Joint reports


Investigation of the Hazard Presented to Offshore Platforms by Mud Volcanoes and Earthquakes


  • The executive companies: Geology Institute
  • The year of publication: 1993
  • Code: -
  • Volumes: total 1
     volumes with appendixes in same amount: -




EXECUTIVE SUMMARY


The territory of Azerbaijan is situated on the tectonically active geosyncline folded region, characterized by high seismicity and broad development of mud volcanism. Without analysis of the continual evolution of these factors in space and time, the precise choice of the place, on which a platform will be installed during the exploitation of oil and gas sediments and the positioning of pipeline routes in the sea, is impossible.


The aim of the proposed report is to conduct hazard analysis and to evaluate the probability of volcanic eruptions and of earthquakes sea at any moment.


In the report, the results of many - factores static data processing for earthquakes in Azerbaijan during 1932-1990, and of volcanic eruptions for last 100 years, are given.


The hazard analysis of the Chirag area in the Caspian Sea is given.


Detailed methods can be used for planning and installing platforms as well as for positioning pipelines in any reservoirs.


CONTENTS


INTRODUCTION


1. MATHEMATICAL BASIS FOR SOLVING PROBLEMS RELATED TO THE EVALUATION OF THE HAZARD PRESENTED BY OCCURRENCES OF MUD VOLCANISM AND SEISMIC ACTIVITY

1.1 Main Concepts in Probability Theory
1.2 Main Distributions and Conclusions Used During the Project
1.3 Main Mathematical and Statistical Concepts and Facts Used During the Project
1.4 Testing of Statistical Hypotheses
1.5 One problem With the Discovery of "Disorder" in Multiple Random Processes
1.6 Cluster Analysis


2. ASSESSMENT OF RISK ASSOCIATED WITH MUD-VOLCANO ACTIVITY

2.1 The Probability of a New Mud Volcano Developing in a Specific Area (Chirag)
2.2 Investigation of the Distribution of Distances of Individual Groups of Gryphons from a General Eruptive Centre
2.3 Prediction of the Waiting Time and Frequency of Mud-Volcano Eruptions in the Chirag Area
2.4 Analysis of the Relationships of Variables Related to Mud-Volcano Eruptions
2.5 Investigation of the Distribution of Variables Associated with Mud-Volcano Flows
2.6 Investigation of Factors Associated with the Emission of Combustible Gases
2.7 Study of the Probability of Fracture-Formation Accompanying the Processes of Mud-Volcano Eruption


3. INVESTIGATION OF SEISMIC HAZARD TO OFFSHORE HYDROCARBON-INDUSTRY INSTALLATIONS IN THE CHIRAG AREA

3.1 Investigation of the Frequency Distribution of Major Earthquakes, and Their Intensity
3.2 Investigation of the Directional Distribution of Longitudinal Earthquake Waves
3.3 Investigation of the Occurrence of Seismic Dislocations, Their Causes, and Their Spatial Orientation
3.4 Methodology for Assessing the Seismic Threat to Individual Foundations During Drilling, Allowing for Acoustic Rigidity


4. INVESTIGATION OF THE PROBABILITY OF HAZARDOUS EVENTS ASSOCIATED WITH THE INTERRELATED ACTIVITY OF SEISMICITY AND MUD VOLCANISM

CONCLUSIONS AND RECOMMENDATIONS


MAIN CONCLUSION


REFERENCES


LIST OF TABLES


LIST OF FIGURES