Modular coiled tubing bottom hole assembly

Abstract

A system and method to minimize trips in a wellbore during coiled tubing operations by simultaneously deploying on coiled tubing as part of the bottom hole assembly a wireline tool and an intervention tool. The wireline tool includes a flow through passage to permit a working fluid to flow through the wireline tool to the intervention tool during operations. The intervention tool may be adjusted in real time based on the measurements from the wireline tool.

1 . A bottom hole assembly for coiled tubing operations, the bottom hole assembly comprising:
 a coiled tubing connector head having a tubular body with a through bore and at least one cable connector;   an analytic tool secured to the connector head, the analytic tool having a through bore and an analytic tool cable connector mated with the cable connector of the connector head; and   an intervention tool secured to the analytic tool.   
     
     
         2 . The bottom hole assembly of  claim 1 , wherein the analytic tool is selected from the group consisting of setting tools, gamma perforating tools, casing collar locators, cement bond tools, cement bond tools, sonic and ultrasonic tools, resistivity tools, nuclear tools, natural gamma ray tools, flow meters. 
     
     
         3 . The bottom hole assembly of  claim 1 , wherein the intervention tool is selected from the group consisting of a drill bit, a milling bit, a cleaning tool, a stimulation tool, a fishing tool, a recovery tool, perforating tool, jetting tool, pipe cutters, settable plugs and packers, or downhole valves. 
     
     
         4 . The bottom hole assembly of  claim 1 , wherein said analytic tool comprises an upper engagement mechanism at a first end of the analytic tool and a lower engagement mechanism at a second end of the analytic tool, wherein the upper engagement mechanism attaches to the engagement mechanism of the coiled tubing connector head and the lower engagement mechanism attaches to an engagement mechanism of the intervention tool. 
     
     
         5 . The bottom hole assembly of  claim 1 , further comprising a circulating sub secured between the connector head and the analytic tool, the circulating sub comprising an elongated tubular having a first end and a second end with a through bore extending between the two ends, ports formed in the tubular and a valve mechanism to selectively alter fluid flow through the bore from the first end of the tubular to either the second end of the tubular or the ports, the circulating sub further having an upper circulating sub connector engaged with the cable connector and a lower circulating sub connector engaged with the analytic tool cable connector. 
     
     
         6 . The bottom hole assembly of  claim 1 , wherein the analytic tool has a first end and a second end and comprises a pass through bore extending along an axis between the two ends with a centralizer supporting a sensor mechanism along the analytic tool bore axis. 
     
     
         7 . The bottom hole assembly of  claim 6 , further comprising a first circulating sub secured between the coiled tubing connector head and the analytic tool and a second circulating sub secured between the analytic tool and the intervention tool, the circulating subs in a first configuration permitting flow through the first circulating sub from the connector head, past the pass through bore in which the sensor mechanism is supported and to the intervention tool and a second configuration in which a first flow path from the first circulating sub bypasses the sensor mechanism and a second flow path from the second circulating sub passes through the bore in which the sensor mechanism is supported. 
     
     
         8 . A coil tubing system for performing operations in a wellbore, the coiled tubing system comprising:
 coiled tubing forming an inner flow bore and having a distal end;   a hybrid cable deployed in the inner flow bore of the coiled tubing, the cable including at least one fiber optic and one electric conductor;   a connector head attached to the distal end of the coiled tubing, the connector head having at least one cable connector optically coupled to the fiber optic cable;   an analytic tool secured to the connector head, the analytic tool having an first analytic tool cable connector mated with the cable connector of the connector head; and   a first intervention tool secured to the analytic tool.   
     
     
         9 . The coil tubing system of  claim 10 , wherein the hybrid cable further comprises at least one electric cable and the connector head comprises an electric cable connector electrically coupled to the electric cable. 
     
     
         10 . The coil tubing system of  claim 11 , further comprising a first circulating sub secured between the connector head and the analytic tool, the circulating sub having an elongated tubular with a first end and a second end and a through bore extending between the two ends, ports formed in the tubular and an electric valve mechanism to selectively alter fluid flow through the bore from the first end of the tubular to either the second end of the tubular or the ports, the circulating sub further having an first circulating sub connector electrically connected to the electric valve mechanism, the first circulating sub connector mated with the cable connector of the connector head, and a second circulating sub connector electrically connected to the first circulating sub connector, the second circulating sub connector mated to the first analytic tool connector; and a treatment tool secured between the analytic tool and the first intervention tool, the treatment tool having an elongated tubular with a first end and a second end and a through bore extending between the two ends, ports formed in the tubular and an electric valve mechanism to selectively direct fluid flow from the through bore of the treatment tool to the ports of the treatment tool, the treatment tool further having a first treatment tool connector mated with the second analytic tool connector, the first treatment tool connector electrically connected to the electric valve mechanism of the treatment tool, wherein the through bores of the connector head, the circulating sub, the analytic tool, the treatment tool and the first intervention tool are in fluid communication with one another. 
     
     
         11 . A method of conducting stimulation of a wellbore, the method comprising deploying on coiled tubing into a wellbore a wireline tool and a intervention tool; setting a packer at a first location in the wellbore; pumping a working fluid down the coiled tubing, through the wireline tool to a first treatment zone; introducing the working fluid into the first treatment zone utilizing a jetting tool; releasing the packer at the first location in the wellbore; utilizing the coiled tubing to move the jetting tool to a second treatment zone; setting the packer at a second location in the wellbore; pumping a working fluid down the coiled tubing, through the wireline tool to the second treatment zone; introducing the working fluid into the second treatment zone utilizing the jetting tool. 
     
     
         12 . The method of  claim 13 , further comprising perforating the wellbore casing while the jetting tool is deployed, and thereafter, continuing with the step of setting the packer at a first location. 
     
     
         13 . The method of  claim 13 , further comprising utilizing a wireline tool to make a measurement in the wellbore after the chemical introduction, but before release of the packer, wherein the wireline tool is selected from the group consisting of gamma perforating tools, casing collar locators, cement bond tools, cement bond tools, sonic and ultrasonic tools, resistivity tools, nuclear tools, natural gamma ray tools, flow meters. 
     
     
         14 . The method of  claim 13 , further comprising utilizing a wireline tool to make a measurement in the wellbore during chemical introduction. 
     
     
         15 . The method of  claim 13 , further utilizing the wireline tool to monitor in real time the effects of the chemical treatment on a parameter of the wellbore. 
     
     
         16 . The method of  claim 13 , further comprising adjusting the chemical treatment in real time based on the real time monitoring of the wellbore. 
     
     
         17 . The method of  claim 13 , further comprising adjusting a stimulation treatment in real time based on feedback from sensors supported on the coiled tubing adjacent a stimulation zone. 
     
     
         18 . A method of conducting coiled tubing operations in a wellbore, the method comprising: deploying on coiled tubing into a wellbore a wireline tool and an intervention tool suspended below the wireline tool; pumping a first fluid along a first flow path through the wireline tool to the intervention tool; actuating a circulating valve to direct a second fluid along a second flow path around the wireline tool; and pumping a second fluid along the second flow path. 
     
     
         19 . The method of  claim 18 , further comprising utilizing the wireline tool to make measurements while the first fluid is pumped along the first flow path; and suspending the measurements while the second fluid is pumped along the second flow path. 
     
     
         20 . The method of  claim 19 , further comprising utilizing the intervention tool to perform a task selected from the group consisting of perforating wellbore casing, milling wellbore casing, drilling a wellbore and drilling a plug. 
     
     
         21 . The method of  claim 20 , further comprising utilizing the wireline tool and the intervention tool simultaneously. 
     
     
         22 . The method of  claim 21 , further comprising adjusting the mechanical intervention task in real time based upon monitoring by the wireline tool.