For the Inventor, By the Inventor

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Tulsa, OK, United States of America

Dowell Schlumberger Incorporated

Calculating rank

USPTO Granted Patents = 127

CIPO Patents = 1

Trademarks = 3

Forward Citations = 4,484

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147 inventors (with patents filed for the assignee):

Robert M Sorem (11 out of 17 patents)

David Milton Eslinger (9 out of 69 patents)

Richard M Hodge (9 out of 9 patents)

4. Donald C Cameron (7 out of 9 patents)

5. Wayne W Frenier (6 out of 32 patents)

6. Bart V Thomeer (5 out of 10 patents)

7. Erik B Nelson (4 out of 40 patents)

8. Clare H Kucera (4 out of 12 patents)

9. William R McIntire (4 out of 4 patents)

10. Louise Bailey (3 out of 23 patents)

11. Annie Audibert (3 out of 21 patents)

12. Kenneth H Nimerick (3 out of 19 patents)

13. Paul I Reid (3 out of 4 patents)

14. Joseph D Scranton (3 out of 3 patents)

15. Harold D Brannon (3 out of 3 patents)

Core Competencies:

Fluid Loss Control

Fracturing Fluid

Inflatable Packer

Cement Composition

Drilling Processes

Coiled Tubing

Chemical Removal

High-Pressure Methods

Gravel Packing

Subterranean Treatment

Hydraulic Release Joint

Foamed Slurry Generator

127 patents: Sort by Forward Citations

1. 5948733 - Fluid loss control (1999-09-07),

2. 5933945 - Composite coiled tubing apparatus and methods (1999-08-10),

3. 5669456 - Process and water-base fluid utilizing hydrophobically modified (1997-09-23),

4. 5658861 - Delayed borate crosslinked fracturing fluid having increased temperature (1997-08-19),

5. 5658859 - Pseudoplastic mixed metal layered hydroxide fluid with fluid loss (1997-08-19),

6. 5637556 - Process and water-base fluid for controlling the dispersion of solids (1997-06-10),

7. 5627143 - Wellbore fluid (1997-05-06),

8. 5597783 - Drilling processes and fluid used in well drilling applications (1997-01-28),

9. 5594050 - Cement composition containing chemically crosslinked polyvinyl alcohol (1997-01-14),

10. 5466063 - Device for continuously mixing liquid additives into a fluid (1995-11-14),

11. 5439053 - Reinforcing slat for inflatable packer (1995-08-08),

12. 5429191 - High-pressure well fracturing method using expansible fluid (1995-07-04),

13. 5404947 - Pre-formed stress rings for inflatable packers (1995-04-11),

14. 5398755 - Stress rings for inflatable packers (1995-03-21),

15. 5390738 - Inflatable packer inner bladder retention and seal (1995-02-21),

Company Overview

Dowell Schlumberger Incorporated, headquartered in Tulsa, Oklahoma, specializes in wellbore fluids technology, focusing on enhancing drilling efficiency and well integrity. The company develops advanced solutions in fluid loss control, fracturing fluids, and cement compositions, catering to the oil and gas industry. Their expertise extends to high-pressure methods, coiled tubing applications, and chemical removal processes, positioning them as a key player in optimizing drilling operations and improving overall performance in challenging environments.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

127 Patents

#2 in Tulsa, OK

#13 in Oklahoma

#3,054 in US

#6,327 in the World

Tulsa, OK, United States of America

Dowell Schlumberger Incorporated

Forward Citations = 4,484

147 inventors:

Robert M Sorem (11 out of 17 patents)

David Milton Eslinger (9 out of 69 patents)

Richard M Hodge (9 out of 9 patents)

4. Donald C Cameron (7 out of 9 patents)

5. Wayne W Frenier (6 out of 32 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Dowell Schlumberger Incorporated. Retrieved from https://idiyas.com/company/dowell-schlumberger

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

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