Download - Sperry Sun_LWD New Technology
Sperry Drilling
New LWD Technology
Mike Dautel
Petrophysics Manager
Asia Pacific
Complete LWD Formation Evaluation
Directional
Sensors
Azimuthal
Gamma
Ray
Multi-Depth
Resistivity
Imaging
Azimuthal
Density
Neutron
Porosity
Multipole
Sonic
Formation
Pressure
Magnetic
Resonance
Pulser or
EM
Near Bit Gamma and Azimuthal Gamma Images
Formation Evaluation
Geosteering
High Resolution Imaging
Formation Evaluation
Density Imaging
T1 and T2 logging
Bound and Free fluids
Formation Pressure
Fluid ID and Samples
Compressional and Shear Slowness
Crossed Dipole Anisotropy
2
New LWD Technologies
GeoTap IDS
– Fluid Identification and Sampling
XBAT
– Crossed Dipole Azimuthal Sonic
GeoSharp
– All Mud Imager
3
GeoTap IDS – Fluid ID and Sampling
GeoTap IDS Benefits
Replace WL runs
Obtain samples sooner
Reduced pumpout times
– Less invasion
Obtain high quality samples
– Real-time Fluid ID
Obtain samples or FID in high angle / horizontal wells
– WL conveyance difficult or impossible
– Eliminate pilot holes
Large time and cost savings in high spread rate
operations
5
Rig Time Savings - Pumpout Time
1
10
100
1000
1 10 100
Invasion Time (hours)
Pu
mp
ou
t T
ime
(m
inu
tes
)
Base Case 1
Base Case 2
Leaky mudcake
Good mudcake
GeoTap IDS
6 ¾” tool for 8 ⅜” - 10 ¾” hole
11.2m - no sample collar
14.8m - 1 sample collar
Single Oval Pad Probe
150°C, 30kpsi
Fluid ID Sensors
Pressure, Temperature, Resistivity, Density
Optical coming
Multiple bubble points while pumping out
GeoTap IDS
100cc draw down chamber
Use existing wireline RDT bottles
1 liter PVT quality, N2 charged option
5 bottles / collar, 3 collars
IATA and DOT approved
Integrated collar; sample bottles field removable
Pumps on for fluid pump out and sampling
4000 and 8000 psi pumps
60 and 30 cc/sec
GeoTap IDS Hardware
Terminator Collar
Sample Collar (Optional)
Power Collar
Probe Collar
Oval Pad Extended
10
2 way communications with tool
Change test parameters downhole
Same unit used with GeoPilot Rotary Steerable drilling system
GeoSpan Down Link
Real-time tool control
12
Fluid Density Sensor
13
Sample Chamber QC
Non invasive QC at rig site
– Same as RDT
Ensure sample integrity
– Pressure
– Volume
– Estimate contamination
Fluid ID
– Density
– Compressibility
– Compare with downhole Fluid ID
Sample Chamber QC
Sample Chamber QC
GeoTap IDS Deepwater Example
BG Norway
– Exploration well
Drilled with LWD and GeoTap FTWD
– OBM
Hole conditions limited WL runs
GeoTap IDS run on a wiper trip
– Long invasion time
Real-time Pretests
X,
X,
X,
X,
X,
X,
X,
X,
TEST SUMMARY
PRESSURES:
Pstop1 X,762.5 (psig)
Pstop X,762.0 (psig)
Pexact X,762.0 (psig)
Phyd1 X,803.1 (psig)
Phyd2 X,810.2 (psig)
Pdd_start X,250.9 (psig)
Pdd_end X,724.9 (psig)
TEST PARAMETERS:
Tool Mode Normal
Toolface 37.3 (deg)
DD Volume 15.0 (cc)
DD Rate 1.0 (ccps)
QUALITY FACTORS:
Beta 23.60 (psig)
Alpha 1.00 (sec)
Sigma 0.70 (psig)
RESULTS:
Good Buildup Stability
Mobility: 89 (md/cp)
Quartz Pressure
Exact Curve
Real-time Pump Out and Fluid Samples
Pressure (psi)
Density (gm/cc)
Pump Rate (cc/sec)
XX,000
XX,800
XX,600
XX,400
XX,200
XX,000
XX,800
XX,600
XX,400
XX,200
X.X0 Q
uart
z P
ressu
re (
psia
)
X.X0
-0.10
Den
sit
y (
gm
/cc)
Pu
mp
Rate
(cc/s
ec)
40
50
60
70
80
90
100
0 5 10 15 20 25 30 35 40
Time (minutes)
Conta
min
ation %
Density Data
Contamination
Real-Time Contamination Estimate 33 minutes for 50% Contamination
Sample 2
Sample 1
Density (
gm
/cc)
0.X57
0.X50
Real-Time Contamination Estimate 3 hours additional pumping needed for 5%
0
10
20
30
40
50
60
70
80
90
100
0 50 100 150 200
Time (minutes)
Co
nta
min
atio
n %
Density Data
Contamination
Density (
gm
/cc)
0.X57
0.X50
5% Contamination
XBAT Azimuthal Sonic
QBAT Overview
Provides wireline-quality compressional
and shear measurements in fast and
slow formations
Hole sizes from 6” to 36”
Used for porosity determination, seismic correlation, and wellbore stability applications
Provides cased hole logs and identify fractures
Monopole, dipole and quadrupole modes
– 2 firings
– Programmable source frequencies
24
Azimuthally sensitive – creates azimuthal images for geosteering
and acoustic anisotropy
– Fast and Slow Shear Slowness and anisotropy azimuth
4 azimuthal transmitters, 4 azimuthal arrays of receivers (6 in each
array)
4 azimuthal acoustic calipers
Up to 8 firing modes
Broad Band Source
6 ¾” and 8” tools available; 4 ¾” and 9 ½” in testing
XBAT Azimuthal Sonic
Cross Dipole Firing
26
LWD Cross Dipole
27
Azimuthal LWD Sonic Image
28
Fast and Slow Shear
29
4-axis Ultrasonic Calliper
Accounting for tool position
© 2011 HALLIBURTON. ALL RIGHTS
RESERVED.
Azimuthal Sonic Geosteering
32
85 usec/ft 60 usec/ft
GeoSharp All Mud Imager
GeoSharp All Mud Imager
Integrated OBM and
WBM Imager
Resistivity
– Geology and bedding
Ultrasonic
– Fractures, vugs, borehole
geometry
– Dynamic focussing
– Motion compensation
6 ¾” tool for 8 ½” hole
Acoustic and Resistivity Imaging
Dual ultrasonic transducers (350 kHz)
Acoustic image resolution ~0.15 inches
Resistivity image resolution ~1.0 inches
Requires 10:1 ratio between mud resistivity & formation resistivity
Acoustic and resistivity images complement each other
36
Dynamic Transducer Focusing
Dynamic Transducer Focusing
LWD vs. WL Ultrasonic Images
High Resolution Ultrasonic Image
39
GeoSharp Ultrasonic Image
Stabilizer impression in borehole wall
ft 864
ft 865
1 inch
AFR GeoSharp AMI CAST-F
AFR GeoSharp AMI CAST-F
ft 873
ft 874
1 inch
Open Fracture
LWD Ultrasonic and Resistivity
OBM Resistivity Image
42
Thank You