As countries strive to reduce their CO2 emissions, Israel, which currently emits 54 million tons of CO2 annually, seeks ways to meet the net-zero target set for 2050. Carbon capture and storage (CCS) represents a viable pathway for reducing atmospheric CO2 concentrations and mitigating global warming and climate change.

Depleted hydrocarbon fields present appealing merits for CO2 storage, such as access to extensive reservoir data, established geological containment, and the possibility of reuse of existing infrastructure., However, depleted reservoirs still require analysis to determine if the reservoir is adequate for long-term CO2 storage. One such is the Mari-B, a depleted gas field located in the shallow water of the Levant Basin, offshore Israel. The field consists of two main four-way structures (i.e., mound complex) that produced 28 BCM of gas between 2004 to 2019, from the Lower Pliocene Yafo Sand Member (YSM). This CCS feasibility study aims at accessing the CO2 storage potential of the Mari-B mound complex.

The project data used in the analyses were from Mari-B field pre-production and included: 3D seismic, well logs and other supporting well data such as conventional core and side-wall core descriptions. Importantly at this stage, the project evaluation does not consider probable reservoir and overburden alterations during the 16-year field gas production phase.
A geological model was initially built using 3D seismic interpreted top and base YSM reservoir surfaces and reservoir faults.