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The Method of Optimizing Radial Perforation Trajectory

A trajectory and well trajectory technology, applied in the field of optimizing radial perforation trajectory, can solve the problems of inability to effectively monitor radial perforation trajectory, penetrate water layer, fail to achieve production stimulation, etc.

Active Publication Date: 2020-10-23
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

[0004] However, in the process of field implementation, the injection of the target layer and the phenomenon of shooting through the water layer occurred, resulting in the oil well being put into production with full water, and the goal of increasing production was not achieved.
Since the radial perforation trajectory cannot be effectively monitored at present, it is particularly important to find a method to optimize the design of the perforation trajectory

Method used

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  • The Method of Optimizing Radial Perforation Trajectory
  • The Method of Optimizing Radial Perforation Trajectory
  • The Method of Optimizing Radial Perforation Trajectory

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Embodiment Construction

[0031] 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.

[0032] like figure 1 as shown, figure 1 It is a flow chart of the method for optimizing the radial perforation trajectory of the present invention.

[0033] In step 101, an infinite stratigraphic model is established.

[0034] Establish a three-dimensional model of infinite strata, X, Y, Z directions, where the X direction is the direction of the stratum strike, the Z direction is the vertical direction of the horizontal plane, and the Y direction is the vertical direction of the horizontal plane and X.

[0035] In step 102, a reservoir model is built in the formation model.

[0036] The reservoir is simplified, and the reservoir structure changes are considered to be consistent, the reservoir thickness change is ignored, and the reservoir model is ...

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Abstract

The invention provides a novel method for optimizing radial perforation trajectories. The novel method for optimizing radial perforation trajectories comprises the following steps of: 1, establishingan infinite large stratum layer model; 2, establishing a reservoir model in the stratum model; 3, establishing a well trajectory model in the reservoir model; 4, establishing a radial perforation trajectory model on the basis of a well trajectory; and 5, optimizing a radial perforation orientation and a radial perforation length according to a spatial mathematical model. The novel method for optimizing radial perforation trajectories is capable of ensuring that radial trajectories are in reservoirs all the time, so that water-bearing stratums are avoided, inter-layer interferences are prevented, radial perforation development effect is improved, drainage area is increased and the aim of production increase is achieved.

Description

technical field [0001] The invention relates to the technical field of oil field development, in particular to a method for optimizing radial perforation trajectory. Background technique [0002] Radial perforation technology is an oil and gas field stimulation and well completion technology, which mainly provides a cost-effective production method for thin reservoirs, low permeability and marginal reservoirs; especially suitable for single reservoirs, low permeability and low productivity Development of oil reservoirs. [0003] With this technology it is possible to radially drill holes with a diameter of about 50 mm and a length of 100 meters. And it can be designed as multi-directional and multi-branch radial holes according to the formation conditions. It can preliminarily control the trend and can be used as a means of well completion. [0004] However, in the process of field implementation, the injection of the target layer and the phenomenon of shooting through th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20
CPCG06F30/20Y02A10/40
Inventor 焦红岩吴罕王丰文刘文强金亮宇武照龙陈晓媛邢迎迎秦健飞
Owner CHINA PETROLEUM & CHEM CORP
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