Model predicts drill pipe fatigue in horizontal wells

Model predicts drill pipe fatigue in horizontal wells ...Feb 03, 1997Jiang Wu Maurer Engineering Inc. Houston Equations [42490 bytes] A computer model helps p ...

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Model predicts drill pipe fatigue in horizontal wells

Description: Model predicts drill pipe fatigue in horizontal wells ...Feb 03, 1997Jiang Wu Maurer Engineering Inc. Houston Equations [42490 bytes] A computer model helps predict the endurance limit of drill pipe used in medium and short radius horizontal wells. Drill pipe...Drill-pipe fatigue in rotary drilling of horizontal wells ... (PDF) Fatigue Life Prediction of Drill-String Subjected to Model predicts drill pipe fatigue in horizontal wells

A computer model is described which helps predict the endurance limit of drill pipe used in medium and short radius horizontal wells. Drill pipe fatigue and subsequent failure can be a major Model predicts drill pipe fatigue in horizontal wells How does drilling mud cause wall erosion?How does drilling mud cause wall erosion?The accumulation of fatigue damage leads to the initiation and growth of microcracks in the drill pipe body, subsequent wall erosion, and washout. If the washed-out drill string is not tripped out at the right time, the drilling mud will induce intensive wall erosion eventually resulting in failure.SSC Predicting and Preventing Drill String Fatigue Failure

What causes drill string failure?What causes drill string failure?Regarding the causes of drill string failure, the API Recommended Practice 7G, para. 13.2.1 states Most failures of drill pipe result from some form of metal fatigue. A fatigue which originates as a result of repeated or fluctuating stresses with maximum values less than the tensile strength of the material.SSC Predicting and Preventing Drill String Fatigue Failure What is fatigue and how does it affect drill string?What is fatigue and how does it affect drill string?The accumulation of fatigue damage is due to the reversed variations of the stresses, such as those induced when the drill string rotates in a curved section of a wellbore. The development of fatigue is further accelerated through combined tension and torsion loading.SSC Predicting and Preventing Drill String Fatigue Failure(PDF) Cutting concentration prediction in horizontal and Model predicts drill pipe fatigue in horizontal wells

If the well-bore is not clean efficiently, drilling problems such as low rate of penetration (ROP), bit wear, and stuck pipe may arise (Al-Azani et al. 2019). A high yield point enhances the Model predicts drill pipe fatigue in horizontal wells

A STUDY ON EFFECT OF DRAG & TORQUE ON

IJRRAS 11 (1) April 2012 Bagadi & al. Buckling of Drillstring in Horizontal Wells 124 using a steel pipe (represent drillstring) inside a glass tube as horizontal wellbore. The tests results can be recorded on an industrial computer (Fig (1)).A review on casing while drilling technology for oil and Model predicts drill pipe fatigue in horizontal wells Mar 01, 2019The drill pipe retrieval system is simple but requires static casing string while running the drill pipe in well bore. The wireline operations are more advanced but need permanent wireline unit adjacent to draw-works . Thus, the selection between drill pipe and wireline operation depends upon the well bore condition and drilling economics. (2)A review on casing while drilling technology for oil and Model predicts drill pipe fatigue in horizontal wells Mar 01, 2019The drill pipe retrieval system is simple but requires static casing string while running the drill pipe in well bore. The wireline operations are more advanced but need permanent wireline unit adjacent to draw-works . Thus, the selection between drill pipe and wireline operation depends upon the well bore condition and drilling economics. (2)

Aluminum Drill Pipe Fatigue Analysis International Model predicts drill pipe fatigue in horizontal wells

Dec 22, 2008The fundamental fatigue mechanisms are investigated via laboratory tests in small-scale coupons performed in an opto-mechanical fatigue apparatus. Additionally, full-scale fatigue testes on three aluminum drill pipes were performed. The pipes tested are being used in the horizontal section of some extended reach wells in the Northeast of Brazil.Application of Composite Deflecting Model in Horizontal Model predicts drill pipe fatigue in horizontal wells In horizontal drilling, the 2nd deviated section drilling technology and drilling cost is one of the main problems hindering large-scale application of horizontal wells. In the 2nd deviated section drilling process, in order to control well trajectory and prevent from deviation, a rotary steering drilling tool is Cited by 1Publish Year 2012Author Peng Wang, Tie Yan, Xue Liang Bi, Shi Hui SunNew study shows how to predict accumulated drill pipe fatigueThis paper presents a basic analysis on drill-pipe fatigue and a computer program developed to predict drill-pipe fatigue in rotary drilling of horizontal wells.more The accumulative drill-pipe fatigue damage is determined by drill-pipe bending stresses, rotating revolutions, and drill pipe S-N curves.

Cutting concentration prediction in horizontal and Model predicts drill pipe fatigue in horizontal wells

Apr 27, 2019Improper hole cleaning or drilled-cutting transportation impacts drilling operations. To illustrate, inefficient cleaning of the wellbore can lead to many drilling problems such as low drilling rate (i.e. low ROP), early bit wear and, in the severe cases, a complete loss of the well due to stuck pipe. To understand efficiency in cutting transport in drilling and to provide solutions for the Model predicts drill pipe fatigue in horizontal wells DRILLING TECHNOLOGY - Part III Drillstring fatigue Model predicts drill pipe fatigue in horizontal wells In order to operate at lower stress, we need to address fatigue prevention in the same context we presently use for overload design. For overload design, the drilling engineer (1) predicts the loads the drillstring will need to carry, and (2) configures a drillstring that can carry the predicted loads, with a safety factor to handle uncertainty.DRILLING TECHNOLOGY - Part III Drillstring fatigue Model predicts drill pipe fatigue in horizontal wells In order to operate at lower stress, we need to address fatigue prevention in the same context we presently use for overload design. For overload design, the drilling engineer (1) predicts the loads the drillstring will need to carry, and (2) configures a drillstring that can carry the predicted loads, with a safety factor to handle uncertainty.

Drill String Design - MERLIN ERD LTD - Engineering Success Model predicts drill pipe fatigue in horizontal wells

Aug 27, 2020In the context of drilling, fatigue is the progressive and irreversible damage inflicted on the drill-pipe as it is rotated within a curve one side of the pipe it is bent into tension, with the other side in compression, while the process reverses and repeats for every revolution of the drill-string.Drill-Pipe Bending and Fatigue in Rotary Drilling of Model predicts drill pipe fatigue in horizontal wells The drill-pipe weight usually increases the bending stress and needs to be considered to accurately predict the fatigue damage. Introduction. Drill-pipe fatigue was first studied for drill-pipe rotating in a dogleg wellbore section under axial tensile load. The recent application of rotary drilling medium/short-radius horizontal wells involves Model predicts drill pipe fatigue in horizontal wells Drill-pipe fatigue in rotary drilling of horizontal wells Model predicts drill pipe fatigue in horizontal wells This paper presents a basic analysis on drill-pipe fatigue and a computer program developed to predict drill-pipe fatigue in rotary drilling of horizontal wells. According to the fatigue theory, drill-pipe fatigue damage accumulates until the drill pipe fails. The accumulative drill-pipe fatigue damage is determined by drill-pipe bending Model predicts drill pipe fatigue in horizontal wells

Drillpipe Stress Distribution and Cumulative Fatigue Model predicts drill pipe fatigue in horizontal wells

The cumulative fatigue damage model as defined in API RP7G has been implemented in an advanced torque and drag model, which enables to track any given point of the drill pipe while drilling, such as the transition zone, the tool joints and the drill pipe body. For the first time, it has also been possible to fully track variation of stresses at Model predicts drill pipe fatigue in horizontal wells Drillpipe Stress Distribution and Cumulative Fatigue Model predicts drill pipe fatigue in horizontal wells The cumulative fatigue damage model as defined in API RP7G has been implemented in an advanced torque and drag model, which enables to track any given point of the drill pipe while drilling, such as the transition zone, the tool joints and the drill pipe body. For the first time, it has also been possible to fully track variation of stresses at Model predicts drill pipe fatigue in horizontal wells Drillpipe Stress Distribution and Cumulative Fatigue Model predicts drill pipe fatigue in horizontal wells The cumulative fatigue damage model as defined in API RP7G has been implemented in an advanced torque and drag model, which enables to track any given point of the drill pipe while drilling, such as the transition zone, the tool joints and the drill pipe body. For the first time, it has also been possible to fully track variation of stresses at Model predicts drill pipe fatigue in horizontal wells

Equations predict drill-pipe fatigue in Middle East Model predicts drill pipe fatigue in horizontal wells - CORE

Investigations into the cause. These looked at well designs, particularly individual rig well programs, the planned build rates and the length of horizontal sections. Lubinski's modified equations were used in the fatigue analysis. Lubinski's modified equations can be used to predict drill pipe fatigue damage in horizontal and directional wells.Equations predict drill-pipe fatigue in Middle East Model predicts drill pipe fatigue in horizontal wells - COREInvestigations into the cause. These looked at well designs, particularly individual rig well programs, the planned build rates and the length of horizontal sections. Lubinski's modified equations were used in the fatigue analysis. Lubinski's modified equations can be used to predict drill pipe fatigue damage in horizontal and directional wells.Experimental Investigation and Analysis of Dynamic Model predicts drill pipe fatigue in horizontal wells The buckling of compressed sections of the drill string is typical in extended reach drilling and horizontal well. With the expansion of the application range of horizontal well, the buckling problem of drill string confined in horizontal well is more and more prominent. Buckling can intensify the bending stress and lead to fatigue over time.

FATIGUE ANALYSIS PROCEDURE FOR DRILL STRING -

One or more embodiments may be used to plan drilling operations, in real-time during drilling operations to predict a failure, and/or as post drilling analysis (e.g., analyze a failure that occurred during the drilling) In particular, one or more embodiments manage the fatigue life of a drilling interval.Fatigue Life Prediction of Buckling String with Cracks in Model predicts drill pipe fatigue in horizontal wells Fatigue damage in the rotating drill pipe in the horizontal well of mining engineering is usually resulted from cyclic bending stresses caused by the rotation of the pipe especially when it is passing through curved sections or horizontal sections. This paper studies fatigue life prediction method of rotating drill pipe which is considering initial crack in horizontal well of mining engineering.Fatigue Reliability Evaluation Model of Drillstring in Model predicts drill pipe fatigue in horizontal wells When drillstring rotates through the bending section of horizontal well, the fatigue damage of drillstring will be caused by alternating bending stress. Therefore, a thought to solve the fatigue reliability problem of drillstring in bending section of horizontal well is proposed. The variable amplitude alternating stress is transformed into equivalent fatigue stress, and the fatigue damage of Model predicts drill pipe fatigue in horizontal wells

Fatigue crack growth analysis of drill pipes during rotary Model predicts drill pipe fatigue in horizontal wells

Apr 01, 2017Development of a numerical model predicting drillpipe Fatigue-Life during drilling operations by considering a combination of tension and bending while Fatigue of drill pipes used in horizontal directional drillingFatigue is the most common cause of mini-HDD drill rod failure. It can occur at stress levels far below the normal operating stress in most drill stem components. Fatigue failures occur because the drill rod, after it has been forced into a curved path, undergoes a cyclic bending stress oscillating from tension to compression in concert with the other stress components caused by torque, thrust Model predicts drill pipe fatigue in horizontal wells Fatigue of drill pipes used in horizontal directional drillingTwelve fatigue tests were conducted in this laboratory on the drill pipes donated by Drilltube, Inc. and Texas Pup, Inc. The pipes donated by Texas Pup were used as the preliminary tests to gain experience in the testing methodology. The pipes donated by Drilltube, Inc. were used to construct an S-N curve for this type of drill pipe.

Fatigue of drill pipes used in horizontal directional drilling

Twelve fatigue tests were conducted in this laboratory on the drill pipes donated by Drilltube, Inc. and Texas Pup, Inc. The pipes donated by Texas Pup were used as the preliminary tests to gain experience in the testing methodology. The pipes donated by Drilltube, Inc. were used to construct an S-N curve for this type of drill pipe.HORIZONTAL DRILLING - University of OklahomaAt the higher end of intermediate radius, pipe rotation should be very limited with smaller diameter tubulars only Since the pipe is fatigued, the cost of the pipe is considered as part of the cost of drilling the well When the pipe can be rotated in the lateral, the amount of lateral that can be drilled is increasedHORIZONTAL DRILLING - University of OklahomaAt the higher end of intermediate radius, pipe rotation should be very limited with smaller diameter tubulars only Since the pipe is fatigued, the cost of the pipe is considered as part of the cost of drilling the well When the pipe can be rotated in the lateral, the amount of lateral that can be drilled is increased

Heat Transfer Behaviors in Horizontal Wells Considering Model predicts drill pipe fatigue in horizontal wells

This study presents an integrated numerical model for predicting the temperature distribution during horizontal wells drilling considering the effects of drill pipe rotations, and hydraulic (i.e., circulating pressure losses) and mechanical frictions. A full implicit nite difference method was Heat Transfer Behaviors in Horizontal Wells Considering Model predicts drill pipe fatigue in horizontal wells model to predict the circulating temperature of horizontal wells, but ignored the effect of hydraulic friction. The work completed by Li and Liu [17] on the temperature of horizontal wells included information on the heat source of viscous dissipation, which was similar to the hydraulic friction in drilling uids and other mechanical frictions.Hole Cleaning Prediction in Foam Drilling Using Artificial Model predicts drill pipe fatigue in horizontal wells Foam drilling is increasingly used to develop low pressure reservoirs or highly depleted mature reservoirs because of minimizing the formation damage and potential hazardous drilling problems. Prediction of the cuttings concentration in the wellbore annulus as a function of operational drilling parameters such as wellbore geometry, pumping rate, drilling fluid rheology and density and

Model predicts drill pipe fatigue in horizontal wells Model predicts drill pipe fatigue in horizontal wells

Feb 03, 1997Jiang Wu Maurer Engineering Inc. Houston Equations [42490 bytes] A computer model helps predict the endurance limit of drill pipe used in medium and short radius horizontal wells. Drill pipe Model predicts drill pipe fatigue in horizontal wells New study shows how to predict accumulated drill pipe fatigueThis paper presents a basic analysis on drill-pipe fatigue and a computer program developed to predict drill-pipe fatigue in rotary drilling of horizontal wells.more The accumulative drill-pipe fatigue damage is determined by drill-pipe bending stresses, rotating revolutions, and drill pipe S-N curves.People also askWhat causes drill pipe failures?What causes drill pipe failures?Most failures of drill pipe result from some form of metal fatigue. A fatigue which originates as a result of repeated or fluctuating stresses with maximum values less than the tensile strength of the material. Fatigue fractures are progressive, beginning as minute cracks that grow under the action of fluctuating stress.SSC Predicting and Preventing Drill String Fatigue Failure

Research Article A New Model for Predicting Dynamic

movement of drill pipe is considered to be one-dimensional, compressible, and transient. In order to predict the surge pressure caused in the horizontal well drilling process, Sun etal.[ ] created models for predicting surge pressure based on the general theory of hydrostatic drilling mud mechanics andspeci callydescribedthe Model predicts drill pipe fatigue in horizontal wells SSC Predicting and Preventing Drill String Fatigue Model predicts drill pipe fatigue in horizontal wells Apr 24, 2018Microcrack Fatigue Development in Drill Pipe. Microcrack fatigue formation and propagation life in the drill pipe is described in detail in the Fatigue of Drill string State of the Art (Oil & Gas Science and Technology Rev. IFP, Vol. 57 (2002), No. 1, pp. 7-37) 1. It can be roughly divided into 3 stages (Fig. 2):The American University in Cairo School of Sciences and Model predicts drill pipe fatigue in horizontal wells Multiaxial Fatigue of Drill Pipes under Non-Proportional Loading by Model predicts drill pipe fatigue in horizontal wells In 1990 only less than 10% of wells drilled in USA were horizontal wells, -2- by 2011 50% of drilled wells were horizontals [2]. In 1975, a well with measured depth Model predicts drill pipe fatigue in horizontal wells Figure 1.2 Drill Pipe and Tool Joints Connection [4]

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