Single well dynamic reserve calculation method under multi-well unified metering
A technology of dynamic reserves and calculation methods, applied in calculation, wellbore/well components, computer-aided design, etc., to achieve the effect of convenient calculation methods
Pending Publication Date: 2021-12-10
北京中地金石科技有限公司
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Problems solved by technology
[0005] The purpose of the present invention is to solve the technical problem that the above-mentioned existing technology cannot solve the technical problem of accurately calculating the dynamic reserves of a single well without wellhead production data under the unified measurement of multiple wells, and to provide a single well dynamic reserve under the unified measurement of multiple wells. Reserve Calculation Method
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[0072] The present invention will be described in further detail below in conjunction with the examples, but the embodiments of the present invention are not limited thereto.
[0073] figure 1 The flow chart of a method for calculating the dynamic reserves of a single well under the unified metering of multiple wells according to the present invention is shown.
[0074] Such as figure 2 as shown, figure 2 Shown is a schematic diagram of a group of total metering system lines with 2 wells on site.
[0075] Well 1 and Well 2 belong to the same metering well group, in the metering system of the two wells, P 1 ,P 2 , P are the wellhead pressure of well 1, the wellhead pressure of well 2, and the pressure at the delivery outlet; L 1 , L 2 length of pipeline for the two wells; q g ,q w ,q o is the total gas production, total water production, and total oil production; q g1 ,q w1 ,q o1 ,q g2 ,q w2 ,q o2 are the gas production, water production and oil production of W...
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The invention provides a single well dynamic reserve calculation method under multi-well unified metering, which comprises the following steps of for a multi-well metering system, counting data such as total flow in a gas gathering station in the metering system, taking the total flow at the multi-well unified metering position as an upper limit, assuming different flow combinations in each single well transportation pipeline, and performing pipe flow calculation by using the different flow combinations to obtain a pressure difference value of two ends of each single well transportation pipeline under the different flow combinations, finding out a flow combination meeting the actual pressure difference condition of the two ends in each transportation pipeline, and dividing the total metered total flow to each single well, converting the flowing bottomhole pressure of each single well, and substituting the yield, the flowing bottomhole pressure, the gas reservoir reserve parameters and the wellbore data of each single well into decline fitting software, and calculating the dynamic reserve of each single well by using a modern yield decline method. The method overcomes the difficulty that the prior art cannot be applied to no single well yield data and the production system is limited, can accurately calculate the single well dynamic reserves under multi-well unified metering, and is suitable for mine field application.
Description
technical field [0001] The invention relates to the technical field of gas reservoir development, and more specifically, to a method for calculating dynamic reserves of a single well under unified metering of multiple wells. Background technique [0002] At present, more and more gas fields in my country use the multi-well total metering system instead of the single well metering system. The wellhead production of a single well in the multi-well total metering system is unknown. After distance transportation, arrive at the gas gathering station, and measure the total output and outlet pressure at the transportation outlet. Without wellhead production data, it is impossible to calculate bottomhole flow pressure, which in turn affects the calculation and evaluation of single well dynamic reserves, causing certain difficulties for further understanding and development of blocks. [0003] According to the different production characteristics of gas wells, many scholars have carr...
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IPC IPC(8): G06F30/28G06Q50/02E21B49/00G06F111/10G06F113/14
CPCG06F30/28E21B49/00G06Q50/02G06F2111/10G06F2113/14Y02A10/40
Inventor 罗怡雯张佳琪
Owner 北京中地金石科技有限公司