公开(公告)号：US20170158505A1

公开(公告)日：2017-06-08

申请号：US15438272

申请日：2017-02-21

Applicant: Schlumberger Technology Corporation

Inventor： Li Jiang ,  Bruno Lecerf ,  Timothy G. J. Jones ,  Richard Donald Hutchins ,  Murtaza Ziauddin ,  Andrey Mirakyan ,  Jian He ,  Chad Kraemer

IPC: C01B7/01

Abstract: An aqueous solution includes HCl present in an amount exceeding 37% by weight. The solution further includes a fixing agent that is urea and/or a urea derivative. The fixing agent is present in the solution in a molar ratio of between 0.25 and 2.0 of fixing agent to HCl, inclusive.

公开(公告)号：US20150122499A1

公开(公告)日：2015-05-07

申请号：US14072437

申请日：2013-11-05

Applicant: Schlumberger Technology Corporation

Inventor： Li Jiang ,  Bruno Lecerf ,  Timothy G.J. Jones ,  Murtaza Ziauddin ,  Richard Hutchins ,  Jian He ,  Jack Li ,  Chad Kraemer

IPC: C09K8/52 ,  E21B43/28

CPC classification number: C09K8/52 ,  C09K8/54 ,  C09K2208/32

Abstract: Oilfield treatment compositions contain water, hydrochloric acid at a concentration between 15 wt % and 45.7 wt % and a first fixing agent. The first fixing agent comprises urea, a urea derivative or both. The molar ratio between the first fixing agent and water may be higher than or equal to 0.5, and urea is the dominant solvent species in the compositions. In these compositions the first fixing agent provides corrosion inhibition when exposed to steel. The compositions may also contain a second fixing agent and an inhibitor aid.

Abstract translation: 油田处理组合物含有浓度为15重量％至45.7重量％之间的水，盐酸和第一固定剂。 第一固定剂包括尿素，尿素衍生物或二者。 第一固定剂和水之间的摩尔比可以高于或等于0.5，脲是组合物中主要的溶剂种类。 在这些组合物中，当暴露于钢时，第一固定剂提供腐蚀抑制。 组合物还可以含有第二固定剂和抑制剂助剂。

公开(公告)号：US20150122485A1

公开(公告)日：2015-05-07

申请号：US14072395

申请日：2013-11-05

Applicant: Schlumberger Technology Corporation

Inventor： Li Jiang ,  Bruno Lecerf ,  Timothy G.J. Jones ,  Murtaza Ziauddin ,  Richard Hutchins ,  Jian He ,  Jack Li ,  Chad Kraemer

IPC: C09K8/52 ,  E21B41/02

CPC classification number: C09K8/54 ,  C09K2208/32 ,  C23F11/04 ,  E21B41/02 ,  E21B43/26 ,  E21B43/28

Abstract: Oilfield treatment compositions contain water, hydrochloric acid at a concentration between 15 wt % and 45.7 wt % and a first and second fixing agent. The first fixing agent comprises urea, a urea derivative or both. The second fixing agent may be a mixture or amines and alcohols. These compositions provide corrosion inhibition when exposed to steel. The compositions may also contain an inhibitor aid.

Abstract translation: 油田处理组合物含有浓度为15重量％至45.7重量％之间的水，盐酸和第一和第二固定剂。 第一固定剂包括尿素，尿素衍生物或二者。 第二固定剂可以是混合物或胺和醇。 这些组合物当暴露于钢时提供腐蚀抑制作用。 组合物还可以含有抑制剂助剂。