreatment, the no three wastes, thereby environmental protection.
Embodiment
Below in conjunction with embodiment the present invention is further described.
Among the embodiment, 1 weight part is represented 1g.Wt% representes weight percent.
Employed medicine and reagent all can be buied from market among the embodiment.
Embodiment 1
Each amounts of components is as shown in table 1 in the raw material.
The preparation method is following:
Take by weighing various raw materials by consumption shown in the following table 1, pre-gelatinized starch, CMS and anti-temperature starch are mixed, all use as treated starch; The tensio-active agent dodecyl benzyl dimethyl ammonium chloride is mixed with the aqueous solution of 10wt%; Treated starch, ZX-I are joined in the reactor drum, under whipped state, spray into an amount of water; The wetting dispersion of material is got final product; Slowly add polyoxyethylene glycol, stir about 10min makes mixing of materials even; Then the dodecyl benzyl dimethyl ammonium chloride aqueous solution is joined in the reactor drum equably, the reaction system moisture content is 20wt%; Reactor drum heats with recirculated water, is warming up to 55 ℃, and stirring reaction 2h gets reaction product; The gained reaction product is dried to water ratio in fluidized-bed be 13wt%, pulverizes then, and particle is crossed 60 mesh sieves, and undersized particle is product of the present invention.
Embodiment 2
By the method for specified each amounts of components repetition embodiment 1 in the following table 1, different is: replace polyoxyethylene glycol with W 166, replace dodecyl benzyl dimethyl ammonium chloride with DTAC; The concentration of DTAC solution is 20wt%; The reaction system moisture content is 23wt%; Temperature of reactor remains on 50 ℃, reaction 2h.
Embodiment 3
By the method for specified each amounts of components repetition embodiment 1 in the following table 1, different is: replace ZX-I with polyacrylic acid potassium, replace dodecyl benzyl dimethyl ammonium chloride with palmityl trimethyl ammonium chloride; The concentration of palmityl trimethyl ammonium chloride solution is 15wt%; The reaction system moisture content is 15wt%; Temperature of reactor remains on 60 ℃, reaction 1.5h.
Embodiment 4
By the method for specified each amounts of components repetition embodiment 1 in the following table 1, different is: replace dodecyl benzyl dimethyl ammonium chloride with palmityl trimethyl ammonium chloride; Temperature of reactor remains on 70 ℃, reaction 1h.
Embodiment 5
By the method for specified each amounts of components repetition embodiment 1 in the following table 1, different is: replace ZX-I with polyacrylic acid potassium; Temperature of reactor remains on 80 ℃, reaction 1h.
Embodiment 6
By the method for specified each amounts of components repetition embodiment 1 in the following table 1, different is: treated starch is selected pre-gelatinized starch for use.
Embodiment 7
By the method for specified each amounts of components repetition embodiment 1 in the following table 1, different is: treated starch is selected the mixture of pre-gelatinized starch and CMS for use, and the two weight ratio is 1:1.
Embodiment 8
By the method for specified each amounts of components repetition embodiment 1 in the following table 1, different is: treated starch is selected anti-temperature starch for use.
Table 1
The Performance Detection test
This test determination the performance situation after normal temperature and pressure and elevated temperature heat are rolled after not adding multi-functional fluid loss agent in the seawater base slurry and adding the embodiment of the invention 1 prepared fluid loss agent.
Base slurry source: the seawater that fetch in the well site disperses mud
Test 1: under the condition of 25 ℃ of room temperatures, measured relative expansion rate, AV (AV), filter loss (FL) and the pH value of base slurry when not adding fluid loss agent, the result is as shown in table 2.
Table 2
| Project | The relative expansion rate | AV，mpa.s | FL，ml | pH |
| Index | 2.5 | 32.0 | 55 | 7.5 |
Test 2: under the condition of 25 ℃ of room temperatures, 690kpa, measured the base that adds 1.5wt% embodiment 1 prepared fluid loss agent and starched through relative expansion rate, AV, FL and pH value behind the normal temperature maintenance 24h, the result is as shown in table 3.
Table 3
| Project | The relative expansion rate | AV，mpa.s | FL，ml | pH |
| Index | 1.6 | 12 | 10.6 | 8.0 |
Test 3: under the condition of 25 ℃ of room temperatures, 690kpa, measured AV, filter loss FL and the pH value of base slurry after 120 ℃ of heat are rolled 16h that adds 1.5wt% embodiment 1 prepared fluid loss agent, the result is as shown in table 4.
Table 4
| Project | AV，mpa.s | FL，ml | pH |
| Index | 15 | 13 | 8.0 |
From the result of table 2-4, fluid loss agent provided by the invention all can reduce the AV and the filter loss of base slurry under normal temperature and hot conditions, explains that product provided by the invention has temperature resistance and filtrate-loss control ability preferably; From the relative expansion rate of product, product of the present invention has the performance that suppresses mud shale expansion, can prevent slump in.
Through each item test, each item performance of the embodiment of the invention 1 prepared fluid loss agent is as shown in table 5.
Table 5
The foregoing description just illustrates of the present invention, and the present invention also can implement with other ad hoc fashion or other particular form, and does not depart from main idea of the present invention or essential characteristic.Therefore, the embodiment of description all should be regarded as illustrative from any aspect but not be determinate.Scope of the present invention should be by additional claim explanation, and any intention and equivalent variation of scope with claim also should be within the scope of the present invention.
Claims (10)
1. a multi-functional fluid loss agent is characterized in that, comprises the raw material of following weight part:
2. a kind of multi-functional fluid loss agent according to claim 1 is characterized in that raw material and parts by weight are:
3. a kind of multi-functional fluid loss agent according to claim 1 and 2 is characterized in that said treated starch is selected from one or more in pre-gelatinized starch, CMS and the anti-temperature starch.
4. a kind of multi-functional fluid loss agent according to claim 3 is characterized in that said treated starch is made up of the CMS of 30～60wt% pre-gelatinized starch, 10～40wt% and the anti-temperature starch of 10～50wt%.
5. a kind of multi-functional fluid loss agent according to claim 1 and 2 is characterized in that said polymeric alcohol is polyoxyethylene glycol or W 166.
6. a kind of multi-functional fluid loss agent according to claim 1 and 2 is characterized in that said polyacrylate is ZX-I and/or polyacrylic acid potassium.
7. a kind of multi-functional fluid loss agent according to claim 1 and 2 is characterized in that said quaternary ammonium salt cationic surfactant is dodecyl benzyl dimethyl ammonium chloride, DTAC or palmityl trimethyl ammonium chloride.
8. the preparation method of the arbitrary described a kind of multi-functional fluid loss agent of claim 1-7 may further comprise the steps:
(1) takes by weighing the raw material of required parts by weight;
(2) quaternary ammonium salt cationic surfactant is mixed with the solution of 5～20wt% with aqueous solvent;
(3) treated starch, polyacrylate are joined in the reactor drum; Under whipped state, water spray makes the wetting dispersion of material, slowly adds polymeric alcohol; Stir 5～15min, make mixing of materials even, then; The quaternary ammonium salt cationic surfactant solution that step (2) is made joins in the reactor drum equably; Be warming up between 50～80 ℃, stirring reaction 1～2h gets reaction product;
(4) reaction product of step (3) is dry, pulverize, promptly get product.
9. the preparation method of a kind of multi-functional fluid loss agent according to claim 8 is characterized in that, in the step (3), when all raw materials adding reactor drums were reacted, moisture content was 15～25wt% in the reaction system; Reactor drum adopts the circulator bath heating; Temperature remains between 50～65 ℃ in the reactor drum; Reaction times is 1.5～2h.
10. the preparation method of a kind of multi-functional fluid loss agent according to claim 8 is characterized in that, in the step (4), with fluidized-bed reaction product is carried out drying, and making the product water ratio is 8～15wt%; With kibbler dried reaction product is pulverized, particle diameter is less than 60 orders.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104910330A (en) * | 2015-06-16 | 2015-09-16 | 北京中科天启油气技术有限公司 | High-density fluid loss additive for drilling fluids and preparation method thereof |
| CN105176500A (en) * | 2015-09-10 | 2015-12-23 | 安徽陆海石油助剂科技有限公司 | Saturated salt filtrate reducer polymer for drilling fluid |
| CN109181658A (en) * | 2018-08-22 | 2019-01-11 | 石家庄华莱鼎盛科技有限公司 | Fluid loss additive for boring fluid acrylamide/acrylic acid copolymer and preparation method thereof |
| CN111057526A (en) * | 2018-10-17 | 2020-04-24 | 中国石油化工股份有限公司 | Environment-friendly anti-sloughing drilling fluid and preparation method thereof |
| CN116120903A (en) * | 2022-11-24 | 2023-05-16 | 中建西部建设股份有限公司 | Bio-based polymer and preparation method and application thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104910330A (en) * | 2015-06-16 | 2015-09-16 | 北京中科天启油气技术有限公司 | High-density fluid loss additive for drilling fluids and preparation method thereof |
| CN105176500A (en) * | 2015-09-10 | 2015-12-23 | 安徽陆海石油助剂科技有限公司 | Saturated salt filtrate reducer polymer for drilling fluid |
| CN109181658A (en) * | 2018-08-22 | 2019-01-11 | 石家庄华莱鼎盛科技有限公司 | Fluid loss additive for boring fluid acrylamide/acrylic acid copolymer and preparation method thereof |
| CN111057526A (en) * | 2018-10-17 | 2020-04-24 | 中国石油化工股份有限公司 | Environment-friendly anti-sloughing drilling fluid and preparation method thereof |
| CN111057526B (en) * | 2018-10-17 | 2022-03-08 | 中国石油化工股份有限公司 | Environment-friendly anti-sloughing drilling fluid and preparation method thereof |
| CN116120903A (en) * | 2022-11-24 | 2023-05-16 | 中建西部建设股份有限公司 | Bio-based polymer and preparation method and application thereof |
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