|Publisher||Society of Petroleum Engineers||Language||English|
|Content Type||Conference Paper|
|Title||Evolution of Drilling Programs and Complex Well Profiles Drive Development of Fourth-Generation Hardband Technology|
Alvaro Chan, SPE, Dan Hannahs, SPE, Michael J. Jellison, SPE, Grant Prideco; Michael Breitsameter, Daniel J. Branagan, The Nano Steel Company; Harvey Stone, Noble Drilling (Canada) Ltd.; and Greg Jeffers, Nabors Drilling USA LP
IADC/SPE Drilling Conference, 4-6 March 2008, Orlando, Florida, USA
2008, IADC/SPE Drilling Conference
|1.4.1 Drilling and Well Control Equipment
Initially, hardband was designed only to protect drill stem elements from rotational wear and to extend their life. Casing wear was not an issue for vertical holes. As wells became deeper and deviated, the first casing friendly hardbands were developed. Today, water depth is increasing and well target depths and step-outs are being extended. The nature of these ultra-deep, ultra-deep water and ERD well designs is further increasing the time the drill stem is rotating inside casing, increasing the demands on hardband. Today, the focus is on protection of both casing and drill stem components in both cased and open hole conditions.
The result of this 36-month development program is a fourth-generation spall resistant, high-performance hardband. The innovative laboratory testing program surpasses the earlier DEA 42 methodology and provides repeatable and accurate prediction of the hardband’s wear performance. The test concludes with field trials.
Advanced nanotechnology and a systematic design approach enabled the manipulation of material properties to yield a spall-resistant hardband that offers superb drill stem wear resistance and casing wear protection while reducing friction. These materials are ideally suited for today’s long and complex drilling programs where extended drilling through casing is required.
The need to reach deeper more remote hydrocarbon reservoirs has pushed the limits of traditional drilling programs. Today’s drilling programs require deeper and more extended reach wells. Since the oil industry’s beginnings drill pipe has been used to drill wells and more recently it has had the need to evolve its material requirements, mechanical properties, capabilities, and performance as a direct response to the evolution of the newer drilling challenges. The shallow, easy formations are becoming depleted and the deeper more remote and challenging reservoirs are all that is left to exploit.
The evolution of these complex well designs has brought with it economical challenges to those responsible for exploiting them. In order to reach deeper more remote reservoirs, the wells and casing programs have had to adjust. Longer wells mean longer rotational hours for drill pipe inside casing. With horizontal and extended reach wells, this only means there are more negative factors affecting drill pipe life; wear due to torque, drag, stick-slip, higher RPM, vibrations and high torque down hole motors.
|File Size||2,945 KB||17|