Methods and devices for orienting perforated guns
Methods and devices for orienting multiple gun barrels in desired directions and configurations have the locking threads of the gun barrels and the sub bodies placed in specified locations. Thus, when the sub body and the two gun barrels are joined to each other, the scallops of the two gun barrels will be aligned with each other.
1 . A method for orienting shots in adjacent gun barrels in the same direction, comprising:
receiving a sub body having a first thread and a second thread at opposite ends thereof, wherein a plan view angle defined by a starting end of the first thread, a starting end of the second thread, and a center of the sub body is either 0° or 180°;
attaching a first gun barrel to the sub body via the first thread; and
attaching a second gun barrel to the sub body via the second thread;
wherein the first gun barrel and the second gun barrel each include scallops located at only 0° along a length of the first gun barrel and a length of the second gun barrel.
2 . The method of claim 1 , wherein the first gun barrel includes a first thread and a second thread at opposite ends thereof, and wherein a starting end of the first thread and a starting end of the second thread are each located at 0° or at 180°.
3 . The method of claim 1 , wherein the sub body includes a shaft extending between the opposite ends thereof, and the sub body further comprises an electrically conductive rod fixed in place within the shaft, the ends of the rod exposed at the first end and the second end of the body for forming a pin-to-pin electrical connection.
4 . The method of claim 1 , wherein the sub body further comprises a central shoulder which provides a stop for both the first gun barrel and the second gun barrel.
5 . The method of claim 4 , wherein the sub body further comprises a third thread located between the central shoulder and the first thread.
6 . The method of claim 5 , further comprising a stand-off ring attached to the third thread.
7 . The method of claim 1 , wherein the sub body does not contain a third thread, or wherein the sub body does not include a lock ring.
8 . A perforating gun assembly, comprising a sub body, a first gun barrel, and a second gun barrel:
wherein the sub body comprises a first end with a first thread thereon and a second end with a second thread thereon, and wherein a plan view angle defined by a starting end of the first thread, a starting end of the second thread, and a center of the sub body is either 0° or 180°; and
wherein the first gun barrel and the second gun barrel each includes a first thread and a second thread at opposite ends thereof, and wherein a starting end of the first thread and a starting end of the second thread are each located at 0° or at 180°; and
wherein the first gun barrel and the second gun barrel each include scallops located at only 0° along a length of the first gun barrel and a length of the second gun barrel.