Invention Grant
- Patent Title: Rotational continuous circulation tool
-
Application No.: US16885444Application Date: 2020-05-28
-
Publication No.: US11242717B2Publication Date: 2022-02-08
- Inventor: Mohammad Saud Al-Badran , Chinthaka Pasan Gooneratne
- Applicant: Saudi Arabian Oil Company
- Applicant Address: SA Dhahran
- Assignee: Saudi Arabian Oil Company
- Current Assignee: Saudi Arabian Oil Company
- Current Assignee Address: SA Dhahran
- Agency: Bracewell LLP
- Agent Constance G. Rhebergen; Vivek P. Shankam
- Main IPC: E21B19/16
- IPC: E21B19/16 ; E21B21/10 ; E21B34/00 ; E21B21/01 ; E21B3/02

Abstract:
A tool circulates drilling fluid through and rotates a pipe string while making up or breaking out a stand of pipe. The tool includes a clad configured to grip and seal around the RCCT sub. The clad includes a body portion, an inner ring configured to selectively rotate independently, an outer ring configured to be stationary with respect to the inner ring, the outer ring having at least two annular protrusions, a first arm configured to engage with a first annular protrusion, a second arm configured to engage with a second annular protrusion, and a stinger configured to latch into the at least one side entry port and allow the sub and the drill pipe string to rotate independent of the clad. The clad is configured to avoid or prevent stuck pipe incidents.
Public/Granted literature
- US20210372208A1 Rotational Continuous Circulation Tool Public/Granted day:2021-12-02
Information query