![]() RSS tools with full collar rotation are less prone to sticking, and potentially becoming lost in hole (such an event would trigger a major non-productive time event). The steering pads are activated by drilling fluid ported via three rotary valves-one for each pad-allowing the pads to be deactivated easily for casing shoe drill-outs or reaming/back-reaming operations.Īnother major challenge for RSS designs is to ensure that all parts on the outside of the tool rotate to establish the tool’s reference and steer as required, avoiding the use of a non- or slow-rotating sleeve. The Magnus push-the-bit design overcomes this challenge by utilizing three independently controlled steering pads that allow proportional control, thereby offering infinite resolution of its steering bias. This represents a challenge for many RSS designs, such as the ones based on the steerable motor, directional drilling concept, which cannot offer total control of their steering mechanisms at any given time and must alternate steering modes with neutral to achieve an average DLS across any given interval. The increasing complexity of oil and gas wells has elevated the importance of wellbore quality and tortuosity management, which necessitates borehole deviation with accurate and precise Dog-Leg Severities (DLS) on demand. Of these, over 70% are classified as push-the-bit systems, exemplifying the popularity of this approach over other steerable technologies, such as mud motors and point-the-bit RSS. DELIVERING SOLUTIONS CONSISTENTLYĪs of August 2020, the International Association of Directional Drilling (IADD) has estimated that there are 70 different RSS tools in the market from multiple companies. This allows the operator to complete the drilling of wells faster and produce more hydrocarbons for longer. In addition, the RSS and logging while drilling (LWD) technologies offer crucial real-time formation evaluation (FE) data for reservoir characterization, staying on the planned course, and maximizing pay-zone exposure. This RSS also can be integrated with under-reamer equipment while drilling to meet the well architecture demands. For instance, this RSS can be coupled with a downhole positive displacement motor for greater rate of penetration (ROP), lower surface torque, and reduced torsional dysfunctions (such as stick-slip). This “push-the-bit” RSS offers seamless integration with the rest of Weatherford’s premium drilling solutions, to meet the operator’s directional drilling demands. ![]() A rapid adoption curve ensued, with Magnus commercially deployed in 15 countries and in five different collar sizes, ranging from 4 ¾ in. ![]() Then, in 2018, Weatherford launched a disruptive generation of “push-the-bit” RSS design-Magnus. ![]() Weatherford’s first RSS offering, introduced in the early 2000s, was based on the “point-the-bit” concept, and saw several evolutionary design changes and sizes over the following decade in response to customer requirements. These challenges also create opportunities that are best addressed by an ecosystem of cutting-edge technology, supported by holistic engineering processes, operational excellence and competent personnel, who thoroughly understand the customers’ needs and reservoir challenges. In its quest to supply hydrocarbons to fuel the world’s economy, the oil and gas industry faces multiple challenges: delivering wells that meet complex geo-mechanical requirements, on time and under budget, while complying with stringent regulations and addressing security and environmental considerations, to name a few. ![]() From 2018 up to August 2020, Magnus has drilled more than 800,000 ft (243,000 m) in 15 countries, with capabilities ranging from 18 ¼-in. ![]()
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