The Use Of Fluid-Loss Additives In Hydraulic Fracturing Of Oil And Gas Wells

1961 ◽  
Author(s):  
Jerry D. Hawsey ◽  
Claude L. Jacocks
Keyword(s):  
Hydraulic Fracturing ◽  
Oil And Gas ◽  
Fluid Loss ◽  
Gas Wells ◽  
Oil And Gas Wells

Fracturing Proppant Evaluation and Economic Optimization in Daqing Oilfield

2019 ◽  
Vol 394 ◽  
pp. 63-67
Author(s):  
Jiao Yang
Keyword(s):  
Hydraulic Fracturing ◽  
Oil And Gas ◽  
Economic Benefits ◽  
Selection Method ◽  
Economic Optimization ◽  
Gas Wells ◽  
Important Material ◽  
Important Impact ◽  
Oil And Gas Wells ◽  
The Cost

Fracturing proppant is an important material for hydraulic fracturing, and its performancehas an important impact on the fracturing effect and the fracturing life of oil and gas wells. On thepremise of satisfying the reservoir reconstruction requirement, optimizing the proppant with the besteconomic benefit can reduce the cost of the fracturing operation. The flow conductivity and brokenrate of common proppants are tested to obtain the performance boundaries. Based on the proppantevaluation, according to the selection method, the optimal proppant type for different formationpressures can be selected to maximize economic benefits.

Spatial Risk Analysis of Hydraulic Fracturing near Abandoned and Converted Oil and Gas Wells

Ground Water ◽  
2016 ◽  
Vol 55 (2) ◽  
pp. 268-280 ◽  
Author(s):  
Joshua W. Brownlow ◽  
Joe C. Yelderman ◽  
Scott C. James
Keyword(s):  
Risk Analysis ◽  
Hydraulic Fracturing ◽  
Oil And Gas ◽  
Gas Wells ◽  
Spatial Risk ◽  
Oil And Gas Wells ◽  
Spatial Risk Analysis

A review of fracturing fluid systems used for hydraulic fracturing of oil and gas wells

2014 ◽  
Vol 131 (16) ◽  
pp. n/a-n/a ◽  
Author(s):  
Reza Barati ◽  
Jenn-Tai Liang
Keyword(s):  
Hydraulic Fracturing ◽  
Oil And Gas ◽  
Gas Wells ◽  
Fracturing Fluid ◽  
Fluid Systems ◽  
Oil And Gas Wells

scholarly journals IMPROVEMENT OF THE TECHNIQUE AND TECHNOLOGYOF BEDS ISOLATION USING THE PROFILE EXPANDABLE CASING

2016 ◽  
pp. 34-37
Author(s):  
G. S. Abdrakhmanov ◽  
A. A. Zalyatdinov
Keyword(s):  
Oil And Gas ◽  
Fluid Loss ◽  
Drilling Mud ◽  
Gas Wells ◽  
Lost Circulation ◽  
Threaded Connections ◽  
Complex Process ◽  
Oil And Gas Wells ◽  
High Fluid ◽  
Mud Loss

Drilling of oil and gas wells is a time consuming, very complex process in which there occur all sorts of complications. The most common one is drilling mud loss. During drilling of wells the control of this fluid loss problem takes about 12 % of total time. In this case, up to 60 % of materials and time is spent on isolation of fractured-cavernous beds with high fluid loss intensity which make up only 10 % of the total number of isolated zones. The use of liners with welded and threaded connections of shaped tubes enabled to completely solve the problem of lost circulation zones isolation regardless of their thickness, the borehole caving and the fluid loss intensity.

scholarly journals Hydraulic fracturing near domestic groundwater wells

2017 ◽  
Vol 114 (50) ◽  
pp. 13138-13143 ◽  
Author(s):  
Scott Jasechko ◽  
Debra Perrone
Keyword(s):  
Hydraulic Fracturing ◽  
Oil And Gas ◽  
Water Quality Monitoring ◽  
Water Safety ◽  
Gas Wells ◽  
Drinking Water Safety ◽  
Oil And Gas Wells ◽  
Unconventional Oil And Gas ◽  
Considerable Discussion ◽  
Groundwater Wells

Hydraulic fracturing operations are generating considerable discussion about their potential to contaminate aquifers tapped by domestic groundwater wells. Groundwater wells located closer to hydraulically fractured wells are more likely to be exposed to contaminants derived from on-site spills and well-bore failures, should they occur. Nevertheless, the proximity of hydraulic fracturing operations to domestic groundwater wells is unknown. Here, we analyze the distance between domestic groundwater wells (public and self-supply) constructed between 2000 and 2014 and hydraulically fractured wells stimulated in 2014 in 14 states. We show that 37% of all recorded hydraulically fractured wells stimulated during 2014 exist within 2 km of at least one recently constructed (2000–2014) domestic groundwater well. Furthermore, we identify 11 counties where most (>50%) recorded domestic groundwater wells exist within 2 km of one or more hydraulically fractured wells stimulated during 2014. Our findings suggest that understanding how frequently hydraulic fracturing operations impact groundwater quality is of widespread importance to drinking water safety in many areas where hydraulic fracturing is common. We also identify 236 counties where most recorded domestic groundwater wells exist within 2 km of one or more recorded oil and gas wells producing during 2014. Our analysis identifies hotspots where both conventional and unconventional oil and gas wells frequently exist near recorded domestic groundwater wells that may be targeted for further water-quality monitoring.

scholarly journals Groundwater methane in relation to oil and gas development and shallow coal seams in the Denver-Julesburg Basin of Colorado

2016 ◽  
Vol 113 (30) ◽  
pp. 8391-8396 ◽  
Author(s):  
Owen A. Sherwood ◽  
Jessica D. Rogers ◽  
Greg Lackey ◽  
Troy L. Burke ◽  
Stephen G. Osborn ◽  
...  
Keyword(s):  
Hydraulic Fracturing ◽  
Oil And Gas ◽  
High Volume ◽  
Geochemical Data ◽  
Gas Migration ◽  
Gas Wells ◽  
Coal Seams ◽  
Oil And Gas Development ◽  
Water Wells ◽  
Oil And Gas Wells

Unconventional oil and gas development has generated intense public concerns about potential impacts to groundwater quality. Specific pathways of contamination have been identified; however, overall rates of contamination remain ambiguous. We used an archive of geochemical data collected from 1988 to 2014 to determine the sources and occurrence of groundwater methane in the Denver-Julesburg Basin of northeastern Colorado. This 60,000-km2 region has a 60-y-long history of hydraulic fracturing, with horizontal drilling and high-volume hydraulic fracturing beginning in 2010. Of 924 sampled water wells in the basin, dissolved methane was detected in 593 wells at depths of 20–190 m. Based on carbon and hydrogen stable isotopes and gas molecular ratios, most of this methane was microbially generated, likely within shallow coal seams. A total of 42 water wells contained thermogenic stray gas originating from underlying oil and gas producing formations. Inadequate surface casing and leaks in production casing and wellhead seals in older, vertical oil and gas wells were identified as stray gas migration pathways. The rate of oil and gas wellbore failure was estimated as 0.06% of the 54,000 oil and gas wells in the basin (lower estimate) to 0.15% of the 20,700 wells in the area where stray gas contamination occurred (upper estimate) and has remained steady at about two cases per year since 2001. These results show that wellbore barrier failure, not high-volume hydraulic fracturing in horizontal wells, is the main cause of thermogenic stray gas migration in this oil- and gas-producing basin.

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