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US 12,305,513 B2Granted
Rigless drilling and wellhead installation
AssigneeVetco Gray Scandinavia AS
InventorsJarle Hvidsten, Knut Inge Dahlberg, Anders Berggren, Vidar Strand
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Abstract
The present invention relates to methods and systems for establishing a well foundation as well as for drilling and installation of a surface casing without any use of a drilling rig.
Claims18
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.
7 more elements
A system for installation of a surface casing using a vessel, the system comprising:
- a surface 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, wherein the surface casing assembly is configured to be dispatched from the vessel and then lowered down on a wire of a crane on the vessel and is further configured to be stabbed into a subsea node with a low pressure housing and to be run into a borehole on the wire;
- and
- a hose from the vessel connected to the HPH side entry sub of the surface casing assembly;
- wherein the HPH of the surface casing assembly is configured to be locked into the low pressure housing;
- wherein the cement stinger is configured to cement the surface casing in place in the borehole by means of a pump configured to pump cement from the vessel, through the hose, into the HPH side entry sub and through the HPH running tool;
- and
- wherein the HPH running tool is configured to be released and pulled out of the borehole together with the lifting sub, the HPH side entry sub and the cement stinger by using the wire of the crane on the vessel.
4 more elements
A system for installation of one or more wellbore components using a vessel, the system comprising:
- a high pressure housing (HPH);
- a surface casing coupled to the HPH;
- an HPH running tool coupled to the HPH;
- a cement stinger coupled to the HPH running tool and extending through at least part of the surface casing;
- an HPH side entry sub coupled to the HPH running tool;
- and
- an HPH lifting sub coupled to the HPH side entry sub;
- a hose from the vessel connected to the HPH side entry sub;
- and
- a pump coupled to the hose;
- wherein the HPH is configured to be locked into a low pressure housing coupled to a borehole, the cement stinger is configured to receive cement supplied by the pump, and the HPH running tool is configured to be released and pulled out of the borehole together with the lifting sub, the HPH side entry sub, and the cement stinger.
8 more elements
Dependencies are inferred from the claim text.