• Xưởng sửa chữa máy địa vật lý

    Xưởng có nhiệm vụ chính là bảo dưỡng, sửa chữa và hiệu chỉnh các máy móc thiết bị điện tử phục vụ cho các đơn vị trong Xí nghiệp địa vật lý giếng khoan. Ngoài ra xưởng còn nghiên cứu đưa vào ứng dụng và phát triển công nghệ tin học trong công tác địa vật lý

  • Trung tâm Phân tích và Xử lý số liệu

    Có nhiệm vụ đánh giá chất lượng tài liệu do Xí nghiệp Địa vật lý thực hiện.

  • Đội công nghệ cao

    Khảo sát địa vật lý tổng hợp trong giếng đang khoan. Đo địa vật lý tổng hợp, bắn mìn.

  • Đội Kiểm tra công nghệ khai thác

    Có nhiệm vụ là đo khảo sát và kiểm tra công nghệ khai thác trong các giếng khai thác và bơm ép.

  • Đội Carota khí

    Đội Carôta khí có nhiệm vụ chính là khảo sát carota khí, cung cấp kịp thời các số liệu để xác minh trữ lượng, tình trạng các giếng khoan.

  • Đội thử vỉa

    Đội có nhiệm vụ thử vỉa ở các giếng khoan nhằm định hướng cho công tác khoan, xác định tình trạng và đo vỉa, cung cấp thông tin để xác định trữ lượng công nghiệp của giếng



Mud Logging Unit ALS-2


      1. Introduction:

The ALS-2 Mud Logging Unit provides highly automated monitoring of the entire drilling operation. More than 70 parameters can be measured, processed, displayed, printed and recorded simultaneously. The acquisition system also calibrates the received signals and checks the state of the sensors for electrical faults such as a cut cable or open circuit. In the case of malfunction, an alarm is activated immediately alerting the operator.

For data processing a totally new concept has been adopted based entirely on computer technology. The sensor signals are transformed into digital format and then distributed according to requirement. The data is supplied on screen monitors (two types of screen system exist, the “Alpha-numeric” and the “Graphic”) or intelligent interfaces in real-time or playback mode. Alarms can be placed on each parameter. Computerized printouts of desired parameters produce graphic charts of the progress of the well being drilled. In addition the database is continually recorded on magnetic storage support.

The ALS is a powerful tool that may be placed in the hands of those with responsibility for the drilling rig. Using many forms of data presentation in the logging unit, monitors or intelligent interfaces can be placed anywhere on the rig. These terminals are “operator friendly” and enable anybody who needs information to have it right there in front of him in real-time or replay mode, and to apply analysis programs if necessary.

Off-line processing: An offline workstation is part of the ALS-2. This workstation has the following main functions:

  •  Calibration of the sensors.
  • Off-line calculations:

- Overpressure

- Hydraulics (Bingham, Power Law and other models)

- Deviation survey analysis

- Surge & Swab

- Drilling bit optimization

- Bit performance and cost

- Kick control

- Gas ratio analysis + plots

  •  Data handling (graphic playback, log processing, import/export...)
  • Diagnostic functions and network management.
  • Reporting capabilities (word processing, graphics editor...)
2. Mudlogging equipment and services:

2.1 Mudlogging Unit:

Mudllogging unit for offshore operation, complete with:

  •  Air-condition System
  •  Working area for client
  •  Full UPS System to support all computers and data acquisition system
  •  Airlock/Escape Hatch/MCT Entry
  •  Pressurization system
  •  Safety Equipment
  •  Intercom system
2.2  Formation evaluation equipment:
  •  Binocular Zoom (10 x 30) microscope
  •  UV Fluoroscope
  •  Sample Drying Oven
  •  Geological Equipment and Chemicals
  •  Sample Processing Trays
  •  Shale Density
  •  Autocancimeter
2.3       Gas detection system:

The FID (Flame Ionization Detector) Gas Detector & Chromatograph is a well site gas detection and analysis system. It continuously analyses gases extracted from the degasser.

  • Measurement of total hydrocarbon gases in methane equivalents, with:
  •  Measuring range: 250 ppm -100 %
  •  Sensitivity: 200 ppm
  •  Accuracy: 100 ppm
  •  Calibration method: Manual
  • Automatic chromatographic analysis of gas components (from C1 to nC5 measured in 240 seconds), with:
  •  Measuring range: 30 ppm -100 %
  •  Sensitivity: 20 ppm
  •  Accuracy: 10 ppm
  •  Calibration method: Manual injection.

2.4   Sensors and parameters:

Continuous analog recording on colour recorders and digital display on colour monitor of:

  • Drilling rate, heave, depth, bit depth, TV depth, kelly height, hook height, footage, bit run, time on bit
  • Weight on bit, hook load and over pull
  • Individual pit volume and Totaliser (all active pits, trip tank and other pits)
  • Pump rate and Totaliser (Flow in pumps), Lag time
  • Standpipe Pressure, Well Head Pressure, Cement Unit Pressure
  • Rotary RPM and Rev counter
  • Mud temperature In/Out
  • Rotary Torque
  • Mud Flow Out
  • H2, H2S, CO2

2.5 Computer equipment

Computer equipment consisting:

  • Signal Conditioning Panel (SCP)
  • Data Acquisition Panel (DAP)
  • Real-time Monitoring Computer (RTM)
  • Real Time Graphic Computer (RTG)
  • Unit File Server (SVX)
  • Off-line Computer (TDX)
  • Real-time Printers
  • Off-line Printer
  • Repeater Monitor (for Coman & Rig floor)
2.6 Reporting:
  • Reporting Daily Geological/Drilling Reports
  • Reporting Daily Master Log/Over Pressure Log
  • Submission of Client Approved Master Log, Pressure Evaluation Log (D-exponent).
  • Submission of Client Approved Final Well Report at the end of each well.

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