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3d geological model—a drilling method with real-time linkage of 3d horizontal well trajectory

A geological model and horizontal well technology, applied in directional drilling, drilling equipment, drilling automatic control system, etc., can solve the problems of easy judgment errors, poor information, etc., and achieve simple methods, easy to solve, and strong practicability Effect

Active Publication Date: 2019-09-10
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

This old discrimination method uses relatively poor information and is prone to misjudgment

Method used

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  • 3d geological model—a drilling method with real-time linkage of 3d horizontal well trajectory
  • 3d geological model—a drilling method with real-time linkage of 3d horizontal well trajectory
  • 3d geological model—a drilling method with real-time linkage of 3d horizontal well trajectory

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Embodiment Construction

[0023] In order to make the above and other objects, features and advantages of the present invention more comprehensible, the preferred embodiments are listed below and shown in the accompanying drawings in detail as follows.

[0024] like figure 1 as shown, figure 1 It is a flow chart of the drilling method for real-time linkage of 3D geological model-3D horizontal well trajectory of the present invention.

[0025] Step 101, prepare the real-time data of the well trajectory and the 3D geological model in advance in the mud logging room, and build an information linkage system;

[0026] Step 102, continuously load the real-time well trajectory data into the 3D geological model; update the 3D geological model every 50m in the vertical section of the horizontal well; update the 3D geological model every 10m when drilling within 50m of the top of the oil layer Model.

[0027] Step 103, in the 3D geological model, when the well trajectory is close to the oil layer, always obse...

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Abstract

The invention discloses a well drilling method for 3D geologic model-3D horizontal well track real-time linkage. The drilling method for the 3D geologic model-3D horizontal well track real-time linkage includes the steps of achieving abutting linkage between well track output equipment and a geologic model; inputting real-time well track data into the geologic model; after an oil layer in the model is drilled, correcting the top-bottom depth of an oil layer model, and generating a new geologic model; controlling a horizontal well track to extend along the oil layer model in real time; according to the well logging conditions after well completion, detecting whether or not the well track is satisfactory. The well drilling method for the 3D geologic model-3D horizontal well track real-time linkage is easy to popularize and convenient to operate, and a new practical and effective approach is provided for preventing deviation of the horizontal well track and achieving sufficient information exchange between the models and the well track.

Description

technical field [0001] The invention relates to the technical fields of oil field development and drilling, in particular to a drilling method for real-time linkage of 3D geological models and 3D horizontal well trajectories. Background technique [0002] After 2011, it was stipulated that all development plans must have a 3D geological model. Therefore, real-time 3D geological models have never been used in the drilling sites of horizontal wells and the stuck horizon sites of coring wells. [0003] The trajectories of many drilled horizontal wells are somewhat different from the models, that is, the horizontal wells in the past were basically not ideal well trajectories. Idealized well trajectories and models such as figure 1 However, there are very few horizontal wells that are parallel to the top and bottom of oil layers and have well-controlled well trajectory; [0004] A practical example of poor well trajectory control in history is that the horizontal well trajecto...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B7/04E21B44/00
Inventor 吴兆徽吴光焕牛丽娟刘西雷吴颖昊翟麟秀李珊珊李伟梁金萍陈明铭
Owner CHINA PETROLEUM & CHEM CORP