CN206299360U - A kind of throw in catcher - Google Patents

Abstract

The utility model is related to oil field eccentric water injection when zonal testing is carried out for the instrument of pulling Underwell packet apparatus, specially a kind of throw in catcher, including throw in catcher main body, rope socket and reverse taper are connected in the upper and lower side of throw in catcher main body, axial prong and guide grab are connected with throw in catcher main body, axial prong and guide grab are adjusted by the cam mechanism being arranged in throw in catcher main body, and axial prong is arranged on the lower end of guide grab, and axial prong and guide grab are symmetrical arranged relative to throw in catcher main body.Relative to prior art, the utility model is using axial prong and guide grab relative to the symmetrically arranged scheme of throw in catcher main body, suitable for minor-diameter eccentric water distributer, when injection well downhole flow regulator is entered, after the axial prong of lower section passes through, in the case where power is big, the symmetrically arranged axial prong in top can be stuck in injection well downhole flow regulator, will not directly pass through, improve the success rate of throw in catcher.

Description

A kind of throw in catcher

Technical field

The utility model is related to oil field eccentric water injection when zonal testing is carried out for the instrument of pulling Underwell packet apparatus, Specially a kind of throw in catcher.

Background technology

At present, eccentric injection mandrel conventional both at home and abroad is the well that layered quantitative water filling is carried out according to oil reservoir difference water absorbing capacity One of lower instrument.During normal water filling, the rubber tube of packer is in open configuration, and oil reservoir is divided into some water filling intervals.Each note Blanking plug in water layer section, a diameter of to be seated in the inclined hole of seating nipple main body by the step of supporter, cam is stuck in inclined hole top and expands Position is opened, the upper and lower road packings of Liang Zu tetra- of blanking plug seal inclined hole fluid hole.Injection water goes out liquid through filter screen by water nozzle, seal section After groove, inclined hole fluid hole enter oil pipe annular space, target zone is injected.Layered waterflooding quantity is controlled by tap diameter size.Such as It was found that tap diameter is improper, can at any time be changed with pulling and running tool.But, the hanging pulling and running tool for using at present exist as Lower problem：

1. hanging pulling and running tool axial prong is sealed by cam latch mechanism, and it is between cam surface and axial prong front end face Friction force closure.This sealed instrument that easily causes, due to the collision between instrument and tube inner wall, is easily caused in decentralization Cam is inverted downwards so that axial prong front end enters in the groove of flank of cam, opens axial prong, and other layer of position is dragged for by mistake.It is this sealed Cam and axial prong automatic locking are easily caused, pulling success rate is influenceed.The test allotment time is increased, the work of workman is increased Intensity.

2. it is that screw is fixed that axial prong is connected lean on fishing head, the gap between axial prong and fishing head, because of the abrasion tested Or deviation during processing, easily cause after axial prong is connected with fishing head not on a horizontal line, but outwards upwarp, constitute one Fixed angle.Instrument can be so caused to be hampered in oil pipe in decentralization or drag for incessantly water nozzle.The test allotment time is increased, Increased the labour intensity of workman.

3. guide grab is not due to having cam latch mechanism, but supported by the adjusting screw in body recess.Instrument is in decentralization Middle guide grab and tube inner wall are collided, and easily cause the angle change of guide grab, and cause instrument on eccentric injection mandrel support Be hampered, blanking plug is not gone up in pulling.The test allotment time is increased, the labour intensity of workman is increased.

At present, the internal diameter of domestic water injection well 5-1/2 " sleeve pipes is 124mm, and the injection well downhole flow regulator mostly external diameter of this casing inner diameter is 115mm's.The internal diameter of 5-1/2 under normal circumstances " sleeve pipes is 124mm, the injection well downhole flow regulator of 114mm in decentralization, rise during be Very smoothly；But the long sleeve pipe of some use times, due to being influenceed by ground movement, well post can suffer oppression deformation；Again By the long-time etch by downhole corrosion liquid, some positions of sleeve pipe can be corroded and cause perforation, now whole to ensure The sealing of tubing string is accomplished by the site of perforation being corroded again by manually subsidizing one section of casing inner diameter for 88mm, and downhole tool is special It is injection well downhole flow regulator, the radial dimension arrangement of hydraulic anchor is particularly thorny, and existing injection well downhole flow regulator has that pulling is inaccurate, at present Subsidize internal diameter generally 88mm or so of sleeve pipe；So in the case of by sleeve pipe and casing patching, the 115mm's of current version matches somebody with somebody Hydrophone can not be by deforming and subsidizing a section sleeve pipe.

Therefore design at present has eccentric injection mandrel of the diameter less than 88mm, it is adaptable to the situation that casing diameter diminishes, oil Field small casing seperated layer water injection is kept a grip in technique, and using the throw in catcher of conventional structure, axial prong and guide grab in throw in catcher are arranged on The side of throw in catcher, it is firmly bigger than normal directly to pass through eccentric orfice when by eccentric injection mandrel, cause fishing plugging device into Power is low.

Utility model content

The technical problems to be solved in the utility model is：Minor-diameter eccentric water distributer is kept a grip in oil field small casing seperated layer water injection In technique, using the throw in catcher of conventional structure, the success rate of fishing plugging device is low, to solve the above problems, there is provided a kind of pulling Device.

The purpose of this utility model is realized in the following manner：

A kind of throw in catcher, including throw in catcher main body, rope socket and reverse taper are connected in the upper and lower side of throw in catcher main body, Axial prong and guide grab are connected with throw in catcher main body, axial prong and guide grab are by the cam mechanism being arranged in throw in catcher main body Adjustment, axial prong is arranged on the lower end of guide grab, and axial prong and guide grab are symmetrical arranged relative to throw in catcher main body.

Cam mechanism includes the cam being hinged with throw in catcher main body, and cam height adjustment dress is provided with throw in catcher main body Put.

Cam height adjusting apparatus are to be arranged on the plug I below cam, and plug I is hinged with throw in catcher main body.

Guide grab angular adjustment apparatus and axial prong angular adjustment apparatus are provided with throw in catcher main body.

Guide grab angular adjustment apparatus and axial prong angular adjustment apparatus are respectively and are arranged on the He of plug II in throw in catcher main body Plug III, plug II is arranged on the front end lower section of guide grab, and plug III is arranged on the front end lower section of axial prong.

Axial prong includes axial prong mechanism and salvaging mechanism, and axial prong mechanism is hinged with salvaging mechanism, is provided with salvaging mechanism anti- Tilt adjustments plug.

Relative to prior art, the utility model is using axial prong and guide grab relative to the symmetrically arranged side of throw in catcher main body Case, it is adaptable to minor-diameter eccentric water distributer, when injection well downhole flow regulator is entered, after the axial prong of lower section passes through, in the case where power is big, on The symmetrically arranged axial prong in side can be stuck in injection well downhole flow regulator, will not directly be passed through, and improve the success rate of throw in catcher.

Brief description of the drawings

Fig. 1 is the utility model structural representation.

Fig. 2 is Fig. 1 side views.

Fig. 3 is cam mechanism schematic diagram.

Fig. 4 is Fig. 3 sectional views.

Fig. 5 is Fig. 3 A-A sectional views.

Wherein, 1 is rope socket；2 is guide grab；3 is axial prong；4 is to salvage connector；5 is bean cotyledon key seat；6 is bean cotyledon pin；7 It is fishing head；8 is pocket；9 is reverse taper；10 is cam；11 is lobe plate handle；13 is steel ball；14 is spring I；15 is pulling Device main body；16 is plug I；17 is bolt；18 is plug II；19 is spring II.

Specific embodiment

As Figure 1-Figure 5, a kind of throw in catcher, including throw in catcher main body 15, distinguishes in the upper and lower side of throw in catcher main body 15 Rope socket 1 and reverse taper 9 are connected with, axial prong 3, guide grab 2 and pocket 8, axial prong 3 and guide grab are connected with throw in catcher main body 15 2 adjust by the cam mechanism being arranged in throw in catcher main body 15, and axial prong 3 is arranged on the lower end of guide grab 2, axial prong 3 and guiding Pawl 2 is symmetrical arranged relative to throw in catcher main body 15.

Cam mechanism includes the cam 10 being hinged by bolt 17 with throw in catcher main body 15, and lobe plate is hinged with cam 10 11, elongated hole is provided with cam 10, spring I 14 and steel ball 13 are provided with elongated hole, be provided with throw in catcher main body 15 and steel The circular hole that ball 13 coordinates, is provided with cam height adjusting apparatus in throw in catcher main body 15.

Cam height adjusting apparatus are the plug I 16 for being arranged on the lower section of cam 10, and plug I 16 cuts with scissors with throw in catcher main body 15 Connect.Plug I 16 is arranged on cam 10 and the close position of axial prong 3, as shown in figure 1, plug I 16 is located at bolt 17 and plug II 18 Between.When axial prong 3 is closed, if axial prong 3 also has an inclination relative to throw in catcher main body 15, illustrating the position of cam 10 has one It is a little low, it is necessary to raise, the height of cam 10 now can be just adjusted by plug I 16.If guide grab 2 is closed, lead There is an inclination relative to throw in catcher main body 15 in the presence of spring II 19 to pawl 2, the adjustment principle of cam 10 at guide grab 2 It is identical with axial prong 3.

Guide grab angular adjustment apparatus and axial prong angular adjustment apparatus are provided with throw in catcher main body 15, are prevented in axial prong 3 Closure effect when being closed with guide grab 2 is bad.

Guide grab angular adjustment apparatus and axial prong angular adjustment apparatus are respectively and are arranged on plug II 18 in throw in catcher main body With plug III, plug II 18 be arranged on guide grab 2 front end lower section, plug III be arranged on axial prong 3 front end lower section, plug II 18 Positioned at one end that guide grab 2 is contacted with cam 10, the closure effect for adjusting guide grab 2.Plug III and plug at axial prong 3 II 18 effects are identical.

Axial prong 3 includes axial prong mechanism and salvaging mechanism, and axial prong mechanism is hinged with salvaging mechanism, is provided with salvaging mechanism anti- Tilt adjustments plug.Salvaging mechanism includes the salvaging connector 4 and fishing head 7 that are sequentially connected, salvages connector 4 and fishing head 7 Connected by bean cotyledon pin 6 and bean cotyledon key seat 5, inclined-plane is provided with the end face that axial prong mechanism is connected with salvaging mechanism, the company of salvaging The hole vertical with inclined-plane is provided with joint, anti-dumping skew adjustment plug is provided with hole, it is relative with master for adjusting salvaging mechanism The angle of pawl mechanism.Also there is the device for adjusting salvaging mechanism angle in the prior art, but effect and bad, in axial prong 3 During opening, it is impossible to ensure that salvaging mechanism is parallel with throw in catcher main body 15, effect is bad when causing pulling.The utility model is used Anti-dumping skew adjustment plug, limits salvaging mechanism outward-dipping by spacing mode, and when opening axial prong 3, salvaging mechanism keeps The state parallel with throw in catcher main body 15, pulling effect is relatively good.

Above-described is only preferred embodiment of the present utility model, it is noted that for those skilled in the art For, under the premise of the utility model general idea is not departed from, some changes and improvements can also be made, these should also be considered as Protection domain of the present utility model.

Claims (6)

1. a kind of throw in catcher, including throw in catcher main body, rope socket and reverse taper are connected in the upper and lower side of throw in catcher main body, Axial prong and guide grab are connected with throw in catcher main body, axial prong and guide grab are adjusted by the cam mechanism being arranged in throw in catcher main body It is whole, it is characterised in that：Axial prong is arranged on the lower end of guide grab, and axial prong and guide grab are symmetrical arranged relative to throw in catcher main body.

2. a kind of throw in catcher according to claim 1, it is characterised in that：Cam mechanism includes being hinged with throw in catcher main body Cam, is provided with cam height adjusting apparatus in throw in catcher main body.

3. a kind of throw in catcher according to claim 2, it is characterised in that：Cam height adjusting apparatus are to be arranged under cam The plug I of side, plug I is hinged with throw in catcher main body.

4. a kind of throw in catcher according to claim 1, it is characterised in that：Guide grab angle tune is provided with throw in catcher main body Engagement positions and axial prong angular adjustment apparatus.

5. a kind of throw in catcher according to claim 4, it is characterised in that：Guide grab angular adjustment apparatus and axial prong angle are adjusted Engagement positions are respectively and are arranged on plug II and plug III in throw in catcher main body, and plug II is arranged on the front end lower section of guide grab, silk The stifled III front end lower section for being arranged on axial prong.

6. a kind of throw in catcher according to claim 1, it is characterised in that：Axial prong includes axial prong mechanism and salvaging mechanism, main Pawl mechanism is hinged with salvaging mechanism, and anti-dumping skew adjustment plug is provided with salvaging mechanism.