Liquid purification or separation – Processes – Ion exchange or selective sorption
Reexamination Certificate
2007-02-06
2007-02-06
Hruskoci, Peter A. (Department: 1724)
Liquid purification or separation
Processes
Ion exchange or selective sorption
C166S244100, C166S267000, C175S066000, C210S722000, C210S729000, C210S912000
Reexamination Certificate
active
11145281
ABSTRACT:
A method of reclaiming a well completion brine solution by using an organic chelant that is capable of discriminating between (i) iron and/or non-zinc heavy metals; and (ii) calcium and zinc. The chelant is of the formula:and may be either a neutral compound, a corresponding salt, or a corresponding quaternary salt, wherein:D is F—A (Y3)u(Y4)v;R is independently selected from Cpor CpC(O);Cpis a C1–C36hydrocarbyl group, optionally substituted with one or more substituents selected the group consisting of halogen, hydroxyl, sulfate, CH2CO2Z or —(CH2)nPO(OZ)2groups;each A is independently selected from —N and —P;Y1is independently selected from J, —[(F)—A(J)]wY6and R;J, R1, Y2, Y3, Y4, Y5and Y6are independently selected from the group consisting of —H, R, —(F)nCO2Z and —(CH2)nPO(OZ)2;each F is independently selected from a C1–C12hydrocarbyl group, optionally substituted with one or more substituents selected the group consisting of halogen, hydroxyl, sulfate, CH2CO2Z or —(CH2)nPO(OZ)2groups;Z is —H or a balanced counterion of an alkali or alkaline earth metal or NH4+;m is 0 to 7;n is 1 to 7;r+s+t is 1 or 2;u+v is 1 or 2; andw is 0 to 7provided when m is 0, no more than one of R1, Y1, Y2and Y5can be —H.
REFERENCES:
patent: 4303624 (1981-12-01), Dotson et al.
patent: 4465598 (1984-08-01), Darlington et al.
patent: 4507208 (1985-03-01), Simon et al.
patent: 5177243 (1993-01-01), Parker
patent: 5191081 (1993-03-01), Parker
patent: 5191106 (1993-03-01), Parker
patent: 5250728 (1993-10-01), Parker et al.
patent: 5284972 (1994-02-01), Parker et al.
patent: 5302297 (1994-04-01), Barthrope
patent: 5449822 (1995-09-01), Parker et al.
patent: 5536452 (1996-07-01), Black
patent: 5547583 (1996-08-01), Alexander
patent: 5587022 (1996-12-01), Black
patent: 5688981 (1997-11-01), Nonomura
patent: 5728733 (1998-03-01), Ptchelintsev
patent: 5783527 (1998-07-01), Dobson et al.
patent: 5801139 (1998-09-01), Fair et al.
patent: 5821215 (1998-10-01), Crudden et al.
patent: 5837644 (1998-11-01), Nakanishi et al.
patent: 5869441 (1999-02-01), Fair et al.
patent: 5962717 (1999-10-01), Nonomura et al.
patent: 5989353 (1999-11-01), Skee et al.
The Merck Index, p. 8531, 1989.
Hampshire, Sep. 2000,Product information: Hampshire N-acyl ED3A anionic chelating surfactants.
Foxenberg, W.E., Society of Petroleum Engineers (SPE), 24784, Oct. 1992,Optimizing the quality of high-density brines for maximum performance and economic value, Budavari, S., ed., Oct. 1992.
Bridges, K.L.,Completion and Workover Fluids, Reclamation and/or disposal of used fluids and environmental considerations, 2000.
Javora Paul H.
Qu Qi
LandOfFree
Method of reclaiming a well completion brine solutions using... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of reclaiming a well completion brine solutions using..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of reclaiming a well completion brine solutions using... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3832563