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Petroleum Production Engineering, 2nd Edition by Xuehao Tan, Xinghui Liu, Boyun Guo

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Chapter 15

Well Workover

Abstract

Well workover refers to oil and gas well intervention involving invasive techniques, such as wireline, coiled tubing, or snubbing. It is a process of pulling and replacing a well completion to repair an existing production well for the purpose of restoring, prolonging, or enhancing the production of hydrocarbons. This chapter describes types of workover operations and associated equipment. Technical contents include work string mechanics and fluid mechanics in vertical and horizontal wells for wellbore cleaning and repair. Calculations are briefly outlined and illustrated with computer programs.

Keywords

Workover; repair; treatment; string; fluids

15.1 Introduction

Well workover refers to any kind of oil and gas well ...

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