Method and device for constructing horizontal well trajectory

A horizontal well and trajectory technology, which is applied in earthwork drilling, wellbore/well components, measurement, etc., can solve the problems of difficulty in tapping the potential of vertical wells and poor economic benefits of horizontal wells along the river

Active Publication Date: 2020-05-12
DAQING OILFIELD CO LTD +1
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  • Description
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Problems solved by technology

[0003] In view of this, the present invention provides a method and device for constructing horizontal well trajectories, so as to solve the problem of inefficient and ineffective circulation in thick oil layers with prominent plane and intralayer contradictions, the difficulty of tapping the potential of vertical wells, and the economic benefits of conventional horizontal wells along the river. bad question

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  • Method and device for constructing horizontal well trajectory
  • Method and device for constructing horizontal well trajectory

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Embodiment Construction

[0042] The present invention will be described below based on examples, but it should be noted that the present invention is not limited to these examples. In the following detailed description of the invention, some specific details are set forth in detail. However, the present invention can be fully understood by those skilled in the art about the parts that are not described in detail.

[0043] In addition, those of ordinary skill in the art should understand that the provided drawings are only for illustrating the objects, features and advantages of the present invention, and the drawings are not actually drawn to scale.

[0044] At the same time, unless the context clearly requires, the words "include", "include" and other similar words in the entire specification and claims should be interpreted as an inclusive meaning rather than an exclusive or exhaustive meaning; that is, "include but not limited to the meaning of ".

[0045] The invention provides a method and a de...

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Abstract

The invention discloses a method and device for constructing a horizontal well trajectory, and relates to the field of oil reservoir engineering. The method for constructing the horizontal well trajectory comprises the steps that a deposition phase band diagram, reservoir lithology and physical property modeling results and a three-dimensional residual oil distribution result are obtained; by using the deposition phase band diagram, the reservoir lithology and physical property modeling results and the three-dimensional residual oil distribution results, the horizontal well trajectory is builtin a transverse-cut river way mode based on a preset rule, wherein a transverse-cut river way is in the direction of a vertical river way and penetrates through an oil reservoir between interlayers.The method and device solve the problems that for a thick reservoir with conspicuous plane and interlayer conflicts, the low-efficiency and inefficient circulation phenomenon is prominent, vertical well digging difficulty is large, and the economic benefit of a conventional horizontal well along the river way is poor.

Description

technical field [0001] The invention relates to the field of reservoir engineering, in particular to a method and device for constructing a horizontal well trajectory. Background technique [0002] Horizontal wells can increase the exposure length of reservoirs and increase the drilling rate, and have irreplaceable advantages in the development of heavy oil, low permeability, marginal, and thin interbedded reservoirs. Horizontal wells at home and abroad are widely used in various reservoirs Examples of success. After long-term practice, for unconsolidated sandstone reservoirs represented by Daqing Sartu Oilfield, horizontal wells were often used on the top of thick oil layers in the past, and the trajectory was designed by following the channel. It is short and there is little room for adjustment in later measures, and the economic benefits are poor, so it is difficult to promote in a large area. Contents of the invention [0003] In view of this, the present invention p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B49/00E21B47/00
CPCE21B49/00E21B47/00Y02A10/40
Inventor 姜振海白军辉付青春陈奋李文龙王大成张雨崔新凯
Owner DAQING OILFIELD CO LTD
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