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Article
Open AccessEmpirical rock physics relationships on carbonate dry-frame elastic properties
Laboratory tests were conducted to analyze the ultrasonic velocity response to the pressure change in dry carbonate rocks from the Weyburn oilfield, Canada. Twenty-four samples are from seven wells with helium...
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Article
Determination of Rock-Breaking Performance of High-Pressure Supercritical Carbon Dioxide Jet
In this study, a well-designed experimental setup is used to determine the rock-breaking performance of a high-pressure supercritical carbon dioxide (SC-CO2) jet. Its rock-breaking performance is first compared w...
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Article
Hydrodynamic Analysis of Suck-in Pulsed Jet in Well Drilling
The development of new drilling methods is important for the exploration and production of oil fields. The pulsed jet is a drilling technology of high potentiality. This article proposes a new concept of suck-...
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Article
Numerical Simulation of Transient Cuttings Transport with Foam Fluid in Horizontal Wellbore
With considering the interlayer mass transfer and fluid influx from the reservoir, a one-dimensional two-layer hydraulic model was established to describe the mechanism of transient cuttings transport with foa...
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Article
A Three-Segment Hydraulic Model for Annular Cuttings Transport with Foam in Horizontal Drilling
Through mechanical analysis, an improved hydraulic model for annular cuttings transport with foam was established for horizontal drilling. Based on the two critical inclination angles, the entire well was divi...
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Article
Euler/Euler theory and application of fluid-particle two-phase jet
High Pressure abrasive waterjet is a typical fluid-particle two-phase jet, it is widely used in many industries. In this paper, abrasive particle phase is treated as a continuum, both fluid phase and particle ...
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Article
Numerical simulation study on rock breaking mechanism and process under high pressure water jet
The numerical simulation method to study rock breaking process and mechanism under high pressure water jet was developed with the continuous mechanics and the FEM theory. The rock damage model and the damage-c...
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Article
Exact solution and its behavior characteristic of nonlinear dual-porosity model
A nonlinear dual-porosity model considering a quadratic gradient term is presented. Assuming the pressure difference between matrix and fractures as a primary unknown, to avoid solving the simultaneous system ...
