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Light annular mud cap drilling, downhole isolation valve help to drill fractured gas reservoir in Indonesia

The lower completion consists of a float shoe with a flat-bladed nose, alternating joints of pre-perforated, frangible disk plug, and a 7-in. x 9 5/8-in. liner top packer.

An operator in Indonesia sought to drill on a gas field that lies on the western flank of the Central Palembang Sub-basin, in the South Sumatra Basin. South Sumatra is a Tertiary back-arc basin, approximately 500 km by 300 km. The pre-Tertiary rocks provide the lower reservoir portion of the gas field, while the upper portion of the reservoir is within porous Tertiary sediments of the Lower Talang Akar and Batu Raja formations. The Tertiary and pre-Tertiary reservoir rocks are enhanced by natural fractures...

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Coiled-tubing cementing operation on HPHT well uses MPD technique to lower costs, ensure integrity

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The number of exploration wells drilled in high-pressure, high-temperature (HPHT) environments keeps growing, spurred by the ongoing search for new oil and gas reserves. Per the Norwegian Standards Organization (NORSOK), an HPHT well has a wellhead shut-in pressure exceeding 69 MPa (10,000 psi) and an ambient temperature greater than 150°C (302°F)...

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Influx management envelope deployed during planning phase for 3 sections of deepwater MPD well

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The MPD Operations Matrix was introduced in 2007 to serve as an operational guide for drilling MPD sections. The intent of the matrix is to balance operational, well and equipment limitations with “acceptable” influx volumes. The operations matrix has become the cornerstone of MPD projects worldwide and is a mandatory component of planned MPD wells in the US Gulf of Mexico...

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Big data brings insights but also cybersecurity exposure

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A critical theme that ran throughout our Critical Issues in Drilling and Completions Q&A’s in the last issue of DC was around data and how that’s taking center stage in the digital oilfield. That theme continues in this issue, where you can read about the latest evolution in intelligent coiled-tubing technologies (Page 42). Even in this hard-hit segment of the market – down by a whopping 41% from 2014 to 2015, then by an additional 39% in the year that followed – companies are looking toward data as the next step for advancing efficiency and cost effectiveness.

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Evolution of intelligent coiled-tubing technologies drives need for better sensors, data interpretation tools to aid real-time decision-making

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Coiled-tubing interventions, like everything else in the upstream sector, have taken a hit since oil prices tumbled in 2014. In fact, the coiled-tubing industry declined by 41% from 2014 to 2015 and by an additional 39% from 2015 to year-end 2016, according to data from Spears and Associates...

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HSE&T Corner: Involving employees in JSA development, making corrective actions visible increase buy-in to incident prevention programs

Bill Murphy (left) and Phil Molé (right) of Velocity EHS emphasized the importance of employee buy-in to incident prevention programs during a presentation at the 2017 IADC HSE&T Conference in Houston on 7 February. Ensuring that employees are made aware when their feedback or reporting leads to a corrective action is one way to secure their buy-in. Employees can also be included in the development of the job safety analysis.

While the first and most important objective of an incident prevention program is to ensure employees get home safely, a strong program does more than protect people from harm. “They have the benefits of increased productivity, reduced costs and lower employee turnover,” Phil Molé, EHS Expert for Velocity EHS, said on 7 February at the 2017 IADC HSE&T Conference in Houston. “You improve employee morale and job satisfaction overall because you create the kind of environment employees like to be in.”

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Wirelines

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On 3 February, the US House of Representatives voted in favor of H.J.Res. 38, which is a Congressional Review Act resolution to nullify “Waste Prevention, Production Subject to Royalties and Resource Conservation,” a rule from the US Bureau of Land Management (BLM). The rule regulated methane emissions via venting and flaring limitations on public and Indian lands.

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UT Austin-based drilling automation consortium builds data visualization templates, develops data-driven top drive monitoring techniques

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Although automated drilling has been a popular discussion topic among drilling engineers for much of the past decade, practical solutions have been slow to emerge. Since its launch in May 2015, the University of Texas-based Rig Automation and Performance Improvement in Drilling (RAPID) consortium has worked to speed the pace of automated drilling innovations by delivering pragmatic and immediately applicable solutions to some of the drilling industry’s most pressing issues...

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