Well abandonment system

Abstract

A well abandonment system includes a jet cutter assembly. The jet cutter assembly includes a first sub including a first bulkhead and a jet cutter tool. The jet cutter tool includes a radial shaped charge and a detonator to detonate the radial shaped charge. A first end of the jet cutter tool is connected to the first sub and a second end of the jet cutter tool is connected to the second sub. The jet cutter assembly may include bulkheads that facilitate electrical communication along a length of the jet cutter assembly. A shock absorber is connected to the jet cutter tool in order to mitigate or prevent shock from impacting the jet cutter upon activation of a perforating gun or components of a tool string that is connected to the jet cutter. The shock absorber may include at least one of a sleeve, biasing member, or wireline.

What is claimed is: 
     
         1 . A well abandonment system comprising:
 a first wireline;   a cutting tool operably coupled to the first wireline;   a perforating gun operably connected to the cutting tool on a downhole side of the cutting tool; and   a plug tool operably connected to the perforating gun on a downhole side of the perforating gun, wherein   the perforating gun is operably connected to the wireline through the cutting tool, and   the plug tool is operably connected to the wireline through the perforating gun and the cutting tool.   
     
     
         2 . The well abandonment system of  claim 1 , further comprising a shock absorber provided between the cutting tool and the perforating gun. 
     
     
         3 . The well abandonment system of  claim 2 , wherein the shock absorber comprises a spring provided between the cutting tool and a cross-over sub provided on a downhole side of the cutting tool. 
     
     
         4 . The well abandonment system of  claim 2 , wherein the cutting tool is provided in a sleeve, and a gap is provided between the cutting tool and an inner surface of the sleeve in a radial direction. 
     
     
         5 . The well abandonment system of  claim 1 , further comprising a second wireline operably connected between the cutting tool and the perforating gun. 
     
     
         6 . The well abandonment system of  claim 1 , wherein the cutting tool further comprises a wireless detonator, the wireless detonator comprises an electrically conductive detonator shell accessible from the downhole side of the cutting tool. 
     
     
         7 . The well abandonment system of  claim 1 , wherein the perforating gun further comprises: a through wire configured to provide an electrical connection between an uphole side of the perforating gun and the downhole side of the perforating gun. 
     
     
         8 . A method of abandoning a wellbore having a tubular wellbore casing, the method comprising:
 providing a well abandonment system comprising:   a first wireline;   a cutting tool operably coupled to the first wireline;   a perforating gun operably connected to the cutting tool on a downhole side of the cutting tool; and   a plug tool operably connected to the perforating gun on a downhole side of the perforating gun, wherein the perforating gun is operably connected to the wireline through the cutting tool, and the plug tool is operably connected to the wireline through the perforating gun and the cutting tool;   lowering the well abandonment system into the wellbore;   activating the plug tool to set a plug in place;   activating the perforating gun to create circulation holes;   circulating the well clean via the circulation holes; and   activating the cutter tool to cut the tubular wellbore casing.   
     
     
         9 . The method of  claim 8 , wherein the well abandonment system further comprises a shock absorber provided between the cutting tool and the perforating gun, the shock absorber comprising at least one of a spring, and a second wireline. 
     
     
         10 . The method of  claim 8 , wherein the well abandonment system further comprises: a second wireline operably connected between the cutting tool and the perforating gun. 
     
     
         11 . The method of  claim 8 , wherein the cutting tool further comprises a wireless detonator, and wherein the wireless detonator comprises an electrically conductive shell accessible from the downhole side of the cutting tool. 
     
     
         12 . The method of  claim 8 , wherein the perforating gun further comprises a through wire providing an electrical connection between an uphole side of the perforating gun and the downhole side of the perforating gun. 
     
     
         13 . The method of  claim 8 , further comprising repositioning the well abandonment system after activation of the plug. 
     
     
         14 . The method of  claim 8 , further comprising repositioning the well abandonment system after activation of the perforating gun. 
     
     
         15 . The method of  claim 8 , further comprising retrieving the first wireline after activation of the cutting tool. 
     
     
         16 . A jet cutter assembly for a well abandonment system, comprising:
 a first sub comprising a first bulkhead providing electrical connectivity through the first sub;   a jet cutter tool provided downstream of the first sub, the jet cutter tool comprising:   a radial shaped charge;   a detonator configured to detonate the radial shaped charge, the detonator being in electrical communication with the first bulkhead; and   a second bulkhead in electrical communication with the detonator;   a second sub provided downstream of the jet cutter tool, the second sub comprising a third bulkhead providing electrical connectivity through the second sub, the third bulkhead being in electrical communication with the second bulkhead;   a spring provided between the jet cutter tool and the second sub; and   a sleeve surrounding the jet cutter tool in a radial direction.   
     
     
         17 . The jet cutter assembly of  claim 16 , wherein the sleeve is a shock-absorbing sleeve formed of a metal or metal composite. 
     
     
         18 . The jet cutter assembly of  claim 16 , wherein the detonator comprises:
 a detonator head formed of a non-conductive material;   a shell formed of a conductive material and extending from the detonator head;   a signal-in connector provided on the detonator head; and   an explosive provided within the shell,   wherein the explosive is positioned to detonate the radial shaped charge when the explosive is initiated by the detonator, and the shell is in electrical communication with the signal-in connector.   
     
     
         19 . The jet cutter assembly of  claim 16 , wherein the first sub is configured to be operably connected to a wireline. 
     
     
         20 . The jet cutter assembly of  claim 16 , wherein the second sub is configured to be operably connected to a perforating gun.