The Successful Development and Installation of a New Single-Trip Multizone Completion System Developed for the Deepwater Gulf of Mexico Lower Tertiary Formation

Grigsby, Tommy; Jannise, Ricki; Goodman, Archie; Techentien, Bruce; Schexnailder, Michael; Navaira, Guy

doi:10.4043/27222-ms

Cited by 5 publications

References 5 publications

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First Offshore Hydraulic-Jet-Fracturing Multizone Completion Application Case Study: Challenges and Lessons Learned in the Bozhong Oil Field, Bohai Bay, China

Zhang

et al. 2020

SPE Asia Pacific Oil &Amp; Gas Conference and Exhibition

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Defining pressure dependent permeability (PDP) behaviour in coalbed methane (CBM) or coal seam gas (CSG) reservoirs using reservoir simulation is non-unique based on the uncertainty in coal properties and input parameters. A diagnostic fracture injection test (DFIT) can be used to investigate bulk permeability at a reservoir level and at lowered net effective stress conditions. As coal has minimal matrix porosity and under DFIT conditions cleat porosity is fluid saturated with reasonably definable total compressibility values, the DFIT data can provide insight into PDP parameters. At pressures above the fissure opening pressure, pressure dependent leak off (PDL) behaviour increases exponentially with increasing pressure. Many authors have noted that with decreasing pressure PDP declines exponentially with increasing net effective stress. Thus, PDP behaviour can be defined by PDL. In this paper, we show how combined analyses, using typically collected field data, can be used to better define and constrain the modelling of PDP. We illustrate this process based on a well case study that includes the following data: fracture fabric and porosity reasonably defined from image log and areal core studies; DFIT data acquired under initial saturation conditions; hydraulic fracturing data; and longer term production data. These analyses will be integrated and used to constrain the parameters required to obtain a rate and pressure history-match from the post-frac well production data. This workflow has application in other coal seam gas cases by identifying key variables where hydraulic fracturing performance has been unable to overcome limitations based on pressure or stress dependent behaviours and often accompanied by low reservoir permeability values. While this is purposely targeting areas where only typically collected field data is available, this workflow can include coal testing data for matrix swelling/shrinkage properties or other production data analysis techniques.

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First Offshore Hydraulic-Jet-Fracturing Multizone Completion Application Case Study: Challenges and Lessons Learned in the Bozhong Oil Field, Bohai Bay, China

Zhang

et al. 2020

SPE Asia Pacific Oil &Amp; Gas Conference and Exhibition

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Development and Qualification of a High Angle Multi-Frac (HAMF) Completion System for Deepwater Subsea Wells

Vitthal,

Goncu,

Spencer

et al. 2024

SPE Annual Technical Conference and Exhibition

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Deepwater developments in the Gulf of Mexico have historically focused on high kH (∼10,000 – 100,000 md-ft) Miocene reservoirs. Production from a single sand in these prolific reservoirs has been sufficient to justify the high costs of a deepwater well. In the last decade, there have been significant volumes discovered in Upper/Lower Wilcox age reservoirs in the Gulf of Mexico. These new discoveries typically comprise of stacked sets of lower permeability (1 – 20 md) sandstones. Several of these Wilcox discoveries have been successfully developed using cased hole vertical wells and single trip multi-zone frac-pack completion systems. Despite some of the successes, the project economics of vertical fractured wells in the lower Wilcox remains challenging due to low recovery factors (8 – 20%) and low EUR/layer. This paper describes an alternative lower completion concept for developing these lower Wilcox reservoirs referred to as a High Angle Multi Fractured (HAMF) well design concept. The value of the HAMF concept was assessed via reservoir modeling to understand it's value for low mobility reservoirs. Supporting evidence on the EUR uplift from analogue field studies and analytical modeling is also shown. Functional specifications for the completion system and the frac sleeve were developed based on the reservoir and operational requirements for subsea installations. Following design reviews, a completion system was selected that met the requirements, albeit with some modifications. The selected sleeve system was designed, manufactured, and went through comprehensive qualification and testing. A horizontal cemented 10 sleeve system was installed and hydraulically fractured in a land trial to evaluate the system functionality. Diagnostic evaluation including downhole gauges, radio-active tracers and 3D acoustic imaging are presented.

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The Qualification Methodology Behind an Integrated Multizone Frac Pack and Intelligent Completion for the Lower Tertiary

Jannise

Joubran

Gavin

et al. 2017

Day 2 Tue, May 02, 2017

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Currently, ultradeepwater single-trip multizone completions are commonly run (Techentien et al 2016). Looking forward, improvement and progress can be achieved by using run history, lessons learned, and best practices. In the Lower Tertiary of the Gulf of Mexico, multizone completions in which differential pressure ratings of 15,000 psi are necessary, all operational stages should be considered, including stimulation treatments and production depletion. To date, little information is published about specific downhole component design methods or standard qualification processes required by operators and/or service companies. The objective of this paper is to help educate the industry by presenting the approach of one service company to address the 15,000 psi Lower Tertiary challenge. This paper discusses the innovative qualification processes of all subsystems, including the intelligent upper completion, interfacing intermediate completion, and the sandface lower completion. The proven success of the industry-standard 10,000-psi generation IV (Clarkson et al. 2008) multizone frac-pack system (Grigsby et al. 2016) provides an installation and operating standard that is used as a basis for a 15,000-psi pressure-rated multizone system. Operators were interviewed, internal discussions with all stakeholders were conducted, and thorough reviews of current and future regulatory standards were completed to develop this methodology. This paper presents the results of these discussions and reviews the downhole components using a detailed qualification process. It also discusses the test procedures for full system validation to satisfy operator and regulatory requirements. The result is a reliable 15,000-psi differential, single-trip multizone system that incorporates an intelligent completion string for interventionless zonal isolation, control, and monitoring over the life of the well.

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The Successful Development and Installation of a New Single-Trip Multizone Completion System Developed for the Deepwater Gulf of Mexico Lower Tertiary Formation

Cited by 5 publications

References 5 publications

First Offshore Hydraulic-Jet-Fracturing Multizone Completion Application Case Study: Challenges and Lessons Learned in the Bozhong Oil Field, Bohai Bay, China

First Offshore Hydraulic-Jet-Fracturing Multizone Completion Application Case Study: Challenges and Lessons Learned in the Bozhong Oil Field, Bohai Bay, China

Development and Qualification of a High Angle Multi-Frac (HAMF) Completion System for Deepwater Subsea Wells

The Qualification Methodology Behind an Integrated Multizone Frac Pack and Intelligent Completion for the Lower Tertiary

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