«Oilfield engineering»

New technological approaches to improving efficiency of thin oil rims development in complicated facies conditions

UDC: 622.276.1/.4
DOI: 10.33285/0207-2351-2021-12(636)-5-18

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: thin oil-rim, complicated facies conditions, intelligent completion, autonomous inflow control devices, production logging technology, inflow control, horizontal wells

Annotation:

The efficient development of complicatedly-built inter-bedded heterogeneous reservoirs of oil fields by horizontal wells is an unsolved problem. In the framework of pilot testing, the problem is solved by installation of autonomous inflow control devices (AICD) preventing early coning and gas breakthrough in conditions of long horizontal sections and reducing sand production from drained rocks with extremely low strength. One of the methods used for effective monitoring of horizontal sections by AICDs is production logging testing (PLT). However, due to the complexity of the set tasks, the use of conventional logging techniques makes the PLT unfeasible. The article considers the experience of using an advanced set of production logging testing together with passive acoustics (spectral noise logging) and thermal hydrodynamic modelling. The effective solution of the problem of estimation of reservoir reserves recovery, opened by wells with autonomous inflow control devices (AICD) requires additional diagnosing of the technical state of a hanger and bore-hole swelling packers. The technological effect is reached thanks to getting new data obtained as a result of production logging testing and successfully carried out geological-technical measures, particularly repair-insulation works with a two-packer assembly. As a result of the performed diagnostics, the new well completion strategy was substantiated and the trends of its optimization were determined.

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