engleski

Frac-Pack Well Stimulation

During the hydrocarbon production, the formation sand movement has a frequent negative influx to the process because of its hazardous nature. Gravel pack placement is a common well treatment procedure for prevention of formation sand flow to the wellbore. This method is used in petroleum engineering industrial practice since 1950s. Based on it as a conventional technique Frac-Pack method came up as a new modern technology of sand control containing gravel pack placement and hydraulic fracturing all-in-one procedure. In Frac-Pack application, the appropriate viscosified fluid and proppant selection has a key role for achievement of desired fracture height, length and width. Fracture dimensions are controlled by TSO (Tip-Screenout) fracturing procedure. In this paper basic types of proppant are presented as well as resin coated sand, which improves packing of fracture with proppant. Numerous and various Frac-Pack fluids able to resist the high temperature and pressure are described. Downhole Frac-Pack equipment is also presented. Paper also contains a field example of Frac-Pack application performed on one of the Adriatic offshore gas fields, Republic of Croatia.

Frac-Pack; Well Stimulation; Fracturing; Proppant; TSO; Completions

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