Visual method for gelation detection
AssigneesSaudi Arabian Oil Company, Aramco Far East (Beijing) Business Services Co., Ltd.
InventorsLyla Almaskeen, Abdulkareem AlSofi, Limin Xu
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Abstract
A method includes providing a gelant including a cross-linkable polymer, a crosslinking agent and an aqueous fluid, adding one or more fluorescent rare earth elements to the gelant to provide a fluorescent gelant solution in which a fluorescence emission is quenched, and initiating crosslinking of the gelant to form a gel by heating the fluorescent gelant solution. The intensity of the fluorescence emission of the fluorescent gelant solution is monitored as an indicator of gelation status and a gelation point of the gelant may be identified based on the intensity of the fluorescent emission of the fluorescent gelant solution.
Claims19
A method comprising:
- providing a gelant that comprises a cross-linkable polymer, a crosslinking agent and an aqueous fluid;
- adding one or more rare earth elements to the gelant to provide a fluorescent gelant solution, in which a fluorescence emission is quenched;
- initiating crosslinking of the gelant to form a gel by heating the fluorescent gelant solution;
- monitoring an intensity of the fluorescence emission of the fluorescent gelant solution as an indicator of gelation status;
- and
- identifying a gelation point of the gelant based on the intensity of the fluorescent emission of the fluorescent gelant solution.
A method comprising:
- providing a gelant that comprises a cross-linkable polymer, a crosslinking agent, and an aqueous fluid;
- adding one or more water-soluble organic dyes to the gelant, thereby providing a fluorescent gelant solution;
- initiating crosslinking of the gelant to form a gel by heating the fluorescent gelant solution;
- monitoring a decrease in intensity of a fluorescence emission of the fluorescent gelant solution as an indicator of gelation status;
- and
- identifying a gelation point of the gelant based on the intensity of the fluorescence emission of the fluorescent gelant solution.
Dependencies are inferred from the claim text.