Riser joint system, well drilling system and method for well drilling system

Abstract

A riser joint system, comprising: a riser joint assembly defining a channel and comprising a first ultrasound module for transmitting a first ultrasound signal to obtain first ultrasound data and a second ultrasound module for transmitting a second ultrasound signal to obtain second ultrasound data, wherein a beam direction of the first ultrasound signal is perpendicular to an axial line of the channel and a beam direction of the second ultrasound signal is oblique to the axial line of the channel; and a processing module for receiving the first ultrasound data and the second ultrasound data and obtaining first information and second information. A well drilling system and a method for the well drilling system are also described.

What is claimed is: 
     
         1 . A riser joint system, comprising:
 a riser joint assembly defining a channel and comprising a first ultrasound module for transmitting a first ultrasound signal to obtain first ultrasound data and a second ultrasound module for transmitting a second ultrasound signal to obtain second ultrasound data, wherein a beam direction of the first ultrasound signal is perpendicular to an axial line of the channel and a beam direction of the second ultrasound signal is oblique to the axial line of the channel; and   a processing module for receiving the first ultrasound data and the second ultrasound data and obtaining first information and second information.   
     
     
         2 . The riser joint system of  claim 1 , wherein the first information relates to a drill pipe passing through the channel 
     
     
         3 . The riser joint system of  claim 2 , wherein the processing module generates a warning for an unshearable portion of the drill pipe based on the first information. 
     
     
         4 . The riser joint system of  claim 1 , wherein the second information relates to a fluid passing through an annular space formed by the riser joint assembly and a drill pipe passing through the channel 
     
     
         5 . The riser joint system of  claim 1 , wherein the first ultrasound module comprises a plurality of transducers circled around the riser joint assembly, and the second ultrasound module comprises multiple sets of transducers, each set of transducers circled around the riser joint assembly. 
     
     
         6 . The riser joint system of  claim 1 , wherein the processing module obtains the second information based on the first ultrasound data and the second ultrasound data. 
     
     
         7 . The riser joint system of  claim 6 , wherein the processing module obtains the first information based on the first ultrasound data, and obtains the second information based on the second ultrasound data and the first information. 
     
     
         8 . The riser joint system of  claim 1 , wherein the processing module obtains the first information based on the first ultrasound data and the second ultrasound data. 
     
     
         9 . The riser joint system of  claim 8 , wherein the processing module obtains the second information based on the second ultrasound data, and obtains the first information based on the first ultrasound data and the second information. 
     
     
         10 . The riser joint system of  claim 1 , wherein the riser joint assembly and the processing module are configured to be located below a sea surface. 
     
     
         11 . The riser joint system of  claim 1 , wherein the processing module is integrated with the riser joint assembly. 
     
     
         12 . A well drilling system, comprising:
 a riser;   a drill pipe for guiding a drilling fluid to a well;   a riser joint assembly connected to the riser , the riser joint assembly and the riser defining a channel for accommodating the drill pipe and passing a fluid returning from the well through an annular space formed by the riser joint assembly and the drill pipe, the riser joint assembly comprising a first ultrasound module for transmitting a first ultrasound signal to obtain first ultrasound data and a second ultrasound module for transmitting a second ultrasound signal to obtain second ultrasound data, wherein a beam direction of the first ultrasound signal is perpendicular to an axial line of the channel and a beam direction of the second ultrasound signal is oblique to the axial line of the channel; and   an processing module for receiving the first ultrasound data and the second ultrasound data and obtaining first information relating to the drill pipe and second information relating to the fluid returning from the well.   
     
     
         13 . The system of  claim 12 , wherein the well drilling system comprises a blow out preventer, and the riser joint assembly is connected with the blow out preventer, or is located close to the blow out preventer. 
     
     
         14 . The system of  claim 12 , further comprising a displaying module located above the sea surface for displaying the first information and the second information. 
     
     
         15 . A method for a well drilling system, comprising:
 passing a fluid through an annular space formed by a drill pipe and a riser joint assembly of the well drilling system;   transmitting a first ultrasound signal to obtain first ultrasound data;   transmitting a second ultrasound signal to obtain second ultrasound data, wherein a beam direction of the first ultrasound signal is perpendicular to an axial line of the riser joint assembly and a beam direction of the second ultrasound signal is oblique to the axial line of the riser joint assembly; and   obtaining first information relating to the drill pipe and second information relating to the fluid based on the first ultrasound data and the second ultrasound data.