CN109736781A
|
|
A kind of underground small size orientation with drilling measurement inserting tube
|
CN108040022A
|
|
A kind of bus coding and decoding device and method for measurement while-drilling instrument
|
CN108005638A
|
|
It is a kind of suitable for high temperature orientation survey with boring apparatus structure
|
CN108060920A
|
|
A kind of underground single bus is with brill gamma-spectrometry inserting tube
|
CN107508658A
|
|
System and its frame structure design method for logging data transmission system
|
CN107465399A
|
|
The computing device and method of Pump Impulse Noise fundamental frequency in well logging
|
CN104747170A
|
|
Magnetic positioning method for determining position of target point of drilling well
|
CN104196522A
|
|
Balancing piston seal assembly of mud pulser
|
CN104265278A
|
|
Method for eliminating pump stroke noise in logging-while-drilling well by using echo counteraction technology
|
CN104202041A
|
|
Phase-locked loop based downhole tool signal clock recovery method
|
CN104141487A
|
|
Circuit for improving vibration resistance of underground inclinometer by means of load impedance characteristic
|
CN104133982A
|
|
Elimination method of slurry pulse signal pump stroke noise
|
CN103091120A
|
|
Stroke testing tool for special purpose of underground pulse occurring tool
|
CN102840870A
|
|
Geometric error correction method for three-dimensional orthogonal direction sensors
|
CN102621595A
|
|
Debugging table for fluxgate of exploring tube
|
CN102607392A
|
|
Method and system for measuring inter-well distances and directions
|
CN102536217A
|
|
Positive pulse device for slurry under shaft
|
CN102581807A
|
|
Guiding assembly and disassembly structure and mounting and dismounting methods of central spindle and protective barrel of probe
|
CN102594168A
|
|
Rectification voltage-stabilization control circuit
|
CN102538787A
|
|
Digital orientation parameter measurement device
|