公开(公告)号：US20150034315A1

公开(公告)日：2015-02-05

申请号：US13955521

申请日：2013-07-31

Applicant: Schlumberger Technology Corporation

Inventor： Li Jiang ,  Bruno Lecerf ,  Murtaza Ziauddin ,  Jian He ,  Boingoc Dang

IPC: C09K8/68 ,  E21B43/267

CPC classification number: C09K8/68 ,  C09K8/725 ,  C09K8/74 ,  C09K2208/30 ,  E21B43/267

Abstract: A method includes providing an oilfield treatment fluid including an aqueous HCl solution having greater than 15% HCl by weight, and a fixing agent (FA) in a molar ratio of FA:HCl of between 0.5 and 2.5 inclusive. The FA is urea and/or a urea derivative. The oilfield treatment fluid further includes a viscosifying agent that is not a plant-based polysaccharide gum. The method further includes providing the oilfield treatment fluid to a high pressure pump, and operating the high pressure pump to treat a formation fluidly coupled to a wellbore.

Abstract translation: 一种方法包括提供一种油田处理流体，其包含重量大于15％的HCl的HCl水溶液，和FA：HCl的摩尔比在0.5和2.5之间的固定剂（FA）。 FA是尿素和/或尿素衍生物。 油田处理液还包括不是植物性多糖胶的增粘剂。 该方法还包括将油田处理流体提供给高压泵，并且操作高压泵以处理流体连接到井眼的地层。