Managed Pressure Drilling Patent Landscape 2026
Managed pressure drilling IP is concentrated tightly among three large oilfield-services firms — Weatherford, Schlumberger entities, and Halliburton — whose combined filings dominate the field. Annual volume peaked in 2020 and has since eased, signalling a maturing technology where incremental well-control and automation patents represent the remaining competitive frontier.
Weatherford leads a highly concentrated field dominated by oilfield-services majors
Weatherford Technology Holdings LLC holds the top position in managed pressure drilling with 118 patent records, followed by multiple Schlumberger entities whose combined presence makes Schlumberger the largest corporate group in the ranking, and Halliburton Energy Services at 48 patent records.
The top five filers account for 41% of the hundred largest filers’ combined total, indicating strong concentration. A clear tier gap separates the top three from the mid-tier players such as SafeKick Americas and Grant Prideco, who hold between 36 and 37 patent records each.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | Weatherford Technology Holdings LLC | 118 | |
| 2 | Schlumberger Technology BV | 73 | |
| 3 | Halliburton Energy Services Inc. | 48 | |
| 4 | Schlumberger Technology Corporation | 48 | |
| 5 | Services Petroliers Schlumberger SA | 39 | |
| 6 | SafeKick Americas LLC | 37 | |
| 7 | Grant Prideco LP | 36 | |
| 8 | Equinor Energy AS | 33 | |
| 9 | Schlumberger Holdings Limited | 23 | |
| 10 | Citadel Drilling Ltd. | 22 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 11 | Oil States Industries (UK) Ltd. | 22 | |
| 12 | PRUITT TOOL & SUPPLY | 21 | |
| 13 | Schlumberger Canada Limited | 20 | |
| 14 | Saudi Arabian Oil Company (Aramco) | 13 | |
| 15 | BEYOND ENERGY SERVICES & TECHNOLOGY CORP | 13 | |
| 16 | China National Petroleum Corporation | 12 | |
| 17 | Weatherford Lamb Inc. | 11 | |
| 18 | Kinetic Pressure Control Ltd. | 10 | |
| 19 | Transocean Sedco Forex Ventures Ltd. | 10 | |
| 20 | Baker Hughes Oilfield Operations LLC | 9 |
The leaders’ breadth of E21B sub-classes — covering wellbore fluid management, downhole equipment, well monitoring, and blow-out prevention — suggests they have built comprehensive blocking positions across the core technology stack, making incremental entry into primary MPD functions difficult without licensing.
Filing counts for 2024 and 2025 should be treated as provisional; patent applications typically take 18–24 months to publish, so those years are under-represented in this corpus. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
A 2020 filing surge has given way to a declining trend; E21B dominates the technology mix
The annual filing trend and the IPC branch breakdown together show a field that expanded sharply around 2020 but has since contracted, with virtually all activity concentrated in a single IPC class while adjacent control and instrumentation branches remain thin.
Annual filing trend
Filings climbed from 37 records in 2018 to a peak of 92 in 2020, then fell steadily to 45 in 2022 and 30 in 2023. The 2024 and 2025 figures (10 and 4 respectively) are heavily affected by publication lag and should not be read as a continuation of the decline. The overall multi-year window still shows a net negative growth rate of 57% versus the prior comparable period, confirming that peak activity has passed.
↗ Hover for values · click a bar to ask EurekaTechnology composition
E21B (Earth and rock drilling — wells) accounts for the vast majority of patent records, dwarfing every other class. Control systems (G05B), flow measurement (G01F), and non-electric variable control (G05D) each represent only a small fraction of the corpus, highlighting how underdeveloped the software, sensing, and automation layers remain relative to the mechanical core.
↗ Hover for values · click a bar to ask EurekaHighly cited patent families surfaced by the query
Citation-heavy patent families returned by the query. Use this section as citation context, not as a curated list of the most topic-specific patents.
Spacer spool with return line to connect rig blow …
A system includes a rotating control device, a managed pressure drilling choke, a blowout preventor, a component located in the blowout preventor, and a drilling spool. The rotating control device is installed on the wellbore and configured to seal an annulus of the wellbore. The rotating control device is further configured to provide a managed pressure… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Managed pressure drilling | 130 |
| 2 | Rotating control device docking station | 112 |
| 3 | Offshore universal riser system | 72 |
| 4 | Dual gradient managed pressure drilling | 70 |
| 5 | System and Method for Managing Heave Pressure from… | 65 |
| 6 | Apparatus and method for managed pressure drilling | 65 |
| 7 | Managed pressure drilling system having well contr… | 63 |
| 8 | Well drilling and production using a surface blowo… | 63 |
Ranked by total forward citations. Citation counts favour older and broadly cited patent families, and broad or adjacent patents may appear when they match the search scope. Treat this section as citation context, not as a curated list of the most topic-specific patents. Some patent titles may be shown in their original, non-English language where an accurate translation could not be guaranteed.
What the structure means for R&D investment in managed pressure drilling
The competitive structure and technology mix point to a field where primary mechanical IP is crowded by incumbents, but adjacent automation, sensing, and materials sub-domains offer differentiated entry points.
Post-peak: mechanical core is mature, automation layer is nascent
The lifecycle stage is Decline, with annual filings easing back from the 2020 peak. The dominant E21B class is heavily covered by incumbent players, indicating that the foundational rotating control device and wellbore pressure management inventions are largely claimed. R&D investment is most defensible in adjacent automation and sensing sub-fields that are still sparsely patented.
Decline stageThree-firm oligopoly with a measurable tier gap below
Weatherford, the aggregated Schlumberger group, and Halliburton collectively hold the dominant share of the top-100 filers’ combined patent records. The next tier — SafeKick, Grant Prideco, and Equinor — are materially smaller. Niche specialists such as Opla Energy Ltd show recent momentum (up 70% in the latest window), suggesting that targeted entrants can still gain a foothold in specific sub-domains.
High concentrationCo-filing is almost entirely internal to the Schlumberger corporate family
The most active co-filing pairs are all Schlumberger entities: Schlumberger Technology LLC with Services Petroliers Schlumberger (38 joint records), and various combinations of Schlumberger Holdings, Schlumberger Canada, and Prad Research & Development. This indicates that apparent collaboration is primarily intra-group portfolio coordination rather than external partnership, leaving true cross-company collaboration as an underdeveloped ecosystem feature.
Intra-group co-filingUS-anchored filing with selective international prosecution
The United States is the primary filing jurisdiction by a wide margin, followed by the EPO and WIPO (PCT) as the main international routes. Canada, Australia, and Mexico reflect the geography of active offshore and onshore MPD deployments. China and Norway — two significant drilling markets — have comparatively thin coverage, which may represent either a deliberate strategy by incumbents or an entry opportunity for regional players.
US-led, selective globalGo beyond the landscape: Eureka’s TRIZ Solution agent breaks down an R&D problem and returns patented concept solutions, each with a technical approach and cited patent & literature evidence.
| Applicant | Collaborator | Co-filings |
|---|---|---|
| Schlumberger Technology LLC | Services Petroliers Schlumberger SA | 38 |
| Schlumberger Technology LLC | Schlumberger Holdings Limited | 19 |
| Services Petroliers Schlumberger SA | Schlumberger Holdings Limited | 19 |
| Services Petroliers Schlumberger SA | Schlumberger Canada Limited | 17 |
| Schlumberger Technology LLC | Schlumberger Canada Limited | 16 |
| Schlumberger Technology Corporation | Schlumberger Canada Limited | 14 |
| Schlumberger Technology Corporation | Services Petroliers Schlumberger SA | 14 |
| Schlumberger Technology LLC | Schlumberger Technology Corporation | 13 |
| Schlumberger Technology LLC | Prad Research and Development Ltd. | 7 |
| Services Petroliers Schlumberger SA | Prad Research and Development Ltd. | 7 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
Weatherford leads on volume; Schlumberger entities dominate collaboration and breadth
The top two positions reflect different competitive strategies: Weatherford leads on raw patent volume with a focus on core wellbore equipment, while the Schlumberger group achieves comparable reach through coordinated multi-entity filings spanning fluid management, formation evaluation, and production.
Weatherford Technology Holdings LLC
Weatherford holds 118 patent records, the highest single-entity count in the corpus. Its technology focus is concentrated in E21B 21 (drilling fluid and pressure management), E21B 33 (wellbore sealing and casing), and E21B 17 (drill pipes and tubulars), reflecting a comprehensive equipment-level position in MPD hardware. Recent momentum shows a sharp decline of 78% in the latest filing window versus the prior period, consistent with the broader field trend and possibly a strategic portfolio consolidation following the company’s restructuring.
patent records: 118Halliburton Energy Services Inc
Halliburton holds 48 patent records and is classified as a new entrant in the most recent filing window, indicating a recent step-up in MPD-specific activity after a lower-volume prior period. Its technology emphasis spans E21B 21 (pressure and fluid management), E21B 44 (automatic control of drilling direction and parameters), and E21B 47 (measuring or testing in boreholes), suggesting a strategic orientation toward intelligent and automated MPD systems rather than purely mechanical hardware — a differentiated angle relative to Weatherford.
patent records: 48| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| Weatherford Technology Holdings LLC | 4 | ▼ -78% |
| Schlumberger Technology LLC | 10 | ▲ new entrant |
| Halliburton Energy Services Inc. | 6 | ▲ new entrant |
| Schlumberger Technology Corporation | 8 | ▲ new entrant |
| Services Petroliers Schlumberger SA | 3 | ▲ new entrant |
| SafeKick Americas LLC | 5 | ▼ -84% |
| Opla Energy Ltd. | 17 | ▲ +70% |
Under-served automation, sensing, and valve-control branches adjacent to the E21B core
Against a corpus dominated by E21B, several adjacent IPC branches have fewer than 25 patent records each, pointing to areas where the technology base is sparse relative to the evident engineering need in modern MPD systems.
G05B · Control & Regulating Systems
With only 25 patent records, closed-loop control architecture for MPD remains a sparsely covered branch despite being central to autonomous and semi-autonomous drilling systems. The technical value is high: advanced feedback controllers could replace the manual choke-adjustment workflows that current MPD systems rely on. Entry paths include building on existing E21B 44 (automated drilling parameter control) filings from Halliburton and Equinor, or developing model-predictive control layers that sit above existing mechanical hardware. This is an observation of relative sparsity; commercial opportunity depends on whether open-loop control limitations are a recognised market pain point.
Search this in Eureka →G01F · Flow, Level & Volume Measuring
Only 22 patent records cover flow measurement in the managed pressure drilling context. Accurate real-time flow measurement is a prerequisite for early kick detection and precise bottomhole pressure management — both safety-critical functions. The low count suggests that instrumentation and sensor innovation lags behind the mechanical and software layers. Researchers or companies with existing flow-sensor IP in adjacent oil-and-gas applications (pipeline metering, completion monitoring) may find a plausible cross-domain entry path by adapting those techniques to the dynamic downhole environment.
Search this in Eureka →How leaders differ across MPD technology routes
Route coverage across the main technology branches in the current evidence set.
| Player | E21B 21 · Earth & rock drilling (wells) | E21B 33 · Earth & rock drilling (wells) | E21B 47 · Earth & rock drilling (wells) | E21B 44 · Earth & rock drilling (wells) | E21B 17 · Earth & rock drilling (wells) |
|---|---|---|---|---|---|
| Weatherford Technology Holdings LLC | Strong · 80 | Moderate · 17 | Emerging · 11 | Absent | Emerging · 11 |
| Schlumberger Technology LLC | Strong · 72 | Absent | Moderate · 15 | Emerging · 7 | Emerging · 6 |
| Halliburton Energy Services Inc. | Strong · 42 | Absent | Moderate · 12 | Moderate · 18 | Absent |
| Schlumberger Technology Corporation | Strong · 41 | Absent | Moderate · 15 | Emerging · 5 | Absent |
| SafeKick Americas LLC | Strong · 37 | Absent | Emerging · 6 | Moderate · 11 | Absent |
| Weatherford Lamb Inc. | Strong · 30 | Strong · 19 | Emerging · 5 | Absent | Absent |
Frequently asked questions
The corpus analysed contains 380 patent families in scope. The United States is the lead filing jurisdiction, and prosecution extends across EPO, WIPO PCT, Canada, Australia, and several other jurisdictions.
Weatherford Technology Holdings LLC leads with 118 patent records. The Schlumberger corporate group, counted across multiple legal entities, represents the largest aggregate presence, with individual entity counts ranging from 20 to 73 patent records. Halliburton Energy Services holds 48 patent records.
The field is in a decline stage. Annual filings peaked at 92 records in 2020 and have eased back since. The most recent years (2024–2025) show very low counts, but those figures are heavily affected by the standard 18–24 month publication lag and should not be taken at face value as the final activity level.
The United States dominates with 226 patent records, followed by EPO (103), WIPO PCT (71), Canada (57), and Australia (51). Mexico and China are secondary markets. Norway, a major offshore drilling nation, has 24 records — relatively modest given its operational significance.
The most-cited work in the corpus is titled ‘Managed pressure drilling’ with 130 citations, followed by ‘Rotating control device docking station’ (112 citations), ‘Offshore universal riser system’ (72 citations), and ‘Dual gradient managed pressure drilling’ (70 citations). These represent the foundational reference points for the field’s core concepts.
The clearest under-served adjacent branches are G05B (control and regulating systems, 25 patent records), G01F (flow, level and volume measuring, 22 records), G05D (control of non-electric variables, 21 records), and F16K (valves and taps, 17 records). These branches sit adjacent to the dominant E21B mechanical core and are sparsely covered relative to their technical relevance to automated and intelligent MPD systems.
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Disclaimer. This page is generated from PatSnap Eureka data drawn from a limited snapshot of global patent and scientific-literature records, and is provided for general information and reference only.
Patent data carries inherent limitations: recent filings (typically the most recent 18–24 months) are under-counted due to standard publication lag; counts may be reported at either a patent-family or a patent-record basis and are not always directly comparable; classification, applicant-name, and citation data may contain errors, duplicates, or omissions; and the underlying search query defines and constrains the scope shown. As a result, the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
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