80th Texas Legislature, Regular Session, House Bill 1401, Chapter 469 (open access)

80th Texas Legislature, Regular Session, House Bill 1401, Chapter 469

Bill introduced by the Texas House of Representatives relating to the powers and duties of the Harris County Municipal Utility District No. 402 regarding road projects; providing authority to impose a tax and issue bonds.
Date: 2007-04/2007-06
Creator: Texas. Legislature. House of Representatives.
Object Type: Legislative Document
System: The Portal to Texas History
80th Texas Legislature, Regular Session, House Bill 1694, Chapter 1358 (open access)

80th Texas Legislature, Regular Session, House Bill 1694, Chapter 1358

Bill introduced by the Texas House of Representatives relating to the boundaries of the Airline Improvement District in Harris County.
Date: 2007-04/2007-06
Creator: Texas. Legislature. House of Representatives.
Object Type: Legislative Document
System: The Portal to Texas History
Borehole Seismic Monitoring of Injected CO2 at the Frio Site (open access)

Borehole Seismic Monitoring of Injected CO2 at the Frio Site

As part of a small scale sequestration test (about 1500 tonsof CO2) in a saline aquifer, time-lapse borehole seismic surveys wereconducted to aid in characterization of subsurface CO2 distribution andmaterial property changes induced by the injected CO2. A VSP surveydemonstrated a large increase (about 75 percent) in seismic reflectivitydue to CO2 injection and allowed estimation of the spatial extent of CO2induced changes. A crosswell survey imaged a large seismic velocitydecrease (up to 500 m/s) within the injection interval and provided ahigh resolution image of this velocity change which maps the subsurfacedistribution of CO2 between two wells. Numerical modeling of the seismicresponse uses the crosswell measurements to show that this small CO2volume causes a large response in the seismic reflectivity. This resultdemonstrates that seismic detection of small CO2 volumes in salineaquifers is feasible and realistic.
Date: April 21, 2006
Creator: Daley, Thomas M.; Myer, Larry R.; Hoversten, G.M.; Peterson, JohnE. & Korneev, Valeri A.
Object Type: Article
System: The UNT Digital Library
Focus, April 2002 (open access)

Focus, April 2002

Newsletter of the Lee College continuing education program for senior citizens discussing news and events, announcements related to the program, and other information of interest to participants.
Date: April 2002
Creator: Lee College (Baytown, Tex.). Continuing Education.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History