WINTERIZING AGENTS FOR OIL BASE POLYMER SLURRIES AND METHOD FOR MAKING AND USING SAME
A new class of winterizing compositions are disclosed including a winterizing agents being a compound of general formula Z(R 1 ) m , where Z is a polyol having between 5 and 30 carbon atoms, R 1 is a carbyl group having between about 10 and about 40 carbon atoms, and where m is an integer having the value of 1 or 2, when m is 2, R 1 can be the same or different and one or more carbon atoms of R 1 can be replaced by B, N, O, Si, P, S, Ge and/or mixtures thereof and one or more of the hydrogen atoms in R 1 can be replaced by F, Cl, Br, I, CONR 2 2 , COOR 2 , OR 2 , NR 2 2 , SR 2 , PR 2 2 , and/or mixtures thereof and where R 2 can be a hydrogen atom, alkyl, aryl, alkylaryl or arylalkyl group having between 1-20 carbon atoms where one or more carbon or hydrogen atoms can be replaced as set forth for R 1 .
1 . A winterizing composition comprising:
a monoester of a polyol, a diester of a polyol, or a mixtures or combinations thereof,
where the composition is adapted to reduce a pour point temperature.
2 . The composition of claim 1 , wherein the polyol monoesters or polyol diesters are compounds of the general formula (I):
Z(R 1 ) m (I)
where Z is a polyol having between 5 and 30 carbon atoms, R 1 is a carbyl group having between about 10 and about 40 carbon atoms, and where m is an integer having the value of 1 or 2, when m is 2, R 1 can be the same or different and one or more carbon atoms of R 1 can be replaced by B, N, O, Si, P, S, Ge and/or mixtures thereof and one or more of the hydrogen atoms in R 1 can be replaced by F, Cl, Br, I, CONR 2 2 , COOR 2 , OR 2 , NR 2 2 , SR 2 , PR 2 2 , and/or mixtures thereof and where R 2 can be a hydrogen atom, alkyl, aryl, alkylaryl or arylalkyl group having between 1-20 carbon atoms where one or more carbon or hydrogen atoms can be replaced as set forth for R 1 .
3 . The composition of claim 1 , wherein the polyol monoesters or polyol diesters are compounds general formula (II):
Z′(R 1 ) m (II)
where Z′ is a sugar alcohol having between 5 and 18 carbon atoms, R 1 is a carbyl group having between about 10 and about 40 carbon atoms, and where m is an integer having the value of 1 or 2, when m is 2, R 1 can be the same or different and one or more carbon atoms of R 1 can be replaced by B, N, O, Si, P, S, Ge and/or mixtures thereof and one or more of the hydrogen atoms in R 1 can be replaced by F, Cl, Br, I, CONR 2 2 , COOR 2 , OR 2 , NR 2 2 , SR 2 , PR 2 2 , and/or mixtures thereof and where R 2 can be a hydrogen atom, alkyl, aryl, alkylaryl or arylalkyl group having between 1-20 carbon atoms where one or more carbon or hydrogen atoms can be replaced as set forth for R 1 .
4 . The composition of claim 1 , wherein the polyol monoesters or polyol diesters are compounds general formula (III):
Z″(R 1 ) m (III)
where Z″ is a sugar alcohol having between 5 and 12 carbon atoms, R 1 is a carbyl group having between about 10 and about 40 carbon atoms, and where m is an integer having the value of 1 or 2, when m is 2, R 1 can be the same or different and one or more carbon atoms of R 1 can be replaced by B, N, O, Si, P, S, Ge and/or mixtures thereof and one or more of the hydrogen atoms in R 1 can be replaced by F, Cl, Br, I, CONR 2 2 , COOR 2 , OR 2 , NR 2 2 , SR 2 , PR 2 2 , and/or mixtures thereof and where R 2 can be a hydrogen atom, alkyl, aryl, alkylaryl or arylalkyl group having between 1-20 carbon atoms where one or more carbon or hydrogen atoms can be replaced as set forth for R 1 .
5 . The composition of claim 1 , wherein the polyol monoesters or polyol diesters are compounds selected from the group consisting of sorbitan monooleate, sorbitan sesquioleate, sorbitan monostearate, sorbitan sesquistearate, sorbitan monolinoleate, sorbitan sequilinoleate, sorbitan monomyristoleate, sorbitan sequimyristoleate, sorbitan monopalmitoleate, sorbitan sequipalmitoleate, or mixtures and combinations thereof.
6 . A composition for fracturing a subterranean formation containing a gas and/or crude oil and penetrated by a wellbore, the fracturing fluid composition comprising:
an oil based slurry including a base oil, an organophillic clay, a polar activator, a wetting agent and a winterizing composition comprising one or a plurality of polyol monoesters and/or polyol diesters.
7 . The composition of claim 6 , wherein the polyol monoesters or polyol diesters are compounds of the general formula (I):
Z(R 1 ) m (I)
where Z is a polyol having between 5 and 30 carbon atoms, R 1 is a carbyl group having between about 10 and about 40 carbon atoms, and where m is an integer having the value of 1 or 2, when m is 2, R 1 can be the same or different and one or more carbon atoms of R 1 can be replaced by B, N, O, Si, P, S, Ge and/or mixtures thereof and one or more of the hydrogen atoms in R 1 can be replaced by F, Cl, Br, I, CONR 2 2 , COOR 2 , OR 2 , NR 2 2 , SR 2 , PR 2 2 , and/or mixtures thereof and where R 2 can be a hydrogen atom, alkyl, aryl, alkylaryl or arylalkyl group having between 1-20 carbon atoms where one or more carbon or hydrogen atoms can be replaced as set forth for R 1 .
8 . The composition of claim 6 , wherein the polyol monoesters or polyol diesters are compounds general formula (II):
Z′(R 1 ) m (II)
where Z′ is a sugar alcohol having between 5 and 18 carbon atoms, R 1 is a carbyl group having between about 10 and about 40 carbon atoms, and where m is an integer having the value of 1 or 2, when m is 2, R 1 can be the same or different and one or more carbon atoms of R 1 can be replaced by B, N, O, Si, P, S, Ge and/or mixtures thereof and one or more of the hydrogen atoms in R 1 can be replaced by F, Cl, Br, I, CONR 2 2 , COOR 2 , OR 2 , NR 2 2 , SR 2 , PR 2 2 , and/or mixtures thereof and where R 2 can be a hydrogen atom, alkyl, aryl, alkylaryl or arylalkyl group having between 1-20 carbon atoms where one or more carbon or hydrogen atoms can be replaced as set forth for R 1 .
9 . The composition of claim 6 , wherein the polyol monoesters or polyol diesters are compounds general formula (III):
Z″(R 1 ) m (III)
where Z″ is a sugar alcohol having between 5 and 12 carbon atoms, R 1 is a carbyl group having between about 10 and about 40 carbon atoms, and where m is an integer having the value of 1 or 2, when m is 2, R 1 can be the same or different and one or more carbon atoms of R 1 can be replaced by B, N, O, Si, P, S, Ge and/or mixtures thereof and one or more of the hydrogen atoms in R 1 can be replaced by F, Cl, Br, I, CONR 2 2 , COOR 2 , OR 2 , NR 2 2 , SR 2 , PR 2 2 , and/or mixtures thereof and where R 2 can be a hydrogen atom, alkyl, aryl, alkylaryl or arylalkyl group having between 1-20 carbon atoms where one or more carbon or hydrogen atoms can be replaced as set forth for R 1 . . .
10 . The composition of claim 6 , wherein the polyol monoesters or polyol diesters are compounds selected from the group consisting of sorbitan monooleate, sorbitan sesquioleate, sorbitan monostearate, sorbitan sesquistearate, sorbitan monolinoleate, sorbitan sequilinoleate, sorbitan monomyristoleate, sorbitan sequimyristoleate, sorbitan monopalmitoleate, sorbitan sequipalmitoleate, or mixtures and combinations thereof.
11 . A composition for drilling into a subterranean formation containing a gas and/or crude oil, the drilling fluid composition comprising:
an oil based slurries including a base oil, an organophillic clay, a polar activator, a wetting agent and a winterizing composition comprising one or a plurality of polyol monoesters and/or polyol diesters.
12 . The composition of claim 11 , wherein the polyol monoesters or polyol diesters are compounds of the general formula (I):
Z(R 1 ) m (I)
where Z is a polyol having between 5 and 30 carbon atoms, R 1 is a carbyl group having between about 10 and about 40 carbon atoms, and where m is an integer having the value of 1 or 2, when m is 2, R 1 can be the same or different and one or more carbon atoms of R 1 can be replaced by B, N, O, Si, P, S, Ge and/or mixtures thereof and one or more of the hydrogen atoms in R 1 can be replaced by F, Cl, Br, I, CONR 2 2 , COOR 2 , OR 2 , NR 2 2 , SR 2 , PR 2 2 , and/or mixtures thereof and where R 2 can be a hydrogen atom, alkyl, aryl, alkylaryl or arylalkyl group having between 1-20 carbon atoms where one or more carbon or hydrogen atoms can be replaced as set forth for R 1 .
13 . The composition of claim 11 , wherein the polyol monoesters or polyol diesters are compounds general formula (II):
Z′(R 1 ) m (II)
where Z′ is a sugar alcohol having between 5 and 18 carbon atoms, R 1 is a carbyl group having between about 10 and about 40 carbon atoms, and where m is an integer having the value of 1 or 2, when m is 2, R 1 can be the same or different and one or more carbon atoms of R 1 can be replaced by B, N, O, Si, P, S, Ge and/or mixtures thereof and one or more of the hydrogen atoms in R 1 can be replaced by F, Cl, Br, I, CONR 2 2 , COOR 2 , OR 2 , NR 2 2 , SR 2 , PR 2 2 , and/or mixtures thereof and where R 2 can be a hydrogen atom, alkyl, aryl, alkylaryl or arylalkyl group having between 1-20 carbon atoms where one or more carbon or hydrogen atoms can be replaced as set forth for R 1 .
14 . The composition of claim 11 , wherein the polyol monoesters or polyol diesters are compounds general formula (III):
Z″(R 1 ) m (III)
where Z″ is a sugar alcohol having between 5 and 12 carbon atoms, R 1 is a carbyl group having between about 10 and about 40 carbon atoms, and where m is an integer having the value of 1 or 2, when m is 2, R 1 can be the same or different and one or more carbon atoms of R 1 can be replaced by B, N, O, Si, P, S, Ge and/or mixtures thereof and one or more of the hydrogen atoms in R 1 can be replaced by F, Cl, Br, I, CONR 2 2 , COOR 2 , OR 2 , NR 2 2 , SR 2 , PR 2 2 , and/or mixtures thereof and where R 2 can be a hydrogen atom, alkyl, aryl, alkylaryl or arylalkyl group having between 1-20 carbon atoms where one or more carbon or hydrogen atoms can be replaced as set forth for R 1 . . .
15 . The composition of claim 11 , wherein the polyol monoesters or polyol diesters are compounds selected from the group consisting of sorbitan monooleate, sorbitan sesquioleate, sorbitan monostearate, sorbitan sesquistearate, sorbitan monolinoleate, sorbitan sequilinoleate, sorbitan monomyristoleate, sorbitan sequimyristoleate, sorbitan monopalmitoleate, sorbitan sequipalmitoleate, or mixtures and combinations thereof.
16 . A composition for removing bound water from a producing subterranean formation containing a gas and/or crude oil and penetrated by a wellbore, the producing fluid composition comprising:
an oil based slurries including a base oil, an organophillic clay, a polar activator, a wetting agent and a winterizing composition comprising one or a plurality of polyol monoesters and/or polyol diesters.
17 . The composition of claim 16 , wherein the polyol monoesters or polyol diesters are compounds of the general formula (I):
Z(R 1 ) m (I)
where Z is a polyol having between 5 and 30 carbon atoms, R 1 is a carbyl group having between about 10 and about 40 carbon atoms, and where m is an integer having the value of 1 or 2, when m is 2, R 1 can be the same or different and one or more carbon atoms of R 1 can be replaced by B, N, O, Si, P, S, Ge and/or mixtures thereof and one or more of the hydrogen atoms in R 1 can be replaced by F, Cl, Br, I, CONR 2 2 , COOR 2 , OR 2 , NR 2 2 , SR 2 , PR 2 2 , and/or mixtures thereof and where R 2 can be a hydrogen atom, alkyl, aryl, alkylaryl or arylalkyl group having between 1-20 carbon atoms where one or more carbon or hydrogen atoms can be replaced as set forth for R 1 .
18 . The composition of claim 16 , wherein the polyol monoesters or polyol diesters are compounds general formula (II):
Z′(R 1 ) m (II)
where Z′ is a sugar alcohol having between 5 and 18 carbon atoms, R 1 is a carbyl group having between about 10 and about 40 carbon atoms, and where m is an integer having the value of 1 or 2, when m is 2, R 1 can be the same or different and one or more carbon atoms of R 1 can be replaced by B, N, O, Si, P, S, Ge and/or mixtures thereof and one or more of the hydrogen atoms in R 1 can be replaced by F, Cl, Br, I, CONR 2 2 , COOR 2 , OR 2 , NR 2 2 , SR 2 , PR 2 2 , and/or mixtures thereof and where R 2 can be a hydrogen atom, alkyl, aryl, alkylaryl or arylalkyl group having between 1-20 carbon atoms where one or more carbon or hydrogen atoms can be replaced as set forth for R 1 .
19 . The composition of claim 16 , wherein the polyol monoesters or polyol diesters are compounds general formula (III):
Z″(R 1 ) m (III)
where Z″ is a sugar alcohol having between 5 and 12 carbon atoms, R 1 is a carbyl group having between about 10 and about 40 carbon atoms, and where m is an integer having the value of 1 or 2, when m is 2, R 1 can be the same or different and one or more carbon atoms of R 1 can be replaced by B, N, O, Si, P, S, Ge and/or mixtures thereof and one or more of the hydrogen atoms in R 1 can be replaced by F, Cl, Br, I, CONR 2 2 , COOR 2 , OR 2 , NR 2 2 , SR 2 , PR 2 2 , and/or mixtures thereof and where R 2 can be a hydrogen atom, alkyl, aryl, alkylaryl or arylalkyl group having between 1-20 carbon atoms where one or more carbon or hydrogen atoms can be replaced as set forth for R 1 . . .
20 . The composition of claim 16 , wherein the polyol monoesters or polyol diesters are compounds selected from the group consisting of sorbitan monooleate, sorbitan sesquioleate, sorbitan monostearate, sorbitan sesquistearate, sorbitan monolinoleate, sorbitan sequilinoleate, sorbitan monomyristoleate, sorbitan sequimyristoleate, sorbitan monopalmitoleate, sorbitan sequipalmitoleate, or mixtures and combinations thereof.
21 . A method for fracturing a formation comprising:
pumping, into a producing formation at a pressure sufficient to fracture the formation and to enhance productivity, a fracturing fluid comprising:
a proppant and
an oil based slurries including a base oil, an organophillic clay, a polar activator, a wetting agent and a winterizing composition comprising one or a plurality of polyol monoesters and/or polyol diesters,
where the proppant props open the formation after fracturing.
22 . The method of claim 21 , wherein the polyol monoesters or polyol diesters are compounds of the general formula (I):
Z(R 1 ) m (I)
where Z is a polyol having between 5 and 30 carbon atoms, R 1 is a carbyl group having between about 10 and about 40 carbon atoms, and where m is an integer having the value of 1 or 2, when m is 2, R 1 can be the same or different and one or more carbon atoms of R 1 can be replaced by B, N, O, Si, P, S, Ge and/or mixtures thereof and one or more of the hydrogen atoms in R 1 can be replaced by F, Cl, Br, I, CONR 2 2 , COOR 2 , OR 2 , NR 2 2 , SR 2 , PR 2 2 , and/or mixtures thereofand where R 2 can be a hydrogen atom, alkyl, aryl, alkylaryl or arylalkyl group having between 1-20 carbon atoms where one or more carbon or hydrogen atoms can be replaced as set forth for R 1 .
23 . The method of claim 21 , wherein the polyol monoesters or polyol diesters are compounds general formula (II):
Z′(R 1 ) m (II)
where Z′ is a sugar alcohol having between 5 and 18 carbon atoms, R 1 is a carbyl group having between about 10 and about 40 carbon atoms, and where m is an integer having the value of 1 or 2, when m is 2, R 1 can be the same or different and one or more carbon atoms of R 1 can be replaced by B, N, O, Si, P, S, Ge and/or mixtures thereof and one or more of the hydrogen atoms in R 1 can be replaced by F, Cl, Br, I, CONR 2 2 , COOR 2 , OR 2 , NR 2 2 , SR 2 , PR 2 2 , and/or mixtures thereof and where R 2 can be a hydrogen atom, alkyl, aryl, alkylaryl or arylalkyl group having between 1-20 carbon atoms where one or more carbon or hydrogen atoms can be replaced as set forth for R 1 .
24 . The method of claim 21 , wherein the polyol monoesters or polyol diesters are compounds general formula (III):
Z″(R 1 ) m (III)
where Z″ is a sugar alcohol having between 5 and 12 carbon atoms, R 1 is a carbyl group having between about 10 and about 40 carbon atoms, and where m is an integer having the value of 1 or 2, when m is 2, R 1 can be the same or different and one or more carbon atoms of R 1 can be replaced by B, N, O, Si, P, S, Ge and/or mixtures thereof and one or more of the hydrogen atoms in R 1 can be replaced by F, Cl, Br, I, CONR 2 2 , COOR 2 , OR 2 , NR 2 2 , SR 2 , PR 2 2 , and/or mixtures thereof and where R 2 can be a hydrogen atom, alkyl, aryl, alkylaryl or arylalkyl group having between 1-20 carbon atoms where one or more carbon or hydrogen atoms can be replaced as set forth for R 1 .
25 . The method of claim 21 , wherein the polyol monoesters or polyol diesters are compounds selected from the group consisting of sorbitan monooleate, sorbitan sesquioleate, sorbitan monostearate, sorbitan sesquistearate, sorbitan monolinoleate, sorbitan sequilinoleate, sorbitan monomyristoleate, sorbitan sequimyristoleate, sorbitan monopalmitoleate, sorbitan sequipalmitoleate, or mixtures and combinations thereof.
26 . A method for fracturing a formation including the step of:
pumping a fracturing fluid into a producing formation at a pressure sufficient to fracture the formation and to enhance productivity, comprising an oil based slurries including a base oil, an organophillic clay, a polar activator, a wetting agent and a winterizing composition comprising one or a plurality of polyol monoesters and/or polyol diesters, and
pumping a proppant fluid including a proppant into the fractured formation at a pressure sufficient for the proppant props open the fractures in the fractured formation.
27 . The method of claim 26 , wherein the polyol monoesters or polyol diesters are compounds of the general formula (I):
Z(R 1 ) m (I)
where Z is a polyol having between 5 and 30 carbon atoms, R 1 is a carbyl group having between about 10 and about 40 carbon atoms, and where m is an integer having the value of 1 or 2, when m is 2, R 1 can be the same or different and one or more carbon atoms of R 1 can be replaced by B, N, O, Si, P, S, Ge and/or mixtures thereof and one or more of the hydrogen atoms in R 1 can be replaced by F, Cl, Br, I, CONR 2 2 , COOR 2 , OR 2 , NR 2 2 , SR 2 , PR 2 2 , and/or mixtures thereof and where R 2 can be a hydrogen atom, alkyl, aryl, alkylaryl or arylalkyl group having between 1-20 carbon atoms where one or more carbon or hydrogen atoms can be replaced as set forth for R 1 .
28 . The method of claim 26 , wherein the polyol monoesters or polyol diesters are compounds general formula (II):
Z′(R 1 ) m (II)
where Z′ is a sugar alcohol having between 5 and 18 carbon atoms, R 1 is a carbyl group having between about 10 and about 40 carbon atoms, and where m is an integer having the value of 1 or 2, when m is 2, R 1 can be the same or different and one or more carbon atoms of R 1 can be replaced by B, N, O, Si, P, S, Ge and/or mixtures thereof and one or more of the hydrogen atoms in R 1 can be replaced by F, Cl, Br, I, CONR 2 2 , COOR 2 , OR 2 , NR 2 2 , SR 2 , PR 2 2 , and/or mixtures thereof and where R 2 can be a hydrogen atom, alkyl, aryl, alkylaryl or arylalkyl group having between 1-20 carbon atoms where one or more carbon or hydrogen atoms can be replaced as set forth for R 1 .
29 . The method of claim 26 , wherein the polyol monoesters or polyol diesters are compounds general formula (III):
Z″(R 1 ) m (III)
where Z″ is a sugar alcohol having between 5 and 12 carbon atoms, R 1 is a carbyl group having between about 10 and about 40 carbon atoms, and where m is an integer having the value of 1 or 2, when m is 2, R 1 can be the same or different and one or more carbon atoms of R 1 can be replaced by B, N, O, Si, P, S, Ge and/or mixtures thereof and one or more of the hydrogen atoms in R 1 can be replaced by F, Cl, Br, I, CONR 2 2 , COOR 2 , OR 2 , NR 2 2 , SR 2 , PR 2 2 , and/or mixtures thereof and where R 2 can be a hydrogen atom, alkyl, aryl, alkylaryl or arylalkyl group having between 1-20 carbon atoms where one or more carbon or hydrogen atoms can be replaced as set forth for R 1 .
30 . The method of claim 26 , wherein the polyol monoesters or polyol diesters are compounds selected from the group consisting of sorbitan monooleate, sorbitan sesquioleate, sorbitan monostearate, sorbitan sesquistearate, sorbitan monolinoleate, sorbitan sequilinoleate, sorbitan monomyristoleate, sorbitan sequimyristoleate, sorbitan monopalmitoleate, sorbitan sequipalmitoleate, or mixtures and combinations thereof.
31 . A method for producing comprising:
circulating and/or pumping into a well on production a fluid including an oil based slurries including a base oil, an organophillic clay, a polar activator, a wetting agent and a winterizing composition comprising one or a plurality of polyol monoesters and/or polyol diesters.
32 . The method of claim 31 , wherein the polyol monoesters or polyol diesters are compounds of the general formula (I):
Z(R 1 ) m (I)
where Z is a polyol having between 5 and 30 carbon atoms, R 1 is a carbyl group having between about 10 and about 40 carbon atoms, and where m is an integer having the value of 1 or 2, when m is 2, R 1 can be the same or different and one or more carbon atoms of R 1 can be replaced by B, N, O, Si, P, S, Ge and/or mixtures thereof and one or more of the hydrogen atoms in R 1 can be replaced by F, Cl, Br, I, CONR 2 2 , COOR 2 , OR 2 , NR 2 2 , SR 2 , PR 2 2 , and/or mixtures thereof and where R 2 can be a hydrogen atom, alkyl, aryl, alkylaryl or arylalkyl group having between 1-20 carbon atoms where one or more carbon or hydrogen atoms can be replaced as set forth for R 1 .
33 . The method of claim 31 , wherein the polyol monoesters or polyol diesters are compounds general formula (II):
Z′(R 1 ) m (II)
where Z′ is a sugar alcohol having between 5 and 18 carbon atoms, R 1 is a carbyl group having between about 10 and about 40 carbon atoms, and where m is an integer having the value of 1 or 2, when m is 2, R 1 can be the same or different and one or more carbon atoms of R 1 can be replaced by B, N, O, Si, P, S, Ge and/or mixtures thereof and one or more of the hydrogen atoms in R 1 can be replaced by F, Cl, Br, I, CONR 2 2 , COOR 2 , OR 2 , NR 2 2 , SR 2 , PR 2 2 , and/or mixtures thereof and where R 2 can be a hydrogen atom, alkyl, aryl, alkylaryl or arylalkyl group having between 1-20 carbon atoms where one or more carbon or hydrogen atoms can be replaced as set forth for R 1 .
34 . The method of claim 31 , wherein the polyol monoesters or polyol diesters are compounds general formula (III):
Z″(R 1 ) m (III)
where Z″ is a sugar alcohol having between 5 and 12 carbon atoms, R 1 is a carbyl group having between about 10 and about 40 carbon atoms, and where m is an integer having the value of 1 or 2, when m is 2, R 1 can be the same or different and one or more carbon atoms of R 1 can be replaced by B, N, O, Si, P, S, Ge and/or mixtures thereof and one or more of the hydrogen atoms in R 1 can be replaced by F, Cl, Br, I, CONR 2 2 , COOR 2 , OR 2 , NR 2 2 , SR 2 , PR 2 2 , and/or mixtures thereof and where R 2 can be a hydrogen atom, alkyl, aryl, alkylaryl or arylalkyl group having between 1-20 carbon atoms where one or more carbon or hydrogen atoms can be replaced as set forth for R 1 . . .
35 . The method of claim 31 , wherein the polyol monoesters or polyol diesters are compounds selected from the group consisting of sorbitan monooleate, sorbitan sesquioleate, sorbitan monostearate, sorbitan sesquistearate, sorbitan monolinoleate, sorbitan sequilinoleate, sorbitan monomyristoleate, sorbitan sequimyristoleate, sorbitan monopalmitoleate, sorbitan sequipalmitoleate, or mixtures and combinations thereof.
36 . A method for drilling comprising:
circulating and/or pumping into a well during drilling a fluid including an oil based slurries including a base oil, an organophillic clay, a polar activator, a wetting agent and a winterizing composition comprising one or a plurality of polyol monoesters and/or polyol diesters.
37 . The method of claim 36 , wherein the polyol monoesters or polyol diesters are compounds of the general formula (I):
Z(R 1 ) m (I)
where Z is a polyol having between 5 and 30 carbon atoms, R 1 is a carbyl group having between about 10 and about 40 carbon atoms, and where m is an integer having the value of 1 or 2, when m is 2, R 1 can be the same or different and one or more carbon atoms of R 1 can be replaced by B, N, O, Si, P, S, Ge and/or mixtures thereof and one or more of the hydrogen atoms in R 1 can be replaced by F, Cl, Br, I, CONR 2 2 , COOR 2 , OR 2 , NR 2 2 , SR 2 , PR 2 2 , and/or mixtures thereof and where R 2 can be a hydrogen atom, alkyl, aryl, alkylaryl or arylalkyl group having between 1-20 carbon atoms where one or more carbon or hydrogen atoms can be replaced as set forth for R 1 .
38 . The method of claim 36 , wherein the polyol monoesters or polyol diesters are compounds general formula (II):
Z′(R 1 ) m (II)
where Z′ is a sugar alcohol having between 5 and 18 carbon atoms, R 1 is a carbyl group having between about 10 and about 40 carbon atoms, and where m is an integer having the value of 1 or 2, when m is 2, R 1 can be the same or different and one or more carbon atoms of R 1 can be replaced by B, N, O, Si, P, S, Ge and/or mixtures thereof and one or more of the hydrogen atoms in R 1 can be replaced by F, Cl, Br, I, CONR 2 2 , COOR 2 , OR 2 , NR 2 2 , SR 2 , PR 2 2 , and/or mixtures thereof and where R 2 can be a hydrogen atom, alkyl, aryl, alkylaryl or arylalkyl group having between 1-20 carbon atoms where one or more carbon or hydrogen atoms can be replaced as set forth for R 1 .
39 . The method of claim 36 , wherein the polyol monoesters or polyol diesters are compounds general formula (III):
Z″(R 1 ) m (III)
where Z″ is a sugar alcohol having between 5 and 12 carbon atoms, R 1 is a carbyl group having between about 10 and about 40 carbon atoms, and where m is an integer having the value of 1 or 2, when m is 2, R 1 can be the same or different and one or more carbon atoms of R 1 can be replaced by B, N, O, Si, P, S, Ge and/or mixtures thereof and one or more of the hydrogen atoms in R 1 can be replaced by F, Cl, Br, I, CONR 2 2 , COOR 2 , OR 2 , NR 2 2 , SR 2 , PR 2 2 , and/or mixtures thereof and where R 2 can be a hydrogen atom, alkyl, aryl, alkylaryl or arylalkyl group having between 1-20 carbon atoms where one or more carbon or hydrogen atoms can be replaced as set forth for R 1 . . .
40 . The method of claim 36 , wherein the polyol monoesters or polyol diesters are compounds selected from the group consisting of sorbitan monooleate, sorbitan sesquioleate, sorbitan monostearate, sorbitan sesquistearate, sorbitan monolinoleate, sorbitan sequilinoleate, sorbitan monomyristoleate, sorbitan sequimyristoleate, sorbitan monopalmitoleate, sorbitan sequipalmitoleate, or mixtures and combinations thereof.