RTTS Safety Joint

The RTTS safety joint is an optional emergency backoff tool of drill stem testing string. The RTTS Safety Joint should be run on all special tool and DST jobs directly above the packer.

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Description

RTTS Safety Joint introduction
The RTTS safety joint is an optional emergency backoff tool of drill stem testing string. The RTTS Safety Joint should be run on all special tool and DST jobs directly above the packer.

The purpose of the safety joint is to provide a disconnect point in the tool string above the packer for removal of all equipment above that point if the work string becomes stuck and the Safety Joint can still be operated. When the DST tools string is stuck, the dst tools above the RTTS safety joint can be retrieved.

RTTS Safety Joint Specification

No.	Specification	8 5/8-13 3/8” RTTS Safety Joint
1	OD	155.5mm
2	ID	79mm
3	Length	1195.5mm(1205.5MM)
4	Working Pressure	70MPa
5	Internal Pressure strength	125.6MPa
6	External Pressure strength	102.5MPa
7	Tension Strength	2000KN
8	Torque strength	40KN.m
9	Service	H2S,As per NACE MR-0175(>175°F)
10	Tension sleeve Rating	176+-10 kN
11	Working Temperature	-29℃～+204℃
12	Top and bottom Connection	3 1/2IF. BXP 4 1/2"IF. BXP

Technical parameter of 5 1/2" RTTS Safety Joint

No.	Specification	7”- 7 5/8" RTTS Safety Joint
1	OD	127.5mm
2	ID	57mm
3	Length	1290mm
4	Working Pressure	70MPa
5	Internal Pressure strength	132MPa
6	External Pressure strength	123MPa
7	Tension Strength	1412KN
8	Torque strength	22KN.m
9	Service	H2S,As per NACE MR-0175(>175°F)
10	Tension sleeve Rating	116+-10 kN
11	Working Temperature	-29℃～+204℃
12	Top and bottom Connection	3 1/2IF. BXP