US 12,305,513 B2
Rigless drilling and wellhead installation
Jarle Hvidsten, Laksevåg (NO); Knut Inge Dahlberg, Blomsterdalen (NO); Anders Berggren, Blomsterdalen (NO); and Vidar Strand, Sandnes (NO)
Assigned to Vetco Gray Scandinavia AS, (NO)
Filed by Vetco Gray Scandinavia AS, Nailsea (GB)
Filed on Jan. 11, 2024, as Appl. No. 18/409,919.
Application 18/409,919 is a continuation of application No. 17/310,569, granted, now 11,905,831, previously published as PCT/EP2020/025077, filed on Feb. 18, 2020.
Claims priority of application No. 20190220 (NO), filed on Feb. 18, 2019.
Prior Publication US 2024/0141731 A1, May 2, 2024
Int. Cl. E21B 7/124 (2006.01); B63B 35/44 (2006.01); E21B 7/128 (2006.01); E21B 7/20 (2006.01); E21B 15/02 (2006.01); E21B 21/00 (2006.01); E21B 33/035 (2006.01); E21B 33/05 (2006.01)
CPC E21B 7/128 (2013.01) [B63B 35/4413 (2013.01); E21B 7/124 (2013.01); E21B 7/20 (2013.01); E21B 15/02 (2013.01); E21B 21/001 (2013.01); E21B 33/035 (2013.01); E21B 33/05 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for installation of a surface casing using a vessel, the method comprising:
preparing a well casing assembly comprising a high pressure housing (HPH), the surface casing, an HPH running tool, a cement stinger, an HPH side entry sub, and an HPH lifting sub into one unit onshore or on the vessel;
connecting a hose from the vessel to the side entry sub of the well casing assembly;
dispatching the well casing assembly from the vessel;
lowering the well casing assembly by means of a crane or winch on the vessel;
stabbing the well casing assembly into a low pressure housing and running the well casing assembly into a borehole supported by a wire;
latching and locking the HPH of the well casing assembly into the low pressure housing;
cementing the surface casing in place by pumping cement from the vessel, through the hose, into the side entry sub, through the HPH running tool and down and out of the cement stinger;
releasing the HPH running tool; and
pulling out of the borehole together with the lifting sub, the side entry sub and the cement stinger by using the crane or winch on the vessel.