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Interwell connectivity analysis method and device based on cellular automaton deduction

A cellular automata and inter-well connectivity technology, applied in the field of well connectivity analysis based on cellular automata deduction, can solve problems such as complex parameter relationships and influencing factors, improve timeliness, ensure accuracy, The effect of reducing complexity

Active Publication Date: 2021-08-13
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

This is mainly because the deduction process of cellular automata only focuses on local rules and states, that is, the state of each cellular node at the next moment is only determined by the state of the cellular node itself, the state of neighboring nodes, and the deduction rules. From local to global, the complex evolution of the entire reservoir system can be realized through simple local rules, while other traditional methods start with the overall change of the system, which needs to consider complex parameter relationships and influencing factors

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  • Interwell connectivity analysis method and device based on cellular automaton deduction
  • Interwell connectivity analysis method and device based on cellular automaton deduction
  • Interwell connectivity analysis method and device based on cellular automaton deduction

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Embodiment 1

[0041] The basis of this embodiment is based on the acquired numerical simulation grid data of 79*96 layers and a total of 111 layers in the three stages of depletion exploitation, water injection development, and polymer injection development in a certain block of ** oilfield. , to observe the change trend of oil saturation to analyze the connectivity between wells and provide guidance for tapping the remaining oil potential. However, numerical simulation requires a lot of time and computing resources for calculation and derivation, and the models it establishes are often very complicated. In order to deduce the change trend of oil saturation and other attributes more concisely and efficiently while ensuring a certain accuracy, the Cellular automata, a spatio-temporal dynamic simulation model based on microscopic individual interactions, deduced the connectivity between wells in this block. Set up the corresponding cellular automata model and deduction rules according to the ...

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Abstract

The invention provides an interwell connectivity analysis method based on cellular automaton deduction, according to the interwell connectivity analysis method based on cellular automaton deduction, a cellular automaton model is set according to the interwell connectivity problem, and different deduction rules and deduction step lengths are respectively set according to different production periods. For well logging data, logging data, production data and digital-analog data (111 layers of grid spaces in total of 79*96 in each layer), after data preprocessing, a cellular automaton model is initialized, deduction is carried out according to a preset deduction rule, and the deduction result of each step can be displayed in real time so that a user can analyze the interwell connectivity problem.

Description

technical field [0001] The present invention relates to a method for analyzing connectivity between wells, in particular to a method and device for analyzing connectivity between wells based on cellular automata deduction Background technique [0002] Complex fault-block oilfields have entered the middle and late stages of high water cut and high recovery after years of water injection development. The reservoir fluid distribution is more complex, and there are common problems such as low water flooding efficiency and high water cut in oil wells, which will seriously affect the recovery and development of mature oilfields. benefit. The connectivity between oil and water wells can directly reflect the distribution of oil and water. It is one of the important contents of oilfield dynamic analysis and evaluation, and it is also an important factor affecting the potential of remaining oil. It has an important guiding role in improving oil recovery. There are mainly two types of...

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Application Information

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IPC IPC(8): G06F30/27G06N20/00G06F111/04G06F119/14
CPCG06F30/27G06N20/00G06F2111/04G06F2119/14Y02A10/40
Inventor 刘昕白雨昊宫法明吴春雷牛庆威张如玉
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)