CN205330560U - Fracturing string safety trip device - Google Patents

Abstract

The utility model provides a rope -forming is milled out physically in upper portion of fracturing string safety trip device hangs the pipe in the strip body overhang hang outward the pipe inside hang the circular bead on, install sealing washer, well sealing washer, lower seal circle on the lock tube, spring suit on the lock tube, the lock tube pack into outer hang intraductal, in the outer wall of lock tube blocks, the lower part of top connection with hang the upper portion of managing outward and be connected, there is a slot on the upper portion of lock tube, in a part of top connection of packing into of slot, hang the pipe outward and link together by the pinning, the upper seal circle is in on the spring, well sealing washer is in between spring and the pinning, hang intraductally in insert the lower part of lock tube, the clearance that the lock tube hung in and between the pipe is sealed by the lower seal circle, it mills out under the strip body to hang the upper portion of pipe in the lower seal circle is in, the interior guan shangkai of hanging there is the UNICOM groove, installation sliding sleeve upper seal circle on the sliding sleeve, sliding sleeve lower seal circle, in covering, hangs the sliding sleeve at the UNICOM groove on the pipe, the sliding sleeve is fixed by the sliding sleeve shear pin.

Description

A kind of fracturing string safety trip device

Technical field

This utility model is a kind of instrument on oil field compression fracture operating tool string, is made its tubing string and fracturing tool safe escape for fracturing string after card, specifically a kind of fracturing string safety trip device。

Background technology

During oil field compression fracture construction, fracturing propping agents are squeezed in fracturing tool, proppant is generally special sand particles, sand grains is easily accessible in the gap of instrument or buries fracturing tool, make its construct terminate after can not disengage with fracturing string, fracturing string cannot propose in well so that it is cannot be carried out next step well workover and goes into operation。After producing this accident, being usually at present and break tubing string, then carry out segmental salvage process, this way job step is many, construction complexity, and the well workover time is long, and workover cost is high, and oil-water well can not be gone into operation in time, produces great economic loss。In order to avoid above-mentioned accident occurs, oil field takes the technical measures in the upper and lower safety joint of fracturing tool, but by the impact of material and operation, the poor reliability of safety joint, it is easy to cut off in way of going into the well and make to go into the well unsuccessfully。

Summary of the invention

The purpose of this utility model is a kind of fracturing string safety trip device of design so that it is when fracturing string is by card, it is possible to fracturing string and fracturing tool can safety trip, overcome above-mentioned Problems existing, reduce economic loss。

The purpose of this utility model is achieved in that and includes top connection, lock tube, upper sealing ring, spring, outer suspended tubes, middle sealing ring, pinning, lower seal, sealing ring on sliding sleeve, sliding sleeve, sliding sleeve lower seal, interior suspended tubes, sliding sleeve shear pin, the top milling of interior suspended tubes is split into bar body, and described bar body is suspended on the suspension shoulder of the inside of outer suspended tubes, and described suspension shoulder is taper surface, and lock tube is installed sealing ring, middle sealing ring, lower seal, spring housing is contained on lock tube, and lock tube loads in outer suspended tubes, the outer wall of lock tube blocks the bar body that the top milling of interior suspended tubes is opened, making it not shrink so that it is can not shrink, the bottom of top connection is connected with the top of outer suspended tubes, slot is arranged at the top of lock tube, a part for described slot loads in top connection, and the upper surface of spring is supported on lock tube, and the lower surface of spring is supported in the inner circular bead of outer suspended tubes, outer suspended tubes with linked together by pinning, upper sealing ring, middle sealing ring seals the gap between outer suspended tubes and lock tube, upper sealing ring is on spring, middle sealing ring is between spring and pinning, the bottom of lock tube is inserted in interior suspended tubes, gap between lock tube and interior suspended tubes is sealed by lower seal, lower seal is in the top milling of interior suspended tubes and opens under bar body, and interior suspended tubes has communication groove, and sliding sleeve is installed sealing ring on sliding sleeve, sliding sleeve lower seal, sliding sleeve is arranged in interior suspended tubes, and sliding sleeve covers the communication groove in interior suspended tubes, and on sliding sleeve, sealing ring is on described communication groove, and sliding sleeve lower seal is under described communication groove, and sliding sleeve is fixed by sliding sleeve shear pin。

The beneficial effects of the utility model are: sliding sleeve encloses tubing string, pitching can also suppress and remove sliding sleeve and make fracturing string be opened to carry out separate stratum fracfturing construction, if pressing crack construction terminates the instrument of rear bottom by card, pinning can be interrupted by hydraulic pressure, spring promotes the up constraint losing the bar body that internal suspended tubes top milling is opened of lock tube, described bar body is made to shrink, outer suspended tubes and interior suspended tubes disengage under upper lifting force effect, realize tubing string to release by card state, therefore, this utility model can reach the order of invention, avoid the problem that presently, there are, tubing string disengages reliable, reduce work operations amount, construction is simple, workover cost is low, there is significant economic benefit。

Accompanying drawing explanation

Fig. 1 is the installation diagram of this utility model embodiment。

Detailed description of the invention

Below in conjunction with accompanying drawing 1, this utility model embodiment is illustrated。

As seen from the figure, embodiment of the present utility model includes top connection 1, lock tube 2, upper sealing ring 3, spring 4, outer suspended tubes 5, middle sealing ring 6, pinning 7, lower seal 8, sealing ring 9 on sliding sleeve, sliding sleeve 11, sliding sleeve lower seal 12, interior suspended tubes 13, sliding sleeve shear pin 14, the top milling of interior suspended tubes 13 is split into bar body, described bar body is suspended on the suspension shoulder of the inside of outer suspended tubes 5, described suspension shoulder is taper surface, radial component can be produced, lock tube is installed sealing ring 3, middle sealing ring 6, lower seal 8, spring 4 is sleeved on lock tube 2, lock tube 2 loads in outer suspended tubes 5, the outer wall of lock tube 2 blocks the bar body that the top milling of interior suspended tubes 13 is opened, make it suffer restraints can not shrink, the bottom of top connection 1 is connected with the top of outer suspended tubes 5, slot is arranged at the top of lock tube 2, for transmitting pressure, a part for described slot loads in top connection 1, avoid foreign material to enter in annular space and affect component actuation, the upper surface of spring 4 is supported on lock tube 2, the lower surface of spring 4 is supported in the inner circular bead of outer suspended tubes 5, elastic force can be produced when making it with lock tube 2 action, outer suspended tubes 5 with linked together by pinning 7, upper sealing ring 3, middle sealing ring 6 seals the gap between outer suspended tubes 5 and lock tube 2, upper sealing ring 3 is on spring 4, middle sealing ring 6 is between spring 4 and pinning 7, make lock tube 2 can produce downward axial force under pressure, the bottom of lock tube 2 is inserted in interior suspended tubes 13, gap between lock tube 2 and interior suspended tubes 13 is sealed by lower seal 8, lower seal 8 is in the top milling of interior suspended tubes 13 and opens under bar body, interior suspended tubes 13 has communication groove 10, pressure break agent is injected during for pressure break, sliding sleeve 11 is installed sealing ring 9 on sliding sleeve, sliding sleeve lower seal 12, sliding sleeve 11 is arranged in interior suspended tubes 13, sliding sleeve 11 covers the communication groove 10 in interior suspended tubes 13, on sliding sleeve, sealing ring 9 is on described communication groove 10, sliding sleeve lower seal 12 is under described communication groove 10, can be in airtight every pressure condition with outside in right to use inside, sliding sleeve 11 is fixed by sliding sleeve shear pin 14。

Sliding sleeve 11 encloses tubing string, pitching can also suppress and make sliding sleeve shear pin 14 remove sliding sleeve 11 after being interrupted, make fracturing string be opened and carry out separate stratum fracfturing construction, if pressing crack construction terminates the instrument of rear bottom by card, can interrupting pinning 7 by hydraulic pressure, spring 4 promotes the up constraint losing the bar body that internal suspended tubes 13 top milling is opened of lock tube 2, makes described bar body shrink, outer suspended tubes 5 disengages under upper lifting force effect with interior suspended tubes 13, it is achieved tubing string releases by card state。

Claims (1)

1. a fracturing string safety trip device, including top connection (1), lock tube (2), upper sealing ring (3), spring (4), outer suspended tubes (5), middle sealing ring (6), pinning (7), lower seal (8), sealing ring (9) on sliding sleeve, sliding sleeve (11), sliding sleeve lower seal (12), interior suspended tubes (13), sliding sleeve shear pin (14), it is characterized in that: the top milling of interior suspended tubes (13) is split into bar body, described bar body is suspended on the suspension shoulder of the inside of outer suspended tubes (5), described suspension shoulder is taper surface, lock tube (2) is installed sealing ring (3), middle sealing ring (6), lower seal (8), spring (4) is sleeved on lock tube (2), lock tube (2) loads in outer suspended tubes (5), the outer wall of lock tube (2) blocks the bar body that the top milling of interior suspended tubes (13) is opened, it is made not shrink, the bottom of top connection (1) is connected with the top of outer suspended tubes (5), slot is arranged at the top of lock tube (2), a part for described slot loads in top connection (1), the upper surface of spring (4) is supported on lock tube (2), the lower surface of spring (4) is supported in the inner circular bead of outer suspended tubes (5), outer suspended tubes (5) with linked together by pinning (7), upper sealing ring (3), middle sealing ring (6) seals the gap between outer suspended tubes (5) and lock tube (2), upper sealing ring (3) is on spring (4), middle sealing ring (6) is between spring (4) and pinning (7), the bottom of lock tube (2) is inserted in interior suspended tubes (13), gap between lock tube (2) and interior suspended tubes (13) is sealed by lower seal (8), lower seal (8) is in the top milling of interior suspended tubes (13) and opens under bar body, interior suspended tubes (13) has communication groove (10), sliding sleeve (11) is upper installs sealing ring (9) on sliding sleeve, sliding sleeve lower seal (12), sliding sleeve (11) is arranged in interior suspended tubes (13), sliding sleeve (11) covers the communication groove (10) in interior suspended tubes (13), on sliding sleeve, sealing ring (9) is on described communication groove (10), sliding sleeve lower seal (12) is under described communication groove (10), sliding sleeve (11) is fixed by sliding sleeve shear pin (14)。