Abnormal Pressures while Drilling - Origins, Prediction, by Alan Mitchell, Jean-Paul Mouchet

By Alan Mitchell, Jean-Paul Mouchet

This functional guide brings jointly a variety of bibliographic details on irregular pressures and provides the sensible event of the authors and numerous specialists inside of Elf-Aquitaine. essentially destined for day after day use through subsurface geologists and drilling engineers anyplace they're faced with the issues of overpressure, it describes a few of the origins of strain anomalies, and info the tools to be had for his or her prediction, detection and overview. it's going to even be important to petroleum geologists, petroleum engineers and reservoir engineers as a reference handbook.
entrance subject
• checklist of vital Abbreviations
• Preface
• desk of Contents
• advent
1. strain strategies
2. The Origins of Non-Hydrostatic irregular Pressures
three. Prediction and Detection
four. Quantitative strain evaluate
• five. precis and total Conclusions - aid Chart
6. Appendices

Show description

Read or Download Abnormal Pressures while Drilling - Origins, Prediction, Detection, Evaluation PDF

Similar mining books

Reservoir Engineering Handbook, Fourth Edition

 Reorganized for simple use, Reservoir Engineering instruction manual, Fourth version offers an up to date connection with the instruments, options, and technological know-how for predicting oil reservoir functionality even within the so much tricky fields. subject matters coated within the guide comprise: approaches to augment construction good amendment to maximise oil and fuel restoration finishing touch and evaluate of wells, good trying out, and good surveys Reservoir Engineering guide, Fourth variation presents good details and perception for engineers and scholars alike on maximizing construction from a box with the intention to receive the absolute best financial go back.

Data Mining for Design and Manufacturing: Methods and Applications

Information Mining for layout and production: tools and functions is the 1st booklet that brings jointly examine and functions for facts mining inside layout and production. the purpose of the publication is 1) to explain the combination of knowledge mining in engineering layout and production, 2) to offer quite a lot of domain names to which facts mining may be utilized, three) to illustrate the fundamental want for symbiotic collaboration of workmanship in layout and production, info mining, and knowledge expertise, and four) to demonstrate how one can conquer significant difficulties in layout and production environments.

Integrated Sand Management For Effective Hydrocarbon Flow Assurance, Volume 63

This instruction manual offers recommendations to the elemental concerns linked to wells and reservoirs experiencing sanding difficulties, in particular in deepwater environments. Sand administration is a big problem for the petroleum because it extends its exploration actions to new frontiers. demanding extremely deepwater, excessive Pressure-High Temperature (HP-HT) and Arctic environments require engineers to drill extra advanced wells and deal with extra complicated reservoirs, the vast majority of that are susceptible to mammoth sand creation.

Extra info for Abnormal Pressures while Drilling - Origins, Prediction, Detection, Evaluation

Sample text

WATER ESCAPE CURVE . (Schematic) (Powers, 1959 ) I I f I II II \ 2nd 1st Dehybrationl Lattice and water Stability zone \ / II II /t t Lattice water Stability zone lnterlayer water lsopleth t Deep burial I a Y b C Fig. 23. - Expulsion of water from clays during burial - models suggested by POWERS(1959)and BURST (1969) (in Burst, 1969, reprinted by permission of the American Association of Petroleum Geologists). 23A) : 1) free pore water expelled near the surface under the influence of pressure ; 2) interlayer water released gradually, first under the effects of pressure, then increasingly under the influence of temperature.

Abnormal pressure may therefore develop if this fluid cannot be expelled, but as the process takes place at shallow depth it is usually possible for the excess water to escape. Similarly, anhydrite rehydration is accompanied by an increase in volume of the same order. Louden suggests that such a process is capable of generating abnormal pressure, as 47 may be the case with the Mississippi Buckner Formation, whose approach marked by a gradual transition from anhydrite to gypsum. This second hypothesis is still highly debatable.

These means are not universally applicable, and their effectiveness varies from case to case. A number of methods are available for the qualitative or quantitative assessment of abnormal pressure. The first concern must be to study local structure and lithostratigraphy to reveal any closed system which may be present. This initial phase may be able to detect zones of potential risk, and must be incorporated into the preparatory stages of the drilling programme, even though it can give no guarantees about the presence and magnitude of abnormal pressure.

Download PDF sample

Rated 4.95 of 5 – based on 22 votes