Implementation of an Integrated Approach to Develop Low-Productivity Reservoirs of the Priobskoye Field

摘要

Horizontal multi-fractured wells nowadays are the most common way of low-permeability reservoirs exploitation either in Russian and foreign oilfields.Besides its high efficiency such completion has a lot of factors(usually undefined)which can together significantly decrease oil rate.Here some of them are listed: 1.Drilled horizontal well length and producing well length 2.Number of created and producing fractures 3.Fracture length by design and by the actual production and well-test 4.Fracture location in relation to well(azimuth and initialization interval).5.Interference between neighborhood wells through the fractures during injection and production 6.Etc.The paper deals with most interesting parts of a complex project which purpose is to realize the multifractured well potential and production system diagnostics.There are three main issues in this paper: Designing – filed-sector choosing,optimum spacing and well completion calculations Realization – well construction and studies conduction Analysis – comparison between new project wells and common wells in the neighborhood,geological and hydrodynamic model correction Current primary project result is a significant exploitation system efficiency growth after a change of well and fracture directions(perpendicular to the wellbore).The secondary but anyway very important results are learned lessons and new competences in well construction and studies.