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challenging conditions

Stretching the boundaries of exploration and development in more remote and harsh conditions, presents engineering construction challenges and demands increasingly complex well solutions.

The complex environments in which ACL Engineering have expertise are;

High Pressure, High Temperature wells are hotter or higher pressure than most. HPHT is formally defined as a well having an undisturbed bottomhole temperature of greater than 300oF [149oC] and a pore pressure of at least 0.8 psi/ft (~15.3 lbm/gal) or requiring a BOP with a rating in excess of 10,000 psi [68.95 MPa]. These types of wells require highly specialised well, casing and completion design to ensure that failure under such harsh conditions is minimised. ACL Engineering brings a wealth of HPHT experience to a project including metallurgy and elastomer selection, pore pressure prediction, geomechanics modeling and reservoir modeling.

Multilateral-well technology is changing the way that reservoirs are accessed by wells. The ability to create wells with multiple branches that can target widely spaced reservoir deposits provides engineers with an unlimited number of options for exploiting otherwise uneconomic assets where the drilling of dedicated wellbores for recovery would prove too costly. However, along with the opportunities that come from multilaterals, comes the increasingly complex engineering design considerations that result from these well architectures. ACL Engineering experts have worked on many projects including some of the most complex multilateral projects in the industry’s history.

Managed Pressure Drilling and Under Balanced Operations refer to a drilling process that precisely controls the annular pressure profile of the wellbore during drilling operations. This is done by monitoring the downhole pressure environment limits and managing the annular hydraulic pressure profile using hydrostatic or mechanical methods.

ACL Engineering expertise can deliver the benefits of these techniques including the elimination of formation damage, increasing the rate of penetration, reducing lost circulation and eliminating differential sticking whilst implementing solutions to mitigating safety risks and the risk of well collapse.

Depleted Reservoir and Deepwater
ACL Engineering understand the increasing importance of these challenging conditions for the longer term future of the oil and gas industry and are actively developing and establishing a basis of expertise that will be complete in the near future.

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