Patent ID: 11859457
Assignee: SAUDI ARABIAN OIL COMPANY
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 11:
12. A well intervention method, comprising:
running a first whipstock into a wellbore formed from a terranean surface to one or more subterranean formations, the first whipstock comprising a first bore of a first diameter that extends from an uphole, angled face of the first whipstock to a downhole face of the first whipstock;
securing the first whipstock into a casing installed in the wellbore by securing one or more first keys formed on a radial exterior surface of the first whipstock into one or more first keyholes formed in the casing;
based on the securing, positioning the first whipstock adjacent a first lateral formed from a first lateral window in the casing;
running a second whipstock into the wellbore, the second whipstock comprising a second bore of a second diameter that extends from an uphole, angled face of the second whipstock to a downhole face of the second whipstock, where the first diameter is the same or substantially the same as the second diameter;
securing the second whipstock into the casing by securing one or more second keys formed on a radial exterior surface of the second whipstock into one or more second keyholes formed in the casing;
based on the securing, positioning the second whipstock adjacent a second lateral formed from a second lateral window in the casing; and
running an adjustable entry tool into the wellbore in a closed position;
positioning the adjustable entry tool in the first bore;
adjusting the adjustable entry tool from the closed position to an open position;
running an intervention tool through the first bore and into the second lateral through the second lateral window;
selectively passing the intervention tool run into the wellbore through one or both of the first or second bores; and
running the intervention tool into at least one of the first lateral, the second lateral, or another lateral downhole of the first and second laterals subsequent to selectively passing the intervention tool through the one or both of the first or second bores.