Designing and drilling extended reach wells. Part 4

Journal Article · Wed Mar 01 04:00:00 EST 1995 · Petroleum Engineer International

OSTI ID:39901

Hill, T H; Guild, G J; Summers, M A

Several PC-based computer programs are available to estimate the tension and torsion loads for a variety of drilling operations in an extended reach well. Since the input data changes with each hole section, the entire process must be repeated, usually at the maximum depth, for each hole section. Drillstring loads will vary widely depending on the extended reach (ER), operation being performed, so a summary for each hole section can be useful. The example load summary provided shows the torque-drag program output (applied loads) at the surface during each of several typical operations in a 16-in. hole section of a North Sea ER well. The applied loads are then compared to the drillstring load capacities for drill pipe tube and tool joint (in this example, loads range from 6% to 59% of capacity). By providing at-a-glance pictures of the magnitude of drillstring loads and load capacities, torque-drag summaries focus attention on the components most likely to fail from overstress and the operations during which such failures are more probable. Furthermore, summaries allow comparison of alternative drillstring components based on percent of capacity utilized, so the least loaded (least likely to fail) components can be selected.

• OSTI ID: 39901
• Journal Information: Petroleum Engineer International, Journal Name: Petroleum Engineer International Journal Issue: 3 Vol. 67; ISSN 0164-8322; ISSN PEEID4
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
03 NATURAL GAS
COMPUTER-AIDED DESIGN
DIRECTIONAL DRILLING
DRILLING EQUIPMENT
NATURAL GAS WELLS
OIL WELLS
STRESS ANALYSIS