CN203463070U

CN203463070U - Diverter switch for well washing

Info

Publication number: CN203463070U
Application number: CN201320463849.3U
Authority: CN
Inventors: 寇延青; 王炼杰; 易鲁川; 黄勤; 钱程; 许海玲
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-07-24
Filing date: 2013-07-24
Publication date: 2014-03-05
Anticipated expiration: 2023-07-24

Abstract

The utility model discloses a diverter switch for well washing. According to the diverter switch for the well washing, the lower portion of an upper connector is connected with the upper portion of a connecting pipe; internal threads which are arranged on the lower portion of the connecting pipe are connected with external threads which are arranged on the upper portion of a diverting connector; the lower portion of the diverting connector is connected with a lower connector; external threads which are arranged on the lower portion of a valve group are connected with internal threads which are arranged on the upper portion of the diverting connector; a well washing channel and a vertical fluid inlet channel are arranged on the diverting connector; the well washing channel is communicated with the external of the connecting pipe; the vertical fluid inlet channel is communicated with the lower connector; the upper portion of the upper connector is provided with oil pipe internal threads; the lower portion of the lower connector is provided with oil pipe external threads; the axis of the internal threads which are arranged on the upper portion of the diverting connector is uncoaxial to that of the diverting connector and the eccentric distance is from 5 to 13 mm; fluid can enter into a casing pipe through the well washing channel and the well fluid cannot be returned from the well washing channel, so that thieves can be prevented from draining oil or stealing oil from the casing pipe; the axis of the internal threads which are arranged on the upper portion of the diverting connector is uncoaxial to that of the diverting connector, so that the vertical fluid inlet channel is centralized and enlarged and the oil flowing resistance is small.

Description

Well washing shunt switch

Technical field:

The utility model is the instrument that oil well is used, and is a kind of 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 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 top connection, valve group, tube connector, tap, lower contact, top connection bottom is connected with tube connector top, the internal thread of tube connector bottom is connected with the external screw thread on tap top, tap bottom is connected with lower contact, the external screw thread of valve group bottom is connected with the internal thread on tap top, 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 top connection, the outer spiral shell of oil pipe is arranged at the bottom of lower contact, the internal thread axis on tap top and the axis disalignment of tap, eccentric throw is 5-13mm.

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 internal thread axis on tap top and the axis disalignment of tap, make 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.

As seen from Figure 1, embodiment of the present utility model comprises top connection 1, valve group 2, tube connector 3, tap 4, lower contact 5, top connection 1 bottom is connected with tube connector 3 tops, the internal thread of tube connector 3 bottoms is connected with the external screw thread on tap 4 tops, tap 4 bottoms are connected with lower contact 5, the external screw thread of valve group 2 bottoms is connected with the internal thread on tap 4 tops, on tap 4, there are well-flushing passage 7 and vertical feed pathway 6, the exterior of well-flushing passage 7 and tube connector 3, vertical feed pathway 6 communicates with lower contact 5, oil pipe internal thread is arranged at the top of top connection 1, the outer spiral shell of oil pipe is arranged at the bottom of lower contact 5, the internal thread axis on tap 4 tops and the axis disalignment of tap 4, eccentric throw is 5-13mm.

Vertical feed pathway 6 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 6, under the effect of valve group 2, 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 well washing shunt switch, comprise top connection (1), valve group (2), tube connector (3), tap (4), lower contact (5), top connection (1) bottom is connected with tube connector (3) top, the internal thread of tube connector (3) bottom is connected with the external screw thread on tap (4) top, tap (4) bottom is connected with lower contact (5), the external screw thread of valve group (2) bottom is connected with the internal thread on tap (4) top, on tap (4), there are well-flushing passage (7) and vertical feed pathway (6), the exterior of well-flushing passage (7) and tube connector (3), vertical feed pathway (6) communicates with lower contact (5), oil pipe internal thread is arranged at the top of top connection (1), the outer spiral shell of oil pipe is arranged at the bottom of lower contact (5), it is characterized in that: the internal thread axis on tap (4) top and the axis disalignment of tap (4), eccentric throw is 5-13mm.