CN1031408C - Preparation method of nontoxic drilling mud viscosity reducer - Google Patents
Preparation method of nontoxic drilling mud viscosity reducer Download PDFInfo
- Publication number
- CN1031408C CN1031408C CN 90105192 CN90105192A CN1031408C CN 1031408 C CN1031408 C CN 1031408C CN 90105192 CN90105192 CN 90105192 CN 90105192 A CN90105192 A CN 90105192A CN 1031408 C CN1031408 C CN 1031408C
- Authority
- CN
- China
- Prior art keywords
- water
- viscosity
- additive
- formaldehyde
- reaction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention relates to a preparation method of a non-toxic viscosity reducer for reducing the viscosity of mud (especially fresh water mud) in the geological exploration and drilling processes of oil and gas fields. The viscosity reducer is synthesized by sulfonation and chelation reactions by using lignite, tannin extract, anhydrous sodium sulfite, formaldehyde, sodium hydroxide and an additive A, B prepared from sulfuric acid or hydrochloric acid, ferrous sulfate and potassium permanganate as raw materials. The viscosity reducer has good viscosity reducing effect, is nontoxic, and does not pollute environment and underground water. The raw materials used in the synthesis of the product have wide sources, low price and simple synthesis process, and are suitable for popularization and application.
Description
The present invention relates to-kind in oil-gas field geology exploration and drilling process, be used to reduce the preparation method of the nontoxic treatment agent of mud (it is water mud that the spy picks) an embroidered pattern of black and blue on ancient official robes.
Drilling mud be with
Soil, water are that main raw material and some organic and inorganic treatment agents mix.When wellbore construction, every physics, the chemical property index of drilling fluid all there is corresponding requirement, sticking arm spread is one of main performance index wherein.In order to make this index satisfy needs on drilling geology and the engineering, must carry out viscosity reduction to its basic slurry and handle, have good rheological to guarantee drilling mud.At present, using more widely in finely divided drilling mud system, viscosity-depression agent has chromium-iron lignosulfonate, tannin extract alkali lye etc., wherein, viscosity reducing effect is preferably chromium-iron lignosulfonate, but because the chromium ion that contains in this kind treatment agent is poisonous, the meeting polluted underground water, so make its range of application be subjected to certain limitation, tannin extract alkali lye is-kind of nontoxic viscosity-depression agent, though viscosity reducing effect is lower than chromium-iron lignosulfonate, its consumption is also more, but this kind viscosity-depression agent ferments when using in deep-well easily, thereby causes the drilling mud mis-behave, so range of application also is restricted.
This illustrative purposes provides a kind of preparation method of novel viscosity-decreasing agent used for drilling mud, and this kind falls withered dose, and not only viscosity reducing effect is good, and nontoxic, unlikely environment and underground water is polluted, thereby has wide range of applications.
Viscosity-reducing mechanism of the present invention is as follows: this viscosity-depression agent is adsorbed on by the adsorption group in its molecule on the particulate scission of link edge of clay, and simultaneously aquation group wherein forms the absorption hydration layer in clay particle surface, thus weaken or break clay (
Soil) space grid structure causes the viscosity of drilling mud significantly to reduce.
The preparation method of this kind viscosity-depression agent is as follows:
One, raw material: tannin extract, brown coal, sodium sulphite anhydrous 99.3, formaldehyde, sodium hydroxide and the additive A, the B that produce by hydrochloric acid or sulfuric acid, ferrous sulfate and potassium permanganate.
Two, major equipment: reactor, spraying drying plant.
Three, the preparation of additive A, B:
The preparation of additive A: the sulfuric acid 3-10 liter that in 134kg water, adds concentration 98%; Then, successively, add 44kg ferrous sulfate, 5kg potassium permanganate, middling speed stirred 1 hour.The proportioning that is water, sulfuric acid, ferrous sulfate, potassium permanganate is 26.8: 1.1-3.7: 8.8: 1.
The preparation of additive B: adding concentration in 134kg water is hydrochloric acid 6-l5 liter of 36-37%, then, adds 44kg ferrous sulfate, 5kg potassium permanganate successively, and middling speed stirred l hour.The proportioning of seal water, hydrochloric acid, ferrous sulfate, potassium permanganate is 26.8: 1.4-3.6: 8.8: l.
Four, viscosity-depression agent synthetic method:
This viscosity-depression agent building-up process comprises sulfonation reaction and two stages of chelatropic reaction, and its step division is as follows:
Sulfonation reaction adds 200kg water post-heating in reactor; Under agitation condition, add a certain amount of brown coal or tannin extract, no desert S-WAT, formaldehyde (concentration 36-38%), sodium hydroxide successively; Closed reactor reacts at a certain temperature.Wherein, formaldehyde can add once or twice.
Chelatropic reaction is reduced to 80 ℃ with the fluid temperature of recirculated water after with sulfonation reaction in the reactor; Add 94-145 liters of additive A that prepared or B; Carry out reaction back discharging in 1 hour, promptly obtain powdery product after the spraying oven dry.
Above-mentioned building-up process can be implemented by following three kinds of situations:
Embodiment 1:
The proportioning of admixture is water 200kg during sulfonation reaction: brown coal 25kg: tannin extract 75kg: sodium sulphite anhydrous 99.3 26.4kg: 23 liters in formaldehyde: sodium hydroxide 13.4kg=15: 1.9: 5.7: 2: 1.4: 1.Wherein, formaldehyde is 1.1 times (18 liters) of first oxygenation sodium oxide consumption for the first time, after 3 hours, add the formaldehyde of 0.3 times of sodium hydroxide concentration (5 liters) in reaction under 110-120 ℃ of temperature for the second time again, continue reaction 2 hours.80 ℃ of chelatropic reaction temperature add additive A.
Embodiment 2:
The proportioning of admixture is water 200kg during sulfonation reaction: brown coal 25kg: tannin extract 75kg:
Sodium sulphite anhydrous 99.3 26.4kg: formaldehyde 18 liters=13.6: 1.7: 5.1: 1.8: 1,160-170 ℃ of temperature of reaction, 2.5-3 hours reaction times.80 ℃ of chelatropic reaction temperature add additive B.
Embodiment 3:
The proportioning of sulfonation reaction admixture is water 200kg: tannin extract 100kg: sodium sulphite anhydrous 99.3 26.4kg: 18 liters in formaldehyde: sodium hydroxide 13.4kg=15: 7.5: 2: 1.1: 1, and 120 ℃ of temperature of reaction, 5 hours reaction times.80 ℃ of chelatropic reaction temperature add additive A.
The present invention compares with drilling mud thinner at present commonly used, has following advantages:
1, viscosity reducing effect is good. Through check, this product viscosity reducing effect and at present extensive employing The chromium-iron lignosulfonate thinner is identical, and Heat stability is good, and temperature resistance can reach 180 ℃, therefore can be used for Bore deep-well or ultradeep well.
2, nontoxic, free from environmental pollution and underground water. Because the used raw material of the present invention are Innocuous substance, the product after it is synthetic is through checking also avirulence. Therefore, unlikely after the enforcement Environment and underground water are polluted, and range of application is unrestricted.
3, this product compound property is good, can use simultaneously with general inorganic agent.
Used atom material wide material sources when 4, this product is synthetic, cost ratio chromium-iron lignosulfonate, tannin extract alkali Liquid is cheap, and synthesis technique is also simpler, and vague generalization factory all can produce.
Claims (1)
1, a kind of preparation method of non-toxic viscosity-decreasing agent used for drilling mud, it is characterized in that, this viscosity-depression agent adopts water, brown coal, tannin extract, sodium sulphite anhydrous 99.3, formaldehyde and by water, sulfuric acid or hydrochloric acid, additive A that sulfate industry iron and potassium permanganate are produced or B are raw material, its building-up process comprises sulfonation reaction and two stages of chelatropic reaction: during sulfonation reaction, add 200Kg water earlier, add brown coal successively by proportioning again, tannin extract, sodium sulphite anhydrous 99.3, formaldehyde, its proportioning is: water: brown coal: tannin extract: sodium sulphite anhydrous 99.3: formaldehyde=13.6: 1.7: 5.1: 1.8: 1, reacted 2.5-3 hours under 160-170 ℃ of temperature; Chelatropic reaction, with recirculated water with above-mentioned sulfonation reaction after whole fluid temperatures of gained reduce to 80 ℃, add 94-145 liters of additive A that prepared or B, carry out 1 hour chelatropic reaction, wherein. additive A is by water: sulfuric acid: ferrous sulfate: potassium permanganate=26.8: 1.1-3.7: 8.8: 1 proportioning is produced, and additive B is by water: hydrochloric acid: ferrous sulfate: potassium permanganate=26.8: 1.4-3.6: 8.8: 1 proportioning is produced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90105192 CN1031408C (en) | 1990-08-10 | 1990-08-10 | Preparation method of nontoxic drilling mud viscosity reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90105192 CN1031408C (en) | 1990-08-10 | 1990-08-10 | Preparation method of nontoxic drilling mud viscosity reducer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1048403A CN1048403A (en) | 1991-01-09 |
| CN1031408C true CN1031408C (en) | 1996-03-27 |
Family
ID=4879024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90105192 Expired - Fee Related CN1031408C (en) | 1990-08-10 | 1990-08-10 | Preparation method of nontoxic drilling mud viscosity reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1031408C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1067707C (en) * | 1998-08-26 | 2001-06-27 | 辽河石油勘探局钻井一公司 | Fluorescence-free anti-collapse fluid loss agent and preparation method thereof |
| CN102676131A (en) * | 2012-05-02 | 2012-09-19 | 陆明富 | Method for preparing humic acid viscosity reducer for drilling fluid |
| CN102675560A (en) * | 2012-05-02 | 2012-09-19 | 陆明富 | Preparation method for high temperature resisting viscosity reducer |
| CN104910878A (en) * | 2015-06-11 | 2015-09-16 | 牡丹江市华新化工助剂有限责任公司 | Diluent for high temperature resistant salt-tolerant drilling fluid and preparation method of diluent |
| CN106190082A (en) * | 2016-07-04 | 2016-12-07 | 四川行之智汇知识产权运营有限公司 | Thinner preparation technology for oil drilling |
| CN106190081A (en) * | 2016-07-04 | 2016-12-07 | 四川行之智汇知识产权运营有限公司 | A kind of oil drilling serosity thinner |
| CN107011803B (en) * | 2017-04-20 | 2020-09-22 | 中国石油化工股份有限公司 | Sulfonated tannin extract and preparation method thereof |
| CN113004539B (en) * | 2021-02-08 | 2022-01-11 | 宿州中粮生物化学有限公司 | Viscosity reducer, preparation method thereof and method for reducing viscosity of fermented mash |
-
1990
- 1990-08-10 CN CN 90105192 patent/CN1031408C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1048403A (en) | 1991-01-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1031408C (en) | Preparation method of nontoxic drilling mud viscosity reducer | |
| US4422947A (en) | Wellbore fluid | |
| CN100338169C (en) | Fluid loss additive for boring fluid | |
| US3053673A (en) | Oil well cement compositions | |
| CN109837072A (en) | Strong seal-off effect water-base drilling fluid of a kind of high inhibition suitable for shale formation and preparation method thereof | |
| GB2070028A (en) | Liquid gel concentrates | |
| US3406115A (en) | Method of lessening friction in moving oil-base liquids | |
| US4059533A (en) | Oxygen scavenging methods and additives | |
| US3323593A (en) | Method of treating an oil-bearing formation | |
| Roger et al. | Drilling fluids: making peace with the environment | |
| CN110713824B (en) | Anti-adsorption composite oil displacement system and preparation method thereof | |
| CA1226730A (en) | Drilling fluid additives | |
| CN1067707C (en) | Fluorescence-free anti-collapse fluid loss agent and preparation method thereof | |
| CN111520090A (en) | Treatment method and application of natural gas drilling shallow waste | |
| Gimba et al. | Evaluation of the Potential of Calcium Hydroxide Synthesized from Eggshells as a Drilling Fluid Additive. | |
| CA2006981A1 (en) | Enhanced oil recovery with high molecular weight polyvinylamine formed in-situ | |
| Strickland | Polymer drilling fluids in the 1990's: will they replace oil-based muds? | |
| CN101054511A (en) | High resistivity filtrate reducer and preparing method thereof | |
| CN1030246A (en) | The high-temperature high-pressure drilling fluid auxiliary agent | |
| US3858655A (en) | Treating a subterranean hydrocarbon-containing formation | |
| CN113861992A (en) | Method for preparing sand control agent based on coal slime and application | |
| US4296813A (en) | Well cementing | |
| CN1194064C (en) | Non-toxic agent for thinning drilling fluid and preparation method | |
| CN1032862C (en) | Process of inorganic fire-retarded filler | |
| Walker et al. | The role of potassium in lime muds |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |