DK156962B - PROCEDURE FOR THE PREPARATION OF FILLING LIQUIDS AND PASTS INTENDED FOR USE BY THIS PROCEDURE - Google Patents
PROCEDURE FOR THE PREPARATION OF FILLING LIQUIDS AND PASTS INTENDED FOR USE BY THIS PROCEDURE Download PDFInfo
- Publication number
- DK156962B DK156962B DK371281A DK371281A DK156962B DK 156962 B DK156962 B DK 156962B DK 371281 A DK371281 A DK 371281A DK 371281 A DK371281 A DK 371281A DK 156962 B DK156962 B DK 156962B
- Authority
- DK
- Denmark
- Prior art keywords
- weight
- polyfunctional alcohol
- glycol
- process according
- centipoise
- Prior art date
Links
Classifications
-
- 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
- C09K8/04—Aqueous well-drilling compositions
- C09K8/06—Clay-free compositions
- C09K8/08—Clay-free compositions containing natural organic compounds, e.g. polysaccharides, or derivatives thereof
- C09K8/10—Cellulose or derivatives thereof
-
- 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
- C09K8/04—Aqueous well-drilling compositions
- C09K8/14—Clay-containing compositions
- C09K8/18—Clay-containing compositions characterised by the organic compounds
- C09K8/20—Natural organic compounds or derivatives thereof, e.g. polysaccharides or lignin derivatives
- C09K8/206—Derivatives of other natural products, e.g. cellulose, starch, sugars
Landscapes
- 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)
- Dispersion Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Medicinal Preparation (AREA)
- Detergent Compositions (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Paints Or Removers (AREA)
Description
DK 156962 BDK 156962 B
Den foreliggende opfindelse angâr en fremgangsmâde til frem-stilling af væsker pâ vandig basis, beregnet til at virke soin udfyldningsvæsker til réparation af en br0nd, til pakning, som ballast, til fremstilling af borehuller eller gennerabor-5 inger samt pastaer beregnet til brug ved denne fremgangsmâde.BACKGROUND OF THE INVENTION The present invention relates to a process for preparing liquids on an aqueous basis, intended to act as a filling fluid for repairing a well, for packing, as a ballast, for the preparation of boreholes or gene wells and pastes intended for use therein. course of action.
Ved drift af en oliebr0nd, f.eks. under boring eller under tilpasningen, er det n0dvendigt effektivt at regulere væsker-nes bevægelse. Især er det n0dvendigt at overvinde reservoir-ets tryk, og til dette formai indspr0jtes i br0nden en væske 10 med tilstrækkelig vægtfylde. For at opnâ de 0nskede vægtfylder anvendes som oftest saltopl0sninger, der eventuelt kan inde-holde fine partikler i suspension. Vægtfylden af disse væsker kan sâ indstilles enten ved at variere koncentrationen eller karakteren af saltene i opl0sningen, eller ved at modificere 15 mængden af partikler i suspension. Man kan sâledes anvende vandige opl0sninger mættet med alkalimetalchlorider, ammonium-chlorid, natriumsulfat, natriumcarbonat, calciumchlorid, calciumbromid, zinkchlorid og som i suspension indeholder fine partikler af et sait opl0seligt i vand, men uopl0seligt 20 i saltopl0sninger sâsom ’ natriumchlorid, vandige koncentre-rede opl0sninger af salte sâsom . calciumbromid, calcium= chlorid der er fri for faste partikler, og hvis vægtfylde indstilles ved at variere koncentrationerne.When operating an oil well, e.g. during drilling or during fitting, it is necessary to effectively control the movement of the fluids. In particular, it is necessary to overcome the pressure of the reservoir, and for this purpose a liquid 10 of sufficient density is injected into the well. To obtain the desired weights, salt solutions are usually used which may contain fine particles in suspension. The density of these liquids can then be adjusted either by varying the concentration or character of the salts in the solution, or by modifying the amount of particles in suspension. Thus, aqueous solutions saturated with alkali metal chlorides, ammonium chloride, sodium sulfate, sodium carbonate, calcium chloride, calcium bromide, zinc chloride and containing in suspension contain fine particles of a water-soluble but soluble sodium chloride-soluble solution, solutions of salts such as. calcium bromide, calcium = chloride which is free of solid particles and whose density is adjusted by varying the concentrations.
Disse væsker indeholder ogsâ korrosionsinhibitorer og et mid-25 del som giver viskositet, hvilket sidstnævnte additiv er n0d-vendigt for at undgâ tab af væsker gennem væggene i oliefeltet eller aflejringen.These fluids also contain corrosion inhibitors and a viscosity agent, the latter additive being necessary to avoid loss of fluids through the walls of the oil field or deposit.
Midler,som bibringer viskositet til saltopl0sninger er be-skrevet i de amerikanske patenter nr. 3.882.029, 3.892.275, 30 4.046.197, 4.083.407, 4.175,042 og fransk patent nr. 2.364.957.Agents imparting viscosity to saline solutions are described in U.S. Patents Nos. 3,882,029, 3,892,275, 30,046,197, 4,083,407, 4,175,042 and French Patent No. 2,364,957.
Blandt disse kan nævnes:These include:
Naturlige gummier sâsom gummiarabikum, tragant og dextrin.Natural rubbers such as rubber arabic, tragacanth and dextrin.
22
Polymère, der er opl0selige i vand sâsom acryl- eller vinyl= polymère eller polyacrylamider.Polymers soluble in water such as acrylic or vinyl polymer or polyacrylamides.
Hydro-opl0selige polysaccharider.Hydro-soluble polysaccharides.
I denne sidstnævnte famille, er de vigtigste produkter cel-5 lulosederivater som indeholder mindst en hydroxyalkyl-gruppe per anhydroglucose-dannelse. Som eksempel og uden at listen skal være begrænsende, kan nævnes:In this latter family, the major products are cellulose derivatives containing at least one hydroxyalkyl group per anhydroglucose formation. By way of example and without limiting the list may be mentioned:
Hydroxyalkylcelluloser, sâsom hydroxyethylcellulose og hydroxy= propylcellulose.Hydroxyalkylcelluloses, such as hydroxyethylcellulose and hydroxy = propylcellulose.
10 Carboxyalkylhydroxyalkylcelluloser, sâsom carboxymethylhydroxy= ethylcelluloser.10 Carboxyalkylhydroxyalkylcelluloses, such as carboxymethylhydroxy = ethylcelluloses.
Alkylhydroxylalkylcelluloser, sâsom methylhydroxypropylee 1-luloser.Alkylhydroxylalkylcelluloses, such as methylhydroxypropyle 1-luloser.
Hydroxyalkylalkylcelluloser, sâsom hydroxyethylmethylcel-15 luloser, bydroxypropylmethylcelluloser og hydroxypropylethyl= celluloser.Hydroxyalkylalkyl celluloses, such as hydroxyethylmethyl celluloses, bydroxypropylmethylcelluloses and hydroxypropylethyl celluloses.
Disse midler, som bibringer viskositet,anvendes i varierende koncentrationer som er en funktion af den 0nskede viskositet.These agents which impart viscosity are used at varying concentrations which are a function of the desired viscosity.
I almindelighed er disse koncentrationer mellem 0,1 og 10 g/1 20 saltopl0sning.Generally, these concentrations are between 0.1 and 10 g / l of saline solution.
Opl0sning af disse celluloseadditiver i koncentrerede salt-opl0sninger kan f01ges ved simpel visuel unders0gelse, idet fuldstændig opl0sning af additivet viser sig ved,at der fâs en homogen opl0sning. Man kan ogsâ mâle den tilsyneladende 25 viskositet, som er viskositeten bestemt pâ FANN viskosimeter ved 600 omdrejninger pr. minut divideret med 2. Mâling af denne tilsyneladende viskositet er beskrevet i "Standard Procedure for Testing Drilling Fluids, Sektion 2, Viscosity and Gel Strengh" A.P.I. RECOMMENDED PRACTICE, AmericanDissolution of these cellulose additives in concentrated salt solutions can be followed by simple visual examination, with complete dissolution of the additive being shown by obtaining a homogeneous solution. It is also possible to measure the apparent viscosity, which is the viscosity determined on the FANN viscometer at 600 rpm. The measurement of this apparent viscosity is described in "Standard Procedure for Testing Drilling Fluids, Section 2, Viscosity and Gel Strengh" A.P.I. RECOMMENDED PRACTICE, American
Petroleum Ins ti tu te, API RP'13 B april 1969 side 5 og 6.Petroleum Ins ti tu te, API RP'13 B April 1969 pages 5 and 6.
Denne tilsyneladende viskositet vokser med den opl0ste mængde celluloseaddltiv.This apparent viscosity increases with the dissolved amount of cellulose additive.
DK 156962BDK 156962B
3 53 5
En ulempe ved disse celluloseadditiver er, at deres fuldstænd-ige opl0sning i en koncentreret vandig saltopl0sning, d.v.s. en hvis saltkoncentration overstiger 10%, tager meget l*ang tid og n0dvendigg0r hyppigt en kraftig omr0ring i flere halve dage.A disadvantage of these cellulose additives is that their complete solution in a concentrated aqueous saline solution, i.e. one whose salt concentration exceeds 10%, takes a very long time and requires frequent vigorous stirring for several half days.
1010
For at forbedre oploseligheden i vand af cel1ulosederivaterne og især af carboxymethy1celluloser foreslàs i britisk patent-skrift nr. 2.000.799 anvendelse af blandinger af disse der i -15 vater med glycolethere og vand. Afhængende af de anvendte gly-colethere og/eller den anvendte mængde vand og med polyfunk-tionelle alkoholer kan disse blandinger imidlertid være usta-bile, og deres oplesning i koncentrerede saltopl0sninger er altid meget vanskelig, 20In order to improve the solubility in water of the cellulose derivatives and especially of carboxymethyl celluloses, British Patent Specification No. 2,000,799 proposes the use of mixtures thereof in -15 barrels with glycol ethers and water. However, depending on the glycol ethers used and / or the amount of water used and with polyfunctional alcohols, these mixtures may be unstable and their solution in concentrated saline solutions is always very difficult.
Dethar nu if0lge opfindelsen vist sig, at det er muligt at formindske denne ulempe ved sammen med cellulosemidlet, der bibringer viskositet, at anvende en polyfunktionel alkohol 25 eller en af dens monoethere.It has now been found in accordance with the invention that it is possible to reduce this disadvantage by using, together with the cellulose imparting viscosity, a polyfunctional alcohol 25 or one of its monoethers.
De anvendte polyfunktionelle alkoholer er f0lgende: Pâ den ene side de alkoholer, hvis antal carbonatomer er mel-30 lem 2 og 6, og antal hydroxyl-grupper ogsâ er mellem 2 og 6. Blandt disse kan næynes ethylenglycol, propylenglycol, gly= cerin, hexylenglycol, neopentylglycol, pentaerythrit, sorbit, diethylenglycol og dipropylenglycol; 35 pâ den anden side alkoholer indeholdende et nitrogenatom, hvori antallet af carbonatomer er mellem 2 og 9 og antallet af hy= droxyl-grupper er mellem 1 og 3, sâsom ethanolaminerne, pro= panolaminerne og isopropanolaminerne.The polyfunctional alcohols used are as follows: On the one hand, the alcohols whose number of carbon atoms are between 2 and 6 and the number of hydroxyl groups is also between 2 and 6. Among these can be ethylene glycol, propylene glycol, glycerine, hexylene glycol, neopentyl glycol, pentaerythrite, sorbit, diethylene glycol and dipropylene glycol; 35, on the other hand, contain alcohols containing a nitrogen atom in which the number of carbon atoms is between 2 and 9 and the number of hydroxyl groups is between 1 and 3, such as the ethanolamines, pro-panolamines and isopropanolamines.
DK 156962 BDK 156962 B
44
Disse alkoholer kan ogsâ anvendes i form af en af deres mono= ethere, hvori antallet af carbonatomer i alkyl-kæden i mono= etheren er mellem 1 og 4, sâsom methylglycol, ethylglycol, propylglycol, butylglycol, l-methoxy-2-propanol og 2-methoxy-5 l’-propanol.These alcohols may also be used in the form of one of their mono ethers wherein the number of carbon atoms in the alkyl chain of the mono ether is between 1 and 4 such as methyl glycol, ethyl glycol, propyl glycol, butyl glycol, 1-methoxy-2-propanol and 2-methoxy-5'-propanol.
Vægtforholdet mellem den polyfunktionelle alkohol, eller en af dens monoethere, og midlet, der bibringer viskositet, skal være st0rre end 1. Det optimale forhold varierer med karakteren af midlet, som bibringer viskositet, men i almindelighed opnâs gode resultater nâr dette forhold er mellem 3 og 10.The weight ratio of the polyfunctional alcohol, or one of its monoethers, to the agent imparting viscosity must be greater than 1. The optimum ratio varies with the nature of the agent imparting viscosity, but generally good results are obtained when this ratio is between 3 and 10.
Det viskositetskabende middel og den polyfunktionelle alkohol eller dens monoether, skal være blandet forud f0r de sættes *5 til saltopl0sningen. Nâr den polyfunktionelle alkohol er fast, f.eks. hvis det drejer sig om pentaerythrit, mâ der ogsâ anvendes en ringe mængde vand sâledes, at den fremkomne blan-ing er i form af en homogen pasta.The viscosity-creating agent and the polyfunctional alcohol or its monoether must be pre-mixed before adding * 5 to the saline solution. When the polyfunctional alcohol is solid, e.g. in the case of pentaerythritis, a small amount of water must also be used so that the resulting mixture is in the form of a homogeneous paste.
2 02 0
De sâledes fremkomne blandinger kan anvendes straks eller lagres med henblik pâ senere brug.The resulting mixtures can be used immediately or stored for later use.
De f01gende eksempler illustrerer opfindelsen uden at begrænse denne.The following examples illustrate the invention without limiting it.
2525
Eksempel 1Example 1
Til en saltopl0sning indeholdende 3.155 g CaB^ med en renhed st0rre end 84% 1.037 g vandfri CaCl9fog 340 kubikcentimeter 30 ^ vand med en vægtfylde pâ 1,78 og en tilsyneladende viskositet pâ 26 centipoise ved 25°C sættes 0,85 vægt% af en homogen pasta, fremstillet pâ brugstidspunktet,og bestâende af 12 vægtdeleTo a brine solution containing 3,155 g of CaB ^ having a purity greater than 84% 1,037 g of anhydrous CaCl9 and 340 cubic centimeters of 30 µ of water having a density of 1.78 and an apparent viscosity of 26 centipoise at 25 ° C is added 0.85% by weight homogeneous paste, made at the time of use, and consisting of 12 parts by weight
hydroxyethylcellulose (Cellosize QP 100 MH forhandlet af BPhydroxyethyl cellulose (Cellosize QP 100 MH negotiated by BP
Chemicals) og 88 vægtdele monoethylenglycol. Efter omr0ring 3 5 i en time ved hjælp af en magnetisk csmr0rer er den tilsyneladende viskositet af saltopl0sningen 80 centipoise ved 25°C.Chemicals) and 88 parts by weight of monoethylene glycol. After stirring for one hour using a magnetic stirrer, the apparent viscosity of the saline solution is 80 centipoise at 25 ° C.
DK 156962 BDK 156962 B
5 Nâr systemet fâr lov at henstâ flere dage forbliver det homogeni og den tilsyneladende viskositet forbliver 80 centipoise ved 25°C.5 When the system is allowed to stand for several days, it remains homogeneous and the apparent viscosity remains 80 centipoise at 25 ° C.
5 Nâr til sanimenligning en saltopl0sning af samme sammensætning som ovenfor med en vægtfylde pâ 1,78 og en tilsyneladende viskositet pâ 26 centipoise ved 25°C og med 0,1 vægt% hydroxy= ethylcellulose (Cellosize QP 100 MH) omr0res i 8 timer med 10 magnetiske anr0rear, fâs et System hvis tilsyneladende viskositet ikke er ændret, og som efter henstand er beterogent, hvilket viser, at hydroxyethylcellulosen faktisk ikke er opl0st i den alkaliske opl0sning.When for sanitary comparison, a saline solution of the same composition as above with a density of 1.78 and an apparent viscosity of 26 centipoise at 25 ° C and with 0.1% by weight hydroxy = ethyl cellulose (Cellosize QP 100 MH) is stirred for 8 hours with 10 magnetic anomalies, a System whose apparent viscosity is unchanged and which is, on standby, is obtained, showing that the hydroxyethyl cellulose is in fact not dissolved in the alkaline solution.
1515
Eksempel 2Example 2
Til saltopl0sningen,fremstillet i eksempel 1 med vægtfylde 1,78 og tilsyneladende viskositet pâ 26 centipoise ved 25°C, sættes 0,85 vægt% af en homogen pasta, fremstillet flere dage 20 i forveje^og sammensat af 12 vægtdele hydroxyethylcellulose og 88 vægtdele monoethylenglycol. Efter ca. 30 minutters om-r0ring,ved hjælp af en magnetisk omr0rer er den tilsyneladende viskositet af saltopl0sningen 83 centipoise ved 25°C.To the brine solution, prepared in Example 1, having a density of 1.78 and an apparent viscosity of 26 centipoise at 25 ° C, is added 0.85% by weight of a homogeneous paste prepared several days 20 in advance and composed of 12 parts by weight of hydroxyethyl cellulose and 88 parts by weight. monoethylene glycol. After approx. 30 minutes of stirring, by means of a magnetic stirrer, the apparent viscosity of the saline solution is 83 centipoise at 25 ° C.
25 Nâr det fâr lov at henstâ i flere dage, er systemet homogent og viskositeten er altid 83 centipoise ved 25°C.25 When allowed to stand for several days, the system is homogeneous and the viscosity is always 83 centipoise at 25 ° C.
Eksempel 3 30Example 3 30
Til saltopl0sningen,fremstillet if01ge eksempel 1 med vægtfylde 1,78 og tilsyneladende viskositet pâ 26 centipoise ved 25°C, sættes 0,45 vægt% af en homogen pasta fremkommet ved,at blande 1 vægtdel hydroxyethylcellulose (Cellosize QP 100 MH) og 3,5 vægtdele monoethylenglycol. Efter 60 minutters omr0ring. 35 med magnetisk omr0rer er den tilsyneladende viskositet af op-l0sningen 80 centipoise. ved 25°C.To the brine, prepared according to Example 1, having a density of 1.78 and an apparent viscosity of 26 centipoise at 25 ° C, is added 0.45% by weight of a homogeneous paste obtained by mixing 1 part by weight of hydroxyethyl cellulose (Cellosize QP 100 MH) and 3. 5 parts by weight of monoethylene glycol. After stirring for 60 minutes. 35 with magnetic stirrer, the apparent viscosity of the solution is 80 centipoise. at 25 ° C.
DK 156962BDK 156962B
6 Nâr systemet fâr lov at henstâ i flere dage, er det homogent og viskositeten er altid 83 centipoise. ved 25°C.6 When the system is allowed to stand for several days, it is homogeneous and the viscosity is always 83 centipoise. at 25 ° C.
55
Eksempel 4Example 4
Til saltopl0sningen, fremstillet if01ge eksempel 1 med vægt-fylde 1,78 og tilsyneladende viskositet pâ 26 centipoise ved £0 25°C, sættes 1,7 vægt% af den homogène pasta fremstillet i eksempel 1. Efter ca. 90 minutters omr0ringfved hjælp af en magnetisk <onr0rer er den tilsyneladende viskositet af saltop-10sningen 140 centipoise ved 25°C. Efter 120 minutter er den tilsyneladende viskositet 160 centipoise ved 25°C.To the brine solution prepared according to Example 1 having a density of 1.78 and an apparent viscosity of 26 centipoise at 0 0 25 ° C is added 1.7% by weight of the homogeneous paste prepared in Example 1. After approx. 90 minutes of stirring by means of a magnetic stirrer, the apparent viscosity of the saline solution is 140 centipoise at 25 ° C. After 120 minutes, the apparent viscosity is 160 centipoise at 25 ° C.
15 Nâr systemet fâr lov at henstâ flere dage forbliver det homogent og viskositeten ændres ikke.15 When the system is allowed to stand for several days it remains homogeneous and the viscosity does not change.
Eksempel 5 20Example 5 20
Til saltopl0sningen,fremstillet i eksempel 1 med vægtfylde 1.78 og tilsyneladende viskositet pâ 26 centipoise ved 25°C, sættes 0,42 vægt% af den homogène pasta fremstillet i eksempel 2. Efter ca. 60 minutters omr0ringrved hjælp af magnetisk om- 25 r0rer er den tilsyneladende viskositet af saltopl0sningen 55 centipoises ved 25°C.To the brine solution prepared in Example 1 having a density of 1.78 and an apparent viscosity of 26 centipoise at 25 ° C is added 0.42% by weight of the homogeneous paste prepared in Example 2. After approx. 60 minutes of stirring by means of magnetic stirrer, the apparent viscosity of the saline solution is 55 centipoises at 25 ° C.
Systemet forandrer sig ikke, nâr det henstilles i flere timer. 30 Eksempel 6The system does not change when recommended for several hours. Example 6
Til saltopl0sningen,fremstillet i eksempel 1 med vægtfylde 1.78 og tilsyneladende viskositet pâ 26 centipoise ved 25°C, sættes 0,85 vægt% af en homogen pasta,fremstillet pâ forhând,To the brine solution prepared in Example 1 having a density of 1.78 and apparent viscosity of 26 centipoise at 25 ° C is added 0.85% by weight of a homogeneous paste prepared in advance,
e Ce C
og bestâende af 12 vægtdele hydroxyethylcellulose (Cellosize QP 100 MH) og 88 vægtdele glycerin. Efter 90 minutters omr0ring ved hjælp af en magnetisk anr0rer er den tilsyneladende viskositet af saltopl0sningen 65 centipoise ved 25°C.and consisting of 12 parts by weight of hydroxyethyl cellulose (Cellosize QP 100 MH) and 88 parts by weight of glycerine. After 90 minutes of agitation by a magnetic stirrer, the apparent viscosity of the saline solution is 65 centipoise at 25 ° C.
DK 156962 BDK 156962 B
77
Eksempel 7Example 7
Til saltopl0sningen,fremstillet i eksempel 1 med vægtfylde 1.78 og tilsyneladende viskositet pâ 26 centipoise ved 25°C, sættes 0,85 vægt% af en homogen pasta bestâende af 12 vægt-dele hydroxyethylcellulose (Cellosize QP 100 MH) og 88 vægt-dele af en 50/50 blanding efter vægt af sorbit og vand. Efter ca. 90 minutters omr0ring med magnetisk anr0rer er den tilsyne- 10 ladende viskositet af saltopl0sningen 75 centipoise ved 25°C.To the brine solution prepared in Example 1 having a density of 1.78 and apparent viscosity of 26 centipoise at 25 ° C is added 0.85% by weight of a homogeneous paste consisting of 12 parts by weight of hydroxyethyl cellulose (Cellosize QP 100 MH) and 88 parts by weight of a 50/50 mixture by weight of sorbit and water. After approx. 90 minutes of magnetic stirring, the apparent viscosity of the saline solution is 75 centipoise at 25 ° C.
Eksempel 8Example 8
Til saltopl0sningen,fremstillet i eksempel 1 med vægtfylde 1.78 og tilsyneladende viskositet 26 centipoise. ved 25°C, sættes 0,85 vægt% af en homogen pasta bestâende af 12 vægt-dele hydroxyethylcellulose (Cellosize QP 100 MH) og 88 vægt-dele methylglycol. Efter 90 minutters omr0ring ved hjælp af magnetiske cmr0ier er den tilsyneladende viskositet af sait- 2 0 opl0sningen 75 centipoise ved 25°C.For the brine, prepared in Example 1, having a density of 1.78 and apparent viscosity 26 centipoise. at 25 ° C, 0.85% by weight of a homogeneous paste consisting of 12 parts by weight of hydroxyethyl cellulose (Cellosize QP 100 MH) and 88 parts by weight of methyl glycol is added. After 90 minutes of stirring by magnetic circuits, the apparent viscosity of the solution is 75 centipoise at 25 ° C.
Eksempel 9Example 9
Efter fortynding med vand,af saltopl0sningen fremstillet i 25 eksempel 1 sâledes, at der fâs en vægtfylde pâ 1,60 ved 25°C, tilsættes 1,8 vægt% af pasta'en fremstillet ved eksempel 2.After dilution with water, of the saline solution prepared in Example 1 to give a density of 1.60 at 25 ° C, 1.8% by weight of the paste prepared in Example 2 is added.
Efter 60 minutters omr0ring ved hjælp af magnetiske omr0rer er den tilsyneladende viskositet af saltopl0sningen 60 centipoise ved 25°C.After 60 minutes of agitation by magnetic stirring, the apparent viscosity of the saline solution is 60 centipoise at 25 ° C.
3030
Eksempel 10Example 10
Til saltopl0sningen, i eksempel 1 med vægtfylde 1,78 og tilsyneladende viskositet 26 centipoise ved 25°C, sættes 0,85 05 vægt% af en homogen pasta bestâende af 12 vægtdele hydroxy= ethylcellulose (Cellosize QP 100 MH) og 88 vægtdele triethanol= amin. Efter 90 minutters omr0ring ved hjælp af magnetiske om-To the brine solution, in Example 1 having a density of 1.78 and an apparent viscosity of 26 centipoise at 25 ° C, is added 0.85% by weight of a homogeneous paste consisting of 12 parts by weight of hydroxy = ethylcellulose (Cellosize QP 100 MH) and 88 parts by weight of triethanol = amine. After 90 minutes of stirring by means of magnetic stirring.
Claims (10)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8020664 | 1980-09-26 | ||
| FR8020664A FR2491084A1 (en) | 1980-09-26 | 1980-09-26 | IMPROVEMENT IN THE PROCESS FOR THE PREPARATION OF COMPLETION FLUIDS AND PASTA FOR THE IMPLEMENTATION OF THIS PROCESS |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK371281A DK371281A (en) | 1982-03-27 |
| DK156962B true DK156962B (en) | 1989-10-23 |
| DK156962C DK156962C (en) | 1990-03-19 |
Family
ID=9246308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK371281A DK156962C (en) | 1980-09-26 | 1981-08-21 | PROCEDURE FOR THE PREPARATION OF FILLING LIQUIDS AND PASTS INTENDED FOR USE BY THIS PROCEDURE |
Country Status (24)
| Country | Link |
|---|---|
| EP (1) | EP0049191B1 (en) |
| JP (1) | JPS5787486A (en) |
| AR (1) | AR241473A1 (en) |
| AT (1) | ATE7402T1 (en) |
| AU (1) | AU553240B2 (en) |
| BR (1) | BR8106152A (en) |
| CA (1) | CA1177635A (en) |
| DE (1) | DE3163517D1 (en) |
| DK (1) | DK156962C (en) |
| DZ (1) | DZ321A1 (en) |
| EG (1) | EG15538A (en) |
| FR (1) | FR2491084A1 (en) |
| GR (1) | GR74562B (en) |
| IE (1) | IE51843B1 (en) |
| IL (1) | IL63432A (en) |
| MA (1) | MA19284A1 (en) |
| NO (1) | NO813267L (en) |
| NZ (1) | NZ198238A (en) |
| OA (1) | OA06886A (en) |
| PH (1) | PH22435A (en) |
| PT (1) | PT73599B (en) |
| SU (1) | SU1162373A3 (en) |
| TR (1) | TR21374A (en) |
| ZA (1) | ZA816647B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4496468A (en) * | 1982-03-29 | 1985-01-29 | Nl Industries, Inc. | Hydrated hydroxyethyl cellulose compositions |
| AU576475B2 (en) * | 1982-09-27 | 1988-09-01 | Halliburton Company | Method and composition for fracturing subterranean formations |
| GB2131471B (en) * | 1982-12-09 | 1986-10-22 | British Petroleum Co Plc | Adsorption reducing composition |
| US6673872B2 (en) | 2000-05-17 | 2004-01-06 | General Electric Company | High performance thermoplastic compositions with improved melt flow properties |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2000799A (en) * | 1977-07-05 | 1979-01-17 | Akzo Nv | Liquid cellulose ether-containing compositions |
-
1980
- 1980-09-26 FR FR8020664A patent/FR2491084A1/en active Granted
-
1981
- 1981-07-27 IL IL63432A patent/IL63432A/en not_active IP Right Cessation
- 1981-08-08 EG EG449/81A patent/EG15538A/en active
- 1981-08-21 DK DK371281A patent/DK156962C/en not_active IP Right Cessation
- 1981-08-21 OA OA57479A patent/OA06886A/en unknown
- 1981-08-31 PT PT73599A patent/PT73599B/en unknown
- 1981-09-02 NZ NZ198238A patent/NZ198238A/en unknown
- 1981-09-14 GR GR66052A patent/GR74562B/el unknown
- 1981-09-15 DZ DZ816315A patent/DZ321A1/en active
- 1981-09-18 AT AT81401450T patent/ATE7402T1/en not_active IP Right Cessation
- 1981-09-18 EP EP81401450A patent/EP0049191B1/en not_active Expired
- 1981-09-18 DE DE8181401450T patent/DE3163517D1/en not_active Expired
- 1981-09-23 CA CA000386446A patent/CA1177635A/en not_active Expired
- 1981-09-23 AR AR81286855A patent/AR241473A1/en active
- 1981-09-24 ZA ZA816647A patent/ZA816647B/en unknown
- 1981-09-24 TR TR21374A patent/TR21374A/en unknown
- 1981-09-25 SU SU813336898A patent/SU1162373A3/en active
- 1981-09-25 JP JP56151894A patent/JPS5787486A/en active Granted
- 1981-09-25 BR BR8106152A patent/BR8106152A/en unknown
- 1981-09-25 MA MA19485A patent/MA19284A1/en unknown
- 1981-09-25 NO NO813267A patent/NO813267L/en unknown
- 1981-09-25 AU AU75679/81A patent/AU553240B2/en not_active Ceased
- 1981-09-25 IE IE2235/81A patent/IE51843B1/en not_active IP Right Cessation
- 1981-09-25 PH PH26264A patent/PH22435A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5787486A (en) | 1982-05-31 |
| CA1177635A (en) | 1984-11-13 |
| FR2491084B1 (en) | 1984-06-29 |
| DK371281A (en) | 1982-03-27 |
| IE812235L (en) | 1982-03-26 |
| PT73599B (en) | 1982-11-10 |
| EG15538A (en) | 1986-09-30 |
| TR21374A (en) | 1984-04-26 |
| PT73599A (en) | 1981-09-01 |
| AU7567981A (en) | 1982-04-08 |
| OA06886A (en) | 1983-04-30 |
| BR8106152A (en) | 1982-06-15 |
| IL63432A (en) | 1985-03-31 |
| DK156962C (en) | 1990-03-19 |
| NZ198238A (en) | 1983-11-18 |
| ZA816647B (en) | 1982-09-29 |
| FR2491084A1 (en) | 1982-04-02 |
| DE3163517D1 (en) | 1984-06-14 |
| DZ321A1 (en) | 2004-09-13 |
| JPH0124196B2 (en) | 1989-05-10 |
| NO813267L (en) | 1982-03-29 |
| AU553240B2 (en) | 1986-07-10 |
| MA19284A1 (en) | 1982-04-01 |
| GR74562B (en) | 1984-06-29 |
| IL63432A0 (en) | 1981-10-30 |
| AR241473A1 (en) | 1992-07-31 |
| ATE7402T1 (en) | 1984-05-15 |
| EP0049191A1 (en) | 1982-04-07 |
| SU1162373A3 (en) | 1985-06-15 |
| IE51843B1 (en) | 1987-04-15 |
| EP0049191B1 (en) | 1984-05-09 |
| PH22435A (en) | 1988-09-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3411580A (en) | Mud removal method | |
| US4083407A (en) | Spacer composition and method of use | |
| CA1317754C (en) | Cementing composition and aqueous hydraulic cementing solution comprising water-soluble, nonionic hydrophobically modified hydroxyethyl cellulose | |
| US2425768A (en) | Drilling fluids and method of use | |
| US3804174A (en) | Well cementing method using thixotropic | |
| RU2287549C2 (en) | Stable liquid suspension compositions and the method of their production and application | |
| EA015579B1 (en) | Methods of treating subterranean formations with heteropolysaccharides based fluids | |
| CN106085395A (en) | A kind of microemulsion-type flushing liquor system being applicable to oil base drilling fluid and preparation method | |
| US3024191A (en) | Fracturing earth formations | |
| NO317392B1 (en) | Process for breaking of stabilized viscosity controlled fluids | |
| NO341068B1 (en) | Process for Preparing a Well Maintenance Fluid, Well Maintenance Fluid Mixture and Using a Cationic Guar | |
| WO2011043960A1 (en) | Methods for crosslinking water soluble polymers for use in well applications | |
| US2562148A (en) | Low water-loss cement slurry | |
| CN109337661A (en) | Low bubble displacement of reservoir oil type irrigation of one kind and its preparation method and application | |
| DK156962B (en) | PROCEDURE FOR THE PREPARATION OF FILLING LIQUIDS AND PASTS INTENDED FOR USE BY THIS PROCEDURE | |
| EP0289529B1 (en) | Viscosifiers for brines utilizing hydrophilic polymer-mineral oil systems | |
| EP0046671B1 (en) | Method of thickening heavy brine solutions | |
| US2510153A (en) | Drilling fluids stable in the presence of brines rich in polyvalent cations | |
| US4049054A (en) | Stable mixtures of polymers and surfactants for surfactant flooding | |
| AU2017100604A4 (en) | Method of limiting or reducing permeability of a matrix to liquid or gas flow | |
| CA1176442A (en) | Method of increasing the rate of hydration of activated hydroethyl cellulose compositions | |
| AU2012201448B2 (en) | Modification of solid polysaccharide with transesterification agent | |
| US4459214A (en) | Viscous heavy brines | |
| GB2146320A (en) | High temperature well cement composition | |
| US20190161671A1 (en) | Methods and Thermally Stable Aqueous Borate-Based Cross-Linking Suspensions for Treatment of Subterranean Formations |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PBP | Patent lapsed |