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Page 5 of 18 |
Drill-Data System DDS
The following parameters are monitored on the Drill Data
System: -
1.
Drilling RATE – ROP and Drilled Depth
2.
Stand pipe Pressure - SPP
3.
Casing Pipe Pressure - CPP
4.
Torque (Rotary)
5.
RPM (Rotary)
6.
Hook Load/WOB
7.
SPM
The
detailed specifications are listed below: -
1.
Drilling
Rate (In mts/hr and
mins/mtr)
and Drilled Depth with Kelly
Position
|
Accuracy |
: |
+ 0.1% of full scale |
|
Range |
: |
0 - 8000mts. |
|
Recording
Interval |
: |
0.25mts., 0.5,
1.0mts. |
|
Sensor |
: |
Ex-Proof
Proximity Sensor or Rotary Encoder Three independent encoder type sensors
suitable for mounting on Draworks drum, Crown Block and Geolograph are
provided. |
|
|
·
Block Height and block speed are also monitored. ·
Three sensors are provided to minimize down time of ROP system and any
one of the sensors can be used for sensing ROP. Change over is done in
software within seconds. ·
Parameters recorded and displayed are ROP in min./
meter, Meters /hr, feet/hr., Instantaneous ROP, Average ROP. ·
Programmable Drill Break Alarm |
|
|
Rotary Encoder Heave
Sensor and Heave compensation as applicable are provided for offshore
operation. |
2. Stand Pipe
Pressure (SPP)
|
Sensor |
: |
Piezo resistive /
capacitance. |
|
Mounting |
: |
Standpipe Manifold |
|
Accuracy |
: |
+ 0.075% |
|
Sensitivity |
: |
0.5 psi |
|
Response |
: |
100ms |
|
Stability |
: |
3.5 psi
for 5 years |
|
Range |
: |
0 –
10,000 psi. or 700 kgs/cm2 |
|
Linearity |
: |
0.5
% |
|
Approvals |
: |
Ex-Proof
Certified for |
|
Outputs |
: |
Recorder,
Monitor, Printer |
3. Torque (Rotary)
|
Sensor |
: |
Electrical (Hall effect) |
|
Mounting |
: |
On Draw-works or |
|
Accuracy |
: |
+ 1% |
|
Sensitivity |
: |
1 Amp |
|
Range |
: |
0 – 1000 Amps or Klbs. |
|
Approvals |
: |
Intrinsically Safe suitable for Class I |
|
Outputs |
: |
Recorder, Monitor, Printer |