MPD Underbalanced Drilling Productivity Patent Landscape
This is a highly concentrated, maturing niche: Weatherford Technology Holdings and Halliburton Energy Services together dominate the top-ranked filers, with the United States as the primary filing jurisdiction. Annual volume peaked in 2020 and has eased since, placing the field in a post-peak decline phase, though new entrants such as ExxonMobil Technology & Engineering and OPLA Energy have recently entered the space.
Weatherford leads a tightly held field with Halliburton as close challenger
Weatherford Technology Holdings LLC ranks first among the hundred largest filers, followed by Halliburton Energy Services Inc in second place; the top five filers together account for 76% of the combined total of the hundred largest filers, signaling an unusually concentrated competitive structure.
The gap between the top two and the rest is sharp: the third-ranked entity, Weatherford Lamb Inc, holds a fraction of the leader’s position, and all remaining filers are single-digit contributors. This two-tier structure leaves limited room for mid-tier challengers without a differentiated technical angle.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | Weatherford Technology Holdings LLC | 47 | |
| 2 | Halliburton Energy Services Inc | 36 | |
| 3 | Weatherford Lamb Inc | 8 | |
| 4 | JLE Inovacao Techca Ltda EPP | 7 | |
| 5 | EXXONMOBIL TECHNOLOGY & ENGINEERING CO | 7 | |
| 6 | Highland Fluid Tech | 5 | |
| 7 | Managed Pressure Operations Pte Ltd | 5 | |
| 8 | Citadel Drilling Ltd | 5 | |
| 9 | Saudi Arabian Oil Co | 4 | |
| 10 | Protexa S.A. de C.V. | 2 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 11 | Grindstone Capital LLC | 2 | |
| 12 | PRUITT TOOL & SUPPLY | 2 | |
| 13 | Grant Prideco LP | 2 | |
| 14 | OPLA Energy Ltd | 2 | |
| 15 | Reyes Bautista Martin | 1 | |
| 16 | Aramco Services Co | 1 | |
| 17 | Telles Reyes Noe | 1 | |
| 18 | ExxonMobil Upstream Research Company | 1 | |
| 19 | James R. Lovorn | 1 |
Weatherford’s dominant position — reinforced by related entity Weatherford Lamb Inc appearing separately in the ranking — suggests deep portfolio entrenchment in core wellbore pressure management hardware. Halliburton’s close second indicates the two oilfield-services majors have effectively co-defined the prior-art landscape, raising freedom-to-operate considerations for new entrants.
The most recent filing years are subject to publication lag and likely under-count true activity; conclusions about very recent entrant momentum should be treated as directional. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
A 2020 filing peak has given way to eased annual volumes; E21B dominates the technology mix
The annual trend chart and technology composition chart together reveal a field that surged to a peak in 2020 and has since moderated, while remaining technically anchored in downhole drilling mechanics with thin representation in adjacent control, measurement, and materials branches.
Annual filing trend
Filings climbed from low single digits in 2017–2018 to a peak of 15 in 2020, then fell sharply in 2021 before a partial recovery to 13 in 2022; subsequent years show lower volumes. The most recent period (2024–2026) reflects publication lag and should not be read as a sustained drop.
↗ Hover for values · click a bar to ask EurekaTechnology composition
E21B (Earth and rock drilling — wells) dominates the technology mix by a wide margin, confirming that innovation is concentrated in downhole mechanical and hydraulic systems. C09K (materials for miscellaneous applications), G05B (control and regulating systems), and F16K (valves and taps) each hold small but distinct shares, pointing to adjacent areas where coverage is comparatively sparse.
↗ 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.
Elastic pipe control and compensation with managed…
A method of regulating downhole pressure using managed pressure drilling may include calculating an elasticity of a drill string during a drilling operation using a torque and drag model included in a managed pressure drilling (MPD) control system and calculating a surge pressure and a swab pressure acting on the drill string during the drilling operation… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Surface Gas Evaluation During Controlled Pressure … | 124 |
| 2 | Rotating control device docking station | 112 |
| 3 | Well drilling and production using a surface blowo… | 63 |
| 4 | Borehole pressure management methods and systems w… | 45 |
| 5 | Drilling fluid pressure control system for a float… | 43 |
| 6 | Automatic choke optimization and selection for man… | 42 |
| 7 | Drilling with a high pressure rotating control dev… | 37 |
| 8 | Control of Hydraulic Power Flowrate for Managed Pr… | 33 |
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 portfolio structure means for R&D investment decisions
The combination of high concentration, a post-peak lifecycle, and thin coverage outside E21B shapes both the risk profile and the opportunity set for teams evaluating entry or expansion in this space.
Post-peak: annual volume has eased from the 2020 high
The lifecycle evidence places this field in a Decline stage, with annual filings easing back from the 2020 peak. This does not preclude targeted entry but does indicate that broad, undifferentiated filing programs face a crowded prior-art base in core E21B subclasses. Teams should prioritize claims in less-saturated adjacent branches rather than re-covering ground already staked by the two dominant filers.
Lifecycle: DeclineTwo players hold the commanding share; all others are distant
The top five filers account for 76% of the hundred largest filers’ combined total, and the top two alone represent the vast majority of that share. This concentration means that licensing discussions, design-arounds, or acquisition targets are effectively limited to a short list. Any new entrant must either carve a technically distinct niche or accept exposure to Weatherford’s and Halliburton’s foundational portfolios.
High concentrationCo-filing is limited and largely intra-group or bilateral
The most active co-filing pairs identified are Weatherford Technology Holdings with Weatherford Lamb Inc (2 joint filings), and Managed Pressure Operations Pte with Grant Prideco LP (2 joint filings). Saudi Arabian Oil Co and Aramco Services Co appear as a further bilateral pair. The overall collaboration network is thin, suggesting that cross-organization R&D partnerships are not yet a defining feature of this space and that alliance-based entry strategies remain open.
Sparse co-filingUS-centric, with EPO and PCT as secondary validation routes
The United States is the primary filing jurisdiction, followed by Europe via the EPO and the WIPO PCT route. Australia and Canada appear as further protection markets, consistent with major offshore and unconventional drilling activity. Coverage in China, Brazil, Norway, and other producing regions is thin, which may reflect commercial prioritization or create gaps relevant to operators active in those basins.
US-led, selective internationalGo 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 |
|---|---|---|
| Weatherford Technology Holdings LLC | Weatherford Lamb Inc | 2 |
| Managed Pressure Operations Pte Ltd | Grant Prideco LP | 2 |
| OPLA Energy Ltd | Citadel Drilling Ltd | 1 |
| Saudi Arabian Oil Co | Aramco Services Co | 1 |
| James R. Lovorn | Halliburton Energy Services Inc | 1 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
Weatherford leads on volume and hardware breadth; Halliburton emphasizes downhole control
The two dominant filers approach the technology from overlapping but distinguishable angles: Weatherford’s portfolio is broadest across core drilling-mechanics subclasses, while Halliburton adds notable coverage in downhole flow control and automated drilling management.
Weatherford Technology Holdings LLC
Weatherford Technology Holdings LLC ranks first with 47 patent records, concentrated in E21B 21 (fluid circulation during drilling), E21B 19 (pipe handling and running), and E21B 33 (wellhead and casing-head equipment). The related entity Weatherford Lamb Inc adds 8 further records in overlapping subclasses, reinforcing the group’s foundational position in pressure-management hardware. No momentum trend is listed in the evidence for this entity, consistent with its established incumbent status.
patent records: 47Halliburton Energy Services Inc
Halliburton Energy Services Inc ranks second with 36 patent records, with its top subclasses being E21B 21, E21B 34 (downhole motors and pumps), and E21B 44 (drilling in relation to a drilling program). The emphasis on E21B 44 — automated and programmatic drilling — differentiates Halliburton’s portfolio from Weatherford’s more hardware-centric coverage. Momentum data for Halliburton is not separately listed in the evidence.
patent records: 36| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| ExxonMobil Technology & Engineering Co | 6 | ▲ new entrant |
| OPLA Energy Ltd | 7 | ▲ new entrant |
| Highland Fluid Tech | 1 | ▲ new entrant |
Under-served adjacent branches worth monitoring
Beyond the dominant E21B drilling-mechanics core, several IPC branches show low filing counts relative to their technical relevance to managed-pressure and underbalanced operations; these are observations of relative sparsity, not confirmed commercial opportunities.
G05B · Control & Regulating Systems
G05B accounts for only 10 patent records in this corpus, representing 5% of the top-100 filers’ combined IPC records. Managed-pressure drilling relies heavily on real-time pressure regulation and automated choke control, yet the dedicated control-systems IP layer is thin. Teams with expertise in closed-loop drilling automation or surface-control architectures may find less prior-art density here than in core E21B subclasses, making it a plausible entry point for software-hardware integrated claims.
Search this in Eureka →G01F · Flow, Level & Volume Measuring
G01F holds 6 patent records — 3% of IPC records in the top-100 filer pool — despite flow measurement being a critical enabling technology for underbalanced drilling productivity monitoring. The sparse coverage in this branch suggests that sensing and instrumentation innovations tied specifically to managed-pressure contexts are under-patented relative to their operational importance. Entrants combining downhole flow-measurement hardware with MPD-specific signal processing may encounter a less congested claim space.
Search this in Eureka →How leading filers differ across technology subclasses
Route coverage across the main technology branches in the current evidence set.
| Player | E21B 21 · Earth & rock drilling (wells) | E21B 47 · Earth & rock drilling (wells) | E21B 19 · Earth & rock drilling (wells) | E21B 33 · Earth & rock drilling (wells) | E21B 34 · Earth & rock drilling (wells) |
|---|---|---|---|---|---|
| Weatherford Technology Holdings LLC | Strong · 33 | Moderate · 9 | Moderate · 10 | Moderate · 10 | Emerging · 3 |
| Halliburton Energy Services Inc | Strong · 28 | Moderate · 9 | Absent | Absent | Moderate · 11 |
| Weatherford Lamb Inc | Strong · 19 | Emerging · 3 | Moderate · 9 | Strong · 12 | Moderate · 5 |
| Managed Pressure Operations Pte Ltd | Strong · 7 | Strong · 7 | Absent | Absent | Absent |
| JLE Inovacao Techca Ltda EPP | Strong · 7 | Absent | Strong · 7 | Absent | Absent |
| OPLA Energy Ltd | Strong · 7 | Absent | Absent | Absent | Absent |
| ExxonMobil Technology & Engineering Co | Strong · 7 | Absent | Absent | Absent | Absent |
Frequently asked questions
The corpus covers 49 patent families in the MPD underbalanced drilling productivity space.
Weatherford Technology Holdings LLC leads with 47 patent records, well ahead of the second-ranked Halliburton Energy Services Inc with 36 patent records.
The evidence places the field in a Decline stage, with annual filings having peaked in 2020 and easing back since then.
The United States is the primary filing jurisdiction, followed by Europe via the EPO and the WIPO PCT route. Australia and Canada are the next most represented markets; coverage in China, Brazil, Norway, and other producing regions is minimal.
Yes. ExxonMobil Technology & Engineering Co, OPLA Energy Ltd, and Highland Fluid Tech are identified as new entrants in the applicant momentum data, suggesting fresh interest from both a major integrated operator and specialist firms despite the overall post-peak filing environment.
G05B (control and regulating systems) and G01F (flow, level, and volume measuring) show the lowest filing counts among technically relevant adjacent IPC classes, with 10 and 6 patent records respectively. F16K (valves and taps) and F15B (fluid-pressure actuators) are also sparsely covered relative to the dominant E21B drilling-mechanics core.
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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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