Digital rock mass establishment and application method for well drilling

A digital and rock mass technology, applied in the field of oil drilling, can solve problems such as the construction method of digital rock mass engineering geological data volume, etc., and achieve the effect of improving drilling efficiency and reducing construction risks

Inactive Publication Date: 2017-01-04
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, some researchers have proposed some calculation methods for drilling engineering geological paramet

Method used

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  • Digital rock mass establishment and application method for well drilling
  • Digital rock mass establishment and application method for well drilling
  • Digital rock mass establishment and application method for well drilling

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Embodiment 1

[0028] figure 1 It is a schematic flow chart of the construction method of the digital rock mass used for drilling in the embodiment of the present invention, and the following refers to figure 1 Each step of the digital rock mass construction method for drilling in this embodiment will be described. The so-called "digital rock mass" means "spatial data volume describing various properties of rock mass" (there is a term "engineering rock mass" in the industry, which refers to physical rock mass).

[0029] Step S110, establishing a stratum framework model (also known as a rock mass framework model) V in the set area f .

[0030] It should be noted that the stratigraphic framework model is a superimposed layer model established by coordinate data, layered data and fault data. That is to say, connect the same layer group of each well according to isochronous comparison to form a layer model, and then use the fault data to combine the fault and layer model to establish a reserv...

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Abstract

The invention discloses a digital rock mass establishment and application method for well drilling. The establishment method comprises the steps of establishing a stratigraphic framework model of a set region; obtaining well drilling engineering geological attribute values of drilled tracks; calculating a variogram function of each attribute distributed in each layer; traversing each grid for each attribute in each layer, and endowing the attribute to each vertex of the grid if the attribute exists in the grid; calculating to obtain the attribute value by utilization of the variogram function if each vertex of the grid is fully or partially empty, and endowing the attribute value to the vertex of the empty value; and storing all vertex data obtained in each layer to obtain a digital rock mass. In an well drilling design or actual drilling process of a new well, if the geological parameters need to be employed, each vertex parameter of the grid where a coordinate is can be obtained through the coordinate of each point on each well track, further each engineering parameter of the coordinate is calculated, and finally all engineering parameters of all well tracks can be obtained.

Description

technical field [0001] The method belongs to the technical field of petroleum drilling, and in particular relates to a method for constructing and applying a digital rock body used for drilling. Background technique [0002] In the process of petroleum exploration and development, we must study the underground geological conditions in order to be targeted, and adopt reasonable drilling and mining methods to improve the success rate of exploration and oil and gas recovery. [0003] Over the years, for exploration and development, various oilfields have spent huge sums of money to establish seismic data volumes and reservoir description data volumes of reservoirs, etc., which have played a key role in oilfield exploration and development. However, in the field of drilling engineering, it is also necessary to integrate various geological factors that must be considered in drilling with the block as a unit, so as to optimize the drilling plan, reduce construction risks and impro...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 曾义金杨传书李昌盛肖莉孙旭徐术国
Owner CHINA PETROLEUM & CHEM CORP
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