公开(公告)号：US20230183547A1

公开(公告)日：2023-06-15

申请号：US17643703

申请日：2021-12-10

Applicant: Schlumberger Technology Corporation

Inventor： Bipin Jain ,  Shameed Ashraf

IPC: C09K8/473 ,  C09K8/48 ,  C04B28/04 ,  C04B22/06 ,  C04B24/26 ,  C04B24/42 ,  C04B24/30 ,  C04B24/38 ,  C04B14/36 ,  E21B33/14

CPC classification number: C09K8/473 ,  C09K8/48 ,  C04B28/04 ,  C04B22/064 ,  C04B24/2611 ,  C04B24/42 ,  C04B24/30 ,  C04B24/38 ,  C04B14/368 ,  E21B33/14 ,  C04B2103/408

Abstract: The effectiveness of expansive cement systems may be diluted when, during a well cementing operation, commingling takes place between the cement slurry and a spacer fluid, a drilling fluid, or both. Incorporating expansive agents in the spacer fluid or drilling fluid may reduce or negate the loss of expansion at the cement slurry/spacer interface or the cement slurry/drilling fluid interface, thereby promoting zonal isolation throughout the cemented interval.

公开(公告)号：US20230183544A1

公开(公告)日：2023-06-15

申请号：US17643701

申请日：2021-12-10

Applicant: Schlumberger Technology Corporation

Inventor： Bipin Jain ,  Shameed Ashraf

IPC: C09K8/40 ,  C09K8/36 ,  C09K8/467 ,  C09K8/42

CPC classification number: C09K8/40 ,  C09K8/36 ,  C09K8/467 ,  C09K8/424

Abstract: The effectiveness of expansive cement systems may be diluted when, during a well cementing operation, commingling takes place between the cement slurry and a spacer fluid, a drilling fluid, or both. Incorporating expansive agents in the spacer fluid or drilling fluid may reduce or negate the loss of expansion at the cement slurry/spacer interface or the cement slurry/drilling fluid interface, thereby promoting zonal isolation throughout the cemented interval.

公开(公告)号：US11187057B2

公开(公告)日：2021-11-30

申请号：US15750242

申请日：2015-08-05

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Bipin Jain

IPC: E21B33/14 ,  C04B28/04 ,  C09K8/467 ,  C04B28/18 ,  C04B28/34 ,  E21B43/26 ,  C04B28/32 ,  C04B28/00 ,  C04B28/14 ,  E21B33/138 ,  C04B28/06 ,  C04B24/26 ,  C04B103/00 ,  C04B103/46

Abstract: Expansive cements for use in cementing subterranean wells comprise water, an inorganic cement and one or more particulate materials that swell upon contact with a water immiscible fluid. The cements may further comprise a water immiscible fluid. Such cements are designed to seal microannuli arising from the presence of water immiscible fluids on casing surfaces, borehole wall surfaces or both.

公开(公告)号：US11186760B2

公开(公告)日：2021-11-30

申请号：US15779163

申请日：2015-11-26

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Diankui Fu ,  Bipin Jain ,  Soo Hui Goh

IPC: E21B37/00 ,  C09K8/536 ,  C09K8/52 ,  C09K8/08 ,  C09K8/42 ,  C09K8/528 ,  E21B33/14 ,  E21B37/10

Abstract: Aqueous fluids containing hydrophobic particles are effective media for cleaning water-base drilling fluids and drilling fluid solids from the interior surface of a casing string. Hydrophobic fibers may be added to a drilling fluid, a spacer fluid, a sacrificial spacer fluid, a chemical wash, or combinations thereof. The disclosed fluids may be employed during primary cementing operations where it is not possible to use a bottom plug.

公开(公告)号：US10655043B2

公开(公告)日：2020-05-19

申请号：US15752018

申请日：2015-08-11

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Diankui Fu ,  Bipin Jain

IPC: C09K8/52 ,  E21B37/00 ,  E21B33/14 ,  C09K8/40 ,  C09K8/467 ,  C04B28/02 ,  E21B37/06

Abstract: Aqueous fluids containing hydrophobic particles are effective media for cleaning water-base drilling fluids and drilling fluid solids from the interior surface of a casing string. Hydrophobic fibers may be added to a drilling fluid, a spacer fluid, a chemical wash, or combinations thereof. The disclosed fluids may be employed during primary cementing operations where it is not possible to use a bottom plug.