Anadarko Petroleum Corporation was a company engaged in hydrocarbon exploration. It was organized in Delaware and headquartered in two skyscrapers in The Woodlands, Texas: the Allison Tower and the Hackett Tower, both named after former CEOs of the company. In 2019, the company was acquired by Occidental Petroleum.The company was the subject of multiple environmental cases, including the largest environmental contamination settlement in American history - the 2014 settlement related to the former Tronox subsidiary of Kerr McGee, a company purchased by Anadarko in 2006.In addition to exploration and production, the company engaged in petroleum and natural gas gathering, processing, treating, and transportation. The company also participated in the hard minerals business through its ownership of non-operated joint ventures and royalty arrangements. As of December 31, 2018, the company had approximately 1.473 billion barrels of oil equivalent (9.01×109 GJ) of proved reserves, 45% of which was oil reserves, 37% of which was natural gas, and 18% was natural gas liquids. In 2018, the company produced 666 thousand barrels of oil equivalent (4,070,000 GJ) per day.The company's operations in the United States accounted for 86% of total sales volumes during 2018 and 88% of total proved reserves at year-end 2018. In the United States, the company had major holdings in the Delaware Basin, where it had over 580,000 gross acres, primarily in the Cline Shale; the Denver Basin, where it had more than 400,000 net acres; operating 4,600 vertical wells and 1,400 horizontal wells, and in Greater Natural Buttes, Utah, where it had approximately 2,850 wells.The company's international operations accounted for 14% of total sales volumes during 2018 and 12% of total proved reserves at year-end 2018. The company had holdings in Algeria, Ghana, Mozambique, Colombia, and Côte d’Ivoire. In the 2019 Forbes Global 2000, Anadarko Petroleum was ranked as the 587th -largest public company in the world.
Scanning electron microscopy (SEM) images were acquired from core samples before and after low-temperature hydrous pyrolysis (LTHP) representing a variety of rock types from productive tight oil reservoirs of the Wolfcamp shale in the Delaware Basin, Texas. All of the samples yielded moderate-gravity oil (33 degrees-41 degrees API) via LTHP, regardless of lithology and total organic carbon (TOC) content, with the greatest amount of oil released from a tight sandstone sample recovered from the cored Wolfcamp X-Y sands interval. Retained bitumen, identified by its scaly appearing surface texture in SEM images, was observed in the post-LTHP samples. Interpreted oil-prone organic matter appeared unaltered between the as-received and post-LTHP samples, indicating no oil was generated from the thermal degradation of kerogen during LTHP. As-received mineral and organic matter pores also appeared unaltered following LTHP. However, dolomite moldic pores and organo-moldic pores were observed only in the post-LTHP samples, providing evidence of carbonate dissolution and hydrocarbon mobilization during LTHP. Oils released from the organic-lean sandstone and silt-stone samples from the cored X-Y sands interval are interpreted as oils migrated from intraformational source rocks, whereas oils released from the higher TOC carbonaceous mudstone samples are interpreted as in situ generated oils retained in the thermally mature source rock facies. Variations in API oil gravity between the migrated and in situ oils are most likely the result of variation in volatile hydrocarbon loss during core retrieval and storage based on gas chromatography of the released oils, rather than reflecting oil generated from different source rocks.
D/2D data-based studies of active spreading centres brought the knowledge of extension ratedependent stretching-dominated v. buoyancy-dominated spreading. 3D reflection seismic data from the extinct centre of an initial oceanic corridor in the Caribbean allow us to see an along-strike transition between stretching- and buoyancy-dominated spreading where the spreading through detachment faulting is a precursor to the magma-assisted spreading. Studying progressively more evolved portions of the spreading centre, going from its end towards its centre, we see a progressively higher ascent of the asthenosphere, which heats the developing core complex in the exhuming footwall of the initial stretching-dominated system. The asthenospheric ascent is associated with thermal weakening of the core complex, which eventually results in ductile deformation reaching the upper portion of the complex. Subsequently, the core complex is penetrated by the dyke located at the top of the asthenospheric body. The dyke, which subsequently evolves to a diapir-shaped body, reaches the sea floor and establishes a magma-assisted steady-state seafloor spreading. These observations lead to a model explaining the initiation of the magma-assisted spreading in the initial oceanic corridor. Furthermore, they also improve our knowledge of multiple interacting mechanisms involved in the breakup of the last continental lithospheric layer, subsequent disorganized spreading and younger organized spreading.
It is proposed that the abandoned name "Wolfcamp Formation" be reinstated as a formal lithostratigraphic unit for a lower Permian (Cisuralian) to Upper Pennsylvanian interval comprising interbedded dark gray to black basinal mudstone and limestone in the to the guidelines of the North American Stratigraphic Code. The proposed Wolfcamp Formation is defined as the interval from the base of the lowermost sandstone of the Bone Spring Formation to the top of the Strawn Formation/Group at the proposed reference section of the Ross Draw 7 well drilled in southern Eddy County, New Mexico. Adoption of the proposed Wolfcamp Formation as a formal lithostratigraphic unit in the Delaware Basin is subject to acceptance and usage by others following publication of this proposal. It is anticipated that formal adoption of the Wolfcamp Formation will encourage others to formally define the correlative lithostratigraphic unit in the Mid
Many authors become frustrated with the amount of time it takes to review, accept, and publish their work in peer-reviewed scientific journals. An analysis of papers published in volume 107 of the AAPG Bulletin through November 2023 shows publication took an average of 25 months from manuscript submission to publication. Most of the time is consumed during the review period that averaged 15 months. The length of the review period includes the time taken to complete revisions, which averaged 12 months, and is a function of the manuscript quality and the number of revisions required prior to the final decision. Recommendations are provided to assist authors in preparing manuscripts for submission and guidelines for reviewers to help expedite the review process.
Next No AccessInterpretationJust-Accepted ArticlesIntroduction to special section: South China Sea deep structures and tectonicsAuthors: Ruwei ZhangBaojin ZhangHongtao ZhuJean-Claude SibuetAnne BriaisJonny WuSusilohadi SusilohadiHongliu ZengJianxiong ChenGuangfa ZhongRuwei ZhangGuangzhou Marine Geological Survey, China. E-mail: [email protected]; [email protected]., Baojin ZhangGuangzhou Marine Geological Survey, China. E-mail: [email protected]; [email protected]., Hongtao ZhuChina University of Geosciences, Wuhan, China. E-mail: [email protected]., Jean-Claude SibuetIfremer Centre de Brest, Plouzan´e Cedex, France. E-mail: [email protected]., Anne BriaisCentre National de la Recherche Scientifique, Institut Universitaire Européen de la Mer, France. E-mail: [email protected]., Jonny WuUniversity of Houston, USA. E-mail: [email protected]., Susilohadi SusilohadiNational Research and Innovation Agency, Research Centre of Geological Resources, Indonesia. E-mail: [email protected]., Hongliu ZengThe University of Texas at Austin, USA. E-mail: [email protected]., Jianxiong ChenAnadarko Petroleum Corporation, USA. E-mail: [email protected]., and Guangfa ZhongTongJi University, China. E-mail: [email protected].https://doi.org/10.1190/int-2024-0307-spseintro.1 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack Citations ShareFacebookTwitterLinked InReddit FiguresReferencesRelatedDetails Just-Accepted ArticlesPages: 1-44ISSN (print):2324-8858 ISSN (online):2324-8866 publication data© 2024 Society of Exploration Geophysicists and American Association of Petroleum GeologistsPublisher:Society of Exploration GeophysicistsAmerican Association of Petroleum Geologists HistoryPublished Online: 15 Mar 2024 CITATION INFORMATION RuweiZhang, BaojinZhang, HongtaoZhu, Jean-ClaudeSibuet, AnneBriais, JonnyWu, SusilohadiSusilohadi, HongliuZeng, JianxiongChen, and GuangfaZhong, (), "Introduction to special section: South China Sea deep structures and tectonics," Interpretation 0: 1-2. https://doi.org/10.1190/int-2024-0307-spseintro.1 Plain-Language Summary PDF Download Metrics Loading ...
