CN203452697U

CN203452697U - Large-channel well flushing shunt switch

Info

Publication number: CN203452697U
Application number: CN201320533688.0U
Authority: CN
Inventors: 刘海青; 王伟; 高燕燕; 廖雪枫; 崔惠池; 陈颖; 刘敏; 渠强
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-08-26
Filing date: 2013-08-26
Publication date: 2014-02-26
Anticipated expiration: 2023-08-26

Abstract

A large-channel well flushing shunt switch comprises a connecting pipe, a valve cover, a valve ball, a valve seat, a shunt joint, and a lower joint. The valve ball is placed in the inner cavity of the valve cover; the valve seat is installed in the valve cover; the valve ball is placed on the valve opening at the upper end of the valve seat; the inner thread at the lower part of the valve cover is connected with the outer thread at the upper part of the shunt joint; the upper end surface of the shunt joint abuts against the valve seat; the inner thread of the connecting pipe lower part is connected with the middle outer thread of the shunt joint; the lower part of the shunt joint is connected with the lower joint; a well flushing channel and a vertical liquid-entering channel are arranged on the shunt joint; the well flushing channel is communicated with the outer part of the connecting pipe; the well flushing channel is communicated with the lower joint; the upper part of the connecting pipe is provided with inner oil pipe thread; the lower part of the lower joint is provided with an outer oil pipe thread; the upper outer thread of the shunt joint is in an eccentric structure; the vertical liquid-entering channel on the shunt joint is centralized to the right, the vertical liquid-entering channel is centralized and increased, and the oil flow resistance is small.

Description

A kind of major path well washing shunt switch

Technical field:

The utility model is the instrument that oil well is used, and is a kind of major path well washing shunt switch.

Background technology:

Due to formation leakage, for normal well-flushing, generally at tubing string, divide into a packer and UNICOM's screen casing, but UNICOM's screen casing can not be controlled the flow direction, well liquid can enter sleeve pipe through UNICOM's screen casing, and when oil well pressure is high, well liquid can flow out in sleeve pipe, the thief stolen of can draining the oil at sleeve pipe place, causes crude oil loss.Chinese patent 200820233038.3 < < well washing shunt switch > >, can overcome the problems referred to above, but the runner of its vertical feed pathway (6) is not concentrated, circulation area is little, produces oil flow resistance.

Summary of the invention:

The purpose of this utility model is a kind of major path well washing shunt switch of design, can well-flushing, can blowout prevention, and the oil well production time is long, the thief stolen of can not draining the oil, and influent stream passage is large, and oil flow resistance is little.

The purpose of this utility model is achieved in that and comprises tube connector, valve bonnet, valve ball, valve seat, tap, lower contact, valve ball is placed in the inner chamber of valve bonnet, valve seat is arranged in valve bonnet, valve ball is landed on the valve port of valve seat upper end, the internal thread of valve bonnet bottom is connected with the external screw thread on tap top, valve seat is withstood in the upper surface of tap, the internal thread of tube connector bottom is connected with the middle part external screw thread of tap, the bottom of tap is connected with lower contact, on tap, there are well-flushing passage and vertical feed pathway, the exterior of well-flushing passage and tube connector, vertical feed pathway communicates with lower contact, oil pipe internal thread is arranged at the top of tube connector, oil tube external thread is arranged at the bottom of lower contact, the external screw thread on tap top is eccentric structure, eccentric throw is 8-13mm, deflection left side, vertical feed pathway on tap is concentrated deflection right side.

The beneficial effects of the utility model are: cover liquid in pipe can enter through well-flushing passage, well liquid can not return out from well-flushing passage, so formation oil stream can not enter in sleeve pipe, pipe well is not pressed with many height and can in sleeve pipe, flow out, the molecule that can the avoid theft stolen of draining the oil at sleeve pipe place, the external screw thread on tap top is eccentric structure, makes its vertical feed pathway concentrate and increase, and oil flow resistance is little.

Accompanying drawing explanation:

Accompanying drawing 1 is the assembling drawing of the utility model embodiment.

Accompanying drawing 2 is the sectional views after cutting open from A-A in accompanying drawing 1.

The specific embodiment:

Below in conjunction with accompanying drawing, embodiment of the present utility model is described.

By Fig. 1, 2 can find out, embodiment of the present utility model comprises tube connector 1, valve bonnet 2, valve ball 3, valve seat 4, tap 6, lower contact 8, valve ball 3 is placed in the inner chamber of valve bonnet 2, valve seat 4 is arranged on 2 li of valve bonnets, valve ball 3 is landed on the valve port of valve seat 4 upper ends, the internal thread of valve bonnet 2 bottoms is connected with the external screw thread on tap 6 tops, valve seat 4 is withstood in the upper surface of tap 6, the internal thread of tube connector 1 bottom is connected with the middle part external screw thread of tap 6, the bottom of tap 6 is connected with lower contact 8, on tap 6, there are well-flushing passage 7 and vertical feed pathway 5, the exterior of well-flushing passage 7 and tube connector 1, the inside of well-flushing passage 7 communicates with the endoporus of valve seat 4, vertical feed pathway 5 communicates with lower contact 8, oil pipe internal thread is arranged at the top of tube connector 1, oil tube external thread is arranged at the bottom of lower contact 8, the external screw thread on tap 6 tops is eccentric structure, eccentric throw is 8-13mm, deflection left side, vertical feed pathway 5 on tap 6 is concentrated deflection right side.

Vertical feed pathway 5 concentrates on a place, and passage is large, can not pile up foreign material, can sand setting.Well liquid upwards flows through vertical feed pathway 5, under the effect of valve ball 3, can not return out from well-flushing passage 7, and during well-flushing, well-flushing water can enter upwards and flow out and realize oil well cleanup from well-flushing passage 7.

Claims

1. a major path well washing shunt switch, comprise tube connector (1), valve bonnet (2), valve ball (3), valve seat (4), tap (6), lower contact (8), valve ball (3) is placed in the inner chamber of valve bonnet (2), it is inner that valve seat (4) is arranged on valve bonnet (2), valve ball (3) is landed on the valve port of valve seat (4) upper end, the internal thread of valve bonnet (2) bottom is connected with the external screw thread on tap (6) top, valve seat (4) is withstood in the upper surface of tap (6), the internal thread of tube connector (1) bottom is connected with the middle part external screw thread of tap (6), the bottom of tap (6) is connected with lower contact (8), on tap (6), there are well-flushing passage (7) and vertical feed pathway (5), the exterior of well-flushing passage (7) and tube connector (1), vertical feed pathway (5) communicates with lower contact (8), oil pipe internal thread is arranged at the top of tube connector (1), oil tube external thread is arranged at the bottom of lower contact (8), it is characterized in that: the external screw thread on tap (6) top is eccentric structure, eccentric throw is 8-13mm, deflection left side, vertical feed pathway (5) on tap (6) is concentrated deflection right side.