CN204436364U - Measure the device of the coefficient of sliding friction of drilling rod and sleeve pipe - Google Patents
Measure the device of the coefficient of sliding friction of drilling rod and sleeve pipe Download PDFInfo
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- CN204436364U CN204436364U CN201420680047.2U CN201420680047U CN204436364U CN 204436364 U CN204436364 U CN 204436364U CN 201420680047 U CN201420680047 U CN 201420680047U CN 204436364 U CN204436364 U CN 204436364U
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Abstract
The utility model discloses a kind of device measuring the coefficient of sliding friction of drilling rod and sleeve pipe, comprise: the friction mechanism comprising sleeve pipe and drilling rod, its at the uniform velocity friction also comprised for drilling rod is crept into and is provided the actuator of driving force and the ferrule holder of branch sleeve, wherein, drilling rod passes sleeve and fits with sleeve, and quill is to being located in ferrule holder regularly; Dynamic drilling fluid organization of supply, it is connected with friction mechanism, and the at the uniform velocity friction for drilling rod and sleeve pipe is crept into and provided dynamic drilling fluid; Pressure mechanism, is connected with ferrule holder, and the friction for sleeve pipe and drilling rod is crept into and provided the pressure that reclines; And mechanism for testing, it comprises mensuration first test cell of motive force of drilling rod and the second test cell for testing the pressure that reclines between sleeve pipe and drilling rod.This device can measure the coefficient of sliding friction between drilling rod and sleeve pipe more exactly so that evaluate the greasy property of the drilling fluid between drilling rod and sleeve pipe.
Description
Technical field
The utility model relates to a kind of experimental facilities of oil drilling parametric measurement, is specifically related to a kind of device for horizontal well and the mensuration drilling rod of extended reach well and the coefficient of sliding friction of sleeve pipe.
Background technology
In oil/gas drilling bushing well section, the drilling fluid with favorable lubricating property can reduce the mechanical wear of drilling rod to sleeve pipe, thus extends the application life of sleeve pipe and ensure the safety of downhole drill operation.
For with slipping drilling be mainly creep into mode horizontal well and extended reach well for, close contact between drilling rod and sleeve pipe, the coefficient of sliding friction between drilling rod and sleeve pipe just becomes the most important parameter of appraisal drilling liquid greasy property.But there is no the device that can be used for the coefficient of sliding friction measured more exactly between drilling rod and sleeve pipe in prior art.This is used for slipping drilling being that the horizontal well of mode of mainly creeping into and the lubricity of extended reach well cased well section drilling fluid bring difficulty for evaluation.
Therefore, need a kind of device for the coefficient of sliding friction between drilling rod and sleeve pipe can be measured more exactly, be used for the greasy property of the drilling fluid between drilling rod and sleeve pipe for accurate evaluation.
Utility model content
Technical problem to be solved in the utility model is, there is provided a kind of device measuring the coefficient of sliding friction of drilling rod and sleeve pipe, it can measure the coefficient of sliding friction between drilling rod and sleeve pipe more exactly so that evaluate the greasy property of the drilling fluid between drilling rod and sleeve pipe.
Technical solution of the present utility model is, provides a kind of device with the mensuration drilling rod of following structure and the coefficient of sliding friction of sleeve pipe, comprising:
Comprise the friction mechanism of sleeve pipe and drilling rod, its at the uniform velocity friction also comprised for drilling rod is crept into and is provided the actuator of driving force and the ferrule holder of branch sleeve, and wherein, drilling rod is through sleeve and fit with sleeve, and quill is to being located in ferrule holder regularly;
Dynamic drilling fluid organization of supply, it is connected with friction mechanism, and the at the uniform velocity friction for drilling rod and sleeve pipe is crept into and provided dynamic drilling fluid;
Pressure mechanism, is connected with ferrule holder, and the friction for sleeve pipe and drilling rod is crept into and provided the pressure that reclines; With
Mechanism for testing, it comprises mensuration first test cell of motive force of drilling rod and the second test cell for testing the pressure that reclines between sleeve pipe and drilling rod.
Compared with prior art, the utility model has the following advantages.The friction duty between actual well drilled process middle sleeve and drilling rod can be simulated by the friction mechanism of sleeve pipe and drilling rod, dynamic drilling fluid organization of supply and pressure mechanism.Recorded the power that reclines acted between the motive force of drilling rod and sleeve pipe and drilling rod by mechanism for testing, thus can be used in evaluating the coefficient of sliding friction size between sleeve pipe and drilling rod.The quality of the greasy property of the drilling fluid between drilling rod and sleeve pipe can be evaluated more exactly by the size of the coefficient of sliding friction.Such as, between drilling rod and sleeve pipe, make the drilling fluid that the coefficient of sliding friction in drilling process is little, greasy property is better.
In one embodiment, described dynamic drilling fluid organization of supply comprises:
Store the fluid reservoir of drilling fluid, in it, be provided with the agitator that drilling fluid is stirred;
Delivery pump, is connected with fluid reservoir, is transported in sleeve pipe by the drilling fluid in fluid reservoir; With
Drilling fluid reclamation assembly, reclaims the drilling fluid flowed out in sleeve pipe.The precipitation that agitator can reduce solid phase additive in drilling fluid or component is set at fluid reservoir, thus makes the performance of drilling fluid more balanced.In addition, delivery pump and drilling fluid reclamation assembly make the drilling fluid always having flowing between sleeve pipe and drilling rod in drilling rod drilling process.More realistic operating mode, therefore, the coefficient of sliding friction that test obtains is closer to actual condition.
In one embodiment, described pressure mechanism comprises piston rod and provides the mechanically aided pump of pressure for piston rod, and wherein, mechanically aided pump is connected with the rodless cavity end of piston rod, and the piston rod of piston rod abuts sleeve pipe through ferrule holder.The rodless cavity promotion piston rod that fluid is pressed onto piston rod by mechanically aided pump moves to sleeve pipe, and sleeve pipe moves diametrically thus changes the size of the power that reclines between drilling rod.Therefore, if the power that reclines acted between sleeve pipe with drilling rod is identical, under identical motive force effect, drilling rod translational speed is faster, and the coefficient of sliding friction between drilling rod and sleeve pipe is less.
In a preferred embodiment, the cross-sectional area of the termination area ratio piston rod of described piston rod is large, and described piston rod is connected with ferrule holder movable sealing.The cross-sectional area of the termination area ratio piston rod of piston rod is large, increases the active area between piston rod and sleeve pipe, decreases the local stress of sleeve pipe.Therefore, sleeve pipe is more difficult is worn.
In one embodiment, described ferrule holder comprises the holder body at sleeve and the two ends be fixedly connected with the two ends of sleeve respectively, described sleeve pipe is axially fixedly connected with sleeve pipe, and described drilling rod passes the holder body at two ends and is connected with the holder body movable sealing at two ends.The convenient processing of this structure of ferrule holder, is conducive to the installation of sleeve pipe and drilling rod.
In a preferred embodiment, described drilling fluid reclamation assembly comprises for carrying out the lower the temperature cooling device of process and the compression pump for accelerating the drilling fluid travelling speed after cooling process to the drilling fluid flowed out in sleeve pipe, described cooling device is connected with compression pump, and described compression pump is connected with fluid reservoir.Drilling fluid is recovered to fluid reservoir after cooling process, is recycled.
In one embodiment, the external diameter of described drilling rod is 25 ~ 35mm, and length is 500mm.Close with actual condition, the result that test obtains is more accurate.
In a preferred embodiment, the internal diameter 0.3 ~ 0.8mm larger than the external diameter of drilling rod of described sleeve pipe, the length of sleeve is 300mm.When pressure mechanism does not pressurize, be matched in clearance between sleeve pipe and drilling rod.When pressure mechanism pressurizes, the relative drilling rod of sleeve pipe does radial motion, sleeve pipe have side and drilling rod near, opposite side allows drilling fluid to flow out smoothly.
In one embodiment, described actuator is stepper motor, and the first test cell comprises the thrust pickup be connected between stepper motor with drilling rod and the display be connected with thrust pickup.First test cell test obtains the motive force of stepper motor to drilling rod.
In one embodiment, the second test cell comprise be located at sleeve pipe with the pressure sensor on the rubbing surface of drilling rod, be located at the velocity sensor on drilling rod and the iatron part for being connected with pressure sensor and velocity sensor.Second test cell tests the rate of penetration of the power that reclines and the drilling rod obtained between drilling rod and sleeve pipe.In drilling process, be generally that requirement drilling rod does and at the uniform velocity creeps into.
Accompanying drawing explanation
It is a kind of specific embodiment of the device of the coefficient of sliding friction of mensuration drilling rod of the present utility model and sleeve pipe shown in Fig. 1.
It is the structural representation of a kind of specific embodiment of the friction mechanism in Fig. 1 shown in Fig. 2.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Figure 1 illustrates a kind of specific embodiment of the experimental facilities of the coefficient of sliding friction of mensuration drilling rod of the present utility model and sleeve pipe.In this embodiment, this device mainly comprises: comprise the friction mechanism of sleeve pipe 8 and drilling rod 9, dynamic drilling fluid organization of supply, pressure mechanism 5 and mechanism for testing.Wherein, friction mechanism also comprises the driving actuator 12 of drilling rod 9 and the ferrule holder 7 for splicing sleeve 8.In the present embodiment, actuator 12 is preferably stepper motor.In addition, drilling rod 9 passes sleeve pipe 8 and fits with sleeve pipe 8, is located in ferrule holder 7 sleeve pipe 8 axial restraint.
In a preferred embodiment, as shown in Figure 2, ferrule holder 7 mainly comprises sleeve 7.2 and is connected to the holder body 7.1 and 7.3 of both sides of sleeve 7.2.The holder body 7.1 and 7.3 of both sides and sleeve 7.2 form the shell of ferrule holder 7.Be arranged in sleeve 7.2, sleeve pipe 8 is provided with elastic washer 7.6 in radial directions and between the inwall of sleeve 7.2 sleeve pipe 8 axial restraint.Holder body 7.3 in left side and the holder body 7.1 on right side are respectively equipped with liquid outlet 7.8 and inlet 7.7.Drilling rod 9 is successively through the holder body 7.3 in the holder body 7.1 on right side, sleeve pipe 8 and left side, between the holder body 7.1 on drilling rod 9 and right side, between drilling rod 9 and the holder body 7.3 in left side, all form movable sealing by seal 7.5, to realize the sealing of drilling-fluid circulation system when sleeve pipe 8 and drilling rod 9 recline.
In a preferred embodiment, the external diameter of drilling rod 9 is 25 ~ 35mm, and length is 500mm.Correspondingly, the internal diameter 0.3 ~ 0.8mm larger than the external diameter of drilling rod 9 of sleeve pipe 8, the length of sleeve pipe 8 is 300mm.
In the present embodiment, the pressure mechanism be connected with ferrule holder 7 creeps into for the friction between sleeve pipe 8 and drilling rod 9 and provides recline pressure or the power that reclines.In a preferred embodiment, this pressure mechanism mainly comprises piston rod 10 and provides the mechanically aided pump 12 of pressure for piston rod 10.Wherein, mechanically aided pump 12 is connected with the rodless cavity end of piston rod 10, and the piston rod of piston rod 10 abuts the sleeve pipe 3.2 in sleeve 7.2 through the sleeve 7.2 of ferrule holder 7.Leaking to prevent drilling fluid, between the piston rod 7.3 of piston rod 10 and sleeve 7.2, realizing movable sealing by seal 7.4.Preferably, the cross-sectional area at other position of the termination area ratio piston rod 7.3 of piston rod 7.3 is large.Such structure increases piston rod 7.3 and the contact area of sleeve pipe 8, therefore can reduce the distortion of sleeve pipe 8 contact position.
In the present embodiment, dynamic drilling fluid organization of supply, it is connected with friction mechanism, provides dynamic drilling fluid for drilling rod 9 creeps into the friction of sleeve pipe 8.Dynamic drilling fluid not only plays lubrication, and can drive in drilling process because of fricative heat.In one embodiment, this dynamic drilling fluid organization of supply mainly comprises the fluid reservoir 1, delivery pump 3 and the drilling fluid reclamation assembly that store drilling fluid.Wherein, the agitator 2 that drilling fluid is stirred is provided with in fluid reservoir 1.In a preferred embodiment, drilling fluid reclamation assembly comprises cooling device 14 and compression pump 15.The import of cooling device 14 is connected with liquid outlet 7.8, and the outlet of cooling device 14 is connected with compression pump 15, and compression pump 15 is connected with fluid reservoir 1.
In one embodiment, actuator 15 adopts stepper motor.Thrust pickup 13 is provided with between actuator 15 and drilling rod 9.
In one embodiment, as shown in Figure 2, sleeve pipe 8 with the rubbing surface of drilling rod 9 are provided with strain gauge or pressure sensor 16, drilling rod 9 is provided with velocity sensor 17.
In a preferred embodiment, thrust pickup 13, pressure sensor and velocity sensor are all connected on iatron part 6.
In a preferred embodiment, be connected with flow meter 4 in the outlet of delivery pump 3, the pipeline between delivery pump 3 and friction mechanism be connected with pressure sensor 5.Preferably, flow meter 4 and pressure sensor 5 are all connected to iatron part 6.
In the present embodiment, the annular process of drilling fluid is: be transferred pump 3 from the drilling fluid fluid reservoir 1 and extract out, is transported in ferrule holder 7 through pressure line and inlet 7.7, and creeping into the friction of sleeve pipe 8 and drilling rod 9 provides lubrication and cooling.Then drilling fluid flows out to cooling device 14 through liquid outlet 7.8 and carries out cooling processing, and the drilling fluid after process gets back to fluid reservoir 1 through compression pump 15 conveying.Complete a cyclic process of drilling fluid.
In experimentation, drilling fluid is admitted under the effect of circulation pump 3, the annular space pipeline between drilling rod 9 and ferrule holder 7.After steady flow in the annular space pipeline of drilling fluid between drilling rod 9 and ferrule holder 7, adjusted the size of the power that reclines between drilling rod 9 and sleeve pipe 8 by piston rod 10 and mechanically aided pump 12.Start stepper motor, control drilling rod 9 and do sliding motion in ferrule holder 7, shown by thrust pickup 13 and store the kinetic force of friction between drilling rod 9 and sleeve pipe 8.In addition, pressure sensor and velocity sensor also send the information detected to iatron part 6.According to being sliding coefficient of sliding friction formula: f=μ N, wherein f represents frictional force, and μ represents the coefficient of sliding friction, and N representative simulation drilling rod, at the pressure of sleeve surface, calculates the coefficient of sliding friction between simulation drilling rod and sleeve pipe.Then convert according to the relation between the coefficient of sliding friction and the lubricating coefficient of drilling fluid and obtain the lubricating coefficient of drilling fluid.
Although be described the utility model in conjunction with specific embodiments, but being appreciated that when not departing from scope of the present utility model, various improvement or replacement can being carried out to it.Especially, only otherwise there is structural conflict, the feature in each embodiment all can be combined with each other, and the combined type feature formed still belongs in scope of the present utility model.The utility model is not limited to specific embodiment disclosed in literary composition, but comprises all technical schemes fallen in the scope of claim.
Claims (10)
1. measure a device for the coefficient of sliding friction of drilling rod and sleeve pipe, it is characterized in that, comprising:
Comprise the friction mechanism of sleeve pipe and drilling rod, its at the uniform velocity friction also comprised for drilling rod is crept into and is provided the actuator of driving force and the ferrule holder of branch sleeve, and wherein, drilling rod is through sleeve and fit with sleeve, and quill is to being located in ferrule holder regularly;
Dynamic drilling fluid organization of supply, it is connected with friction mechanism, and the at the uniform velocity friction for drilling rod and sleeve pipe is crept into and provided dynamic drilling fluid;
Pressure mechanism, is connected with ferrule holder, and the friction for sleeve pipe and drilling rod is crept into and provided the pressure that reclines; With
Mechanism for testing, it comprises mensuration first test cell of motive force of drilling rod and the second test cell for testing the pressure that reclines between sleeve pipe and drilling rod.
2. device according to claim 1, is characterized in that, described dynamic drilling fluid organization of supply comprises:
Store the fluid reservoir of drilling fluid, in it, be provided with the agitator that drilling fluid is stirred;
Delivery pump, is connected with fluid reservoir, is transported in sleeve pipe by the drilling fluid in fluid reservoir; With
Drilling fluid reclamation assembly, reclaims the drilling fluid flowed out in sleeve pipe.
3. device according to claim 1 and 2, it is characterized in that, described pressure mechanism comprises piston rod and provides the mechanically aided pump of pressure for piston rod, wherein, mechanically aided pump is connected with the rodless cavity end of piston rod, and the piston rod of piston rod abuts sleeve pipe through ferrule holder.
4. device according to claim 3, is characterized in that, the cross-sectional area of the termination area ratio piston rod of described piston rod is large, and described piston rod is connected with ferrule holder movable sealing.
5. device according to claim 1, it is characterized in that, described ferrule holder comprises the holder body at sleeve and the two ends be fixedly connected with the two ends of sleeve respectively, described sleeve pipe is axially fixedly connected with sleeve pipe, and described drilling rod passes the holder body at two ends and is connected with the holder body movable sealing at two ends.
6. device according to claim 2, it is characterized in that, described drilling fluid reclamation assembly comprises for carrying out the lower the temperature cooling device of process and the compression pump for accelerating the drilling fluid travelling speed after cooling process to the drilling fluid flowed out in sleeve pipe, described cooling device is connected with compression pump, and described compression pump is connected with fluid reservoir.
7. device according to claim 1, is characterized in that, the external diameter of described drilling rod is 25 ~ 35mm, and length is 500mm.
8. device according to claim 7, is characterized in that, the internal diameter 0.3 ~ 0.8mm larger than the external diameter of drilling rod of described sleeve pipe, the length of sleeve is 300mm.
9. device according to claim 1, is characterized in that, described actuator is stepper motor, and the first test cell comprises the thrust pickup be connected between stepper motor with drilling rod and the display be connected with thrust pickup.
10. the device according to claim 1 or 9, it is characterized in that, the second test cell comprise be located at sleeve pipe with the pressure sensor on the rubbing surface of drilling rod, be located at the velocity sensor on drilling rod and the iatron part for being connected with pressure sensor and velocity sensor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420680047.2U CN204436364U (en) | 2014-11-06 | 2014-11-06 | Measure the device of the coefficient of sliding friction of drilling rod and sleeve pipe |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420680047.2U CN204436364U (en) | 2014-11-06 | 2014-11-06 | Measure the device of the coefficient of sliding friction of drilling rod and sleeve pipe |
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| CN204436364U true CN204436364U (en) | 2015-07-01 |
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| CN201420680047.2U Active CN204436364U (en) | 2014-11-06 | 2014-11-06 | Measure the device of the coefficient of sliding friction of drilling rod and sleeve pipe |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106482890A (en) * | 2015-08-27 | 2017-03-08 | 北京环鼎科技有限责任公司 | A kind of test method of indirect measuring instrument suffered thrust in a fluid |
| CN106525310A (en) * | 2016-11-12 | 2017-03-22 | 山西江淮重工有限责任公司 | Device and method for precisely measuring sliding friction force between sleeves |
| CN107389250A (en) * | 2017-09-05 | 2017-11-24 | 上海长园电子材料有限公司 | Plastic pipe friction testing device |
| CN108240964A (en) * | 2016-12-24 | 2018-07-03 | 中石化石油工程技术服务有限公司 | A kind of drilling fluid lubricating tubularpH sensor instrument |
| CN112362454A (en) * | 2020-11-20 | 2021-02-12 | 中国石油天然气集团有限公司 | Device and method for detecting and evaluating physical performance of wear-resistant belt of drilling tool |
| CN112727439A (en) * | 2021-01-07 | 2021-04-30 | 西南石油大学 | Device for measuring abrasion between drill rod and casing |
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2014
- 2014-11-06 CN CN201420680047.2U patent/CN204436364U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106482890A (en) * | 2015-08-27 | 2017-03-08 | 北京环鼎科技有限责任公司 | A kind of test method of indirect measuring instrument suffered thrust in a fluid |
| CN106482890B (en) * | 2015-08-27 | 2018-12-14 | 北京环鼎科技有限责任公司 | A kind of test method of indirect measuring instrument suffered thrust in a fluid |
| CN106525310A (en) * | 2016-11-12 | 2017-03-22 | 山西江淮重工有限责任公司 | Device and method for precisely measuring sliding friction force between sleeves |
| CN108240964A (en) * | 2016-12-24 | 2018-07-03 | 中石化石油工程技术服务有限公司 | A kind of drilling fluid lubricating tubularpH sensor instrument |
| CN107389250A (en) * | 2017-09-05 | 2017-11-24 | 上海长园电子材料有限公司 | Plastic pipe friction testing device |
| CN112362454A (en) * | 2020-11-20 | 2021-02-12 | 中国石油天然气集团有限公司 | Device and method for detecting and evaluating physical performance of wear-resistant belt of drilling tool |
| CN112727439A (en) * | 2021-01-07 | 2021-04-30 | 西南石油大学 | Device for measuring abrasion between drill rod and casing |
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