CN202157783U

CN202157783U - Sand setting base ball

Info

Publication number: CN202157783U
Application number: CN201120131647XU
Authority: CN
Inventors: 孙月东; 崔洁; 赵新凯; 任胜利
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-04-17
Filing date: 2011-04-17
Publication date: 2012-03-07
Anticipated expiration: 2021-04-17

Abstract

The utility model discloses a sand setting base ball, which is applied to water injection wells of oil fields and composed of an upper connector (1), an outer pipe (2), sealing rings (3,8,10,12 and 13), a sand cap (4), a valve cover (5), a valve ball(6), a valve seat (7), a supporting seat (8), a spring (9), a middle connector (14), a flow splitting connector (15) and a lower connector (18). A circular sand setting channel (16) is arranged between an upper end blind hole (23) of the flow splitting connector (15) and an excircle, and the circular sand setting channel (16) is communicated with a blind hole (24). A radial groove hole (22) is arranged at an open circular section and communicated with the blind hole (23), an external thread is positioned at the upper end of an excircle and connected with the outer pipe (2), an internal thread is arranged on the upper portion of the upper end blind hole (23) and connected with the middle connector (14), and the internal thread of the lower end blind hole (24) is in threaded connection with the upper end of the lower connector (18). The san setting base ball has the functions of completely preventing valve balls from being buried by sand and the like.

Description

Ball at the bottom of the sand setting formula

One, technical field:

The utility model relates to ball at the bottom of a kind of sand setting formula, is a kind of supporting instrument of water injection well in oil fields tubing string that is used for, and belongs to oil field downhole tool class.

Two, background technology:

Current, ball is the ball-and-seat formula to field use basically at the end of water injection well, has two aspect problems: the one, and no independent sand setting passage, valve ball are prone to be buried by deposits such as sand setting, rust deposites, and causing valve ball to open can not well-flushing; The 2nd, can not draining, tubing string emits spray to carry when causing operation, both makes troubles to site operation, pollutes environment again.The patent No. is 201020253892.3 ball at the bottom of a kind of sand setting formula to be provided; Bury the sand setting runner of problem though designed solution sand; But the sand setting flow area is less; Well sedimentation for deposit is more is not smooth, and sand buried end ball behind the sand setting runner that still results in blockage does not have thoroughly to solve the problem that valve ball is buried by sand.

Three, summary of the invention:

The purpose of the utility model is: provide that a kind of sand setting flow area is big, sedimentation is unimpeded, can thoroughly solve ball at the bottom of the sand setting that sand buries the valve ball problem.

The utility model is achieved in that the utility model is made up of top connection, outer tube, sealing ring one, sealing ring two, sealing ring three, sealing ring four, sealing ring five, sealing ring six, sand cap, valve bonnet, valve ball, valve seat, supporting seat, spring, transition joint, tap and lower contact, and the cylindrical upper end of tap has an external screw thread to be connected with outer tube, and upper and lower side has blind hole one and blind hole two respectively; Adjacent internal thread is threaded with transition joint on the blind hole one of upper end, has an internal thread to be threaded with lower contact on the blind hole two of its lower end, has a untight annular sand setting passage to communicate with the blind hole two of lower end between the blind hole one of upper end and the cylindrical; Untight annulus segment have one radially slotted eye communicate with the bottom of upper end blind hole one, an adjacent cannelure built-in ring five on the external screw thread of transition joint lower end, its endoporus is up big and down small shoulder hole; Hole, big footpath built-in spring, there is an external screw thread its cylindrical upper end, an adjacent cannelure built-in ring three under the external screw thread; The endoporus lower end of valve bonnet has an internal thread to be connected with the external screw thread of transition joint upper end, and there is an inner convex platform center, adjacent one group of radial direction through hole or groove on the inner convex platform; There is a screw thread endoporus upper end; The upper end of sand cap is a frustum type, and the lower end is threaded with valve bonnet, and there are a taper seat or arc surface in valve seat endoporus upper end; Its cylindrical has a cannelure built-in ring two; Valve seat is inserted to the lower end of valve bonnet inner convex platform, and there is an outer lug boss cylindrical lower end of supporting seat, and top is inserted in the endoporus of valve seat; Valve ball is placed in the upper end of valve seat; There is an external screw thread cylindrical lower end of top connection, and the upper and lower side of outer tube has internal thread respectively, the inner adjacent respectively cannelure built-in ring one and sealing ring four of internal thread; Outer tube and the outside that is sleeved on sand cap, valve bonnet and transition joint after top connection is threaded; The lower end of outer tube is threaded with tap, and this connects back looping passage, and the circular passage communicates with the sand setting passage.

The beneficial effect of the utility model is: thoroughly solve the problem that valve ball is buried by sand, guarantee that the well-flushing passage is unimpeded, reduce the job execution repair rate.

Four, description of drawings:

Accompanying drawing 1 is the structural representation of the utility model.

Accompanying drawing 2 is the sectional view of the utility model tap.

In the accompanying drawing: 1-top connection, 2-outer tube, 3-sealing ring one, 8-sealing ring two, 10-sealing ring three, 12-sealing ring four; 13-sealing ring five, 17-sealing ring six, 4-sand cap, 5-valve bonnet, 6-valve ball, 7-valve seat; The 9-supporting seat, 11-spring, 14-transition joint, 15-tap, 16-sand setting runner, 18-lower contact, 19-radial direction through hole; The 20-inner convex platform, the 21-circular passage, 22-is slotted eye radially, 23-blind hole one, 24-blind hole two

Five, the specific embodiment:

Below in conjunction with accompanying drawing the embodiment of the utility model is done further elaboration:

The utility model is made up of top connection (1), outer tube (2), sealing ring one (3), sealing ring two (8), sealing ring three (10), sealing ring four (12), sealing ring five (13), sealing ring six (17), sand cap (4), valve bonnet (5), valve ball (6), valve seat (7), supporting seat (9), spring (11), transition joint (14), tap (15) and lower contact (18); The cylindrical upper end of tap (15) has an external screw thread to be connected with outer tube (2), and upper and lower side has blind hole one (23) and blind hole two (24) respectively, and the blind hole one (23) of upper end goes up adjacent internal thread and is threaded with transition joint (14); There is an internal thread to be threaded on the blind hole two (24) of its lower end with lower contact (18); Have a untight annular sand setting passage (16) to communicate between blind hole one (23) and the cylindrical of upper end with the blind hole two (24) of lower end, untight annulus segment have one radially slotted eye (22) communicate an adjacent cannelure built-in ring five (13) on the external screw thread of transition joint (14) lower end with the bottom of upper end blind hole one (23); Its endoporus is up big and down small shoulder hole; Big footpath hole built-in spring (11), there is an external screw thread its cylindrical upper end, an adjacent cannelure built-in ring three (10) under the external screw thread; The endoporus lower end of valve bonnet (5) has an internal thread to be connected with the external screw thread of transition joint (14) upper end; There is an inner convex platform (20) center, and inner convex platform (20) is gone up adjacent one group of radial direction through hole or groove (19), and the endoporus upper end has a screw thread to be connected with the external screw thread of sand cap (4) lower end; The upper end of sand cap (4) is a frustum type; Valve seat (7) endoporus upper end has a taper seat or arc surface, its cylindrical that one cannelure built-in ring two (8) is arranged, and valve seat (7) is inserted to the lower end of valve bonnet (5) inner convex platform (20); There is an outer lug boss cylindrical lower end of supporting seat (9); Its top is inserted in the endoporus of valve seat (7), and valve ball (6) is placed in the upper end of valve seat (7), and there is an external screw thread cylindrical lower end of top connection (1); The upper and lower side of outer tube (2) has internal thread respectively; The inner of internal thread is an adjacent cannelure built-in ring one (3) and sealing ring four (12) respectively, outer tube (2) and the outside that is sleeved on sand cap (4), valve bonnet (5) and transition joint (14) after top connection (1) is threaded, and the lower end of outer tube (2) is threaded with tap (15); This connects back looping passage (21), and circular passage (21) communicate with sand setting passage (16).

Claims

1. ball at the bottom of the sand setting formula; Form by top connection (1), outer tube (2), sealing ring one (3), sealing ring two (8), sealing ring three (10), sealing ring four (12), sealing ring five (13), sand cap (4), valve bonnet (5), valve ball (6), valve seat (7), supporting seat (9), spring (11) and transition joint (14); It is characterized in that: the cylindrical upper end of tap (15) has an external screw thread to be connected with outer tube (2); Upper and lower side has blind hole one (23) and blind hole two (24) respectively; Upper end blind hole one (23) goes up adjacent internal thread and is threaded with transition joint (14), has an internal thread to be threaded with lower contact (18) on its lower end blind hole two (24).

2. according to ball at the bottom of the said sand setting formula of claim (1); It is characterized in that: have a untight annular sand setting passage (16) to communicate between the blind hole one (23) of tap (15) upper end and the cylindrical with the blind hole two (24) of lower end, untight annulus segment have one radially slotted eye (22) communicate with the bottom of upper end blind hole one (23).