Drill bit type selection method and device, equipment and storage medium

A drill bit and matrix technology, which is applied in the field of equipment and storage media, bit selection method and its device, achieves the goal of high-quality and fast drilling, has broad prospects for field promotion and application, and has obvious effects

Pending Publication Date: 2019-06-28
CNOOC TIANJIN BRANCH +1
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Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide a drill bit selection method and its devi

Method used

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  • Drill bit type selection method and device, equipment and storage medium
  • Drill bit type selection method and device, equipment and storage medium
  • Drill bit type selection method and device, equipment and storage medium

Examples

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Example Embodiment

[0196] The drill bit selection method described in the embodiment of the present invention is proved by being applied to a field example. Specific examples are as follows:

[0197] The use of drill bits in the deep formations of the four blocks of the East China Sea HG and GZZ were counted, and the final evaluation of the bit selection of the various types of drill bits used in the deep formations of the above blocks was carried out using the evaluation calculation method described in the embodiment of the present invention. In the calculation of the index value, the drill bits are ranked according to the size of the final evaluation index value. Table 4 below shows the top nine drill bit models with the final evaluation index value.

[0198]

[0199]

[0200] Table 4 Final evaluation index values ​​of various types of bit selection in the deep strata of the East China Sea

[0201] It can be seen from the table that in the deep strata of the East China Sea, the three types of drill ...

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Abstract

The invention discloses a drill bit type selection method and a drill bit type selection device, APPARATUS AND STORAGE MEDIUM. The method comprises the following steps: acquiring and counting use parameters of at least one drill bit used in an appointed stratum of a region, and respectively carrying out at least one evaluation operation on all the drill bits to obtain a multi-parameter evaluationindex value matrix and a single-parameter evaluation index value matrix; and performing normalization processing and de-weighting processing respectively, endowing weights, and finally calculating a comprehensive vector of an evaluation index value matrix according to a nonlinear fuzzy optimization theory to obtain a final evaluation index value corresponding to each drill bit. The drill bit modelselection accuracy can be improved, the advantages of various drill bit model selection methods are considered, the optimal fast drilling target is achieved, the optimized drill bit acceleration effect is obvious, the field popularization and application prospects are wide, and the method has the important significance on drilling acceleration and efficiency improvement.

Description

technical field [0001] The invention relates to the technical field of oil and natural gas drilling, in particular to a drill bit selection method and its device, equipment and storage medium. Background technique [0002] In the drilling process, the drill bit is the main tool for breaking rock, and the wellbore is formed by breaking the rock with the drill bit. Whether a wellbore is formed well or not, the length of time it takes is not only related to the characteristics of the drilled formation rock and the performance of the drill bit itself, but also to the degree of matching between the drill bit and the formation. The reasonable selection of the drill bit plays an important role in increasing the drilling speed and reducing the overall cost of drilling. [0003] There are many existing drill bit selection methods. Due to the difference in calculation theory and selected parameters, the results obtained by each drill bit selection method are not the same. Correspondi...

Claims

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Application Information

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IPC IPC(8): G06F17/50G06K9/62
CPCY02P90/30
Inventor 张海山李乾王涛姜韡施览玲纪国栋王宏民
Owner CNOOC TIANJIN BRANCH
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