UTILIZING ELECTROMAGNETIC RADIATION TO ACTIVATE FILTERCAKE BREAKERS DOWNHOLE
申请人:Horton Amy C.
公开号:US20100263867A1
公开(公告)日:2010-10-21
A downhole wellbore filtercake breaker is disclosed comprising one or more breaker chemicals (or activators thereof) capable of being activated with radiation to form one or more breaker reaction products which in turn are capable of reacting with the filtercake to chemically break down the filtercake. There is also disclosed a conventional reservoir drilling fluid modified to include an inactive, delayed, or sequestered breaker chemical or an activator thereof, wherein the breaker chemical (or activator) may be activated directly or indirectly by radiation, such as, microwave, visible, uV, soft x-ray, or other electromagnetic radiation. Also disclosed are methods for creating these filtercakes, and then breaking them via deploying a source of radiation that can be energized proximate to the filtercake. The breaker may be regenerated downhole by reaction with the filtercake breakdown products, and subjected again to a source of radiation to continue the breakdown of filtercake.
[EN] UTILIZING ELECTROMAGNETIC RADIATION TO ACTIVATE FILTERCAKE BREAKERS DOWNHOLE<br/>[FR] UTILISATION D'UN RAYONNEMENT ÉLECTROMAGNÉTIQUE POUR ACTIVER DES DISPOSITIFS DE RUPTURE DE GÂTEAU DE FILTRATION EN FOND DE TROU
申请人:HORTON AMY C
公开号:WO2010123963A2
公开(公告)日:2010-10-28
A downhole wellbore filtercake breaker is disclosed comprising one or more breaker chemicals (or activators thereof) capable of being activated with radiation to form one or more breaker reaction products which in turn are capable of reacting with the filtercake to chemically break down the filtercake. Thre is also disclosed a conventional reservoir drilling fluid modified to include an inactive, delayed, or sequestered breaker chemical or an activator thereof, wherein the breaker chemical (or activator) may be activated directly or indirectly by radiation, such as, microwave, visible, uV, soft x-ray, or other electromagnetic radiation. Also disclosed are methods for creating these filtercakes, and then breaking them via deploying a source of radiation that can be energized proximate to the filtercake. The breaker may be regenerated downhole by reaction with the filtercake breakdown products, and subjected again to a source of radiation to continue the breakdown of filtercake.
Self-assembly of seven diamide-containing pyridinium salts via nonconventional C–H⋯O hydrogen bonding catemers
作者:An-Kai Wu、Kwang-Ming Lee
DOI:10.1039/c2ce06448k
日期:——
A series of 1-(2-amino-2-oxoethyl)-3-carbamoylpyridin-1-ium salts with different anions (Clâ, Brâ, BF4â, NO3â, OTfâ, PF6â and BPh4â) have been synthesized and characterized by single crystal X-ray diffraction. The results demonstrate that the L-shaped diamide pyridinium cations can aggregate convergently to form a tubular structure or divergently to form a one-dimensional ribbon structure or two-dimensional brick, grid and sheet structures via different hydrogen bonding catemer motifs, including conventional NâHâ¯O type (BPh4â (7)), the nonconventional NâHâ¯O types (Clâ (1)) and, the mixed NâHâ¯O/CâHâ¯O type (OTf (5) and PF6â (6)), and the interesting pure CâHâ¯O types (Clâ (1), Brâ (2) and BF4â (3)).