1. INTRODUCTION A BSTRACT: An extensive database of mechanical strength
measurements has been compiled for sandstone-to-shale siliciclastic rocks including …

Research related to finding links between strength and other petrophysical observables of
rocks has always been of interest to mining and petroleum industry. Because the best single …

The mechanical strength of a reservoir formation is the most crucial information required for
predicting sand production and recommending sand control completion. The only reliable …

A new method for estimating in situ mechanical properties from logs has been tested. The
method-FORMEL-is based on a new constitutive model, describing processes which occur …

Rock mechanical properties may be derived from formation evaluation logs using empirical
relations or using algorithms based on microscopic rock models, which relate the dynamic …

In this study, 31 empirical equations are summarized that relate unconfined compressive
strength and internal friction angle of sedimentary rocks (sandstone, shale, and limestone …

The knowledge of rock strength is important in assessing wellbore stability problems,
effective sanding, and the estimation of in situ stress field. Numerous empirical equations …

There is a growing awareness among petroleum engineers of the value of rock mechanics
based analytical approaches to wellbore stability and sand production problems. It is readily …

The uniaxial compressive strength of rock (σ c) is an important parameter for petroleum
engineers, drilling operations, and all related activities from exploration through to …

A new core-testing protocol has been created to characterize rock mechanical parameters
based on lithologic composition and rock texture. The goal is to characterize the main rock …