Testing device for testing friction and torque of drilling column

A test device and anti-torque technology, applied in natural gas drilling and petroleum fields, can solve problems such as only considering interaction

Pending Publication Date: 2019-03-19
XI'AN PETROLEUM UNIVERSITY
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  • Abstract
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AI Technical Summary

Problems solved by technology

The existing test equipment only considers the interaction between the drill string and the wellbore in the horizontal well section, and ignores the influence of the interaction between the drill string and the wellbore in the vertical and curved well sections on the mechanical behavior of the drill string. There is an urgent need for a drill string friction torque test device that can simulate a complete wellbore

Method used

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  • Testing device for testing friction and torque of drilling column

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Embodiment Construction

[0020] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0021] refer to figure 1 , Drill string friction torque test device, including drilling weight loading system, rotation system, wellbore simulation system, detection system to form an organic whole.

[0022] The drilling pressure loading system is composed of a servo motor 1, three synchronous wheels 2, a synchronous belt 3, two ball screws 4, a slide table 5, a sliding bearing 6, a limit switch 7 and the like. The servo motor 1 is connected to the synchronous belt 3 through the synchronous wheel 2 to drive the ball screw 4 to rotate, so that the slide table 5 connected with the nut on the ball screw 4 moves up and down, and applies an axial force to the drill string system; The position switch 7 plays the role of a protective device by limiting the upward or downward movement position of the slide table 5; friction. By adjusting the servo motor 1, it is p...

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Abstract

The invention provides a testing device for testing friction and torque of a drilling column. The testing device comprises a drilling pressure loading system, a rotary system, a well body simulation system and a detection system, wherein the drilling pressure loading system comprises a servo motor I; the servo motor I is connected with a synchronous belt through a synchronous wheel so as to drivea ball screw to rotate; the ball screw is connected with a sliding platform; the sliding platform moves up and down along the ball screw; the rotary system comprises a servo motor II arranged on the sliding platform; the servo motor II is connected with the drilling column through a shaft coupler so as to drive the drilling column to rotate and move; the well body simulation system comprises the drilling column; the bottom of the drilling column is connected with one end of a shaft; the other end of the shaft is connected with a drilling bit; the detection system comprises a displacement sensor and a compression force sensor which are mounted on a horizontal section of the drilling column, and a dynamic torque sensor and a pull pressure sensor which are arranged on a vertical section and the horizontal section of the drilling column; and a drillable device is arranged at the end part of the drilling bit. The testing device has the characteristics of simplicity in operation and easinessfor realization.

Description

technical field [0001] The invention relates to the technical field of oil and natural gas drilling, in particular to a drilling string friction torque testing device. Background technique [0002] Drill string friction torque is the main factor affecting the drilling efficiency of horizontal wells and extended reach wells. Accurate friction torque is the key to optimize drilling operation parameters and achieve efficient, fast and successful drilling. However, due to many assumptions in the existing friction torque theoretical model, the calculated value is quite different from the real value, and the model cannot accurately reflect the mechanical behavior of the drill string. Therefore, experimental research has become an important way to promote the continuous improvement of the theoretical model and obtain the real static, kinematic and dynamic behavior of the drill string. The existing test equipment only considers the interaction between the drill string and the wellb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/22G01N3/56G01N3/08
CPCG01N3/22G01N3/08G01N3/56G01N2203/0026G01N2203/005G01N2203/0266
Inventor 吴泽兵吕澜涛郭龙龙王文娟王勇勇张帅潘玉杰莫克塔里·德南张文超周珂飞黄海赵海超郑维新
Owner XI'AN PETROLEUM UNIVERSITY
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