Hydraulic Fracturing Patents: Top Companies & Filing Trends 2026
- Filing has cooled since 2022. the peak year so far sits at 184 families, and the count has fallen back toward levels last seen in 2017 — a maturing claim landscape, not a growing one.
- Service majors file together, not just alongside each other. the strongest co-assignee pairing in the dataset links 191 shared families between two units of the same corporate group, a sign of internal portfolio structuring rather than open collaboration.
- US filings dominate the venue mix. United States receiving-office filings (1,819) outnumber the next venue, WIPO/PCT (622), by roughly three to one, with Canada close behind at 547.
Filing growth compares 2021 (165 records) with 2024 (117) — a three-year span. 2024 is the most recent year we treat as complete: publication lags filing by roughly 18 months, so 2025 onwards are still filling in and any growth rate that ends there would understate the field. Top-5 share is the combined record count of the five largest assignees divided by all 4,096 records in scope (CR5), not by the ranked leaders only.
What this landscape covers
This dataset tracks patent families filed against hydraulic fracturing technology — fracturing fluids, proppants, fracture conductivity, friction reducers, stage design and microseismic monitoring — across the period 2015 to 2026. The search combines title/abstract terms for the core mechanics with claim-level terms for the specific engineering problems operators actually litigate over, and restricts the result to three IPC subclasses covering wellbore treatment, treatment materials and well-monitoring instrumentation.
Because publication trails filing by roughly eighteen months, the final one to two years in any trend chart will always look thinner than the underlying filing activity actually was. Read the recent-year figures as a floor, not a ceiling.
Filing trend and technology composition
Publication counts and IPC composition for the 4,096 families in this dataset, drawn from receiving offices in the United States, WIPO, Canada, Europe, Australia and China.
A filing curve that peaked and is now receding
Annual filings ran at 160 in 2017 and rose to a peak of 184 in 2022 before declining; 2026 figures are partial and will revise upward as later publications post, but the multi-year direction is down, not up.
Two subclasses carry almost all the volume
E21B (earth and rock drilling) and C09K (materials for miscellaneous applications, principally fracturing fluids and proppant chemistry) together account for the large majority of records; G01V (geophysics/microseismic), G06F (digital processing) and the materials-science subclasses (C04B, B01F, C08L, G01N) form a much smaller secondary tier.
Shares are the percentage of the 4,096 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Hydraulic Fracturing Technology with Eureka
This page is one run against one query. Ask Eureka your own question about hydraulic fracturing technology and every answer comes back with the patent numbers behind it.
Try EurekaMost-cited prior art and a recent representative filing
Coke proppant particles coated with friction reducer (US20250382518A1)
The application covers proppant particles made from coke and coated with a friction reducer layer 1 to 50 micrometers thick, along with the fracturing fluid that carries them and a manufacturing method specifying a friction reducer loading of 0.1 to 2.3 weight percent of the coating. The claims sit at the intersection of proppant material selection and friction-reducer chemistry rather than in either domain alone.Filed by ExxonMobil Technology and Engineering Company, published December 2025.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | WO2004009956A1 | Method of hydraulic fracture of subterranean formation | 658 |
| 2 | US5501275A | Control of particulate flowback in subterranean wells | 625 |
| 3 | US6059034A | Formation treatment method using deformable particles | 562 |
| 4 | US5330005A | Control of particulate flowback in subterranean wells | 560 |
| 5 | US6330916B1 | Formation treatment method using deformable particles | 530 |
| 6 | US5439055A | Control of particulate flowback in subterranean wells | 492 |
| 7 | US6632527B1 | Composite proppant, composite filtration media and methods for making and using same | 490 |
| 8 | US6582819B2 | Low density composite proppant, filtration media, gravel packing media, and sports field media, and methods f… | 438 |
| 9 | US6172011B1 | Control of particulate flowback in subterranean wells | 436 |
| 10 | US6599863B1 | Fracturing process and composition | 432 |
Citation counts accumulate over time and favour older filings; treat this table as a map of foundational prior art, not of current filing activity.
Each row carries its publication number; clicking a row searches Eureka by that number.
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Browse MCP servers →What the numbers mean for a filing decision
Three patterns stand out once families are counted rather than raw publications, and once recent-year undercounting is taken into account.
The core claim space is filled, not growing
Filing activity peaked in 2022 at 184 families and has trended down since, following growth from 160 in 2017. High historical density in fracturing fluid and proppant claims means most straightforward formulation and mechanical approaches are already occupied; new filings increasingly have to differentiate on narrow combinations rather than broad mechanisms.
Wellbore mechanics and fluid chemistry dominate
The two largest IPC subclasses, earth/rock drilling and materials for miscellaneous applications, cover the bulk of the corpus. Monitoring and data-processing subclasses (G01V, G06F) are an order of magnitude smaller, suggesting a filing gap around instrumentation and analytics relative to the physical mechanics of fracturing.
Filing strategy is North America-centred
United States filings lead by a wide margin, with PCT and Canadian filings forming the next tier and Europe, Australia and China trailing. This concentration reflects where shale and tight-formation operations are commercially active rather than where the underlying chemistry or mechanics originate.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to hydraulic fracturing technology, with the prior art for and against each one.
| Assignee | Co-assignee | Shared families |
|---|---|---|
| Schlumberger Technology LLC | Schlumberger Limited | 191 |
| Schlumberger Technology LLC | Schlumberger Holdings Limited | 147 |
| Schlumberger Technology LLC | Schlumberger Canada Limited | 144 |
| Schlumberger Canada Limited | Schlumberger Limited | 144 |
| Schlumberger Limited | Schlumberger Holdings Limited | 143 |
| Schlumberger Technology LLC | Schlumberger-Doll Research (Prad Research and Development Ltd.) | 124 |
| Schlumberger Limited | Schlumberger-Doll Research (Prad Research and Development Ltd.) | 123 |
| Schlumberger Holdings Limited | Schlumberger-Doll Research (Prad Research and Development Ltd.) | 122 |
All ten identified co-assignee pairs link entities that share a parent group; the strongest pairing records 191 shared families, consistent with intra-group IP structuring rather than cross-company joint development.
Who holds the portfolio, and where it stalled
The named assignees below show a common pattern: large historical families and a flat or negative year-over-year signal in the most recent period, which is partly a real slowdown and partly the publication lag inherent to any 2026 cut-off.
Major service companies show zero recent-year filings
Halliburton, Schlumberger (across its several filing entities) and Saudi Aramco all show zero filings in the latest tracked year with -100% year-over-year change. Given the eighteen-month publication lag, this reflects filings still in the pipeline as much as a genuine pullback, but the multi-year trend toward the 2022 peak and back down is consistent regardless.
Portfolios are held across multiple corporate entities
Schlumberger's portfolio in particular is split across several legally distinct filing entities that co-assign heavily with one another. Anyone benchmarking a single competitor by one entity name alone will undercount that competitor's real position.
A long tail beneath the named majors
Beyond the handful of large oilfield-services holders, the corpus includes a substantial tail of smaller and single-filing entrants, typical of a technology where materials formulation work can be done by specialty chemical suppliers and independent operators as well as the majors.
| Assignee | Recent year | YoY |
|---|---|---|
| Halliburton Energy Services, Inc. | 0 | -100% |
| Schlumberger Technology LLC | 0 | -100% |
| Schlumberger Technology Corporation | 0 | -100% |
| Baker Hughes Holdings LLC | 0 | — |
| Schlumberger Canada Limited | 0 | -100% |
| Saudi Arabian Oil Company (Saudi Aramco) | 0 | -100% |
| Schlumberger Limited | 0 | -100% |
| Schlumberger Holdings Limited | 0 | — |
Where to take this next
The dataset points to specific follow-up work depending on whether the goal is freedom-to-operate, competitive tracking or R&D targeting.
Check freedom-to-operate on proppant coating chemistry
Coated-particle claims like the ExxonMobil coke-proppant filing sit at the intersection of two dense claim families — proppant material and friction-reducer chemistry — where a combination claim can still issue even in a crowded space.
Run a claim chart in EurekaTrack the Schlumberger multi-entity portfolio as one competitor
Because the strongest co-assignee pairs are all intra-group, competitive tracking that treats each filing entity separately will misstate that group's real filing volume and direction.
Build an assignee-group view in EurekaInvestigate the monitoring and analytics gap
G01V and G06F filings are a small fraction of the corpus relative to E21B and C09K, which may indicate either genuine white space or that monitoring patents are classified elsewhere and need a broader search.
Expand the search scope in EurekaCommon questions on hydraulic fracturing patents
Filing activity is concentrated among the major oilfield services companies, whose portfolios are frequently split across multiple legally distinct filing entities that co-assign with one another. Because of this structure, ranking by a single entity name can understate a group's true position; the strongest co-assignee pairing in this dataset links two units of the same corporate group across 191 shared families. Beyond these majors there is a long tail of smaller specialty-chemical suppliers and independent operators holding individual families.
No. Filings rose from 160 in 2017 to a peak of 184 in 2022 and have declined since, with the most recent years falling back toward earlier levels. Some of the apparent recent-year drop is a publication-lag artifact, since patent publication trails filing by roughly eighteen months, but the multi-year trend across the full period is flat to declining rather than growing. This pattern is more consistent with a maturing, well-occupied claim space than an emerging one.
Two IPC subclasses account for the bulk of the corpus: E21B, covering wellbore drilling and treatment mechanics, and C09K, covering fracturing fluid and proppant materials chemistry. Secondary areas include geophysics and microseismic monitoring (G01V), digital processing (G06F), and materials-science subclasses such as cement, polymer compositions and mixing equipment. The gap in size between the two leading subclasses and the rest suggests most inventive effort has gone into fluid formulation and mechanical treatment rather than monitoring or data analytics.
This ExxonMobil Technology and Engineering Company filing, published December 2025, claims proppant particles made from coke and coated with a friction-reducer layer between 1 and 50 micrometers thick, the fracturing fluid carrying such particles, and a manufacturing method specifying a friction-reducer loading between 0.1 and 2.3 weight percent. It is a combination claim sitting between proppant material selection and friction-reducer chemistry rather than a claim over either domain broadly. Anyone developing coated or engineered proppant should check this filing's claim scope before finalizing a coating process in the same thickness and loading ranges.
The clearest gaps relative to the dense fluid and proppant claim base sit in monitoring and digital-analytics branches — microseismic event classification, real-time stage-design optimization software, proppant flowback sensing — where filing volume (G01V and G06F combined) is a fraction of the core mechanical and chemical subclasses. Water reuse and produced-water treatment chemistry, along with degradable friction-reducer polymers, also show comparatively thin direct coverage. These are worth a targeted freedom-to-operate search rather than an assumption of open space, since some of this work may be classified under adjacent IPC codes not captured by a narrow search.
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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.
Nothing on this page constitutes an exhaustive prior-art, novelty, freedom-to-operate, or validity search, nor does it constitute legal, financial, investment, or professional advice, and it should not be relied upon as such. Any patent, commercial, or strategic decision should be verified independently and reviewed with qualified patent, legal, and domain professionals. Patsnap makes no warranties, express or implied, as to the accuracy, completeness, or fitness for any particular purpose of the information presented.
Machine translation. Assignee and organisation names originally recorded in Chinese, Japanese or Korean have been rendered into English by an AI translation step so that the tables stay readable. These renderings are best-effort and may not match a company’s registered English name; the original name is what the underlying patent record carries, and it is what any Eureka query launched from this page uses.