Preface

You hold in your hand the very first Drilling Engineering volume of the SPE Petroleum Engineering Handbook. This volume is intended to provide a good snapshot of the drilling state of the art at the beginning of the 21st century. Obviously, the history of well drilling goes back for millennia. The history of scientific oilwell drilling had its beginnings at the end of Word War II. Perhaps one indication was that while Petroleum was first established as a Division of the American Inst. of...

Foreword

This 2006 version of SPE's Petroleum Engineering Handbook is the result of several years of effort by technical editors, copy editors, and authors. It is designed as a handbook rather than a basic text. As such, it will be of most benefit to those with some experience in the industry who require additional information and guidance in areas outside their areas of expertise. Authors for each of the more than 100 chapters were chosen carefully for their experience and expertise. The resulting...

Elastic Wellbore Stress Concentration

Borehole Stress And Tensile Failure

1.4.1 Stresses Around a Vertical Well. For a vertical well drilled in a homogeneous and isotropic elastic rock in which one principal stress the overburden stress, Sv is parallel to the wellbore axis, the effective hoop stress, agg, at the wall of a cylindrical wellbore is given by Eq. 1.8. Fig. 1.16 Log-derived unconfined compressive strength for two wells drilled into sands of the Hemlock formation, Cook Inlet, Alaska, along with laboratory test data dots . In this case, the strength log was...

Stress Pore Pressure and Effective Stress

World Map Strike Slip Zone

1.2.1 Definitions and Tectonic Stresses. Forces in the Earth are quantified by means of a stress tensor, in which the individual components are tractions with dimensions of force per unit area acting perpendicular or parallel to three planes that are in turn orthogonal to each other. The normals to the three orthogonal planes define a Cartesian coordinate system xj, x2, and x3 . The stress tensor has nine components, each of which has an orientation and a magnitude see Fig. 1.1a . Three of...

Andersonian Faulting Classifications

Andersonian Faulting

Where v is Poisson's ratio, and a 1 - Kdry Kgrain is the Biot poroelastic coefficient, which varies between zero for a rock that is as stiff as the minerals of which it is composed and one for most sediments, which are much softer than their mineral components. It is important to note that Eq. 1.1 cannot be used to calculate the relationship between pore pressure and stress in the Earth that develops over geological time because in that case the assumptions used to derive the equation are not...

Determining Stress Orientation

4arm Caliper Log

The most reliable way to determine stress orientation is to identify features either geological features or wellbore failures the orientation of which is controlled by the orientations of the present-day in-situ stresses. Other methods that rely on observing the effect of stress on rock properties using oriented core have been found to be less reliable and subject to influence by factors other than in-situ stress. 1.5.1 Using Wellbore Failure. As previously discussed, wellbore breakouts occur...

Society Of Petroleum Engineers

Petroleum Engineering

Geomechanics Applied to Drilling Engineering Gary West, John Hall, and Simon Seaton Well Control Procedures and Principles Introduction to Roller-Cone and Polycrystalline Diamond Drill Bits III 10 Drilling Problems and Solutions 11 Introduction to Well Planning 13 Emerging Drilling Technologies Iain Dowell, Andrew Mills, Marcus Ridgway, and Matt Lora 16 Coiled-Tubing Well Intervention and Drilling Operations Alex Sas-Jaworsky, II, Curtis Blount, and Steve M. Tipton

Petroleum Engineering Handbook

Petroleum Engineering

Fanchi, Editor Drilling Engineering Robert F. Mitchell, Editor Facilities and Construction Engineering Kenneth E. Arnold, Editor Production Operations Engineering Joe Dunn Clegg, Editor Reservoir Engineering and Petrophysics Edward D. Holstein, Editor Emerging and Peripheral Technologies H.R. Warner Jr., Editor Society of Petroleum Engineers 222 Palisades Creek Drive Richardson, TX 75080-2040 USA Copyright 2006 Society of Petroleum Engineers All rights reserved. No...