Three-dimensional horizontal well track optimization design method based on shortest drilling time
A technology with optimized design and the shortest time, applied in design optimization/simulation, geometric CAD and other directions, can solve problems such as shortening drilling cycle, and achieve the effect of shortening drilling cycle, reducing construction difficulty and risk, and saving drilling cost
Inactive Publication Date: 2020-04-21
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Therefore, the commonly used optimization method aiming at the shortest orbit cannot directly and effectively shorten the drilling cycle and save drilling costs
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[0025] In order to make the purpose, technical solutions and advantages of the present invention clearer, the implementation of the present invention will be further described in detail below in conjunction with the accompanying drawings:
[0026] A three-dimensional horizontal well trajectory optimization design method based on the shortest drilling time, comprising the following steps:
[0027] Step 1: Collect well history data of wells drilled in the same block, and perform ROP statistics according to the well history data of wells drilled in the same block;
[0028] Specifically, according to the history data of wells drilled in the same block, the statistics of the ROP were carried out under the four conditions of the stratum penetrated, the size of the drill bit, the type of the drill bit and the drilling method, and the average value of the ROP under the corresponding conditions was obtained. The formations penetrated are classified according to the strata groups that t...
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The invention relates to a three-dimensional horizontal well track optimization design method based on shortest drilling time, and belongs to the technical field of oil and gas drilling and production. The method comprises the following steps of: firstly, performing mechanical drilling speed statistics according to history data of drilled wells in the same block; then establishing a three-dimensional seven-section type track design model of firstly twisting the orientation to align the orientation of the target point and then inclining the middle target; and finally, establishing a designed track drilling time prediction method, and optimizing a series of designed tracks with the shortest drilling time as the target. In a three-dimensional five-section type borehole track, an inclined plane arc well section capable of increasing the inclination and twisting the direction in a conventional three-dimensional five-section type borehole track is divided into a stable inclination and twisting direction well section and an inclination increasing well section on a vertical plane to be designed, the problem that the drilling speed is low when twisting direction operation is conducted in large well deviation can be effectively solved, the problem that target hitting is difficult when inclination increasing and twisting direction operation are conducted at the same time can be solved, the construction difficulty and risk are reduced, track optimization is conducted with the drilling time as the target, the drilling period can be effectively shortened, and the drilling cost is saved.
Description
[0001] This application claims the priority of the Chinese patent application submitted to the China Patent Office on April 29, 2019, with the application number 201910353850.2, and the title of the invention is "A Method for Optimal Design of Three-dimensional Horizontal Well Track Based on the Shortest Drilling Time", all of which The contents are incorporated by reference in this application. technical field [0002] The invention relates to the technical field of oil and gas drilling, in particular to a three-dimensional horizontal well trajectory optimization design method based on the shortest drilling time. Background technique [0003] The Fuling shale gas field is the first large-scale shale gas field in China, with huge development potential. The gas field is located in a mountainous-hilly landform. In order to minimize the number of well sites, reduce the cost of surface engineering, and improve the overall development efficiency of shale gas, the "well factory" t...
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IPC IPC(8): G06F30/20G06F30/13
CPCG06F30/13G06F30/20
Inventor 黄根炉李伟于凡倪红坚苏宇江武
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)