US 11,668,137 B2
Weight module for use in wellbore tool string
Christian Eitschberger, Munich (DE); and Thilo Scharf, Letterkenny (IE)
Assigned to DynaEnergetics Europe GmbH, Troisdorf (DE)
Filed by DynaEnergetics Europe GmbH, Troisdorf (DE)
Filed on Mar. 21, 2022, as Appl. No. 17/700,024.
Application 17/700,024 is a continuation of application No. 17/363,876, filed on Jun. 30, 2021, granted, now 11,313,180.
Claims priority of provisional application 63/168,676, filed on Mar. 31, 2021.
Prior Publication US 2022/0316283 A1, Oct. 6, 2022
Int. Cl. E21B 17/02 (2006.01); E21B 17/10 (2006.01)
CPC E21B 17/0285 (2020.05) [E21B 17/028 (2013.01); E21B 17/10 (2013.01)] 19 Claims
OG exemplary drawing
 
8. A weight module for use in a wellbore tool string, the weight module comprising:
a conductive body extending in an axial direction, the conductive body having a first contact portion provided at a first end of the conductive body and a second contact portion provided at a second end of the conductive body, opposite the first end in the axial direction; and
an insulating cover covering an outer radial surface of the conductive body and an axial end surface of the conductive body without covering the first contact portion,
wherein:
the first contact portion is in electrical communication with the second contact portion through the conductive body;
the weight module is configured to fit within a hollow interior of a weight module housing;
the insulating cover is configured to electrically isolate the conductive body from a weight module housing; and
the conductive body comprises a high-density material extending between the first contact portion and the second contact portion, having a density greater than steel.