Drilling fluid additive and method

Details Drilling fluid additive and method Drilling fluid additive and method

C - Chemistry, Metallurgy

09

K

C09K 8/20 (2006.01) C09K 8/08 (2006.01) C09K 8/38 (2006.01) C09K 8/536 (2006.01)

Patent

CA 2587997

A method is provided for drilling a wellbore including the steps of: providing a drilling mud comprising a primary amine; circulating the drilling mud while the wellbore is being drilled wherein the primary amine is incorporated into a filter cake deposited on the wellbore wall as the wellbore is being drilled; and removing at least a portion of the filter cake after the wellbore is drilled by circulating fluid into the wellbore a composition comprising nitrous acid. The invention also includes the drilling fluid containing a solid component that generates gas from within the filter cake upon contact with a component that causes the solid component to generate gas. In some embodiments, the solid component is a primary amine grafted to a polymer that is not soluble in the drilling fluid composition such as a starch.

L'invention concerne un procédé de forage de puits comprenant les étapes qui consistent : à fournir une boue de forage contenant une amine primaire ; à faire circuler cette boue de forage pendant le forage du puits, l'amine primaire étant incorporée dans un gâteau de filtration déposé sur la paroi du puits pendant le forage du puits, et ; à supprimer au moins une partie du gâteau de filtration après le forage du puits, ce qui consiste à faire circuler une composition fluide contenant de l'acide nitreux dans le puits. Cette invention se rapporte en outre à un fluide de forage contenant un composant solide qui génère un gaz dans le gâteau de filtration, au contact d'un composant qui induit cette génération de gaz du composant solide. Dans certains modes de réalisation, le composant solide se présente sous la forme d'une amine primaire greffée sur un polymère qui n'est pas soluble dans la composition de fluide de forage, par exemple un amidon.

Affiliated with

Also associated with

Rating

Drilling fluid additive and method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Drilling fluid additive and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Drilling fluid additive and method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1809090