Achieve drilling objectives with closed-loop systems
MPD provides a closed-loop circulation system in which pore pressure, formation fracture pressure, and bottomhole pressure are balanced and managed at surface. A complete reservoir-to-flare @balance Deepwater* MPD services system delivers a customized combination of hardware, control technologies, and experience-based knowledge that helps operators to achieve their drilling objectives.
Improve drilling efficiency, wellbore stability, and kick management
Traditionally, MPD systems have helped operators “thread the needle” in tight drilling windows, enabling them to complete wells that rank among the world’s most challenging. However, in today’s competitive drilling environment, wells of all types can deploy MPD to improve drilling efficiency, manage wellbore stability, and improve kick detection and management. Downhole pressure plays a critical role in any drilling scenario—and MPD enables operators to manage downhole pressure to improve their drilling performance.
Manage pressure values
MPD provides operators with a “mud-weight-on-demand” circulation system—a system that is faster and more effective compared with conventional mud-weight alteration. The practice of applying and adjusting pressure on the wellbore results in
■ reduced frequency of stuck pipe incidents and the time to resolve them
■ decreased mud loss and associated costs
■ rapid, controlled response to pressure changes such as kicks and ballooning.
The technology, software, and personnel deployed by M-I SWACO to solve MPD challenges help prevent drilling problems at the field level, not just the well level.
@balance Deepwater services
Together, the Schlumberger companies M-I SWACO and Cameron offer the industry’s first top-to-bottom deepwater MPD system. Our technologies and experts provide a seamless and flexible solution to the challenges present in deepwater environments—from planning the well to handling mud and gas as they flow to surface.
Components such as riser gas-handling systems, rotating control devices (RCDs), and control systems are selected to ensure operations achieve MPD objectives. Experienced and dedicated personnel analyze, plan, and execute MPD programs while working with and training operator staff. Depending on customer needs, M-I SWACO can prepare rigs to accept MPD equipment, install equipment to make a rig MPD ready, and even execute MPD operations. An integrated MPD system from M-I SWACO provides customers with the ability to reliably overcome the routine surprises inherent to deepwater fields.
Well engineering and project management
Optimizing drilling performance lowers well construction costs. If pressure-related challenges are expected on a deepwater drilling campaign, M-I SWACO MPD well engineering and project management services can help.
M-I SWACO offers analysis, planning, and execution support for any MPD operation. When customizing a deepwater MPD system and plan, our MPD engineers leverage an unmatched portfolio of technologies, from high- and low-pressure RCDs to industry-leading control systems. M-I SWACO, in conjunction with Cameron, designs, manufactures, and delivers deepwater MPD systems from start to finish.
Well analysis
M-I SWACOMPD engineers first seek to understand the needs and risks present in a planned well.
It all begins with the customer’s well design. Knowing the desired drilling targets and planned well architecture, our engineers evaluate the pore pressure, fracture pressure, and stability pressure requirements of the well. Understanding the degree of certainty around these boundaries enables the development of a drillable well design.
After analyzing various drilling scenarios experienced personnel determine the optimal pressure limits, fluid hydraulics, and mud weights for an MPD or underbalanced drilling (UBD) operation. This forms an engineered basis for the well design and drilling plan, including the required degree of control and hardware, drilling and pressure control procedures, contingencies, and training.
System engineering
If the thorough evaluation indicates that an MPD or UBD solution is required, our well engineering services can be used to optimize the equipment best suited to not only execute the job but to integrate economically with the selected rig.
M-I SWACOMPD engineers design these customized systems on a well-by-well basis. Taking into
consideration customer requirements, our experienced personnel map out the specific hardware and software components necessary to achieve maximum performance. Our well engineering services enable operators to move from the theoretical to the actual by creating systems geared to achieve specific drilling objectives.
Project execution
Once the components of the MPD system are in place, MPD engineers execute the plan using dedicated resources. Part of the superior functionality of our project management services is the ability of onsite and offsite personnel to respond rapidly and knowledgeably if plans change. At the wellsite or through remote connectivity, M-I SWACO personnel leverage PRESSPRO RT* real-time downhole performance measurement software and PERFORM Toolkit* data optimization and analysis software to carefully manage the pressure window throughout the drilling, tripping, and cementing process. With powerful software and years of experience, M-I SWACO enables operators to turn many MPD decisions from reactive to proactive.
@balance Control systems
At the center of optimal pressure management in deepwater MPD operations is the i-balance system. This system continuously monitors annular pressure and manages it within specified limits to enable real-time pressure response. The i-balance system was the first automated MPD system approved for use in the deepwater Gulf of Mexico, the first operated remotely from onshore, and the first to control bottomhole pressure while drilling with casing and cementing. The latest version of the system enables even greater precision with heave surge and swab compensation.
Operators achieve accurate and precise MPD control when using the automated, semiautomated,
and manual systems offered through @balance Control* MPD systems.
Automated control
The advanced i-balance system is ideal for drilling operations that require a high degree of downholepressure control. This advanced system provides real-time automated MPD control with numerous additional features—including trip pressure management and early kick detection—that add value to drilling operations. By linking choke control to sensor inputs and a real-time hydraulics model, the i-balance system responds quickly and effectively to changing pressures and flow rates to maintain the target bottomhole pressure.
Because the i-balance system traps annular pressure on connections, an auxiliary backpressure
pump is no longer necessary, making the system ideal for tight locations and offshore rigs with
limited deck space.
Semiautomated control
When fully automated pressure control is not required, the e-balance* partially automated MPD
control system is available to provide streamlined pressure control. The e-balance system follows
a simple, editable ramp schedule to deliver the desired backpressure at any flow rate. The system
can also be operated in manual mode, enabling the choke operator to manage the required choke position and pressures via the human machine interface (HMI) on the rig floor. When cost is a priority, the system may be licensed to the operator to reduce crew size, with a customer drilling engineer or wellsite supervisor taking ownership of MPD control.
The e-balance and i-balance systems are delivered on a common equipment platform, enabling a
simple transition between automated and semiautomated pressure control as drilling requirements change in different hole sections.
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