This paper describes the application of a new methodology to estimate permeability of clastic rock formations based on the numerical simulation of the physics of mudfiltrate invasion. The methodology assumes a key well with a complete suite of well logs and rock-core laboratory measurements of porosity, permeability, capillary pressure, and relative permeability. For additional wells in the sam...

Response analysis of the buried pipeline subjected to reverse fault displacement is very important for design, detection and protection of buried pipelines. This paper looks at the buckling behavior of a buried pipeline subjected to reverse fault displacement in the rock stratum. Effects of internal pressure, wall thickness, fault displacement and burial depth on the buckling mode and the axial...

Abstract Based on five different constitutive models, the progressive failure process of deep hard rock was simulated, and plastic zone, shear strain increment high-value horizontal displacement, maximum principal stress distribution surrounding were obtained. The calculation results show that zone calculated by MCSS HBSS models is mainly concentrated in floor vault cavern, sidewall not damaged...

[1] We report on laboratory experiments examining the frictional and hydrologic properties of fault gouge and wall rock along a borehole transect that crosses a major out-of-sequence thrust splay fault within the Nankai accretionary complex. At 25 MPa effective normal stress, the fault zone material is frictionally weak (m 0.44) and exhibits low permeability after shearing (k < 5.5 10 20 m). Fa...

Sustained therapeutic hypercapnia prevents pulmonary hypertension in experimental animals, but its rescue effects on established disease have not been studied. Therapies that inhibit Rho-kinase (ROCK) and/or augment nitric oxide (NO)-cyclic guanosine monophosphate (cGMP) signaling can reverse or prevent progression of chronic pulmonary hypertension. Our objective in the present study was to det...

In view of the current technical difficulties in detection unfavorable geological bodies karst areas, this paper starts with fine a borehole wall, near-field wall rock and far-field rock, deeply excavates correlation characteristics between multi-source data, proposes technology for development areas based on data. This is used to establish data depth mining model. The are clarified. heterogene...