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Borehole Casing Articles & Analysis
19 articles found
At the same time, the friction of the soil immediately adjacent to the entire drill string is substantially minimized, resulting in faster penetration rates. Borehole advancement accelerates as a result of shearing and displacement. ...
By using nested wells—one monitoring location with one large borehole that holds multiple well casings, each with screen intervals at distinct depths to target specific aquifers—WRD has been able to collect a wealth of data from a manageable number of sites. ...
APPLICATION Monitoring a borehole after a diesel spill to en-sure the aquifer is not contaminated. CUSTOMER Water Company, England. PROBLEM The water company used a diesel-powered pump, and this led to a spill from the storage tank. The company wants to ensure that the ar-ea has been properly ...
APPLICATION Monitoring a borehole for contamination from a known petroleum spill. CUSTOMER Water Company, UK PROBLEM The customer wished to monitor hydrocarbon levels in a borehole for drinking water. The customer had attempted to use a UV based system but found that the system would only last a matter of a few days before ferric and manganese deposits stopped the system from ...
This well was constructed with a 20 inch borehole and 16 inch well casing and when completed yielded 1,800 gallons of water per minute. ...
ByCETCO
Project Details Groundsource Heat Pump Installation 16 boreholes, 630 ft depth Location Roman Condominiums Burlington, Ontario Products Used Geothermal Grout Cetco Crumbles ACCU-VIS K&E Silica Sand Oakville Hydro Energy Services commissioned Geosource Energy Inc. to install geothermal heat loops for a new condominium complex being constructed by an Ontario developer, ...
ByCETCO
Prove it? They can now! Landfill technicians and environmental consultants can now find and prove borehole locations with a GPS-enhanced portable gas analyser from Geotech. Its on-board GPS guidance system takes staff to the precise location of the 1000 it can store. It adds the GPS-received location, date and time to the gas analysis record. GPS locations can be added at boreholes or pre-loaded ...
Current landfill gas measurement practice for measuring the gas composition is well understood, and there are standard procedures and instruments available to analyse the gas. It is also current recognised practice to measure the gas 'flow' from boreholes to monitor the production of gas in a landfill site. If care is taken to make the measurement in the same way each time, changes in the 'flow' ...
The System uses modular components of various casing lengths, sampling ports, and optional packers that are connected to form a sealed casing string. ...
Gas screening values are the product of gas concentration values and the flow measurement taken from the borehole being monitored. The technologies used for gas measurement are well known and accepted as fit for purpose, however this is not the case for borehole flow measurement. ...
Drilling boreholes for exploration can be cost ineffective and time consuming. Doing surface-point resistivity survey can provide fast and accurate results, with known position of the target, FlashRES can utilize its electrodes in borehole to target the position of the target, this enables operators to have a good understanding of the interested area. ...
Surface borehole method can be used to effectively maximise the value of existing boreholes. This is because surface-boreholre method can give operator more geological and geophysical information around the borehole. For example, we did a surface-borehole survey, where there was already well-known mineralisation existing between 60-80m in Figure one and 100-115m. The inversion resistivity ...
The possibility of fluids leaking from a pressurised drill pipe casing subject to shear deformation caused by various events, including geological activity (such as seismic activity or deformations associated with subsidence related to excavation and construction) in the vicinity of the bore hole, is investigated. An experimental laboratory scoping investigation has been conducted to determine ...
Environmental and engineering firms often are tasked with performing soil borings for monitor well installation as part of a Phase II Environmental Site Assessment. This task becomes more challenging when the borings are to be installed in gasoline stations, right of ways or other areas where there are numerous underground utilities that are either unmarked or not properly located. GeoView can ...
Corozal, Puerto Rico GeoView was tasked to conduct borehole geophysical logging of at a groundwater extraction well in the rural area of the Municipality of Corozal, Puerto Rico. Prior groundwater tests indicated possible contamination of the groundwater. The study area was primarily underlain by stratified, mostly dark gray basaltic tuff, andesite and basalt porphyry rocks assigned to the Los ...
Within a cooperation project coordinated by the Association for Rural Cooperation in Africa and Latin America (ACRA) Foundation, water supplies were sampled across the villages of the Logone valley (Chad-Cameroon) mostly from boreholes, open wells, rivers and lakes as well as from some piped water. ...
Case 1 A surface-borehole resistivity survey completed for bridge construction As shown infigure 1, this surface-borehole survey was configured to accurately locate known caves for structural reasons. ...
Drilling geothermal holes in under three hours, sonic rigs have set the pace. Drilling a test hole for a future geothermal project, a Sonic Drill Corporation rig was able to bore past 300ft and complete the hole in two hours and three minutes. The drilling project, part of a law library extension for the University of British Columbia in Canada, was contracted to Hemmera Energy, a division of ...
The bottom of the well screen was fitted with a section of blank casing to act as a sump for the accumulation of DNAPL. A cone-shaped cement basket was attached to the bottom of the screen to funnel DNAPL into the sump. Prior to setting the casing, a calculated volume of neat cement was tremied to the bottom of the borehole. The ...