阅读说明：本技术 一种钻杆刮泥器及其使用方法 (Drill rod mud scraper and using method thereof ) 是由 徐非凡 李录科 赵刚 何辉 王武 杨光 信伟 *** 程华林 刘红艳 王红芳 于 2019-10-15 设计创作，主要内容包括：本发明涉及石油钻井技术领域,具体涉及一种钻杆刮泥器及其使用方法,通过在钻杆刮泥器橡胶本体内设置骨架,钻杆接箍时因其内部骨架撑助力撑开,减少橡胶件形变,防止钻杆本体与钻杆接箍外径尺寸相差造成刮泥器变形而影响刮泥效果,将钻杆刮泥器安装在钻盘下,通过钻杆孔套装在钻杆上,然后钻杆上提过程中转盘方瓦将该刮泥器阻挡,所述橡胶本体内的中空空腔还与钻杆孔相通,在起下钻时刮去钻杆表面泥浆油污,钻杆表面泥浆油污通过橡胶本体内的中空空腔从溢流槽排出,清除钻杆壁钻井液,可防止对金属腐蚀,钻杆起下钻时,防止泥浆喷出,方便作业,保障安全,同时使用该结构的钻杆刮泥器操作简单,安装简便,经久耐用。(The invention relates to the technical field of petroleum drilling, in particular to a drill rod mud scraper and a use method thereof, wherein a framework is arranged in a rubber body of the drill rod mud scraper, a drill rod coupling is propped open by the aid of the framework support in the drill rod coupling, the deformation of a rubber part is reduced, the deformation of the mud scraper caused by the external diameter size difference between the drill rod body and the drill rod coupling is prevented from influencing the mud scraping effect, the drill rod mud scraper is arranged below a drill plate and sleeved on a drill rod through a drill rod hole, then the mud scraper is blocked by a rotary plate square tile in the lifting process of the drill rod, a hollow cavity in the rubber body is also communicated with the drill rod hole, mud and oil stains on the surface of the drill rod are scraped during the drilling, the mud and oil stains on the surface of the drill rod are discharged from an overflow groove through the hollow cavity in the rubber body, the drilling fluid on the wall of the drill rod is cleaned, the corrosion, meanwhile, the drill rod mud scraper with the structure is simple to operate, simple and convenient to install and durable.)

1. A drill rod mud scraper is characterized in that: the rubber body (1) is internally provided with a framework, the side wall of the rubber body (1) is provided with an overflow groove (3), the middle part of the rubber body (1) is provided with a drill rod hole (4), the rubber body (1) is of a hollow double-layer structure and comprises a first layer (5) and a second layer (6), the overflow groove (3) is communicated with a hollow cavity in the rubber body (1), and the hollow cavity in the rubber body (1) is also communicated with the drill rod hole (4).

2. The drill pipe mud scraper as claimed in claim 1, wherein: the rubber body (1) is characterized in that frameworks are arranged in the first layer (5) and the second layer (6).

3. The drill pipe mud scraper as claimed in claim 2, wherein: the framework is a spring steel sheet (2), and 4 rings of spring steel sheets (2) are arranged in the first layer (5) and the second layer (6) of the rubber body (1).

4. A drill rod mud scraper according to claim 3, wherein: the 4-ring spring steel sheets (2) are arranged in the first layer (5) and the second layer (6) of the rubber body (1) in a vulcanization mode.

5. The drill pipe mud scraper as claimed in claim 1, wherein: the rubber body (1) is of a disc structure with the diameter of 440mm, 4 overflow grooves (3) are symmetrically formed in the circumferential side wall of the disc of the rubber body (1), and the 4 overflow grooves (3) are communicated with a hollow cavity in the rubber body (1).

6. The drill pipe mud scraper as claimed in claim 1, wherein: the whole thickness of the rubber body (1) is 75mm, and the thicknesses of the first layer (5) and the second layer (6) are both 25 mm.

7. The drill pipe mud scraper as claimed in claim 5, wherein: the bottom surface of the disc structure of the rubber body (1) is also provided with an overflow hole (7), and the overflow hole (7) is communicated with a hollow cavity in the rubber body (1).

8. The drill pipe mud scraper of claim 7, wherein: the number of the overflow holes (7) is 4, and the overflow holes are uniformly arranged on the bottom surface of the disc structure of the rubber body (1).

9. The drill pipe mud scraper as claimed in claim 1, wherein: the rubber body (1) is made of butadiene-acrylonitrile rubber.

10. A method of using a drill pipe scraper comprising a drill pipe scraper as claimed in any one of claims 1 to 8, the method comprising: comprises the following steps

The method comprises the following steps: firstly, a mud scraper is arranged below a drill plate and sleeved on a drill rod through a drill rod hole (4);

step two: on the basis of the step one, the mud scraper is blocked by the rotary table square tile in the lifting process of the drill rod;

step three: and on the basis of the second step, scraping mud oil stains on the surface of the drill rod during tripping.

Technical Field

The invention relates to the technical field of petroleum drilling, in particular to a drill rod mud scraper and a using method thereof.

Background

The novel drill rod mud scraper is a tool for scraping mud attached to the surface of a drill string in the process of tripping in drilling operation, and is mainly made of spring steel sheets serving as a framework and nitrile rubber. In the use process, the mud scraper with the corresponding specification can be replaced according to drill rods with different models. The environment of the drill floor is cleaner, and the clean drill column is easy to inspect scars and timely treat accidents and hidden dangers. Drilling rod mud scraper that the drilling team used now is because of using rubber materials preparation completely, and when the drilling operation scraped drilling rod outer drilling fluid, because of drilling rod body and drilling rod coupling external diameter difference 38mm, cause the mud scraper to warp easily when the drilling rod couples and lead to effective latus rectum can not satisfy and scrape drilling rod body drilling fluid. The invention provides an operation device and an operation method for scraping mud and oil stains on the surface of a drill rod during tripping, reducing the deformation of a rubber part due to the supporting assistance of an internal framework spring during the process of propping through a drill rod coupling, preventing a mud scraper from deforming to influence the mud scraping effect caused by the difference of the outer diameter sizes of a drill rod body and the drill rod coupling, and preventing sundries on a drill floor from falling into a wellhead.

Disclosure of Invention

The invention overcomes the defects of the prior art, provides the drill rod mud scraper and the use method thereof, and particularly has the characteristics of wear resistance, mud erosion resistance, simple operation, simple and convenient installation, durability, tight matching and thorough cleaning of the drill rod.

The technical problem solved by the invention can be realized by adopting the following technical scheme:

the utility model provides a drilling rod mud scraper, includes rubber body, this internal skeleton that is provided with of rubber, it has the overflow launder to open on rubber body's the lateral wall, and open at rubber body's middle part has the drilling rod hole, and rubber body is hollow bilayer structure, including first layer and second floor, overflow launder and this internal cavity intercommunication of rubber, this internal cavity of rubber still communicates with each other with the drilling rod hole.

The first layer and the second layer of the rubber body are both internally provided with frameworks.

The framework is made of spring steel sheets, and 4 circles of spring steel sheets are arranged in the first layer and the second layer of the rubber body.

The 4-ring spring steel sheets are arranged in the first layer and the second layer of the rubber body in a vulcanization mode.

The rubber body is of a disc structure with the diameter of 440mm, 4 overflow grooves are symmetrically formed in the circumferential side wall of the disc of the rubber body, and the 4 overflow grooves are communicated with a hollow cavity in the rubber body.

The whole thickness of rubber body be 75mm, the thickness of first layer and second floor is 25 mm.

The bottom surface of the disc structure of the rubber body is also provided with an overflow hole which is communicated with the hollow cavity in the rubber body.

The number of the overflow holes is 4, and the overflow holes are uniformly arranged on the bottom surface of the disc structure of the rubber body.

The rubber body is made of butadiene-acrylonitrile rubber.

The use method of the drill rod mud scraper comprises any one of the drill rod mud scraper, and comprises the following steps

The method comprises the following steps: firstly, mounting a mud scraper below a drill plate, and sleeving the mud scraper on a drill rod through a drill rod hole;

step two: on the basis of the step one, the mud scraper is blocked by the rotary table square tile in the lifting process of the drill rod;

step three: and on the basis of the second step, scraping mud oil stains on the surface of the drill rod during tripping.

The invention has the beneficial effects that:

compared with the prior art, the invention arranges the framework in the rubber body of the drill rod mud scraper, the internal framework support of the drill rod coupling props open to reduce the deformation of the rubber piece and prevent the deformation of the mud scraper caused by the difference of the external diameters of the drill rod body and the drill rod coupling from influencing the mud scraping effect, the drill rod mud scraper is arranged under the drill plate and sleeved on the drill rod through the drill rod hole, then the rotary table square tile blocks the mud scraper in the lifting process of the drill rod, the hollow cavity in the rubber body is also communicated with the drill rod hole, mud oil stains on the surface of the drill rod are scraped in the lifting process, the mud oil stains on the surface of the drill rod are discharged from the overflow groove through the hollow cavity in the rubber body, the mud collection is facilitated, the sundries on the drill floor are prevented from falling to the wellhead, the drilling fluid can be prevented from returning from the drilling well, the drilling fluid on the wall of the drill rod is cleaned, the corrosion to the metal, the drilling rod mud scraper with the structure is convenient to operate, safe in guarantee, simple and convenient to install and durable.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic front view of the mud scraper of the present invention.

Fig. 2 is a schematic back structure view of the mud scraper of the present invention.

Fig. 3 is a schematic side view of the scraper of the present invention.

Fig. 4 is a schematic cross-sectional structure of the scraper of the present invention.

In the figure: 1-rubber body, 2-spring steel sheet, 3-overflow groove, 4-drill rod hole, 5-first layer, 6-second layer and 7-overflow hole.

Detailed Description