公开(公告)号：US20170328171A1

公开(公告)日：2017-11-16

申请号：US15155186

申请日：2016-05-16

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Courtney Payne ,  Mohan Kanaka Raju Panga ,  Stephen Davies ,  Hassan Chaabouni ,  Xuehao Tan

IPC: E21B33/138 ,  C09K8/74 ,  E21B43/25

CPC classification number: E21B33/138 ,  C09K8/516 ,  C09K8/74 ,  C09K2208/08 ,  E21B43/25 ,  E21B43/28

Abstract: Methods of treating a subterranean formation penetrated by a well bore, by diverting treatment fluid stages from zones of higher permeability to zones of lower permeability with an acid precursor material and fibers. The acid precursor material has an average particle size less than 1000 microns.

公开(公告)号：US10301903B2

公开(公告)日：2019-05-28

申请号：US15155186

申请日：2016-05-16

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Courtney Payne ,  Mohan Kanaka Raju Panga ,  Stephen Davies ,  Hassan Chaabouni ,  Xuehao Tan ,  Chidi Eugene Nwafor

IPC: E21B43/267 ,  C09K8/80 ,  E21B33/138 ,  C09K8/74 ,  E21B43/25 ,  C09K8/516 ,  E21B43/28

Abstract: Methods of treating a subterranean formation penetrated by a well bore, by diverting treatment fluid stages from zones of higher permeability to zones of lower permeability with an acid precursor material and fibers. The acid precursor material has an average particle size less than 1000 microns.

公开(公告)号：US11692128B2

公开(公告)日：2023-07-04

申请号：US15757400

申请日：2016-08-31

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Andrey Yakovlev ,  Xuehao Tan ,  Christopher Daeffler ,  Mohan Kanaka Raju Panga

IPC: E21B43/27 ,  C09K8/74 ,  C09K8/72 ,  C09K8/60 ,  E21B41/02

CPC classification number: C09K8/74 ,  C09K8/602 ,  C09K8/72 ,  E21B41/02 ,  C09K2208/30 ,  E21B43/27

Abstract: Described herein are aqueous composition(s) containing water; a viscoelastic surfactant; an acid; and a water-soluble acid retarding agent. Further described are methods of making and using such compositions.

公开(公告)号：US11414970B2

公开(公告)日：2022-08-16

申请号：US16619972

申请日：2018-06-06

Applicant: Schlumberger Technology Corporation

Inventor： Murtaza Ziauddin ,  Kevin Di Filippo ,  Xuehao Tan ,  Kin Jin Ng ,  Yi Wang

IPC: E21B43/25 ,  E21B43/27 ,  E21B49/00 ,  G01V99/00 ,  E21B37/06 ,  E21B37/00 ,  E21B47/07 ,  E21B47/10 ,  G01V3/32

Abstract: Matrix acidizing treatment are designed and performed in a manner that takes into account radial acid flow into the formation. Subterranean well characteristics are determined (e.g., mineralogical and petrophysical characteristics). One of more candidate acids is selected. A linear pore volume of acid to breakthrough (PVBT) curve is generated for each candidate acid. The linear PVBT curves are modified to account for radial acid flow. The optimal acid is selected by considering wormhole development and cost. An initial acid pumping schedule is generated for the formation to be acidized, including the optimal acid, the treatment volume and the injection rate. Computer software is used to consider the subterranean well characteristics, simulate the initial acid pumping schedule and compare results with the radial PVBT curve. The initial schedule is modified until the results are consistent with the radial PVBT curve. An acidizing treatment is then performed.