«Oilfield engineering»

Intelligent completion strategy based on differential monitoring of multi-phase fluid inflow into a well

UDC: 622.276.5.05
DOI: 10.33285/0207-2351-2022-4(640)-37-52

Authors:

¹ National University of Oil and Gas "Gubkin University", Moscow, Russia
² Institute of Oil and Gas Problems of the Russian Academy of Sciences
³ SevKomNeftegaz, Gubkinsky, Yamalo-Nenetsky autonomous territory, Russia

Keywords: monitoring, horizontal wells, intelligent completion, pilot work

Annotation:

The complex layered heterogeneous deposits of the Severo-Komsomolskoye field are development by horizontal wells, in which autonomous inflow control devices (AICD) are installed as part of a pilot work (PW). Their use makes it possible to prevent early coning and gas breakthroughs in conditions of long horizontal ends, to limit sand production in deposits with extremely low mechanical strength of terrigenous rocks of the Pokurskaya suite of the Cenomanian stage. The AICD studied zones are separated by annular swelling packers. An effective way to monitor wells with AICD is non-standard well logging (WL). The use of standard geophysical methods is impractical due to the complexity of the tasks set and the high costs of preparing and conducting well operations.

The analysis of the use of a non-standard extended WL complex is given. Passive acoustic (spectral noise logging), thermal hydrodynamic modeling were used to evaluate the performance of the reservoir behind the liner with AICD and diagnostics of the technical state of the hanger and annular swelling packers.

The result of the work carried out is well completion innovative strategy and its optimization to improve the efficiency of geological-technical measures (repair and isolation works) using a two-packer layout.

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