Well logging instrument is a key unit for oil well logging system, used for collection and transmission of well formation information. The high-reliability well instrument we developed is a update new generation product for numeric control well logging instrument, and the performance is leading at home.
The present product is the electric well logging instrument, its electronic circuit first adopts multi-probe shared electronic circuit technology, and it can connect continuous dipcompass, high-resolution sound wave, two-sided and dual induction probes for multi-probe combined well logging. It adopts secondary integration of electronic circuit, rugged circuit design (the operating temperature for electronic circuit up to +175℃ and the pressure up to 140MPa) and monolithic microcomputer control technology to guarantee its high reliability, high integration and intelligence. The well instrument adopts 3-bus communication mode, constitutes 100kb/s data communication transmission system together with cable telemeter, and it is digital well logging instrument at the highest national communication speed at present.
High-reliability well instrument in the mode
of multi-probe
shared electronic circuit is a key unit to
construct
a fast well logging platform system and high
and new
tech developing trend for well logging as
well. It meets
more and more requirements for horizontal and
highly-deviated
well logging, and there is much prospect in
application.
Depth Measuring System
The depth measuring
instrument is one of important units in the
well logging
system, also used for depth/length measurement
in other
fields. SDDP-A depth measuring system we
developed takes
embedded PC104 structure computer as a core,
adopts
large-scale programming devices CPLD with
high-end configuration
such as EL display screen and water proof
rugged keyboard,
featuring with strong functions, menu
operation and high
reliability, exported to America as auxiliary
equipment
of Excell-2000 system from American
Halliburton Company.
Functions:
(1) 3-way code wheel depthsignal receiving
and processing
function
(2) Magnetic mark receiving and adding
function
(3) Muliple cable tension sensor signal
collection and
scale function
(4) Casing collar signal (CCL) collection
function
(5) Display and overrun warning function
(6) Parameter configuration function
(7) Tension overrun brake function
(8) GPIB communication function
(9) Wellhead depth display output
Well Logging Computer System
The system inherits mature technology of well logging computer system we’ve developed for year, and introduces world-advanced imaging well logging technology from American Halliburton Energy Services. Besides complete CJX-5B system functions, it can adapt complete conventional well instruments and imaging well logging instruments of DITS series in Halliburton Excell-2000 system, so it has complete imaging well logging functions such as sonic imaging, electric imaging and nuclear magnetic resonance and the extended functions of Halliburton new generation information well logging system --- INSITE system as well. It adopts network architecture and modular combination design, and it’s a new generation international advanced well logging computer system.
System configuration:
The system consists of interface cabinet, display console and power supply console. The main configuration is dedicated rugged computer, 19" rugged LCD, single graphic plotter, Tektronix 100MHz liquid crystal oscillograph, integrated interface box, signal conversion box, perforation coring panel, D4MP panel, special AC power supply, special DC supply, well instrument power supply box, power supply control panel, etc.
CNTT - 24/03/10