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Chapter 10, Section 2 of the book "Petroleum Related Rock Mechanics," 2nd Edition, by Erling Fjaer, Rune M. Holt, Per Horsrud, Arne Marius M. Raaen and Rasmus Risnes is presented. It presents the operational aspects of solids production, specifically sand production. It discusses the observations of sand production which can be classified in three types including transient sand production, continuous sand production and catastrophic sand production.

Chapter 9, Section 7 of the book "Petroleum Related Rock Mechanics," 2nd Edition, by Erling Fjaer, Rune M. Holt, Per Horsrud, Arne Marius M. Raaen and Rasmus Risnes is presented. It illustrates the stability of borehole during drilling. It presents few field cases from the literature, illustrating the application of rock mechanics analysis to borehole stability problems. They include drilling-induced lateral shifts along the pre-existing fractures and drilling in a complex geological setting.

Chapter 9, Section 3 of the book "Petroleum Related Rock Mechanics," 2nd Edition, by Erling Fjaer, Rune M. Holt, Per Horsrud, Arne Marius M. Raaen and Rasmus Risnes is presented. It illustrates the stability of borehole during drilling. It focuses on the failure of time-delayed borehole stability. It discusses the establishment of pore pressure equilibrium. It notes that steady state pore pressure equilibrium is reached if the formation is exposed to the mud pressure.

Chapter 9, Section 2 of the book "Petroleum Related Rock Mechanics," 2nd Edition, by Erling Fjaer, Rune M. Holt, Per Horsrud, Arne Marius M. Raaen and Rasmus Risnes is presented. It illustrates the stability of borehole during drilling. It focuses on the analysis of rock mechanics of stability in drilling. It discusses the significance of mud in drilling a deep well. The mud prevents the flow of pore fluid in the well and hole instabilities, and transports drill cuttings from hole to surface.

Chapter 10, Section 1 of the book "Petroleum Related Rock Mechanics," 2nd Edition, by Erling Fjaer, Rune M. Holt, Per Horsrud, Arne Marius M. Raaen and Rasmus Risnes is presented. It presents the operational aspects of solids production. It presents the problems of this production including the erosion of production equipment, instability of production cavities and the wellbore and necessity to handle large amounts of polluted solids at the rig.

Chapter 9, Section 6 of the book "Petroleum Related Rock Mechanics," 2nd Edition, by Erling Fjaer, Rune M. Holt, Per Horsrud, Arne Marius M. Raaen and Rasmus Risnes is presented. It illustrates the stability of borehole during drilling. It focuses on the use of pressure in stability calculations. It notes that converting different pressures at a given depth of density value is customary since it has to be related to a mud density.

Chapter 9, Section 4 of the book "Petroleum Related Rock Mechanics," 2nd Edition, by Erling Fjaer, Rune M. Holt, Per Horsrud, Arne Marius M. Raaen and Rasmus Risnes is presented. It illustrates the stability of borehole during drilling. It focuses on the interaction between shale and drilling of fluid. It notes that oil-based muds usually give better hole stability that the water-based muds. However, water-based muds are preferred for environmental reasons.

Owing to some problems in their stability of existent building structures, the general software ANSYS is adopted to establish the finite element solid models of circular reinforced concrete long columns confined with CFRP sheets under small eccentric compression and used to analyze the influence of CFRP sheets to these structural buckling loads. Height of columns, layers of CFRP sheets, concrete grade, longitudinal rebar diameter, stirrup diameter, stirrup spacing and eccentric distance are some factors considered. Based on the nonlinear finite element buckling analysis of these columns, some major conclusions are summarized as follows: (1) The enhanced level of buckling load is descending with the increasing columns' height and increasing with the increasing layers and eccentric distance; (2) The buckling load increment is independent of concrete grade, longitudinal rebar diameter, stirrup diameter and stirrup spacing; (3) The improvement is comparatively obvious to use CFRP sheets to strengthen the structure when its stability is poor. Influences of CFRP sheets to circular reinforced concrete long columns can be found by analyzing the stability of these columns, and the analysis results are available for the strengthening of some concrete structures in practice. [ABSTRACT FROM AUTHOR]

Chapter 10, Section 3 of the book "Petroleum Related Rock Mechanics," 2nd Edition, by Erling Fjaer, Rune M. Holt, Per Horsrud, Arne Marius M. Raaen and Rasmus Risnes is presented. It presents the operational aspects of solids production, specifically chalk. It notes that the prediction and control of chalk production can be more problematic. However, in some cases, chalk is produced slowly at constant rate.