公开(公告)号：US20240003763A1

公开(公告)日：2024-01-04

申请号：US17854926

申请日：2022-06-30

Applicant: ARAMCO SERVICES COMPANY

Inventor： Seth Busetti ,  Harold Merry

IPC: G01L1/24

CPC classification number: G01L1/242

Abstract: A method for measuring a strain field involves determining an expected source mechanism of the strain field, based on the expected source mechanism, estimating strain field tensors of the strain field in an area of interest, determining principal strain vectors from the strain field tensors, identifying the most extensional principal strain vectors, ε3, from the principal strain vectors, establishing a trajectory of a fiber optic path through the area of interest, discretizing the fiber optic path to obtain directions of fiber axial strain, εa, comparing εa against ε3, and based on the comparison, optimizing the fiber optic path for an alignment of εa with ε3.

公开(公告)号：US12242009B2

公开(公告)日：2025-03-04

申请号：US18063010

申请日：2022-12-07

Applicant: ARAMCO SERVICES COMPANY

Inventor： Vladimir Kazei ,  Konstantin Osypov ,  Harold Merry

IPC: G01H9/00 ,  G01V1/22 ,  G01V1/42

Abstract: A method and system for measuring strain rate at a scale shorter than gauge length are disclosed. The method includes deploying a plurality of discrete seismic receivers and a distributed acoustic system (DAS) in a borehole extending into a formation. The method further includes obtaining a first DAS measurement (DAS1) between a first position and a second position, obtaining a second DAS measurement (DAS2) between a third position and a fourth position, and obtaining a discrete seismic receiver measurement between the second position and the fourth position. The method further includes determining an DAS equivalent discrete measurement (DASeq) from the discrete seismic receiver measurement, determining a sub-gauge DAS measurement (DASsg) based, at least in part, on the first DAS measurement, the second DAS measurement and the DAS equivalent discrete measurement, and determining mechanical characteristics of the formation based, at least in part, on the sub-gauge DAS measurement.

公开(公告)号：US20240192396A1

公开(公告)日：2024-06-13

申请号：US18063010

申请日：2022-12-07

Applicant: ARAMCO SERVICES COMPANY

Inventor： Vladimir Kazei ,  Konstantin Osypov ,  Harold Merry

IPC: G01V1/42 ,  G01H9/00 ,  G01V1/22

CPC classification number: G01V1/42 ,  G01H9/006 ,  G01V1/226 ,  G01V2210/121 ,  G01V2210/1429

Abstract: A method and system for measuring strain rate at a scale shorter than gauge length are disclosed. The method includes deploying a plurality of discrete seismic receivers and a distributed acoustic system (DAS) in a borehole extending into a formation. The method further includes obtaining a first DAS measurement (DAS1) between a first position and a second position, obtaining a second DAS measurement (DAS2) between a third position and a fourth position, and obtaining a discrete seismic receiver measurement between the second position and the fourth position. The method further includes determining an DAS equivalent discrete measurement (DASeq) from the discrete seismic receiver measurement, determining a sub-gauge DAS measurement (DASsg) based, at least in part, on the first DAS measurement, the second DAS measurement and the DAS equivalent discrete measurement, and determining mechanical characteristics of the formation based, at least in part, on the sub-gauge DAS measurement.

公开(公告)号：US20250123137A1

公开(公告)日：2025-04-17

申请号：US18485054

申请日：2023-10-11

Applicant: ARAMCO SERVICES COMPANY

Inventor： Vladimir Kazei ,  Harold Merry ,  Seth Busetti ,  Ezzedeen Alfataierge

IPC: G01H9/00 ,  E21B47/07 ,  G01V1/22

Abstract: A method includes providing a distributed acoustic sensing (DAS) system and a fiber sample. The DAS system includes a chamber and a signal generator positioned proximate to and outside the chamber. The method further includes manipulating the fiber sample into a desired shape, filling the chamber with a freezable liquid, wherein the freezable liquid is provided at room temperature, and placing the fiber sample into the chamber. The method also includes recording a first set of room temperature baseline measurements, freezing the freezable liquid, and recording a first set of frozen baseline measurements. The method further includes performing strain-sensing measurements while the signal generator is active, and melting the freezable liquid.

公开(公告)号：US20240201032A1

公开(公告)日：2024-06-20

申请号：US18066019

申请日：2022-12-14

Applicant: ARAMCO SERVICES COMPANY

Inventor： Seth Busetti ,  Arpita Bathija ,  Harold Merry

IPC: G01L1/24 ,  E21B47/01 ,  E21B47/135 ,  G01K11/3206

CPC classification number: G01L1/242 ,  E21B47/01 ,  E21B47/135 ,  G01K11/3206

Abstract: A system includes a plug standard formed of a geomaterial, a fiber optic cable and a support lattice embedded within the plug standard, and a joint attached to an end of the fiber optic cable outside of the plug standard. The fiber optic cable captures at least strain measurements and temperature measurements of the plug standard. The support lattice supports the fiber optic cable within the plug standard, and the joint connects the fiber optic cable with a fiber optic interrogator.