Method, device and equipment for determining position of perforation hole of oil and gas well and storage medium
A determination method and device determination technology, applied in the field of hydraulic fracturing, can solve the problems of limited data types, inability to determine the best position of perforation, inability to calculate perforation initiation pressure, etc., to achieve low construction cost and engineering risk, data Fewer types, high achievable effects
Pending Publication Date: 2022-03-01
PETROCHINA CO LTD
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[0004] In practical applications, the types of data that can be collected are limited, and it may not be possible to calculate the required fracture initiation pressure at each position of the perforation, and at this time it is impossible to determine the best position for the perforation
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[0101] In order to make the purpose, technical solution and advantages of the present disclosure clearer, the implementation manners of the present disclosure will be further described in detail below in conjunction with the accompanying drawings.
[0102]In the process of oil well production or gas well production, the perforation operation is generally carried out first to form multiple holes on the casing wall of the wellbore; then hydraulic fracturing is carried out through each hole, and the oil and gas layers are formed into cracks by hydraulic action, thereby having It is beneficial to the exploitation of oil or natural gas in oil and gas layers, and increases the output of oil or gas wells. figure 1 Schematic diagram of perforating operations for oil and gas reservoirs provided by the embodiments of the present disclosure. see figure 1 , the perforating charges 20 are spirally arranged on the charge frame 10 of the perforating gun. figure 2 A schematic diagram after...
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The invention provides a method, device and equipment for determining the position of a perforation hole of an oil and gas well and a storage medium, and belongs to the field of hydraulic fracturing. The method comprises the steps that a calculation model of the oil and gas well crack initiation pressure is obtained, the calculation model represents the relation between various influence factors of oil and gas well crack initiation and the oil and gas well crack initiation pressure, and the various influence factors comprise main influence factors and non-main influence factors; the influence of the numerical value change of the main influence factor on the crack initiation pressure of the oil-gas well is greater than that of the numerical value change of the non-main influence factor on the crack initiation pressure of the oil-gas well; acquiring numerical values of the main influence factors at different positions of the oil-gas well; the numerical values of the main influence factors at all the positions of the oil and gas well and the numerical values of the non-main influence factors are substituted into the calculation model, the crack initiation pressure of all the positions of the oil and gas well is obtained, and the numerical values of the non-main influence factors are constants; and the position corresponding to the minimum value of the crack initiation pressure is determined as the perforation hole position of the oil and gas well. The perforation position can be determined.
Description
technical field [0001] The present disclosure relates to the field of hydraulic fracturing, in particular to a method, device, equipment and storage medium for determining perforation positions of oil and gas wells. Background technique [0002] Fracturing is a method of using hydraulic action to form fractures in oil and gas layers during the process of oil well production or gas well production. Before fracturing, perforating operations are required, that is, perforating charges are arranged in a spiral shape on the inner charge frame of the perforating gun. After the perforating charges are detonated, multiple holes arranged in a spiral shape are formed on the casing wall of the wellbore. During fracturing, the injected liquid forms cracks on the rock through the perforation. The cracking pressure is related to the tensile strength of the rock at the acting position, and the acting position is related to the position of the perforation hole. Therefore, optimizing the posi...
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IPC IPC(8): E21B49/00E21B43/26E21B43/119G06F30/20
CPCE21B49/00E21B43/26E21B43/119G06F30/20
Inventor 周长林曾嵘李力张华礼陈伟华曾冀刘飞胡秋筠彭钧亮杨欢
Owner PETROCHINA CO LTD
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