CN203452698U - Large-channel well-flushing diversion switch - Google Patents

Abstract

The utility model relates to a large-channel well-flushing diversion switch. The lower portion of an upper connector is connected with the upper portion of a connecting pipe, internal threads on the lower portion of the connecting pipe are connected with external threads on the upper portion of a diversion connector, the lower portion of the diversion connector is connected with a lower connector, and external threads on the lower portion of a valve bank are connected with internal threads on the upper portion of the diversion connector; the diversion connector is provided with a well-flushing channel and a vertical liquid inlet channel, the well-flushing channel is communicated with the exterior of the connecting pipe, and the vertical liquid inlet channel is communicated with the lower connector; oil pipe internal threads are arranged on the upper portion of the upper connector, oil pipe external threads are arranged on the lower portion of the lower connector, the axis of the internal threads on the upper portion of the diversion connector and the axis of the diversion connector are the same, and the eccentric distance is 5-13mm; a sand guide slope block is installed on the upper end face of the diversion connector and does not coincide with the vertical liquid inlet channel, liquid in a sleeve can enter through the well-flushing channel, and well liquid cannot return and come out from the well-flushing channel. Thus, oil is prevented from being drained and stolen at the sleeve by thieves, the vertical liquid inlet channel is concentrated and enlarged, and 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 top connection, valve group, tube connector, draw sand slope piece, 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 upper surface of tap is installed and is drawn sand slope piece, drawing sand slope piece does not overlap with vertical feed pathway, draw piece both sides, sand slope and have inclined-plane.

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 shape figure of part 4 in accompanying drawing 1.

Accompanying drawing 3 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, draw sand slope piece 4, tap 5, lower contact 6, 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 5 tops, tap 5 bottoms are connected with lower contact 6, the external screw thread of valve group 2 bottoms is connected with the internal thread on tap 5 tops, on tap 5, there are well-flushing passage 8 and vertical feed pathway 7, the exterior of well-flushing passage 8 and tube connector 3, vertical feed pathway 7 communicates with lower contact 6, 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 6, the internal thread axis on tap 5 tops and the axis disalignment of tap 5, eccentric throw is 5-13mm, the upper surface of tap 5 is installed and is drawn sand slope piece 4, drawing sand slope piece 4 does not overlap with vertical feed pathway 7.

Vertical feed pathway 7 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 7, under the effect of valve group 2, can not return out from well-flushing passage 8, during well-flushing, well-flushing water can enter upwards and flow out and realize oil well cleanup from well-flushing passage 8, draw piece 4 both sides, sand slope and have inclined-plane, sand and foreign material can be caused to vertical feed pathway 7 to sinking, make sand and the foreign material can blocking channel.

Claims (1)

1. a major path well washing shunt switch, comprise top connection (1), valve group (2), tube connector (3), draw sand slope piece (4), tap (5), lower contact (6), 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 (5) top, tap (5) bottom is connected with lower contact (6), the external screw thread of valve group (2) bottom is connected with the internal thread on tap (5) top, on tap (5), there are well-flushing passage (8) and vertical feed pathway (7), the exterior of well-flushing passage (8) and tube connector (3), vertical feed pathway (7) communicates with lower contact (6), 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 (6), it is characterized in that: the internal thread axis on tap (5) top and the axis disalignment of tap (5), eccentric throw is 5-13mm, the upper surface of tap (5) is installed and is drawn sand slope piece (4), drawing sand slope piece (4) does not overlap with vertical feed pathway (7), draw sand slope piece (4) both sides and have inclined-plane.

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