EP0207811A2
Expired / Lapsed
EP
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Mixed metal hydroxides for thickening water or hydrophylic fluids
Assignee: Master Builders Solutions Deutschland GmbH
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Filing: 1986-07-04
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Granted: —
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Expires: 2006-07-04
Abstract
Abstract Novel monodispersed crystalline mixed metal layered hydroxide compounds of the general formula: where m is from zero to about 1; D is a divalent metal; d is from zero to about 4; T is a trivalent metal; A represents anions or negative-valence radicals of valence n; na is from zero to about-3; (m+d) is greater than zero; a is the number of A ions; q is from zero to about 6; and (m+2d+3+na) is equal to or greater than 3. The D metal is preferably Mg and the T metal is preferably A1. These compounds are useful as gelling agents which impart beneficial thixotropic properties to various fluids, such as drilling fluids, especially when employed along with fluid loss agents.
Inventors
- 👤 John L. Burba Iii
- 👤 Greene W. Strother
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 21:26
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/84; C09K8/845; C01; C01B; C01B13/00; C01B13/14; C01B13/36; C01B13/363; C01F; C01F7/00; C01F7/78; C01F7/784; C01F7/786; C09K3/00; C09K8/02; C09K8/03; C09K8/032; C09K8/04; C09K8/14; C09K8/145; C09K8/62; C09K8/66; C09K8/665; C10; C10M; C10M113/00; C10M125/00; C10M125/10; C10M173/00; C10M173/02; C10M177/00; C01P; C01P2002/00; C01P2002/20; C01P2002/22; C01P2002/60; C01P2004/00; C01P2004/20; C01P2006/00; C01P2006/22; C10M2201/00; C10M2201/02; C10M2201/022; C10M2201/06; C10M2201/061; C10M2201/062; C10M2201/063; C10M2201/16; C10M2201/18; C10M2227/00; C10M2227/09; C10N; C10N2010/00; C10N2010/04; C10N2050/00; C10N2050/01
Claims Analysis
Total Claims: 39
Claim 1
Independent Claim
84 words
Monodispersed crystalline mixed metal layered hydroxide compounds conforming to the empirical formula D represents divalent metal ions; T represents trivalent metal ions; A represents anions or negative-valence radicals other than OH- ions; m is from zero to 1; d is from zero to 4; a is the number of ions of A; (m+d) is greater than zero; n is the valence of A; na is from zero to -3; q is from zero to 6; and (m+2d+3+na) is equal to or greater than 3.
Claim 2
Dependent Claim
84 words
Monodispersed crystalline mixed metal layered hydroxide compounds conforming to the empirical formula D represents divalent metal ions; T represents trivalent metal ions; A represents anions or negative-valence radicals other than OH- ions; m is from zero to 1; d is from zero to 4; a is the number of ions of A; (m+d) is greater than zero; n is the valence of A; na is from zero to -3; q is from zero to 6; and (m+2d+3+na) is equal to or greater than 3.
Claim 3
Dependent Claim
17 words
A compound as claimed in Claim 1, wherein m is in the range of 0.5 to 0.75.
Claim 4
Dependent Claim
17 words
A compound as claimed in Claim 1, wherein d is in the range of 1 to 3.
Claim 5
Dependent Claim
29 words
A compound as claimed in any one of the preceding claims, wherein D is at least one of Mg, Ca, Ba, Sr, Mn, Fe, Co, Ni, Cu and Zn.
Claim 6
Dependent Claim
17 words
A compound as claimed in Claim 4, wherein D is at least one of Mg and Ca.
Claim 7
Dependent Claim
23 words
A compound as claimed in any one of the preceding claims, wherein T is at least one of Al, Ga, Cr and Fe.
Claim 8
Dependent Claim
13 words
A compound as claimed in Claim 6, wherein T is Fe or Al.
Claim 9
Dependent Claim
29 words
A compound as claimed in any one of the preceding claims, wherein the A anion is monovalent, divalent, trivalent or polyvalent and the value of na is not zero.
Claim 10
Dependent Claim
32 words
A compound as claimed in any one of the preceding claims, wherein the A anion is at least one of halide, sulfate, nitrate, phosphate, carbonate, glycolate, lignosulfate, polycarboxylate, polyacrylate and sodium polyacylate.
Claim 11
Dependent Claim
24 words
A compound as claimed in any one of the preceding claims, wherein D is Mg, T is Al, and A is an inorganic anion.
Claim 12
Dependent Claim
20 words
A compound as claimed in Claim 10, wherein the compound is MgAl(OH) 4 . 7 Cl O . 3 .
Claim 13
Dependent Claim
32 words
A compound as claimed in any one of the preceding claims in the form of monolayer unit cell crystals having a thickness in the range of 0.8-1.6 mn (8 to 16 angstroms).
Claim 14
Dependent Claim
24 words
The use of a compound as claimed in any one of the preceding claims, as a thickener for an aqueous or hydrophylic organic liquid.
Claim 15
Dependent Claim
25 words
A composition comprising a compound as claimed in any one of Claims 1 to 12 and a liquid for use as a drilling fluid component.
Claim 16
Dependent Claim
20 words
A composition as claimed in Claim 14, wherein said drilling fluid also contains at least one fluid loss control agent.
Claim 17
Dependent Claim
17 words
An aqueous drilling fluid containing a compound as claimed in any one of Claims 1 to 12.
Claim 18
Dependent Claim
113 words
A process for preparing compounds conforming to formula (I) of Claim 1, said process comprising: (a) preparing a solution of predetermined quantities of compounds which provide the desired predetermined amounts of Li, D, T and A ions; (b) admixing said solution with an alkaline solution which provides a source of hydroxyl ions to cause coprecipitation of such Li, D and T metals as crystalline mixed metal compounds containing, as anions, hydroxyl ions and A ions, said crystals being monodispersed and exhibiting monolayer unit cell structures as determined. by crystallographic analysis; and (c) said admixing being performed in a manner in which rapid, thorough, flash precipitation is achieved without the use of shearing agitation.
Claim 19
Dependent Claim
145 words
A process as claimed in Claim 17, wherein said compounds are formed by merging, in a reaction zone, a measured or metered quantity of a metal cation-containing feed solution with a predetermined quantity of a hydroxyl ion-containing feed solution in a manner whereby rapid, intimate mixing is achieved in the reaction zone, while substantially avoiding shearing agitation which would break up the flocs which form during said mixing as a result of the reaction which occurs therein; and the so-formed reaction mixture is removed from the reaction zone ahead of subsequent measured or metered quantities of the feed solutions, thereby substantially avoiding the mixing, in the reaction zone, of the subsequent quantities of feed solutions with prior quantities of feed solutions; said method being carried out under substantially steady-state conditions, using substantially constant conditions, in the reaction zone, of temperature, pH, and ratio of reactants.
Claim 20
Dependent Claim
57 words
A gelled liquid agent for thickening process fluids, characterized by its thixotropicity and resistance to fluid loss, said gelled liquid agent comprising: a major proportion of a liquid which is compatible or miscible with said process fluid; and a minor proportion of gellant which conforms substantially to the compound of any one of Claims 1 to 12.
Claim 21
Dependent Claim
105 words
ALTERNATIVE CLAIMS FOR CONTRACTING STATE: AT 1. The use of monodispersed crystalline mixed metal layered hydroxide compounds conforming to the empirical formula D represents divalent metal ions; T represents trivalent metal ions; A represents anions or negative-valence radicals other than OH - ions; m is from zero to 1; d is from zero to 4; a is the number of ions of A; (m+d) is greater than zero; n is the valence of A; na is from zero to -3; q is from zero to 6; and (m+2d+3+na) is equal to or greater than 3, as a thickener for an aqueous or hydrophylic organic liquid.
Claim 22
Dependent Claim
17 words
A use as claimed in Claim 1, wherein m is in the range of 0.5 to 0.75.
Claim 23
Dependent Claim
17 words
A use as claimed in Claim 1, wherein d is in the range of 1 to 3.
Claim 24
Dependent Claim
29 words
A use as claimed in any one of the preceding claims, wherein D is at least one of Mg, Ca, Ba, Sr, Mn, Fe, Co, Ni, Cu and Zn.
Claim 25
Dependent Claim
17 words
A use as claimed in Claim 4, wherein D is at least one of Mg and Ca.
Claim 26
Dependent Claim
23 words
A use as claimed in any one of the preceding claims, wherein T is at least one of Al, Ga, Cr and Fe.
Claim 27
Dependent Claim
13 words
A use as claimed in Claim 6, wherein T is Fe or Al.
Claim 28
Dependent Claim
29 words
A use as claimed in any one of the preceding claims, wherein the A anion is monovalent, divalent, trivalent or polyvalent and the value of na is not zero.
Claim 29
Dependent Claim
32 words
A use as claimed in any one of the preceding claims, wherein the A anion is at least one of halide, sulfate, nitrate, phosphate, carbonate, glycolate, lignosulfate, polycarboxylate, polyacrylate and sodium polyacylate.
Claim 30
Dependent Claim
24 words
A use as claimed in any one of the preceding claims, wherein D is Mg, T is Al, and A is an inorganic anion.
Claim 31
Dependent Claim
16 words
A use as claimed in Claim 10, wherein the compound is MgAl(OH) 4 . 7 ClO.3.
Claim 32
Dependent Claim
32 words
A use as claimed in any one of the preceding claims in the form of monolayer unit cell crystals having a thickness in the range of 0.8-1.6 mn (8 to 16 angstroms).
Claim 33
Dependent Claim
25 words
A composition comprising a compound as defined in any one of Claims 1 to 12 and a liquid for use as a drilling fluid component.
Claim 34
Dependent Claim
20 words
A composition as claimed in Claim 13, wherein said drilling fluid also contains at least one fluid loss control agent.
Claim 35
Dependent Claim
17 words
An aqueous drilling fluid containing a compound as defined in any one of Claims 1 to 12.
Claim 36
Dependent Claim
113 words
A process for preparing compounds conforming to formula (I) of Claim 1, said process comprising: (a) preparing a solution of predetermined quantities of compounds which provide the desired predetermined amounts of Li, D, T and A ions; (b) admixing said solution with an alkaline solution which provides a source of hydroxyl ions to cause coprecipitation of such Li, D and T metals as crystalline mixed metal compounds containing, as anions, hydroxyl ions and A ions, said crystals being monodispersed and exhibiting monolayer unit cell structures as determined by crystallographic analysis; and (c) said admixing being performed in a manner in which rapid, thorough, flash precipitation is achieved without the use of shearing agitation.
Claim 37
Dependent Claim
145 words
A process as claimed in Claim 16, wherein said compounds are formed by merging, in a reaction zone, a measured or metered quantity of a metal cation-containing feed solution with a predetermined quantity of a hydroxyl ion-containing feed solution in a manner whereby rapid, intimate mixing is achieved in the reaction zone, while substantially avoiding shearing agitation which would break up the flocs which form during said mixing as a result of the reaction which occurs therein; and the so-formed reaction mixture is removed from the reaction zone ahead of subsequent measured or metered quantities of the feed solutions, thereby substantially avoiding the mixing, in the reaction zone, of the subsequent quantities of feed solutions with prior quantities of feed solutions; said method being carried out under substantially steady-state conditions, using substantially constant conditions, in the reaction zone, of temperature, pH, and ratio of reactants.
Claim 38
Dependent Claim
27 words
A process as claimed in Claim 16 or Claim 17, wherein the compound of formula (I) is as defined in any one of Claims 2 to 12.
Claim 39
Dependent Claim
59 words
A gelled liquid agent for thickening process fluids, characterized by its thixotropicity and resistance to fluid lose, said gelled liquid agent comprising: a major proportion of a liquid which is compatible or miscible with said process fluid; and a minor proportion of gellant which conforms substantially to the compound as defined in any one of Claims 1 to 12.
References Cited (Backward Citations)
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