CASE HISTORY | bakerhughes.com Baker Hughes Drilling Services Determined Reservoir Quality for Deepwater Operator Location: Malaysia A deepwater operator in Malaysia planned to drill a well in a sand reservoir and needed to minimize the risk of reduced recovery due to potential fault compartmentalization. The plan was to get as close as possible to the target reservoir’s base without penetrating the nonproductive mass-transport deposit (MTD) underneath. To minimize penetration of the nonproductive MTD at the heel of the well, the target depth for the horizontal section was adjusted based on formation information gathered using a number of Baker Hughes logging-whiledrilling (LWD) services. To drill the well, Baker Hughes deployed a 6¾-in. bottomhole assembly (BHA) that included its AutoTrak™ G3 rotary steerable drilling system (RSS). With the AutoTrak G3 RSS, the LWD sensors are placed directly above the steering unit, enabling the delivery of accurate, near-bit measurements. This is combined with a reliable, precise steering response that ensures better borehole quality. Results nnAvoided underlying MTD nnDeployed The LWD services Baker Hughes provided included the LithoTrak™ advanced LWD porosity service, which delivered precise neutron porosity and formation density logs at rapid sampling rates, and the TesTrak™ formation pressure-while-drilling service, which helped determine reservoir quality, fluid type, and the effectiveness of nearby well water injection support for the reservoir. In addition, the Baker Hughes AziTrak deep azimuthal resistivity LWD system was used to help the operator visualize location, formation structure, and navigational headings in real time. This project marked the first deployment of the AziTrak system in Malaysia, and the first time the system was used to avoid an MTD. ™ first AziTrak service in Malaysia Challenges nnProduction nnTurbitide well formation nnDepth uncertainty and uncertainty in local dip variations Baker Hughes solution nnAutoTrak nnAziTrak G3 RSS LWD system nnLithoTrak LWD service nnReservoir Navigation Services nnTesTrak service A B C These plots show where the well trajectory intersected overlying formations and landed in the target reservoir (A), the MD of 492 ft (B), and the distance-to-bed boundary with the centered well’s trajectory (C). CASE HISTORY The LWD data gathered was used to support the Baker Hughes Reservoir Navigation Services (RNS) in detecting the top of the underlying MTD. RNS detected the distance to the bed boundary with centered well-trajectory detection, which was sensitive to nearby conductive boundaries between the reservoir’s sands and the MTD shales. The top of the underlying MTD was first detected 2.0 m (6.6 ft) below the well trajectory. The operator decided not to drill closer than 1.4 m (4.6 ft) to the base of the target reservoir before navigating away from it. RNS helped achieve a total production length of 150 m (492 ft) in the target reservoir. This well is now a successful producer, and confidence in the services provided has resulted in additional use of Baker Hughes services on future wells for this operator. Disclaimer of Liability: This information is provided for general information purposes only and is believed to be accurate as of the date hereof; however, Baker Hughes Incorporated and its affiliates do not make any warranties or representations of any kind regarding the information and disclaim all express and implied warranties or representations to the fullest extent permissible by law, including those of merchantability, fitness for a particular purpose or use, title, non-infringement, accuracy, correctness or completeness of the information provided herein. All information is furnished “as is” and without any license to distribute. The user agrees to assume all liabilities related to the use of or reliance on such information. BAKER HUGHES INCORPORATED AND ITS AFFILIATES SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, PUNITIVE, EXEMPLARY OR CONSEQUENTIAL DAMAGES FROM ANY CAUSE WHATSOEVER INCLUDING BUT NOT LIMITED TO ITS NEGLIGENCE. © 2015 Baker Hughes Incorporated. All rights reserved. 42364 02/2015