ClassID:

135288

E21B17/006 - page 2 - CPC Classification

Classification description:

Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings Cables; ; Tubings Accessories for drilling pipes, e.g. cleaners

Recent Application in this class:
#301
20060042709
2006-03-02

Thread protector for a pipe

#302
20050230110
2005-10-20

Apparatus identification systems and methods

#303
20050230109
2005-10-20

Apparatus identification systems and methods

#304
20050166986
2005-08-04

Thread protector for tubular members

#305
20050133269
2005-06-23

Adjustable hole cleaning device

#306
20050121189
2005-06-09

Reinforced resilient wiper element

#307
20050081933
2005-04-21

Thread protector for use on pin end of oilfield tubulars

#308
20050045240
2005-03-03

Methods for protecting a threaded portion of a tubular member

#309
18990073
2025-11-11

Fairings for mobile downhole tools in producing wells

#310
18958783
2025-09-09

Shock resistant and load tailored tensile bar method, and system

#311
18925339
2026-03-24

Method and apparatus, including hose reel, for cleaning an oil and gas well riser assembly with multiple tools simultaneously

#312
18486683
2025-03-11

Lifting plug

#313
18453883
2024-11-26

Method and apparatus, including hose reel, for cleaning an oil and gas well riser assembly with multiple tools simultaneously

#314
17936259
2025-09-23

Method and apparatus, including hose reel, for cleaning an oil and gas well riser assembly

#315
17539446
2023-01-10

Method and apparatus for cleaning and inspecting oil well drilling mud flow lines

#316
16780001
2023-11-21

Method and apparatus, including hose reel, for cleaning an oil and gas well riser assembly with multiple tools simultaneously

#317
15836823
2020-04-28

System and method to reduce wellbore annular fluid volumes

#318
15814014
2020-03-24

Method and apparatus, including hose reel, for cleaning an oil and gas well riser assembly with multiple tools simultaneously

#319
15633594
2019-11-12

Helical strakes and collar

#320
15292930
2019-01-08

Method and apparatus for cleaning an oil and gas well riser assembly with multiple tools simultaneously

#321
14596158
2017-10-10

Polish rod alignment device/stuffing box packing preserver