Electrically powered setting tool and perforating gun

Abstract

An electric setting tool powered through a cable or wire line for setting bridge plugs or other settable downhole tools and which may be used in conjunction with a select fire perforating gun. The electric setting toot is adapted to receive DC power and set a tool in the range of 20 to 60 seconds while operating at under 2.0 amps. The composite tool may be comprised of multiple perf guns subs, the electric setting tool, and bridge plug or other settable tool.

1 . A well servicing system, the system comprising:
 a downhole setting tool for a settable well implement, the setting tool comprising:   a direct current (DC) motor adapted to be powered down an insulated wireline to provide rotary motion; and   a transmission assembly driven by the DC motor and adapted to convert the rotary motion to a linear stroke, the DC motor having sufficient torque and the transmission assembly having sufficient reduction to provide a stroke of about at least three inches with a tensile pull of at least 15,000 pounds in less than about 120 seconds using a power signal at the motor of less than about 1.9 amps and 600 volts;   a perforating gun, the perforating gun including at least one gun sub; and   a switch that receives the electrical power conveyed down the insulated wireline, the switch configured to selectively pass the electrical power to the gun sub for the firing thereof and to the setting tool.   
     
     
         2 . The well servicing system of  claim 1 , wherein the transmission assembly comprises a gear box driven by the motor and a screw rotationally driven by the gear box. 
     
     
         3 . The well servicing system of  claim 2 , wherein the gear box provides a reduction of approximately in the range of 30:1 to 350:1. 
     
     
         4 . The well servicing system of  claim 2 , wherein the gear box comprises a planetary gear assembly. 
     
     
         5 . The well servicing system of  claim 4 , wherein the planetary gear assembly comprises a ring gear that is integral with a housing of the setting tool. 
     
     
         6 . The well servicing system of  claim 5 , wherein the ring gear is part of the housing. 
     
     
         7 . The well servicing system of  claim 2 , wherein the transmission assembly includes a motion convertor adapted to convert the rotary motion of the screw into linear motion. 
     
     
         8 . The well servicing system of  claim 1 , further comprising an assembly adapted to prevent counter-rotation of the setting tool. 
     
     
         9 . The well servicing system of  claim 1 , wherein the motor and the transmission assembly are adapted to provide a stroke of about 3 inches with a tensile pull of at least 15,000 pounds in less than about 60 seconds using an input power to the motor of less than about 750 watts. 
     
     
         10 . The well servicing system of  claim 1 , wherein the motor and the transmission assembly are adapted to provide a stroke of about 8 inches with a tensile pull of at least 15,000 pounds in less than about 60 seconds using an input power to the motor of less than about 750 watts. 
     
     
         11 . The well servicing system of  claim 1 , wherein the motor and the transmission assembly are adapted to provide a stroke of about 8 inches with a tensile pull of at least 15,000 pounds in less than about 40 seconds using an input power to the motor of less than about 750 watts. 
     
     
         12 . The well servicing system of  claim 1 , wherein the motor and the transmission assembly are adapted to provide a stroke of about 8 inches with a tensile pull of at least 15,000 pounds in less than about 60 seconds using an input power to the motor of less than about 500 watts. 
     
     
         13 . The well servicing system of  claim 1 , wherein the setting tool further comprises a controller, the controller adapted to determine when sufficient power is available to operate the setting tool and to activate the setting tool when sufficient power is available. 
     
     
         14 . The well servicing system of  claim 13 , wherein the controller is further adapted to send data regarding the operation of the setting tool while downhole in the well to a computer system located on the surface of the well. 
     
     
         15 . The well servicing system of  claim 13 , wherein the controller is adapted monitor the current draw of the motor and to stop the motor if the current draw is above 1.9 amps. The well servicing system of  claim 15 , wherein the controller is adapted to restart the motor after waiting a specified period of time. 
     
     
         17 . The well servicing system of  claim 13 , wherein the controller is adapted to be programmed while downhole in the well. 
     
     
         18 . The well servicing system of  claim 17 , wherein the switch has a maximum current limit of approximately 1.9 amps, and the controller is adapted to be programmed while downhole in the well to allow the current to the motor to exceed 1.9 amps. 
     
     
         19 . The well servicing system of  claim 17 , wherein the controller is adapted to be programmed while downhole in the well to adjust the stroke length. 
     
     
         20 . The well servicing system of  claim 13 , wherein the controller is adapted to monitor the stroke length and to stop the motor when the full stroke has been achieved. 
     
     
         21 . The well servicing system of  claim 1 , further comprising a gauge incorporated inside the setting tool, the gauge adapted to measure one of more fluid parameters in the well and store the measurements. 
     
     
         22 . The well servicing system of  claim 22 , wherein the setting tool is adapted to send data regarding the fluid parameter to a computer system located at the top of the well. 
     
     
         23 . The well servicing system of  claim 1 , further comprising a multi-element dynamic seal. 
     
     
         24 . The well servicing system of  claim 1 , further including an anti-rotation assembly having a key assembly including a key, a sleeve, and a grooved shaft, including a fastener for engaging the key to the sleeve. 
     
     
         25 . The well servicing system of  claim 1 , wherein the d.c. motor includes a multi-step motor shaft and a multi-step bore for receiving the multi-step shaft. 
     
     
         26 . The well servicing system of  claim 1 , wherein the transmission assembly includes a linear actuator having a thrust bearing and keeper assembly. 
     
     
         27 . The well servicing system of  claim 1 , wherein the transmission assembly includes at least one pin-in-hole assembly to transmit motion therethrough.