Deploying material to limit losses of drilling fluid in a wellbore
Bottom hole assemblies for deploying sheets of material in a wellbore include: a body configured for attachment to a drill pipe; a spool ring attached to the body; a spring ring; and rolls of fabric.
1. A bottom hole assembly for deploying sheets of material in a wellbore, the bottom hole assembly comprising:
a body configured for attachment to a drill pipe, the body having an outer surface;
a spool ring attached to the body, the spool ring comprising a plurality of spools;
a spring ring comprising a spring disposed around the body, the spring having an inner surface, the spring having a compressed position in which the inner surface of the spring abuts the outer surface of the body and a relaxed position in which the inner surface of the spring is spaced from the outer surface of the body; and
rolls of fabric, each roll mounted on one of the plurality of spools and each roll has a first end attached to the spring ring and a second end releasably connected to the one of the plurality of spools.
2. The bottom hole assembly of claim 1 , wherein the rolls of fabric are a lost circulation fabric.
3. The bottom hole assembly of claim 1 , wherein the rolls of fabric are wound around onto one of the plurality of spools.
4. The bottom hole assembly of claim 1 , wherein the spring is a spiral spring.
5. The bottom hole assembly of claim 4 , wherein the spring ring further comprises a locking tube disposed in a cavity defined in a wall of the body and a locking pin extending through the spiral spring and a portion of the body to engage the locking tube.
6. The bottom hole assembly of claim 5 , wherein the locking tube has a first position engaging the locking pin and a second position releasing the locking pin.
7. The bottom hole assembly of claim 1 , wherein the plurality of spools includes a first set of spools and a second set of spools offset from the first set of spools towards a downhole end of the body.
8. The bottom hole assembly of claim 7 , wherein the second set of spools is positioned with an angular offset from the first set spools such that rolls of the fabric mounted on the first set of spools overlap rolls of the fabric mounted on the second set of spools.
9. A bottom hole assembly for deploying sheets of material in a wellbore, the bottom hole assembly comprising:
a body configured for attachment to a drill pipe, the body having an outer surface with a first diameter;
a spool ring attached to the body, the spool ring having a plurality of spools;
a spring ring disposed around the body, the spring ring having a compressed position with a second diameter that is greater than and a relaxed position with a second diameter that is greater than the first diameter, wherein in the compressed position the spring ring abuts the body, wherein in the relaxed position the spring ring is spaced from the body; and
rolls of fabric, each roll mounted on one of the plurality of spools and each roll has a first end attached to the spring ring and a second end releasably connected to the one of the plurality of spools.
10. The bottom hole assembly of claim 9 , wherein the rolls of fabric are a lost circulation fabric.
11. The bottom hole assembly of claim 9 , wherein rolls of fabric are is wound around onto one of the plurality of spools.
12. The bottom hole assembly of claim 9 , wherein the spring is a spiral spring.
13. The bottom hole assembly of claim 12 , wherein the spring ring further comprises a locking tube disposed in a cavity defined in a wall of the body and a locking pin extending through the spiral spring and a portion of the body to engage the locking tube.
14. The bottom hole assembly of claim 13 , wherein the locking tube has a first position engaging the locking pin and a second position releasing the locking pin.
15. The bottom hole assembly of claim 9 , wherein the plurality of spools includes a first set of spools and a second set of spools offset from the first set of spools towards a downhole end of the body.
16. The bottom hole assembly of claim 15 , wherein the second set of spools is positioned with an angular offset from the first set spools such that rolls of the fabric mounted on the first set of spools overlap rolls of the fabric mounted on the second set of spools.