Self orienting lateral junction system
View Patent ↗A self orienting liner hanger system including a bent sub, an indexing sub in operable communication with the bent sub, a hanger assembly in operable communication with the indexing sub, and a profile connected with the hanger assembly. Yet further disclosed herein is a method for constructing a junction between a primary borehole and a lateral borehole. The method includes installing a window sleeve at the junction, running a liner hanger into the sleeve, cycling an indexing sub of the hanger until a bent sub of the hanger exits the window, and running the hanger into engagement with the sleeve.
1. A self orienting liner hanger system comprising:
a bent sub;
an indexing sub in operable communication with the bent sub, the indexing sub itself causing rotational movement of the bent sub a number of degrees upon cycling of weight thereon;
a hanger assembly in operable communication with the indexing sub; and
a profile connected with said hanger assembly.
2. A self orienting liner hanger system as claimed in claim 1 wherein said system further includes a premachined window sleeve having a profile at an uphole end thereof complementary to said profile connected with said hanger assembly.
3. A self orienting liner hanger system as claimed in claim 1 wherein said indexing sub rotates said bent sub upon a weight removal portion of the cycling of weight.
4. A self orienting liner hanger system as claimed in claim 1 wherein said hanger assembly includes a hook landable in a window vee.
5. A self orienting junction system for completing a junction between a primary borehole and a lateral borehole comprising:
a window sleeve installable in the primary borehole; and
a liner hanger installable through the window sleeve and having a bent joint and an indexing sub, the indexing sub causing rotation of the bent sub a number of degrees upon cycling of weight on the indexing sub.
6. A junction comprising:
a primary borehole;
a lateral borehole extending from the primary borehole;
a window sleeve installed in the primary borehole and having a profile on an uphole end; and
a liner hanger including
a bent sub;
an indexing sub in operable communication with the bent sub, the indexing sub itself causing rotational movement of the bent sub a number of degrees upon cycling of weight thereon;
a hanger assembly in operable communication with the indexing sub: and
a profile connected with said hanger assembly extending through the window sleeve.
7. A method for constructing a junction between a primary borehole and a lateral borehole comprising:
installing a window sleeve at the junction;
running a liner hanger into said sleeve;
cycling weight on an indexing sub of said hanger causing the indexing sub itself to rotate a bent sub a number of degrees from each cycle until the bent sub of said hanger exits said window; and
running said hanger into engagement with said sleeve.
8. A method for constructing a junction between a primary borehole and a lateral borehole as claimed in claim 7 wherein said method further includes accessing the primary borehole downhole of the sleeve.
9. A method for constructing a junction between a primary borehole and a lateral borehole as claimed in claim 7 wherein said running said liner hanger is on coil tubing.
10. A method for constructing a junction between a primary borehole and a lateral borehole as claimed in claim 7 wherein said cycling causes rotating of said bent upon a weight removal portion of the cycling of weight.