A target evaluation method and system in horizontal well landing

An evaluation method and evaluation system technology, applied in the field of horizontal well landing target evaluation, can solve the problems of inaccurate evaluation results and affecting drilling efficiency, etc., and achieve the effect of improving the quality of wellbore trajectory and comprehensive evaluation results

Active Publication Date: 2019-06-18
PETROLEUM ENG TECH RES INST CHINA PETROLEUM & CHEM CORP NORTH CHINA OIL & GAS CO +1
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Problems solved by technology

[0003] The purpose of the present invention is to provide a horizontal well landing target evaluation method to solve the problem that the impact of well deviation and azimuth angle is not considered in the current horizontal well landing target evaluation, which leads to inaccurate evaluation results and affects drilling efficiency; at the same time, the present invention The invention also provides a horizontal well landing target evaluation system

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  • A target evaluation method and system in horizontal well landing
  • A target evaluation method and system in horizontal well landing
  • A target evaluation method and system in horizontal well landing

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Embodiment Construction

[0035] The specific embodiments of the present invention will be further described below in conjunction with the drawings.

[0036] The invention fully considers the hitting accuracy of the A target point, and at the same time introduces the coincidence rate of the well deviation azimuth angle, and more comprehensively evaluates the hitting target of the horizontal well landing. According to the wellhead coordinates, target coordinates and corresponding vertical depths given by the drilling geological design, the present invention first makes the well bore trajectory, thereby determining the design vertical depth, design vertical distance, and design horizontal distance of the landing point (target point A) And the azimuth angle of the well deviation; then after drilling to the target point A, the actual drilling vertical depth, actual drilling length, actual drilling transverse distance and actual drilling deviation azimuth are calculated through inclinometer; finally the target ...

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Abstract

The invention relates to a target evaluation method and system in horizontal well landing, and belongs to the technical field of petroleum and gas drilling. According to the invention, the target precision in the A target spot is considered; the target in horizontal well landing is evaluated by integrating the target precision in the A target spot and the well deviation azimuth coincidence rate, so that the evaluation result of the target in horizontal well landing is more comprehensive and scientific, the evaluation of the target precision in landing by petroleum companies and directional construction units is facilitated, and the borehole trajectory quality is improved.

Description

Technical field [0001] The invention relates to a target evaluation method and system for horizontal well landing, and belongs to the technical field of petroleum and natural gas drilling. Background technique [0002] In the field of oil and gas technology, in order to increase the production rate of reserves, increase single well production, reduce engineering costs, and improve efficiency, the proportion of horizontal wells is increasing. For example, the North China Oil and Gas Branch in Daniudi gas field passed 1 billion cubic meters of natural gas production capacity has been built for horizontal wells, and good results have been achieved. In horizontal well drilling, accurate landing of target A is very important, especially for heterogeneous reservoirs. However, there are some shortcomings in the accuracy and evaluation of target A for target A. The deviation of target A is ignored. In drilling practice, if there is a large deviation between the actual drilling azimuth a...

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): G06Q10/06E21B7/04
Inventor李建山王翔陈晓华闫吉曾
OwnerPETROLEUM ENG TECH RES INST CHINA PETROLEUM & CHEM CORP NORTH CHINA OIL & GAS CO