CN202900044U - Double stabilizer prebuckling dynamics pendulum drilling assembly - Google Patents

Double stabilizer prebuckling dynamics pendulum drilling assembly Download PDF

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Publication number
CN202900044U
CN202900044U CN 201220608956 CN201220608956U CN202900044U CN 202900044 U CN202900044 U CN 202900044U CN 201220608956 CN201220608956 CN 201220608956 CN 201220608956 U CN201220608956 U CN 201220608956U CN 202900044 U CN202900044 U CN 202900044U
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China
Prior art keywords
prebuckling
stabilizer
drill collar
drill
pendulum
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CN 201220608956
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Chinese (zh)
Inventor
梁红军
狄勤丰
滕学清
李宁
章景城
王文昌
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Petrochina Co Ltd
China Petroleum and Natural Gas Co Ltd
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China Petroleum and Natural Gas Co Ltd
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Abstract

A double stabilizer prebuckling dynamics pendulum drilling assembly is applied to oil field well drilling. The double stabilizer prebuckling dynamics pendulum drilling assembly is characterized by being composed of a drill bit, a prebucking short section, a lower drill collar, a lower stabilizer, a middle drill collar, an upper stabilizer and an upper drill collar, wherein the drill bit is connected with the prebucking short section which is connected with the lower drill collar, the lower drill collar is connected with the lower stabilizer which is connected with the middle drill collar, the middle drill collar is connected with the upper stabilizer which is connected with the upper drill collar, and the upper drill collar is connected with an upper drill rod. The double stabilizer prebuckling dynamics pendulum drilling assembly has the advantages that dynamic pendulum force generated on the drill bit is more than 1.5 times of that of a conventional pendulum drilling assembly, dynamic characteristics of a bottom drilling assembly provided with a prebuckling structure can be utilized, and anti-inclination fast operation is carried out. The double stabilizer prebuckling dynamics pendulum drilling assembly is suitable for mud well drilling and gas well drilling, low in cost, and good in safety.

Description

Bistable device prebuckling kinetics pendulum assembly
Technical field
The utility model relates to the field drilling technical field, and a kind of cheaply peupendicular hole section deviation prevention and fast drilling assembly is provided, particularly a kind of bistable device prebuckling kinetics pendulum assembly.
Background technology
At present, the deviation control with drilling straight well of straight hole is a very important difficult problem of puzzlement drilling well circle always.In very long drilling practice process, the drilling technology personnel are exploring a kind of effective deviation control with drilling straight well technology always.These deviation control with drilling straight well technology comprise: pendulum assembly deviation control with drilling straight well technology, meet the eye on every side beat straight technology, lay particular stress on the anti-oblique technology of twin-feed spiral stabilizer, eccentric anti-oblique technology, the large anti-oblique technology of the pressure of the drill.More than these deviation prevention and fast technology, say in a sense all to belong to passive deviation control with drilling straight well technology category.Since the nineties, the deviation control with drilling straight well technology has had again new progress, the novel initiative deviation control with drilling straight well technology such as VDS, SDD, VertiTrak, PowerV, Smart Drilling have appearred, China also Tarim Oilfield High-Steep Conformation, China Petrochemical Industry's marine strata in south China successful Application VertiTrak, PowerV, Smart Drilling system, and obtained good effect.But because the cost of these technology is higher, just become the major obstacle that these technology are generally applied at home.In the straight well deviation control with drilling straight well drilling process of some high steep structures, the still pendulum of present more use is beaten straight technology.Because the shortcoming of pendulum method is to be difficult to discharge the pressure of the drill, thereby so that bit speed can't be improved, makes drilling benefit be subject to serious restriction.For this reason, large anti-oblique, the eccentric deviation control with drilling straight well technology of the pressure of the drill etc. is arisen at the historic moment.Although the thinking of development of these methods (should belong to kinetics deviation control with drilling straight well technology category) is very correct, because the research of theoretical side and the defective of calculating aspect, so that do not obtain good effect in the application at the scene of these technology.Can say that the anti-oblique problem of straight well remains a difficult problem that needs to be resolved hurrily cheaply.
Of paramount importancely be, gas drilling is just developed rapidly at present, and the gas drilling straight well easily tiltedly problem restrict just the bottleneck of this technical development.Because the complexity of gas drilling, the used anti-oblique method of some mud drilling can not be applicable to gas drilling.This patent not only can provide preferably anti-oblique method, and better pit shaft quality can be provided, and is of value to the subsequent jobs such as setting of casing.
Summary of the invention
The purpose of this utility model is: a kind of bistable device prebuckling kinetics pendulum assembly is provided, utilizes the dynamics of this specific Bottom Hole Assembly (BHA), form larger pendulum force at drill bit, corresponding raising the pressure of the drill is realized that drilling well is anti-oblique to beat again fast purpose.
The technical solution adopted in the utility model is: bistable device prebuckling kinetics pendulum assembly, it is characterized in that, and comprise drill bit, prebuckling pipe nipple, lower drill collar, lower stabilizer, middle drill collar, upper stabilizer and upper drill collar; A described prebuckling pipe nipple is threaded on the described drill bit, lower drill collar is threaded on the described prebuckling pipe nipple, lower stabilizer is threaded on the described lower drill collar, middle drill collar is threaded on the described lower stabilizer, upper stabilizer is threaded on the described middle drill collar, the described upper stabilizer upper end upper drill collar that is threaded, the upper end threaded connection drill stem of described upper drill collar, drilling rod is connected to well head always.
There is the inflection point at described prebuckling pipe nipple middle part, and the bent angle at place, inflection point is 0.5~1.5 °, and described prebuckling pipe nipple is whole processing.
Utilize the dynamics of Bottom Hole Assembly (BHA) to come to provide larger pendulum force to drill bit, realize the deviation prevention and fast purpose.
The external diameter of described drill collar and stabilizer must mate with bit diameter, satisfies requirement of engineering.
Described drill bit is various rock bit or the PDC drill bits that satisfy requirement of engineering.
The beneficial effects of the utility model: the utility model bistable device prebuckling kinetics pendulum assembly, the dynamic pendulum force that produces at drill bit is more than 1.5 times of conventional pendulum assembly.Its great advantage is to utilize the dynamics with the Bottom Hole Assembly (BHA) of prebuckling structure to carry out the deviation prevention and fast operation, and this drilling assembly is fit to mud drilling and gas drilling, and cost is low, safety is good.
Simultaneously, the existence of bent angle can be in expansion borehole diameter to a certain degree; The existence of bistable device has again the effect of revising the borehole wall, and therefore, it is to control hole deviation, raising rate of penetration, reduction operating cost.
Description of drawings
Fig. 1 is bistable device prebuckling kinetics pendulum assembly structural representation;
Among the figure, 1-drill bit, 2-prebuckling pipe nipple, drill collar under the 3-, stabilizer under the 4-, drill collar among the 5-, the upper stabilizer of 6-, the upper drill collar of 7-, 8-inflection point.
The specific embodiment
Embodiment 1: take the used bistable device prebuckling kinetics pendulum assembly of 215.9mm well gas drilling as example, the utility model is described in further detail.
Consult Fig. 1.Bistable device prebuckling kinetics pendulum assembly comprises drill bit 1, prebuckling pipe nipple 2, lower drill collar 3, lower stabilizer 4, middle drill collar 5, upper stabilizer 6 and upper drill collar 7.
A described prebuckling pipe nipple 2 is threaded on the described drill bit, the described prebuckling pipe nipple 2 upper ends lower drill collar 3 that is threaded, the described lower drill collar 3 upper ends lower stabilizer 4 that is threaded, the described lower stabilizer 4 upper ends middle drill collar 5 that is threaded, the described middle drill collar 5 upper ends upper stabilizer 6 that is threaded, the described upper stabilizer 6 upper ends upper drill collar 7 that is threaded, the described upper drill collar 7 upper ends top rod that is threaded, drilling rod is connected to well head always.What drill bit 1 adopted is rock bit.Wherein, the diameter 215.9mm of drill bit 1.The diameter 172mm of prebuckling pipe nipple 2, the bent angle of prebuckling pipe nipple 2 are 1.0 °, and prebuckling pipe nipple 2 is whole processing.The diameter 172mm of lower drill collar 3, length 18m.The diameter 210mm of lower spiral stabilizer 4.The diameter 172mm of middle drill collar 5, length 9m.The diameter 214mm of upper stabilizer 6.Upper drill collar 7 diameter 172mm, length 54m.
Corresponding pendulum force result of calculation, its pendulum force is-0.4845kN.The pendulum force of the conventional bistable device pendulum assembly that adopts at present as a comparison, is-0.3919kN.As seen during gas drilling, the drop angle power of bistable device prebuckling kinetics pendulum assembly is 1.24 times of conventional bistable device pendulum assembly drop angle power.

Claims (3)

1. bistable device prebuckling kinetics pendulum assembly, it is characterized in that, comprise drill bit (1), prebuckling pipe nipple (2), lower drill collar (3), lower stabilizer (4), middle drill collar (5), upper stabilizer (6) and upper drill collar (7); A described prebuckling pipe nipple (2) is threaded on the described drill bit (1), lower drill collar (3) is threaded on the described prebuckling pipe nipple (2), lower stabilizer (4) is threaded on the described lower drill collar (3), middle drill collar (5) is threaded on the described lower stabilizer (4), upper stabilizer (6) is threaded on the described middle drill collar (5), upper drill collar (7) is threaded on the described upper stabilizer (6), described upper drill collar (7) upper end threaded connection drill stem, drilling rod is connected to well head always.
2. a kind of bistable device prebuckling kinetics pendulum assembly according to claim 1, it is characterized in that, there is the inflection point at described prebuckling pipe nipple (2) middle part, and the bent angle that inflection point (8) are located is 0.5~1.5 °, and described prebuckling pipe nipple (2) is whole processing.
3. a kind of bistable device prebuckling kinetics pendulum assembly according to claim 1 is characterized in that described drill bit (1) is rock bit or PDC drill bit.
CN 201220608956 2012-11-16 2012-11-16 Double stabilizer prebuckling dynamics pendulum drilling assembly Active CN202900044U (en)

Priority Applications (1)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106703695A (en) * 2017-01-18 2017-05-24 中国石油大学(华东) High WOB anti-deviation well straightening drill assembly
CN106837174A (en) * 2016-03-25 2017-06-13 泉州臻美智能科技有限公司 A kind of brill deep-well executing agency with drill string for becoming twist-drill head based on double speed
CN106837175A (en) * 2016-04-22 2017-06-13 泉州臻美智能科技有限公司 A kind of directed drilling executing agency for being based on three fast drill bits
CN106939762A (en) * 2016-04-18 2017-07-11 泉州臻美智能科技有限公司 A kind of brill deep-well underground platform of independence energy supply
CN108868607A (en) * 2018-04-11 2018-11-23 上海大学 A kind of gas drilling control wedged bottom portion hole assembly design method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106837174A (en) * 2016-03-25 2017-06-13 泉州臻美智能科技有限公司 A kind of brill deep-well executing agency with drill string for becoming twist-drill head based on double speed
CN106939762A (en) * 2016-04-18 2017-07-11 泉州臻美智能科技有限公司 A kind of brill deep-well underground platform of independence energy supply
CN106837175A (en) * 2016-04-22 2017-06-13 泉州臻美智能科技有限公司 A kind of directed drilling executing agency for being based on three fast drill bits
CN106837175B (en) * 2016-04-22 2018-12-21 绍兴市亿跃智能科技有限公司 A kind of directed drilling executing agency based on three fast drill bits
CN106703695A (en) * 2017-01-18 2017-05-24 中国石油大学(华东) High WOB anti-deviation well straightening drill assembly
CN108868607A (en) * 2018-04-11 2018-11-23 上海大学 A kind of gas drilling control wedged bottom portion hole assembly design method

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