Method for stopping loss of circulating fluid in well bores

• US 3,219,111 A
• Filed: 09/05/1962
• Issued: 11/23/1965
• Est. Priority Date: 09/05/1962
• Status: Expired due to Term

• Current Assignee: Arthur L. Armentrout
• Original Assignee: Arthur L. Armentrout
• Inventors: Armentrout, Arthur L.
• Application Number:
  US04/221,451
• Time in Patent Office: 1,175 Days
• US Class Current: 166/292
• CPC Class Codes: C09K 8/516 characterised by their form or by the form of their components, e.g. encapsulated material
• CPC Class Codes: Y10S 507/906 Solid inorganic additive in defined physical form

Claims

1. THE METHOD OF SEALING OPENINGS IN THE EARTH'"'"''"'"'S FORMATION TRAVERSED BY AND COMMUNICATING WITH A WELL BORE WHICH COMPRISES, SIMULTANEOUSLY INTRODUCING INTO THE WELL BORE A PUMPABLE FLUID AND AN AGGREGATE OF COMMINGLED GROUPS OF EXPANDED MARINE SHALE, THE GRANULES OF EACH GROUP BEING SUBSTANTIALLY THE SAME SIZE, THE VOLUME OF THE GRANULES OF EACH GROUP BEING APPROXIMATELY EQUAL TO THE VOLUME OF EVERY OTHER GROUP, EACH GRANULE HAVING KRUMBEIN INDICES OF SPHERICITY OF ABOUT .6 AND KRUMBEIN ROUNDNESS OF ABOUT .8, THE GRANULES OF EACH GROUP OF GRANULES BEING OF A SIZE WHICH WILL NOT FREELY MIGRATE THROUGH THE INTERSTICES ESTABLISHED BY THE GRANULES OF THE NEXT LARGER GROUP WHEN THE GRANULES OF THE NEXT LARGER GROUP ARE IN BRIDGING CONTACT WITH EACH OTHER AND WITH THE GRANULES OF SUCCESSIVELY LARGER GROUPS.