PIONEER ENERGY
SK-TMWD Pro+AziR LWD
SK-TMWD Pro+AziR Measurement Point Length
TMWD Pro+AziR Measurement Point Length

TMWD Pro+AziR Azimuthal resistivity Log while drilling has the functions of boundary detection, gamma imaging, compensated resistivity, annular pressure (ECD), temperature, wellbore orientation, vibration, and dynamic wellbore inclination measurement. Suitable for precise geological guidance operations in deep and ultra deep wells, it can be widely used for exploration and development of shale oil and gas, tight oil, thin layers. It is a powerful tool for real-time evaluating the properties of drilling formations and improving the drilling ratio at sweet spots.

Product Features 

  • Real-time boundary detection and positioning to ensure precise geological guidance 
  • Ultra low noise ratio circuit, direct sampling technology ensures measurement speed and accuracy 
  • Real-time imaging function, display the distance and direction of the boundary 
  • Multi parameter measurement, providing stick-slip, BHA RPM, and ECD data to ensure drilling safety High temperature and high pressure resistance（175℃，20000psi） 

  • Compatible with Tensor standards, can be customized with third-party MWD, LWD, RSS

Special Technology

  • The 4 transmitter & 3 receiver vertical orthogonal antenna system structure and detection method, achieving precise detection of geological boundaries
  • Unique boundary display interface, visually displaying the distance and direction of the drill bit relative to the boundary of the oil and gas layer
  • The friendly visual output interface that intuitively identifies the drilling trajectory of the drill bit relative to the boundary of the oil and gas layer, facilitating timely adjustment and ensuring continuous drilling in the oil and gas layer
  • Modular design, using Qbus and RS485, and matching different drilling measurement instruments according to usage conditions
  • Downlink technology enables monitoring and change of working modes, improving drilling conditions applicability
  • Dynamic well inclination measurement technology reduces the time required for inclination measurement
  • Adaptive filtering and denoising technology to improve decoding success rate and environmental adaptability
  • Automatic switching technology between sliding and rotating sequences to improve transmission efficiency
1.Mechanical Specificaton
Hole size8 1/2〞-9 1/2〞
Tool OD6.75 in
Tool ID2 in
Upper connection4-1/2 IF BOX
Lower connection4-1/2 IF BOX
Antenna long spacing38.5 in
Antenna short spacing17.5 in
Receiving antenna spacing7 in
Azimuth antenna spacing28 in
Main power supplyMud driven turbine generator
2.Operating norms and limitations
Mud typeWBM/OBM
Mud pump14.2-47.3 L /s
Max. Temperature-Operating175℃
Max.Temperature-Survival185 ℃
Max.Pressure20000 Psi
Mud Sand Content<1%
Vibration25G RMS 30-500 H
Shock1000G/0.5millisecond
Make Up Torque40600-44600 N²m
Max.Dogleg18(Sliding) 9.8(Rotating) °/30m
Notes: The maximum wellbore dogleg degree that the tool passes through is for reference only, and the actual size varies depending on the BHA structure.
3.Sensor parameter
MWD
Sensor type: Three-axial Fluxgate & accelerometer
RangeResolutionAccuracy
Inclination0-180°0.05°±0.1°
Dynamic inclination0-180°0.05°±0.2°
Azimuth0-360°0.18°±0.5°
Dynamic azimuth0-360°0.2°±2°
Annular pressure
Range0-25000 Psi
Accuracy±24 Ps
4.AziR measured Parameters
2MHZ
Phase Difference (Long Space)RPFHRange :0.2-3000ohm-m ±2%(0.2-20ohm-m) Accuracy:±1 mmho/m(20-3000ohm-m)
Phase Difference (Short Space)RPFHRange :0.2-1000ohm-m ±2%(0.2-10ohm-m) Accuracy:±1 mmho/m(10-1000ohm-m )
Attenuation (Long Space)RPFHRange :0.2-50ohm-m ±5%(0.2-16ohm-m) Accuracy:±3 mmho/m(16-50ohm-m)
Attenuation (Short Space)RPFHRange :0.2-50ohm-m ±5%(0.2-8ohm-m)) Accuracy:±6 mmho/m(8-50ohm-m)
400KHZ
Phase Difference (Long Space)RPFLRange :0.2-500ohm-m ±2%(0.2-10ohm-m) Accuracy:±2 mmho/m(10-500ohm-m)
Phase Difference (Short Space)RPFLRange :0.2-250ohm-m ±3%(0.2-5ohm-m) Accuracy:±6 mmho/m(5-250ohm-m)
Attenuation (Long Space)RPFLRange :0.2-10ohm-m ±5%(0.2-3ohm-m) Accuracy:±10 mmho/m(3-10ohm-m)
Attenuation (Short Space)RPFLRange :0.2-10ohm-m ±5%(0.2-3ohm-m) Accuracy:±15mmho/m(3-10ohm-m)
5.AziR and Gamma sensor specifications
AziR
Maximum boundary detection distance4.6 m
Azimuthal signalTwo curves(Real-time) Sixteen curves(Memory)
ImagingProvide real-time/memory far and near resistivity boundary detection imaging
Provide real-time/memory resistivity imaging
AGR
Sensor typePMT + NaI crystal
Range0-1000 API
Accuracy±5%
ImagingSixteen sectors(Memory) Real-time gamma imaging
6.Investigation depth / Vertical Resolution
Investigation depth (in)Vertical Resolution (in)
1 ohm-m10 ohm-m100 ohm-m1 ohm-m10 ohm-m100 ohm-m
RPNH11172391316
RPHL152126121617
PANH183373244875
RANL27571414265104
RPFH16274291322
RPFL233750132025
RAFH2646912363118
RAFL397316346104162
The relationship between azimuth resistivity boundary detection distance and nearbed and remote resistivity

Application of SK-TMWD Pro+AziR

AziR Azimuthal resistivity logging tool while drilling adopts advanced data compression algorithms to extract the
characteristics of the 16 sector formation response signals collected during rotation and compress them. Real-time
transmission is carried out through MWD, and the powerful analysis and mapping software for high-quality data recovery
makes real-time images almost as excellent as in memory data images, fully meeting the key and challenging tasks of
reservoir navigation and formation evaluation.

  • Using Aziexpress® to geological guidance of a horizontal wel in a tight oil block in a eastern oilfield.
  • The main geological objective of this wellis to arrange the trajectory 1 meter away from the upper boundary, in a sweet parof the oil layer, avoiding the water layer.

  •   During drilling, measured the resistivity of the upper covering layer was 2.8       ohm meters,and made the traiectory about 0.8 meter away from the upper boundary,which met the requirements of design.

  • During geological guidance , Aziexpress® measured the wellbore near the lower boundary twice at a depth of 5740 meters and 5780 meters, and the reseroir will drill out downwards according to the trend. After the geologist's comprehensive assessment of varous information, they recognized the azimuth resistivity curve, and then decision was made to increase the inclination.
  • Curve shows, at 5770 ms, the azimuth resistivity was responsed 10 meters in advance, and the wellbore will be drilling out downwards of the reservoir. At 5780 m, polarization occurs in the compensated resistivity, further approaching the boundary. At 5785 m, inclination increase to 93 degrees. At 5805 m, the wellbore returns to the middle position of the reservoir.

  • The final evaluation shows that , the wellbore passes through 100% in the reservoir and receiving praise from Party A.