Comprehensive geological and production data for Henderson County, Texas oil fields including Trinidad South Rodessa Formation

Volume of gas and oil produced, vented and flared by Texas county from 2010-2015

The extensive development of oil and natural-gas resources in south Texas during the past 10 years has led to questions regarding possible environmental effects of processes associated with oil and natural-gas production, in particular the process of hydraulic fracturing, on water and other natural resources. Part of the lower San Antonio River watershed intersects an area of oil and natural-gas production from the sedimentary rocks that compose the Eagle Ford Group. The rapid expansion of infrastructure associated with oil and natural-gas production increases potential pathways for inorganic and organic contaminants to enter surface-water systems. The U.S. Geological Survey, in cooperation with the San Antonio River Authority, analyzed geospatial data from different years (2008 and 2015) to evaluate changes in land cover associated with oil and natural-gas production activities in the lower San Antonio River watershed. Additionally, during 2015-17 surface-water samples collected from 5 sites and streambed-sediment samples collected from 17 sites in the lower San Antonio River watershed were analyzed for a broad range of constituents that might be associated with oil and natural-gas production.

ExxonMobil ranks first among the United States' top ten oil and gas producing companies based on market capitalization. As of June 18, 2025, the Texas-based oil supermajor had a market cap of ****** billion U.S. dollars. ExxonMobil can not only trace its roots back to the early years of commercial oil production, it has also become one of the largest oil and gas companies in the world. It is active in all areas of the supply chain, from hydrocarbon extraction to retailing of gasoline. What is market cap? As opposed to sales or assets, market capitalization is a metric used to determine a company’s size by the worth of their outstanding shares on the stock market. ExxonMobil often ranks as the leading oil and gas company based on market cap worldwide. However, its net income is often significantly lower than that of state-owned entities such as Saudi Aramco. The differing ratios exemplify how market cap is not a hard figure like net profits, but inflates and fluctuates according to the perceived value of a company, influenced by less quantifiable factors. The role of oil and gas in the world economy The oil and gas industry is involved in exploration, extraction, refining, transport, and marketing of hydrocarbons. Many industries are extremely dependent on oil and gas products, mostly in the form of fuels or raw materials for chemical products. The oil and gas industry is one of the largest worldwide, and it would follow that companies involved within the industry are among the top companies worldwide by revenue.

Groundwater samples were collected from domestic and public-supply wells in the Eagle Ford study area in 2015–16, in the Fayetteville study area in 2015, and in the Haynesville study area in 2014–15. One sample of produced water was collected from a gas well in the Haynesville Shale in Rusk County, Texas in 2010, and 5 samples of produced water were collected from oil and condensate wells in the Eagle Ford Shale in Gonzales and Lavaca Counties, Texas in 2015. Groundwater samples were analyzed for major ions, nutrients, and trace elements; methane, methane H and C isotopic compositions, and C1-C5 gas composition; H and O isotopic composition of water; noble gas concentrations and isotopic compositions; tritium, sulfur hexafluoride (SF6), and carbon-14 in dissolved inorganic carbon (DIC), and δ13C-DIC; and volatile organic compounds (VOCs). Water from hydrocarbon wells was analyzed for a subset of these constituents.

The files in this folder contain data that were used in: Roest, Geoffrey and Gunnar Schade: Quantifying alkane emissions in the Eagle Ford Shale using boundary layer enhancement, Atmos. Chem. Phys., available via https://doi.org/10.5194/acp-2016-861, 2017. The contents are as follows: cdumpYYMMDD_20hr.txt: See NOTE below. concplot_YYMMDD.ps: See NOTE below. enhancement.csv: Averaged afternoon (15:00 - 18:00 LST) alkane mixing ratios at Floresville and Oak Park for days used in this study. Also contains averaged afternoon winds and temperature at Floresville, width of upwind area, and long-term gas production in upwind area. floresville_daily.csv: 24-hour averaged meteorology and hydrocarbon data at the Floresville site. floresville_hourly.csv: 1-hour meteorology and hydrocarbon data at the Floresville site. long_term_trends.csv: Hydrocarbon data at several TCEQ sites used to assess long-term trends in alkane mixing ratios over SE Texas. oakpark_daily.csv: 24-hour averaged hydrocarbon data at the Oak Park site. oakpark_hourly.csv: 1-hour hydrocarbon data at the Oak Park site. partplotYYMMDD.ps: See NOTE below. production.csv: Total oil and gas production data for each county in Texas expressed as a sum of production from July 2013 through December 2015. NOTE: Each file has a corresponding metadata file, except for the cdumpYYMMDD_20hr.txt, concplot_YYMMDD.ps, and partplotYYMMDD.ps files. These three file types are outputs of the PC-run program Hysplit4 (http://www.arl.noaa.gov/HYSPLIT_info.php). See HYSPLITbackdispersion_metadata.txt for more details.

Interest-Income Time Series for SM Energy Co. SM Energy Company, an independent energy company, engages in the acquisition, exploration, development, and production of oil, gas, and natural gas liquids in the state of Texas. It has working interests in oil and gas producing wells in the Midland Basin and South Texas. The company was formerly known as St. Mary Land & Exploration Company and changed its name to SM Energy Company in May 2010. SM Energy Company was founded in 1908 and is headquartered in Denver, Colorado.

Organochlorine, trace element, and petroleum hydrocarbon contaminants were examined in sediments from two hypersaline lakes comprising the La Sal Vieja complex in Willacy County, Texas, and from sediment and biota in a slightly brackish drain nearby. One of the lakes, East Lake, has been impacted by considerable oil and gas production, and this was reflected in moderately higher levels of most contaminants in sediments. Polynuclear aromatic hydrocarbons were detected at low levels in sediment samples, and high levels of chromium, copper, nickel, zinc, and breakdown products of organochlorine pesticides (up to 1.4 ppm wet weight DDE) were detected in fish samples from the Salt Drain nearby. The high DDE levels may pose a threat of eggshell thinning in fish eating birds. Periodic monitoring of heavy metal and DDE levels in fish is recommended.

Table 2. Capital and operating expenditures for each of the ten CO2-EOR fields analyzed for the Texas Gulf Coast in $/BBL. We assumed that EOR injection and production wells are drilled by side-tracking existing wells, so that capital costs are assumed at 50% of the cost of a new well. Abstract This letter compares several bounding cases for understanding the economic viability of capturing large quantities of anthropogenic CO2 from coal-fired power generators within the Electric Reliability Council of Texas electric grid and using it for pure CO2 enhanced oil recovery (EOR) in the onshore coastal region of Texas along the Gulf of Mexico. All captured CO2 in excess of that needed for EOR is sequestered in saline formations at the same geographic locations as the oil reservoirs but at a different depth. We analyze the extraction of oil from the same set of ten reservoirs within 20- and five-year time frames to describe how the scale of the carbon dioxide capture, utilization, and storage (CCUS) network changes to meet the rate of CO2 demand for oil recovery. Our analysis shows that there is a negative system-wide net present value (NPV) for all modeled scenarios. The system comes close to breakeven economics when capturing CO2 from three coal-fired power plants to produce oil via CO2-EOR over 20 years and assuming no CO2 emissions penalty. The NPV drops when we consider a larger network to produce oil more quickly (21 coal-fired generators with CO2 capture to produce 80% of the oil within five years). Upon applying a CO2 emissions penalty of 60$2009/tCO2 to fossil fuel emissions to ensure that coal-fired power plants with CO2 capture remain in baseload operation, the system economics drop significantly. We show near profitability for the cash flow of the EOR operations only; however, this situation requires relatively cheap electricity prices during operation.

Total-Yield-That-Is-Dividend-Plus-Net-Buyback-Yield Time Series for SM Energy Co. SM Energy Company, an independent energy company, engages in the acquisition, exploration, development, and production of oil, gas, and natural gas liquids in the state of Texas. It has working interests in oil and gas producing wells in the Midland Basin and South Texas. The company was formerly known as St. Mary Land & Exploration Company and changed its name to SM Energy Company in May 2010. SM Energy Company was founded in 1908 and is headquartered in Denver, Colorado.

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Net-Borrowings Time Series for SM Energy Co. SM Energy Company, an independent energy company, engages in the acquisition, exploration, development, and production of oil, gas, and natural gas liquids in the state of Texas. It has working interests in oil and gas producing wells in the Midland Basin and South Texas. The company was formerly known as St. Mary Land & Exploration Company and changed its name to SM Energy Company in May 2010. SM Energy Company was founded in 1908 and is headquartered in Denver, Colorado.

Table 1. Description of four scenarios run to bound the cash flow analysis for the modeled system producing oil from ten EOR reservoirs from a given number of electric generating units (EGUs). Abstract This letter compares several bounding cases for understanding the economic viability of capturing large quantities of anthropogenic CO2 from coal-fired power generators within the Electric Reliability Council of Texas electric grid and using it for pure CO2 enhanced oil recovery (EOR) in the onshore coastal region of Texas along the Gulf of Mexico. All captured CO2 in excess of that needed for EOR is sequestered in saline formations at the same geographic locations as the oil reservoirs but at a different depth. We analyze the extraction of oil from the same set of ten reservoirs within 20- and five-year time frames to describe how the scale of the carbon dioxide capture, utilization, and storage (CCUS) network changes to meet the rate of CO2 demand for oil recovery. Our analysis shows that there is a negative system-wide net present value (NPV) for all modeled scenarios. The system comes close to breakeven economics when capturing CO2 from three coal-fired power plants to produce oil via CO2-EOR over 20 years and assuming no CO2 emissions penalty. The NPV drops when we consider a larger network to produce oil more quickly (21 coal-fired generators with CO2 capture to produce 80% of the oil within five years). Upon applying a CO2 emissions penalty of 60$2009/tCO2 to fossil fuel emissions to ensure that coal-fired power plants with CO2 capture remain in baseload operation, the system economics drop significantly. We show near profitability for the cash flow of the EOR operations only; however, this situation requires relatively cheap electricity prices during operation.

Free-Cash-Flow-To-The-Firm Time Series for SM Energy Co. SM Energy Company, an independent energy company, engages in the acquisition, exploration, development, and production of oil, gas, and natural gas liquids in the state of Texas. It has working interests in oil and gas producing wells in the Midland Basin and South Texas. The company was formerly known as St. Mary Land & Exploration Company and changed its name to SM Energy Company in May 2010. SM Energy Company was founded in 1908 and is headquartered in Denver, Colorado.

Altman-Zscore Time Series for SM Energy Co. SM Energy Company, an independent energy company, engages in the acquisition, exploration, development, and production of oil, gas, and natural gas liquids in the state of Texas. It has working interests in oil and gas producing wells in the Midland Basin and South Texas. The company was formerly known as St. Mary Land & Exploration Company and changed its name to SM Energy Company in May 2010. SM Energy Company was founded in 1908 and is headquartered in Denver, Colorado.

Financial-Leverage-Ratio Time Series for Shandong Xinchao Energy Co Ltd. Shandong Xinchao Energy Corporation Limited engages in the exploration, production, and sale of oil and natural gas in China. The company holds interest in oil fields in Crosby County, Texas; and shale oil and gas properties in Howard and Borden counties, Texas. The company was formerly known as Yantai Xinchao Industry Co., Ltd. and changed its name to Shandong Xinchao Energy Corporation Limited in June 2016. Shandong Xinchao Energy Corporation Limited was founded in 1985 and is headquartered in Beijing, China. Shandong Xinchao Energy Corporation Limited is a subsidiary of Inner Mongolia Yitai Coal Co.,Ltd.

Fixed-Asset-Turnover Time Series for Shandong Xinchao Energy Co Ltd. Shandong Xinchao Energy Corporation Limited engages in the exploration, production, and sale of oil and natural gas in China. The company holds interest in oil fields in Crosby County, Texas; and shale oil and gas properties in Howard and Borden counties, Texas. The company was formerly known as Yantai Xinchao Industry Co., Ltd. and changed its name to Shandong Xinchao Energy Corporation Limited in June 2016. Shandong Xinchao Energy Corporation Limited was founded in 1985 and is headquartered in Beijing, China. Shandong Xinchao Energy Corporation Limited is a subsidiary of Inner Mongolia Yitai Coal Co.,Ltd.

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Operating-Income Time Series for Magnolia Oil & Gas Corp. Magnolia Oil & Gas Corporation, an independent oil and natural gas company, engages in the acquisition, development, exploration, and production of oil, natural gas, and natural gas liquids reserves in the United States. The company's properties are located primarily in Karnes County and the Giddings area in South Texas comprising the Eagle Ford Shale and the Austin Chalk formation. Magnolia Oil & Gas Corporation was incorporated in 2017 and is headquartered in Houston, Texas.

Price-To-Tangible-Book-Ratio Time Series for Shandong Xinchao Energy Co Ltd. Shandong Xinchao Energy Corporation Limited engages in the exploration, production, and sale of oil and natural gas in China. The company holds interest in oil fields in Crosby County, Texas; and shale oil and gas properties in Howard and Borden counties, Texas. The company was formerly known as Yantai Xinchao Industry Co., Ltd. and changed its name to Shandong Xinchao Energy Corporation Limited in June 2016. Shandong Xinchao Energy Corporation Limited was founded in 1985 and is headquartered in Beijing, China. Shandong Xinchao Energy Corporation Limited is a subsidiary of Inner Mongolia Yitai Coal Co.,Ltd.