An Exploratory Study on Optimum Layout of the Cluster Manifold

There are four typical layout types for the subsea production system. These include single well tie back, the daisy chain, the template manifold and the cluster manifold. In the early development phase, an appropriate layout type needs to be selected. The layout design of the subsea production system is based on the data of oil and gas fields. Due to many advantages, such as less initial investment, being installed in advance, flexibility for development schedule and so on, the cluster manifold is becoming more popular and has been applied extensively in the layout of deepwater subsea production systems. In this layout type, the number and locations of cluster manifolds, and the connection types between subsea production facilities have a direct effect on the safety, flexibility and cost of the target deepwater oil and gas fields. Hence, how to design the optimal layout of the cluster manifold is of key importance. This paper will focus on the cluster manifold layout by the math means programmed using C++. For any given subsea well and the floating production system, the basic layout of the cluster manifold with the lowest cost can be obtained based on the assumptions, including the number, locations and cost of the jumpers, PLETS and flowlines. This mathematical method can reduce subjective bias from the engineers and provide a more scientific reference for obtaining the optimal cluster manifold layout.

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Selection of the optimal subsea production system using original software

E3S Web of Conferences ◽

10.1051/e3sconf/202126606005 ◽

2021 ◽

Vol 266 ◽

pp. 06005

Author(s):

V.A. Ivanova ◽

M.Y. Shabalov

Keyword(s):

Production System ◽

Oil And Gas ◽

Planning Process ◽

Transport Infrastructure ◽

Oil And Gas Fields ◽

Software Product ◽

Subsea Production System ◽

Offshore Oil And Gas ◽

Gas Fields ◽

Offshore Oil

Due to the high relevance of the offshore oil and gas fields’ de-velopment, the authorsexaminethe technology of subsea mining, which is gaining popularity in the Russian Federation. The main types of subsea production system constructions were analyzed and a number of factors, which affect the development of offshore oil and gas fields, were proposed. An algorithm for the software product was created which allows after geo-logical exploration and the discovery of industrial oil and gas recourses to optimize the planning process and to save time and material costs for the company at the preliminary stages of planning. The software product algo-rithm based on such factors asdepth and size of the field, duration of ice season of the region, remoteness of the field from the coast, the level of development of transport infrastructure and the complexity of geological structure.

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SUBSEA PRODUCTION FOR WELLS DRILLED FROM JACKUP DRILLING UNITS

The APPEA Journal ◽

10.1071/aj86030 ◽

1987 ◽

Vol 27 (1) ◽

pp. 357

Author(s):

M. Thatcher ◽

D.B. Marietta

Keyword(s):

Oil And Gas ◽

Production Systems ◽

Oil And Gas Fields ◽

Offshore Oil And Gas ◽

The Cost ◽

Gas Fields ◽

Offshore Oil

Subsea production systems have been an accepted method of developing offshore oil and gas fields since the installation of the first subsea trees in the early 1960s offshore California. Generally subsea completions have been done from floating drilling vessels on wells with subsea wellhead equipment. A number of wells have been completed subsea by bottom supported jackup rigs on wells drilled using mudline suspension equipment. The subsea completion equipment and methods utilised to adapt mudline suspension wells for a subsea production tree are described. This method of completion offers important benefits as it allows completion of wildcat or delineation wells, it can be used in areas of small, scattered reservoirs, and it can be used in conjunction with floating production systems. The cost associated with these subsea completions is roughly equivalent to those of standard subsea completions from floating vessels. An overview of a typical completion system is presented and compared.

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Risk Assessment and Reliability Analysis of Subsea Production Systems

Volume 2A: Structures, Safety, and Reliability ◽

10.1115/omae2020-19283 ◽

2020 ◽

Author(s):

Liaqat Ali ◽

Shan Jin ◽

Yong Bai

Keyword(s):

Risk Assessment ◽

Reliability Analysis ◽

Deep Water ◽

Production System ◽

Evaluation Method ◽

Oil And Gas ◽

Production Systems ◽

Risk Identification ◽

Subsea Production System ◽

The Impact

Abstract In past years, offshore oil and gas accidents have often occurred. Environmental hazards have the capability of turning into very difficult to manage in addition with the modern technology limits and lack of a fail-safe operation that can identify, control and terminate the accidents. However, the offshore crude oil also natural gas search and development is expanding to deep-water and moving promptly to the subsea production systems. (SPS). Though, the complicate subsea equipment material besides frequency offshore disasters stimulated the consideration onto the risk analysis of subsea systems. Detection of the impact of deep-water oil and gas reserves in the subsea production system. However, loss of SPSs can contribute to massive industrial failure, severe natural pollution, and indeed serious disasters. Therefore, the reliability analysis and safety of SPS have turned into a dominant consideration. This study addresses on the hazards and risk conditions which must be concentrated in the subsea machinery associated within surface equipments. Furthermore, the risks identification also the risk investigation onto subsea “Xmas tree” system is brought out. An over-all risk avert procedure of subsea “Xmas tree” system is represented, also the reliability evaluation method. Moreover, several recommendations on subsea production maintenance and detection are given in this research. This paper is reviewing the following section, subsea production system, hazards or risk identification, environmental issues, hydrate problems, corrosion problems, safety issues, risk assessment on subsea “Xmas tree”, reliability issues of a subsea system.

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Management of Reserves in Mature Oil and Gas Fields

Journal of Petroleum Technology ◽

10.2118/1220-0039-jpt ◽

2020 ◽

Vol 72 (12) ◽

pp. 39-40

Author(s):

Chris Carpenter

Keyword(s):

Production System ◽

Structural Integrity ◽

Oil And Gas ◽

Cost Management ◽

High Water ◽

System Level ◽

Asia Pacific ◽

Full Potential ◽

Oil And Gas Fields ◽

Gas Fields

This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper SPE 196252, “Management of Reserves in Mature Oil and Gas Fields,” by Douglas Peacock, SPE, and Andrew Duncan, SPE, Gaffney, Cline, and Associates, prepared for the 2019 SPE/IATMI Asia Pacific Oil and Gas Conference and Exhibition, Bali, Indonesia, 29-31 October. The paper has not been peer reviewed. As production of fields declines, revenues will eventually no longer cover costs. As defined by the Petroleum Resources Management System (PRMS), the Reserves class of resources is limited by the earliest truncation of either technical, license, or economic limit. If no technical or license restrictions exist, the economic limit, defined as the time when the maximum cumulative net cash flow occurs for a project, defines the date up to which Reserves may be booked. The complete paper outlines some of the challenges involved in late-life field management and how Reserves assessment may be affected. Extending Field Life Oil and gas fields can have lives much longer than initially envisioned. Fields may be relinquished or proposed for abandonment when the operator’s perspective does not allow the full potential of the field to be exploited. Organizational barriers, regulatory or commercial issues, capital- or manpower-allocation constraints, technology limitations, cost structures, and other factors may exist that, if resolved, can extend the productive life of a field or production area. Several classes of activity can be considered to extend field life while maintaining safe and profitable operations. These include the following: Cost management Incremental or alternative production Operational improvements Fiscal and commercial improvements Cost Management. A detailed understanding of operating costs, and where and why they are incurred in a production system, allows uneconomic elements of the production system to be abandoned, improving the economics of the remaining system. This can take place at the well level (high-water-cut wells) or the satellite-production-system level by consolidating production streams into a single processing facility. The overall objective is to reduce costs by ceasing uneconomic activities. This approach also may require decommissioning activities to be carried out to remove redundant infrastructure (e.g., wellhead platforms) where the continued existence of these facilities would incur costs to maintain a minimum level of structural integrity and safety. The unit costs of essential activities or services can be reduced by contract renegotiation; furthermore, alternative and lower-cost approaches to deliver the same production service may exist.

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