8
Figure 28: Impact scores related to the treatments of offshore drilling waste…………….66
Figure 29: Damage scores related to the treatments of offshore drilling waste…………...67
Figure 30: Terrestrial ecotoxicity scores of toxic emissions emitted to soils
from drilling waste treatments………………………………………………...68
Figure 31: Comparison of three offshore exploration drilling scenarios (3 Wells).............69
List of tables
Table 1: Conventions and standards for offshore drilling operations…………………….22
Table 2: Chemical sets and functions of drilling fluid components....................................29
Table 3: Industrial activities of the petrochemical complex……………………………....44
Table 4: Types of waste and pollution generated by the industrial activities…………….45
Table 5: Extract from the matrix of emissions and extractions of well sections
and drilling waste treatments life cycle……………………………………….....55
Table 6: Definitions and corresponding units of selected impact and damage
categories.............................................................................................................59
Table 7: Well section damage and risk scores, expressed by corresponding units……….60
Table 8: Contribution scores of well sections in Human toxicity and Ionising radiation...61
Table 9: Damage scores of the drilling waste treatments expressed in specific units…….68
List of appendices
Appendix 1: Dominant flora and fauna in the Skikda costline…………………………...77
Appendix 2: Some reference flows from well drilling and waste management………….81
Appendix 3: Extract of the emissions linked to the life cycle of the offshore
drilling well according to the three scenarios.....................................................................84
List of abbreviations
1,4-DB eq: 1,4 dichlorobenzene equivalent (Reference substance for human toxicity in the CML
method)
DALYs: Disability-Adjusted Life Years
CML: Centrum voor Milieukunde Leiden (Leiden Center for Environmental Sciences)
IFP : French Petroleum Institute
LCA: Life cycle assessment
LCI: Life cycle inventory
Figure 28: Impact scores related to the treatments of offshore drilling waste…………….66
Figure 29: Damage scores related to the treatments of offshore drilling waste…………...67
Figure 30: Terrestrial ecotoxicity scores of toxic emissions emitted to soils
from drilling waste treatments………………………………………………...68
Figure 31: Comparison of three offshore exploration drilling scenarios (3 Wells).............69
List of tables
Table 1: Conventions and standards for offshore drilling operations…………………….22
Table 2: Chemical sets and functions of drilling fluid components....................................29
Table 3: Industrial activities of the petrochemical complex……………………………....44
Table 4: Types of waste and pollution generated by the industrial activities…………….45
Table 5: Extract from the matrix of emissions and extractions of well sections
and drilling waste treatments life cycle……………………………………….....55
Table 6: Definitions and corresponding units of selected impact and damage
categories.............................................................................................................59
Table 7: Well section damage and risk scores, expressed by corresponding units……….60
Table 8: Contribution scores of well sections in Human toxicity and Ionising radiation...61
Table 9: Damage scores of the drilling waste treatments expressed in specific units…….68
List of appendices
Appendix 1: Dominant flora and fauna in the Skikda costline…………………………...77
Appendix 2: Some reference flows from well drilling and waste management………….81
Appendix 3: Extract of the emissions linked to the life cycle of the offshore
drilling well according to the three scenarios.....................................................................84
List of abbreviations
1,4-DB eq: 1,4 dichlorobenzene equivalent (Reference substance for human toxicity in the CML
method)
DALYs: Disability-Adjusted Life Years
CML: Centrum voor Milieukunde Leiden (Leiden Center for Environmental Sciences)
IFP : French Petroleum Institute
LCA: Life cycle assessment
LCI: Life cycle inventory