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A thin interbedded oilfield development method

An oilfield development, thin interlayer technology, applied in drilling equipment and methods, production fluids, earthwork drilling, etc., can solve the problems of unsatisfactory development effect, low recovery rate, and many layers, and achieve good oil recovery effect , the effect of improving oil recovery and improving oil recovery efficiency

Active Publication Date: 2022-01-28
CHINA UNIV OF PETROLEUM (BEIJING)
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Problems solved by technology

[0003] For oil fields with thin interbeds, due to the thin single layer, large number of layers, and large vertical span, conventional development methods can be used for effective development, but the development effect is very unsatisfactory and the recovery rate is low

Method used

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  • A thin interbedded oilfield development method
  • A thin interbedded oilfield development method
  • A thin interbedded oilfield development method

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Embodiment Construction

[0026] The technical solution of this patent will be further described in detail below in conjunction with specific embodiments.

[0027] see Figure 1-3 , a thin interbedded oilfield development method, comprising the following steps:

[0028] The first step is to measure and obtain detailed data of the thin interbed layer structure;

[0029] In the second step, according to the thin interlayer data obtained in the first step, a thin interlayer sample having the same mechanical properties as the above thin interlayer is prepared;

[0030] In the third step, a fracturing experiment is carried out on the thin interbed sample obtained in the second step to obtain the expected fracturing crack situation of the thin interbed;

[0031] The fourth step is to design the drilling points according to the fracturing fractures in the third step;

[0032] The fifth step is to carry out drilling according to the drilling points designed in the fourth step;

[0033] The sixth step is to...

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Abstract

The invention discloses a thin interbedded oilfield development method, which includes measuring and obtaining detailed data of the thin interbedded layer structure; and preparing a thin interbedded sample with the same mechanical properties as the thin interbedded layer according to the thin interbedded data Carry out fracturing experiments on the thin interbed samples to obtain the expected fracturing fractures of the thin interbeds; design the drilling points according to the fracturing fractures; carry out drilling according to the designed drilling points; Insert the development pipe; grout the inserted development pipe, and start oilfield exploitation after the grout solidifies. Through the detailed prediction of the fracturing fractures of the thin interbed in advance, the best drilling point is determined, so that the corresponding drilling point can connect a larger amount of oil through the fracture as much as possible. At the same time, through the extension and fixing of the development pipe, it can Extending the pipeline into a deeper layer can collect oil more extensively, improve the oil recovery rate, and obtain better oil recovery effect and oil recovery efficiency.

Description

technical field [0001] The invention relates to the technical field of oil field development, in particular to a thin interbedded oil field development method. Background technique [0002] In shale oil reservoirs, shale oil reservoirs with multi-rhythmic rock mass characteristics are called thin interbeds. With the deepening of oil exploration and development, a large number of thin interbedded reservoirs have gradually become an important factor for increasing oil production. resource. Interbedded refers to the repeated occurrence of two rock layers, indicating repeated and repeated changes in the depositional environment. Thin interbedded reservoirs usually have thick sandstone reservoirs and thinner shale interbeds alternately in the vertical direction, and the reservoirs present the characteristics of alternate development of sand layers and mud layers with different thicknesses in the vertical direction. [0003] Oilfields with thin interbeds, due to their thin singl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/00E21B43/26E21B7/00E21B33/13E21B47/00E21B49/00
CPCE21B43/00E21B43/26E21B7/00E21B33/13E21B47/00E21B49/00
Inventor 章星吴桐刘唱陈刚王欣桐李志勇陈超冯传磊
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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