Specifications

1.MPAL/Multi-Pole Array Acoustic Logging Tool
2.High quality, competitive price and delivery fast
3.made in China

• Product Name:
• MPAL/Multi-Pole Array Acoustic Logging Tool
• Product Explanation:
• MPAL uses multiple composite modes to perform monopole and dipole array acoustic logging and dipole S-wavelet direct logging in open hole and cased hole. The parameters such as P-wave, S-wave and Stoneley wave slowness of soft and hard formations can be directly extracted from the measured data and are used in geologic evaluation of reservoir, including lithologic identification, rock mechanics characteristic prediction, formation porosity calculation and permeability estimation etc.

• Product types and specifications:

   

  Dimensions and Ratings

  Max Temperature:175℃	Max Pressure:140MPa
  Max OD: 104mm	Min Hole Diameter: 114.3mm
  Length: 8.33m	Max Hole Diameter: 533.4mm
  	Weight: 320kg

   
  Borehole Conditions

  Wellbore Fluid: Brine√, Fresh Water√, OBM√, Air×

  Recommended Max Logging Speed: 250m/h (Expert Mode);375m/h(Normal Mode);600m/h(Digital Acoustic);

  Tool In-hole Position: Centralized√, Decentralized×

   
  Hardware Features

  Type of power supply: piezoelectricity Type of probe: piezoelectricity

  Space between sensors: 152mm( 6inch)

  Width of transmitted pulse: Monopole, quadrupole : 30μs; dipole: 200μs

  Digitalization intervals: 4μs/ sample, 8μs/ sample, 12μs/ sample, 16μs/ sample & 32μs/ sample

  Sampling rate of each sensor: 8 channels

   
  Main Specification

  Max Diameter/ Tool OD	10.4 cm/9.2 cm
  Quantity of receiving converter	32 in 8 groups (able to receive cross-dipole)
  Space of receiving converter	6in (15.24cm)
  Band width of receiving converter	0.5~30kHz
  Quantity of receiving converter for monopole	1
  Band width of monopole transmitter	0.5~20kHz
  Quantity of receiving converter for dipole	2 (inter-cross)
  Band width of dipole transmitter	0.3~5.0kHz
  Quantity of receiving converter for quardrupole	1
  Band width of quardrupole transmitter	0.5~20kHz
  Min spacing of monopole-like	8.50ft (2.59m)
  Min spacing of monopole with full waveform	12.00ft (3.66m)
  Min spacing of dipole	10.25ft (2.82m)
  Min spacing of quardrupole	8.50ft (2.59m)
  Data Acquisition Channel	8 channels concurrently
  A/D Resolution (Digitalization Precision)	14 Bits
  Sampling rate:	4, 8, 16, …, 64μs selectable
  Sampling Depth	128, 256,…, 2048 points selectable
  Simulative Wave-filter Frequency:	20~260kHz

   
  
  
  Measurements

  Vertical resolution: 20 samples/m

  Measuring Depth: one wave length in each mode

  Sensitivity: 15cm

  Accuracy: 14 Bits

  Repeatability: error ±3%

  Main Log: tcn (Near monopole P-wave differential time)

  Auxiliary Logs: Relative orientation, Inclinati

   

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