Paleostrain and Fracture Potential of Deep-Seated Wrench-Fault Systems in the Post-Hith of Block 11 (Qatar)

The Post-Jurassic strata of Block 11, offshore Qatar, are dissected by en-echelon normal faults above deep-seated wrench<br>faults below the Hith. The Hith, a thick Upper Jurassic anhydrite dominated unit, acts as mechanical decoupling layer between<br>the fault systems in the Pre- and Post-Hith sections. The paleo-strain field constrains the evolution of the fault system , which<br>influenced the reservoir-scale fracture generation. Fracture systems are an important element of many carbonate reservoirs in<br>Qatar. They are not only conduits of fluids, but also pathways of dolomitization. Structural restoration is a major tool for<br>understanding the time-dependent evolution of faults and strain, which can express themselves in the patterns of reservoir<br>scale fractures.