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Correction method for directional well logging information

A calibration method and logging data technology, which can be used in wellbore/well components, measurement, earth-moving drilling, etc., and can solve problems such as inaccurate calibration

Pending Publication Date: 2021-11-26
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for correcting directional well logging data to solve the problem of inaccurate correction existing in the current correction of directional well logging data

Method used

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  • Correction method for directional well logging information
  • Correction method for directional well logging information
  • Correction method for directional well logging information

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Embodiment Construction

[0022] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0023] According to the actual situation of the oil field, the method for correcting the logging data of the directional well of the present invention considers the two intersecting relationships between the trajectory of the directional well and the stratum, and uses trigonometric functions and differential thinking to correct the depth of the deviated well to the depth of the virtual vertical well, thereby realizing Deviated wells and vertical wells in the whole area can be compared and studied under the same standard, which has important guiding significance for the distribution of sedimentary reservoirs in the exploration area, and it can also be seen from the practical application of the Nanyang sag that the vertical depth correction mode is better than the vertical The superiority of the deep correction mode is more comparable in strati...

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Abstract

The invention relates to a correction method for directional well logging information, and belongs to the technical field of oil-gas exploration and development. According to the method, the influence of the stratigraphic dip angle is fully considered, and the inclined well depth of the logging data is corrected to the virtual vertical well depth through the trigonometric function and the differential thought by utilizing the stratigraphic dip angle and the directional well deviation data according to the intersection position relation of the directional well trajectory and the stratum; therefore, the whole-area inclined shaft and the whole-area vertical shaft can be compared and researched under the same standard, and the method has important guiding significance for the research on the sedimentary reservoir distribution of an exploratory area.

Description

technical field [0001] The invention relates to a method for correcting logging data of directional wells, belonging to the technical field of oil and gas exploration and development. Background technique [0002] In oil and gas exploration in petroleum basins, with the continuous deepening of exploration and development, the early conventional large-scale structural reservoirs have been discovered, and the current exploration targets are often oil layers that are relatively far away from the oil-generating center and have a low oil-bearing height in a single layer. Vertical well drilling is often unable to obtain large-scale oil and gas discoveries, and high-inclination directional drilling technology has emerged as the times require. This technology can drill close to faults according to oil and gas distribution, and drill from shallow to deep. Realize the large-scale discovery and profitable development of oil and gas. The targeted reflection of the lithology and physica...

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Application Information

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IPC IPC(8): E21B47/04E21B47/022E21B47/026
CPCE21B47/04E21B47/022E21B47/026Y02A90/30
Inventor 李黎明朱颜郑凯文郑融李小霞孙克兵肖湘张永华陈雪菲张育衡
Owner CHINA PETROLEUM & CHEM CORP
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