Coil Tubing Technology Offers Great Efficiency in Fracking
“Since we have real-time bottom-hole pressure, we have the ability to see screen-outs coming and have been able to avoid them by changing pump rates and downhole concentrations on the fly. Screen-outs are something we plan for and encounter every day. We have our circulation string in the well, so we can circulate the sand back to the surface and then move to the next stage.”
This clean out process is often completed within two hours, Willems said.
The Multistage technology can be used with any number of stages, allows for precise location of the fracture, requires one-third of the horsepower used in plug and perf and ball-sleeve completions, which means smaller frac spreads and less equipment at a well site, as well as lower fuel costs, less traffic and a smaller wellsite footprint, according to the company’s website.
“The technology we’ve developed is extremely simple and reliable,” said Willems. “Because we’re fracking individual reservoirs one at a time, you know where the sand and fluids are going,” Willems told Rigzone.
Companies that have been using plug and perf and who are making money might not see this process as efficient, but production is being left behind, and the difficulty and inefficiency in restimulating wells to access more oil and gas resources means it is important to complete a well right the first time.
Willems said the NCS’ customers have been seeing improved recovery rates of 73 to 100 percent. Most of their customers operate in shale plays or tight sand plays internationally.
To date, NCS has completed 78,000 stages in a little more than 5,000 wells. Willems said the stage count in unconventional wells continues to rise in the United States, averaging 53 to 54 stages in plays such as the Permian Basin, Cleveland sands, the Eaglebine and the Marcellus. In a few weeks, the company will work on a well with more than 80 stages.
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Senior Editor | Rigzone