阅读说明：本技术 一种油管内活动式锚定装置及锚定方法 (Movable anchoring device and anchorage method in a kind of oil pipe ) 是由 马辉运 李奎 杨云山 邓悟 张芳芳 易德正 杨永韬 江源 于 2019-10-12 设计创作，主要内容包括：本发明提供了一种油管内活动式锚定装置及锚定方法,涉及油气田采油采气井下工具技术领域,解决了现有的活动式锚定装置坐封牢靠后不易解封的技术问题。锚定装置包括从上到下顺次连接的打捞头、锥管和卡瓦筒；其中,所述锥管与卡瓦筒相匹配,且所述卡瓦筒通过定位销钉套接在锥管的外侧；所述锥管的内径与进行坐封时所使用的丢手杆的外径相匹配；当坐封完成后,所述卡瓦筒上的卡瓦锚定在油管内壁。本发明用于提高油管内锚定的可靠性与解封成功率。(The present invention provides movable anchoring device and anchorage methods in a kind of oil pipe, are related to technical field of tools under oil gas field oil recovery gas recovery well, solve existing movable anchoring device set it is firm after be not easy the technical issues of unsealing.Anchoring device includes sequentially connected fishing head, Taper Pipe and slips cylinder from top to bottom；Wherein, the Taper Pipe matches with slips cylinder, and the slips cylinder is socketed in the outside of Taper Pipe by shop bolt；The internal diameter of the Taper Pipe and the outer diameter of bar of giving up used when being set match；After the completion of setting, the slips anchoring on the slips cylinder is in tube inner wall.The present invention is used to improve the reliability being anchored in oil pipe and deblocking success rate.)

1. movable anchoring device in a kind of oil pipe being used cooperatively with well dynamic tool, it is characterised in that: including on to Under sequentially connected fishing head, Taper Pipe and slips cylinder；Wherein,

The Taper Pipe matches with slips cylinder, and the slips cylinder is socketed in the outside of Taper Pipe by shop bolt；

The internal diameter of the Taper Pipe and the outer diameter of bar of giving up used when being set match；

The through-hole passed through for the bar of giving up is offered on the fishing head and slips cylinder；And the fishing head and slips cylinder On the through-hole that opens up communicated with Taper Pipe；

The outside of the fishing head be equipped with for the step for setting cylinder and being abutted used when being set；

After the completion of setting, the slips anchoring on the slips cylinder is in tube inner wall.

2. movable anchoring device in the oil pipe according to claim 1 being used cooperatively with well dynamic tool, feature Be: the fishing head is actively socketed on the outside of Taper Pipe.

3. movable anchoring device in the oil pipe according to claim 1 or 2 being used cooperatively with well dynamic tool, special Sign is: the fishing head is threaded in the outside of Taper Pipe.

4. anchorage method in the oil pipe that one kind easily unseals, it is characterised in that: using anchor described in any one of claim 1-3 Determine device to be set.

5. anchorage method in the oil pipe according to claim 4 easily unsealed, it is characterised in that:

Set the specific steps of operation are as follows:

S1, by well dynamic tool by set cylinder and give up any one of bar and claim 1-3 described in anchoring device Connection:

One end of the bar of giving up is connect with the mandrel of well dynamic tool；The other end of the bar of giving up sequentially passes through fishing head Through-hole, Taper Pipe and slips cylinder through-hole, be then fixed by setting the pin bar that will give up with slips cylinder；It is described to set cylinder One end connect with the outer cylinder of well dynamic tool；The other end for setting cylinder is abutted with the step of fishing head；

S2, the delayed startup duration for setting well dynamic tool:

If steel wire operation decentralization anchoring power tool string designs anchor station used time t1, the reserved duration t2 of safety to oil pipe；Then well A length of T1=t1+t2 when the delayed startup of lower power tool；

Anchoring device described in S3, decentralization any one of claim 1-3 is to designing anchor station:

Anchoring device described in any one of claim 1-3 stops decentralization behind design anchor station, and it is dynamic to wait for underground quietly Power tool delayed startup；

S4, well dynamic instrument start-up, mandrel are shunk, and the bar of giving up being attached thereto drives slips cylinder in the cone on Taper Pipe Row realizes the anchoring of slips and tube inner wall so that the slips on slips cylinder be made to be embedded between cone and tube inner wall；If described Used time t3, the reserved duration t4 of safety are anchored in the test of anchoring device indoor simulation；Then well dynamic tool carries out anchoring operation Shi Changwei T2=t3+ t4；

S5, start to transfer anchor tool certainly and string calculations, after waiting T1+T2 duration, rise and to be anchored the inspection of power tool string, it is ensured that anchor Determine device normally to give up；Set operation completion.

6. anchorage method in the oil pipe according to claim 5 easily unsealed, it is characterised in that: in the decentralization right of step S3 It is required that being equipped with simulation drifting construction operation step, tool before anchoring device described in any one of 1-3 to design anchor station Body are as follows:

Will simulation drifting tool pass to oil pipe design anchor station 20m hereinafter, design anchor station should lead to repeatedly 3 ~ 5 times, it is without hindrance Card is qualification.

7. anchorage method in the oil pipe according to claim 6 easily unsealed, it is characterised in that: simulate the effective of drifting tool For length not less than 1.2 times of anchoring device overall length described in any one of claim 1-3, the maximum of simulation drifting tool is outer Diameter is greater than the anchoring device maximum outside diameter 2mm ~ 3mm.

8. anchorage method in the oil pipe according to claim 7 easily unsealed, it is characterised in that: simulation drifting and anchoring operation During tool string tripping in, well head and 0 ~ 100m well section are passed through with the speed less than 15m/min；By variable diameter position in oil pipe and When the well section that hole angle changes greatly, lowering velocity is slowly dropped to 30m/min or less by least in advance 100m.

9. anchorage method in the oil pipe easily unsealed according to any one of claim 5-8, it is characterised in that: the step Rapid S2 and t2 in step S4 and t4 is 20min ~ 30min.

10. anchorage method in the oil pipe according to claim 9 easily unsealed, it is characterised in that: in the step S1, give up One end of bar is connect with the mandrel thread of well dynamic tool；The outer cylinder screw thread of described one end for setting cylinder and well dynamic tool Connection.

Technical field

The present invention relates to movable anchoring devices in a kind of oil gas field oil recovery gas production downhole tool more particularly to a kind of oil pipe And anchorage method.

Background technique

During oil gas well mining, tripping in anchoring device is to hang safety valve, flow controller or other usually in oil pipe Downhole instrument, setting and unsealing for anchoring device are main by steel wire operation completion.

In currently used oil pipe there are mainly two types of anchoring devices, one is use fixed slips and be preset on oil pipe The fixed anchoring device (such as X-type lock core, R type lock core) that is anchored of landing nipple, another kind is by movable card Watt with cone cooperation come realize with tube inner wall anchoring movable anchoring device (such as Type B mandrel, W core barrel).It is fixed Landing nipple anchoring on formula anchoring device and oil pipe is reliable, sets and unsealing operation is relatively simple, but be limited to landing nipple Position, anchor station are unadjustable；Movable anchoring device has the characteristics that anchor station is adjustable, can almost be anchored on Any position in oil pipe.But movable anchoring device need to realize slips and tube inner wall with larger upper lifting power when setting Anchoring, anchoring reliability depends primarily on the construction experience of tool performance itself and operator personnel, however is anchored tension again It is unfavorable for unsealing, this just forms the mechanical relationship contradiction for setting and unsealing.In addition, fouling or serious corrosion will also result in it is movable Anchoring device deblocking is difficult, occurs locked and can not salvage.

Applicants have discovered that at least there is following technical problem in the prior art:

1, in oil pipe in the prior art movable anchoring device set it is firm after be not easy to unseal；

2, movable anchoring device in oil pipe in the prior art, fouling or serious corrosion will cause deblocking difficulty, lock And it can not salvage.

Summary of the invention

Movable anchoring device in the oil pipe being used cooperatively the purpose of the present invention is to provide a kind of and well dynamic tool, The anchoring device and tubing anchor are reliable, can solve existing movable anchoring device set it is firm after the technology that is not easy to unseal ask Topic, improves the reliability and success rate of deblocking.Optimal technical scheme in many technical solutions provided by the invention can be generated The elaboration as detailed below of many technical effects.

To achieve the above object, the present invention provides following technical schemes:

Movable anchoring device in a kind of oil pipe being used cooperatively with well dynamic tool provided by the invention, including from top to bottom Sequentially connected fishing head, Taper Pipe and slips cylinder；Wherein,

The Taper Pipe matches with slips cylinder, and the slips cylinder is socketed in the outside of Taper Pipe by shop bolt；

The internal diameter of the Taper Pipe and the outer diameter of bar of giving up used when being set match；

The through-hole passed through for the bar of giving up is offered on the fishing head and slips cylinder；And the fishing head and slips cylinder On the through-hole that opens up communicated with Taper Pipe；

The outside of the fishing head be equipped with for the step for setting cylinder and being abutted used when being set；

After the completion of setting, the slips anchoring on the slips cylinder is in tube inner wall.

Optional or preferred, the fishing head is actively socketed on the outside of Taper Pipe.

Optional or preferred, the fishing head is threaded in the outside of Taper Pipe.

Anchorage method in the oil pipe that one kind provided by the invention easily unseals, is set using above-mentioned anchoring device.

It is optional or preferred, set the specific steps of operation are as follows:

S1, by well dynamic tool by setting cylinder and bar of giving up is connect with above-mentioned anchoring device:

One end of the bar of giving up is connect with the mandrel of well dynamic tool；The other end of the bar of giving up sequentially passes through fishing head Through-hole, Taper Pipe and slips cylinder through-hole, be then fixed by setting the pin bar that will give up with slips cylinder；It is described to set cylinder One end connect with the outer cylinder of well dynamic tool；The other end for setting cylinder is abutted with the step of fishing head；

S2, the delayed startup duration for setting well dynamic tool:

If steel wire operation decentralization anchoring power tool string designs anchor station used time t1, the reserved duration t2 of safety to oil pipe；Then well A length of T1=t1+t2 when the delayed startup of lower power tool；

S3, the above-mentioned anchoring device of decentralization are to designing anchor station:

Above-mentioned anchoring device stops decentralization behind design anchor station, waits for well dynamic tool delayed startup quietly；

S4, well dynamic instrument start-up, mandrel are shunk, and the bar of giving up being attached thereto drives slips cylinder in the cone on Taper Pipe Row realizes the anchoring of slips and tube inner wall so that the slips on slips cylinder be made to be embedded between cone and tube inner wall；If described Used time t3, the reserved duration t4 of safety are anchored in the test of anchoring device indoor simulation；Then well dynamic tool carries out anchoring operation Shi Changwei T2=t3+ t4；

S5, start to transfer anchor tool certainly and string calculations, after waiting T1+T2 duration, rise and to be anchored the inspection of power tool string, it is ensured that anchor Determine device normally to give up；Set operation completion.

Optionally or preferably simulation is equipped with before the above-mentioned anchoring device of the decentralization of step S3 to design anchor station Drifting construction operation step, specifically:

Will simulation drifting tool pass to oil pipe design anchor station 20m hereinafter, design anchor station should lead to repeatedly 3 ~ 5 times, it is without hindrance Card is qualification.

Optional or preferred simulation drifting tool effective length is not less than 1.2 times of above-mentioned anchoring device overall length, mould The maximum outside diameter of quasi- drifting tool is greater than the anchoring device maximum outside diameter 2mm ~ 3mm.

During optional or preferred simulation drifting and anchoring power tool string tripping in, to be less than the speed of 15m/min Pass through well head and 0 ~ 100m well section；When by variable diameter position and hole angle change greatly in oil pipe well section, at least in advance 100m Lowering velocity is slowly dropped to 30m/min or less.

The optional or preferred step S2 and t2 in step S4 and t4 is 20min ~ 30min.

In the optional or preferred step S1, the one end for bar of giving up is connect with the mandrel thread of well dynamic tool； Described one end for setting cylinder is threadedly coupled with the outer cylinder of well dynamic tool.

Based on the above-mentioned technical proposal, the present embodiment at least can produce following technical effect:

(1) movable anchoring device and anchorage method in oil pipe provided by the invention, using the powerful dynamic of well dynamic tool Power carries out movable anchoring device in oil pipe and setting and unsealing, and when being unsealed, the mandrel for passing through well dynamic tool connects It connects after mating fishing tool down toward the upper end of anchoring device, fishing tool catches fishing head；Then start well dynamic tool, core Axis is shunk, and drives the fishing tool uplink being attached thereto, so that above mentioning fishing head leaves slips cylinder, deblocking can be realized；Even if There is fouling or serious corrosion, deblocking operation can also be carried out, is remarkably improved anchoring reliability and deblocking success rate, can solve In existing oil pipe movable anchoring device set it is firm after be not easy the technical issues of unsealing；

(2) movable anchoring device and anchorage method in oil pipe provided by the invention, set using well dynamic tool/solve oil sealing In managing during anchoring device, operation steel wire does not stress, and effectively reduces steel wire operation risk；

(3) movable anchoring device and anchorage method, well dynamic tool set/solve in sealed tube in oil pipe provided by the invention The process automation of anchoring device requires to significantly reduce to the technical level of operator, is conducive to improve job success ratio.

Detailed description of the invention

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with It obtains other drawings based on these drawings.

Fig. 1 is the structural schematic diagram of the embodiment of the present invention 1；

Fig. 2 is that the embodiment of the present invention 1 and embodiment 2 set assembling schematic diagram.

In figure: 1, well dynamic tool；2, well dynamic tool outer cylinder；3, well dynamic tool mandrel；4, cylinder is set；5, It gives up bar；6, fishing head；7, Taper Pipe；8, slips cylinder；9, shop bolt；10, pin is set；11, step；12, slips.

Specific embodiment

To make the object, technical solutions and advantages of the present invention clearer, technical solution of the present invention will be carried out below Detailed description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base Embodiment in the present invention, those of ordinary skill in the art are obtained all without making creative work Other embodiment belongs to the range that the present invention is protected.

It is as depicted in figs. 1 and 2: