Abstract

Sand production is always a challenge for oil production companies worldwide. Several factors can cause sand production, poor cementing material in the reservoir rock, high production rates which cause high draw down result in an unstable zone. The studied field is Belayim field consists of 105 wells; 90 of these wells are oil producing wells, 11 are water injection wells, two wells are dump flood wells, and two wells are water source wells. The main target was to perform a gravel pack job on a high permeability water source well to deliver a planned rate of 25,000 BOPD. A study has been done for the formation, and the history of gravel pack jobs done in the company fields to provide the optimum solution for the target well. The well was considered as a critical well because of the number of challenges and because of its importance to the company in supplying the field with the injection water, which was down for months. The well completion design, sizes, and the pumping techniques were accepted from the company well review team. The well has a problem from high losses resulting from the high permeability and long interval. The fluid losses should be controlled before running in with the completion string and equipment and pumping the gravel pack treatment to avoid early screen-out. After pay zone perforating, the well suffered from high losses as expected.

Highlights

  • Water flooding considered to be one of the successful methods of increasing and enhancing the oil production through sweeping the reservoir which cause increasing in the reservoir pressure, and enhancing the productivity in the oil producer wells [3]

  • The company depends on water source wells to deliver large volumes of water to offshore platforms to be used for water injection

  • A gravel pack job was successfully done on the 500 ft interval perforation with non-uniform permeability using the pulsing pumping technique of the gravel with clean carrier fluid

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Summary

Introduction

Water flooding considered to be one of the successful methods of increasing and enhancing the oil production through sweeping the reservoir which cause increasing in the reservoir pressure, and enhancing the productivity in the oil producer wells [3]. The company depends on water source wells to deliver large volumes of water to offshore platforms to be used for water injection. Mineral Quartz Calcite Dolomite Microcline Plagioclase Orthoclase Kaolinite and lIlite in a tilted fault block. The pool is sealed by a simple toplateral fault combination. The reservoirs are fine- to medium-grained quartz arenites, deposited in coastal and fluvial environments. Most of the oil is produced from a channel in the Wata Formation. Thicknesses and reservoir properties vary considerably, both within and between the reservoir formations. The Matulla Formation has a weak aquifer drive, whereas the natural drive in the Wata Formation is solution gas.[5]

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