Artificial lift

In-Well Dual Canned ESP Completion Test To Validate Safe Deployment in Deep Water

Deepwater and ultradeepwater completions use numerous hydraulic control lines for control and actuation of downhole equipment.

jpt-2016-04-cannedespfig1.jpg
Fig. 1—Example of the multiple control lines and electric cables located around the upper production tubing above the canned-ESP equipment and below the tubing hanger.
Source: OTC 26002

Deepwater and ultradeepwater completions use numerous hydraulic control lines for control and actuation of downhole equipment. Incorporating a completion system with an in-well lift such as electrical submersible pumps (ESPs) increases the number of electrical lines needed. This paper discusses the planning and execution of a stack-up test (SUT) to determine whether a completion system incorporating a dual canned ESP system with multiple control lines can be deployed efficiently and safely in a deepwater, high-pressure/high-temperature (HP/HT) environment.

Introduction

Lower Tertiary Play Characteristics and Challenges. Fields in the Lower Tertiary play, also known as the Paleogene, have low porosity (15–25%) and low permeability (<10 md), which reduce the amount of oil that can be recovered without assistance. In addition, Lower Tertiary water depths range from 5,000 ft to more than 10,000 ft; reservoirs are deeper than 26,000 ft; pressures range from 25,000 to 30,000 psi; and temperatures can be higher than 300°F, further complicating production.

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