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A Drilling Parameter Optimization Method Based on Plastic Energy Consumption Ratio

A technology of drilling parameters and plasticity, applied in design optimization/simulation, electrical digital data processing, special data processing applications, etc., can solve the problem of inability to obtain optimal drilling parameters, inability to determine cutting depth, and inability to further improve drilling efficiency And other issues

Active Publication Date: 2021-02-09
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology

[0004] In the prior art, mechanical specific energy (MSE) is a commonly used index at this stage to evaluate the rock-breaking efficiency. Its concept is the energy consumed by breaking a unit volume of rock. The critical cutting depth can be obtained by using the mechanical specific energy, but it cannot Determining the optimum depth of cut and therefore not obtaining the optimum drilling parameters to further improve drilling efficiency

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  • A Drilling Parameter Optimization Method Based on Plastic Energy Consumption Ratio
  • A Drilling Parameter Optimization Method Based on Plastic Energy Consumption Ratio
  • A Drilling Parameter Optimization Method Based on Plastic Energy Consumption Ratio

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[0094] In order to make the object, technical scheme and advantages of the present invention more clear, the present invention will be further described below in conjunction with the examples, but the protection scope of the present invention is not limited.

[0095] A method for optimizing drilling parameters based on plastic energy consumption ratio, the method includes the following steps:

[0096] Step 1: According to the mechanical models of plastic crushing and brittle crushing in the rock cutting process of drilling, respectively establish the calculation models of mechanical specific power under the conditions of rock plastic crushing and brittle crushing;

[0097] Step 2: Obtain the final calculation model of mechanical specific work by using the combination of mechanical specific work calculation models under the conditions of rock plastic crushing and brittle crushing;

[0098] Step 3: Establish a plastic energy consumption ratio calculation model based on the final...

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Abstract

The invention discloses a method for optimizing drilling parameters based on plastic energy consumption ratio, which comprises the following steps: Step 1: according to the mechanical models of plastic fracture and brittle fracture in the drilling rock cutting process, respectively establish rock plastic fracture and brittle fracture conditions Next, the calculation model of mechanical specific work; step 2: use the combination of calculation models of mechanical specific work under the conditions of rock plastic fracture and brittle crushing to obtain the final calculation model of mechanical specific work; step 3: establish the calculation model of plastic energy consumption ratio based on the final calculation model of mechanical specific work Step 4: Obtain the parameters in the plastic energy consumption ratio calculation model through cutting tests; Step 5: Solve the plastic energy consumption ratio under different cutting depths from the plastic energy consumption ratio calculation model; Step 6: By comparing the plastic energy consumption ratio under different cutting parameters The plastic energy consumption ratio is used to optimize the optimal cutting parameters; this method can optimize the optimal cutting parameters, and finally achieve the purpose of improving drilling efficiency and reducing drilling costs.

Description

technical field [0001] The invention relates to the technical field of oil and gas drilling, in particular to a method for optimizing drilling parameters based on plastic energy consumption ratio. Background technique [0002] Low drilling efficiency is one of the main factors causing high oil and gas drilling costs. How to improve drilling efficiency and reduce drilling costs is a long-term difficult problem in the process of oil and gas drilling. At present, mechanical rock breaking is still the main operation method of oil and gas drilling. PDC bit is the most important tool for mechanical rock breaking. The cutting and rock breaking efficiency of its drill teeth directly determines the drilling efficiency and drilling cost. How to find the best rock-breaking efficiency of the drill teeth, guide the optimization of the drill bit design and optimize the drilling parameters, plays a vital role in improving the drilling efficiency and reducing the drilling cost. [0003] Ac...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/00
CPCG06F30/20
Inventor 祝效华刘伟吉童华
Owner SOUTHWEST PETROLEUM UNIV
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