National Assessment of Oil and Gas Quarter-Mile Cells - Upper Cretaceous Taylor and Navarro Groups, Western Gulf Province (047)

Cell maps for each oil and gas assessment unit were created by the USGS to illustrate the degree of exploration, type of production, and distribution of production in an assessment unit or province. Each cell represents a quarter-mile square of the land surface, and the cells are coded to represent whether the wells included within the cell are predominantly oil-producing, gas-producing, both oil and gas-producing, dry, or the type of production of the wells located within the cell is unknown. The well information was initially retrieved from the IHS Energy Group, PI/Dwights PLUS Well Data on CD-ROM, which is a proprietary, commercial database containing information for most oil and gas wells in the U.S. Cells were developed as a graphic solution to overcome the problem of displaying proprietary PI/Dwights PLUS Well Data. No proprietary data are displayed or included in the cell maps. The data from PI/Dwights PLUS Well Data are current as of 2003.

美国地质调查局（USGS）为每个油气评价单元（oil and gas assessment unit）制作了单元格地图，用以展示对应评价单元或含油气省内的勘探程度、生产类型以及产能分布状况。每个单元格代表地表上四分之一平方英里的区域，其编码用于标识该单元格内的油井以原油生产为主、天然气生产为主、兼具油气生产、为干井，或是单元格内油井的生产类型未知。该井数据最初来源于IHS能源集团的光盘版PI/Dwights PLUS油井数据库，这是一个专有商业数据库，收录了美国绝大多数油气井的相关信息。制作此类单元格地图，旨在解决专有PI/Dwights PLUS油井数据库的展示难题，且所有单元格地图均未包含或展示任何专有数据。PI/Dwights PLUS油井数据库的数据截至2003年为最新状态。