Author
Songtao Wu
Bio: Songtao Wu is an academic researcher from PetroChina. The author has contributed to research in topics: Diagenesis & Reservoir modeling. The author has an hindex of 3, co-authored 3 publications receiving 159 citations.
Papers
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TL;DR: In order to determine the micro-structure of pore throat, the high pressure mercury intrusion experiments (HPMI) were performed on the tight oil sandstone samples of Chang 7 member in Xin’anbian Block, Ordos Basin, China as mentioned in this paper.
193 citations
TL;DR: In this article, the authors have analyzed the Baikouquan Formation in the Mahu Sag at the northwestern margin of the Junggar Basin and found that high porosity and permeability are associated with the dissolution of K-feldspars and volcanic fragments.
27 citations
TL;DR: In this paper, multiple parameters are extracted from the mercury injection capillary pressure (MICP) curves and the degree of multicollinearity between these parameters is analyzed, and the partial least squares regression (PLSR) method is used for establishing the permeability prediction model and the optimal number of latent variables of the model is determined by the leave-one-out cross-validation (LOOCV) method.
14 citations
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TL;DR: In this paper, the pore size distribution and 3D pore connectivity are evaluated from NMR and XCT analysis, and the NMR spectrum is also linked to the macroscopic performance, and pore network is determined from N 2 GA, and fractal theory is introduced to explain the irregularity and heterogeneity of pore throat structure characteristics.
410 citations
TL;DR: In this paper, the authors studied the properties of the pore space of low-permeability porous media and compared the results obtained from three different methods: scanning electron microscopy, MICP, and X-ray computed tomography (X-ray CT).
152 citations
TL;DR: In this article, the pore structure was comprehensively evaluated and characterized by linking NMR T2 spectrum with high pressure mercury intrusion (HPMI) analysis, and three typical types of pore structures were recognized through thin section, SEM analysis combined with the capillary curve and NMRT2 spectrum, and the microscopic and macroscopic characteristics of the three pore shapes were investigated.
126 citations
TL;DR: In this paper, a set of parameters, including the clay mineral index, Lorentz coefficient, compositional maturity, and plane porosity are tentatively proposed to evaluate the quality of tight reservoir rocks.
83 citations
TL;DR: In this paper, the effect of fractal dimensions of pore-throat structures on petrologic and physical properties of tight sandstone was investigated, and the optical observations, fractal theory, and prediction model were integrated to explore the qualities of various reservoir types in tight sandstones.
Abstract: The pore-throat structures play a dominant role in the evaluation of properties of tight sandstone, but it remains difficult to determine the related parameters and understand their impact on reservoir quality Hence, toward this end, we analyze the experimental data that are indicative of the pore-throat system, then we investigate the effect of fractal dimensions of pore-throat structures on petrologic and physical properties, and finally, the optical observations, fractal theory, and prediction model were integrated to explore the qualities of various reservoir types in tight sandstones The results show that the fractal dimensions of the mercury intrusion curve correspond to three pore-throat types and those of the mercury extrusion curve could correspond to two pore-throat types Five types of reservoirs were identified, the best reservoir type has a high percentage of interparticle and dissolution pores but a low proportion of clay-related pores, and the differences in pore-throat connectivity of various types affect storage capacity significantly The storage ability prediction models of various reservoir types are raised by integrated experimental data This work employed a comprehensive fractal theory based on capillary pressure curves and helps to explore how pore-throat systems influence reservoir quality in tight sandstones
78 citations