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Article
Adaptability of Different Shear Failure Criteria in Shear Failure Evaluation of Cement Sheaths
The problems of lack of comparison and unclear application conditions for the shear failure criterion of cement sheaths are investigated. Based on the different shear failure criterion parameters calculated fr...
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Article
Establishment and Application of T-H-M Coupling Model of Casing-Cement Ring-Formation in Thermal Recovery Wells
With the gradual increase of thick oil extraction in petroleum resources around the world, the well wall sealing integrity problem caused by thick oil extraction is becoming more and more prominent. In order t...
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Article
Mechanism of Cement Stone Porosity and Permeability Structures for Downhole Fluid Packing
Cement ring is the main barrier for downhole fluid sealing. The sealing properties of the cement ring include two aspects: sealing off the cement ring itself and the interface. Numerous studies have been condu...
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Article
Epoxy Resin-Based Cementing Fluid Produces a Low Elastic Modulus Cementing Fluid System and Enhances the Cement–Formation Interface
Epoxy resin has better mechanical properties than Portland cement, and epoxy resin can easily seep into and stabilize the mud cake, which is more effective in improving the cement–formation bonding strength. I...
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Article
Open AccessProgrammed self-assembly of DNA origami nanoblocks into anisotropic higher-order nanopatterns
Anisotropic nanopatterns have potentials in constructing novel plasmonic structures which have various applications in such as super-resolution microscopy, medicine, and sensors. However, it remains challengin...