Sonatrach

About: Sonatrach is a company organization based out in Algiers, Algeria. It is known for research contribution in the topics: Hydraulic fracturing & Structural basin. The organization has 460 authors who have published 494 publications receiving 6339 citations. The organization is also known as: Sonatrach SPA.

A Cleaner Development: The in Salah Gas Project, Algeria

Abstract: Publisher Summary Algeria currently produces in excess of 50 billion cubic meters per year of gas, much of which is exported to Central and Southern Europe, making it one of the main regional gas suppliers. This volume is predicted to increase to over 60 billion cubic meters per year, as opportunities are taken to place additional volumes into the expanding European gas market. The In Salah Gas Project, which is a joint venture project between BP and Sonatrach, will be contributing a large part to this additional gas volume, placing 9 billion cubic meters per year into the Algerian gas supply chain. A key challenge faced by the jointly staffed In Salah Gas project team was meeting the high environmental commitments, which had been outlined by BP and Sonatrach. One of the most important of these was the commitment to non-atmospheric disposal of the produced gas CO2 stream, which reaches a concentration of 10% from some reservoirs. This chapter outlines the options and solution that have been identified for managing this environmental issue, providing a case study of one of the first major petroleum development projects where an integrated emissions mitigation plan was constructed at an early stage of project design.

Petroleum generation and accumulation in the Berkine basin, eastern Algeria

Abstract: The Berkine (Ghadames) basin is regarded as an important hydrocarbon play in eastern Algeria. An evaluation of organic source facies, the application of petroleum geochemistry, and an extensive basin modeling study were carried out to improve the understanding of the petroleum charge of the basin. Geochemical data indicate that the Llandoverian-Wenlockian and the Frasnian hot shales are the most important oil-prone source rocks for the known hydrocarbon accumulations in the basin. Maturity data reflect the Late Cretaceous-Tertiary burial and are consistent with a 60-63 mW/m2 heat flow in the vicinity of the anticlines and 50 mW/m2 heat flow farther away from the folded area. A two-dimensional basin modeling study revealed the importance of poorly constrained parameters, such as the amount and rate of Hercynian erosion, on hydrocarbon generation and trapping efficiencies. The model shows that a Cretaceous-Tertiary petroleum generation and emplacement for both source rocks can better explain the different gas and oil fields than can an earlier, Hercynian event. The faults related to the Triassic-Jurassic rifting are most certainly permeable and can be considered as major migration pathways for petroleum. In contrast, the overpressure that developed along the El Biod-Hassi Messaoud axis in the Ordovician reservoirs was probably caused by the low permeability of the faults bounding the anticlines that therefore prohibited any lateral or vertical fluid movements. The model also indicates two petroleum systems that have Triassic reservoirs: (1) a Frasnian-sourced system that is confined to the central part of the basin and (2) a Llandoverian-Wenlockian-sourced system in the western part of the basin. Migration into Paleozoic reservoirs was followed by dismigration into overlying Triassic traps after the Cretaceous compressive movements.

Modeling CO2 Solubility in Water at High Pressure and Temperature Conditions

Abstract: CO2 dissolution in water at different temperature and pressure conditions is of essential interest for various environmental, geochemical, and thermodynamic related problems. The topic is of specia...