A Simple Strategy For Subsurface Delivery of Effective Development Wells – Field Examples

2021 ◽  
Author(s):  
Abdulganiyu Salako ◽  
Bosun Pelemo ◽  
Modupe Otubanjo ◽  
Zainab Lawan ◽  
Elizabeth Olushoga ◽  
...  
Keyword(s):  
Niger Delta ◽  
Development Process ◽  
Field Development ◽  
Simple Strategy ◽  
Conventional Procedure ◽  
Drain Hole ◽  
New Process ◽  
Effective Development ◽  
Offshore Field ◽  
Productive Time

Abstract Well delivery is an expensive scope in the exploration and field development process. Among other drivers, an ideal well must be delivered safely while achieving top-quartile performance on cost, schedule and business objectives. However, delivering an ideal well amid subsurface uncertainties and tightening budgets is usually challenging. As part of the drive for continued value creation, this paper presents an empirical process-improvement initiative for de-risking and optimizing the landing of the drain-hole sections of highly deviated wells amid subsurface uncertainties and at minimal costs. A review of the conventional procedure for executing subsurface scope of the delivery of development wells has been accomplished. The review takes advantage of a combination of recent experiences in delivering four horizontal development wells in an offshore field in the Niger Delta, in addition to a catalogue of available knowledge and best practices from other fields and operators. This review culminates in an improved well delivery optimization process and practice. In addition to promoting operational HSE excellence, it increases the chance of delivering an ideal well, including the mitigation of a subsurface-related non-productive time (NPT) and other related costs. As a complement to the practice, a simple workflow is provided to aid robust decision-making and facilitate applications in practice. For completeness, relevant examples are included to demonstrate the applicability of this new process.

Approach for Effective Design and Cost Estimation of New built / Conversion FPSO (2014)

2014 ◽  
Author(s):  
Upendra Malla ◽  
Krishna M. Karri
Keyword(s):  
Cost Estimation ◽  
Structural Design ◽  
Effective Means ◽  
Step Method ◽  
Support Design ◽  
Field Development ◽  
Early Stages ◽  
The Cost ◽  
Offshore Field ◽  
Effective Design

Floating Production Storage and Offloading (FPSO) sizing and cost estimation has become a challenging task at the early stages of offshore field development. During the early stages of field development designer needs to size and estimate cost in order to decide feasibility of the project. This paper describes a step by step method used to size and estimate the cost of a new built (or) converted FPSO based on basic engineering, existing FPSO data and corresponding metocean criteria for a particular location. This step by step approach covers FPSO sizing, hull structural design, mooring sizing, topsides support design and steel renewal using offshore classification rules and regulations. FPSO cost is estimated based on the design particulars (i.e. hull weights, FPSO particulars, mooring sizes etc.) and current market unit rates. This approach is an effective means to size and estimate cost of an FPSO at early stages of field development which saves overall time and cost for a client.

Participation in Community Development Micro Projects in Niger Delta Region of Nigeria: Implications for Social Work Education and Practice

2021 ◽  
Vol 3 (4) ◽  
pp. 335-352
Author(s):  
Oghenechoja Dennis Veta
Keyword(s):  
Niger Delta ◽  
Development Process ◽  
Survey Design ◽  
Group Discussion ◽  
Delta Region ◽  
Cross Sectional Survey ◽  
Cross Sectional ◽  
Niger Delta Region ◽  
Borehole Water ◽  
Work Education

This study sought to investigate factors militating against community participation in development projects executed under the Micro Projects Programme and how to reduce such factors to the barest minimum in the Niger Delta region of Nigeria. A cross-sectional survey design was adopted for the study. A questionnaire, an in-depth interview (IDI) guide and a focus group discussion (FGD) guide were used for data collection. Borehole water, generator-house, health centres, staff quarters and markets were the projects executed. Inadequate devolution of power to the grassroots, among others, was the major problem that hindered involvement of community members in the development process of the Micro Projects Programme in the study areas. To enhance active participation of beneficiaries in the development process of the programme, suggestions are proffered.

Seismic stratigraphy and attribute analysis of an offshore field, Niger Delta, Nigeria

2014 ◽  
Vol 8 (9) ◽  
pp. 7537-7549 ◽  
Author(s):  
Eniolayimika Jegede ◽  
Bankole Dayo Ako ◽  
Peter Adetokunbo ◽  
Paul Edigbue ◽  
Sunday James Abe
Keyword(s):  
Niger Delta ◽  
Seismic Stratigraphy ◽  
Attribute Analysis ◽  
Offshore Field

Time-Lapse Seismic for Reservoir Management: Case Studies From Offshore Niger Delta, Nigeria

2016 ◽  
Vol 19 (03) ◽  
pp. 391-402
Author(s):  
Sunday Amoyedo ◽  
Emmanuel Ekut ◽  
Rasaki Salami ◽  
Liliana Goncalves-Ferreira ◽  
Pascal Desegaulx
Keyword(s):  
Case Studies ◽  
Niger Delta ◽  
Reservoir Management ◽  
Time Lapse ◽  
Seismic Survey ◽  
Elastic Model ◽  
Field Development ◽  
4D Seismic ◽  
The Impact

Summary This paper presents case studies focused on the interpretation and integration of seismic reservoir monitoring from several fields in conventional offshore and deepwater Niger Delta. The fields are characterized by different geological settings and development-maturity stages. We show different applications varying from qualitative to quantitative use of time-lapse (4D) seismic information. In the first case study, which is in shallow water, the field has specific reservoir-development challenges, simple geology, and is in phased development. On this field, 4D seismic, which was acquired several years ago, is characterized by poor seismic repeatability. Nevertheless, we show that because of improvements from seismic reprocessing, 4D seismic makes qualitative contributions to the ongoing field development. In the second case study, the field is characterized by complex geological settings. The 4D seismic is affected by overburden with strong lateral variations in velocity and steeply dipping structure (up to 40°). Prestack-depth-imaging (PSDM) 4D seismic is used in a more-qualitative manner to monitor gas injection, validate the geologic/reservoir models, optimize infill injector placement, and consequently, enhance field-development economics. The third case study presents a deep offshore field characterized by a complex depositional system for some reservoirs. In this example, good 4D-seismic repeatability (sum of source- and receiver-placement differences between surveys, dS+dR) is achieved, leading to an increased quantitative use of 4D monitoring for the assessment of sand/sand communication, mapping of oil/water (OWC) front, pressure evolution, and dynamic calibration of petro-elastic model (PEM), and also as a seismic-based production-logging tool. In addition, 4D seismic is used to update seismic interpretation, provide a better understanding of internal architecture of the reservoirs units, and, thereby, yield a more-robust reservoir model. The 4D seismic in this field is a key tool for field-development optimization and reservoir management. The last case study illustrates the need for seismic-feasibility studies to detect 4D responses related to production. In addition to assessing the impact of the field environment on the 4D- seismic signal, these studies also help in choosing the optimum seismic-survey type, design, and acquisition parameters. These studies would possibly lead to the adoption of new technologies such as broad-band streamer or nodes acquisition in the near future.

Offshore Field Development

2019 ◽  
pp. 207-212
Author(s):  
Shashi Shekhar Prasad Singh ◽  
Jatin R. Agarwal ◽  
Nag Mani
Keyword(s):  
Field Development ◽  
Offshore Field

The Remaining Oil Distribution and Main Controlling Factor Analysis of Inefficient Reserves in Complex Fault Block

2014 ◽  
Vol 915-916 ◽  
pp. 1128-1131
Author(s):  
Yu Sheng Ding ◽  
Shuang Yan Chen ◽  
Jun Xie ◽  
Ju Biao Zhou ◽  
Li Yao Li
Keyword(s):  
Development Process ◽  
Oil Field ◽  
Water Flooding ◽  
Field Development ◽  
Fault Block ◽  
Oil Distribution ◽  
Complex Fault ◽  
Distribution Rule ◽  
Remaining Oil ◽  
Remaining Oil Distribution

Inefficient reserves in fault block belongs to low permeability thin interbed, thus water flooding development process has exposed many contradictions which are serious heterogeneity, large difference of suction of interlayer. Entering the water injection development, the injected water which rapidly advance along the high permeability channel causes water channeling and water flooding, which intenses development contradictions between layers. The reservoir numerical simulation technology on computer can reappear the movement of water and gas in the underground reservoir development process and describes the underground remaining oil distribution of inefficient reserves in complex fault block, which summarizes the remaining oil distribution rule of the water flooding development for complex fault block of inefficient reserves and provides basis for the establishment of oil field development adjustment scheme.

Effect of Mixing Quality on NOx Emissions in Reheat Combustion of GT24 and GT26 Engines

2011 ◽  
Author(s):  
K. Michael Du¨sing ◽  
Andrea Ciani ◽  
Adnan Eroglu
Keyword(s):  
High Pressure ◽  
Development Process ◽  
Flow Characteristic ◽  
Water Channel ◽  
Cost Effective ◽  
Nox Emissions ◽  
Combustion System ◽  
Low Pressure Turbine ◽  
Effective Development ◽  
System 1

Alstoms GT24 and GT26 engines feature a unique sequential combustion system [1, 2]. This system consists of a premixed combustor (called EV), which is followed by a high pressure turbine, a reheat combustor (called SEV) and a low pressure turbine (Figure 1). Recently improvements in NOx performance of the SEV have been demonstrated. Starting with relatively simple methods numerous design variants have been tested and down selected. Further down-selection has been done with methods of increased complexity. Overall a fast and cost effective development process has been assured. During the development process the variation coefficient and unmixedness measured and calculated for mixing only systems (CFD and water channel) has proven to be a reliable indicators for low NOx emissions for the real combustion system on atmospheric and high pressure test rigs. To demonstrate this a comparison of both quantities against NOx emissions is shown. The paper focuses on the NOx results achieved during this development and its relation to mixing quantities. Using this relation, together with a detailed understanding of the flow characteristic in the SEV burner, reductions in NOx emissions for GT24 and GT26 SEV burner and lance hardware can be reached using relatively simple methods.

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