US 12,312,949 B2
Drilling control
Richard Meehan, Houston, TX (US); and James Belaskie, Houston, TX (US)
Assigned to SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US)
Filed by Schlumberger Technology Corporation, Sugar Land, TX (US)
Filed on Jan. 3, 2024, as Appl. No. 18/402,981.
Application 18/402,981 is a continuation of application No. 17/758,034, granted, now 11,891,890, previously published as PCT/US2020/065789, filed on Dec. 18, 2020.
Claims priority of provisional application 62/954,349, filed on Dec. 27, 2019.
Prior Publication US 2024/0133291 A1, Apr. 25, 2024
Int. Cl. E21B 44/00 (2006.01); E21B 47/04 (2012.01); E21B 47/12 (2012.01)
CPC E21B 47/12 (2013.01) [E21B 44/00 (2013.01); E21B 47/04 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A method of conducting a drilling operation, comprising:
receiving an initial on-bottom signal that is indicative of an on-bottom state;
receiving data indicative of a block position of a block for an in-slips state and a block position for going to an out-of-slips state of a rig, wherein the data indicative of the block position comprises a reference block position value, an off-bottom block position value, and an in-slips added length of pipe block position value;
receiving data indicative of slips status of slips of the rig that is indicative of in-slips or out-of-slips, wherein a difference between the block position of the block for in-slips states and the block position for going out-of-slips are utilized to determine a length of pipe added to a drillstring;
utilizing the data indicative of the slips status and the data indicative of the block position to control the drilling operation; and
at least one of:
landing a drill bit on a bottom of a borehole by moving the drillstring a distance that corresponds to a block position determined at least in part by subtracting the off-bottom block position value from the in-slips added length of pipe block position value;
receiving or determining a rate of penetration and controlling a position of the drillstring with respect to time based at least in part on the rate of penetration; or
controlling the slips of the rig, wherein the controlling the slips of the rig comprises a first transitioning from the out-of-slips state to the in-slips state and a second transitioning from the in-slips state to the out-of-slips state.