東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Austin Chalk fracture mapping using ...

Najmuddin, Ilyas Juzer.

Linked to FindBook

Google Book

Amazon

博客來

Austin Chalk fracture mapping using frequency data derived from seismic data (Texas).

Record Type:	Electronic resources : Monograph/item
Title/Author:	Austin Chalk fracture mapping using frequency data derived from seismic data (Texas)./
Author:	Najmuddin, Ilyas Juzer.
Description:	69 p.
Notes:	Source: Dissertation Abstracts International, Volume: 64-07, Section: B, page: 3153.
Contained By:	Dissertation Abstracts International64-07B.
Subject:	Geophysics. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3096748

Austin Chalk fracture mapping using frequency data derived from seismic data (Texas).
Najmuddin, Ilyas Juzer.

Austin Chalk fracture mapping using frequency data derived from seismic data (Texas). - 69 p.

Source: Dissertation Abstracts International, Volume: 64-07, Section: B, page: 3153.

Thesis (Ph.D.)--Texas A&M University, 2003.

Frequency amplitude spectra derived from P-wave seismic data can be used to derive a fracture indicator. This fracture indicator can be used to delineate fracture zones in subsurface layers.Subjects--Topical Terms:

535228
Geophysics.

Austin Chalk fracture mapping using frequency data derived from seismic data (Texas).
LDR:02794nmm 2200313 4500 001 1866083
005 20041220114121.5
008 130614s2003 eng d
035 $a (UnM)AAI3096748
035 $a AAI3096748
040 $a UnM $c UnM
100 1 $a Najmuddin, Ilyas Juzer. $3 1953498
245 1 0 $a Austin Chalk fracture mapping using frequency data derived from seismic data (Texas).
300 $a 69 p.
500 $a Source: Dissertation Abstracts International, Volume: 64-07, Section: B, page: 3153.
500 $a Chair: Joel S. Watkins.
502 $a Thesis (Ph.D.)--Texas A&M University, 2003.
520 $a Frequency amplitude spectra derived from P-wave seismic data can be used to derive a fracture indicator. This fracture indicator can be used to delineate fracture zones in subsurface layers.
520 $a Mapping fractures that have no vertical offset is difficult on seismic sections. Fracturing changes the rock properties and therefore the attributes of the seismic data reflecting off the fractured interface and data passing through the fractured layers. Fractures have a scattering effect on seismic energy reflected from the fractured layer. Fractures attenuate amplitudes of higher frequencies in seismic data preferentially than lower frequencies. The amplitude spectrum of the frequencies in the seismic data shifts towards lower frequencies when a spectrum from a time window above the fractured layer is compared with one below the fractured layer. This shift in amplitudes of frequency spectra can be derived from seismic data and used to indicate fracturing. A method is developed to calculate a parameter t* to measure this change in the frequency spectra for small time windows (100ms) above and below the fractured layer.
520 $a The Austin Chalk in South Central Texas is a fractured layer, and it produces hydrocarbons from fracture zones with the layer (Sweet Spots). 2D and 3D P-wave seismic data are used from Burleson and Austin Counties in Texas to derive the t* parameter.
520 $a Case studies are presented for 2D data from Burleson County and 3D data from Austin County. The t* parameter mapped on the 3D data shows a predominant fracture trend parallel to strike. The fracture zones have a good correlation with the faults interpreted on the top of Austin Chalk reflector.
520 $a Production data in Burleson County (Giddings Field) is a proxy for fracturing. Values of t* mapped on the 2D data have a good correlation with the cumulative production map presented in this study.
590 $a School code: 0803.
650 4 $a Geophysics. $3 535228
650 4 $a Engineering, Petroleum. $3 1018448
690 $a 0373
690 $a 0765
710 2 0 $a Texas A&M University. $3 718977
773 0 $t Dissertation Abstracts International $g 64-07B.
790 1 0 $a Watkins, Joel S., $e advisor
790 $a 0803
791 $a Ph.D.
792 $a 2003
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3096748