Drilling and Production Practices To Mitigate Sucker Rod/Tubing Wear-Related Failures in Directional Wells

Matthews, C.M.; Dunn, Lisa

doi:10.2118/22852-pa

Cited by 11 publications

(2 citation statements)

References 2 publications

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“…As the research progresses, the researchers have found that there is a considerable deviation between the theoretical buckling deformation of the tube column and the actual occurrence of buckling deformation [16,17]. Researchers with different initial conditions are able to obtain different calculation results for the tubular string buckling.…”

Section: Introductionmentioning

confidence: 99%

Study on Sinusoidal Post-Buckling Deformation of Coiled Tubing in Horizontal Wells Based on the Separation Constant Method

et al. 2023

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In this paper, a set of partial differential equations considering the dynamic effects of the coiled tubing (CT) is established based on the bending theory of slender beams considering the axial loads. The analytical solution of sinusoidal deformation with the time term is obtained. The critical load of coiled tubing during sinusoidal buckling and the change of half-wave number during sinusoidal post-buckling are studied through the introduction of the necessary conditions, solution and the separation constant. The contact force of coiled tubing with sinusoidal post-buckling on the horizontal well wall is analyzed. The results show that the critical load for sinusoidal buckling of fixed-size CT is related to the section angular acceleration coefficient. The half-wave number produced by the sinusoidal post-buckling bending of the CT gradually decreases during compression. The contact force of the deformed CT to the borehole wall is related to the compression speed of the CT. By introducing the dynamic term and the separation constant, this research model can provide a theoretical basis for studying the transformation of the CT from sinusoidal buckling to helical buckling.

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Section: Introductionmentioning

confidence: 99%

Study on Sinusoidal Post-Buckling Deformation of Coiled Tubing in Horizontal Wells Based on the Separation Constant Method

et al. 2023

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“…Run Times will be conservatively increased by a maximum of 3 times the life even though the field test showed 4 to 5 times the life, 3. Maximum run times will be further limited to a conservative 3.5 year life. Thus, a well with a 1.75 year run time without a rotator will only have economics based on doubling the well's run time, 4.…”

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confidence: 99%

Manual Tubing Rotation Reduces Rod Pumping Failures by 76%

Hart

2003

SPE Production and Operations Symposium

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A large Illinois oil field implemented the use of a new low cost manual tubing rotator in 25 marginal oil wells to reduce wear failures. Wear failures were indicated by "tubing splits" (Mechanical Wear 1 ) or "corrosion occurring along a straight line due to corrosion inhibitor being wiped off from wear (Corrosion Due to Wear)". The failure rate was lowered from 203 repairs/year to 49 repairs/year (a 76% reduction) for "all failure mechanisms". Failures due to "Mechanical Wear or Corrosion Wear" were reduced from 108 repairs/year to 18 repairs/year (an 83% reduction). This success yielded over a 100% rate of return since the tubing rotator will normally pay out after eliminating the first pulling job and requires only 15 minutes per year of extra labor. Economics suggest that 100% to 20% investment rate of returns are achievable in wells failing once every 24 months or more often (not considering downtime losses). Thus, the manual rotator is not just for "problem" wells and significantly reduces wear failures.

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PCPs Coming of Age as a Viable Artificial Lift Solution for Low API Crude Fields

Agarwal

Aggarwal

Kumar

2015

SPE Middle East Oil &Amp; Gas Show and Conference

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Majority of the Indian Oil Fields have gone well past the age of self-flow, with only a very few select wells currently producing crude utilizing the natural reservoir energy. It is a well-documented fact that the age of easy, light oil has passed and that, most of the new discoveries being made are those of either heavy or ultra-heavy crude oil types. SRPs, ESPs, Jet pumps, Gas lift are the various modes of artificial lift currently under employment. However, all these methods fail when heavy oils are encountered. In such cases, these methods of artificial lift fail to provide the requisite lift for the crude to reach the surface. However, the Progressive Cavity Pumps (PCPs) have found great utility under conditions of heavy crude production. The spiral motion of the Pump cavity from suction to discharge causes jerk-free motion of the crude. PC Pumps have distinctive advantage over the other methods, when heavy crudes along with significant sand cuts are to be produced. PC Pumps are also used on a large scale for de-watering of CBM wells. In this paper, an extensive review of the available literature was done to study PC Pumps and the various advancements achieved through the years. Artificial lift selection methods were investigated and a comprehensive procedure enlisted to select the right type of lift which best suits the field/well.

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Drilling and Production Practices To Mitigate Sucker Rod/Tubing Wear-Related Failures in Directional Wells

Cited by 11 publications

References 2 publications

Study on Sinusoidal Post-Buckling Deformation of Coiled Tubing in Horizontal Wells Based on the Separation Constant Method

Study on Sinusoidal Post-Buckling Deformation of Coiled Tubing in Horizontal Wells Based on the Separation Constant Method

Manual Tubing Rotation Reduces Rod Pumping Failures by 76%

PCPs Coming of Age as a Viable Artificial Lift Solution for Low API Crude Fields

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