Clinometer centralizer

An inclinometer and matrix technology, which is used in surveying, drilling equipment, wellbore/well components, etc., can solve the problem that the end of the centralizer is easily damaged by the impact of mud, the centralizer cannot function as a centralizer, and the transmission signal is unstable, etc. problem, to achieve the effect of good righting effect, prolong service life and simple structure

Inactive Publication Date: 2015-04-15
TIANJIN DAGANG OILFIELD SHENGDA TECH
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

The centralizer is used to keep the inclinometer while drilling in the center all the time, preventing bending and vibration, so as to ensure the accuracy of the measurement data. The existing spiral centralizers, six-wing centralizers, etc. have high cost, complex structure, and vulnerable parts. Too many, the transmission signal is also unstable, which affects the use effect, and the end of the centralizer is easily damaged by the impact of mud during use, which may easily make the centralizer unable to perform the centralizing function

Method used

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  • Clinometer centralizer

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Embodiment Construction

[0010] The specific implementation of the present invention will be described in detail below in conjunction with the drawings and preferred embodiments. Such as figure 1 As shown, an inclinometer centralizing device includes a base 1 on which an upper end 2 and a lower end 3 are installed, a centralizing body 4 is provided on the base, and a rubber sleeve is sheathed outside the centralizing body 5. The middle part of the rubber sleeve is provided with a ring-shaped arc-shaped protrusion 6; the upper and lower parts of the rubber cylinder are respectively provided with counterbores 7, and fastening bolts 8 are installed in the counterbores. Fastening bolts fix the rubber cylinder on the centralizing body. A wear-resistant layer 9 is provided on the outside of the rubber cylinder. The wear-resistant layer connects the upper and lower ends of the wear-resistant layer with the base body. With retaining ring 10.

[0011] The two ends of the wear-resistant layer are respectively lo...

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Abstract

The invention relates to a drilling device used in oil gas drilling, in particular to a clinometer centralizer. The clinometer centralizer comprises a base body, wherein an upper end and a lower end are mounted on the base body, and a centralizer body is further arranged on the base body. A rubber sleeve is sleeved on the outer portion of the centralizer body, and a ring-shaped arc protrusion is arranged in the middle of the rubber sleeve. Countersinks are formed in the upper portion and the lower portion of the rubber sleeve, and fastening bolts are mounted in the countersinks and fix the rubber sleeve on the centralizer body. An abrasion resistant layer is arranged on the outer portion of the rubber sleeve, and retaining rings are arranged at the connection position of the upper end and the base body and the connection position of the lower end and the base body. The clinometer centralizer is simple in structure, reasonable in design and good in the centralizing effect; the arc protrusion is arranged in the middle of the rubber sleeve and the abrasion resistant layer is arranged on the outer portion of the arc protrusion, so the inclinometer can stay at the center constantly. In addition, the clinometer centralizer is small in friction so that eccentric wear of the centralizer can be prevented.

Description

【Technical Field】 [0001] The invention relates to a drilling device used in oil and gas drilling, in particular to an inclinometer centralizing device. 【Background technique】 [0002] Currently, wireless inclinometers while drilling have been more commonly used in the oil drilling rig drilling industry. The centralizer of the wireless inclinometer while drilling, as a universal interface to connect various parts of the instrument, its reliability and durability have become a concern of oilfield users, because it directly affects the service life of the wireless inclinometer while drilling And the success rate of downhole. The centralizer is used to keep the while-drilling inclinometer in the center position to prevent bending and vibration to ensure the accuracy of the measurement data. The existing spiral centralizers, six-wing centralizers, etc., are costly, complex in structure, and vulnerable Many, the transmission signal is also unstable, which affects the use effect, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B17/10E21B47/02
CPCE21B17/10E21B47/02
Inventor 李维萍
Owner TIANJIN DAGANG OILFIELD SHENGDA TECH
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