Download PDF | Shock Tool
The shock tool is preferably run next to the bit to keep the oscillating mass to a minimum, allowing the shock absorbing element to most effectively absorb accelerations and keep the bit on bottom. If a packed hole assembly is run, then the tool should be placed further up the string. This however, will reduce the effectiveness because of the larger oscillating mass.
Free vertical movement is assured by guiding the mandrel above and below the spline drive assembly. No lateral loads are taken on the drive assembly. The tool is manufactured from S.A.E. 4340 and 4145 quenched and tempered steel. The Wenzel Shock Tool does not use any temperature sensitive elastomers for shock absorption and may be used to 275 degrees fahrenheit with the use of optional seals for temperatures up to 450 degrees fahrenheit.
Shock Tool Specifications
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DIAMETER
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LENGTH
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THRU BORE
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APPROX. WEIGHT
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MANDREL PUMP OPEN
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TORSION FT. LBS.
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TENSILE YIELD
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BODY JOINTS TORQUE IN FT. LBS.
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3.5" (89mm)
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6' 6"
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1.00"
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300 lbs
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6 sq. in.
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35,000
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400,000
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8,000
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4.75" (121mm)
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10'
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1.50"
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465 lbs
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17 sq. in.
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45,000
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550,000
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11,000
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6.25" (157mm)
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10' 6"
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2.00"
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950 lbs
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17 sq. in.
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75,000
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720,000
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28,000
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6.5" (164mm)
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10' 6"
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2.00"
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950 lbs
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17 sq. in.
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75,000
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720,000
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28,000
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6.75" (172mm)
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10' 6"
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2.50"
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1100 lbs
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19.5 sq. in.
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95,000
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840,000
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35,000
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8.00" (203mm)
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10' 6"
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2.75"
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1700 lbs
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23.75 sq. in.
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125,000
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920,000
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50,000
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9.00" (229mm)
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10' 6"
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2.75"
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2000 lbs
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30.5 sq. in.
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155,000
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1,100,000
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60,000
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11.00" (279mm)
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12'
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2.75"
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3600 lbs
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47 sq. in.
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170,000
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1,250,000
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75,000
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*NOTE: Other tool sizes and thread connection specs. are available