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Method and system for optimizing drilling parameters

A technique of drilling parameters and indexes, which is applied to the automatic control system of drilling, drilling equipment, earthwork drilling and production, etc. It can solve the problems of not being able to maintain high efficiency and provide drilling optimization strategies, and achieve the effect of improving drilling efficiency

Active Publication Date: 2013-04-17
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] Due to the complex geological conditions, although the drilling exploration activities are carried out in the same area, the geological conditions faced by each drilling exploration are different, so the artificial or statistical results based on the data obtained from the previous drilling are only It can be used as a reference for this drilling, but cannot provide an accurate drilling optimization strategy, so that the drill bit cannot maintain high efficiency according to the current geological conditions when breaking rocks

Method used

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  • Method and system for optimizing drilling parameters

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Embodiment 1

[0040] Embodiment 1 of the present invention proposes a kind of method of drilling parameter optimization, and its flow process is as follows figure 1 shown, including:

[0041] Step 101: Obtain real-time drilling parameters;

[0042] Step 102: Calculate the virtual strength index in real time according to the obtained drilling parameters;

[0043] Step 103: According to the virtual strength index, adjust the drilling parameters to reduce the virtual strength index;

[0044] Wherein, the drilling parameters are specifically:

[0045] Drilling parameters such as rotary speed, torque, pressure on bit, ROP, displacement of mud pump, pressure drop of bit, etc.

[0046] The embodiment of the present invention uses the drilling parameters fed back by real-time geological environment changes, and calculates the virtual strength index VSI in real time. According to the virtual strength index VSI related to the real strength index, the drilling parameters are adjusted in real time t...

Embodiment 2

[0048] Embodiment 2 of the present invention proposes a kind of method of drilling parameter optimization, and its flow process is as follows figure 2 shown, including:

[0049] Step 201: Obtain real-time drilling parameters.

[0050] During the drilling process, the mud logging tool acquires and saves various drilling parameters in real time. Mud logging instrument is a set of special mud logging equipment, which is used to record drilling engineering parameters and drilling fluid parameters. Drilling engineering parameters and drilling fluid parameters are used to monitor drilling safety and provide optimized parameters for drilling. It is mainly composed of computer system, sensor, chromatograph and other parts. It is an indispensable and important part of mud logging and drilling construction.

[0051] Connect the computer or server equipped with the VSI (Virtual Strength Index, virtual strength index) drilling parameter optimization software system to the interface o...

Embodiment 3

[0084] Embodiment 3 of the present invention proposes a kind of drilling parameter optimization device, its structure is as follows image 3 shown, including:

[0085] The obtaining module 301 is used to obtain real-time drilling parameters.

[0086] The calculation module 302 is used for calculating the virtual intensity index in real time according to the obtained drilling parameters.

[0087] The calculation module 302 is specifically used for:

[0088] VSI = 40 WOB e π d b 2 + 110 T × N ROP × d b 2 + 4 ηΔ ...

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Abstract

The invention discloses a method and a device for optimizing drilling parameters, and belongs to the oil drilling field. The method comprises obtaining drilling parameters obtained in real time; calculating a virtual strength index (VSI) in real time according to the obtained drilling parameters which comprise rotary disc rotation speed, torque, drilling pressure, mechanical drilling speed, slush pump displacement, bit pressure drops and the like; and adjusting the drilling parameters to reduce the VSI according to the virtual strength index. According to the method and the device for optimizing drilling parameters, the VSI is calculated in real time through the drilling parameters fed back through real-time geological environment changes, and the drilling parameters are adjusted in real time according to the VSI relevant to an actual strength index, so that the bit cutting efficiency is in a possible optimal state, and the drilling efficiency is improved.

Description

technical field [0001] The invention relates to the field of oil drilling, in particular to a method and device for optimizing drilling parameters. Background technique [0002] The rapid development of oil and gas field exploration and development has brought many challenges to the development of drilling technology. In recent years, with the continuous application of various drill bits in steerable and rotary steerable systems and the increasing drilling depth, how to effectively use the limited energy on the ground to optimize the performance of drill bits has become increasingly important, especially for horizontal wells, directional wells and large wells. For wells with complex structures such as displacement wells, comprehensive analysis and clarification of the energy utilization rate at the interface between the rock and the drill bit are the key factors for optimizing the ROP and successfully drilling the target. [0003] In the process of existing oil and gas expl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B44/00E21B47/00
Inventor 崔猛汪海阁程荣超纪国栋于洋
Owner BC P INC CHINA NAT PETROLEUM CORP
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