PowerDrive XceedDesigned for productive drilling that gets wells to the best place in less time

A FULLY ROTATING RSS IMPROVES DRILLING PERFORMANCE SEVERAL W AYS:

■ Drilled cuttings flow past the BHA is enhanced because the RSS does not create annular bottlenecks in the wellbore.

■ ROP increases because efficient cuttings removal keeps cuttings from being reground.

■ Penetration rates improve because there are no stationary components to create friction.

■ Both mechanical and differential sticking are reduced because there are no stationary components contacting the casing, whipstock, or borehole. The absence of stationary components also reduces the chance that the BHA will pack off.

These fully rotating, point-the-bit systems, which have internal steering mechanisms, extend the

benefits of rotary steerable drilling to applications that exceed the performance limits of externally steered tools. The totally enclosed, rugged, internal steering mechanisms of PowerDrive Xceed systems provide significant wear and reliability advantages for productive drilling in abrasive environments. They also reduce dependence on wellbore contact for steering.

That makes PowerDrive Xceed systems ideal for openhole sidetracking in overgauge or washed-out holes, and for productive drilling in soft and interbedded formations. It also allows directional drilling with bicenter bits.

STEERABILITY

Because PowerDrive Xceed systems do not depend on contact with the borehole wall to build angle, they can drill doglegs and sidetracks at build rates as high as 8°/100 ft [8°/30.5 m] to put wells in the best place in the reservoir. These reliable systems also reduce the tendency of the hole to spiral due to variations in trajectory.

PowerDrive XceedPowerDrive Xceed* rotary steerable systems are engineered to be accurate and reliable in challenging drilling conditions and harsh, rugged environments.

REAL-TIME WELL PLACEMENT

Combining a PowerDrive Xceed rotary steerable system (RSS) with a PowerPulse* MWD telemetry system provides real-time transmission of at-the-bit inclination and azimuth readings. Using this real-time near-bit information to update the well trajectory enables the drilling team to steer the wellbore to the best place for optimum production. In addition, the independence of the PowerDrive Xceed steering response from formation influences helps to punch through hard interbedded streaks in the reservoir at high angles and keep the wellbore in the target window.

ENVIRONMENTAL TOUGHNESS

PowerDrive Xceed systems can operate in temperatures as high as 302 degF [150 degC] and in all types of fluid environments. Because their steering mechanisms are internal, PowerDrive Xceed systems are much less susceptible to wear in sandstones and other highly abrasive environments than externally steered tools are. Internal seals that are not exposed to fluids containing abrasive cuttings further enhance the life of these systems.

Steer wells to the best place in less time

BENEFITS

■ Lower drilling costs, due to increased ROP, better hole cleaning, and fewer stuck pipe incidents

■ Accurate, responsive steering independent of formation or hole gauge

■ More consistent, reliable,and predictable doglegs and sidetracks

■ Ability to steer while using a bicenter bit

■ On-bottom downlinking without interrupting drilling operations

■ Real-time telemetry providing at-the-bit inclination and azimuth, when combined with PowerPulse telemetry system

FULL ROTATION FOR PRODUCTIVE DRILLING IN CHALLENGING APPLICATIONS

■ Extended-reach wells

■ Openhole sidetracks and overgauge holes

■ Doglegs to accommodate difficult well designs in hard and soft formations

■ Real-time well placement

■ Directional drilling with bicenter bits

STEERING WITH A BICENTER BIT

A bicenter bit can be used with a PowerDrive Xceed RSS to increase hole gauge during directional drilling. This ability to open the hole while rotary steering is particularly advantageous for the productive drilling of extended-reach and deepwater wells.

HYDRAULICS OPTIMIZATION

PowerDrive Xceed systems do not require pressure drop across the bit to operate. This gives the driller flexibility to optimize hydraulics and drill extended-reach wells without exceeding rig pressure limitations.

HOLD-THE-LINE OPERATION

In hold-the-line mode, a PowerDrive Xceed RSS follows the desired trajectory and automatically corrects inclination and azimuth if they deviate from it. This closed-loop correction is especially helpful for drilling long tangent sections and staying inside very tight target windows to put wells in the best place. It allows the driller to focus on drilling optimization and maximizing ROP to reach TD in less time.

The PowerDrive Xceed internal steering mechanism continuously orients the tilted bit shaft to control drilling direction.

FIELD EXPERIENCE

A PowerDrive Xceed 900 RSS helped put a well in the best place in less time in the North Sea’s Dumbarton field. The RSS achieved an ROP of 450 ft/h [137 m/h] and provided high dogleg angles in soft formations while drilling the well’s 121⁄4-in [311.12-mm] section.

A PowerDrive Xceed 675 RSS provided excellent geosteering control for Maersk Oil Qatar A.S. while drilling in thin sands in Qatar’s Nahr Umr reservoir. The bit stayed in the sand section through 99% of the 6,581-ft [2,006-m] long, 81⁄2-in [215.9-mm] hole section, and more than 90% of the drain section was drilled within the optimum zone of the sand.

During the drilling, the RSS changed the trajectory 90º at an extended step-out. This kind of performance has proved very difficult to achieve with conventional technology.

BENEFITS OF FULL ROTATION

PowerDrive Xceed systems are part of a family of PowerDrive* rotary steerable systems. These systems all have a fully rotating design, which gives them significant advantages over systems that have nonrotating parts or components that rotate very slowly. This fully rotating design requires no compromises in drilling operations. There is no need for special equipment or procedures.

Power generationmodule: Turbine-drivenalternator supplies powerfor steering and control.

Control system: Electronicsand sensor package takemeasurements to controlstreering assembly.

Steering section: Assemblycontinuously orients thetilted bit shaft to control thedrilling direction and thedogleg severity of the borehole.

Mechanical Specifications and Operating Limits

PowerDrive Xceed 675 PowerDrive Xceed 900

Nominal (API) OD, in [mm] 63⁄4 [171.5] 9 [228.6]Hole size range, in [mm] 83⁄8–97⁄8 [212.7–250.8] 121⁄4–171⁄2 [311.2–444.5]Maximum body OD, in [mm] 7.625 [193.7] (collar) 9.8 [248.92] (collar)Minimum ID, in [mm] 3.935 [99.9] (collar) 5.25 [133.4] (collar)Maximum external upset, in [mm] 7.625 [193.7] 9.8 [248.9]Upset type and location Thread, 161 in [4.1 m] from top Thread, 178 in [4.5 m] from topCollar fishing neck length (from top sub), ft [m] 3 [0.9] 13 [4]Sub length (no optional subs), ft [m] 25 [7.6] 28 [8.5]Sub weight—loaded (in air), lbm [kg] 2,620 [1,188] 4,500 [2,041]Top thread connection (API) 51⁄2 FH box 65⁄8 FH box or 75⁄8 H-90 boxTop thread joint yield torque, ft-lbf [N.m] 23,000–26,000 [31,184–35,251] 42,000–46,000 [56,944–62,368]Bottom thread connection 41⁄2 Reg box 65⁄8 Reg box or 75⁄8 Reg boxBottom thread joint yield torque, ft-lbf [N.m] 13,000–15,000 [17,626–20,337] 28,000–32,000 [37,963–43,386]Top connection bending stress ratio 2.02 2.44Bottom connection bending stress ratio 2.03 2.12Average moment of inertia, in4 76.22 252Equivalent bending stiffness, ft of drill collar 31 (6.75-in OD × 2.81-in ID) 35.9 (9.0-in OD × 3.0-in ID)Maximum collar dogleg, rotating, °/100 ft 8 6.5Maximum collar dogleg, pass-through, °/100 ft 15 12Maximum dogleg severity, rotating, °/100 ft 8 6.5Maximum dogleg severity, pass-through, °/100 ft 15 12Maximum dogleg capability, °/100 ft 8 6.5Maximum weight on bit, lbf [N] 55,000 [244,652] 75,000 [366,617] Maximum operating speed, rpm 350† 350†

Maximum operating torque, ft-lbf [N.m] 20,000 [27,116] 35,000 [47,454] Maximum operating tensile load, lbm [kg] 5 0,000 [22,680] 75,000 [34,019]Maximum jarring load, lbm [kg] 1,000,000 [453,592] 1,000,000 [453,592] Maximum shock, g/Hz 250 250Maximum operating pressure, psi [kPa] 20,000 [137,900] 20,000 [137,900] Maximum differential pressure, psi [kPa] 2,000 [13,790] internal to external

1,000 [6,895] external to internal2,000 [13,790] internal to external 1,500 [10,342] external to internal

Sub pressure drop constant, C 28,000‡ 100,000‡

Maximum operating temperature, degF [degC] 302 [150] 302 [150]Magnetic field cone of exclusion, steering, ° ±5 ±5Maximum flow limit, galUS/min [L/min] 800 [3,028] 1,800 [6,814] Maximum operating flow rate, galUS/min [L/min] 800 [3,028] 1,800 [6,814] Minimum operating flow rate, galUS/min [L/min] 290 [1,098] 450 [1,703] Turbine sets, galUS/min [L/min] 290–410 [1,098–1,552]

360–570 [1,363–2,158] 475–800 [1,798–3,028]

450–750 [1,703–2,839] 600–1,200 [2,271–4,542] 900–1,800 [3,407–6,814]

Maximum mud sand content, % 2 2Maximum lost circulation material Medium-size nut plug Medium-size nut plugMaximum concentration, lbm/bbl 50 50Nonmagnetic sub Yes YesSub magnetic permeability Negligible Negligible † Minimum speed is 2 rpm ‡ The pressure drop constant (C) is entered in this equation (for each sub): Pressure drop = MWlbm/galUS × Q2 where MW is the mud weight in lbm/galUS, Q is the flow rate in galUS/min, and C is the pressure drop constant

C

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PowerDrive XceedFEATURES

■ Rugged and fully rotating

■ Totally enclosed design resistant to wear and stress

■ Internal steering mechanism with minimal dependence on wellbore contact

■ Hold-the-line closed-loop downhole control for tangent sections

■ Optional integrated power sectionto maximize drilling performance