公开(公告)号：US20170342814A1

公开(公告)日：2017-11-30

申请号：US15453584

申请日：2017-03-08

Applicant: CONOCOPHILLIPS COMPANY

Inventor： Kyle R. KRUEGER ,  Ge JIN ,  Charles C. MOSHER ,  Herbert W. SWAN ,  Baishali ROY

IPC: E21B43/17 ,  G01V1/30 ,  E21B43/26 ,  E21B47/12 ,  G06T17/05 ,  G01V1/48

CPC classification number: E21B43/17 ,  E21B43/26 ,  E21B47/102 ,  E21B47/123 ,  G01H9/004 ,  G01V1/226 ,  G01V1/30 ,  G01V1/308 ,  G01V1/42 ,  G01V1/48 ,  G01V2210/1429 ,  G01V2210/624 ,  G06T17/05

Abstract: A workflow using techniques for improving signal-to-noise ratio and decreasing interferences for Low-Frequency Distributed Acoustic Sensing is described.

公开(公告)号：US20250052150A1

公开(公告)日：2025-02-13

申请号：US18774045

申请日：2024-07-16

Applicant: CONOCOPHILLIPS COMPANY

Inventor： Herbert W. SWAN

IPC: E21B49/00 ,  E21B43/26 ,  E21B47/06

Abstract: Water hammer is oscillatory pressure behavior in a wellbore resulting from the inertial effect of flowing fluid being subjected to an abrupt change in velocity. It is commonly observed at the end of large-scale hydraulic fracturing treatments after fluid injection is rapidly terminated. Factors affecting treatment-related water hammer behavior are disclosed and field studies are introduced correlating water hammer characteristics to fracture intensity and well productivity.

公开(公告)号：US20220307371A1

公开(公告)日：2022-09-29

申请号：US17669155

申请日：2022-02-10

Applicant: CONOCOPHILLIPS COMPANY

Inventor： Herbert W. SWAN

IPC: E21B49/00 ,  E21B47/06 ,  E21B43/26

Abstract: Water hammer is oscillatory pressure behavior in a wellbore resulting from the inertial effect of flowing fluid being subjected to an abrupt change in velocity. It is commonly observed at the end of large-scale hydraulic fracturing treatments after fluid injection is rapidly terminated. Factors affecting treatment-related water hammer behavior are disclosed and field studies are introduced correlating water hammer characteristics to fracture intensity and well productivity.

公开(公告)号：US20180045040A1

公开(公告)日：2018-02-15

申请号：US15453730

申请日：2017-03-08

Applicant: CONOCOPHILLIPS COMPANY

Inventor： Herbert W. SWAN ,  Ge JIN ,  Kyle R. KRUEGER ,  Baishali ROY

IPC: E21B47/12 ,  G01F1/66 ,  E21B47/06 ,  E21B47/10

CPC classification number: G06F19/00 ,  E21B47/02 ,  E21B47/102 ,  G01H9/004

Abstract: A system and method for monitoring oil flow rates along a producing oil or gas well using a Distributed Acoustic Sensing fiber is described. This system uses the low-frequency component of the acoustic signal as a measurement of temperature variations within the well. The relative flow contributions can then be inferred from these temperature fluctuations.

公开(公告)号：US20170260846A1

公开(公告)日：2017-09-14

申请号：US15453216

申请日：2017-03-08

Applicant: CONOCOPHILLIPS COMPANY

Inventor： Ge JIN ,  Herbert W. SWAN ,  Baishali ROY ,  Kyle R. KRUEGER

IPC: E21B47/06 ,  G01B11/16 ,  G01K11/32

CPC classification number: E21B47/065 ,  E21B47/101 ,  E21B47/102 ,  G01B11/161 ,  G01H9/004 ,  G01K11/32

Abstract: This disclosure describes a method of combining DAS and DTS data to accurately estimate borehole temperature. The described method takes advantage of the thermal sensitivity of DAS signal in the low-frequency band, and combines with the absolute temperature measurement from DTS, to produce a distributed temperature estimation that is up to 10000 more accurate than the current commercial solution. The DAS and DTS data should be record simultaneously at the same well. The DAS data are first low-pass filtered and then converted into temperature variation measurement. Then an accurate temperature estimation is obtained by fitting both DTS and DAS data.