CN205778715U - One-way hydraulic formula is exempted to bore fraclional well cementing device - Google Patents

Abstract

The utility model discloses a kind of reliable in quality to meet the one-way hydraulic formula of environmental requirement and exempt to bore fraclional well cementing device, including: center body, lower end outside at center body is provided with rotation centralizer body, the external side of center sleeve rotating centralizer body lower end is provided with rotation centralizer body stop collar and stop screw, sliding sleeve and note ash cap it is provided with outside the middle part of center body, the external side of center sleeve in sliding sleeve upper end is provided with the spacing flange collar of sliding sleeve, sliding sleeve shear pin it is provided with between sliding sleeve and center body, sliding sleeve is provided with sliding sleeve moving pin, center body is provided with the shifting chute cooperated with sliding sleeve moving pin, unlatching pin it is provided with between note ash cap and sliding sleeve.

Description

One-way hydraulic formula is exempted to bore fraclional well cementing device

Technical field

This utility model relates to a kind of cementing equipment, particularly relates to a kind of one-way hydraulic formula and exempts to bore fraclional well cementing device.

Background technology

Cementing unit is the key component of well cementation, is mainly used in well cementing process, alleviates difficulty and the ground of disposable well cementation The excessive head of liquid that layer can not bear, owing to well depth upper and lower temperature difference is big so that be difficult in concrete grey injection process during well cementation Regulation, well cementation can not reach desired effects.Owing to mid-late oilfield development is more and more higher to environmental requirement, to the control of cost also Increasingly tighter, therefore the highest to the requirement of cementing unit requirement, existing cementing unit can not meet use Requirement, is therefore badly in need of designing a kind of novel cementing unit.

Utility model content

Technical problem to be solved in the utility model is: provide a kind of reliable in quality to meet the one-way hydraulic of environmental requirement Formula is exempted to bore fraclional well cementing device.

In order to solve above-mentioned technical problem, the technical solution adopted in the utility model is: it is solid that one-way hydraulic formula exempts to bore classification Well device, including: center body, the lower end outside at described center body is provided with rotation centralizer body, in described rotation The external side of center sleeve of centralizer body lower end is provided with rotation centralizer body stop collar and stop screw, at described center body It is provided with sliding sleeve and note ash cap outside Zhong Bu, the external side of center sleeve of described sliding sleeve upper end is provided with sliding sleeve spacing Flange collar, is provided with sliding sleeve shear pin between described sliding sleeve and center body, is provided with sliding sleeve on described sliding sleeve Moving pin, is provided with, on described center body, the shifting chute cooperated with sliding sleeve moving pin, described note ash cap with It is provided with unlatching pin between sliding sleeve letter, the center body within described note ash cap is provided with and center tubular body The note ash mouth that cavity is connected, is provided with one-way slip, at described center sleeve between described sliding sleeve and center body It is provided with the lock ring cooperated with one-way slip on body, between described sliding sleeve and center body, is provided with the first sealing Part, is provided with the second sealing member between described note ash cap and center body, arranges between described note ash cap and sliding sleeve There is the 3rd sealing member, in the cavity of described center tubular body, be provided with the weight valve cooperated with it, described gravity The structure of valve includes: valve body, valve seat, bonnet, and bottom flange, is respectively arranged with in valve body, valve seat, bonnet, and bottom flange Passage, is provided with spring and spheroid in described valve body；Between the inwall of the outside of described valve body and described center body Being provided with the 4th sealing member, matches with described bottom flange in the lower end of described sliding sleeve moving pin.

The utility model has the advantages that: above-mentioned one-way hydraulic formula is exempted to bore fraclional well cementing device, meets environmental requirement, increasingly Height, construction cost is low, reliable in quality, compact conformation；Use one-way sliding, utilize on the union body of classification note ash cementing unit The one-way slip in face is consistent, in unidirectional motion with lock ring interlocking and slips teeth directional；Use hydraulic pressure to control formula, utilize well The size of mouth note ash pressure controls to note the overall process of the opening and closing of ash mouth；Use the weight valve of unidirectional design, it is ensured that weight Power valve overcomes spring to automatically open up under gravity, and in pit shaft, automatic liquid returns out, and weight valve falls shaft bottom voluntarily；Tension is held Pressure energy power is strong, and applicable gradient is less than 30 degree inclined shaft operations；Use one-way hydraulic formula to exempt to bore fraclional well cementing device not only to reduce Strata pressure, under effective protecting field, shallow seated groundwater is the most contaminated, improves well cementation efficiency simultaneously.

Accompanying drawing explanation

Fig. 1 is the structural representation that this utility model one-way hydraulic formula exempts to bore fraclional well cementing device.

Fig. 2 is the structural representation that this utility model one-way hydraulic formula exempts to bore fraclional well cementing device unlatching note ash state.

Fig. 3 is the structural representation that this utility model one-way hydraulic formula exempts to bore fraclional well cementing device well cementation closed mode.

Fig. 4 is the structural representation that this utility model one-way hydraulic formula exempts to bore fraclional well cementing device weight valve slip-down state.

Fig. 5 is that this utility model one-way hydraulic formula exempts to bore the structural representation of weight valve in fraclional well cementing device.

In figure: 1, center body, 2, rotate centralizer body, 3, rotate centralizer body stop collar, 4, stop screw, 5, sliding sleeve Cylinder, 6, note ash cap, 7, the spacing flange collar of sliding sleeve, 8, sliding sleeve shear pin, 9, sliding sleeve moving pin, 10, shifting chute, 11, open pin, 12, cavity, 13, note ash mouth, 14, one-way slip, 15, lock ring, the 16, first sealing member, the 17, second sealing member, the 18, the 3rd seals Part, 19, weight valve, 191, valve body, 192, valve seat, 193, bonnet, 194, bottom flange, 195, passage, 196, spring, 197, ball Body, the 20, the 4th sealing member.

Detailed description of the invention

Particular content of the present utility model is described in detail below in conjunction with the accompanying drawings with specific embodiment.

As it is shown in figure 1, one-way hydraulic formula is exempted to bore fraclional well cementing device, including: center body 1, at described center sleeve The lower end outside of body 1 is provided with rotation centralizer body 2, is provided with rotation outside the center body 1 of described rotation centralizer body 2 lower end Turn centralizer body stop collar 3 and stop screw 4, outside the middle part of described center body 1, be provided with sliding sleeve 5 and note ash cap 6, It is provided with the spacing flange collar of sliding sleeve 7, in described sliding sleeve 5 and center outside the center body 1 of described sliding sleeve 5 upper end It is provided with sliding sleeve shear pin 8 between body 1, described sliding sleeve 5 is provided with sliding sleeve moving pin 9, at described center sleeve It is provided with the shifting chute 10 cooperated with sliding sleeve moving pin 9 on body 1, is provided with between described note ash cap 6 and sliding sleeve 5 Open pin 11, the center body 1 within described note ash cap 6 is provided with and is connected with the cavity 12 within center body 1 Logical note ash mouth 13, is provided with one-way slip 14, at described center body 1 between described sliding sleeve letter 5 and center body 1 On be provided with the lock ring 15 cooperated with one-way slip 14, between described sliding sleeve 5 and center body 1, be provided with first Sealing member 16, is provided with the second sealing member 17 between described note ash cap 6 and center body 1, at described note ash cap 6 and sliding sleeve It is provided with the 3rd sealing member 18 between cylinder 5, is provided with in the cavity 12 within described center body 1 and to cooperate with it Weight valve 19, as it is shown in figure 5, the structure of described weight valve 19 includes: valve body 191, valve seat 192, bonnet, 193 and bottom flange 194, in valve body 191, valve seat 192, bonnet, 193 and bottom flange 194, it is respectively arranged with passage 195, in described valve body 191 It is provided with spring 196 and spheroid 197；It is provided with between the inwall of the outside of described valve body 191 and described center body 1 Four sealing members 20, match with described bottom flange 194 in the lower end of described sliding sleeve moving pin 9.

It is for injecting cement to the annular space between well and center body 1 that one-way hydraulic formula is exempted to bore fraclional well cementing device A kind of device of the operation process of ash, carries out second time again and cements the well when reaching fixing height after once having cemented the well.Unidirectional Fluid pressure type exempts from brill fraclional well cementing device, is passage in once well cementation, crucial for secondary well cementation overall process.

As it is shown in figure 1, center body 1 is connected with wellhead casing pipe, utilizes spiral centralizer body 2 to carry out righting, work as one-level Just carrying out secondary well cementation after having cemented the well, when being to utilize one-level well cementing impact pressure during the casing pressure of produced 16-21MPa, moment cuts The unlatching pin 11 that broken now is noted ash cap 6 and is displaced downwardly to state as shown in Figure 2, is now pumped into concrete grey from well head, and concrete grey is from note Ash mouth 13 enters cavity 12 and bore hole annulus, and liquid returns out from bore hole annulus and stops after cement mortar and isolation slurry have been broken in two grades of well cementation Only suppressing, now put into weight valve 19 in center body 1, weight valve 19 relies on self gravitation to sink down into sliding sleeve moving pin At 9, when now boosting to 4-7MPa casing pressure in center body 1, weight valve 19 pressurized moves down and promotes sliding sleeve moving pin 9 to move down, Now sliding sleeve shear pin 8 is cut off, sliding sleeve 5 built with one-way slip 14, the sliding sleeve 5 lock ring 15 along center body 1 Direction is displaced downwardly to dead point, as it is shown on figure 3, now close note ash mouth 13.Mean when stopping note ash after note ash mouth 13 is closed Secondary well cementation is complete, and when now continuing to boost to 13-15MPa casing pressure, weight valve 19 pressurized moves down promotion sliding sleeve moving pin 9 cut off, owing to 1 time internal diameter of center body is more than sealing position, so weight valve 19 moves down now center at the gravity of self Stopping in union body 1 suppressing, the spheroid 197 in weight valve 19 forces spring 196 to compress because of valve body deadweight and bottom pressure, opens Passage 195 in weight valve 19, it is ensured that in center body 1, mud exchanges during weight valve 19 is descending, as shown in Figure 4, Weight valve 19 falls into shaft bottom voluntarily.

Claims (1)

1. one-way hydraulic formula is exempted to bore fraclional well cementing device, including: center body (1), it is characterised in that: at described center sleeve The lower end outside of body (1) is provided with rotation centralizer body (2), center body (1) outside in described rotation centralizer body (2) lower end It is provided with rotation centralizer body stop collar (3) and stop screw (4), outside the middle part of described center body (1), is provided with cunning Sleeve (5) and note ash cap (6), center body (1) outside in described sliding sleeve (5) upper end is provided with the spacing flange collar of sliding sleeve (7), between described sliding sleeve (5) and center body (1), it is provided with sliding sleeve shear pin (8), described sliding sleeve (5) sets It is equipped with sliding sleeve moving pin (9), described center body (1) is provided with the shifting cooperated with sliding sleeve moving pin (9) Dynamic groove (10), is provided with unlatching pin (11) between the grey cap (6) of described note and sliding sleeve (5), in described note ash cap (6) inside Note ash mouth (13) that the cavity (12) internal with center body (1) is connected it is provided with, in described cunning on center body (1) It is provided with one-way slip (14) between sleeve (5) and center body (1), described center body (1) is provided with single The lock ring (15) cooperated to slips (14), is provided with the first sealing between described sliding sleeve (5) and center body (1) Part (16), is provided with the second sealing member (17) between described note ash cap (6) and center body (1), described note ash cap (6) And it is provided with the 3rd sealing member (18) between sliding sleeve (5), is provided with in the cavity (12) that described center body (1) is internal The weight valve (19) cooperated with it, the structure of described weight valve (19) including: valve body (191), valve seat (192), bonnet, (193) and bottom flange (194), it is respectively arranged with in valve body (191), valve seat (192), bonnet, (193) and bottom flange (194) Passage (195), is provided with spring (196) and spheroid (197) in described valve body (191)；The outside of described valve body (191) with The 4th sealing member (20), the lower end of described sliding sleeve moving pin (9) and institute it is provided with between the inwall of described center body (1) State bottom flange (194) to match.