CN105569592A - Pipe string operation method with convenient release equipment determination and drilling liner hanger system - Google Patents
Pipe string operation method with convenient release equipment determination and drilling liner hanger system Download PDFInfo
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- CN105569592A CN105569592A CN201410536004.1A CN201410536004A CN105569592A CN 105569592 A CN105569592 A CN 105569592A CN 201410536004 A CN201410536004 A CN 201410536004A CN 105569592 A CN105569592 A CN 105569592A
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- anchoring device
- slips
- extension hanger
- reverse anchoring
- reverse
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Abstract
The invention relates to a pipe string operation method with convenient release equipment determination and a drilling liner hanger system; the drilling liner hanger system comprises a drilling liner hanger and a reverse anchor; the pipe string operation method comprises the following steps: 1, sending the pipe string into a drivepipe design well depth; 2, using a pumping pressure mode to enable a forward cava of the drilling liner hanger to move upwards along an upper taper sleeve so as to hang on the drilling liner hanger; 3, contentiously pressing so as to enable a negative cava of the reverse anchor to move downwards along a lower taper sleeve, thus reversely locking the reverse anchor; 4, determining whether normal release equipment can be done, and carrying out the release equipment. When the pipe string is sent to the drivepipe and reaches to the design well depth, drilling liner hanger hanging can be carried out, and the reverse anchor can be reversely locked, so a tail pipe can be reversely locked upwards. In the prior art, when a conveying tool is lifted, the hanging tail pipe may be unhooked and the tail pipe will move upwards; the novel method and system can prevent the said problems.
Description
Technical field
The invention belongs to petroleum vapour well cementing technology field, the method for the operation pipe string judged that is specifically related to for the benefit of to give up and extension hanger system.
Background technology
In the drilling liner cementing operation of deep-well, ultradeep well, high angle hole and horizontal well, when hang tail pipe shorter, lightweight or frictional resistance is larger time exist running tool give up not easily judge and give up difficulty problem, easily cause tail pipe to propose well with running tool, even occur the phenomenon fallen in proposition process in well.
Therefore, need invent and a kind ofly be beneficial to the method for operation pipe string and extension hanger system of giving up and judging, prevent from carrying running tool and cause and sit the extension hanger solution of hanging and hang and tail pipe moves, and be conducive to giving up and judge and give up.
Summary of the invention
For above-mentioned problem, the present invention proposes a kind of method and the extension hanger system that are beneficial to the operation pipe string judged of giving up.In the method for operation pipe string being beneficial to judgement of giving up, hang by extension hanger realization seat, and locking can be realized by reverse anchoring device, thus prevent from carrying the tail pipe solution extension that running tool causes seat extension, provide Reliable guarantee for tail pipe can firmly tangle.Thus ensure that the safety that drilling liner cementing is constructed.
According to an aspect of the present invention, propose a kind of method being beneficial to the operation pipe string judged of giving up, pipe string comprises extension hanger, oppositely anchoring device and tail pipe, it is characterized in that, comprises the following steps:
I) pipe string is sent into sleeve design well depth;
II) by pump pressure mode, make the forward slips of extension hanger hang extension hanger along epicone cover is up to sit;
III) continue pressurization, make the inverted slips of reverse anchoring device descending with the reverse anchoring device of backward hold along lower tapered sleeve;
IV) judge whether normally to give up, if can operation of giving up be carried out.
When pipe string being sent in sleeve pipe and arrive design well depth, first carrying out seats extension extension hanger, then carrying out the reverse anchoring device of backward hold, thus achieve tail pipe is oppositely upwards locked.Thus avoid and carry running tool and cause and sit the extension hanger solution of hanging and hang and tail pipe moves, and be conducive to giving up and judge and give up.
In one embodiment, in step III) before, if oppositely anchoring device locks at non-design attitude, or in step IV) in, if when can not normally give up, then unlock reverse anchoring device, pipe string is proposed by sleeve pipe.Thus, if extension sat by generation extension hanger and reverse anchoring device latched position does not meet designing requirement, and when cannot normally carry out the fault such as giving up, need tail pipe to propose sleeve pipe.And this method, after unlocking reverse anchoring device, guarantee tail pipe successfully to propose sleeve pipe, thus avoid the generation of down-hole accident, and ensure that the safety that drilling liner cementing is constructed.
In one embodiment, between the reverse anchoring device body and lower tapered sleeve of reverse anchoring device, arrange shear pin, during upper lifting pipe string to constant load, shear pin is cut off, and makes that lower tapered sleeve is descending to be separated with inverted slips, so that unlocks reverse anchoring device.Preferably, the load of upper lifting pipe string is greater than pipe string buoyant weight.By said method, when upper lifting pipe string is greater than pipe string buoyant weight, shear pin is cut off, cause lower tapered sleeve descending so that be separated with inverted slips, thus achieve and unlock reverse anchoring device.
In one embodiment, in step II) in, hydraulic way pitching is adopted to build the pressure, when pressure arrives the first pressure, upper fluid cylinder promotes the up seat of forward slips and hangs extension hanger, in step III) in, when pressure reaches the second pressure, lower fluid cylinder promotes the reverse anchoring device of the descending locking of inverted slips.By said method, adopt hydraulic way pitching to build the pressure, make simple to operate, and can realize better sitting extension extension hanger and the reverse anchoring device of locking.Meanwhile, more easily control the sequencing that extension hanger sits extension and the locking of reverse anchoring device, realize operating effect better, be conducive to the quality improving cementing operation.
Preferably, the little 4 ~ 5MPa of the first pressure ratio second pressure.Thus achieve and first carry out seat extension extension hanger, then carry out locking reverse anchoring device.
According to a further aspect in the invention, provide a kind of extension hanger system, comprise the reverse anchoring device be fixedly connected with the upper end of tail pipe and the extension hanger be fixedly connected with the upper end of reverse anchoring device, wherein, reverse anchoring device has:
Reverse anchoring device body,
Circulating type is socketed in the lower fluid cylinder on the outer wall of reverse anchoring device body,
Be arranged on the inverted slips in lower fluid cylinder downstream, inverted slips circulating type is arranged on the outer wall of reverse anchoring device body, and the upper end of inverted slips is fixedly connected with lower fluid cylinder,
Be arranged on the lower tapered sleeve in the downstream of inverted slips, wherein descend tapered sleeve circulating type to be socketed on the outer wall of reverse anchoring device body, and be connected with reverse anchoring device body by shear pin.
Thus, entering under the pipe be made up of extension hanger system and tail pipe string after in sleeve pipe, the lower fluid cylinder of reverse anchoring device promote under hydraulic action inverted slips along under tapered sleeve descending, thus realize locking.Its structure is simple, is easy to realize.Simultaneously, between reverse anchoring device body and lower tapered sleeve, shear pin is set, when occurring that extension hanger is sat extension position and do not met designing requirement, and normally cannot carry out giving up etc. fault, when needing to propose tail pipe, the load that upper lifting pipe string is certain, makes shear pin cut off, inverted slips is separated with lower tapered sleeve, thus realizes unlocking reverse anchoring device.
In one embodiment, in the peripheral outer wall of lower tapered sleeve and in the peripheral outer wall of reverse anchoring device body, matched arranges 10 shear pinhole for shear pin.By this set, the size that can unlock load according to scene adjusts the quantity of shear pin.Strengthen the versatility of reverse anchoring device thus.
In one embodiment, extension hanger comprises:
Extension hanger body,
Circulating type is socketed in the upper fluid cylinder on the outer wall of extension hanger body,
Be arranged on the forward slips of fluid cylinder upstream, forward slips circulating type is arranged on the outer wall of extension hanger body, and the lower end of forward slips is fixedly connected with upper fluid cylinder,
Be arranged on the upper tapered sleeve of the upstream of forward slips, wherein epicone cover circulating type is socketed on the outer wall of extension hanger body, and is fixedly connected with extension hanger body,
Wherein, the lower end of extension hanger body is fixedly connected with the upper end of reverse anchoring device body.Its structure is simple, is easy to realize.
In one embodiment, the tooth top external diameter of the slip insert of inverted slips reduces successively on direction from top to bottom.Preferably, the tooth top external diameter of the top slip insert of inverted slips is 1.001 ~ 1.02 with the tooth top external diameter ratio of the slip insert bottom of inverted slips.By above-mentioned setting, when oppositely anchoring device locks, increase the contact area of inverted slips and internal surface of sleeve pipe, thus increase the safety of locking.
In the application, term " on " D score with the real work direction of system for reference.
Compared with prior art, the present invention includes following advantage.Pipe string is being sent into after in sleeve pipe, seat can be carried out successively and hang extension hanger and the reverse anchoring device of backward hold, thus achieve tail pipe oppositely locking upwards, thus, can avoid putting forward the phenomenon that tail pipe solution hanging device and tail pipe that running tool causes are moved and occur.Further, if extension sat by generation extension hanger and reverse anchoring device latched position does not meet designing requirement, and when cannot normally carry out the fault such as giving up, reverse anchoring device can unlock, thus can propose pipe string, avoids the generation of down-hole accident.Ensure that the safety that drilling liner cementing is constructed thus.Simultaneously, between reverse anchoring device body and lower tapered sleeve, shear pin is set, when occurring that extension hanger is sat extension position and do not met designing requirement, and normally cannot carry out giving up etc. fault, when needing to propose tail pipe, the certain load of upper lifting pipe string just can make shear pin cut off, thus realizes unlocking reverse anchoring device, and this structure is simple, easy to operate.And this system architecture is simple, be easy to realize.
Accompanying drawing explanation
Also will be described in more detail the present invention with reference to accompanying drawing based on embodiment hereinafter.Wherein:
Fig. 1 shows according to extension hanger system of the present invention.
Accompanying drawing is not according to the scale of reality.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described.
Fig. 1 shows according to extension hanger system 100 of the present invention.As shown in Figure 1, extension hanger system 100 comprises reverse anchoring device 20 and extension hanger 50.Reverse anchoring device 20 is connected to the lower end of extension hanger 50 and supports the use with extension hanger 50.
Wherein, extension hanger 50 comprises extension hanger body 1, upper fluid cylinder 3, forward slips 2 and upper tapered sleeve 13.Wherein, upper fluid cylinder 3 is socketed on the outer wall of extension hanger body 1, and the lower end of forward slips 2 is fixedly connected with upper fluid cylinder 3, can promote forward slips 2 moves to make upper fluid cylinder 3.Upper tapered sleeve 13 is fixedly installed on extension hanger body 1, and coordinates with forward slips 2.Thus, upper fluid cylinder 3 can promote forward slips 2 and move along on upper tapered sleeve 13, to make forward slips 2 contact with sleeve pipe 11, thus realizes extension hanger 50 seat extension.
Reverse anchoring device 20 comprises reverse anchoring device body 5, lower fluid cylinder 6, inverted slips 7 and lower tapered sleeve 9.Wherein, reverse anchoring device body 5 is fixedly connected with hanger body 1.Further, reverse anchoring device body 5 is roughly tubular structure.Lower fluid cylinder 6 circulating type is socketed on the outer wall of reverse anchoring device body 5, and is fixedly connected with by the outer wall of the first shear pin 4 with reverse anchoring device body 5.Inverted slips 7 is fixedly connected with in the lower end of lower fluid cylinder 6.Be fixedly connected with the lower end of lower fluid cylinder 6 by the inverted slips push rod 71 of inverted slips 7, can move down under lower fluid cylinder 6 promotes to make inverted slips 7.And the inverted slips main body 72 of inverted slips 7 coordinates with the lower tapered sleeve 9 being arranged on its lower end, in inverted slips 7 folding process, lower tapered sleeve 9 can be climbed, inverted slips 7 is coordinated with sleeve pipe 11.
Thus, in well cementing process, the pipe string 80 be made up of above-mentioned extension hanger system 100 and tail pipe 10 is delegated in the sleeve pipe 11 of down-hole.Hang after extension hanger 50 at seat, continuing to build the pressure promotes lower fluid cylinder 6 and cuts off the first shear pin 4, drives inverted slips 7 descending along lower tapered sleeve 9, realizes the locking of reverse anchoring device 20.Adopt extension hanger system 100, can realize tail pipe 10 oppositely upwards to lock, thus can avoid carrying running tool cause sit extension extension hanger 50 solution extension and tail pipe 10 on move.
The mode that pitching can be adopted to build the pressure is sat and is hung extension hanger 50, and when pressure arrives the first pressure, upper fluid cylinder 3 promotes the up seat of forward slips 2 and hangs extension hanger 50.Wait to sit and hang the continuous pressurization of successful subsequent, when pressure reaches the second pressure, make lower fluid cylinder 6 in reverse anchoring device 20 drive inverted slips 7 descending, the reverse anchoring device 20 of backward hold, realizes tail pipe 10 locking upwards.Preferably, the little 4 ~ 5MPa of the first pressure ratio second pressure.Can realize better by this method sitting and hang extension hanger 50 and the reverse anchoring device 20 of locking.Make operation easier, and effectively can control the sequencing that extension hanger 50 sits extension and reverse anchoring device 20 locking, be conducive to the quality improving cementing operation.
By shear pin 8, tapered sleeve 9 is connected on reverse anchoring device body 5.Sit in advance when extension hanger 50 and reverse anchoring device 20 and hang and locking, or other are when needing hanger system 100 to unlock situation, exceed the certain load of pipe string 80 buoyant weight by upper lifting pipe string 80, make the trend that reverse anchoring device body 5 descends tapered sleeve 9 to move up relatively.Because inverted slips 7, lower tapered sleeve 9 and sleeve pipe 11 lock together, at this moment shear pin 8 will be cut off.Then descend tapered sleeve 9 descending, inverted slips 7 is separated with lower tapered sleeve 9, namely achieves the unblock of reverse anchoring device 20.Thus, adopt this extension hanger system 100, if the position that the position or oppositely anchoring device 20 locking that extension sat by extension hanger 50 occurs does not meet designing requirement, and when cannot normally carry out the fault such as giving up, also by unlocking reverse anchoring device 20, pipe string 80 is proposed, in sleeve pipe 11, add working security.
In one embodiment, in order to increase versatility, extension hanger system 100 is applied in different pipe strings 80.In the peripheral outer wall of lower tapered sleeve 9 and in the peripheral outer wall of reverse anchoring device body 5, matched arranges 10 shear pinhole 51 for shear pin 8, is connected by lower tapered sleeve 9 through lower tapered sleeve 9 for shear pin 8 with reverse anchoring device body 5.Thus, unlock according to scene the quantity that the size of load selects shear pin 8, all or part of with choice for use shear pinhole 51.It should be noted that, shear pinhole 51 is not limited to 10 in the quantity of circumferential direction, according to field demand, also can be set to other quantity.Such as 6 ~ 20.
When reverse anchoring device 20 locks, in order to increase inverted slips 7 and the contact internal walls area of sleeve pipe 11, make locking more reliable.In one embodiment, the tooth top external diameter of the slip insert 73 of inverted slips 7 reduces successively on direction from top to bottom.Preferably, the tooth top external diameter of the top slip insert 73 of inverted slips 7 is 1.001 ~ 1.02 with the tooth top external diameter ratio of the slip insert bottom 73 of inverted slips 7.
The method that being conducive to the giving up operation that judges comprises the pipe string 80 of extension hanger system 100 is described in detail below according to Fig. 1:
In cementing operation process, first, the pipe string 80 including extension hanger system 100 and tail pipe 10 is sent in sleeve pipe 11.Arrive design attitude when pipe string 80 and after circulation, the circulation canal of pipe string 80 blocked (this process, can pumping operation be carried out) from well head pitching.Then, pumping highly pressurised liquid in pipe string 80, when pressure arrives the first force value (such as, 7 ~ 10MPa) time, upper fluid cylinder 3 promotes forward slips 2, make forward slips 2 up along the inclined-plane of upper tapered sleeve 13, make slips tooth 21 wedging of slips 2 between upper tapered sleeve 13 and sleeve pipe 11, the seat realizing extension hanger 50 is hung.Guaranteeing that the seat of extension hanger 50 is hung successfully, press down running tool 50 ~ 100KN, then, continue to build the pressure, when pressure arrives the second pressure (11 ~ 15MPa), drive lower fluid cylinder 6 to cut off the first shear pin 4, and lower fluid cylinder 6 is descending, thus drive inverted slips 7 descending along lower tapered sleeve 9, until slips tooth 73 wedging of inverted slips 7 is between lower tapered sleeve 9 and sleeve pipe 11, realize lock function.Thus limit the up of extension hanger 50 and tail pipe 10, effectively prevent the problem of tail pipe 10 movement in well.Finally, carry out operation of giving up, realize being separated of running tool and extension hanger system 100.
When tail tube hanging system 100 non-design attitude sit hang and locking time, or give up break down time, need pipe string 80 to propose from sleeve pipe 11.Then upper lifting pipe string 80, when exceeding the certain load of pipe string 80 buoyant weight, makes the trend that reverse anchoring device body 5 descends tapered sleeve 9 to move up relatively.Cut off the shear pin 8 between reverse anchoring device body 5 and lower tapered sleeve 9.Then descend tapered sleeve 9 descending, inverted slips 7 is separated with lower tapered sleeve 9, namely achieves the unblock of reverse anchoring device 20.
Although invention has been described with reference to preferred embodiment, without departing from the scope of the invention, various improvement can be carried out to it and parts wherein can be replaced with equivalent.The present invention is not limited to specific embodiment disclosed in literary composition, but comprises all technical schemes fallen in the scope of claim.
Claims (10)
1. be beneficial to a method for the operation pipe string judged of giving up, described pipe string comprises extension hanger, oppositely anchoring device and tail pipe, it is characterized in that, comprises the following steps:
I) described pipe string is sent into sleeve design well depth;
II) by pump pressure mode, make the forward slips of described extension hanger hang described extension hanger along epicone cover is up to sit;
III) continue pressurization, make the inverted slips of described reverse anchoring device descending with anchoring device reverse described in backward hold along lower tapered sleeve;
IV) judge whether normally to give up, if can operation of giving up be carried out.
2. method according to claim 1, it is characterized in that, in described step III) before, if described reverse anchoring device locks at non-design attitude, or in described step IV) in, if when can not normally give up, then unlock described reverse anchoring device, described pipe string is proposed by described sleeve pipe.
3. method according to claim 2, it is characterized in that, between the reverse anchoring device body and described lower tapered sleeve of described reverse anchoring device, shear pin is set, during upper lifting pipe string to constant load, described shear pin is cut off, descending and the described inverted slips of described lower tapered sleeve is separated, so that unlocks described reverse anchoring device.
4. method according to claim 1, it is characterized in that, in step II) in, hydraulic way pitching is adopted to build the pressure, when pressure arrives the first pressure, upper fluid cylinder promotes the up seat of described forward slips and hangs described extension hanger, in step III) in, when pressure reaches the second pressure, lower fluid cylinder promotes the described reverse anchoring device of the descending locking of described inverted slips.
5. method according to claim 4, is characterized in that, the little 4 ~ 5MPa of the second pressure described in described first pressure ratio.
6. an extension hanger system, is characterized in that, comprise the reverse anchoring device be fixedly connected with the upper end of tail pipe and the extension hanger be fixedly connected with the upper end of described reverse anchoring device, wherein, described reverse anchoring device has:
Reverse anchoring device body,
Circulating type is socketed in the lower fluid cylinder on the outer wall of described reverse anchoring device body,
Be arranged on the inverted slips in described lower fluid cylinder downstream, described inverted slips circulating type is arranged on the outer wall of described reverse anchoring device body, and the upper end of described inverted slips is fixedly connected with described lower fluid cylinder,
Be arranged on the lower tapered sleeve in the downstream of described inverted slips, wherein said lower tapered sleeve circulating type is socketed on the outer wall of described reverse anchoring device body, and is connected with described reverse anchoring device body by described shear pin.
7. system according to claim 6, is characterized in that, in the peripheral outer wall of described lower tapered sleeve and in the peripheral outer wall of described reverse anchoring device body, matched arranges 10 shear pinhole for described shear pin.
8. the system according to claim 6 or 7, is characterized in that, described extension hanger comprises:
Extension hanger body,
Circulating type is socketed in the upper fluid cylinder on the outer wall of described extension hanger body,
Be arranged on the forward slips of described upper fluid cylinder upstream, described forward slips circulating type is arranged on the outer wall of described extension hanger body, and the lower end of described forward slips is fixedly connected with described upper fluid cylinder,
Be arranged on the upper tapered sleeve of the upstream of described forward slips, wherein said epicone cover circulating type is socketed on the outer wall of described extension hanger body, and is fixedly connected with described extension hanger body,
Wherein, the lower end of described extension hanger body is fixedly connected with the upper end of described reverse anchoring device body.
9. system according to claim 6, is characterized in that, the tooth top external diameter of the slip insert of described inverted slips reduces successively on direction from top to bottom.
10. system according to claim 9, is characterized in that, the tooth top external diameter of the top slip insert of described inverted slips is 1.001 ~ 1.02 with the tooth top external diameter ratio of the slip insert bottom of inverted slips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410536004.1A CN105569592B (en) | 2014-10-11 | 2014-10-11 | Beneficial to the method for the operation pipe string for judgement of giving up and extension hanger system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410536004.1A CN105569592B (en) | 2014-10-11 | 2014-10-11 | Beneficial to the method for the operation pipe string for judgement of giving up and extension hanger system |
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| Publication Number | Publication Date |
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| CN105569592A true CN105569592A (en) | 2016-05-11 |
| CN105569592B CN105569592B (en) | 2018-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410536004.1A Active CN105569592B (en) | 2014-10-11 | 2014-10-11 | Beneficial to the method for the operation pipe string for judgement of giving up and extension hanger system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108343393A (en) * | 2017-01-22 | 2018-07-31 | 江楠 | Front suspension device |
| CN113818826A (en) * | 2021-10-12 | 2021-12-21 | 中国石油化工股份有限公司 | Tail pipe suspension well cementation device |
| CN114427363A (en) * | 2020-09-25 | 2022-05-03 | 中国石油化工股份有限公司 | Running tool, liner hanger and liner hanger assembly comprising same |
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| CN114427363A (en) * | 2020-09-25 | 2022-05-03 | 中国石油化工股份有限公司 | Running tool, liner hanger and liner hanger assembly comprising same |
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| CN113818826A (en) * | 2021-10-12 | 2021-12-21 | 中国石油化工股份有限公司 | Tail pipe suspension well cementation device |
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| Publication number | Publication date |
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| CN105569592B (en) | 2018-05-29 |
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