Traditional sand control sizing has typically been based on "standard", wide-sieve gravel distributions (i.e. 20/40, 16/30, etc). Historic sand retention testing has therefore been limited to these standard gravel (i.e. proppant) sizes. With the emergence of new proppant technologies, extensive testing has recently been performed to evaluate the impact of mono-sieved gravel on sand retention performance.
Sand retention testing was performed using a number of industry test protocols [
Comparison of the mass of produced sand through various combinations of formation/gravel are useful in identifying the preferred gravel to manage solids production. This study will show that sand control performance of mono-sieved gravel is comparable to that of standard-sieve distribution gravel. This is illustrated by comparing the mass of produced sand and measurement of permeability in the various formation/gravel combinations. The paper will demonstrate that numerous "rules of thumb" employed for gravel sizing (including use of "Saucier's ratio") during the gravel- and frac-pack design process can be applied to any sieve distribution gravel, whether standard- or mono-sieved. In addition to the test results, this paper will reference multiple GOM applications with frac-pack completions in which sand control is performing as designed using mono-sieved gravel.
This paper is critical for all completions engineers who are designing gravel or frac-pack completions. Sand retention testing on mono-sieved gravel is novel, and these results complement existing testing. The results of this testing have already been applied by several exploration and production companies, and this paper will allow others to benefit from the work.
Deepwater wells are the most complex and challenging operations for today's petroleum workforce. These challenges push the limits of technology requiring high level personnel competencies and stringent safety requirements. Robust and consistent procedures aid in implementing reliable operational execution. When complex operations include multiple drill ships and TLPs, and when these activities are mirrored by separate support teams of engineers and operations there are opportunities for varying procedures, content, format, and technology applications. This misalignment evolves over time, based on individual preferences, lessons learned, and varying procedures from different service providers.
This paper discusses the efforts and outcomes of bringing standardization to Deepwater operations in the Gulf of Mexico (GOM) and to Shell's broader global Deepwater organization (DWO). Standardization efforts include full End-to-End well delivery from engineering design documents, recommended/best practices, operational procedures, workflow processes, after-action-reviews, knowledge sharing, and refreshing standards as required.
Ensuring a learning loop process is in place and actively used is a key element in keeping standard documents evergreen and has the overarching goal of preventing repeat failures and NPT events. An additional benefit is the ability to deliver documents with structured content, aligned format and standard language to both the operations teams and service providers.
The formation of a core team and central department has driven global standards, active sharing of learnings across all Deepwater business units, opened communication lines with areas previously siloed due to location, reduced cycle time for the engineering teams in re-creating procedures and demonstrated sustainable reductions in operational costs.
This session focuses on the latest developments in drilling applications used during exploration and development of wells. These applications are design specifically to improve well costs and schedules. The overall spectrum of well planning, engineering and design, execution will be covered; along with highlights on technical solutions of key challenges in our current drilling environment. The industry, utilises tool and equipment inspection (QA & QC) as an approach to achieve drilling assurance and reliability. Several examples of initiatives to reduce Non-Productive Time (NPT) through the application of geomechanical studies and the improvement of drilling practices to minimise operational problems related to well bore stability will be covered.
Murphy Oil to Buy Deepwater US Gulf Assets for up to $1.625 Billion The El Dorado, Arkansas-based Murphy has quickly found a home for some of the cash it will receive from the sale of its Malaysia business. The company has been rapidly expanding its US gulf footprint while simplifying its portfolio and targeting more oil. The pact, which builds on the firms’ current partnership on the Buckskin project, covers four Keathley Canyon blocks including the Leon and Moccasin discoveries. BP announced four discoveries in the Gulf of Mexico near existing platforms. It use advanced seismic imaging to identify resources in deepwater locations that can be developed cost effectively using platforms nearby.
Mexico Awards Its First Deepwater Blocks; What Comes Next? Mexico’s long awaited deepwater auction saw 8 out of 10 blocks awarded but there remains plenty of work to be done before activity ramps up, including finalizing regulatory rules, upgrading ports, and optimizing the bid rules for future auctions. Mexico’s second oil and gas lease auction has been deemed a success after three out of five shallow-water blocks were awarded in September. The awarded areas contain an estimated 236 million bbl of oil and 190 Bcf of gas. In June, Mexico’s national oil company Pemex announced its largest discoveries of oil and gas in 5 years.
Deepwater operators continually face technical and environmental challenges to drilling and completing wells safely and efficiently. Radio-frequency identification (RFID) offers the user flexibility in controlling downhole operations without intervention. RFID uses close-proximity sensing to communicate by simply passing a coded tag through an antenna-equipped downhole tool to actuate it.
Petrobras says it can produce oil for a lower break-even price than onshore shale plays, including the Permian Basin. Brazil’s offshore sector has cut the cost of deepwater production but comparisons based on break-even prices are slippery. It's Hard To Make Money in Deepwater, Even With Billions of Barrels To Produce Low oil prices have made the goal of this Petrobras project and its four partners to lower the break-even price of operating to USD 35/bbl.
Make or Breakeven: Is Unconventional Oil Production Getting More Efficient? If the benchmark oil price is $10/bbl higher than the breakeven price for production that means companies are making good money, right? Maybe, but it’s hard to know what goes into a breakeven price. Petrobras says it can produce oil for a lower break-even price than onshore shale plays, including the Permian Basin. Brazil’s offshore sector has cut the cost of deepwater production but comparisons based on break-even prices are slippery.