US 12,442,264 B2
Borehole sand catcher
Philip Head, Sunningdale (GB); and Lawrence Hugh Burleigh, Tulsa, OK (US)
Assigned to FALLBACK LLC, Tulsa, OK (US)
Filed by FALLBACK LLC, Tulsa, OK (US)
Filed on Dec. 4, 2023, as Appl. No. 18/528,633.
Application 18/528,633 is a continuation of application No. 17/051,894, filed on Oct. 30, 2020, granted, now 11,867,011.
Prior Publication US 2024/0175330 A1, May 30, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. E21B 27/00 (2006.01); E21B 43/12 (2006.01); F04B 47/00 (2006.01)
CPC E21B 27/005 (2013.01) [E21B 43/121 (2013.01); F04B 47/005 (2013.01); E21B 2200/05 (2020.05)] 26 Claims
OG exemplary drawing
 
1. A method of collecting solids fallback in the tubing of an oil-producing borehole, the method comprising:
providing, fixed to and integral with the production tubing and comprising two or more baskets having an upward-facing opening to collect the solids fall back, wherein each basket partially occupies a portion of an inner cross-section of the tubing, leaving a portion of the inner cross-section of the tubing having an unrestricted flow path, the baskets, when considered in plan view along a longitudinal axis of the tubing, being distributed such that together they cover substantially the whole inner cross section of the tubing while leaving an unobstructed non-straight flowpath around the baskets; wherein the method employs an apparatus that does not induce fluid movement, does not reciprocate, and does not rotate, and is self-cleaning in the well without requiring retrieval to the surface.