| In Uthmanyia field in Saudi Arabia, there is a persistent problem related to cementing at high pressure zones. Recently, communication between Arab-C (abnormally over pressurized zone) and D (low pressure zone) formations has occurred due to long term water injection with increasing frequency. As a result, production has been interrupted in several oil producers. This thesis addresses the problems through investigating field practices including drilling, cementing, and completion. It also reviews the field reports and cased hole logs. A three-month and six-month studies were conducted separately to evaluate the effects of Arab-C water on cement, where the cement was exposed to Arab-C water at simulated down hole conditions. The tests for permeability, mechanical properties TGA and EDXRF are presented. In addition, it highlights the final findings and presents recommendations as well. |
