|
CN112282636A
|
|
Screw core drill
|
|
CN112238253A
|
|
Electric pipe cutting device
|
|
CN112127794A
|
|
Continuous rotary drilling device suitable for large-diameter casing pipe construction
|
|
CN112127813A
|
|
Power device capable of being used for lowering pipe string in moon pool area
|
|
CN112253011A
|
|
Method for offline pipe string descending of marine single-derrick platform
|
|
CN112227983A
|
|
Method for lifting and lowering drilling tool by using double lifting clamps
|
|
CN112096313A
|
|
Hydraulic slip for preventing drilling tool clamping damage
|
|
CN112112590A
|
|
Rope coring drilling tool suitable for ocean drilling and process method
|
|
CN112196483A
|
|
Sand sample automatic collection device for well drilling
|
|
CN112112588A
|
|
Press-in type rope coring drilling tool and coring process method thereof
|
|
CN112253001A
|
|
Forced separation device for drilling tools of submarine drilling rig
|
|
CN111980613A
|
|
Offshore drilling process for deck without casing layer
|
|
CN111997535A
|
|
Drilling tubular column centralizing method and centralizing device for ocean severe weather
|
|
CN112127842A
|
|
Subsea drilling rig escape method and escape device
|
|
CN112065267A
|
|
All-metal large-torque non-circular gear downhole power drilling tool
|
|
CN111946301A
|
|
Sea area natural gas hydrate collecting device and collecting method
|
|
CN112031673A
|
|
Quick-screwing-unscrewing drill rod with convenient-to-disassemble and assemble joint
|
|
CN111706283A
|
|
Core tube one-way valve mechanism of rope coring drilling tool
|
|
CN111706281A
|
|
Rope coring drilling tool
|
|
CN111706280A
|
|
Elastic clamp positioning mechanism for inner pipe assembly of rope coring drilling tool
|
