135449 ⎘
Fishing for or freeing objects in boreholes or wells using impact means for releasing stuck parts, e.g. jars hydraulically-operated
Sub-classes:Adjustable Hydraulic Jarring Device
#2Methods and apparatus for retrieving a wireline using a release sub
#3VARIABLE INTENSITY AND SELECTIVE PRESSURE ACTIVATED JAR
#4SYSTEM FOR DISLODGING AND EXTRACTING TUBING FROM A WELLBORE
#5WELLBORE CASING WHILE DRILLING WITH DRILLING JAR
#6Wellbore casing while drilling with drilling jar
#7DOWNHOLE PRESSURE WAVE GENERATING DEVICE
#8Fluid-driven pulsing hammering tool
#9RECIPROCATING DRIVE APPARATUS
#10Adjustable hydraulic jarring device
#11System for dislodging and extracting tubing from a wellbore
#12SYSTEMS AND METHODS FOR SIDETRACKING OPERATIONS
#13Adjustable mill
#14Mechanical jar, method and system
#15Variable intensity and selective pressure activated jar
#16Downhole pressure wave generating device
#17Fluid-driven pulsing hammering tool
#18Method and apparatus of smart jarring system
#19Well abandonment and slot recovery
#20System for dislodging and extracting tubing from a wellbore
#21System and method for moving stuck objects in a well
#22Horizontal drilling machine with impact device
#23Adjustable hydraulic jarring device
#24Jarring tool and method of use
#25Retrieving a stuck downhole component
#26Mechanically locking hydraulic jar and method
#27Downhole pressure wave generating device
#28Freeing stuck tubulars in wellbores
#29Dislodging tools, systems and methods for use with a subterranean well
#30Systems and methods for stuck drill string mitigation
#31Drilling speed improvement device capable of producing both hydraulic pulse and impact vibration
#32System for dislodging and extracting tubing from a wellbore
#33Systems and methods for stuck drill string mitigation
#34Hydraulic drilling jar with hydraulic lock piston
#35Dislodging tools, systems and methods for use with a subterranean well
#36Travel joint
#37Smart drilling jar
#38Reaction valve drilling jar system
#39Variable intensity and selective pressure activated jar
#40Adjustable hydraulic jarring device
#41Jarring apparatus
#42Downhole disconnect tool
#43Wellbore assembly with an accumulator system for actuating a setting tool
#44Downhole impact apparatus
#45SHOCK INDUCEMENT IN CORE BARREL ASSEMBLY
#46Linear and vibrational impact generating combination tool with adjustable eccentric drive
#47Downhole stroking tool
#48Linear and vibrational impact generating combination tool with adjustable eccentric drive
#49Variable intensity and selective pressure activated jar
#50Adjustable hydraulic jarring device
#51Hydraulic Jar Firing Isolation Device
#52Reaction valve drilling jar system
#53Multimodal tool jar
#54Energy harvesting from a downhole jar
#55Downhole impact generation tool and methods of use
#56Pressure lock for jars
#57Hydraulic jar and a flow control device usable in the hydraulic jar
#58Signal operated drilling tools for milling, drilling, and/or fishing operations
#59Downhole amplification tool
#60Wireline down jar
#61Method and apparatus for a wellbore assembly
#62Subterranean vibrator with lateral vibration feature
#63Hydraulic/mechanical tight hole jar
#64Sealed jar
#65Pressure lock for jars
#66Subterranean vibrator with lateral vibration feature
#67Downhole rotational vibrator
#68Jar with improved valve
#69SELECTIVE CONTROL OF CHARGING, FIRING, AMOUNT OF FORCE, AND/OR DIRECTION OF FORCE OF ONE OR MORE DOWNHOLE JARS
#70Downhole apparatus
#71Method and apparatus for a wellbore assembly
#72Double-acting jar
#73Running and cementing tubing
#74Tools and methods for hanging and/or expanding liner strings
#75Signal operated tools for milling, drilling, and/or fishing operations
#76Jar device for use in coil tubing drilling
#77Electrically activating a jarring tool
#78METHOD FOR RELEASING STUCK DRILL STRING
#79Running and cementing tubing
#80Method for releasing stuck drill string
#81Method for releasing stuck drill string
#82Jar with adjustable trigger load
#83Fluid driven jarring device