公开(公告)号：US20140087979A1

公开(公告)日：2014-03-27

申请号：US14092308

申请日：2013-11-27

Applicant: M-I L.L.C.

Inventor： Charles Svoboda ,  Raymond David Ravitz ,  Mark R. Luyster

IPC: C09K8/52

CPC classification number: C09K8/52 ,  C09K8/32 ,  C09K2208/26

Abstract: A method of cleaning a wellbore prior to the production of oil or gas, wherein the wellbore has been drilled with an invert emulsion drilling mud that forms an invert emulsion filter cake is disclosed. The method may include circulating a breaker fluid into the wellbore, where the breaker fluid includes a non-oleaginous internal phase and an oleaginous external phase, where the non-oleaginous phase includes a water soluble polar organic solvent, a hydrolysable ester of a carboxylic acid, and a weighting agent, and the oleaginous external phase includes an oleaginous fluid and an emulsifier, and where the hydrolysable ester is selected so that upon hydrolysis an organic acid is released and the invert emulsion of the filter cake breaks.

Abstract translation: 公开了一种在生产油或气体之前清洁井筒的方法，其中已经钻了井眼已经钻出了形成反相乳液滤饼的反相乳液钻井泥浆。 该方法可以包括将破坏剂流体循环到井眼中，其中破碎剂流体包括非油质内相和油质外相，其中非油质相包括水溶性极性有机溶剂，可水解的羧酸酯 和加重剂，并且所述含油外相包括油性流体和乳化剂，并且其中所述可水解酯被选择为使得在水解时释放有机酸并且所述滤饼的反转乳液破裂。

公开(公告)号：US10253241B2

公开(公告)日：2019-04-09

申请号：US14079198

申请日：2013-11-13

Applicant: M-I L.L.C.

Inventor： Charles Svoboda ,  Raymond David Ravitz ,  Mark R. Luyster

IPC: C09K8/52 ,  E21B43/00 ,  E21B37/08 ,  C09K8/32 ,  E21B37/00

Abstract: A method of cleaning a wellbore prior to the production of oil or gas is disclosed, wherein the wellbore has been drilled with an invert emulsion drilling mud that forms an invert emulsion filter cake. The method may include the steps of circulating a breaker fluid into the wellbore, where the breaker fluid includes an aqueous fluid, a water soluble polar organic solvent, a hydrolysable ester of a carboxylic acid, and a weighting age, and where the hydrolysable ester is selected so that upon hydrolysis an organic acid is released and the invert emulsion of the filter cake breaks.

公开(公告)号：US20160152884A1

公开(公告)日：2016-06-02

申请号：US14901106

申请日：2014-07-10

Applicant: M-I L.L.C.

Inventor： Raymond David Ravitz ,  Mark R. Luyster ,  Clotaire-Marie Eyaa Allogo

IPC: C09K8/52

CPC classification number: C09K8/52 ,  C09K2208/26 ,  E21B37/06

Abstract: A method may include circulating a breaker fluid into a wellbore, where the breaker fluid includes a base fluid of divalent brine having an amount of free water therein; a primary breaker; and a secondary breaker present in an amount less than the primary breaker, where the primary breaker is either a hydrolysable ester of a carboxylic acid or an iminodiacetic acid, and the secondary breaker is the other of the hydrolysable ester of a carboxylic acid or an iminodiacetic acid.

Abstract translation: 一种方法可以包括将破坏剂流体循环到井眼中，其中破碎剂流体包括其中具有一定量的游离水的二价盐水的基础流体; 主断层; 和次级破碎剂的存在量小于初级破碎剂，其中初级破碎剂是羧酸或亚氨基二乙酸的可水解酯，次级破碎剂是羧酸或亚氨基二乙酸的可水解酯中的另一种 酸。

公开(公告)号：US09085725B2

公开(公告)日：2015-07-21

申请号：US14092308

申请日：2013-11-27

Applicant: M-I L.L.C.

Inventor： Charles Svoboda ,  Raymond David Ravitz ,  Mark R. Luyster

IPC: C09K8/52 ,  C09K8/32

CPC classification number: C09K8/52 ,  C09K8/32 ,  C09K2208/26

Abstract: A method of cleaning a wellbore prior to the production of oil or gas, wherein the wellbore has been drilled with an invert emulsion drilling mud that forms an invert emulsion filter cake is disclosed. The method may include circulating a breaker fluid into the wellbore, where the breaker fluid includes a non-oleaginous internal phase and an oleaginous external phase, where the non-oleaginous phase includes a water soluble polar organic solvent, a hydrolysable ester of a carboxylic acid, and a weighting agent, and the oleaginous external phase includes an oleaginous fluid and an emulsifier, and where the hydrolysable ester is selected so that upon hydrolysis an organic acid is released and the invert emulsion of the filter cake breaks.

Abstract translation: 公开了一种在生产油或气体之前清洁井筒的方法，其中已经钻了井眼已经钻出了形成反相乳液滤饼的反相乳液钻井泥浆。 该方法可以包括将破坏剂流体循环到井眼中，其中破碎剂流体包括非油质内相和油质外相，其中非油质相包括水溶性极性有机溶剂，可水解的羧酸酯 和加重剂，并且油质外相包括油性流体和乳化剂，并且其中选择可水解酯，使得在水解时释放有机酸，并且滤饼的反转乳液破裂。