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Drill pipe mud scraper and mud scraping method for rapid drilling under complex well conditions

A mud scraper, complex technology, applied in drill pipe, drill pipe, drilling equipment, etc., to increase the risk of downhole

Active Publication Date: 2021-04-16
青岛中瑞威飞海洋装备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a drill pipe mud scraper and its mud scraping method for rapid drilling under complex well conditions, so as to solve the problem that there is no suitable automatic mud scraping equipment in the prior art for rapid drilling under complex well conditions. Solve the problem of manual operation, achieve the purpose of improving downhole safety and reducing the manpower consumption of drilling

Method used

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  • Drill pipe mud scraper and mud scraping method for rapid drilling under complex well conditions
  • Drill pipe mud scraper and mud scraping method for rapid drilling under complex well conditions
  • Drill pipe mud scraper and mud scraping method for rapid drilling under complex well conditions

Examples

Experimental program
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Effect test

Embodiment 1

[0047] Such as Figure 1 to Figure 3 The drill pipe mud scraper shown for rapid drilling under complex well conditions includes fasteners 1 for detachable connection to the fixed equipment on the drill floor, mounting parts 3 for installing mud scraping rings 2, and It includes an elastic member 4 connected between the fastener 1 and the mounting part 3; the mud scraping ring 2 is an unclosed ring structure, and the two ends of the mud scraping ring 2 are fixed ends and movable ends respectively. The end is fixedly connected to the mounting part 3, and the movable end is detachably connected to the mounting part 3; when there is no external force, the inner diameter of the mud scraping ring 2 is smaller than the outer diameter of the drill pipe to be scraped.

[0048] In this embodiment, the fastener 1 is preferably a throat hoop or a hoop, and the elastic member 4 is preferably a nylon elastic cord or a belt.

[0049] In this embodiment, the detachable connection between the...

Embodiment 2

[0054] The drill pipe mud scraper used for rapid drilling under complex well conditions is different from Embodiment 1 in that the detachable connection between the movable end and the mounting part in this embodiment is through the chute 7, the slider 8, and the sinker 9 achieve together. Specifically: the surface of the mounting part 3 is provided with a chute 7, and one end of the chute 7 communicates with a sinker 9; the movable end is fixedly connected with a slider 8 that matches the chute 7, and the slider 8 can enter and exit said chute 7 from sinker 9.

[0055] Figure 4 and Figure 5 An embodiment is illustrated: the chute 7 is a dovetail chute, and the chute 7 is in a "U" shape, which may also be called an "η" shape. Figure 6 shown with Figure 5 The slide block 8 structure that middle chute 7 matches.

[0056] Figure 7 Another embodiment is illustrated: the chute 7 is a T-shaped groove, and the chute 7 is "U"-shaped, which can also be called "n"-shaped. F...

Embodiment 3

[0061] Such as figure 2 and image 3 The shown drill pipe mud scraper for rapid drilling under complex well conditions, on the basis of any of the above-mentioned embodiments, the mounting part 3 includes side one and side two perpendicular to each other, the fixed end, the movable side The ends are connected to side one and side two respectively. Such as image 3 In the embodiment shown, the projection of the mud scraping ring on the horizontal plane can form a substantially closed circle, thus ensuring sufficient mud scraping effect on the outer wall of the drill pipe.

[0062] As shown in the figure, in this embodiment, when the mud scraping ring is set on the drill pipe, the drill pipe is vertical, the mud scraping ring is basically horizontal, the side one is facing the direction of the drill pipe, and the side two is located on the upper surface of the mounting part 3;

[0063] Of course, the second side can also be the lower surface of the mounting part 3, but the s...

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Abstract

The invention discloses a drill pipe mud scraper and a mud scraper method for rapid drilling under complex well conditions, including fasteners for detachable connection to the fixed equipment on the drill floor, and installation for installing the mud scraper ring. The parts also include elastic parts connected between the fasteners and the mounting parts; the mud scraping ring is an open ring structure, and the two ends of the mud scraping ring are fixed ends and movable ends respectively, and the fixed ends are fixed Connected to the mounting part, the movable end is detachably connected to the mounting part; when there is no external force, the inner diameter of the mud scraping ring is smaller than the outer diameter of the drill pipe to be scraped. The purpose of the present invention is to provide a drill pipe mud scraper and a mud scraping method for rapid drilling under complex well conditions, so as to solve the problem in the prior art that there is no need to disassemble and assemble the disk during rapid drilling or short drilling operations. The problem of core filling and mud scraping without consuming manpower of the driller is achieved to improve downhole safety and reduce the manpower consumption of drilling.

Description

technical field [0001] The invention relates to the field of oil and gas development, in particular to a drill pipe mud scraper and a mud scraping method for rapid drilling under complex well conditions. Background technique [0002] The drill pipe mud scraper is used in the field of oil and gas drilling. It is used to scrape off the drilling fluid attached to the outer wall of the drill pipe during the drilling process, so as to avoid the drill pipe column being pulled out from throwing a large amount of drilling fluid on the drill floor and causing the drill floor to be too dirty. The wellhead of the drill floor has a turntable and a matching bushing. The traditional drill pipe mud scraper is generally used in conjunction with the turntable bushing. When scraping mud is needed, first use a crane or pneumatic winch to take out the bushing, and then put it into the matching mud scraper. , and then reinstall the bushing to carry out the tripping operation. After the drilling...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B37/02E21B19/18
CPCE21B19/18E21B37/02
Inventor 熊勇熊朝柱
Owner 青岛中瑞威飞海洋装备有限公司