CN111734350A
|
|
Separating valve capable of being opened and closed repeatedly
|
CN111734377A
|
|
Well cementation fracturing technology and well cementation fracturing operation pipe column
|
CN111734361A
|
|
Open-hole gravel packing sand prevention process and open-hole gravel packing sand prevention service pipe string
|
CN111734362A
|
|
Large-drift-diameter sand prevention process for filling gravel layer at a time
|
CN111734339A
|
|
Hydraulic retrievable packer with large drift diameter
|
CN111734360A
|
|
Mechanically controlled reverse circulation check valve
|
CN110566154A
|
|
Ultra-short type removable hydraulic packer
|
CN110454104A
|
|
A kind of hydraulic releasing running tool
|
CN109798088A
|
|
A kind of permanent type bridge plug unsealed
|
CN109798087A
|
|
A kind of retrievable hanging packer of double packing elements
|
CN108397155A
|
|
A kind of closable hydraulic pressure opening sliding sleeve
|
CN108397154A
|
|
A kind of anti-hydraulic packer being hampered
|
CN107238495A
|
|
A kind of packer performance tester for testing
|
CN107178354A
|
|
Without differential drag fracturing technique and fracturing tool string in a kind of sleeve pipe
|
CN106639994A
|
|
Oil pipe gas injection and water drainage technique and tools thereof
|