Cathedral Energy Services has found success providing innovative solutions in the horizontal and directional drilling services sector
We pride ourselves on the ability to provide equipment designed and built with quality and as the determining factor
Completion & Production Testing
Cathedral Energy Services has built a reputation for providing high-end equipment for production testing and completion services
Cathedral Energy Services is committed to providing its customers with superior customer service. Please contact our team in a manner that suits you best.
Measurement While Drilling
Measurement While Drilling ("MWD") systems are installed in the drill string to provide real time measurements of basic trajectory parameters such as inclination, direction, tool-face and temperature. Additional sensors such as pressure, gamma-ray and resistivity may be added depending upon the specific application.
MWD tools consist of three basic sections:
- Power Supply - Most tools are powered by lithium batteries or in some cases down-hole generators (turbines).
- Sensor Section - Hole trajectory is measured by a sensor stack that has three accelerometers and three magnetometers. The inclination and roll (gravity tool-face) of the tool is made by gravity based measurement devices called accelerometers. Simply stated, they can be considered to be an electronic plumb-bob. Magnetometers measure the earth’s local magnetic field. Combined with inclination sensors the tool can provide a reference direction to magnetic north. This is corrected for true north by adding the localized value for magnetic declination. Other sensors such as pressure, gamma-ray, and resistivity are typically housed in separate dedicated tool sections.
- Transmitter - Current MWD tools transmit in two basic manners, by sending pressure waves through the drilling mud (mud pulse) or by transmitting electromagnetic (EM) signals through the earth to surface.
The new FUSION MWD System advances MWD technology by combining the best of Cathedral’s existing MWD systems with new technologies that enhance performance and provide operators with additional options not found on standard systems. The FUSION MWD System provides both electromagnetic ("EM") and positive pulse ("P+") telemetry option, as well as Logging while drilling ("LWD") capabilities including not only gamma ray, but also the latest in resistivity tool technology. For complete details, please download the product brochure.
The EM MWD tool is a wireless MWD System which utilizes low frequency current-loop signals to communicate data to the surface.
To learn more about the advantages of EM systems, please click here.
Mud Pulse Systems
Mud pulse tools operate by either opening or closing a valve in the tool that creates either a pressure surge (positive pulse) or drop (negative pulse). Mud pulse systems are a reliable transmission method, to learn more about mud pulse click here.
Gamma ray sensors measure the natural radioactive emissions from isotopes of potassium and the uranium and thorium series contained in, or absorbed into the mineral components of surface rocks. For more information on gamma ray sensors, please click here.
The symmetrical, performance-enhancing design of the Resistivity system and the centrally located antennas provide real-time compensation eliminating invasion effects due to measurement delays, and improve accuracy through cancellation of variations in receiver channels. The Resistivity system is effective in all mud types and provides a range of transmission formats. High resolution data can be stored downhole, retrieved and processed as required.