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Drilling of Multilateral Wells in Kuwait Aided With Geochemical Analysis

Fig. 1—Seismic coherence map along a horizontal section of a Burgan producer is used to locate areas of faulting. The coherent beige areas in the cross section show no faulting. All other colors (incoherent areas) show faulted areas ranging through dark blue, yellow, orange, and red colors (less faulting to more faulting, respectively).

The Burgan reservoir consists of vertically stacked channel sands along with a fault network connected to the aquifer and contains highly viscous reservoir fluid. This dramatically enhances the water mobility and results in severe premature water breakthrough, bypassing zones of oil. This paper describes the use of real-time geochemical analysis to support geosteering of a smart multilateral well located in one of the highest-potential-flow areas of Kuwait.

Introduction

The Minagish field in Kuwait was discovered in 1959 and is located in the southwestern part of the country. It contains several reservoir intervals in its stratigraphic column, varying from Early Jurassic to Late Cretaceous. The field is situated 12 km northwest of the west Umm Gudair field. The field has been penetrated by more than 180 wells, to contact not only the middle and lower Minagish reservoirs of the Lower Cretaceous but also other shallow reservoirs such as the Mishrif/Rumaila carbonates and the Wara/Burgan sandstone. The Minagish field structure of the Wara and Burgan formations is a closed elongated asymmetrical anticline oriented in a north/south direction. The top of the Burgan structure is located at approximately 5,500‑ft true vertical depth subsea.

This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper IPTC 16617, “Drilling of Multilateral Wells Aided With Geochemical Analysis, Kuwait,” by Taher El Gezeery, Abdul Aziz Ismail, Khalaf Al Anezi, Monirah Al Jeaan, Jeevan Kumar Silambuchelvan, and G.S. Padhy, Kuwait Oil, and Atul Wasnik and Ahmed Al Shoeibi, Geolog International, prepared for the 2013 International Petroleum Technology Conference, Beijing, 26–28 March. The paper has not been peer reviewed. Copyright 2014 International Petroleum Technology Conference. Reproduced by permission.
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Drilling of Multilateral Wells in Kuwait Aided With Geochemical Analysis

01 February 2015

Volume: 67 | Issue: 2

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