horizontal wells Articles

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Effect of the number and length of zonal isolations on pressure behaviour of horizontal wells

by Inderscience Publishers  (Feb. 21, 2014)

Horizontal wells with multiple zonal isolations have become a common completion technique in the oil and gas industry. Sand problems, damaged zones, and water or gas coning are the main reasons for using isolators to sustain or improve oil and gas recovery. However, they have certain effects on pressure behaviour of horizontal wells. This paper ...

Horizontal mixers for secondary combustibles case study

by AVA- Huep GmbH u. Co. KG  (Apr. 14, 2014)

The manufacture of secondary combustibles from household waste, industrial waste and special waste in accordance with statutory requirements is to be a huge challenge for system suppliers in the coming years. Currently, at times, extremely differing substances are treated in such a way that they can be loaded into conventional furnaces. The most ...

Evaluation of a Horizontal Well

by Directed Technologies Drilling Incorporated (DTD)  (Oct. 5, 2010)

Background: Air Sparging Air sparging is an in-situ remediation technology where air is injected into the saturated zone of an aquifer. It is an alternative to conventional ex-situ pump and treat systems for remediation of contaminated ground water. It is necessary to understand the pattern of air flow that will occur in the subsurface in order to ...

Pressure behaviours and flow regimes of a horizontal well with multiple inclined hydraulic fractures

by Inderscience Publishers  (Dec. 4, 2012)

Hydraulic fractures have become a common stimulation application in the oil and gas industry, especially in tight formations. Published models assume the hydraulic fractures are vertical and symmetric. However, recent studies have shown that fractures are asymmetric and inclined with respect to the vertical direction and the axis of the wellbore. ...

Time-Tested Advantages of Horizontal Wells

by Directional Technologies, Inc.  (Oct. 22, 2010)

Wells are wells are wells, right? Both conventional vertical wells and directionally drilled horizontal wells have a screened casing that is connected to solid riser casing which leads to the ground surface. Groundwater or soil vapor is drawn through a well screen to remove contaminants. Remediation agents such as air, bioamendmnents or potassium ...

Horizontal Soil Vapor Extraction and Horizontal Air Sparge Wells Case Study-

by Directional Technologies, Inc.  (Jul. 6, 2011)

Directional Technologies Is The Expert At Horizontal Soil Vapor Extraction   A horizontal soil vapor extraction well and two horizontal air sparge wells rapidly remediate contamination in situ under a research and development facility. These horizontal wells were installed by environmental directional driller Directional ...

Electrical heating with horizontal wells, the heat transfer problem

by McMillan-McGee Corp.  (May 13, 2011)

Outline Present our mathematical solution of the axial heat transfer problem for electrical heating of a horizontal well. Present some results. Calculation Procedure Derive the Heat Transfer PDE for each region. Obtain the Laplace Transforms of these equations. Solve the above equations. ...

Horizontal Remediation Wells used in order to preserve military security

by Directional Technologies, Inc.  (Nov. 11, 2010)

Project Description: Remediate a plume of trichloroethylene (TCE) under multiple military buildings by air sparging (AS) and soil vapor extraction (SVE). There are two target zones: the shallow zone is approximately 70' below grounds surface (bgs) and 20' below this is the deep zone. The plume was located under multiple buildings comprising an ...

How much does a Horizontal Remediation Well cost?

by Directional Technologies, Inc.  (Oct. 22, 2010)

In the early days of horizontal remediation wells, the estimated costs made many projects completely unfeasible. However, with the advance of technology in directional drilling and innovative solutions within the environmental industry, this technology is becoming affordable and practical. Like most environmental projects, the cost of a Horizontal ...

DTI installs 3 blind horizontal remediation wells in cobble

by Directional Technologies, Inc.  (Oct. 22, 2010)

The Issue An active retail gas station next to a wetland area has benzene and trimethylbenzene plumes in a water table aquifer containing sand, gravel and cobbles. Rock fragments and boulders several feet in diameter lie in the vadose zone, between the ground surface and the water table. Business at the gas station would slow down or stop for an ...

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