Abstract

In response to the drop In oil prices a decade ago. Husky Oil redesigned its EOR research management processes with the goal of increasing investment efficiency and reducing process development time. This paper describes that system. The sudden change in the crude price outlook dictated three key considerations for the new management process.

  1. The price change meant that recovery methods under development in the late seventies and early eighties were no longer applicable. A complete swift in target process threshold prices was required.

  2. Research had to be driven by the needs and constrains of the business.

  3. The need is to match the recovery processes to the reservoirs.

  4. Industry multi-company research programs were focused on processes that were not viable in the new price environment Also target reservoirs were not similar to the vast majority of the fields found in the Lloydminster area.

The new R&D management system that resulted from Husky's redesign has the following key features

  1. Business questions are identified first. Then the technical questions that need to be answered to meet the business need are derived. Research is focused on answering these questions.

  2. Teams consisting of geologists, operations, reservoir and research engineers are used t0 screen processes and match them to reservoirs.

  3. EOR process ideas are generated from a clean slate with the business constraints of the day in mind.

Introduction

Husky Oil has a great deal of interest In the Lloydminster area. The company holds leases on much of the land and has spent a large amount of operating and capital money In the drilling and completion of wells. Also an extensive pipeline system, has been installed Lo carry the oil and water to various locations for upgrading and disposal respectively. There are approximately 12,000 wells In the Lloydminster area penetrating over 1,000 separate pools. Husky Oil owns approximately 4,000 wells. The majority of the wells penetrate into the over 45 regional or channel sands that have been recognized and designated by the Saskatchewan Energy and Mines (SEM). Total Husky controlled original oil-in-place is estimated at 0.7 × 10 9 m3. Over 40% of the oil-in-place in L1oydminster is contained in reservoirs less than seven meters thick (Miller, 1987)

These reservoirs have been described as fine to very fine grained quartzose sand zones with porosities about 30% and permeabilites generally in the 0.5 to 10 Darcy range. Oils are to 10 ° API to 16 ° API with viscosity between 500 mPa.s and 50.000 mPa.s. A small fraction but a significant volume of the oil in place (about 50x106 m3) is contained in channel sand deposits with thicknesses in the 10 m to 30 m range. The sand is typically located at a depth of about 400 m to 500 m at original pressures of about 3,000 kPa to 4,000 kPa and temperatures ranging from 20 °C to 30 ° C. The connate water saturation on the average is about 25%.

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