Shock absorbers - Are they necessary
The economic benefits of running a shock absorber seem evident from their growing use in oil and gas drilling operations. However, some controversy still exists over when they should be used, how to get the greatest benefit from them, and whether there are some negative effects such as hole deviation associated with the usage of some shock absorbers. Extensive experience in recent years has included results with a wide variety of shock absorber designs in the full range of hole depths and sizes. The results show that lateral stiffness of the tool, the type of spring or other energy absorption system, and tool length have a significant influence on shock absorber performance. The energy absorption system and its location in the drill string, in conjunction with the type of bottom hole assembly design, bit selection, and formation characteristics, determine whether the maximum benefits possible from the shock absorber are attained. Major benefits from proper use of the appropriate shock absorber are longer bit life, higher drilling rates, longer drill-string life, reduced hazard from bending fatigue of the threaded connections in the drill string, and reduced wear on the rig equipment. These all result in a significant reduction of the overall drilling costs. Guidelines for shock absorber selection, placement in the drill string, and operating practices which yield the greatest overall benefit from the use of a shock absorber in oil field drilling are described. Ultimately, the decision to use a shock absorber will be based on economics. Does the use of a shock absorber reduce the overall drilling cost.
- Research Organization:
- Craig Security Div., Dresser Industries
- OSTI ID:
- 5499348
- Report Number(s):
- CONF-830203-
- Journal Information:
- Soc. Pet. Eng. AIME, Pap.; (United States), Vol. IADC/SPE 11406; Conference: IADC/SPE drilling conference, New Orleans, LA, USA, 20 Feb 1983
- Country of Publication:
- United States
- Language:
- English
Similar Records
Use of Cutting-Edge Horizontal and Underbalanced Drilling Technologies and Subsurface Seismic Techniques to Explore, Drill and Produce Reservoired Oil and Gas from the Fractured Monterey Below 10,000 ft in the Santa Maria Basin of California
Proper nozzle location, bit profile, and cutter arrangement affect PDC-bit performance significantly
Related Subjects
03 NATURAL GAS
NATURAL GAS WELLS
WELL DRILLING
OIL WELLS
SHOCK ABSORBERS
DESIGN
PERFORMANCE
SIZE
TECHNOLOGY ASSESSMENT
BOREHOLES
DEPTH
DRILL BITS
DRILL PIPES
ECONOMIC ANALYSIS
EFFICIENCY
OPERATING COST
OPERATION
SERVICE LIFE
CAVITIES
COST
DIMENSIONS
DRILLING
DRILLING EQUIPMENT
ECONOMICS
EQUIPMENT
PIPES
WELLS
020300* - Petroleum- Drilling & Production
030300 - Natural Gas- Drilling
Production
& Processing