Download or read book A Geologic and Hydrochemcial i e Hydrochemical Investigation of the Suitability of Central Utah s Navajo Sandstone for the Disposal of Saline Process Water and CO2 written by Kevin Lewis Randall and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Salt water is produced from the Ferron Sandstone Member of the Mancos Shale in central Utah as part of the production of coalbed methane (CBM) and is disposed of by injection predominantly into the Navajo Sandstone between 4,500 feet to 7,300 feet and is considered to be a hazardous waste. Local government agencies are concerned about the potential impacts on shallow groundwater because of this disposal method. Water samples were gathered from four shallow water-supply wells, and nine salt water disposal (SWD) wells to compare hydrochemistries as an indicator of potential mixing. Shallow water-supply wells are likely recharged by local precipitation while the source of CO2 is from atmospheric and/or soil CO2 gas and comparatively, are low in total dissolved solids. Carbonate mineral dissolution is the source of CO2 in the SWD wells and is exceptionally high in TDS. The SWD water appears to be old water and displays an evaporative signature. A geologic analysis was conducted for the Drunkards Wash gas field using 479 digital gas well logs. Three subsurface faults were identified with one fault in the north and the other two in the central part of the gas field near the eastern and western flanks. These faults were further confirmed by comparing average monthly gas and water production from the first 24 months in these faulted areas to adjacent control areas. Areas near faults reveal two to six times greater gas production than that of the associated control areas, and water production is greater by nearly an order of magnitude. This difference is likely due to the fracturing associated with the damage zone near the faults allowing for increased flow of gas and water. Due to the high injection pressures the vertical hydraulic gradient has been reversed from downward to upward. However, due to the thick sequences of shale separating the disposal aquifers and the shallow aquifers the estimated time required for the disposal waters to migrate to the surface would be at least 2,000 years. I conclude that the saline waters produced from the Ferron Sandstone are being safely sequestered in deeply buried, extensive and geologically-sealed aquifers.

Download or read book Ground Water Conditions in the Navajo Sandstone in the Central Virgin River Basin Utah Classic Reprint written by R. M. Cordova and published by Forgotten Books. This book was released on 2017-11-18 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Ground-Water Conditions in the Navajo Sandstone in the Central Virgin River Basin, Utah Drainage is by the Virgin River and its tributaries, which are part of the Colorado system. The Virgin River is perennial, and its tributaries are perennial, intermittent, or ephemeral. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Download or read book The Geochemistry of Natural Waters written by James I. Drever and published by . This book was released on 1997 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt: An examination of both theoretical and practical approaches to the geochemistry of natural waters with a more tightly focused emphasis on fresh-water environments. The third edition focuses more on environmental issues than the previous edition, reflecting the importance on environmental geochemistry as a result of increased environmental awareness and regulatory requirements. Prepares readers to interpret the probable cause of a particular water composition and to predict the probable water chemistry in those situations where data do not exist.

Download or read book Geological Prior Information written by Andrew Curtis and published by . This book was released on 2004 with total page 229 pages. Available in PDF, EPUB and Kindle. Book excerpt: Geological prior information represents a new and emerging field within the geosciences. Prior information is the term used to describe previously existing knowledge that can be brought to bear on a new problem. This volume describes a range of methods that can be used to find solutions to practical and theoretical problems using geological prior information, and the nature of geological information that can be so employed.