Topic: "Coiled Tubing Water Hammers and Gas Separators: Get There, Get it Done and Get Back ”
Presented by: Dr. Jack Kolle, General Manager, Tempress (a subsidiary of Oil States International)
Venue - To be announced
Lunch will be available around 11:30am with the presentation following at or around noon.
Extended reach horizontal drilling and multistage hydraulic fracturing have led the boom in U.S. onshore oil and gas production. Wells now reach over 10,000 feet horizontally and casing sizes have increased. Both factors make it more difficult to get to TD and remove sand and cuttings. This presentation will provide operating principles, best practices and case histories of two tools that reduce well intervention job time and risk in extreme reach wells: (1) a water hammer to extend the reach of coil and (2) a gas separator that enables reliable milling while pumping nitrogen to circulate wells with low pressure zones.
The water hammer incorporates a self-piloted poppet valve that pulses the fluid flow to generate percussive water hammer impacts at the bottomhole assembly. The impact force pulls the coil into the well and vibrates the entire coil string, reducing the friction drag. This tool has extended the horizontal reach of coiled tubing milling to over 10,000 feet. The fluid pulsations also help move cuttings and sand out of the well. The tool can be run with a motor and mill or with a jet sub. Current applications include milling of composite bridge plugs, milling ball seats, cement milling, toe prep, scale cleanout and fishing.
Nitrogen is often pumped when circulation is lost but this can lead to motor failure. The motor gas separator bypasses nitrogen above the motor allowing it to operate at its design flow rate while providing as much nitrogen as needed to circulate the well. These tools provide reliable, one-trip millouts of multistage completions in wells where lost circulation is a risk. These tools can be run in tandem with the water hammer for extreme reach wells. Job planning software is provided to ensure optimal motor operation throughout the job.
Dr. Jack Kolle is General Manager of Tempress a subsidiary of Oil States Energy Services. He has developed a range of coiled tubing well intervention and drilling tools including the HydroPull® water hammer, downhole gas separators high-pressure jet drill and turbodrills. He has published extensively in the area of drilling mechanics and holds 14 patents.
Registration will open soon.