Extended Reach Drilling in the GOM - Ram Powell Case Study

Algu, Dave; Landgrave, Steve; Esquinance, Bruce; Volokitin, Yakov; Derise, Bill

doi:10.2118/92371-ms

Cited by 7 publications

(3 citation statements)

References 4 publications

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“…Taking frequent pickup-and slackoff-weight readings during pipe and wireline trips is highly recommended, as this example has demonstrated. Algu et al (2005) documented the setdown and pickup forces of a Gulf of Mexico Ram Powell extended-reach completion, using a pulsed tool to measure the actual downhole forces. The real-time data were compared to model predictions and indicated that a stiffer workstring would be desirable to minimize buckling and maximize the transfer of weight downhole.…”

Section: Worktring Design and Executionmentioning

confidence: 99%

“…Sufficient setdown weight was applied during these completions to install packer plugs, set TCP packers, pump frac packs, and pump remedial cement jobs. Algu et al (2005) were concerned about there being sufficient downhole setdown force to perform a fracpack treatment. The Petronius program maintained the initial surface setdown weight throughout the treatment to ensure that all effects (i.e., piston, ballooning, thermal, and buckling) were properly compensated for.…”

Section: Worktring Design and Executionmentioning

confidence: 99%

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Deepwater Extended-Reach Sand-Control Completions and Interventions

Pourciau

2007

SPE Drilling &Amp; Completion

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Extended-reach, naturally perforated, water-injection, frac-pack producing completions and frac-pack producing selective completion interventions were successfully implemented in the deepwater Gulf of Mexico Petronius field, setting both Gulf of Mexico and world records. Success was achieved through careful planning of procedures and specification of equipment. This paper describes the planning for these challenging extended-reach completion and intervention operations, along with the lessons learned while implementing these case-history jobs. IntroductionChevron and Marathon each have a 50% working interest in the Petronius project, which is operated by Chevron. The field is located in the Gulf of Mexico, 150 miles south of Mobile, Alabama. The project was sanctioned in August of 1996 after both compliant-tower and subsea-development options were evaluated. The compliant-tower alternative was selected because of its greater well-intervention capability, less-complex seawater-injectionsystem design, lower investment requirements, and future hub potential. The 2,001-ft-tall Petronius compliant tower is set in 1,754 ft of water and is the world's tallest free-standing structure.The Petronius project originally targeted two main reservoirs which were delineated by seven preplatform-well penetrations. Once these two original pay sands were developed, the operators set their sights on developing suspected pay zones much farther from the platform in deeper water. The development of these distant zones required mechanical success in implementing difficult world-record extended-reach processes and, of course, success in finding economic quantities of pay.For the past 3 years, a successful program of just such worldrecord extended-reach development has been ongoing. The program has seven wells to date, with horizontal displacements ranging from 14,000 to more than 25,000 ft. These horizontaldisplacement values far exceed the ≈11,000-ft true vertical depth (TVD) of these wells. Fig. 1 summarizes the directional data for the Petronius extended-reach program in chronological order of well development, and Fig. 2 illustrates the complexity of the directional profile of the most challenging of these wells.This extended-reach program is quite an accomplishment considering the unconsolidated deepwater environment. To date, the program includes two water-injection wells and five frac-pack producing wells. Three of the five producing wells include stackedfrac-pack completions. Future well plans include an additional extended-reach frac-pack producing completion and a sidetrack of an extended-reach water-injection well.

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Section: Worktring Design and Executionmentioning

confidence: 99%

Section: Worktring Design and Executionmentioning

confidence: 99%

Deepwater Extended-Reach Sand-Control Completions and Interventions

Pourciau

2007

SPE Drilling &Amp; Completion

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“…Naegel et al [5] reported an ERD well with a 20,341.2 ft horizontal departure at 5,577 ft true vertical depth (TVD). ERD continued in the past two decades with new record updated every a few years [6][7][8][9][10][11]. Armstrong and Evans [12] reported planning and execution of an offshore ERD well of a total measured depth (MD) of 37,165 ft with TVD of 6,938 ft, and horizontal displacement (HD) of 33,682 ft. Tskhadaya et al [13] presented a design of ERD for an Arctic well depth of 49,212.6 ft and horizontal borehole depth of 4,921.3 ft. Special technical issues in ERD include rig requirement, borehole stability, cuttings transport, data acquisition, and drill string design.…”

Section: Introductionmentioning

confidence: 99%

An Analytical Model for Axial Force Transfer and the Maximum Compression Point of Work Strings in Extend Reach Drilling

Shaibu

2020

IMST

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Complex work string dynamics are often observed when one is investigating the limit of Extended Reach Drilling (ERD), yet the underlying physical causes of anomalous problems are often not fully understood and is thus a topic of ongoing research interest. Theoretical models capturing tubular dynamics have been previously proposed to analyze force transfer in work strings, yet there is significant confusion regarding these models because their published versions are not entirely consistent and, in many cases, do not meet engineering requirement. Further confusion is introduced through variations in pin-pointing locations where axial compression in the work strings should be checked for mechanical integrity. A simple and yet rigorous mathematical model is essential for adequate prediction of axial compression profiles in work strings for ERD. This article presents a simplified tubular mechanics model for describing axial force transfer under ERD conditions. We discuss the model in finding the point of peak compression in casing strings. This point is predicted to be in the arc section near the heel of a horizontal wellbore, under borehole drilling, and casing running conditions. The exact location of the peak axial compression changes with pipe-wall friction coefficient. For the friction coefficient in the range of 0.15 to 0.35, this point occurs in the range of inclination angle between 70.7 o and 81.5 o , averaging 76.1 o . The model can also be used for other purposes, including prediction of depth limit, bottom hole assembly (BHA) design, and locking up analysis of coiled tubing (CT) strings.

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Bridging the Gap: Challenges in Deploying Leading Edge Geomechanics Technology to Reducing Well Construction Costs

Mody

2006

All Days

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Background Over the past two decades Geomechanics has made substantial contributions to the petroleum industry in the following areas:○reducing well construction costs1,○maximizing production2, and○increasing the life of the well. Currently the industry is venturing into more complex extended reach wells3, deeper water, higher pressure higher temperature environments, sub-salt settings4, lower pore pressure/fracture gradient margins, depleted zones5, fractured carbonates2 and fractured reservoirs6, environmentally sensitive areas, and many other difficult to develop situations, as illustrated in Figure 1. Geomechanics will play a significant role in addressing these added challenges. The high price of oil is here for a long time. Our technical responsibility is to make sure that the unit development cost (UDC) to produce this oil is contained and subsequently lowered with aggressive application of relevant technology and a knowledgable workforce adept at applying this technology. Being prepared to deal with the following issues will be integral to success:○borehole (in)stability7–12,○lost circulation13,14,○stuck pipe15,○sand production16,17,○casing collapse18,19,○well failures20,○formation damage21,○sub-salt related issues2. Each of these problems can strike at any time if we are not vigilant and pro active in avoiding them. Prevention at the outset is more cost-effective than fixing these issues later. I propose we have to bridge the gap between people and technology to be effective in this age of oil industry geomechanics. See Figure 2. Controlling Costs Geomechanics-related issues cost the industry billions of dollars.22 We cannot afford, as an industry, to lose billions of dollars on Geomechanics-related non-productive time (NPT) and associated loss in revenues.32 Over the past decade, for the drilling industry on an average twenty two percent of the drilling budget can be attributed to wellbore related NPT. Fifty percent of this NPT is associated with geomechanics related (i.e. wellbore stability, Lost circulation, stuck pipe, etc.) issues.1, 8, 11, 22, 32 In spite of advances in technology, this NPT percentage associated with borehole related problems has not drastically changed over the past decade. NPT percentage of the total drilling budget is much too high and must be lowered to a more acceptable level. Also further scrutiny of the NPT data suggests a trend, that approximately 90% of costs can be attributed to a small percentage of wells that are highly complex. When these wells have problems, the cost escalates. See Figure 3. Hence, it is critical to manage the available geomechanics resources in the most optimal manner. It is important to identify the high mechanical-risk index wells and get the right geomechanics resources committed - both personnel and data collection - early in the planning stages of the well construction and utilize these resources throughout the well delivery cycle.

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Extended Reach Drilling in the GOM - Ram Powell Case Study

Cited by 7 publications

References 4 publications

Deepwater Extended-Reach Sand-Control Completions and Interventions

Deepwater Extended-Reach Sand-Control Completions and Interventions

An Analytical Model for Axial Force Transfer and the Maximum Compression Point of Work Strings in Extend Reach Drilling

Bridging the Gap: Challenges in Deploying Leading Edge Geomechanics Technology to Reducing Well Construction Costs

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