Fluid multisample capturing with translating member

Abstract

A downhole tool to be positioned in a wellbore in a subsurface formation. The downhole tool comprises a first rod configured with a first cavity to obtain samples of formation fluid. The downhole tool comprises a translating member configured to shift the first rod from an open position to a closed position to obtain, via the first cavity, a first fluid sample of the formation fluid from a first location in the wellbore.

1 . A downhole tool to be positioned in a wellbore in a subsurface formation, the downhole tool comprising;
 a first rod configured with a first cavity to obtain samples of formation fluid;   a translating member configured to shift the first rod from an open position to a closed position to obtain, via the first cavity, a first fluid sample of the formation fluid from a first location in the wellbore.   
     
     
         2 . The downhole tool of  claim 1  further comprising:
 a second rod, wherein the second rod is configured with a second cavity to obtain samples of the formation fluid, and wherein the translating member is configured to shift the second rod from an open position to a closed position to obtain, via the second cavity, a second fluid sample of the formation fluid from. 
 
     
     
         3 . The downhole tool of  claim 2 , wherein the second fluid sample of the formation fluid is from the first location or a second location in the wellbore. 
     
     
         4 . The downhole tool of  claim 2 , wherein the translating member is configured to sequentially contact the first rod and the second rod to subsequently shift the first rod and the second rod from the respective open position to the respective closed position. 
     
     
         5 . The downhole tool of  claim 2  further comprising:
 a fluid passage within a tool body comprising the formation fluid to be sampled by the first rod and the second rod. 
 
     
     
         6 . The downhole tool of  claim 5 , wherein the second rod is configured to obtain the second fluid sample from the fluid passage when the first rod is in the closed position. 
     
     
         7 . The downhole tool of  claim 5  further comprising:
 one or more seals configured to prevent hydraulic communication between the fluid passage and an interior of the tool body when the first rod is in the open position, and wherein the one or more seals are configured to prevent hydraulic communication between the fluid passage and an exterior of the tool body when the first rod is in the open position. 
 
     
     
         8 . The downhole tool of  claim 7 , wherein the one or more seals are configured to isolate the first fluid sample in the first cavity when the first rod is in the closed position. 
     
     
         9 . The downhole tool of  claim 1  further comprising:
 a motor configured to translate the translating member upon a threaded rod, to contact the first rod to shift the first rod from the open position to the closed position. 
 
     
     
         10 . The downhole tool of  claim 9 , wherein the translating member is prohibited from rotating about a central axis of the threaded rod. 
     
     
         11 . The downhole tool of  claim 1 , wherein the first rod is positioned in a removable cartridge. 
     
     
         12 . A method comprising:
 positioning a downhole tool at a first location in a wellbore;   obtaining formation fluid in a fluid passage of the downhole tool; and   shifting, via a translating member, a first rod from an open position to a closed position to obtain a first fluid sample of the formation fluid from the first location.   
     
     
         13 . The method of  claim 12 , wherein a first cavity of the first rod hydraulically communicates with the fluid passage when the first rod is in the open position, and wherein the first fluid sample is sealed within the first cavity when the translating member shifts the first rod to the closed position. 
     
     
         14 . The method of  claim 12  further comprising:
 positioning the downhole tool at a second location; 
 obtaining the formation fluid in the fluid passage of the downhole tool, wherein a second cavity of a second rod hydraulically communicates with the fluid passage when the second rod is in an open position; and 
 shifting, via the translating member, the second rod to a closed position to obtain a second fluid sample of the formation fluid from the second location, via the second cavity. 
 
     
     
         15 . The method of  claim 12  further comprising:
 shifting, via the translating member, a second rod from an open position to a closed position to obtain a second fluid sample of the formation fluid from the first location, via a second cavity. 
 
     
     
         16 . The method of  claim 15 , wherein a motor is configured to translate the translating member, upon a threaded rod, to sequentially contact the first rod and the second rod to subsequently shift the first rod and the second rod to the respective closed position. 
     
     
         17 . An apparatus to be positioned in a wellbore in a subsurface formation, the apparatus comprising:
 a tool body comprising a fluid passage, the fluid passage configured to hold formation fluid from the subsurface formation;   a first rod positioned in the tool body and configured with a first cavity;   a translating member configured to shift the first rod from an open position to a closed position to obtain, via the first cavity, a first fluid sample of the formation fluid from a first location in the wellbore.   
     
     
         18 . The apparatus of  claim 17  further comprising:
 wherein a motor is configured to translate the translating member upon a threaded rod to sequentially contact the first rod and a second rod to subsequently shift the first rod and the second rod to the respective closed positions. 
 
     
     
         19 . The apparatus of  claim 18 , wherein the second rod is configured to obtain a second fluid sample from the fluid passage when the first rod is in the closed position.
 The apparatus of  claim 17 , wherein the translating member includes a contact surface configured to shift the first rod from the open position to the closed position.