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Top-drive drill rod well cementing head

A technology of cementing cement and drill pipe, which is applied in earthwork drilling, wellbore/well components, sealing/isolation, etc., to achieve the effect of reducing operation time, reducing labor intensity and improving cementing quality

Inactive Publication Date: 2013-03-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to overcome the defects that the existing cementing head cannot be connected with the top driving device, and cannot be rotated forward or reversed with a large torque as a whole

Method used

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  • Top-drive drill rod well cementing head
  • Top-drive drill rod well cementing head
  • Top-drive drill rod well cementing head

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Embodiment Construction

[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can more clearly understand the advantages and effects of the present invention.

[0029] It should be noted that the structures, proportions, sizes, etc. shown in the drawings of the specification are only used to cooperate with specific implementation methods, so that those skilled in the art can understand the concept of the present invention more clearly, and are not intended to limit the scope of protection of the present invention. . Any structural modification, change in proportional relationship or size adjustment should still fall within the protection scope of the present invention, provided that it does not affect the function and purpose of the present invention.

[0030] Such as figure 1 As shown, a top drive drill pipe cementing head of the present invention includes a main body pipe 1 and...

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Abstract

The invention discloses a top-drive drill rod well cementing head which comprises a body tube and a lower nipple, wherein the lower end of the body tube is in detachable connection with the upper end of the lower nipple, an upper connecting part is arranged at the upper end of the body tube, and a lower connecting part is arranged at the lower end of the lower nipple; a rubber plug is arranged in the body tube, a rubber plug releaser and an outer slide sleeve are installed on the body tube, and the outer slide sleeve is in spline connection respectively with the lower end of the body tube and the upper end of the lower nipple. The top-drive drill rod well cementing head can integrally rotate forwards or backwards along with a top-drive device and transfer a high torque. In conventional casing cementing construction, the pipeline flow of cement circulation and cement displacement can be optimized, connections of drilling platform cementing high-pressure pipelines and accessories are effectively reduced, and labor intensity and potential unsafe factors are reduced. In tail pipe hanger cementing construction, movable liner string columns which can vertically move in a large scale can be formed. The top-drive drill rod well cementing head can be used for cleaning of boreholes, and cementing quality is improved.

Description

technical field [0001] The invention relates to a well cementing and well completion tool for oil and natural gas wells, in particular to a top drive type drill pipe cementing head. Background technique [0002] In the exploration and development of offshore oil and natural gas, offshore fixed, semi-submersible and floating drilling platforms are widely used at home and abroad. Drill pipe cement head is commonly used in the casing construction of each layer of semi-submersible and floating drilling platforms to achieve cementing and cementing. The existing conventional drill pipe cementing head is more suitable for drilling cementing construction of land well crews and offshore (shallow water) fixed platforms; for semi-submersible and floating (shallow, medium and deep water) drilling platforms, due to The wellhead device is under water, and with the continuous improvement and improvement of drilling equipment technology in recent years, there are some problems in the casin...

Claims

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Application Information

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IPC IPC(8): E21B33/13
Inventor 贺良弟吕金山陈革强
Owner CHINA PETROLEUM & CHEM CORP
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