US 12,000,261 B2
System and methodology for determining appropriate rate of penetration in downhole applications
Zhanke Liu, Sugar Land, TX (US); Richard Morrison, Sugar Land, TX (US); Luis Silva, Houston, TX (US); Sascha Trummer, Richmond, TX (US); Jordi Segura Dominguez, Richmond, TX (US); and Charles Kearney, Richmond, TX (US)
Assigned to SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US)
Appl. No. 17/595,465
Filed by Schlumberger Technology Corporation, Sugar Land, TX (US)
PCT Filed May 20, 2020, PCT No. PCT/US2020/033709
§ 371(c)(1), (2) Date Nov. 17, 2021,
PCT Pub. No. WO2020/236876, PCT Pub. Date Nov. 26, 2020.
Claims priority of provisional application 62/850,051, filed on May 20, 2019.
Claims priority of provisional application 62/850,084, filed on May 20, 2019.
Prior Publication US 2022/0213778 A1, Jul. 7, 2022
Int. Cl. E21B 44/02 (2006.01); E21B 19/22 (2006.01); E21B 29/00 (2006.01); E21B 45/00 (2006.01); E21B 47/12 (2012.01); E21B 7/00 (2006.01); E21B 44/00 (2006.01)
CPC E21B 44/02 (2013.01) [E21B 19/22 (2013.01); E21B 29/00 (2013.01); E21B 45/00 (2013.01); E21B 47/12 (2013.01); E21B 7/00 (2013.01); E21B 44/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method, comprising:
moving a downhole well tool along a wellbore of a well system via coiled tubing;
determining a desired rate of penetration (ROP) of the downhole well tool;
determining a coefficient of friction (COF) acting on the coiled tubing;
monitoring a surface load cell measurement acting on the coiled tubing;
updating the COF acting on the coiled tubing when the downhole well tool is moved through different formation zones along the wellbore based at least in part on the surface load cell measurement acting on the coiled tubing; and
controlling an injector head of the well system to automatically adjust a hanging weight of the coiled tubing based at least in part on the updated COF acting on the coiled tubing to maintain the desired ROP.