Wireline Thermal Standoff

Abstract

The present invention relates to a wireline thermal standoff (WTSO) for deployment during a logging operation to record maximum borehole temperature of a subsurface wellbore. In an embodiment the WSTO may comprise a pair of cable insert halves, a pair of opposing WTSO body halves, a plurality of thermal half shells each comprising a thermal strip capable of measuring thermal conditions, and one or more fasteners, wherein the one or more fasteners are configured to couple the pair of cable insert halves, the pair of opposing WTSO body halves, and the plurality of thermal half shells together onto a cable.

What is claimed is: 
     
         1 . A wireline thermal standoff (WSTO) comprising:
 a pair of cable insert halves;   a pair of opposing WTSO body halves;   a plurality of thermal half shells each comprising a thermal strip capable of measuring thermal conditions; and   one or more fasteners, wherein the one or more fasteners are configured to couple the pair of cable insert halves, the pair of opposing WTSO body halves, and the plurality of thermal half shells together onto a cable.   
     
     
         2 . The WTSO of  claim 1 , wherein the pair of cable insert halves are concentrically disposed between the cable and the pair of opposing WTSO body halves, wherein the pair of cable insert halves are in direct contact with the cable and at least partially encased within the pair of opposing WTSO body halves. 
     
     
         3 . The WTSO of  claim 1 , wherein the plurality of thermal half shells are concentrically disposed between the pair of cable insert halves and the pair of opposing WTSO body halves, wherein the plurality of thermal half shells are in direct contact with the cable insert halves and encased within the pair of opposing WTSO body halves. 
     
     
         4 . The WTSO of  claim 1 , wherein the cable insert halves each comprise flanged ends, a central flange, and an anti-rotation spigot recess, to prevent axial and radial movement of the cable insert halves within the pair of opposing WTSO body halves and the plurality of thermal half shells, wherein the anti-rotation spigot recess receives an anti-rotation spigot disposed on the pair of opposing WTSO body halves. 
     
     
         5 . The WTSO of  claim 1 , wherein the plurality of thermal half shells comprise spiral pins to prevent radial movement of the plurality of thermal half shells. 
     
     
         6 . The WTSO of  claim 1 , wherein the one or more fasteners comprise cable insert fasteners configured to secure the pair of cable insert halves to the pair of opposing WTSO body halves, wherein the cable insert fasteners travel through insert fastener clearance holes disposed on the pair of opposing WTSO body halves and are received by cable insert fastener threads disposed on the pair of cable insert halves. 
     
     
         7 . The WTSO of  claim 6 , wherein the pair of cable insert halves secured in the pair of WTSO body halves further secures the plurality of thermal half shells. 
     
     
         8 . The WTSO of  claim 1 , wherein the pair of cable insert halves are manufactured from a material comprising aluminum. 
     
     
         9 . The WTSO of  claim 1 , wherein the plurality of thermal half shells are manufactured from a material comprising stainless steel. 
     
     
         10 . The WTSO of  claim 1 , wherein the pair of opposing WTSO body halves comprise dowel pin recesses configured to receive dowel pins, wherein the dowel pin recesses and dowel pins contribute to the coupling of the opposing WTSO body halves onto the cable. 
     
     
         11 . The WTSO of  claim 1 , wherein the one or more fasteners comprise clamping bolts configured to secure the pair of cable insert halves, the plurality of thermal half shells, and the pair of opposing WTSO body halves to the cable, wherein the clamping bolts travel through clamping bolt clearance holes disposed on one half of the pair of opposing WTSO body halves and are received by clamping bolt female threads disposed on the other half of the pair of opposing WTSO body halves. 
     
     
         12 . The WTSO of  claim 1 , wherein the pair of opposing WTSO body halves comprise thermal windows to provide external exposure to the thermal strips when measuring the thermal conditions. 
     
     
         13 . The WTSO of  claim 12 , wherein the pair of opposing WTSO body halves comprise thermal undercuts connecting the thermal windows to provide pressure equalization when measuring the thermal conditions. 
     
     
         14 . The WTSO of  claim 1 , wherein the pair of opposing WTSO body halves are manufactured from a material comprising stainless steel. 
     
     
         15 . The WTSO of  claim 1 , wherein the thermal strips are fixed to the plurality of thermal half shells by an adhesive. 
     
     
         16 . A cable assembly comprising:
 a cable; and   a wireline thermal standoff (WTSO), wherein the WTSO comprises:
 a pair of cable insert halves; 
 a pair of opposing WTSO body halves; 
 a plurality of thermal half shells each comprising a thermal strip capable of measuring thermal conditions; and 
 one or more fasteners, wherein the one or more fasteners are configured to couple the pair of cable insert halves, the pair of opposing WTSO body halves, and the plurality of thermal half shells together onto the cable. 
   
     
     
         17 . A method for measuring and recoding thermal conditions in a wellbore during wireline or slickline operations comprising:
 (A) coupling one or more wireline thermal standoffs (WTSOs) to a cable connected to a wellbore logging tool, wherein the one or more WTSOs comprise:
 a pair of cable insert halves; 
 a pair of opposing WTSO body halves; 
 a plurality of thermal half shells each comprising a thermal strip capable of measuring thermal conditions; and 
 one or more fasteners, wherein the one or more fasteners are configured to couple the pair of cable insert halves, the pair of opposing WTSO body halves, and the plurality of thermal half shells together onto the cable; 
   (B) deploying the wellbore logging tool into a wellbore;   (C) allowing the thermal strips to measure thermal conditions in the wellbore; and   (D) monitoring the thermal conditions measured by the thermal strips in the wellbore.   
     
     
         18 . The method of  claim 17 , wherein monitoring thermal conditions comprises retrieving the WTSOs from the wellbore. 
     
     
         19 . The method of  claim 17 , wherein the thermal conditions comprise maximum wellbore temperature. 
     
     
         20 . The method of  claim 19 , wherein the maximum wellbore temperature is determined by averaging the thermal conditions measured by each thermal strip.