CN206205827U - Flexible buffer oil drill rocker - Google Patents

Abstract

The utility model discloses a kind of flexible buffer oil drill rocker, including：Upper drilling rod and lower drilling rod, interconnected drilling fluid runner is provided with drilling rod and lower drilling rod on described, the lower end of drilling rod is provided with adpting flange on described, the upper end of the lower drilling rod is provided with lower adpting flange, the lower end of adpting flange is evenly arranged with spring groove on some on described, some lower spring grooves cooperated with upper spring groove are evenly arranged with the upper end of the lower adpting flange, it is connected with high-strength nut by some high-strength bolts between the upper adpting flange and lower adpting flange, the high-strength bolt sequentially passes through adpting flange from top to bottom, upper spring groove, lower spring groove and lower adpting flange are connected with high-strength nut, buffer spring is arranged with high-strength bolt on described in spring groove and lower spring groove, the upper end of the buffer spring offsets with upper adpting flange.

Description

Flexible buffer oil drill pipe

technical field

The utility model relates to a petroleum machine, in particular to a flexible cushioning petroleum drilling rod.

Background technique

Petroleum resources are a non-renewable resource. With the increasing potential of oil production efficiency control, drilling and workover operations in oilfields gradually extend to deeper and more complex geology. There are more and more inclined wells, horizontal wells and measure wells. Here Under the trend, people's requirements for oil drill pipes are getting higher and higher. When the currently used oil drill pipe encounters complex and hard geology during the drilling process, it can only drill forward continuously without buffering effect, which is easy to cause damage to the drill pipe or even break it. The service life of the drill pipe is short and cannot meet people's needs. Requirements.

Utility model content

The technical problem to be solved by the utility model is to provide a flexible buffer oil drill pipe with good buffer effect.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is: a flexible cushioning oil drill pipe, including: an upper drill pipe and a lower drill pipe, and a drilling fluid flow connected to each other is arranged in the upper drill pipe and the lower drill pipe Road, the lower end of the upper drill rod is provided with an upper connecting flange, the upper end of the lower drill rod is provided with a lower connecting flange, and a number of upper spring grooves are evenly arranged at the lower end of the upper connecting flange. The upper end of the lower connecting flange is evenly provided with a number of lower spring grooves that cooperate with the upper spring grooves, and the upper connection method

The flange and the lower connecting flange are connected by a number of high-strength bolts and high-strength nuts. connection, a buffer spring is sleeved on the high-strength bolts in the upper spring groove and the lower spring groove, the upper end of the buffer spring is in contact with the upper connecting flange, and the lower end of the buffer spring is in contact with the lower connecting flange. A buffer gap is provided between the upper connecting flange and the lower connecting flange, an outer sealing slip ring is arranged on the upper connecting flange inside the upper spring groove, and an outer sealing slip ring is arranged on the lower connecting flange. The outer sealing chute where the sealing slip rings cooperate with each other, an outer polytetrafluoroethylene gasket is arranged between the outer sealing slip ring and the lower connecting flange, and an outer PTFE gasket is arranged on the lower connecting flange inside the outer sealing slip ring There is an inner sealing slip ring, and an inner sealing chute cooperating with the inner sealing slip ring is arranged on the upper connecting flange, and an inner polytetrafluoroethylene is arranged between the inner sealing slip ring and the upper connecting flange Gasket.

The utility model has the advantages that: the above-mentioned flexible cushioning oil drill pipe has a novel structure and is easy to install. When the drill pipe encounters complex and hard geology in the process of drilling, it will stretch and drill, effectively playing a buffer role, and the buffer can prevent the drill pipe from Damage, good buffering effect, long service life of the drill pipe, at the same time, the use of inner and outer sealing slip rings can prevent the drilling fluid in the drill pipe from flowing out from the buffer gap, and the sealing effect is good.

Description of drawings

Fig. 1 is a structural schematic diagram of the utility model flexible buffer oil drill pipe.

In the figure: 1. Upper drill pipe, 2. Lower drill pipe, 3. Drilling fluid flow channel, 4. Upper connecting flange, 5. Lower connecting flange, 6. Upper spring groove, 7. Lower spring groove, 8. High-strength bolts, 9, high-strength nuts, 10, buffer

Spring, 11, buffer gap, 12, outer sealing slip ring, 13, outer sealing chute, 14, outer polytetrafluoroethylene gasket, 15, inner sealing slip ring, 16, inner sealing chute, 17, inner polytetrafluoroethylene Fluorine gasket.

detailed description

The specific content of the present utility model is described in detail below in conjunction with accompanying drawing and specific embodiment.

As shown in Figure 1, the flexible cushioning oil drill pipe includes: an upper drill pipe 1 and a lower drill pipe 2, and a drilling fluid flow channel 3 communicating with each other is arranged in the upper drill pipe 1 and the lower drill pipe 2. The lower end of the upper drill rod 1 is provided with an upper connecting flange 4, the upper end of the lower drill rod 2 is provided with a lower connecting flange 5, and the lower end of the upper connecting flange 4 is evenly provided with a number of upper spring grooves 6 , the upper end of the lower connecting flange 5 is evenly provided with a number of lower spring grooves 7 that cooperate with the upper spring groove 6, and a number of high-strength bolts 8 and high-strength bolts are passed between the upper connecting flange 4 and the lower connecting flange 5. The nuts 9 are connected, and the high-strength bolts 8 pass through the upper connecting flange 4, the upper spring groove 6, the lower spring groove 7 and the lower connecting flange 5 from top to bottom to connect with the high-strength nut 9. The high-strength bolt 8 in the groove 6 and the lower spring groove 7 is covered with a buffer spring 10, the upper end of the buffer spring 10 is against the upper connecting flange 4, and the lower end of the buffer spring 10 is against the lower connecting flange 5, A buffer gap 11 is provided between the upper connecting flange 4 and the lower connecting flange 5, and an outer sealing slip ring 12 is arranged on the upper connecting flange 4 inside the upper spring groove 6, and an outer sealing slip ring 12 is arranged on the upper connecting flange 4 inside the upper spring groove 6. The flange 5 is provided with an outer seal chute 13 that cooperates with the outer seal slip ring 12, and an outer polytetrafluoroethylene gasket 14 is arranged between the outer seal slip ring 12 and the lower connecting flange 5, and the The lower connecting flange 5 on the inside of the outer sealing slip ring 12 is provided with an inner sealing slip ring 15, and the upper connecting flange 4 is provided with an internal sealing slip ring.

The rings 15 cooperate with each other in an inner sealing sliding groove 16 , and an inner polytetrafluoroethylene sealing gasket 17 is arranged between the inner sealing sliding ring 15 and the upper connecting flange 4 .

When the above-mentioned flexible buffer oil drill pipe is used, the drilling fluid drives the drill bit to drill through the drilling fluid channel 3 in the upper drill pipe 1 and the lower drill pipe 2. When the drill bit touches complex and hard geology, the drill bit transmits the torque pressure to the lower The drill pipe 2 and the lower drill pipe 2 drive the lower connecting flange 5 to move upward and squeeze the buffer spring 10, the buffer spring 10 is compressed, and the buffer gap 11 is reduced. At this time, the outer seal slip ring 12 is relatively downward in the outer seal chute 13 Sliding, the inner seal slip ring 15 slides upward in the inner seal chute 16, the buffer spring 10 shares the torque pressure transmitted from the drill bit to the lower drill rod 2, and the buffer spring 10 has a reverse force on the lower drill rod 2, so that the Complicated and hard geological areas can realize telescopic drilling and effectively protect the drill pipe and drill bit. At the same time, the outer sealing slip ring 12 and the inner sealing slip ring 15 can prevent the drilling fluid in the drilling fluid channel 3 from flowing out from the buffer gap 11 .

The above-mentioned flexible cushioning oil drill pipe has a novel structure and is easy to install. When the drill pipe encounters complex and hard geology in the process of drilling, it will stretch and drill, which can effectively play a buffer role and prevent the drill pipe from being damaged. The buffer effect is good and the drilling The service life of the rod is long, and the internal and external sealing slip rings can prevent the well fluid in the drill pipe from flowing out from the buffer gap, and the sealing effect is good.

Claims (1)

1. flexible buffer oil drill rocker, it is characterised in that：Including：Upper drilling rod（1）With lower drilling rod（2）, the drilling rod on described（1）With Lower drilling rod（2）Inside it is provided with interconnected drilling fluid runner（3）, the drilling rod on described（1）Lower end be provided with connection method It is blue（4）, in the lower drilling rod（2）Upper end be provided with lower adpting flange（5）, the adpting flange on described（4）Lower end it is uniform It is provided with some upper spring grooves（6）, in the lower adpting flange（5）Upper end be evenly arranged with it is some with upper spring groove（6）Phase The lower spring groove for mutually coordinating（7）, the upper adpting flange（4）With lower adpting flange（5）Between pass through some high-strength bolts（8）With High-strength nut（9）It is connected, the high-strength bolt（8）Adpting flange is sequentially passed through from top to bottom（4）, upper spring groove（6）, under Spring groove（7）With lower adpting flange（5）With high-strength nut（9）It is connected, the spring groove on described（6）With lower spring groove（7）It is interior High-strength bolt（8）On be arranged with buffer spring（10）, the buffer spring（10）Upper end and upper adpting flange（4）Offset, The buffer spring（10）Lower end and lower adpting flange（5）Offset, the adpting flange on described（4）With lower adpting flange（5） Between be provided with buffer gap（11）, the spring groove on described（6）The upper adpting flange of inner side（4）On be provided with external seal slip ring （12）, in the lower adpting flange（5）On be provided with and external seal slip ring（12）The external seal chute of mutual cooperation（13）, institute State external seal slip ring（12）With lower adpting flange（5）Between be provided with outer polytetrafluoroethylene sealing gasket（14）, in the external seal Slip ring（12）The lower adpting flange of inner side（5）On be provided with interior sealing slip ring（15）, the adpting flange on described（4）On be provided with With interior sealing slip ring（15）The interior sealing chute of mutual cooperation（16）, in the interior sealing slip ring（15）With upper adpting flange（4） Between be provided with interior polytetrafluoroethylene sealing gasket（17）.