NO173817B - PROCEDURE FOR TREATMENT OF BORESLAM - Google Patents
PROCEDURE FOR TREATMENT OF BORESLAM Download PDFInfo
- Publication number
- NO173817B NO173817B NO88885287A NO885287A NO173817B NO 173817 B NO173817 B NO 173817B NO 88885287 A NO88885287 A NO 88885287A NO 885287 A NO885287 A NO 885287A NO 173817 B NO173817 B NO 173817B
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- Norway
- Prior art keywords
- effluent
- formula
- lignosulfonates
- sulfuric acid
- treatment
- Prior art date
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- 238000000034 method Methods 0.000 title claims description 12
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 18
- 229920001732 Lignosulfonate Polymers 0.000 claims description 11
- 229920000867 polyelectrolyte Polymers 0.000 claims description 11
- 238000005553 drilling Methods 0.000 claims description 9
- 125000002091 cationic group Chemical group 0.000 claims description 6
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 6
- 239000011707 mineral Substances 0.000 claims description 6
- 239000007790 solid phase Substances 0.000 claims description 6
- 239000007791 liquid phase Substances 0.000 claims description 5
- 125000001453 quaternary ammonium group Chemical group 0.000 claims description 5
- 150000001450 anions Chemical class 0.000 claims description 4
- 238000005345 coagulation Methods 0.000 claims description 4
- 230000015271 coagulation Effects 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 125000001183 hydrocarbyl group Chemical group 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 229920003169 water-soluble polymer Polymers 0.000 claims description 3
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical group NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- JZMJDSHXVKJFKW-UHFFFAOYSA-M methyl sulfate(1-) Chemical compound COS([O-])(=O)=O JZMJDSHXVKJFKW-UHFFFAOYSA-M 0.000 claims description 2
- 125000004178 (C1-C4) alkyl group Chemical group 0.000 claims 1
- 229920000642 polymer Polymers 0.000 claims 1
- 238000005189 flocculation Methods 0.000 description 7
- 230000016615 flocculation Effects 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000004927 clay Substances 0.000 description 6
- 235000010755 mineral Nutrition 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 239000004117 Lignosulphonate Substances 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 235000019357 lignosulphonate Nutrition 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000020477 pH reduction Effects 0.000 description 3
- 239000010802 sludge Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 125000000129 anionic group Chemical group 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 208000028659 discharge Diseases 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 241001070941 Castanea Species 0.000 description 1
- 235000014036 Castanea Nutrition 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical group O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 229920001222 biopolymer Polymers 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 235000010216 calcium carbonate Nutrition 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000008234 soft water Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Paper (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Description
Foreliggende oppfinnelse vedrører en fremgangsmåte ved behandling av en vandig effluent, såsom boreslam, slik som angitt i krav l's ingress. Den angår spesielt behandling av boreslam fra oljeboring. The present invention relates to a method for treating an aqueous effluent, such as drilling mud, as stated in claim 1's preamble. It particularly concerns the treatment of drilling mud from oil drilling.
Boreslam inneholder både mineralholdig materiale, spesielt leire, kalsiumkarbonater, magnesium og jordalkalimetaller samt sufater (gips) og oppløselige eller dispergerte organiske stoffer, spesielt ligno-sulfonater, av biopoly-merer og karboksymetyl-cellulose. I 30 - 230 kg fast materiale pr. kubikkmeter har slammet en tetthetsverdi mellom 1,03 og 1,14. Drilling mud contains both mineral-containing material, especially clay, calcium carbonates, magnesium and alkaline earth metals as well as sufates (gypsum) and soluble or dispersed organic substances, especially lignosulfonates, of biopolymers and carboxymethyl cellulose. In 30 - 230 kg of solid material per cubic meter of sludge has a density value between 1.03 and 1.14.
Effluentene ved boring består i hovedsak av boreslam fortynnet med utvaskingsvann, og de kan ikke føres ut i en vann-strøm uten behandling. The effluents from drilling mainly consist of drilling mud diluted with leaching water, and they cannot be discharged into a water stream without treatment.
Størrelsene som er viktige, og som bestemmer tillatelse til utslipp, er farge, lukt, den kjemiske mengde oksygen (DCO), den biologiske mengde oksygen (DBO), suspendert materiale (MES), oppløste salter, mengden av hydrokarboner, og endelig toksisiteten. The quantities that are important, and which determine the permission to discharge, are colour, smell, the chemical amount of oxygen (DCO), the biological amount of oxygen (BOD), suspended matter (MES), dissolved salts, the amount of hydrocarbons, and finally the toxicity.
Lignosufonatene anvendes for behandling av leirene som dipergeringsmiddel og som hemmer av oppblåsningen av leirjord, og dessuten som reduseringsmiddel for filtratet og stabiliseringsmiddel for kaken. Da de er motstandsdyktige mot sterke konsentrasjoner av kalsium og NaCl og mot høye temperaturer, virker de på farven, som kan veksle mellom kastanjebrun og svart, og på DCO, som økes på viktig måte. The lignosufonates are used for treating the clays as a thickening agent and which inhibits the swelling of the clay soil, and also as a reducing agent for the filtrate and a stabilizing agent for the cake. As they are resistant to strong concentrations of calcium and NaCl and to high temperatures, they affect the color, which can alternate between chestnut brown and black, and the DCO, which is increased in an important way.
De forskjellige behandlingsmåter som generelt er foreslått, omfatter en surgjøring i den hensikt å utfelle de mineralholdige materialer og hjelpe de spesielle produkter som som skal separere de organiske materialer. The various treatment methods that are generally proposed include acidification with the intention of precipitating the mineral-containing materials and helping the special products that are to separate the organic materials.
For utslipp fra papirfabrikker beskriver US pat.søkn. 4.459.228 (HAARS) en surgjøring med saltsyre som er tilpasset behandling av utslipp med lite mineralinnhold og som fremskaffer en senkning av pH under 6, noe som begunsti-ger det følgende trinn som består av en tilsetning av polykationer, spesielt polyiminer, som i stor grad kan fjerne lignosulfonatene i saltsyremiljø. For emissions from paper mills, the US patent application describes 4,459,228 (HAARS) an acidification with hydrochloric acid which is adapted to the treatment of discharges with a low mineral content and which produces a lowering of the pH below 6, which favors the following step consisting of an addition of polycations, especially polyimines, as in can largely remove the lignosulfonates in a hydrochloric acid environment.
Boreleirene ifølge fransk patent nr. 2.205.485 (ERAP), blir fortrinnsvis surgjort ved hjelp av svovelsyre, noe som gir støtet til at mineralstoffene utfelles fra sulfatene. The drilling muds according to French patent no. 2,205,485 (ERAP) are preferably acidified with the help of sulfuric acid, which gives the impetus for the mineral substances to precipitate from the sulphates.
En ytre tilsetning av alkali- eller jordalkaliforbindelser er foreslått for å fjerne lignosulfonatene: Dette sist-nevnte trinn er ikke i alle tilfeller utført på gunstig måte. An external addition of alkali or alkaline earth compounds has been proposed to remove the lignosulphonates: this last-mentioned step is not in all cases carried out favorably.
En annen behandling som for tiden blir utført, baserer seg på en anionisk koaguleringsflokkulering i én operasjon, og tillater ikke effektiv fjerning av lignosulfonatene. Another treatment currently carried out is based on an anionic coagulation flocculation in one operation, and does not allow efficient removal of the lignosulfonates.
Den nye fremgangsmåten unngår denne ulempen ved å utføre suksessivt og separat koaguleringen og flokkuleringen ved hjelp av et produkt som er angitt i krav l's karakterise-rende del, og som tillater kontroll og utførelse ved hvert trinn. The new method avoids this disadvantage by successively and separately carrying out the coagulation and flocculation by means of a product which is indicated in the characterizing part of claim 1, and which allows control and execution at each step.
En fremgangsmåte ifølge oppfinnelsen for behandling av vandige effluenter med øket innhold av mineralholdige materialer og inneholdende lignosulfonater såsom boreslam, omfatter trinnene å injisere svovelsyren for å fremskaffe en koagulering, derpå tilsette en kationisk polyelektrolytt som fremskaffer flokkulering og endelig å utføre en mekanisk separasjon av de flytende og faste faser, slik som angitt i krav 1. A method according to the invention for the treatment of aqueous effluents with an increased content of mineral-containing materials and containing lignosulfonates such as drilling mud, comprises the steps of injecting the sulfuric acid to produce coagulation, then adding a cationic polyelectrolyte which produces flocculation and finally carrying out a mechanical separation of the liquid and solid phases, as specified in claim 1.
En kationisk elektrolytt som benyttes ifølge foreliggende oppfinnelse, er en vannoppløselig polymer inneholdende minst 40% repeterende enheter, hver omfattende minst en kvarternær ammoniumgruppe hvor enheten har formel hvor X er 0 eller NH, R er H eller CH3 og M er et kvarter-nært ammoriiumradikal: A cationic electrolyte used according to the present invention is a water-soluble polymer containing at least 40% repeating units, each comprising at least one quaternary ammonium group where the unit has the formula where X is 0 or NH, R is H or CH3 and M is a quaternary ammonium radical :
hvor A" er et anion som er kompatibelt med N<+> og hvor Rlf R2, R3 er hydrokarbonrester med størrelse C-^ til C4. where A" is an anion compatible with N<+> and where R1f R2, R3 are hydrocarbon residues of size C-^ to C4.
Den minimale bestanddel på 40% angår generelt vekt-%. The minimum component of 40% generally refers to % by weight.
I en slik elektrolytt er anionet A~, som er kompatibelt med N<+>, valgt blandt de følgende: Cl", Br", CH3SO4<-.>In such an electrolyte, the anion A~, which is compatible with N<+>, is selected from among the following: Cl", Br", CH3SO4<-.>
På foretrukken måte er hydrokarbonrestene på C^ til C4, betegnet R^, R2, R3, valgt blant alkylforbindelser på C^ til C4. In a preferred way, the hydrocarbon residues of C 1 to C 4 , denoted R 1 , R 2 , R 3 , are selected from alkyl compounds of C 1 to C 4 .
I en slik elektrolytt omfatter, foruten de gjentatte grupper med minst én kvarternær ammoniumgruppe, den vannoppløselige polymer dessuten akrylamidgruppene: In such an electrolyte, in addition to the repeating groups with at least one quaternary ammonium group, the water-soluble polymer also comprises the acrylamide groups:
På samme måte er det fordelaktig å velge som radikal M, en kvarternær ammoniumrest av formel: In the same way, it is advantageous to choose as radical M, a quaternary ammonium residue of formula:
I de forskjellige utførelsesformer av fremgangsmåten er det ønskelig at, etter å ha injisert svovelsyren og fremskaffet den forbedrede blanding med denne svovelsyre med effluenten, man kontrollerer gjennomsnitts-pH i nevnte effluent, og man tilsetter det som er nødvendig for å opprettholde denne pH mellom 5 og 6. In the various embodiments of the method, it is desirable that, after injecting the sulfuric acid and obtaining the improved mixture of this sulfuric acid with the effluent, one controls the average pH in said effluent, and one adds what is necessary to maintain this pH between 5 and 6.
Likeledes, etter å ha injisert en kationisk polyelektrolytt og fremskaffet den forbedrede blanding, anvendes denne for å opprettholde kontakten mellom nevnte polyelektrolytt og effluenten under en tid som er tilstrekkelig lang til at flokkuleringen skal bli effektiv før man utfører den mekaniske separasjonen. Likewise, after injecting a cationic polyelectrolyte and obtaining the improved mixture, this is used to maintain contact between said polyelectrolyte and the effluent for a time sufficiently long for the flocculation to become effective before performing the mechanical separation.
En behandling av leire-effluentene som inneholder lignosulfonatene, omfatter suksessivt i en behandlingslinje: A treatment of the clay effluents containing the lignosulphonates comprises successively in a treatment line:
- injeksjonen av svovelsyre, - the injection of sulfuric acid,
- blanding av denne syre med effluenten, - mixing of this acid with the effluent,
- kontroll av pH for å opprettholde denne pH under 6, - control of pH to maintain this pH below 6,
- injeksjon av en kationisk polyelektrolytt, - injection of a cationic polyelectrolyte,
- blanding av nevnte polyelektrolytt med effluenten, - mixing of said polyelectrolyte with the effluent,
- opprettholdelse av tilstedeværelsen av polyelektrolytt med effluenten ved anvendelse av en flokkuleringsvirvel med tilstrekkelig lengde bestemt som funksjon av utfellelsen, - maintaining the presence of polyelectrolyte with the effluent using a flocculation vortex of sufficient length determined as a function of the precipitation,
og endelig and finally
- separasjon av fast og flytende fase. - separation of solid and liquid phase.
For å tillate de forskjellige bestanddeler å bli blandet med polyelektrolytt og effluent, blir en fast spiralformet avsats som er koaksial med behandlingsaksen, fortrinnsvis anvendt. In order to allow the various components to be mixed with polyelectrolyte and effluent, a fixed helical ledge coaxial with the treatment axis is preferably used.
I anordningene som betraktes som de mest tilfredsstillende, har den anvendte flokkuleringsspiral en lengde på minst 25 m. In the devices considered to be the most satisfactory, the flocculation spiral used has a length of at least 25 m.
Ifølge en foretrukket utførelsesform omfatter separasjons-metodene mellom fast og flytende fase en sentrifugering. According to a preferred embodiment, the separation methods between solid and liquid phase comprise a centrifugation.
Oppfinnelsen vil bli bedre forstått av den følgende beskriv-else gitt i ikke-begrensende hensikt av en anordning med formål å utføre den angitte fremgangsmåten, illustrert ved hjelp av vedlagte figurer. The invention will be better understood from the following description given in a non-limiting manner of a device for the purpose of carrying out the indicated method, illustrated by means of the attached figures.
Fig. 1: Installasjonsskjema. Fig. 1: Installation diagram.
Fig. 2: Vaske-sammenpresningsanordning. Fig. 2: Washing compression device.
I fig. 1 finnes skjematisk en behandlingslinje for en slammengde (1) som går til en utvendig utføring (2) såsom en elv for vannet, og en utføring for den faste pelletterbare fase (11). In fig. 1 schematically shows a treatment line for a quantity of sludge (1) which goes to an external outlet (2) such as a river for the water, and an outlet for the solid pelletizable phase (11).
I denne linje er det fortløpende angitt: In this line, it is continuously stated:
- en ledning (3) som kommer inn med bløtt vann for eventuell fortynning, - en anordning (4) for injeksjon av svovelsyre fortynnet etter behov, - en statisk blander (5) av spiralform som er koaksial med ledningen og som fremskaffer lokal økning av hastighet og turbulens som er gunstig for blanding, - a line (3) that enters with soft water for possible dilution, - a device (4) for injecting sulfuric acid diluted as needed, - a static mixer (5) of spiral shape that is coaxial with the line and that produces a local increase of velocity and turbulence favorable to mixing,
- en anordning (6) for kontroll av pH, - a device (6) for controlling pH,
- en anordning (7) for injeksjon av polyelektrolytt, - a device (7) for injection of polyelectrolyte,
- en blandeanordning (8), - a mixing device (8),
- en anordning (9) kalt "flokkuleringsspiral" bestående av et rør med operativ lengde på minst 25 m laget i form av en spiral, for å redusere plassbehovet og begunstige kontakten, - endelig en anordning (10) for å adskille fast stoff og væske med adskilte utganger for utførelse av vannet (2) og den faste fase som allerede er adskilt (11). Anordningen (10) kan omfatte en sentrifuge. Den kan også bestå av en slampresse som vist på fig. II. - a device (9) called "flocculation spiral" consisting of a pipe with an operational length of at least 25 m made in the form of a spiral, in order to reduce the space requirement and favor contact, - finally a device (10) to separate solid and liquid with separate outputs for carrying out the water (2) and the already separated solid phase (11). The device (10) may comprise a centrifuge. It can also consist of a mud press as shown in fig. II.
Fig.2 omfatter en slampresse bestående av to deler: En rist (12) som er skråstilt i minst 45° i forhold til vertikalen, hvorpå den flokkulerte effluent glir og separeres til fritt vann som passerer gjennom og går til utføringen (2) og til flokkulerte elementer (13), samt et sammenpresningsorgan (14) mot hvilket nevnte flokkulerte elementer (13) glir ved sin vekt, og som avgir ved sin ende (15) en pelletterbar effluent (11), og hvor vannet går gjennom en rist i bunnen (16) for at dette også skal føres mot utgangen (2). Fig.2 comprises a sludge press consisting of two parts: A grate (12) which is inclined at least 45° in relation to the vertical, on which the flocculated effluent slides and is separated into free water which passes through and goes to the outlet (2) and to flocculated elements (13), as well as a compression device (14) against which said flocculated elements (13) slide by their weight, and which emits at its end (15) a pelletizable effluent (11), and where the water passes through a grate at the bottom (16) so that this is also carried towards the output (2).
Eksempel på virkning av anordningen. Example of the effect of the device.
Den behandlede leire er bentonitt med lignosulfonater med en tetthet d=l,04 til- 1,05 og en behandlingsmengde på 3 m<3>/time. The treated clay is bentonite with lignosulphonates with a density d=1.04 to 1.05 and a treatment quantity of 3 m<3>/hour.
Behandlingen av en slik leire med 0,75 kg polyelektrolytt/m<3 >foregår med de karakteristiske forandringer angitt nedenfor: - DCO går fra 3240 til 1000 - 1300, The treatment of such a clay with 0.75 kg polyelectrolyte/m<3> takes place with the characteristic changes indicated below: - DCO goes from 3240 to 1000 - 1300,
- MES i mg/l fra 40000 til 200 - 700, - MES in mg/l from 40000 to 200 - 700,
- lignosulfonatene i g/l fra 2,80 til 1 - 1,4, - the lignosulfonates in g/l from 2.80 to 1 - 1.4,
- pH forblir stabil mellom 5 og 6, - pH remains stable between 5 and 6,
- klorforbindelsene er stabile ved 1,07, men de øker med den anioniske behandling, - den brun-sorte fargen går til en lys gul halmfarge. - the chlorine compounds are stable at 1.07, but they increase with the anionic treatment, - the brown-black color turns to a light yellow straw colour.
I tillegg til at surgjøringen med S04H2 er mindre arbeids-krevende enn med HC1 og fjerner en vesentlig del av Ca<++->ioner, gjør den det gjenværende vann meget anvendelig for fremstilling av ny leire. In addition to the fact that the acidification with SO4H2 is less labor-intensive than with HC1 and removes a substantial part of Ca<++-> ions, it makes the remaining water very usable for the production of new clay.
Claims (5)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8704271A FR2612916B1 (en) | 1987-03-27 | 1987-03-27 | TREATMENT OF BOURBIER WATER RELEASE CONTAINING LIGNOSULFONATES |
| PCT/FR1988/000154 WO1988007499A1 (en) | 1987-03-27 | 1988-03-24 | Treatment of water throws from sloughs containing ligno-sulfonates |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| NO885287D0 NO885287D0 (en) | 1988-11-25 |
| NO885287L NO885287L (en) | 1989-01-25 |
| NO173817B true NO173817B (en) | 1993-11-01 |
| NO173817C NO173817C (en) | 1994-02-09 |
Family
ID=9349488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO885287A NO173817C (en) | 1987-03-27 | 1988-11-25 | Procedure for treating drilling mud |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0307450B1 (en) |
| FR (1) | FR2612916B1 (en) |
| NO (1) | NO173817C (en) |
| WO (1) | WO1988007499A1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5350740A (en) * | 1991-10-28 | 1994-09-27 | M-1 Drilling Fluids Company | Drilling fluid additive and method for inhibiting hydration |
| US5908814A (en) * | 1991-10-28 | 1999-06-01 | M-I L.L.C. | Drilling fluid additive and method for inhibiting hydration |
| US5424284A (en) * | 1991-10-28 | 1995-06-13 | M-I Drilling Fluids Company | Drilling fluid additive and method for inhibiting hydration |
| DE4404767C1 (en) * | 1994-02-16 | 1995-05-04 | Edmund Dr Wax | Device for treating aqueous sludge |
| US6609578B2 (en) | 2000-02-11 | 2003-08-26 | Mo M-I Llc | Shale hydration inhibition agent and method of use |
| US6857485B2 (en) | 2000-02-11 | 2005-02-22 | M-I Llc | Shale hydration inhibition agent and method of use |
| US6484821B1 (en) | 2000-11-10 | 2002-11-26 | M-I L.L.C. | Shale hydration inhibition agent and method of use |
| US6247543B1 (en) | 2000-02-11 | 2001-06-19 | M-I Llc | Shale hydration inhibition agent and method of use |
| US6831043B2 (en) | 2002-01-31 | 2004-12-14 | M-I Llc | High performance water based drilling mud and method of use |
| US7084092B2 (en) | 2003-08-25 | 2006-08-01 | M-I L.L.C. | Shale hydration inhibition agent and method of use |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2862880A (en) * | 1954-07-27 | 1958-12-02 | Armour & Co | Method of clarifying water by hydrophobic polyamines |
| DE1653903A1 (en) * | 1968-02-13 | 1971-03-11 | Eugen Soeding | Device for continuous suction and simultaneous thickening of a suspension or dispersion |
| FR2205485A1 (en) * | 1972-11-08 | 1974-05-31 | Erap Elf Entr Rech Activ Petro | Purifying waste water contg complex lignosulphonates - by co-pptg with silicate, hydroxide or oxide of di- or trivalent metal |
| JPS5035041A (en) * | 1973-08-01 | 1975-04-03 | ||
| DE3038241C2 (en) * | 1980-10-10 | 1983-01-05 | Gesellschaft für Biotechnologische Forschung mbH (GBF), 3300 Braunschweig | Process for the precipitation of lignosulphonates from sulphite waste liquors |
-
1987
- 1987-03-27 FR FR8704271A patent/FR2612916B1/en not_active Expired - Fee Related
-
1988
- 1988-03-24 EP EP88903263A patent/EP0307450B1/en not_active Expired - Lifetime
- 1988-03-24 WO PCT/FR1988/000154 patent/WO1988007499A1/en active IP Right Grant
- 1988-11-25 NO NO885287A patent/NO173817C/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2612916A1 (en) | 1988-09-30 |
| NO885287D0 (en) | 1988-11-25 |
| EP0307450B1 (en) | 1991-02-20 |
| NO173817C (en) | 1994-02-09 |
| NO885287L (en) | 1989-01-25 |
| WO1988007499A1 (en) | 1988-10-06 |
| FR2612916B1 (en) | 1991-02-15 |
| EP0307450A1 (en) | 1989-03-22 |
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