A method for quickly judging horizontal wells with economic production based on well logging data
A technology for well logging data and horizontal wells, applied in data processing applications, instruments, calculations, etc., can solve problems such as no literature reports, no methods, etc., and achieve good application effects, high accuracy, and strong operability
Active Publication Date: 2020-07-24
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology
For such a single horizontal well with a single logging series, there is no effective method for how to evaluate it with the only logging curves, and there are basically no reports in the literature.
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[0028] Preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
[0029]This disclosure proposes a method for quickly judging that a horizontal well has economic production based on well logging data, including the following steps: obtaining the peak value of the logging curve in the horizontal section, analyzing the peak characteristics of the GR frequency histograms of high-production wells and low-production wells; reading The maximum value of total hydrocarbon QTmax, combined with the maximum value of ...
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The invention provides a method for rapidly discriminating the economic yield of a horizontal well based on logging data. The method comprises the following steps that the peak value of a horizontal segment logging curve is acquired, and the peak features of the GR frequency histogram of a high-yield well and a low-yield well are analyzed; the total hydrocarbon maximum value QTmax is read, and theidentification plate of the high-yield well and the low-yield well is drawn through combination of the total hydrocarbon maximum value QTmax and the frequency Fre; and a cross-plot is manufactured through combination of the GR peak features of the high-yield well and the low-yield well and the total hydrocarbon maximum value QTmax identification plate of the high-yield well and the low-yield wellso that the two-parameter plate for judging whether the horizontal well has the economic yield can be formed. According to the method, the problem of judging the volume of the test yield of the horizontal well under the background that only gamma while drilling exists in the horizontal well logging series for reducing the cost and the risk can be solved, and the method can also act as another method for judging the economic yield of the horizontal well in the research area having complete horizontal well logging data so as to provide evidence for evaluation of the horizontal well.
Description
technical field [0001] The invention relates to the technical field of oil and gas reservoir development, in particular to a method for quickly judging that a horizontal well has economic output based on well logging data during the development stage of a tight sandstone reservoir. Background technique [0002] With the rapid development of the petroleum industry, the oil and gas reservoirs for exploration and development are becoming more and more complex. Since the birth of horizontal well technology, it has been rapidly popularized in the oil drilling industry. Horizontal wells can penetrate natural fractures in a large area, increase the oil drainage area, increase the oil control radius of a single well, reduce bottom water coning and gas coning, etc., and maximize the development of reservoirs. Horizontal well drilling technology, as one of the effective means to increase single well production and recovery, has been more and more widely used all over the world. Hori...
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IPC IPC(8): G06Q50/02
Inventor 李浩魏修平冯琼王丹丹王秀芝
Owner CHINA PETROLEUM & CHEM CORP