Oilfield Team
Oil & Gas Books Store, Petroleum Engineering Books
  • Main
  • News
  • Photo
  • Video
  • Oilfield Jobs
  • Learning Section
  • Oil & Gas Calculator

Well Monitoring System

2017.05.07
7 539

An optimal drilling operation requires close control over a number of parameters.Even though the drilling program may have recommendations related to drilling parameters, it is mandatory that rig personnel (e.g., driller, drilling supervisor, drilling and mud engineer) keep track of the operation development at all times in order to make necessary adjustments and to quickly detect and correct drilling problems.

A modern rig will have devices that display and simultaneously record most of the important parameters related to the drilling operation. Parameters that cannot be determined automatically, such as mud properties, will be measured, recorded, and controlled constantly as well. Some of the most important parameters include:

  • Well depth
  • Weight on bit
  • Rotary speed
  • Rotary torque
  • Pump pressure
  • Pump rate
  • Fluid-fl ow rate
  • Flow return
  • Rate of penetration
  • Hookload
  • Fluid properties (e.g., density, temperature, viscosity, gas and sand content, salinity, solids content)
  • Pit level

Monitoring of these important parameters, together with reliable historical records of previous similar operations, will assist the driller in predicting and detecting possible drilling problems. Monitoring the mud system is an important task that must be fulfi lled to maintain well control. The mud gives warning signs and indications of kicks that can be used to reduce the severity of the kicks by early detection, avoiding a large influx of gas into the wellbore. Additionally, if the system is properly monitored, other drilling problems such as lost circulation can be minimized.

Moreover, good records of various aspects of the drilling operation also can aid geological, engineering, and supervisory personnel. Today, modern rigs carry centralized well-monitoring systems that can be housed in the engineer’s office and/or in the geologist’s offi ce at the rigsite. Besides, if desired, advancements in satellite communications allow installation of monitoring systems in places far from the rigsite.

These monitoring units provide detailed information about the formation being drilled and the fl uids being circulated to the surface in the mud, and they centralize the record keeping of drilling parameters. The mud logger carefully inspects rock cuttings taken from the shale shaker at regular intervals and maintains a log describing their appearance. Additional cuttings are labeled according to their depth and are saved for further study by the paleontologist. The identifi cation of the microfossils present in the cuttings assists the geologist in correlating the formations being drilled. Gas samples removed from the mud are analyzed by the mud logger using a gas chromatograph. The presence of a hydrocarbon reservoir often can be detected by this type of analysis.

With the development of downhole tools specially designed for well inclination and direction control, operations in directional wells became much more efficient. These tools are run together with the BHA and will constantly send information to surface regarding the position of the well. Measurement-while-drilling (MWD) tools normally use a mud pulser that sends information to the surface by means of coded pressure pulses in the drilling fluid contained in the drillstring. Chapter 8 provides information on MWD equipment.

 

 

Related Posts

5 Tips For Oil And Gas Pipeline Maintenance
2023.03.16
101
5 Tips For Oil And Gas Pipeline Maintenance
Oil and gas products are very volatile. Therefore, it is essential to ensure they are transported sa…
Completion and Workover Fluids
2023.03.06
132
Completion and Workover Fluids
Completion and workover fluids are any fluids used in the completion of a well or in a workover oper…
Stay Ahead of the Curve: The Latest Trends in Oil and Gas Marketing
2023.02.28
268
Stay Ahead of the Curve: The Latest Trends in Oil and Gas Marketing
As an oil and gas sales professional, staying on top of the latest trends and best practices is esse…
Improvement of MWD Operational Efficiency
2023.02.08
274
Improvement of MWD Operational Efficiency
The most important component of this topic is the sensor. Even though sensors have been used to meas…
Market quotes are powered by TradingView.com
© Oilfield Team, 2023
About Us  | Contact Us  | Privacy Policy  
Made in studio Zuber