CN2368977Y - Rotary wheel style downhole timing detaching/attaching device - Google Patents

Abstract

The utility model discloses a hanging disconnection device used for suspending a down-hole testing instrument. The utility model has the main technical characteristic that the device uses a mechanical clock to open a linking switch on a control body at definite times and uses a rolling wheel to replace a clamping block on an original suspending body. When the mechanical clock opens the linking switch at definite times, a switch hook releases a salvaging head on the upper end of the suspending body. The suspending body is disconnected from the control body, a control switch of the rolling wheel is bounced off to release a tension spring controlled by the control switch of the rolling wheel. The rolling wheel is upward pulled to a maximum position under the function of the tension spring. The testing instrument is suspended on the inner wall of an oil pipe to realize positioning measurement. The utility model has the advantages of small size, convenient operation, reliable and accurate position and no downward sliding phenomenon. After one-site trials, the success ratio can be 98%.

Description

The roller type down-hole is detaching/attaching device regularly

The utility model relates to a kind of downhole testing aid, especially a kind of detachable hanging device that is used to hang the downhole testing instrument.

In the oil field, during data such as admission downhole temperature, pressure, need be put into preposition in the pit shaft to tester with detaching/attaching device.Existing down-hole detaching/attaching device is made up of control volume and suspension body, and its control volume is to realize release-push by the bump of percussion hammer, thereby two fixture blocks that symmetry is installed on the control suspension body open, and realize the hanging function of down-hole.During use, detaching/attaching device and the tester that links to each other with it be desired depth under the lower going-into-well together, be lowered to the percussion hammer bump and excite the control volume switch by well head, after switch opens, fixture block on the suspension body opens, thereby snap on the inwall of down-hole oil tube, the control volume on top separates with suspension body simultaneously, proposes well head.The defective of this hanger is when the borehole wall has dirt, dead oil, the fixture block borehole wall of losing control of one's feelings; Owing to adopting bump to excite the control volume switch to discharge suspension body, cause the whole decline of instrument group simultaneously, cause depth localization that error is arranged, the data that records is inaccurate, and salvages difficulty; This device external diameter is bigger in addition, and length is longer, is unfavorable for the well head operation.

It is little that the purpose of this utility model provides a kind of volume, easy and simple to handle, easy to control, and firm detachable hanging device is hung in accurate positioning, thereby reduce labour intensity, improves the test success rate.

To achieve these goals, this device adopts mechanical watch regularly to open switch on the control volume, substitutes fixture block on the suspension body with roller.Concrete technical scheme is: the couple axle of mechanical watch links to each other with switch wheel on the control volume, control its rotation time, thereby realize that switch hook regularly flicks, the suspension body fishing head that release is controlled by this switch hook, after suspension body is released, break away from control volume, roller gauge tap on the suspension body is flicked at this moment, release is by the extension spring of its control, the roller that the suspension body bilateral symmetry is installed is under the effect of extension spring, inclined-plane in the suspension body of upper edge by tension to maximum position, thereby make whole suspension body and related instrument together be suspended on the inwall of pit shaft oil pipe, realize location survey.The utility model is owing to adopted mechanical watch timing controlled mechanism, replaced fixture block with roller, this device that makes is more easy to control, length and diameter are all little than original device, and control and suspended portion are operated simple and flexible more, and reaction is quick, it is firm, accurate to locate, do not glide, through on-the-spot on probation, success rate reaches 98%.Use this device, both alleviated labour intensity, saved cost again, have tangible economic benefit.

Fig. 1, roller type down-hole be the detaching/attaching device structural representation regularly.

Fig. 2, roller type down-hole be detaching/attaching device partial structurtes schematic diagram regularly.

Describe implementation process of the present utility model in detail below in conjunction with accompanying drawing, as shown in Figure 1 and Figure 2, the utility model is before going into the well, extension spring 11 is pinned by roller gauge tap 14, be in extended state, roller 9 closures are in suspension body 3 inclined-planes at this moment, and switch hook 7 is pinned the fishing head of suspension bodies 3 upper ends; The couple axle of mechanical watch 5 links to each other with switch wheel 6, and switch wheel 6 sides have groove, constitutes a gauge tap with the fin of switch hook 7 upper ends; The rotational angle of by-pass cock wheel 6 withstands the fin on switch hook 7 tops with non-groove part, reserves the time of clock then.After treating that instrument connector 4 connects good tester, with steel wire it is sent into the precalculated position, down-hole, clock drives switch wheel 6 and rotates, to the scheduled time, the fin on switch hook 7 tops falls in the groove on switch wheel 6 sides, this moment, the switch hook lower end flicked under the effect of compression spring 1, discharged the fishing head of suspension body 3.Owing to carry on the weight of instrument self or the control section, suspension body 3 breaks away from control volume 2, roller gauge tap 14 upper ends lost and supported and the lower end is compressed spring 13 and opens this moment, extension spring 11 is released, and pulling rolling wheel support arm 10, roller 9 move up along the inclined-plane, and under the effect on inclined-plane, roller 9 reaches maximum position, it is big to stuck with tube wall 8 to rise, thereby is suspended on this position, realizes the purpose of instrument in down-hole thermometric, pressure measurement.Subsequently control section is proposed well head, wait test with fishing device suspension body and instrument to be pulled out again after finishing.Suspension body spurs rolling wheel support arm 10 and roller 9 downwards earlier after taking out from the down-hole, pins extension spring 11 with roller gauge tap 14, and this moment, roller 9 closures were in the inclined-plane; Fishing head with the suspension body upper end inserts in the control volume then, pins suspension body 3 with switch hook 7, and the rotational angle of reconciling switch wheel 6 withstands the fin of switch hook 7 upper ends, and this sample device returns to original state again, can reuse.

Claims (3)

1, a kind of roller type down-hole timing detaching/attaching device, form by control volume (2) and suspension body (3), it is characterized in that control volume adopts mechanical watch (5) control, the couple axle of clock links to each other with switch wheel (6), switch wheel (6) side has a groove, the fin of switch hook (7) upper end is withstood by the non-groove part of switch wheel (6), and the fishing head of suspension body (3) upper end is pinned in the lower end, and switch hook (7) constitutes a coupled switch with switch wheel (6); Suspension body (3) bilateral symmetry is equipped with roller (9), and roller (9) can move up and down along the inclined-plane in the suspension body both sides under the effect of extension spring (11), and spring (11) is pinned by roller gauge tap (14), is in extended state; The gauge tap controlled body in upper end (2) supports.

2, roller type down-hole timing detaching/attaching device as claimed in claim 1, it is characterized in that when the controlled switch of spring (11) (14) pins roller (9) is closed in the inclined-plane, when spring (11) when being released, move to rise on the roller (9) and open, be positioned at the extreme higher position on inclined-plane.

3, roller type down-hole timing detaching/attaching device as claimed in claim 1 is characterized in that open the gauge tap lower end when roller gauge tap (14) upper end loses support, and extension spring (11) is released.

Images