CN108822813A - A kind of organic lignite method of purification - Google Patents
A kind of organic lignite method of purification Download PDFInfo
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- CN108822813A CN108822813A CN201810895492.3A CN201810895492A CN108822813A CN 108822813 A CN108822813 A CN 108822813A CN 201810895492 A CN201810895492 A CN 201810895492A CN 108822813 A CN108822813 A CN 108822813A
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- lignite
- sodium humate
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- oil
- additive
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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
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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)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention provides a kind of organic lignite method of purification, includes the following steps：It produces the macromolecular lignite to obtain sodium humate as solution using water and is configured to mass concentration 10%-20% sodium humate aqueous solution；The additive that sodium humate quality is 3%-8% is added；Centrifugation slagging-off；It is filtered after adsorbent stirring is added, obtains the sodium humate of high-purity；Adjusting pH using acid solution is 1-3；Centrifugation obtains solid powder of the moisture content less than 8%, as organic lignite.The invention has the advantages and positive effects of：It creates through the invention and lignite is purified, obtained organic lignite can apply to the fluid loss additive of oil-base drilling fluid of various density, so that the fluid loss additive has good dispersibility in the oil, there is apparent filtrate reducing effect in oil-base mud, while having the function of to dilute viscosity reduction, co-emulsifier etc..
Description
Technical field
The invention is related to drilling technology field, is specifically related to a kind of organic lignite method of purification.
Background technique
In drilling process, due to the effect of pressure difference, the moisture in drilling fluid inevitably passes through borehole wall leak-off to ground
In layer, drilling fluid dehydration is caused.As moisture enters stratum, in drilling fluid, clay particle, which is just attached on the borehole wall, forms " filter
Cake " forms a filter cake borehole wall.During the formation of the filter cake borehole wall, the excess moisture of leak-off, filter cake is blocked up, fine clay
Grain, which enters stratum etc. with moisture, can all influence normal drilling well, and damage to stratum.
Filtrate reducer for drilling fluid is also known as fluid loss agent, is that the liquid phase filter loss or liquid phase for reducing drilling fluid are seeped to stratum
The additive of the loss amount of leakage.According to chemical composition classify, fluid loss additive can be divided into mineral substance, natural organic matter and its modified species
(such as lignite lye, pregelatinated or modified starch), synthesis of organic substance class (such as completing methylcellulose and polyacrylate).It is existing
Some filtrate reducer for drilling fluid are in following problems：1. temperature resistance ability is poor, and especially 200 degrees Celsius；2. anti-saturation salt outlet capacity is not
Row.
Organic lignite is a kind of lipophilic humic acid derivative, and resulting humic acid derivative is using further hot tearing
After solution processing, obtain temperature resistance ability up to 220 DEG C, the fluid loss additive of oil-base drilling fluid of various density can be applied to.Drop filter
Lose agent has good dispersibility in the oil, has apparent filtrate reducing effect in oil-base mud, while there is dilution to drop
The functions such as viscous, co-emulsifier.
Summary of the invention
The problem to be solved by the invention is to provide a kind of organic lignite methods of purification, can apply to various density
Fluid loss additive of oil-base drilling fluid.
In order to solve the above technical problems, the invention the technical solution adopted is that：A kind of organic lignite method of purification, packet
Include following steps：
1) it, produces the macromolecular lignite to obtain sodium humate as solution using water and is configured to mass concentration 10%-20% humic
Acid sodium aqueous solution；
2) additive that sodium humate quality is 3%-8%, is added；
3), centrifugation slagging-off；
4) it is filtered after adsorbent stirring, is added, obtains the sodium humate of high-purity；
5), adjusting pH using acid solution is 1-3；
6), centrifugation obtains solid powder of the moisture content less than 8%, as organic lignite.
Further, the additive is one of polyacrylamide, hydroxymethyl cellulose or a variety of.
Further, the acid solution is hydrochloric acid solution.
Further, the adsorbent is active carbon.
Further, step 4 further includes micro-pore-film filtration.
Further, pH is preferably 2 in step 5.
The invention has the advantages and positive effects of：It creates through the invention and lignite is purified, obtain
Organic lignite can apply to the fluid loss additive of oil-base drilling fluid of various density, so that the fluid loss additive has well in the oil
Dispersibility, there is apparent filtrate reducing effect in oil-base mud, while having the function of to dilute viscosity reduction, co-emulsifier etc..
Specific embodiment
Detailed description of specific embodiments of the invention is provided below.
The invention the technical solution adopted is that：A kind of organic lignite method of purification, includes the following steps：
1) it, produces the macromolecular lignite to obtain sodium humate as solution using water and is configured to mass concentration 10%-20% humic
Acid sodium aqueous solution；2) additive that sodium humate quality is 3%-8%, is added, it is described in one embodiment of the invention
Additive is one of polyacrylamide, hydroxymethyl cellulose or a variety of；3), centrifugation slagging-off, the number of centrifugation is according to centrifugation
Engine efficiency is determined；4) it is filtered after adsorbent stirring, is added, obtains the sodium humate of high-purity, an implementation of the invention
In example, the adsorbent is active carbon, can also reuse micro-pore-film filtration according to adsorption effect；5), using acid solution tune
Section pH is 1-3, and the quality that acid solution is added is about the 5-10% of sodium humate content in step 1, and pH is preferably 2, this hair
In one embodiment of bright creation, the acid solution is hydrochloric acid solution；6) it, is centrifuged, is further rinsed with tap water when necessary
Removal impurity after be centrifuged, obtain solid powder of the moisture content less than 8%, if moisture content it is exceeded can to solid powder into
Row drying, as organic lignite.Acidic aqueous solution after centrifugation recycles, periodically adds alkali slagging-off.
To the appearance of obtained organic lignite, moisture, maximum specific weight, water solubility, partial size, ignition residue, mud property etc.
Index is detected, and testing result is as shown in the table, and testing result meets index request.
The invention has the advantages and positive effects of：It creates through the invention and lignite is purified, obtain
Organic lignite can apply to the fluid loss additive of oil-base drilling fluid of various density, so that the fluid loss additive has well in the oil
Dispersibility, there is apparent filtrate reducing effect in oil-base mud, while having the function of to dilute viscosity reduction, co-emulsifier etc..
The embodiment of the invention is described in detail above, but the content is only the preferable of the invention
Embodiment should not be considered as limiting the scope of the invention.It is all according to equivalent change made by the invention range with
Improve etc., it shall still fall within the scope of this patent.
Claims (6)
1. a kind of organic lignite method of purification, it is characterised in that：Include the following steps：
1) it, produces the macromolecular lignite to obtain sodium humate as solution using water and is configured to mass concentration 10%-20% sodium humate
Aqueous solution；
2) additive that sodium humate quality is 3%-8%, is added；
3), centrifugation slagging-off；
4) it is filtered after adsorbent stirring, is added, obtains the sodium humate of high-purity；
5), adjusting pH using acid solution is 1-3；
6), centrifugation obtains solid powder of the moisture content less than 8%, as organic lignite.
2. a kind of organic lignite method of purification according to claim 1, it is characterised in that：The additive is polyacrylamide
One of amine, hydroxymethyl cellulose are a variety of.
3. a kind of organic lignite method of purification according to claim 1, it is characterised in that：The acid solution is that hydrochloric acid is molten
Liquid.
4. a kind of organic lignite method of purification according to claim 1, it is characterised in that：The adsorbent is active carbon.
5. a kind of organic lignite method of purification according to claim 1, it is characterised in that：Step 4 further includes microporous barrier mistake
Filter.
6. a kind of organic lignite method of purification according to claim 1, it is characterised in that：PH is preferably 2 in step 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810895492.3A CN108822813A (en) | 2018-08-08 | 2018-08-08 | A kind of organic lignite method of purification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810895492.3A CN108822813A (en) | 2018-08-08 | 2018-08-08 | A kind of organic lignite method of purification |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108822813A true CN108822813A (en) | 2018-11-16 |
Family
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| CN201810895492.3A Pending CN108822813A (en) | 2018-08-08 | 2018-08-08 | A kind of organic lignite method of purification |
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Citations (9)
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|---|---|---|---|---|
| CN1242407A (en) * | 1999-06-03 | 2000-01-26 | 中国科学院山西煤炭化学研究所 | Lignite resin type high temp. salt resistant filter loss reduction agent and method for prep. same |
| WO2000016877A1 (en) * | 1998-09-18 | 2000-03-30 | Oeste Franz D | Fibrous formation containing active substances, a method for the production thereof, and use of the same |
| CN1807543A (en) * | 2005-12-22 | 2006-07-26 | 新疆三精德润科技有限公司 | Fluid loss additive for boring fluid |
| CN101544804A (en) * | 2009-04-29 | 2009-09-30 | 山东普金肥料有限公司 | Degradable liquid agricultural mulching film |
| CN101851491A (en) * | 2009-10-20 | 2010-10-06 | 新疆德蓝股份有限公司 | Method for preparing fluid loss additive for drilling fluid |
| WO2015076371A1 (en) * | 2013-11-25 | 2015-05-28 | 株式会社クラレ | Hydrophilic polymeric adsorbent and water treatment method employing same |
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| CN106324183A (en) * | 2015-07-08 | 2017-01-11 | 哈尔滨工业大学 | Soil humus extraction and purification method |
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|---|---|---|---|---|
| WO2000016877A1 (en) * | 1998-09-18 | 2000-03-30 | Oeste Franz D | Fibrous formation containing active substances, a method for the production thereof, and use of the same |
| CN1242407A (en) * | 1999-06-03 | 2000-01-26 | 中国科学院山西煤炭化学研究所 | Lignite resin type high temp. salt resistant filter loss reduction agent and method for prep. same |
| CN1807543A (en) * | 2005-12-22 | 2006-07-26 | 新疆三精德润科技有限公司 | Fluid loss additive for boring fluid |
| CN101544804A (en) * | 2009-04-29 | 2009-09-30 | 山东普金肥料有限公司 | Degradable liquid agricultural mulching film |
| CN101851491A (en) * | 2009-10-20 | 2010-10-06 | 新疆德蓝股份有限公司 | Method for preparing fluid loss additive for drilling fluid |
| WO2015076371A1 (en) * | 2013-11-25 | 2015-05-28 | 株式会社クラレ | Hydrophilic polymeric adsorbent and water treatment method employing same |
| CN106324183A (en) * | 2015-07-08 | 2017-01-11 | 哈尔滨工业大学 | Soil humus extraction and purification method |
| CN105733526A (en) * | 2016-04-19 | 2016-07-06 | 潍坊天福化学科技有限公司 | Drilling fluid filtrate reducer and preparation method thereof |
| CN108018028A (en) * | 2017-12-14 | 2018-05-11 | 玉门油田科达化学有限责任公司 | A kind of drilling fluid walchowite and its production technology |
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