... makeup to its desired makeup torque (makeup position); Second, linear elastic FEA is performed to compute the alternating stress (i.e. fatigue driving stress) and static mean stress due to makeup and/or other external constant loads; Third, fatigue crack growth of a pre-existing crack-like surface...

... describes the use of an innovative drilling simulator for testing inhibitive mud systems for reactive shale. The effectiveness of inhibitive muds in high-clay shale was investigated. Their impact on a combination of problems, such high torque and drag, high friction factor, and lubricity was also assessed...

... Abstract The accurate makeup of Rotary Shouldered Connections (RSC) is a critical step in optimizing the connection lifetime under complex downhole conditions. The makeup torque value of RSC depends on the friction coefficient of the assembly and the lubricant, which cannot normally...

... connection. Normally an API-Buttress type connector is used; nevertheless, it has been proven in both controlled and field conditions that this connector is not completely adequate for Casing Drilling per se, as high torque capacities are demanded. Apart from that, and due to this condition, the constant...

... lift system sucker rod torque rod stress society of petroleum engineers sucker rod artificial lift petroleum engineer flow rate fluid level rod string selection sucker rod pump stroke length Goodman diagram spe 120681 Efficiency pump condition pump flow rate pump size pump efficiency...

... Abstract This paper reports the performance of a new type of overrunning clutch that has been developed and installed on sucker rod pumping units. The clutch disengages the power-input shaft of the gear reducer and the unit sheave whenever the torque on the shaft is negative. Based...

... works. Different aspects of the phenomenon are discussed including sinusoidal (lateral) and helical buckling and influence of torque. torque derivation drillstring design houston horizontal well friction expression buckled pipe wellbore lubinski miska artificial intelligence pipe...

... Abstract This paper discusses the planning and drilling of Big Prize #2-20 well, drilled by BP America in South Panola Field of the Arkoma Basin in Oklahoma. Wells previously drilled in the field have been prone to problems with lost circulation and stuck pipe, high drillstring torque and drag...

... equipment configuration equipment selection criteria spe 67192 assembly torque equipment selection process requirement bit selection modeling & simulation key factor drilling operation criteria information management inspection frequency spe 67192 stabilizer bha management system...

... that would benefit a customer who needs to mill a window in old or damaged casing and reduce response time to the customers request by having a tool available that could be used in various hole sizes. anchor fixture torque angular displacement element pressure angular displacement upstream oil...

... Abstract The unique geometry of the RotaFlex pumping unit results in a constant torque arm (or torque factor) on most of the upstroke and downstroke. The geometry promotes high electrical efficiencies. These electrical efficiencies can be measured by comparing the work required to raise...

... with the new technology being utilized to drill the highly deviated wells, such as horizontal, ERD, or multi directional, comes the problem of creating excessive downhole drag and torque. All of this drag and torque creates friction, which, in turn, creates wear on the drill string and the casing. Today...

... field torque completion system hanger drilling operation europe government msaf well intervention petroleum engineer requirement Introduction The Judy/Joanne Fields are located in the central North Sea on block 30/7a (commonly known as the J Block of the UK North Sea), 280 kilometers...

... of the counterweights for achieving balance of the pumping unit. Recalling that in a rotating system the instantaneous power is given as the product of torque times rotary speed, it can be seen that the instantaneous torque can be calculated from direct measurement of the power and the speed of rotation: T o...

... ABSTRACT This paper describes new theoretical results for prediction of buckling behavior of tubulars in inclined wellbores. Using conservation of energy and the principle of virtual work improved equations for buckling and post-buckling conditions are derived. The effect of torque...

... system as well as its application to determine the power usage per pump stroke and the gear reducer torque. A simple algorithm is presented for the determination of the counterweight adjustment required to modify the peak torque or the power use. The results of accurately monitored field tests...

... of petroleum engineers electronic database sucker-rod design simulator accuracy equation deud tan united states government tolerance reference 1 polished rod load rod force error tolerance conceptual design state-of-the-art simulator method horsepower petroleum engineer torque conceptual...

... threaded connections on large diameter casing is dicussed. Experience in Initial field trials of the joint Is covered. tolerance piping design rig torque piping simulation upstream oil & gas pipe body finite element analysis casing design new joint design option intemal pressure...

... ABSTRACT Cyclic loads, such as eccentric pumping units, cause a varying torque on the driver. Determination of the most effective induction motor for the load is addressed. Ultra high slip motors as well as NEMA design motors are evaluated. Comparison of operating costs for the same load...

... card conventional sucker rod conventional sucker rod pumping system amperage requirement installation united states government downstroke torque cushioning device upstream oil & gas minimum polished rod load consumption fluctuation dynamic force exerted displacement INTRODUCTION...