US 12,331,852 B2
Seal system for annular components
Gareth Brown, Ellon (GB); Ross Stevenson, Sugar Land, TX (US); Kody Carrillo, Sugar Land, TX (US); and Ian McDaniel, Houston, TX (US)
Assigned to Schlumberger Technology Corporation, Sugar Land, TX (US)
Appl. No. 18/253,608
Filed by Schlumberger Technology Corporation, Sugar Land, TX (US)
PCT Filed Sep. 23, 2021, PCT No. PCT/US2021/051719
§ 371(c)(1), (2) Date May 19, 2023,
PCT Pub. No. WO2022/108656, PCT Pub. Date May 27, 2022.
Claims priority of provisional application 63/198,876, filed on Nov. 19, 2020.
Prior Publication US 2024/0011562 A1, Jan. 11, 2024
Int. Cl. F16L 15/00 (2006.01); E21B 17/042 (2006.01); E21B 33/12 (2006.01)
CPC F16L 15/003 (2013.01) [E21B 17/042 (2013.01); E21B 33/1212 (2013.01); F16L 15/004 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A seal system, comprising:
a first annular component comprising a radially-outer surface with a first threaded portion and a first sealing portion, wherein the first sealing portion comprises a first angled surface that is oriented at a first angle relative to a vertical axis;
a second annular component comprising a radially-inner surface with a second threaded portion and a second sealing portion, wherein the second sealing portion comprises a second angled surface that is oriented at a second angle relative to the vertical axis, the first angle and the second angle are between 5 and 25 degrees, the first angle is about 1 to 10 degrees less than the second angle, and lengths of the first angled surface and the second angled surface are within 2 to 20 percent of an inner diameter of the first annular component; and
an annular collar disposed at least partially about the second annular component, wherein the second annular component is radially between the first annular component and the annular collar, the annular collar comprises a first radial protrusion that axially abuts against a second radial protrusion of the second annular component, the annular collar comprises a third threaded portion separate from the first threaded portion and the second threaded portion, and the second radial protrusion is disposed axially between the first radial protrusion and the third threaded portion;
wherein the first annular component and the second annular component are configured to threadably couple to one another via the first threaded portion and the second threaded portion and to form a metal-to-metal seal against one another via the first angled surface and the second angled surface.