CN1414059A - Preparation method of tala well drilling liquid viscosity lowering agent - Google Patents
Preparation method of tala well drilling liquid viscosity lowering agent Download PDFInfo
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- CN1414059A CN1414059A CN 02133632 CN02133632A CN1414059A CN 1414059 A CN1414059 A CN 1414059A CN 02133632 CN02133632 CN 02133632 CN 02133632 A CN02133632 A CN 02133632A CN 1414059 A CN1414059 A CN 1414059A
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Abstract
A pour inhibitor (diluent) for drilling liquid is prepared from Tala bean pod powder through extracting in water or alkali solution, adding the polymer containing sulfo, caboxy, amido and ester groups, and mixing. Its advantages are high effect, high resistance to high temp. and salt, and high P/C ratio.
Description
The invention belongs to the preparation method of petroleum drilling fluid viscosity-depression agent (thinner).
In the process of drilling well, drilling fluid plays important effect, is to realize modern probing irreplaceable drilling well " blood ".It has the bottom-hole cleaning, cutting carring; Lubricated, cooling bit drilling tool; Stabilizing borehole, the protection payzone; Equilibrium strata pressure prevents down-hole accident; Transferring power, effects such as performance waterpower usefulness.Therefore, the quality of drilling fluid directly has influence on the speed of drilling well and the quality of drilling well.Drilling fluid is along with its character such as rising of the creeping into of drill bit, the physicochemical property of selected rock stratum, phreatic composition and subsurface temperature can change, the viscosity of drilling fluid becomes big under normal conditions, shear force raises, the rheological deterioration, thereby influence drilling speed and quality, thereby to dilute drilling fluid with viscosity-depression agent, to reduce its viscosity and shear force, keep good rheological.At present, viscosity-depression agent mainly contains four classes: 1. based on the viscosity-depression agent of natural matters such as xylogen, tannin extract, tannin, and 2. polymer viscosity reducer, 3. inorganic viscosity-depression agent, 4. positive colloid drilling fluid thinner.Wherein xylogen chromium-iron lignosulfonate (FCLS), sulfonation tannin extract (SMT), sulfonation tannin (SMK), Chrome-free thinner (LGV) etc. are comparatively commonly used, but all there is certain problem in these viscosity-depression agents, for example, xylogen chromium-iron lignosulfonate (FCLS) contains the toxic metal ion, sulfonation tannin extract (SMT), sulfonation tannin (SMK) and Chrome-free thinner (LGV) non-refractory, dilution effect is relatively poor.On the method for preparation, great majority are that the purpose that reaches temperature resistance all adopts earlier sulfonation or sulfomethylation based on the viscosity-depression agents of natural matter, again with the approach of heavy metal complexing, therefore, in preparation and the process used, have formaldehyde pollution and heavy metallic poison.
The objective of the invention is to seek a kind of method for preparing drilling fluid thinner, overcoming the deficiencies in the prior art, and reach and use preferably and environment protecting.
China has introduced a fine variety from South America since tower draws from the beginning of the nineties, plants experimentally popularization on the Changjiang river middle and upper reaches, river, Yunnan-Guizhou and other places, for positive contribution has been made in the ecological environmental protection of locality.Tower ripe, that output is higher drew beanpod high temperature resistant talas of tannic acid drilling fluid thinner provided abundant raw material for we research and develop one years 2～3.
Technical scheme of the present invention is as follows: at first tower being drawn beanpod powder and water or alkali lye is that the mixed of 1: 3～10 (weight ratios) feeds intake by the powder liquor ratio, stir temperature rising reflux, temperature range is 20-100 ℃, extraction time is 0.5-8 hour, washing after filtration,, concentrating filter liquor obtains aqueous extract, or again drying, pulverize powdered extract.Secondly with said extracted thing and the polymkeric substance that contains groups such as sulfonic group, carboxylic acid group, amide group, ester group by 5～20: the mixed of 1 (weight ratio), make drilling fluid thinner.
The used alkali of the present invention is generally NaOH or KOH, and its consumption is 5～20% (weight percents) that tower draws the beanpod powder, and best consumption is 8～15%.Tower draws the best powder liquor ratio 1: 5～8 (weight ratio) of beanpod powder and water or alkali lye, and the most suitable extraction temperature is 50-80 ℃, and the most suitable extraction time is 1-3 hour.The best blending ratio of extract (by powdery) and polymkeric substance is 8～15: 1, usually polymkeric substance is meant the polymkeric substance of groups such as containing sulfonic group, carboxylic acid group, amide group, ester group, as acrylamide-methacrylic acid potassium multipolymer, acrylamide-copolymer-maleic anhydride, acrylamide and acrylic acid copolymer, acrylamide-maleic anhydride-methylmethacrylate copolymer, acrylamide-sodium allyl sulfonate multipolymer etc.
Indication extract of the present invention, it mainly is extracted into and is divided into talas of tannic acid.
Compared with the prior art the present invention has the following characteristics: the one, and drawing the beanpod powder with tower is raw material, the source is abundant; The 2nd, without process for sulfonation, with the heavy metal complexing, technology is not simple, no matter be in the product manufacturing therefore, still can not cause damage to environment in the use of product; The 3rd, product Applicable temperature scope is wide, can use other tannins viscosity-depression agent non-refractory, SMT etc. for example, low temperature drilling fluid (≤120 ℃) in only being applicable in 20-200 ℃ of drilling fluid; The 4th, efficient, its viscosity break ratio is all more than 90% generally speaking, and other tannins viscosity-depression agent viscosity reducing effect is relatively poor; The 5th, have certain salt resistance, its viscosity reducing effect does not have considerable change in 2% NaCl solution and under the high temperature.The 6th, the cost performance height, because production technique is simple relatively, cost is lower.
Embodiment 1
The tower that drops into 150kg draws the beanpod powder, adds water 1500kg, refluxes 5 hours at 60 ℃, filters, and filter residue merges filtrate with an amount of water washing 2 times, concentrate liquid extract, or oven dry (≤110 ℃) again is ground into powder, gets brown talas of tannic acid powder.Productive rate is for dropping into the 50-65% of powder.Embodiment 2
The tower that drops into 150kg draws the beanpod powder, adds water 1500kg, adds NaOH20kg, refluxes 1.5 hours at 60 ℃, filter, filter residue merges filtrate with an amount of water washing 2 times, concentrated liquid extract, or oven dry (≤110 ℃) again, be ground into powder, get brown talas of tannic acid powder.Productive rate is for dropping into the 60-80% of powder.
Embodiment 3
The tower that drops into 150kg draws the beanpod powder, adds water 1200kg, adds NaOH20kg, refluxes 1 hour at 80 ℃, filter, filter residue merges filtrate with an amount of water washing 2 times, concentrated liquid extract, or oven dry (≤110 ℃) again, be ground into powder, get brown talas of tannic acid powder.Productive rate is for dropping into the 60-75% of powder.
Embodiment 4
The tower that drops into 150kg draws the beanpod powder, adds water 800kg, adds KOH18kg, refluxes 1 hour at 100 ℃, filter, filter residue merges filtrate with an amount of water washing 3 times, concentrated liquid extract, or oven dry (≤110 ℃) again, be ground into powder, get brown talas of tannic acid powder.Productive rate is for dropping into the 60-75% of powder.
Embodiment 5
Drop into 500kg talas of tannic acid extracting solution (talas of tannic acid content is 60%) in mixing machine, 50kg acrylamide-methacrylic acid potassium multipolymer mixes.
Embodiment 6
Drop into 500kg talas of tannic acid extracting solution (talas of tannic acid content is 60%) in mixing machine, the 30kg acrylamide and acrylic acid copolymer mixes.Embodiment 7
Drop into 150kg talas of tannic acid powder in the exsiccant mixing machine, 16kg acrylamide-copolymer-maleic anhydride stirs.
Claims (8)
1, the preparation method of tala well drilling liquid viscosity lowering agent, it is characterized in that it is that the mixed of 1: 3～10 (weight ratios) feeds intake by the powder liquor ratio that tower is drawn beanpod powder and water or alkali lye, stir temperature rising reflux, temperature range is 20-100 ℃, extraction time is 0.5-8 hour, washing after filtration,, concentrating filter liquor obtains aqueous extract, or again drying, pulverize powdered extract, then with extract and the polymkeric substance that contains groups such as sulfonic group, carboxylic acid group, amide group, ester group by 5～20: the mixed of 1 (weight ratio), make drilling fluid thinner.
2, by the described method of claim 1, it is characterized in that alkali is NaOH or KOH, its add-on is the 5-20% (weight percent) that tower draws the beanpod powder.
3, by the described method of claim 1, it is characterized in that said polymkeric substance is acrylamide-methacrylic acid potassium multipolymer, or acrylamide-copolymer-maleic anhydride, or acrylamide and acrylic acid copolymer.
4, by the described method of claim 1, it is characterized in that the powder liquor ratio is 1: 5～8 (weight ratios).
5, by the described method of claim 1, it is characterized in that extracting temperature is 50-80 ℃.
6, by the described method of claim 1, it is characterized in that extraction time is 1-3 hour.
7, by the described method of claim 1, the proportional range that it is characterized in that extract and polymkeric substance is 8～15: 1 (weight ratio).
8, by claim 1,2 described methods is characterized in that the alkali consumption is the 8-15% (weight percent) that tower draws the beanpod powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02133632 CN1257248C (en) | 2002-08-21 | 2002-08-21 | Preparation method of tala well drilling liquid viscosity lowering agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02133632 CN1257248C (en) | 2002-08-21 | 2002-08-21 | Preparation method of tala well drilling liquid viscosity lowering agent |
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| Publication Number | Publication Date |
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| CN1414059A true CN1414059A (en) | 2003-04-30 |
| CN1257248C CN1257248C (en) | 2006-05-24 |
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| CN 02133632 Expired - Fee Related CN1257248C (en) | 2002-08-21 | 2002-08-21 | Preparation method of tala well drilling liquid viscosity lowering agent |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101967372A (en) * | 2010-08-31 | 2011-02-09 | 武汉恩泰科技有限公司 | Water-based well drilling viscosity reducer and synthesis method thereof |
| CN104130756A (en) * | 2014-07-01 | 2014-11-05 | 青岛蓬勃石油技术服务有限公司 | High-temperature-resistant viscosity reducer for viscous oil and preparation method thereof |
| CN104152122A (en) * | 2014-07-17 | 2014-11-19 | 中国石油天然气集团公司 | Viscosity reducer for oil-based drilling fluid and preparation method thereof |
| CN106146738A (en) * | 2016-06-29 | 2016-11-23 | 郭舒洋 | A kind of method that acer ginnala leaf resource prepares weatherability heavy crude thinner |
| CN104152122B (en) * | 2014-07-17 | 2017-01-04 | 中国石油天然气集团公司 | A kind of oil base drilling fluid thinner and preparation method thereof |
-
2002
- 2002-08-21 CN CN 02133632 patent/CN1257248C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101967372A (en) * | 2010-08-31 | 2011-02-09 | 武汉恩泰科技有限公司 | Water-based well drilling viscosity reducer and synthesis method thereof |
| CN101967372B (en) * | 2010-08-31 | 2014-01-01 | 武汉恩泰科技有限公司 | Water-based well drilling viscosity reducer and synthesis method thereof |
| CN104130756A (en) * | 2014-07-01 | 2014-11-05 | 青岛蓬勃石油技术服务有限公司 | High-temperature-resistant viscosity reducer for viscous oil and preparation method thereof |
| CN104152122A (en) * | 2014-07-17 | 2014-11-19 | 中国石油天然气集团公司 | Viscosity reducer for oil-based drilling fluid and preparation method thereof |
| CN104152122B (en) * | 2014-07-17 | 2017-01-04 | 中国石油天然气集团公司 | A kind of oil base drilling fluid thinner and preparation method thereof |
| CN106146738A (en) * | 2016-06-29 | 2016-11-23 | 郭舒洋 | A kind of method that acer ginnala leaf resource prepares weatherability heavy crude thinner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1257248C (en) | 2006-05-24 |
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Granted publication date: 20060524 |