公开(公告)号：US12130399B2

公开(公告)日：2024-10-29

申请号：US18045656

申请日：2022-10-11

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Brent D. Wheelock ,  Peter A. Gordon ,  Limin Song ,  Kenneth W. Desmond ,  Yibing Zhang

IPC: G01V1/50 ,  E21B43/26 ,  E21B47/26 ,  E21B49/00 ,  G01V1/137 ,  G01V1/46

CPC classification number: G01V1/50 ,  E21B47/26 ,  E21B49/00 ,  G01V1/137 ,  G01V1/46 ,  E21B43/26 ,  G01V2210/646

Abstract: Methods and systems for measuring cluster efficiency for stages of wellbores are provided herein. One method includes selecting a frequency band for generating broadband tube waves within the fluid column of the wellbore and generating the broadband tube waves within the fluid column of the wellbore using a pressure pulse generator that is hydraulically coupled to the wellbore. The method also includes recording data corresponding to the broadband tube waves and reflected broadband tube waves using pressure receivers that are hydraulically coupled to the wellbore. The pressure receivers are arranged into arrays with two or more pressure receivers in each array. The data recorded by the pressure receivers relate to characteristics of reflectors (including perforation cluster/fracture interfaces) within the wellbore. The method further includes processing the recorded data using interferometry and performing full waveform inversion(s) on the processed data to determine frequency-dependent, complex-valued reflection coefficients at each perforation cluster/fracture interface.

公开(公告)号：US11573108B2

公开(公告)日：2023-02-07

申请号：US16782398

申请日：2020-02-05

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Kenneth W. Desmond ,  Gary L. Hunter

IPC: G01F1/7084 ,  G01F1/7088 ,  G01F1/704 ,  G01F1/7082 ,  G01F1/712

Abstract: Provided herein are improved methods for estimating the flow velocity of a fluid in a vessel. Systems and methods are provided herein related to making and/or refining velocity measurements for flowing fluids, both single and multi-phase fluids, in vessels, such as pipes or conduits, utilizing contrast media property agent variations. In one aspect, this disclosure provides a method of determining a flow velocity of a fluid flow in a vessel including: providing a fluid flow having contrast media, the contrast media having a contrast media property variation; providing a detectable signal corresponding to the contrast media property variation; collecting the detectable signal at an upstream receiver to produce a first received signal; collecting the detectable signal at a downstream receiver to produce a second received signal, the downstream receiver being located downstream of the upstream receiver at a distance (L); filtering the first received signal and the second received signal through a contrast media variant filter to produce a first filtered signal and a second filtered signal; cross-correlating the first filtered signal and the second filtered signal to determine a time shift (Δt) between the first filtered signal and the second filtered signal; and estimating the velocity of the fluid flow using this relationship vflow=L/Δt.