OREANDA-NEWS. Gazpromneft-Khantos, a subsidiary of Gazprom Neft, has completed 30-stagehydraulic fracturing (fracking) operations at the Yuzhno-Priobskoye field, Khanty-Mansiysk Autonomous Okrug — the first time such an operation has ever been undertaken in the Russian oil and gas industry, completion of which has been made possible thanks to the application of new technologies, which now promise greater effectiveness in the company’s development of its assets. Hitherto, the most extensive such operation undertaken by Gazprom Neft had been an 18-stage fracking operation through a single horizontal well shaft, achieved in March 2016, again at Gazpromneft-Khantos’ Yuzhno-Priobskoye field.

The 30-stage fracking operation was undertaken in what is a record horizontal well shaft for the Yuzhno-Priobskoye field, running for 1,500 of the well’s total length of more than 4,600 metres. The oil-bearing strata lies at a depth of more than 2,600 metres. Isolation of those stretches in which fracking has already been completed is achieved through the use of a multi-set packer (a device for ensuring the hermetic sealing of separate well sections), running the full length of the flexible lifting pipe. Managing the 30-stage fracking operation required 1,200 tonnes of proppant. Another feature of the well involved the cementing of the entire length of the horizontal section, allowing greater efficiency in managing fissures, thanks to the isolation achieved through the cement column.

The anticipated operational capacity of the new well is likely to be in excess of 130 tonnes of oil per day, some 20 percent higher than forecast levels following lower-stage fracking operations. The application of non-ball-and-socket technology in fracking strata means the company also has the opportunity not just to speed up the launch of the well but also undertake geophysical investigations throughout the entire period of its operation, as well as undertaking investigations in re-fracturing.

Vadim Yakovlev, First Deputy CEO, Gazprom Neft, commented: “Gazprom Neft’s long-term development strategy is inextricably bound with the search for effective production technologies. Improving oil recovery and bringing into development reserves previously considered non-viable are key components of the company’s Technology Strategy, the implementation of which is, already, allowing us to apply advanced techniques in enhancing oil recovery, and which we will, in the future, be able to use throughout our other assets.”