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Continuous bit feeding supercharging tool with long stroke

A long-stroke, drill-feeding technology, which is applied in the direction of earthwork drilling, rotary drilling rigs, drilling equipment and methods, etc., can solve problems such as feeding difficulties, drill string decompression, etc., achieve simple and reliable control, prevent tool damage, The effect of low failure rate

Inactive Publication Date: 2017-07-18
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a long-stroke continuous drill pressurization tool in order to solve the problem of drill string decompression and difficult feeding

Method used

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  • Continuous bit feeding supercharging tool with long stroke
  • Continuous bit feeding supercharging tool with long stroke
  • Continuous bit feeding supercharging tool with long stroke

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Embodiment Construction

[0016] Such as figure 1 with figure 2 As shown, a long-stroke continuous drill booster tool of the present invention is composed of an upper joint 1, a stator housing 2, a rubber stator 3, a hollow screw rotor 4, a universal shaft 5, a universal housing 6, and a mandrel 7 , thrust bearing a8, propulsion shell 9, locking spring 10, lock sleeve 11, drive pin 12, propulsion screw barrel 13, cover plate 14, claw spring 15, claw 16, screw 17, thrust bearing b18, output shell 19 , push seat tube 20, output shaft 21 and anti-drop cap 22; its structural features are: the upper end of the upper joint 1 is connected with the upper drill string screw, and the lower end of the output shaft 21 is connected with the lower drill string screw; the rubber stator 3 is fixed on The inner cavity of the stator housing 2, the upper end of the stator housing 2 is connected with the lower end of the upper joint 1 with a screw, the lower end of the stator housing 2 is connected with the upper end of...

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Abstract

The invention relates to a continuous bit feeding supercharging tool with a long stroke for drilling operation in the petroleum and natural gas industry. The continuous bit feeding supercharging tool with the long stroke can solve the problem of difficult feeding caused by back-pressure of a drill stem. According to the technical scheme of the continuous bit feeding supercharging tool with the long stroke, the upper end of an upper connector is connected with the upper portion of the drill stem in a screwed mode, the lower end of an output shaft is connected with the lower portion of the drill stem in a screwed mode; a hollow screw rotor is placed in the cavity of a rubber stator; a thrust bearing a is mounted on the upper end surface of a raised step formed on the upper portion of the cavity of a propulsive shell, and a locking spring is mounted on the lower end surface of a raised step formed on the lower portion of the cavity of the propulsive shell; the upper portion of a top circle of a propulsive screw cylinder is sleeved with a lock sleeve, and the upper end surface of the lock sleeve compresses the locking spring; and jaw springs are mounted in axial counter bored holes formed in the outer side of jaws, three jaw springs and the three jaws are placed in three through holes formed in the lower portion of the propulsive shell correspondingly, and three cover plates are fixed to the outer sides of the three through holes formed in the lower portion of the propulsive shell through bolts. According to the lead screw transmission principle, bit feeding and supercharging can be conducted continuously and periodically under a stable drilling fluid inlet flow rate so that bit pressure can be provided for the drill stem continuously, and the length of a horizontal well can be increased effectively.

Description

technical field [0001] The invention relates to a long-stroke continuous drilling pressurization tool used for drilling operations in the petroleum and natural gas industry, in particular to the feeding and application of drill pressure for horizontal well drill strings. Background technique [0002] In the oil and gas industry, drilling operations are an extremely important link, which penetrates into important links such as oil and gas resource exploration and development. Drilling operations require huge investment, high risks, and high technical difficulties. With the continuous development of drilling technology, the drilling depth is also increasing, especially in order to increase the production of oil and gas wells, extended reach wells and horizontal wells have become more and more popular in the oil and gas industry. However, with the increase of drilling depth, drilling operations also encountered technical bottlenecks. During the drilling process of extended rea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B19/08E21B23/04
CPCE21B19/08E21B23/04
Inventor 张梁李镕成邓严梁政邓雄赵勇
Owner SOUTHWEST PETROLEUM UNIV
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