Summary of the invention
The purpose of this utility model is to provide a kind of slideway type sub-releasing axle plug, solve the hanging capacity existed in current bridging plug low, to give up and problem that pressure of giving up is high in advance.
The utility model is achieved through the following technical solutions: a kind of slideway type sub-releasing axle plug, comprise top connection, connector, upper center tube, fishing head, jump ring, seating nipple, upper joint sleeve, deblocking pin, give up, sliding pin, set piston, lock dog one, set pin, lock dog two, upper glue tube base, exterior central tube, lower center tube, packing element, spacer ring, lower rubber cylinder seat, upper centrum, sheath, righting slips, spring, hypocentrum, standby cap, lower contact, wherein, top connection is connected with connector, connector is connected to the upper end of upper center tube, top connection, the junction, upper end of connector and upper center tube is sealed by O type circle, the lower end of upper center tube is fixedly connected with lock dog one by sliding pin with the upper end of lower center tube, and lower center tube has pressure transmission hole, and lower end and lower contact are by screwed connection, fishing head is in the outside of upper center tube, on lower end is connected to gives up by deblocking pin, link outside the interior button of giving up and the top of lower center tube and connect, spring arm is arranged at the top of giving up, screw thread is had outside spring arm, give up to link in outer button on spring arm and seating nipple and connect, simultaneously by fishing head lower support, fix by deblocking pin, there is pawl the outside of seating nipple, the outside of seating nipple is upper joint sleeve, jump ring is had between seating nipple and upper joint sleeve, jump ring can be engaged mutually with the pawl of seating nipple outside, the bottom of upper joint sleeve and upper glue tube base screwed connection, upper glue tube base is fixed on lower center tube by lock dog two, seating nipple, give up, upper glue tube base and upper joint sleeve form a cavity, inside set piston, setting piston is fixed on upper glue tube base by setting pin, fetter lock dog one and lock dog two, the outside of lower center tube is exterior central tube, exterior central tube and upper glue tube base screwed connection simultaneously, the outside of exterior central tube, on have three packing elements and two spacer rings between glue tube base and lower rubber cylinder seat, lower rubber cylinder seat and upper centrum, by screwed connection, upper centrum, have righting slips between hypocentrum and sheath, righting slips has spring, and hypocentrum is connected with lower center tube, and the bottom of sheath connects standby cap, and the outer step constraint of lower contact is for cap and sheath, described upper center tube bottom outer wall has long slideway and short slideway, short slideway is obliquely installed and is communicated with into V-type with long slideway, long slideway bottom is directly run through bottom upper center tube, sliding pin end is placed in the short slideway of long slideway and short slideway, and can slide in long slideway and short slideway.
Further, described long slideway and short slideway are many groups, respectively along the evenly arrangement of upper center tube outer wall circumference.
Further, described long slideway and short slideway are three groups.
Further, described hypocentrum is connected by left-hand thread with lower center tube, simultaneously locked by safety pin.
Adopt the good effect of technique scheme: the utility model is avoided high pressure or large load put forward the drawback of cutting off pin and carrying out giving up, adopt large load fixing pin to hang, need not the power ramp principle of giving up, guarantee that release grappling puts in place, stop to give up in advance, improve water blockoff and shut-in well efficiency, avoid unnecessary waste.
Accompanying drawing explanation
Fig. 1 is structural representation one of the present utility model;
Fig. 2 is structural representation two of the present utility model;
Fig. 3 is the structural representation of upper center tube;
Fig. 4 be in Fig. 3 A-A to sectional elevation;
Fig. 5 is the outer wall tiling schematic diagram of upper center tube.
In figure, 1 top connection, 2 connectors, 3 upper center tubes, 4 fishing heads, 5 jump rings, 6 seating nipples, 7 upper joint sleeves, 8 deblocking pins, 9 give up, 10 sliding pins, 11 set piston, and 12 lock dogs one, 13 set pin, 14 lock dogs two, glue tube base on 15,16 exterior central tubes, 17 lower center tubes, 18 packing elements, 19 spacer rings, 20 lower rubber cylinder seats, centrum on 21,22 sheaths, 23 righting slips, 24 springs, 25 hypocentrums, 26 for cap, 27 lower contacts, 28 long slideways, 29 short slideways, 30 safety pins.
Detailed description of the invention
Below in conjunction with accompanying drawing, the technical solution of the utility model is described further, but should not be construed as restriction of the present utility model:
Fig. 1 is structural representation one of the present utility model, Fig. 2 is structural representation two of the present utility model, Fig. 3 is the structural representation of upper center tube in Fig. 1, Fig. 4 be in Fig. 3 A-A to sectional elevation, Fig. 5 is the outer wall tiling schematic diagram of upper center tube, as shown in the figure, a kind of slideway type sub-releasing axle plug, comprise top connection 1, connector 2, upper center tube 3, fishing head 4, jump ring 5, seating nipple 6, upper joint sleeve 7, deblocking pin 8, give up 9, sliding pin 10, set piston 11, lock dog 1, set pin 13, lock dog 2 14, upper glue tube base 15, exterior central tube 16, lower center tube 17, packing element 18, spacer ring 19, lower rubber cylinder seat 20, upper centrum 21, sheath 22, righting slips 23, spring 24, hypocentrum 25, standby cap 26, lower contact 27, wherein, top connection 1 is connected with connector 2, connector 2 is connected to the upper end of upper center tube 3, top connection 1, the junction, upper end of connector 2 and upper center tube 3 is sealed by O type circle.The lower end of upper center tube 3 is fixedly connected with lock dog 1 by sliding pin 10 with the upper end of lower center tube 17, and lower center tube 17 has pressure transmission hole, and lower end and lower contact 27 are by screwed connection.Fishing head 4 is in the outside of upper center tube 3, lower end is connected to by deblocking pin 8 gives up on 9, give up 9 interior button and lower center tube 17 top outside link and connect, give up 9 top have spring arm, screw thread is had outside spring arm, give up to link in outer button on 9 spring arms and seating nipple 6 and connect, simultaneously by fishing head 4 lower support, fix by deblocking pin 8.There is pawl the outside of seating nipple 6, the outside of seating nipple 6 is upper joint sleeves 7, jump ring 5 is had between seating nipple 6 and upper joint sleeve 7, jump ring 5 can be engaged mutually with the pawl of seating nipple 6 outside, the bottom of upper joint sleeve 7 and upper glue tube base 15 screwed connection, upper glue tube base 15 is fixed on lower center tube 17 by lock dog 2 14, seating nipple 6, give up 9, upper glue tube base 15 and upper joint sleeve 7 form a cavity, inside set piston 11, setting piston 11 is fixed on upper glue tube base 15 by setting pin 13, fetter lock dog 1 and lock dog 2 14 simultaneously, the outside of lower center tube 17 is exterior central tubes 16, exterior central tube 16 and the screwed connection of upper glue tube base 15.The outside of exterior central tube 16, on have three packing elements 18 and two spacer rings 19 between glue tube base 15 and lower rubber cylinder seat 20.Lower rubber cylinder seat 20 and upper centrum 21 are by screwed connection, upper centrum 21, between hypocentrum 25 and sheath 22, there is righting slips 23, righting slips 23 there is spring 24, hypocentrum 25 is connected with lower center tube 17, the bottom of sheath 22 connects standby cap 26, the standby cap 26 of lower contact 27 outer step constraint and sheath 22.Described upper center tube 3 bottom outer wall has long slideway 28 and short slideway 29, short slideway 29 is obliquely installed and is communicated with into V-type with long slideway 28, long slideway 28 bottom is directly run through bottom upper center tube 3, sliding pin 10 end is placed in the short slideway 29 of long slideway 28 and short slideway 29, and can slide in long slideway 28 and short slideway 29.The present invention changes existing sub-releasing axle plug needs to cut off pin mode when giving up, sliding pin is placed in the short slideway of long slideway and short slideway, realize giving up in the conversion of slideway by sliding pin, avoid high pressure or large load put forward the drawback of cutting off pin and carrying out giving up.
Further, convenient during in order to use, described long slideway 28 and short slideway 29 are many groups, respectively along the evenly arrangement of upper center tube 3 outer wall circumference.Concrete, described long slideway 28 and short slideway 29 are three groups.
In order to prevent from giving up unsuccessfully, the situation that cannot trip out bridging plug occurs, and described hypocentrum 25 is connected by left-hand thread with lower center tube 17, simultaneously locked by safety pin 30.When lower center tube rotates forward, can safety pin be cut off, hypocentrum and lower center tube be opened, unfreezing.
When slideway type sub-releasing axle plug is gone into the well, top connection 1 is connected to 27/8〃on oil pipe pin thread, lower contact 27 connects other downhole tool, down to projected depth in well, just suppress from oil pipe, under the effect of the pressure, liquid enters from the pressure transmission hole of lower center tube 17, it is up that promotion sets piston 11, cuts off and set pin 13, under pressure, while upper glue tube base 15 is descending, lock dog 2 14 is upspring; Now lock dog 1 also loses constraint and upsprings, and the suspending weight that pressure and this instrument bear all drops on sliding pin 10; Upper glue tube base 15 continues descending, promote exterior central tube 16, three packing elements 18, two spacer rings 19, lower rubber cylinder seat 20 is simultaneously descending with upper centrum 21, under the effect of thrust, the conical surface of upper centrum 21 and hypocentrum 25 promotes righting slips 23 Compress Spring 24 and expands outwardly, and is anchored on casing wall.Go up glue tube base 15 under the effect of the pressure and exterior central tube 16 continues descending compression three packing elements 18, make packing element 18 seal oil sets annular space.While upper glue tube base 15 is descending, drive upper joint sleeve 7 descending, jump ring 5 between upper joint sleeve 7 and seating nipple 6 is also along the pawl up-downgoing on seating nipple 6 outer wall, when, packing element 18 firm in righting slips 23 grappling has compressed, jump ring 5 is stuck on the pawl of seating nipple 6 outer wall, now complete the task of grappling and release, oil pipe stops just suppressing.
After completing grappling release, tubing string is transferred exploration anchoring effect, after confirmation, upper lifting pipe post realizes giving up.Implementation process is when tubing string transfers exploration, the sliding pin 10 be arranged in the short slideway of upper center tube 3 enters when transferring in long slideway, and upper lifting pipe post related upper center tube 3 is up, and sliding pin 10 is from the slippage downwards always of the long slideway central tube 3, upper center tube proposes, and completes and gives up.
When operation needs to salvage slideway type sub-releasing axle plug again, Special fishing tool is used to connect 27/8〃oil pipe G.I.H, Special fishing tool and fishing head collide stuck, and upper lifting pipe post completes deblocking, salvaging task.Implementation process is that fishing tool and fishing head 4 collide stuck, during upper lifting pipe post, fishing head 4 is up cuts off deblocking pin 8, fishing head 4 continues up, outer step on fishing head 4 is stuck on the interior step of seating nipple 6, now give up 9 the spring arm on top when there is no fishing head 4 bottom inner support, inside contraction, the spring of giving up on 9 is buckled outward and is lost kneading with the interior junction of buckleing of seating nipple 6, 9 beginnings of giving up are descending, related lower center tube 17, hypocentrum 25, sheath 22, upper centrum 21 is descending, now righting slips 23 loses inner support, return unfreezing is shunk under spring 24 acts on, packing element 18 shrinks return under flexible effect, thus complete unfreezing, the task of deblocking.
After grappling has discharged, when cannot complete give up, upper lifting pipe post is to suspending weight, and rotate forward, now righting slips 23 is stuck on casing wall, upper centrum 21, hypocentrum 25 and sheath 22 and top accessory all motionless, only have upper center tube 3, lower center tube 17 and lower contact 27 to rotate forward along with tubing string, now cut off safety pin 30, the left-hand thread junction of hypocentrum 25 with lower center tube 17 is opened, reach the object of unfreezing deblocking, safety trips out tubing string.
The utility model is avoided high pressure or large load put forward the drawback of cutting off pin and carrying out giving up, adopt large load fixing pin to hang, need not the power ramp principle of giving up, guarantee that release grappling puts in place, stop to give up in advance, improve water blockoff and shut-in well efficiency, avoid unnecessary waste.