Search

Due to the intrusion of igneous rocks, conventional clastic formations are not only divided and modified by igneous rocks on a macroscopic scale but the pore structure of sandstones is also altered by complex physicochemical effects on a microscopic scale. The strong planar and longitudinal inhomogeneity of the reservoir poses difficulties for well test interpretation. Based on the theory of seepage mechanics and mathematical-physical methods, a well test model with arbitrary combinations of multi-layer and multi-zone composite features is established for the non-homogeneous characteristics of sandstone reservoirs. The main factors affecting the bottom-hole pressure dynamics are analyzed. The results show that the composite reservoir characteristics and boundary conditions of the high permeability layer are mainly reflected at the early stage of the system flow phase, while those of the low permeability layer is mainly reflected at the late stage of the system flow phase. When the reservoir boundary is closed or at constant pressure, the pressure derivative curve will undergo an upward or downward shift in response. The case analysis proves the reliability and practicality of the model, and the research results provide theoretical support for the interpretation of test wells in similar reservoirs. [ABSTRACT FROM AUTHOR]

Copyright of Oil Drilling & Production Technology / Shiyou Zuancai Gongyi is the property of Shiyou Zuancai Gongyi Bianjibu and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Oil Drilling & Production Technology / Shiyou Zuancai Gongyi is the property of Shiyou Zuancai Gongyi Bianjibu and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Special Oil & Gas Reservoirs is the property of Special Oil & Gas Reservoirs Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Oil Drilling & Production Technology / Shiyou Zuancai Gongyi is the property of Shiyou Zuancai Gongyi Bianjibu and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Heilongjiang University of Science & Technology is the property of Journal of Heilongjiang University of Science & Technology Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Special Oil & Gas Reservoirs is the property of Special Oil & Gas Reservoirs Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Oil Drilling & Production Technology / Shiyou Zuancai Gongyi is the property of Shiyou Zuancai Gongyi Bianjibu and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Petroleum Geology & Recovery Efficiency is the property of Petroleum Geology & Recovery Efficiency and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

新昌盆地地处中国东南沿海火山-侵入杂岩带的东北端，区内广泛出露晚中生代火山岩与使入岩类，岩石类型丰富，是研究岩石遥感光谱的理想地区.作者对该地区的岩石样品进行了可见-近红外光谱和热红外光谱分析测试，研究了火成岩矿物组成、蚀变特征、共生状态等与遥感光谱的关系，并对其形成机理进行了探讨.

Copyright of Oil Drilling & Production Technology / Shiyou Zuancai Gongyi is the property of Shiyou Zuancai Gongyi Bianjibu and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Fe isotopes fractionate during magmatic processes. Comparing to mantle xenoliths(withδ56 Fe average value of ca. 0‰), basalts incorporate heavier Fe isotopes(withδ56 Fe average value of 0. 1‰). Relative to basic and intermediate magmatite, acidic magmatites show heavy Fe isotope enrichments. The Fe isotope fractionation during magmatic processes is controlled mainly by the oxidation states. Normally, Fe3+-bearing minerals(e. g. , magmatite)incorporate heavy Fe isotopes than Fe2+-bearing minerals(e. g. , olivine, pyroxene). During partial melting process, Fe3+is enriched in the melt preferentially, leading to heavy Fe isotopes enriched into the melt. As a result, the partial melting product(normally basalt)incorporates heavy Fe isotopes relate to the residue. During magmatic differentiation, the crystallization of Fe2+-bearing minerals such as olivine and pyroxene in low oxygen fugacity condition leads to enrichment of Fe3+thus heavy Fe isotopes in the residual melt;the crystallization of Fe3+-bearing minerals such as magnetite in high oxygen fugacity results in enrichment of Fe2+thus light Fe isotopes in residual melt. During fluid exsolution, the exsolved fluid preferentially incorporates light Fe isotopes. It shows that Fe isotope is a powerful tracer for studying magmatic processes. [ABSTRACT FROM AUTHOR]