公开(公告)号：US20190138672A1

公开(公告)日：2019-05-09

申请号：US16124054

申请日：2018-09-06

Applicant: Chevron U.S.A. Inc.

Inventor： Sudipta Sarkar ,  Adwait Chawathe

IPC: G06F17/50 ,  E21B43/26

Abstract: A system and method for characterizing uncertainty in a subterranean fracture network by obtaining a natural fracture network, obtaining dynamic data, simulating hydraulic fracturing and microseismic events based on the natural fracture network and the dynamic data, generating a stimulated reservoir volume (SRV), and quantifying the uncertainty in the SRV. It may also include narrowing the uncertainty in the SRV through the use of Design of Experiment methods and characterizing the SRV using static and/or dynamic data.

公开(公告)号：US09939541B2

公开(公告)日：2018-04-10

申请号：US14593368

申请日：2015-01-09

Applicant: Chevron U.S.A. Inc.

Inventor： Chang Li ,  Sudipta Sarkar ,  Chunquan Yu

IPC: G01V1/00 ,  G01V1/28 ,  G01V1/30 ,  E21B43/26 ,  G01V1/50

CPC classification number: G01V1/288 ,  E21B43/26 ,  G01V1/282 ,  G01V1/305 ,  G01V1/50 ,  G01V2210/123 ,  G01V2210/1234 ,  G01V2210/1429 ,  G01V2210/65 ,  G01V2210/66

Abstract: A method for locating a microseismic event in a subsurface formation, in some embodiments, comprises: receiving a microseismic signal at a detector; obtaining a velocity model representative of the subsurface formation, the velocity model comprising multiple velocity layers; estimating, for each of the multiple velocity layers in the subsurface formation, a microseismic event location and a microseismic event origin time; and selecting one of the estimated locations and times using a parameter of the microseismic signal received at the detector.