Guidelines for Selection of Fluid Loss Control Methods Before and After Sand Control Treatments to Maximize Well Productivity and Cost-Effectiveness

1998 ◽  
Author(s):  
M. Parlar ◽  
S.A. Ali ◽  
C. Price-Smith ◽  
P. Palthe ◽  
F.F. Chang ◽  
...  
Keyword(s):  
Cost Effectiveness ◽  
Fluid Loss ◽  
Control Methods ◽  
Well Productivity ◽  
Sand Control ◽  
Before And After ◽  
Loss Control ◽  
Selection Of

Solids-Free Loss-Control System Enables Efficient Coiled Tubing Workover Operations: Case Studies in Ukraine

2021 ◽  
Author(s):  
Mykhailo Pytko ◽  
Pavlo Kuchkovskyi ◽  
Ibrahim Abdellaitif ◽  
Ernesto Franco Delgado ◽  
Andriy Vyslobitsky ◽  
...  
Keyword(s):  
Control System ◽  
Gas Production ◽  
Free Fluid ◽  
Fluid Loss ◽  
Successful Implementation ◽  
Reservoir Pressure ◽  
Well Completion ◽  
Coiled Tubing ◽  
Sand Control ◽  
Loss Control

Abstract This paper describes three coiled tubing (CT) applications in depleted reservoir wells, where full circulation and precise fluid placement were achievable only by using a novel solids-free loss-control system, such as abrasive perforating applications. It also describes the preparation work, such as laboratory results and mixing procedure performed to ensure successful implementation. The analysis of Ukrainian reservoir conditions by local and global engineering teams showed that in a highly depleted well, abrasive jetting through CT was the best option to efficiently perforate the wellbore. However, this approach could lead to later impairment of the gas production if the abrasive material (sand) could not be entirely recovered. Such a risk was even higher as wells were depleted and significant losses to the formation occurred. The use of solids-free fluid-loss material that was easy to mix, pump, and remove after the operation, was, therefore, critical to the success of that approach. In Ukraine, most of the brownfields have a reservoir pressure that varies between 50% and 20% of the original reservoir pressure. This is a challenge for CT operations in general and especially for abrasive jetting, which requires full circulation to remove solids. It also complicates intervention when precise fluid placement control is required, such as spotting cement to avoid its being lost into the formation. The perforation solids-free loss-control system is a highly crosslinked Hydroxy-Ethyl Cellulose (HEC) system designed for use after perforating when high-loss situations require a low-viscosity, nondamaging, bridging agent as is normally required in sand control applications. It is supplied as gel particles that are readily dispersed in most completion brines. The particles form a low-permeability filter cake that is pliable, conforms to the formation surface, and limits fluid loss. The system produces low friction pressures, which enable its placement using CT. Introduction of that system in Ukraine allowed the full circulation of sand or cuttings to surface without inducing significant damage to the formation for first time; it was also used for balanced cement plug placements. This project was the first application of the solids-free loss-control system in combination with CT operations. It previously was used only for loss control material during the well completion phase in sand formations with the use of drilling rigs.

The Impact of Zika Virus Education on Selection of Birth Control Methods Among Cuban Refugees Resettling in Louisville, Kentucky in 2016

2018 ◽  
Vol 11 (1) ◽  
pp. 88-92
Author(s):  
Dawn Balcom ◽  
Ruth Carrico ◽  
Linda Goss ◽  
Karen Mutsch ◽  
Rahel Bosson
Keyword(s):  
Condom Use ◽  
Birth Control ◽  
Zika Virus ◽  
Control Method ◽  
The United States ◽  
Control Methods ◽  
Practice Nurses ◽  
Before And After ◽  
The Impact ◽  
Selection Of

Background:Cubans represented almost 40% of all refugees resettling in KY during 2015 and 2016. Their route to the United States included extended time in areas recognized as Zika endemic, making them vulnerable to Zika virus (ZV) exposure and infection. Early availability of birth control is one strategy stressed by the Centers for Disease Control and Prevention (CDC) to delay an unintended pregnancy after ZV exposure and prevent the catastrophic impact on a developing fetus.Objectives:The objectives were to determine: (a) awareness of ZV among Cuban refugees, and (b) the impact of education regarding ZV on their initial birth control decisions.Methods:During May–November 2016, 167 Cuban men and women aged 19–50 were seen by advanced practice nurses (APNs) in the University of Louisville Global Health Center (UL GHC). During the visit, awareness regarding ZV, current planned birth control method(s), and education about ZV was imparted using information developed by the CDC and provided by clinic personnel competent in delivery of culturally, socially, and linguistically appropriate messaging. Anticipated methods of birth control were then reassessed.Results:Condom use was the most prevalent contraceptive method used before and after ZV education (29% and 58% respectively, p < .001). The influence of education regarding ZV and ZV infection on selection of birth control methods (condom use) was significant (p < .001).Conclusions:Findings indicate education provided by APNs regarding ZV influence birth control selection among Cuban refugees.

A Procedure for Quantifying the Benefit and Cost Effectiveness of Noise Control Methods

1994 ◽  
Vol 1 (2) ◽  
pp. 151-157 ◽  
Author(s):  
A.T. Moorhouse
Keyword(s):  
Cost Effectiveness ◽  
Noise Exposure ◽  
Noise Control ◽  
Control Measure ◽  
Control Methods ◽  
Individual Worker ◽  
Before And After ◽  
The Cost ◽  
Single Figure

The benefit to an individual worker of a noise control measure is assessed by comparing their personal daily noise exposure before and after modifications. However, in complicated situations, such as factories, several workers' exposure may be reduced by the same noise control measure to differing degrees, and the overall improvement cannot be quantified so easily. In the paper a procedure is proposed in which the benefit of a noise control measure to all workers is given as a single figure rating. Proper before and after comparison of the overall improvement is then possible. This rating can also be used to quantify the cost effectiveness of various options. An example calculation is given.

scholarly journals A microfluidic device enabling drug resistance analysis of leukemia cells via coupled dielectrophoretic detection and impedimetric counting

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yağmur Demircan Yalçın ◽  
Taylan Berkin Töral ◽  
Sertan Sukas ◽  
Ender Yıldırım ◽  
Özge Zorlu ◽  
...  
Keyword(s):  
Drug Resistance ◽  
K562 Cells ◽  
Leukemia Cells ◽  
Drug Resistant ◽  
Wild Type ◽  
Gene Expressions ◽  
Before And After ◽  
The Difference ◽  
Selection Of ◽  
Resistant Cells

AbstractWe report the development of a lab-on-a-chip system, that facilitates coupled dielectrophoretic detection (DEP-D) and impedimetric counting (IM-C), for investigating drug resistance in K562 and CCRF-CEM leukemia cells without (immuno) labeling. Two IM-C units were placed upstream and downstream of the DEP-D unit for enumeration, respectively, before and after the cells were treated in DEP-D unit, where the difference in cell count gave the total number of trapped cells based on their DEP characteristics. Conductivity of the running buffer was matched the conductivity of cytoplasm of wild type K562 and CCRF-CEM cells. Results showed that DEP responses of drug resistant and wild type K562 cells were statistically discriminative (at p = 0.05 level) at 200 mS/m buffer conductivity and at 8.6 MHz working frequency of DEP-D unit. For CCRF-CEM cells, conductivity and frequency values were 160 mS/m and 6.2 MHz, respectively. Our approach enabled discrimination of resistant cells in a group by setting up a threshold provided by the conductivity of running buffer. Subsequent selection of drug resistant cells can be applied to investigate variations in gene expressions and occurrence of mutations related to drug resistance.

Time Delayed and Low-Impairment Fluid-loss Control Using a Succinoglycan Biopolymer with an Internal Acid Breaker

SPE Journal ◽  
1997 ◽  
Vol 2 (04) ◽  
pp. 417-426 ◽  
Author(s):  
Marcel N. Bouts ◽  
A. Trompert Ruud ◽  
Alan J. Samuel
Keyword(s):  
Fluid Loss ◽  
Loss Control

scholarly journals Experimental analysis on rheological and fluid loss control of water-based mud using new additives

2018 ◽  
Vol 9 (3) ◽  
pp. 23-31 ◽  
Author(s):  
Misbah Biltayib Biltayib ◽  
Rashidi Masoud ◽  
Balhasan Saad ◽  
Alothman Reem ◽  
S. Kabuli Mufazzal
Keyword(s):  
Experimental Analysis ◽  
Fluid Loss ◽  
Water Based ◽  
Loss Control

Manufacturing of LSAW Pipes Using Hot Rolled Sheets for Sour-Service Application

2021 ◽  
Author(s):  
Rajesh Kumar Goyal ◽  
Mahesh Gajjar ◽  
Ashok Joshi ◽  
Anupkumar Tamhane
Keyword(s):  
Steel Mill ◽  
Corrosion Resistant ◽  
Behavioural Changes ◽  
H2s Corrosion ◽  
Before And After ◽  
Service Application ◽  
Hot Rolled ◽  
Sour Service ◽  
Geographical Locations ◽  
Selection Of

Abstract The exploration and transportation of fluids from corrosive fields or reserves demand corrosion-resistant pipelines. The pipelines for sour-service application demand higher resistance to H2S corrosion because of higher sulphur content observed in the geographical locations. The pipelines laid in the corrosive and marshy lands demand high wall thickness to allow for wall thinning due to corrosion. The linepipes manufactured using TMCP plates are widely accepted for sour-service applications. The use of cut-to-length sheets from hot rolled coils for the manufacturing of LSAW pipes is economical but having limited acceptance by the pipeline operators. Welspun took an initiative to develop the linepipes for an onshore sour-service application using API 5L X60MS grade cut-to-length sheets from TMCP hot rolled coils procured from an approved steel mill. The LSAW pipes of 24” OD × 14.27 mm WT were manufactured by the JCO-E press at Welspun Pipes Mill in Anjar-Gujarat-India. The experience of 24”OD × 14.30 mm WT, API 5L X60MO grade pipes manufacturing using TMCP plates procured from another approved steel mill, was used to decide factors such as alloy design, cleanliness, strength, DWTT, hardness, HIC, SSCC, CVN for the selection of cut-to-length sheets. This paper deals with sheet-to-pipe behavioural changes in properties before and after cold mechanical expansion. Wherever possible, the comparison was also made with plate-pipe behavioural changes in properties.

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