In the oil and gas industry, drilling into the earth to collect resources from reservoirs within the ground is common practice.  Often, and for various reasons, the drill string becomes stuck downhole.  Stuck pipe situations prevent the drill rig from continuing operations, resulting in costly downtime.  Therefore it is critical to resolve the problem as quickly as possible.

Currently, there exists a lack of industry-wide standards for pipe recovery.  Poor well control during wireline intervention can lead to disaster.  Many Health, Safety & Environmental (HSE) incidents are caused by a lack of control over the well, torque release and possible spillages while wireline operations take place.

Additionally, operators are presently unable to safely pull and/or rotate the bottom hole assembly during pipe recovery operations using traditional wireline methods.  This means that, amongst other effects, the wireline must be removed before the result of freeing the stuck pipe is known.  Also, the use of additional equipment, such as long bails, pump-in sub and exposed high pressure mud lines are currently required for pipe recovery.  Further, there are a number of control issues with High Pressure High Temperature (HPHT) wells with the current under-designed wireline intervention solutions.

The Smart Sub attempts to overcome at least in part the aforementioned disadvantages of previous wireline intervention apparatus and techniques.

SMART SUB features an innovative system available for multiple operations. It provides well control and allow wireline operations through a side entry without interference with drilling rig’s top drive system. It’s unique design is compatible with all industry recognized grease injection and pack off systems. It is designed to comply with API specifications and undergo extensive qualification testing to ensure full functionality.

Features:

Applications:

  • Dual Side Entry
  • 3 1/2" ID Side Entry - Enable Wireline Tool Entry from top
  • Real Time Pressure Monitoring
  • API-6A Specifications
  • Lifting Cap
  • Lifting Weight
  • Floater or Jack up enabler
  • Pipe Recovery Operations
  • Pressurized Cement Evaluation
  • Pump Down Operations
  • MPD Wireline Logging
  • Thru Bit Logging
  • Slickline Operation

Advantages:

  • Safe and simple rig up
  • Keeps the wireline a safe distance from the traveling block and top drive
  • Wireline tools can be deployed through the top side
  • Allows pumping and circulation at any time during wireline operations
  • Does not require additional personnel to operate
  • Provides additional well control during Wireline operation
  • Eliminates requirement to change to long bails
  • Eliminates requirement of unnecessary equipment such as Shooting Nipple, Pump In Sub and HP mud line on rig floor
  • Enable safe tensile pull on the drill pipe
  • Enables driller to apply torque on the drill pipe
  • Prevents drilling fluid spill on rig floor
  • Wipes wireline clean as it is pulled from the well

Specifications:

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