A New Approach for Sand Control: High-Rate Water Pack for Unconsolidated Reservoirs

2020 ◽  
Author(s):  
Walter Nunez ◽  
Brian Valencia ◽  
Rosana Polo ◽  
William Vera ◽  
Silvia Lizcano ◽  
...  
Keyword(s):  
High Rate ◽  
New Approach ◽  
Sand Control

Sand Free Production Success Through Proven Technology Enabler from An Untapped Heterogeneous Reservoir Zone Utilizing Gravel Pack Replacement Methodology

2020 ◽  
Author(s):  
Y. Anggoro
Keyword(s):  
Oil And Gas ◽  
Erosion Resistance ◽  
Cost Effective ◽  
High Rate ◽  
Screen Design ◽  
Sand Control ◽  
Rules Of Thumb ◽  
Production Success ◽  
Control Technologies ◽  
Gravel Pack

The Belida field is an offshore field located in Block B of Indonesia’s South Natuna Sea. This field was discovered in 1989. Both oil and gas bearing reservoirs are present in the Belida field in the Miocene Arang, Udang and Intra Barat Formations. Within the middle Arang Formation, there are three gas pay zones informally referred to as Beta, Gamma and Delta. These sand zones are thin pay zones which need to be carefully planned and economically exploited. Due to the nature of the reservoir, sand production is a challenge and requires downhole sand control. A key challenge for sand control equipment in this application is erosion resistance without inhibiting productivity as high gas rates and associated high flow velocity is expected from the zones, which is known to have caused sand control failure. To help achieve a cost-effective and easily planned deployment solution to produce hydrocarbons, a rigless deployment is the preferred method to deploy downhole sand control. PSD analysis from the reservoir zone suggested from ‘Industry Rules of Thumb’ a conventional gravel pack deployment as a means of downhole sand control. However, based on review of newer globally proven sand control technologies since adoption of these ‘Industry Rules of Thumb’, a cost-effective solution could be considered and implemented utilizing Ceramic Sand Screen technology. This paper will discuss the successful application at Block B, Natuna Sea using Ceramic Sand Screens as a rigless intervention solution addressing the erosion / hot spotting challenges in these high rate production zones. The erosion resistance of the Ceramic Sand Screen design allows a deployment methodology directly adjacent to the perforated interval to resist against premature loss of sand control. The robust ceramic screen design gave the flexibility required to develop a cost-effective lower completion deployment methodology both from a challenging make up in the well due to a restrictive lubricator length to the tractor conveyancing in the well to land out at the desired set depth covering the producing zone. The paper will overview the success of multi-service and product supply co-operation adopting technology enablers to challenge ‘Industry Rules of Thumb’ replaced by rigless reasoning as a standard well intervention downhole sand control solution where Medco E&P Natuna Ltd. (Medco E&P) faces sand control challenges in their high deviation, sidetracked well stock. The paper draws final attention to the hydrocarbon performance gain resulting due to the ability for choke free production to allow drawing down the well at higher rates than initially expected from this zone.

Tubulin Proteins in Cancer Resistance: A Review

2020 ◽  
Vol 21 (3) ◽  
pp. 178-185 ◽  
Author(s):  
Mohammad Amjad Kamal ◽  
Maryam Hassan Al-Zahrani ◽  
Salman Hasan Khan ◽  
Mateen Hasan Khan ◽  
Hani Awad Al-Subhi ◽  
...  
Keyword(s):  
Cell Cycle ◽  
Cancer Cells ◽  
High Rate ◽  
Vinca Alkaloids ◽  
Cancer Resistance ◽  
New Approach ◽  
Natural Sources ◽  
Cell Cycle Genes ◽  
Cancerous Cells ◽  
Β Tubulin

Cancer cells are altered with cell cycle genes or they are mutated, leading to a high rate of proliferation compared to normal cells. Alteration in these genes leads to mitosis dysregulation and becomes the basis of tumor progression and resistance to many drugs. The drugs which act on the cell cycle fail to arrest the process, making cancer cell non-responsive to apoptosis or cell death. Vinca alkaloids and taxanes fall in this category and are referred to as antimitotic agents. Microtubule proteins play an important role in mitosis during cell division as a target site for vinca alkaloids and taxanes. These proteins are dynamic in nature and are composed of α-β-tubulin heterodimers. β-tubulin specially βΙΙΙ isotype is generally altered in expression within cancerous cells. Initially, these drugs were very effective in the treatment of cancer but failed to show their desired action after initial chemotherapy. The present review highlights some of the important targets and their mechanism of resistance offered by cancer cells with new promising drugs from natural sources that can lead to the development of a new approach to chemotherapy.

Implementation of Multistack Sand Exclusion Methodology in Extremely Unconsolidated Wells: Learnings from Marginal Daman Field, Western Offshore India

2021 ◽  
Author(s):  
Ravindra M Patil ◽  
P V Murthy ◽  
Kutbuddin Bhatia ◽  
Mayur Deshpande ◽  
Karan Pande
Keyword(s):  
Success Factors ◽  
Gas Production ◽  
High Rate ◽  
High Stakes ◽  
Carrier Fluid ◽  
Packing Factor ◽  
Sand Control ◽  
Core Study ◽  
And Performance ◽  
Good Productivity

Abstract The Daman marginal field is a prolific gas-producing clastic field with highly unconsolidated Paleo-Miocene sandstone formations and a wide variety of lithologies across multistack sand layers. As such, high-rate water packs (HRWPs) are the ideal completion method in many Mumbai fields. Because multistack reservoirs require good zonal isolation, and to prevent crossflow between reservoirs with different pressure regimes, multistack sand exclusion (MSSE) methodology was selected for primary well completions with minimum rig time and a high degree of treatment placement accuracy. From an operational standpoint, exploiting these layers using this method means more control points can be achieved across these heterogeneous layers, and the MSSE completion is ideal for multiple applications in a shorter period, helping sustain sand-circumscribed gas production from these unconsolidated layers. During the design phase, grain-size distributions and core study defined the sand range from generally clean, coarse, and sorted to poorly sorted, with high-fines content and clay rich. To address the unique challenges of deep offshore operations, formation technical difficulties, high-stakes economics, and the significant untapped potential from these Daman sands, the MSSE approach was designed and implemented in this field. Historically, for multistack wells, an HRWP is performed zone by zone whereby the process of sump packer installation, perforation run, deburr run, screen assembly installation, and pumping is repeated for each zone. In Well A, the MSSE system was applied without any repetition and all in one phase. All layers were perforated and positively isolated. Each interval was individually opened for the HRWP treatment using a low-friction low-residue carrier fluid. Using a high-packing-factor proppant at a higher rate, the well was treated sequentially from the bottom of the interval to the top. Many marginal fields in this basin have become uneconomical because of the high cost and complexity of sand control methodology. Therefore, reducing costs and time becomes vital to help ensure economic viability, as well as achieving significant operational efficiencies. Additionally, reducing near-wellbore (NWB) mechanical skin and ensuring good productivity from the reservoir are among the major solutions when implementing an MSSE completion. The methodology adopted significantly helped reduce expenditures by standardizing completion design, simplifying the core complexity, and enhancing overall reliability and operational efficiency. The optimized engineering workflow was fit for purpose, rather than the conventional “cookie-cutter” method to address sanding propensity in this field. This paper discusses the cutting-edge MSSE completion systems that focused on downhole completion and modifications for pumping operations. Additionally, the paper reviews challenges addressed during this campaign, workflow adapted, detailed strategy success factors, and positive results obtained during evaluation. This has helped reduce potential risks and improve reliability and performance, which can act as best practices and can be applied within similar fields.

The Vorbix Burner: A New Approach to Gas Turbine Combustors

1975 ◽  
Author(s):  
S. J. Markowski ◽  
R. P. Lohmann ◽  
R. S. Reilly
Keyword(s):  
Gas Turbine ◽  
Combustion Efficiency ◽  
High Rate ◽  
Rayleigh Instability ◽  
Gas Turbine Combustor ◽  
New Approach ◽  
High Power Operation ◽  
Power Operation ◽  
Definition Of ◽  
Excellent Stability

The vorbix burner (acronym for Vortex Burning and Mixing) represents a new approach to a practical gas turbine combustor design. The concept exploits the Rayleigh instability of swirling flows to enhance the mixing and combustion rates. The combination of a two-stage fuel system with a piloted combustor leads to a unique high rate technique for fuel prevaporization within the combustor proper. This paper presents the fundamental concepts in the definition of the vorbix combustor and the results of exploratory tests conducted on can (tubular) and annular vorbix combustors. The results indicate that this type of combustor has unique performance characteristics that include excellent stability and high combustion efficiency over wide excursions in operating fuel air ratios in addition to substantially reduced emission levels during high power operation.

A Method of Profiling Microbial Communities Based on a Most-Probable-Number Assay That Uses BIOLOG Plates and Multiple Sole Carbon Sources

1999 ◽  
Vol 65 (10) ◽  
pp. 4419-4424 ◽  
Author(s):  
Masashi Gamo ◽  
Tadashi Shoji
Keyword(s):  
Bacterial Communities ◽  
Carbon Sources ◽  
High Rate ◽  
Most Probable Number ◽  
Probable Number ◽  
New Approach ◽  
Mixing Ratios ◽  
Color Development ◽  
Assay Procedure ◽  
Pure Cultures

ABSTRACT A new approach to the community-level BIOLOG assay was proposed. This assay, which we call the BIOLOG-MPN assay, is a most-probable-number (MPN) assay that uses BIOLOG plates and multiple sole carbon sources, and the profiles obtained by this assay consist of MPNs estimated for the substrates in the BIOLOG plates. In order to demonstrate the performance of the BIOLOG-MPN assay, it was applied to pure cultures, model bacterial communities that contain two strains in different ratios, and microbial community samples. MPN estimation using BIOLOG plates worked well for the substrates on which utilizers can grow at a sufficiently high rate for color development under the conditions of the assay procedure. Furthermore, the results obtained using model communities showed that the MPNs obtained reflected the mixing ratios of pure cultures in the model communities. The profiles obtained using model communities and community samples were differentiated properly by statistical analyses. The results suggest that the BIOLOG-MPN assay is a promising procedure for obtaining a quantitative picture of the community structure.

Achieving High-Rate Completions With Innovative Through-Tubing Sand Control

2002 ◽  
Vol 17 (01) ◽  
pp. 49-53
Author(s):  
Thomas A. Bell ◽  
Dan W. Morrison ◽  
William E. Martch
Keyword(s):  
High Rate ◽  
Sand Control

Big Bore Completion and Sand Control for High Rate Gas Wells

2006 ◽  
Author(s):  
Alain Bourgeois ◽  
Pierre Puyo ◽  
Sebastien Bourgoin
Keyword(s):  
High Rate ◽  
Gas Wells ◽  
Sand Control

Big Bore Completion and Sand Control for High Rate Gas Wells (Russian)

2006 ◽  
Author(s):  
Alain Bourgeois ◽  
Sebastien Bourgoin ◽  
Pierre Puyo
Keyword(s):  
High Rate ◽  
Gas Wells ◽  
Sand Control

High-Rate Formation of Nano-Scale Alumina Particles

1991 ◽  
Vol 249 ◽  
Author(s):  
A. Kilian ◽  
L. Reinhart ◽  
A. Davis ◽  
T.F. Morse ◽  
D.C. Paine
Keyword(s):  
Size Range ◽  
High Rate ◽  
Practical Application ◽  
New Approach ◽  
Monodispersed Particles ◽  
Nano Scale ◽  
Alumina Particles ◽  
Large Production ◽  
Oxide Particles ◽  
The Ideal

ABSTRACTIn this paper we report a new approach to the problem of high rate formation of nanophase powders. In our experiments we were able to make aluminum oxide particles in the size range from 5 to 140 nm (peaking sharply at 35 nm) at a rate of 3 g/min. The starting material was a mixture of aluminum-tri-sec-butoxide and sec-butanol. An aerosol was made from this solution and subsequently burned in a special torch, described below. The resulting particles were spherical and no necked regions were observable between them. In a practical application, our technique allows a large production rate while still approaching the ideal of nano-scale monodispersed particles. The work was extended to the formation of zirconium oxide particles with quite similar results in the size distribution.

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