US 11,867,011 B2
Borehole sand catcher
Philip Head, Sunningdale (GB); and Lawrence Hugh Burleigh, Tulsa, OK (US)
Assigned to Fallback LLC, Tulsa, OK (US)
Appl. No. 17/051,894
Filed by FALLBACK LLC, Tulsa, OK (US)
PCT Filed Apr. 30, 2019, PCT No. PCT/GB2019/051200
§ 371(c)(1), (2) Date Oct. 30, 2020,
PCT Pub. No. WO2019/211600, PCT Pub. Date Nov. 7, 2019.
Prior Publication US 2021/0164310 A1, Jun. 3, 2021
Int. Cl. E21B 27/00 (2006.01); E21B 43/12 (2006.01); F04B 47/00 (2006.01); B23K 26/03 (2006.01); B23K 26/38 (2014.01); H03K 5/24 (2006.01)
CPC E21B 27/005 (2013.01) [E21B 43/121 (2013.01); F04B 47/005 (2013.01); B23K 26/032 (2013.01); B23K 26/38 (2013.01); E21B 2200/05 (2020.05); H03K 5/24 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A downhole apparatus to collect solids fallback in the tubing of an oil producing borehole comprising two or more baskets to collect the solids fall back, 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 longitudinal axis of the tubing are 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 a base of each baskets includes a valve.