Shale gas field well group division three-level optimization method
An optimization method and gas field technology, applied in instruments, data processing applications, prediction, etc., can solve problems such as long production time and fast production decay rate, and achieve the effect of reducing construction costs
Active Publication Date: 2016-10-26
SOUTHWEST PETROLEUM UNIV
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Therefore, the above model can only be used for conventional gas fields with long development period and stable production, and is not suitable for optimal division of well groups in shale gas fields with obvious unconventional characteristics such as fast production decay rate, long production increase time, and large-scale rolling development.
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[0020] Specific embodiments: taking a domestic shale gas field as an example, and in conjunction with the accompanying drawings to illustrate the content and realization principle of the present invention:
[0021] The technical solution of the present invention is to adopt hierarchical optimization and integration strategies to transform the problem of optimal division of well groups into a three-level optimization problem: taking the least construction cost of the gas-gathering pipeline network system in each development year of the shale gas field as the objective function, and establishing Gas-gathering station site optimization model; use hierarchical clustering method to divide the optimal gas-gathering station site in each development year into several clusters, and use the cluster center of each cluster as the global optimal gas-gathering station site ; Taking the shortest sum of distances between each global optimal gas gathering station and the well site as the object...
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The invention discloses a shale gas field well group division three-level optimization method. The technical scheme adopts a hierarchical optimization and integration strategy and converts a well group optimization division issue into a three-level optimization issue, and is characterized by, with minimum construction cost of gas-collection pipe network systems in various development years of a shale gas field being an objective function, establishing gas-gathering station site optimization models in different development years; dividing the optimum gas-gathering station site in each development year into a plurality of cluster groups through a hierarchical clustering method, the cluster center of each group serving as a global optimum gas gathering station site; and with the minimum sum of the distance between global optimum gas gathering stations and well fields being an objective function, establishing an optimization model of membership relation between the shale gas field global optimum gas gathering stations and the well fields. With unconventional features of fast production decline of the shale gas wells and continuous new well operation being taken into consideration, the invention provides a new method for determining the well group division scheme, where the construction cost of the gas-collection pipe network of the shale gas filed in a full life circle is minimum, and the method is of great importance in reducing the construction cost of the shale gas ground engineering.
Description
technical field [0001] The invention relates to a method for optimizing the division of well groups in shale gas fields, and belongs to the technical field of layout optimization of gathering and transportation pipeline network systems in shale gas fields. Background technique [0002] As an unconventional natural gas resource with great development value, shale gas accounts for an increasing proportion of the world's total natural gas resources year by year, and has attracted great attention from all countries in the world. However, due to the unconventional characteristics of shale gas wells, such as fast production decline rate, long production time, and large-scale rolling development, the development cost is high and the investment risk is high. Therefore, low-cost strategies must be implemented to achieve profitability. Optimizing the design of the shale gas surface gathering and transportation pipeline network system is one of the important ways to reduce the cost of ...
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IPC IPC(8): G06Q10/04G06Q50/06
CPCG06Q10/04G06Q50/06
Inventor 岑康郑昕姚婷张优贾敏黄金明
Owner SOUTHWEST PETROLEUM UNIV