公开(公告)号：US11685858B2

公开(公告)日：2023-06-27

申请号：US17331252

申请日：2021-05-26

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Xiangdong Qiu ,  Dominic Joseph Brady ,  Ziad Al-Jalal ,  Mohan Kanaka Raju Panga ,  Christopher Daeffler

IPC: C09K8/72 ,  C09K8/82

CPC classification number: C09K8/725 ,  C09K8/72 ,  C09K8/82 ,  C09K2208/32

Abstract: Described herein are methods for treating a subterranean formation penetrated by a wellbore with a retarded acidizing fluid containing an acid and an acid retarding agent, the concentrations of which are adjusted based on measured parameter values of the formation. Also described is a method for treating a subterranean formation by introducing an acid to the formation following the introduction of an acid retarding agent to the formation. Also described is a method for acid fracturing a subterranean formation including reducing the concentration of an acid retarding agent contained in a retarded acidizing fluid over the course of the acid fracturing operation.

公开(公告)号：US20210277302A1

公开(公告)日：2021-09-09

申请号：US17331252

申请日：2021-05-26

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Xiangdong Qiu ,  Dominic Joseph Brady ,  Ziad Al-Jalal ,  Mohan Kanaka Raju Panga ,  Christopher Daeffler

IPC: C09K8/72 ,  C09K8/82

Abstract: Described herein are methods for treating a subterranean formation penetrated by a wellbore with a retarded acidizing fluid containing an acid and an acid retarding agent, the concentrations of which are adjusted based on measured parameter values of the formation. Also described is a method for treating a subterranean formation by introducing an acid to the formation following the introduction of an acid retarding agent to the formation. Also described is a method for acid fracturing a subterranean formation including reducing the concentration of an acid retarding agent contained in a retarded acidizing fluid over the course of the acid fracturing operation.

公开(公告)号：US20190310237A1

公开(公告)日：2019-10-10

申请号：US15946729

申请日：2018-04-05

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Xiangdong Qiu ,  Abdul Muqtadir Mohammed ,  Mustapha Abbad ,  Reza Taherian

IPC: G01N33/24 ,  G01N27/12 ,  G01N27/07 ,  E21B49/02 ,  E21B49/08

Abstract: In an embodiment a method is described which includes emplacing a sample within a measurement cell, wherein two or more electrodes are configured in the measurement cell; introducing a reactive fluid into the measurement cell; reacting the sample with the reactive fluid, wherein reacting the sample with the reactive fluid results in a change in an ion concentration in the reactive fluid; and measuring the resistivity of the reactive fluid using the two or more electrodes, wherein the resistivity is proportional to the ion concentration in the reactive fluid.

公开(公告)号：US09529112B2

公开(公告)日：2016-12-27

申请号：US14251419

申请日：2014-04-11

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Xiangdong Qiu ,  Stephen John Remane Dyer ,  Reza Taherian

IPC: G01V3/28 ,  G01N33/24

CPC classification number: G01V3/28 ,  G01N33/24

Abstract: A chemical stimulation system and a resistivity tool are disposed in a wellbore. Chemical stimulation operations are performed in the wellbore using the chemical stimulation system. Resistivity measurements are made with the resistivity tool before, during, and/or after the chemical stimulation operations. The resistivity measurements may be used to determine the porosity of a formation penetrated by the wellbore. A wormhole distribution and/or penetration in the formation is determined based on the resistivity measurements. Decisions regarding stimulation operations are made based on the determined wormhole distribution and/or penetration. The resistivity tool may be modular and have various arrays allowing various depths of investigation. The depths of penetration of the wormholes into the formation may be determined using the measurements from the multiple depths of investigation. The volume of the formation that is dissolved by the chemical stimulation operations may also be estimated.

Abstract translation: 化学刺激系统和电阻率工具设置在井眼中。 使用化学刺激系统在井筒中进行化学刺激操作。 在化学刺激操作之前，期间和/或之后，使用电阻率工具进行电阻率测量。 电阻率测量可用于确定井眼渗透的地层的孔隙度。 基于电阻率测量确定地层中的虫洞分布和/或穿透。 基于确定的虫洞分布和/或穿透度进行关于刺激操作的决定。 电阻率工具可以是模块化的并且具有允许各种调查深度的各种阵列。 可以使用来自多个调查深度的测量来确定虫洞进入地层的深度。 也可以估计通过化学刺激操作溶解的地层的体积。