135421 ⎘
Apparatus for obtaining or removing undisturbed cores, e.g. core barrels, core extractors Formed core retaining or severing means
Sub-classes:CORE SAMPLE HANDLING DEVICE
#2SIDEWALL CORING TOOLS HAVING ACTIVE CIRCULATION FEATURES
#3RAPID ASSEMBLY AND AUTOMATIC SAMPLING DRILLING TOOL FOR FROZEN SOIL LAYER EXPLORATION
#4DEVICE AND SYSTEM FOR ORIENTING CORE SAMPLES
#5CORING TOOL, CORING METHOD, AND APPLICATION THEREOF
#6Core Barrel Head Assembly
#7SEALED CORING DEVICE FOR UNDERGROUND COALBED
#8Core barrel head assembly
#9SOIL CORE COLLECTING TOOL AND METHOD
#10CORING AND SAMPLING INTEGRATED SUB AND DOWNHOLE INSTRUMENT
#11A CORE SAMPLE HANDLING DEVICE
#12Continuous sampling drill bit
#13ERGONOMIC CORE DRILLING SYSTEM SHOE INTERFACE
#14Coring device
#15Control mechanism of core drilling rig
#16Drilling mechanism of coring drilling rig
#17Drilling fluid channel structure of core drilling rig
#18Fidelity retaining type coring device for rock sample
#19Core sampling and preservation system
#20System for in-situ retained coring of rock sample
#21Coring while drilling
#22Wire-line core drilling tool
#23Device for sampling soil of tropical lowland rainforest
#24Sealed pressured horizontal directional drilling continuous coring device for engineering geological investigation
#25Casing-protective horizontal directional drilling coaxial coring device for geological investigation
#26Extraction device for a core drill
#27Subterranean coring assemblies
#28Extraction device for a core drill
#29DRILL CORE SAMPLE HOLDER
#30Core sampling and analysis using a sealed pressurized vessel
#31Core sampling and analysis using a sealed pressure vessel
#32Horizontal-to-vertical drilling module for deep well
#33Virtual core generation and modeling
#34Core catchers for coring tools and related coring tools and methods
#35DEEP ROCK QUALITY ASSURANCE CORING DEVICE AND CORING METHOD THEREOF
#36Deep rock in-situ active thermal-insulation coring device and thermal-insulation coring method thereof
#37Natural gas hydrate rotary pressure-retaining corer
#38Coring apparatus
#39Coring tools including a core catcher
#40Inner barrel shear zone for a coring tool
#41Coring tools enabling measurement of dynamic responses of inner barrels and related methods
#42Core catcher for unconsolidated sediment samples
#43Core sampler with impregnation windows and method for stabilization of unconsolidated sediment in core samples
#44Subterranean coring assemblies
#45Drill bits with internally tapered blade and trimming cutting elements
#46Core drilling methods and devices
#47System and method for a pressure compensated core
#48Coring inner barrel connections for core of rock protection
#49Sealed core storage and testing device for a downhole tool
#50Coring tools including core sample flap catcher and related methods
#51Core holding system
#52Core saw and support frame structure
#53Core catcher
#54Device and system for use in monitoring coring operations
#55Core lifter
#56Underwater drilling device and method for procuring and analyzing ground samples of a bed of a body of water
#57CORING TOOLS EXHIBITING REDUCED ROTATIONAL ECCENTRICITY AND RELATED METHODS
#58Cleaning and separating fluid and debris from core samples and coring systems
#59Transverse sidewall coring
#60Ground working tool and method for its operation
#61Drill bits with core feature for directional drilling applications and methods of use thereof
#62Silty floating mud collection device
#63Activation modules for obstructing entrances to inner barrels of coring tools and related coring tools and methods
#64Coring tools exhibiting reduced rotational eccentricity and related methods
#65OBTAINING A DOWNHOLE CORE SAMPLE MEASUREMENT USING LOGGING WHILE CORING
#66Seated hammer apparatus for core sampling
#67Frangible core barrel
#68TOP MOUNT DUAL BIT WELL DRILLING SYSTEM
#69Coring tools with improved reliability during core jams, and related methods
#70Adjustable coring assembly and method of using same
#71BIT FOR DRILLING WELLS AND ASSOCIATED DRILLING METHOD
#72Coring tools including core sample flap catcher and related methods
#73Kinetic penetrator with a retrieval tether
#74WD sidewall coring tool
#75Methods and apparatus for coring
#76Sealed core
#77DRY DRILLING AND CORE ACQUISITION SYSTEM
#78Core lifter
#79Sealed core
#80Core catcher and corer having it
#81Bit for drilling wells and associated drilling method
#82Apparatus and methods for continuous tomography of cores
#83Sensors For Estimating Properties Of A Core
#84Apparatus and methods for continuous coring
#85DRY DRILLING AND CORE ACQUISITION SYSTEM