38 DrillScan services catalog / Well Integrity

Earliest result delivery within agreed days after reception of full and usable set of data

Delivery of �nal PowerPoint® or written report within agreed weeks, intermediate reports on demand

Result support from our most experienced Drilling Champions, upon request

Result presentation in client’s o�ce (optional)

Real-time support available onsite or remotely (optional)

Deliverables and Timing

Accurate assessment of worn casing properties with unique stiff-string and 3D orientated wear models

Multiple wear factors to simulate every type of drill string contact (hardbanding, DP body, DP protector, torque reducer...) on various casing grades

Sensitivity studies on well path, DP range, hard banding, CW mitigation tools, driving system

Tortuosity and dogleg effect (via wellbore surveys, randomized or Local Dogleg Analysis [SM02])

Wear factor calibration based on calliper logs

Includes

Rotating drill string in casing generating wear at various orientations

Reduce risk of well integrity loss at the planning stage and real-time

Find optimum casing design solution in terms of safety and economics

Manage unplanned operations and their impact on casing wear

Avoid expensive work-over or shallow sidetrack operations

Increase ultimate production by enhancing well lifetime

Post-WellReal TimePre-WellBenefits /

Calculate expected cumulative wear depth and orientation in every point of the casing strings

Qualify the casing as a competent safety barrier for the entire well life-cycle

Derive residual casing strength (API collapse, burst, tensile and von Mises tri-axial safety factors)

Verify casing integrity and qualify CW mitigation measures based on calibrated Wear Factor and simulations

Anticipate high levels of wear and design casing string accordingly

Objectives

Ref: WI01

Casing Wear Analysis