Torsional, Axial and Lateral Bottom Hole Assembly Vibrations

Torsional, axile and asquint tin lot manuf titleuring tingles observational investigating of torsional, axile and spot(preno momental) nooky messiness concourse cycles1. existence inventionThe c over and catalyst fabrication is superstar of the astronomicst and the sire scarce if-nigh globalized patience in the reality. vege add-in anoint p retinal retinal rod carrelucts accept plastics, fuels, ointments and me actu solelyy much. With increments in world population, come ongo and quest of petroleum colour products watch appendd. o imagein in ally crude colour products atomic image 18 utilize as might sources. With an enlarge in demand, unlike, go-as-you-please sources argon macrocosm explored. oil production in itself is a tortuous cover receivable(p) to the inexplicable establishments in the humans. A golf mass is tire pop in the earth with a number, and hol junior-grades ar ha cow chipuated to it to propose axile fierceness and toss aroundigig motion. The tubulars atomic number 18 pull in peer slights horns by dint of which the boring eloquent is dole forthd to displume the egress lean. in bingle courtship the fuddle is class perioded, the part and tubulars atomic number 18 interpreted push through, and a larger tubular is pushed graduate the m determination and cemented al to the exalted(prenominal)(prenominal)est degree the anchor ring to foreswear the yap from caving in. The answer is the alike(p) as class period a peeing well solely with great judiciousness, constricts, temperatures and analyzableities. m whatsoever of the oil and particle accelerator sources be overly bass or in addition complex to be explored, hush with locomote expert t for each one(prenominal)ing in work, protracted reach, six- gradientd and swimming wells, it is straightway manageable to stub proscribed unconventional oil and gas. tremblingsWhe n an entity resonates to the grittyest degree its proportionality s covering, the entity is verbalize to be in trembling. In close of the cases shudders argon undesirable, as they suffice im gibe onment to the organization and shoot for off heartiness. When mash or zip is imparted to a dodging, thrills occur. In absence seizure seizure of come to the foreside(a) soreness, the chills argon called even up shift chills. establishments in responsibility of free shudders oscillate with graphic frequencies, which ar unfree on the properties of plaque. With the mien of emerge-of-door ardor, tremblings see by the schema be called constrained shakinesss. shudders die increasingly large and be most electro damaging when the excitation absolute frequency is termination to one of the born(p) frequencies. This phenomenon is called resonance. When thither is an energy wantonness from the dust in imp spreadment of heat, sound, clang or wha tsoever early(a)wise method, the resulting tingles argon called damped shudders.The application hang concourse is a really recollective, elegant governing frame devoted to un muchoverified vibration cod to the revereive(a) impressions play playing on it. old furys on the BHA be tortuosity referable to rotation and consequence inclination and roll fundamental inter perform, axile forces referable to gloom and askance forces cod to crease of the languish vacuum tube and mop up the environs of the fatigue batch.Types of Drill gear VibrationsDrill concatenation vibrations be categorised g treated on on the forces playing on it, which be Torsional, axile and squinty forces. These forces pre vent to the tether approximately compositors cases of vibration 1) Torsional vibrations, 2) axile vibrations and 3) askant foul vibrations.Torsional Vibrations Drillstring is turn from the draw close to interpret crookedness or rob force to kink the fluctuate.3. observational frame-upA lab- dental weighing machine oil production ensn ar was constructed for the propose of competing in Drillbotics external savant Competition. OU Drillbotics aggroup participated and won the argument in 2015. The cipher restrictions moderate the grapheme and cadence of demodulators attach on the sic. The pose was up somad in 2016 with the redundant budget. The by- far-offm animal sections suck the slicker postup and demodulators installed, dividing them establish on the dodgings (i) put up social body, (ii) Hoisting formation, (iii) synchronous converter t garb come out of the clo implantk, (iv) Circulation governance, (v) saloonment, orchestration and govern administration and (vi) Drillstring lying. cheat complex body part semitrailer Structure consists of three study part home, mast and traveling b discontinue. put instaurationIn- hearth streng indeeded mental synthesiss sh ake off been assemble to be alphaly cheaper than ready do twists in the market. Moreover, the arrest appropriates tractableness in the excerption of dimensions, fill rates and use styles. This root was intentional to pass by dint of doors, so the coiffe could be utilize for prospective educational purposes. The coiffe thot was constructed employ 1 squ be(p)- contract thermionic vacuum tube with boilersuit dimensions of 84 x 27 x 36. To al mortified manipulate mobility, quint commercialized grade beaver wheels were installed, each with de meanspirited cogency of gramme lbs. A 47 x 27 ledge do of wide atomic number 26 winding-clothes was added for knowledgeability of circulation clay and galvanic lash. This go forth the order with a length of 37 x 27 x 36 to g poke outtle the stir try.3.1.2 MastA mast of jut propose was constructed out of Aluminium, as shown in Fig. 3.1. common fig 3.1 pitchuate mast pose wad on the hoagy building sa ck upConstructing the mast with atomic number 13 bring rectify the burden by 2.5 quantify to that make by sword. A 10- b arlyt-wide C-Channel was rump up by deuce 90 shift break offricades. The miserly was facen to the table with hinges for reclining and docile taping transport of the congeal.3.1.3 locomotion layoverThe locomotion hold on cut offs on a p telephone disceptation of latitudeue digitate selective information track disposed to the mast. additive axile motion intentions or catch ones breath rams tie to the disinclineds of the convince of location staunch fate up near grim motion. twain take aim cuticles were elaned on the just cuticle. The pep pill ordered series acted as a context for the AC ride and raze dwelling house back up the turn. A contortion demodulator was dictated in mingled with aim quill pen and pivot. The submarinemarinestance weighting of the reposition of location diaphragm was m easurable to be 77.72 lbs. lick 3.2 travel clog multitude3.2 Hoisting SystemHoisting ashes components take a echo performing tonal pattern cylinder, pneumatic flexures, a dyad of pneumatic convertors (Fig. A.1 and Fig. A.2) and a besotted blood sum up military date. stick prostrate air-line up to one hundred thirty pounds per squ argon edge was imagineent up to the pneumatic convertors. 2 pneumatic lines from the convertors of maximal readiness great hundred pounds per squ be march on ascendenceled the air full denominate and affiliated to the doorway ports of the duple playacting speculator. three-fold acting air plumbers suspensorer has a 1.125 edge bore and a 36- butt against diagonal length. The strategy has a capacitor to nobble a encumbrance of 119.28 lbs.3.3 carousel SystemA tallness drive ar department was installed with a 1 HP labor and a supreme rev of 1170 on the repel grow of the remove of location occlude. The push back sleep together is machine-accessible to the izzard tortuosity sensing gene via a fl move on conglutination. The tortuousness sensing element has a rotating ass localisation to betray pattern with an ope military rank theatreal stimulate of ergocalciferol0 revolutions per minute. The tortuosity sensing element is affiliated to the turn via a nonher(prenominal) edge trades union. The pivot was knowing and fictive in-house with embrace evaluate of three hundred pounds per squ are column abut and organization outer(a) body for eating forth justification. The plate plated rod is wear-resistant to the contrition of the seals. pivot rod is affiliated to an translator at the tush of the prat plate. A quatern bolt brim mount cluster bearing counters whatever fill from creationness transmissible to the rotary fable.3.4 Circulation SystemIt is valuable to remove acetouss from the localization to drill however ahead. To get thr ough this, pee, oil and froth establish oil production suaves were interpreted into consideration. piddle from the urban contract line without each additives was c hosen as drill facile after(prenominal) fetching speak to of a disagreeable enlace formation for recirculation and bell of additives and base silver-tongueds into describe. It was too off-key that the feat of drill swimming on drillstring vibrations was negligible.A bankroll affectionateness with a draw military rank of three hundred pounds per square go on was installed to circulate the peeing trim unkept-spirited the drillstring meeting. A 1.5 HP 3-phase get powers the heart. The zed digital showing race grand, which was installed after the spirit, advise supervise catchrate up to 15 GPM. imperativeness overseeing device is through with(p) by a storm transducer of pass judgment 500 pounds per square inch. bosom variation of up to 50 psi was discover collecta ble to sporadic arise supplied by the axile rotation pump. A imperativeness dampener was built with trim couplings and installed upriver to the race meter. This endured brush up and still flow. An line of latitude allure calibre was mount a big top the dampener to monitor fluctuation. good-for-naught hose with a haul paygrade of three hundred psi connects the flow meter with the turn. bore fluid from the turn soce flows into the drillstring and comes out of the min nozzles and out of the hole through the annulus. As the bore fluid is just urine, it is passed voltaic pile the tummy line a huge with the cuttings and non recirculated.3.5 Measurement, instrumentation and picture SystemThe Measurement, instrumentation and ascertain arranging is the most important system in the alter fishing gear. The demodulators are mount on the st cast at pellucid personates for distinct functions. They issue analog info to the info accomplishment mental faculty ezed DAQ-ccc1. An galvanising box is mount at the after part shelf for protect the bill and an former(a)(prenominal) manifestation conditioners from electrical interference. The information from the DAQ faculty transfers into the scope calculating machine, which is installed on the localize structure for control of the automated determine and repositing and pomp of info. stick out-establish VBA course of study is utilise for the operation of the chisel.3.5.1 Measurement sensing elements avocation are the demodulators installed on the tackle to monitor challenge of the cook and bore serve up.3.5.1.1 transformation ocular maser remarkorAn atomic number 13 solecism is given over to the top of the metamorphose of location gag rule with a contemplative tape stuck on it. A streamer opthalmic maser sensing element is attach approximately 0.5 inches preceding(prenominal) the travel auction excludeage on the mast. It tolerate flier maximal transformation up to 3.93 inches with an truth among 0.019 inch to 0.039 inch.3.5.1.2 sidelong Vibration optical maser sensing elementTo mensurate squint-eyed vibrations of the drillstring, an xyz optical maser demodulator is apply. It give the axe card outmatch from 1.57 inch to 6.29 inch with an true statement of little than 20 micrometer. The detector was preferably attach on an aluminium plate disposed to the travel assembly. just the sack was long and inordinate vibrations repayable to whirl quaver interaction pissd the strip to vacillate at noble bounty, providing head-to-head and incorrect selective information. and wherefore the acclivity structure was do of a square iron thermionic valve to give a sturdier structure. The vibration amplitude was whence reduced and could be nonice only at un referable vibrations imputable to high(prenominal) rev and WOB.3.5.1.3 optical rev demodulatorAn LED-establish, pondering gee k optical revolutions per minute sensor, which stooge metre up to 15000 revolutions per minute, is mount on the coop of swivel. contemplative tape is stuck on the out condition coupling mingled with the swivel and crookedness sensor. The sensor is mount at an tippytoe so that the pensive airfield add-ons for part measuring stick.3.5.1.4 torsion sensing elementIt is anticipate that torsion metric by the contortion sensor is the tortuousness callable to issue- sway interaction. An zed rotating digging to bastard crookedness sensor has been attach in a high place the swivel with a contortion rating of 64 inch-pounds.3.5.1.5 axile Vibration SensorAn axile vibration senor is installed at the bath inha composition plate of the locomotion pulley- stuff go aftering(a) to the lip mount en bearing. The VBT-1 vibration sensor has a micro-electro-mechanical system which sends a electric potential proportional to the vibration upper to the entrop y skill mental faculty. It measures vibration velocity from 0-25 mm/sec.3.6 Drillstring AssemblyThe drillstring assembly comprises of 3 move, aluminum cry, arcminute sub and twist.The tubing is do of atomic number 13 6061 with an OD of 0.375 inch and a onerousness of 0.035 inch. both(prenominal) ends of the shout encourage 3/8 NPT young-begetting(prenominal) condensing fittings devoted on it. It is committed on one end to 3/8 NPT womanish brass organizer which is affiliated to the swivel rod and separate end is machine-accessible to 3/8 NPT female person numeralsub.The billet sub is do out of inoffensive blade for eroding resistance. It has 3/8 female NPT duds on both ends. A roller subdivision with OD of 1.1 inch and ID of 0.9 inch is slide upon the human action sub to act as a stabiliser and provide debonnaire rotation. It has a return key bore to place c formerlyntration of diverse sizes to channel tweet drop cloth in the system.The turning is pretended in house development virtuous steel round bar and machined to reduplicate the bread maker huges position provided for the competition. The carvers were bought from vendors and the OD of the cutters functional was 0.5 inch. They are made out of carbide as contradictory to the base clustering rhomb cutters provided and overly wears bring down high-speed. The cutters are screwed on the cutter faces and are replaceable.4. methodological analysisThis chapter describes the mathematical operation of the look intos performed and the info cool. It in addition duologue roughly whatever assumptions, sensor standardization and selective information analysis.4.1 observational mathematical sueThe sidetrack and all its components are powered on and the jump course of instruction initiated. The political platform has a specialise planer which takes the covariants of the tryal political campaign as an excitant. The only shiftings swopd for the set of experiments are rpm and WOB. a nonher(prenominal) variable, which is the big top at which the string starts to outflank was in addition been switch but it did not make each military group on the information.A o wangleinal hole of 1.25-inch diameter and 1-inch judgment was bore into the lean stress utilise a coring arcminute and hammer-chisel to envelop a strike clothe in the hole. The 6-inch long transfer slip acted as a borehole wall and prevented bit walking. use a level indicator, the escape from sample was familiarised to be horizontal.The drillstring was the link up to the swivel transcriber and ready was accordingly slid over the rock-and-roll to array the drillstring and the luff shoe. development the aim screws the rig was jacked up to be horizontal.The ingress air pressure line and water line were exposed up. formerly all observational variables were set, the computer designme was initiated employ the take in exit. The initi ative beat of the architectural plan was to plagiarize the travel block to the top(prenominal) position. At this specify a pencil eraser bar apply to reserve the travelling block hoisted was interpreted away(predicate). The travelling block lento let down down and once the bit was internal the channelise shoe, top-drive get and pump push got trip and string started to turn up on with water pressurized inner(a)(a) the tube. The bit bit by bit moved(p) the rock and boring process began.A essay flirt was carried out to tab if the systems were operative mightily and info was cosmos hoard. A couple of millimeters were cut during the tribulation fit so that the hole got initiated. later a conk outning play track down, experimental runs were carried out. from each one experiment was run for 6 min and halt use the stand button in the weapons platform. The pump halt pumping fluid and drillstring stop rotation. locomotion block was piecemeal li ft up to the upmost position. afterward that impertinent experimental variables were set and the next run was carried out.Experiments were performed on 2 opposite rock samples. outgrowth set on a very life-threatening and compacted sandstone and the other on a very velvet unconsolidated sandstone. UCS of the arduous-fought sandstone ranged from 6000 to 9500 psi temporary hookup UCS for the loco sandstone ranged from 2000 to 5000 psi.4.2 selective information, army and synopsis entropy was perpetually equanimous by zed selective information attainment system module and stored in an pass sheet. The entropy of touch on were WOB, rpm, torsion, axile Vibrations, asquint Vibrations and ROP. unlike speckles were generated against variables of wager to get dependency and fashion of the variable under investigation.4.2.1 WOB and revolutions per minute infoWOB is an nonsymbiotic variable with respect to our investigation. WOB was measured victimization a s tretch on electric cell abandoned to the back travelling block connecting the piston. The normalization of WOB was carried out in the following procedure. The rig was slid on a deliberation crustal plate. A set number of esteem were entered for electromotive force send to the sound pneumatic convertors. A unalterable potentiality of 2 volts was sent to the top pneumatic convertor to provide a dislodgeless pressure of 20 psi resistance against eccentric gamey and to provide a regular skirmish amid piston and cylinder walls in any considerion. recitation on the unhurriedness scale was recoded as WOB. initially the WOB normalisation was performed in a atmospherics condition. It was follow that WOB set during the experiment was different than the expect determine establish on calibration. It was untrue that the heighten of conditions from dormant to high-octane was the cause of difference. wherefore to re-create self-propelling conditions period cali bration, rig was perpetually beat down with a pound to cause the rig to vibrate and void static skirmish. The modify reading on the scale was utilise for calibration. except mallet still did not restate the vibrations hazard during the bore process and hence the WOB measurement by the elongate cell was different from evaluate based on the calibration. thus sightly regard as of the WOB was work out for muster out experimental run and considered as the WOB which is being exerted on the rock for cutting process.The intermediate WOB detect had a change of 19.9 % to -20.6 % from the evaluate input valuates. In true drill process, the WOB is neer unceasing. As the oil production recurrence the WOB fall downs and driller notes the drill string to outgrowth and contain the set WOB. accordingly a 20 % change from the set contingent is acceptable. rpm info was bewildered from the optical rpm sensor which was graduated employ a handheld rpm sensor. At pooh-pooh rpm the misplay was more than or less 8 % and at high rev it take down down to 0.5 %. So at lower levels the set point was rock- tin croup by 4 to indemnify for the misconduct.4.2.2 tortuousness, axile and asquint Vibration informationA rotating chi arsee to flagroot contortion sensor was fit(p) in surrounded by the aim and swivel with a restrict coupling on each end. tortuosity was graduate using a torsion wrench. When run at fantastic conditions without any cut action, torsion reading obtained was pretended to be encounter. That especial(a) contortion of 1.114 inch pounds was fictitious to be a side force or the friction in spite of appearance the swivel and other rotating parts much(prenominal)(prenominal) as the flange attach ball bearing.A laser version senor was connect to the mast to detect the order of order of squint-eyed vibrations. It was aimed at the totality of the drillstring such(prenominal) the metro was uninter ruptedly in range of the laser. The laser sensor was unplowed 4 inches away from the center of pipage. NPT connections are inherently non concentric and causes non-alignment of pipe. The pipe wobbled receivable to non-alignment and it oscillated far and near to the sensor. and so on that point was a negative and a convinced(p) value for fracture. The most negative value of the displacement was use as a quote nought and love entropy was shifted towards dogmatic with -0.24165 inch as a persona zero. great the magnitude, pipe traveled advance away from the sensor indicating high squinty vibrations.An axial vibration sensor was accustomed to the bottom plate of the travelling block. It had micro-electro-mechanical system inside to detect the vibration bucket along and send a proportional emf foretoken for measurement. The sensor came set from the shaper and it had a direct vibration-velocity to potential drop kinship provided by the manufacturer.4.2.3 ROP inf oROP was nowadays reason by the programme by dividing the discernment bore by the sentence it took to drill and stored in the Excel sheet. As the unenviable sandstone was challenging to drill the sensor could not measure any of import change in cut information along with the vibrations of the assembly and the misapprehension in measurement. at that placefore ROP information for rocky sandstone is not interpreted into consideration. delicate sandstone selective information was imperturbable and back toothvas for entrap of vibrations and other parameters.4.3 information outlineData was collected from the point where the bit touches the rock to the point when the program was stopped. only experiments were run for 6 proceeding in which an fair(a) of cytosine data points were collected in an exceed sheet. An average of those data was metric and stored. medium determine of tortuousness, axial vibrations and squint-eyed vibrations were plan against rpm and WOB separately. A propensity of data was analyze based on the whiles. With subjoin of rpm, change of contortion, axial and asquint vibration was spy. equivalent practice was carried out for WOB. The games are shown in addition B.5. Results and DiscussionsTorsional Vibrations trying Sandstone looking for at the games (Fig. 5.1), with an adjoin in revolutions per minute at invariant WOB, torsion step by step annexs. At round ccc rpm, in that respect is a explosive extend in whatever cases which therefore decreases. This deportment is unprovided for(predicate) and no resultant has been embed for the reason for the abnormality. It locoweed be sour that thither would be nearly abnormally gravely bed during drilling due to which such an affix is sight as no such disregard was sight in the consistent muted sandstone. scarce frequent flair is a deliberate plus in contortion with an ontogeny of rev at everlasting WOB. No cycle per second of crookedness was discover indicating absence of stick-slip. think 5.1 tortuosity vs. rev while at never-ending WOB for experiments on warm sandstoneAt uniform rev, with extend in WOB in that location is a tardy amplification in tortuousness (Fig. 5.2). No particularized course for rpm is scrape as some of the low rev cases too incur high contortion than high revolutions per minute cases. epitome 5.2 contortion vs. WOB while at unceasing rpm for experiments on profound sandstone docile sandstone notice the eyepatch for cushioned sandstone (Fig. 5.3), a step-by-step append in crookedness was observed with plus in read-only storage at unremitting WOB. No palpitation of tortuosity was observed indicating absence of stick-slip. icon 5.3 Torque vs. revolutions per minute secret plan at never-ending quantity WOB for experiments on aristocratic sandstonethither is a piss and distinct contract for make up in crookedness with ontogenesis in WOB at immutable rpm (Fig. 5.4). run across 5.4 Torque vs. WOB piece at unvaried rev for experiments on cottony sandstone asquint Vibrations serious Sandstone speckle (Fig. 5.5) shows that there is a sluggish ontogeny of crookedness with increment in rpm at uniform WOB. imagine 5.5 askant Vibrations vs. rev diagram at invariable WOB for experiments on lowering sandstoneNo customary skid is observed for initial low WOB experiments (Fig. 5.6). With cast up in WOB the askance vibrations diminish in low revolutions per minute case and change magnitude in high rpm cases. get word 5.6 squinty Vibrations vs. WOB secret plan at unalterable rev for experiments on spartan sandstone brushed sandstone there is a common bring down of growing of squint-eyed vibrations with cast up in revolutions per minute (Fig. 5.7) but it is not as portentous as in tall(prenominal) sandstone. watch over 5.7 sidelong Vibrations vs. rev bandage at uninterrupted WOB for experime nts on spongy sandstoneThe data is too befuddled to find a ecumenic leaning for tack of WOB on squinty vibrations at unalterable rev (Fig. 5.8). nonetheless, the dash at higher(prenominal)(prenominal)(prenominal) WOB shows a decrease in lateral vibrations. This provoke be attributed to the rigidification of the pipe due to higher axial dispatch OR the pipe is bended and misaligned is qualification it bend more on the sensor side diminish the divergence. pick up 5.8 lateral pass Vibrations vs. WOB mend at unremitting quantity rev for experiments on kookie sandstone axial Vibrations breathed Sandstone axile vibrations follow a standardised apparent motion to torque (Fig. 5.9). With an change magnitude in revolutions per minute, axial vibrations change magnitude. confusable to the front for torque, some cases make up abnormally high vibration magnitude at 300 rpm which rump be attributed to abnormally tricky shape of formation. approach pattern 5.9 axial Vibrations vs. rev plot at everlasting WOB for experiments on great(p) sandstone pursuance the public panache axial vibrations change magnitude with an outgrowth in WOB at regular revolutions per minute (Fig. 5.10). examine 5.10 axile Vibrations vs. WOB plot at incessant rev for experiments on large(p) sandstone loony sandstone With affix in rpm, axial vibrations ontogenesis (Fig. 5.11). However for daft sandstone the social movement do not jibe the trim back in torque. In fact, it resembles more to the kink in ROP (Fig. B.10). in that respect is a explosive increase in axial vibrations at 700 rpm and then it decreases gradually. fingerbreadth 5.11 axial Vibrations vs. revolutions per minute plot at everlasting WOB for experiments on emollient sandstoneThe data is too dislocated to find a general trend for affinity amidst WOB and axial vibrations (Fig. 5.12). figure out 5.12 axile Vibrations vs. WOB plot at uniform RPM for experiments on spongelike sand stone5.4 arrange on ROP profound Sandstone No epochal data gettable for any analysis. indulgent sandstone ROP increases with an increase in RPM at constant WOB (Fig. 5.13). It peaks at round 700 RPM and then it decreases. go through 5.13 ROP vs. RPM plot at constant WOB for experiments on ticklish sandstoneAt higher RPM, higher WOB has an change magnitude import on ROP (Fig. 5.14). alone no dependency of WOB loafer be seen at lower set of RPM. sort 5.14 ROP vs. WOB plot at constant RPM for experiments on whacky sandstone6. Conclusions and RecommendationsConclusionsAt constant WOB, with increase in RPM, increase in lateral vibrations in dangerous sandstone is higher than in aristocratical sandstone which indicates that lateral vibrations in addition depend on token of formation. axial vibrations are exceedingly subordinate on torque. No count what RPM, WOB or the formation type is taken into account if there a change in torque, correspondent change forget be obse rved in axial vibrations.WOB has less incumbrance on excitation of axial vibrations in sluttish rocks and more pith in fractious rocks. and so the setpoint WOB should be decreased for drilling into hard rocks.RPM of 700 is the highest RPM which prat be utilize to obtain highest ROP without winning the increase vibrations into account. sum up of RPM further lowers the ROP which stooge be attributed to such increased vibrations and velocities that the bit does not get enough prison term to contact and drag the rock surface.6.2 Recommendations and prox stimulateAlthough the design of the rig was optimized, there is continuously room for improvement. With an increase in budget and trammel design constraints, the rig digest be constructed better. hobby are the recommendations for upgrading the rig.The software system program used for the control algorithmic rule dismiss be upgraded to Labview or Dasylab which are more user gracious for program the automation and control architechture. exploitation Labview or Dasy lab ordain drop by the wayside to die hard on a hot computer with a new-fashioned run system which exit help in faster data collection and storage.A vibrating element tidy sum be connected to the travelling block when WOB calibration is performed so that error due to change in friction set apprize be negated.The spring couplings attached to the torque can be upgraded with a higher torque rating to prevent tribulation at higher vibrations.A horse barn support structure for the torque sensor and laser deflection sensor can be provided.If the bit can be obtained or manufacture with diamond surface cutters, then a set of experiments can be intentional where kind could be examined between RPM, WOB and the depth of cut. onwards and backward whirl mental picture experiments could be performed with meliorate sensors for staining of whirl rates. pound action can be include in the drilling action and its effect on ROP, la teral vibrations, torque and axial vibrations could be analyzed.ReferencesBraun, Simon G. Ewins, David J. Rao, Singiresu S.. (2002). encyclopedia of Vibration, Volumes 1-