hydraulic fracturing fluid Articles

  • Electrical control valve actuators on oil and gas production separators

    Overview Wherever there are oil and gas production facilities there is one specific piece of equipment that is almost always present, the separator. Depending on the nature of the reservoir, oil, gas and water are present in varying proportions. The first stage of any hydrocarbon production process once the product has started to flow from the well is to separate the gas from the liquids and ...


    By Rotork plc

  • Can disclosure rules clarify what’s in our groundwater? Enhesa’s US consultant Rachel Degenhardt on hydraulic fracturing & groundwater contamination in ELQ

    This month, Enhesa US Regulatory Consultant, Rachel Degenhardt, was published on the issue of hydraulic fracturing and groundwater contamination in Berkeley’s Ecology Law Currents, an online publication of Ecology Law Quarterly, one of the nation’s most respected and widely read environmental law journals. “The U.S. EPA is working to increase transparency regarding the ...

  • Effect of shear rate on the activity of enzymes used in hydraulic fracture cleanup of tight unconventional reservoirs

    Injection of polymeric solutions in order to propagate a fracture and carry proppants to keep the fracture open is a common practice in hydraulic fracturing of ultra–tight formations. Polymeric fluids open and extend the already existing network of fractures. Considering the low permeability of the formation, small width of the micro–fractures, and the importance of fracture cleanup during the ...


    By Inderscience Publishers

  • Real-Time Surrogate Monitoring of Groundwater Pollutants at Oil and Gas Production Sites

    Using surrogates to monitor groundwater quality in real time The development of oil and gas resources, especially by hydraulic fracturing, has increased concerns about potential groundwater contamination (Figure 1).Typically, grab sample collection and expensive analytical tests are required to determine whether or not groundwater quality has been compromised.Time-consuming analytical ...


    By In-Situ, Inc.

  • Systematic approach to numerical simulation and modelling of shale gas reservoirs

    With the rapid development of unconventional resources in the USA and its contribution by diminishing energy dependency on foreign supplies, reservoir simulation technology is facing new challenges in providing key information to be utilised for long-term development decisions. Therefore, growth in shale gas reservoir development necessitated new approach to reservoir simulation. In this paper, ...


    By Inderscience Publishers

  • Hydraulic Fracturing and the Environment Whitepaper - Analytical and Measuring Instruments

    The recovery of natural gas and oil from untraditional wells is necessary for the economic stability of the United States. Shale gas deposits are deep below the earth’s surface and recovery of gas is expensive and requires millions of gallons of water mixed with chemicals, known as "fracking solution". Most fracking solution stays underground or returns to the surface mixed with formation ...

  • Frac Water Recycling White Paper

    Balancing the risk of well damage with the economic benefits of frac wastewater reuse can be difficult.  In conjunction with Environmental Daily Advisor, Anguil Aqua Systems has sponsored a detailed report which answers some of the tough questions about fracking and water use.   ...

  • Large and small hydraulic fracturing projects - Case Study

    Northern Agri-Services has specialized in the field of water movement for over 50 years. Working with both large and small hydraulic fracturing projects, Northern prides itself in manufacturing your products quickly and correctly so that your down time is minimized. ...

  • Questions And Answers About Saltwater Spills

    An estimated 1 million gallons of saltwater generated by oil drilling has leaked from a North Dakota pipeline, company and tribal officials say, and federal authorities are investigating whether any of the liquid reached Lake Sakakawea, one of the nation's largest man-made lakes. Here are some questions and answers about the spill and saltwater: Q: How does oil drilling produce ...


    By Associated Press

  • Introduction to a New Apparatus for Hydraulic Fracturing Tests

    A new apparatus for hydraulic fracturing tests, on which the seepage and force boundary conditions can be controlled strictly, is briefly introduced here. Some test results obtained by using this apparatus are presented as an example. These results were compared with theoretical results obtained from rigorous mechanical analysis to illustrate the advantage of this ...


    By ASTM International

  • Fracking & Shale Gas

    Unconventional natural gas production (shale gas) by hydraulic fracturing - Quantification of the Environmental Footprint Due to the global decline of fossil energy reserves and resources, unconventional natural gas production has become increasingly important in the last decade. In this context, unconventional natural gas production means the production of shale gas, tight ...


    By thinkstep

  • Not All Frac Sand is Created Equal

    Frac sand is the most commonly used proppant. The term “proppant” is used because it literally props open fractures enabling the oil or gas to flow out. Without proppant, there is no hydraulic fracturing, and without hydraulic fracturing there is no opening or stimulation of tight oil and gas plays. E&P (exploration and production) companies pump proppants based on ...


    By Fairmount Santrol

  • Reservoir Monitoring in Delvina, Albania Monitoring - Case Study

    Reservoir Monitoring At the end of December 2011, STREAM OIL&GAS Ltd had planned to apply the technique of hydraulic acid fracturing in the Well D-12 of the Delvina block, aiming to increase the well’s natural gas productivity rate. In this context, Seismotech Geophysical Solutions was asked to monitor and analyze the possible microseismic activity on this area, ...


    By SeismoTech Ltd

  • Case study - Shale gas extraction: frac water treatment

    The client The Client is a company which makes part of a Group based in the Eastern Europe and specialized in drilling activities and well services for the exploration/extraction industry. The Client’s needs Shale is a sedimentary rock that is predominantly comprised of consolidated clay-sized particles. Shale gas is produced from ...


    By EVALED-Evaporator

  • Answers to questions about oil waste in California aquifers

    California, the country's third-largest oil-producing state, has improperly given oil companies more than 2,500 permits to inject production fluids and oilfield waste into underground water supplies that are used for drinking water or irrigation, state records show. Nearly half of those disposal wells were approved or first started injections in the last four years under Gov. Jerry Brown, an ...


    By Associated Press

  • Cracking down on Fracking: The US Regulatory Trend and what that means for Oil Companies

    In June 2011 Enhesa is focusing on an emerging Oil & Gas issue, which has recently become a major concern for Oil Companies in the United States. Hydraulic fracturing or “fracking” has long been used for natural gas and oil production in the United States. However, due to growing concern on its environmental impacts, the US Federal Government and various states are assessing the ...

  • Are Fines Reducing Your Hydrocarbon Production?

    Although choosing frac sand can reduce completions design cost initially, there can be short-term and long-term issues: Proppant flowback, proppant embedment, and decreased fracture conductivity, in addition to fines, can negatively affect hydrocarbon production. What are fines? Fines are generated by crushing of proppant, by erosion of sand on the fracture face during treatment, ...


    By Fairmount Santrol

  • Importance of discrete-zone monitoring systems in fractured-bedrock wells -- A case study from the University of Connecticut landfill, Storrs, Connecticut

    Monitoring of hydraulic head is an important part of many hydrogeologic investigations because it is used to determine the rates and directions of ground-water flow. In unconfined aquifers, open-hole water levels can be used to establish meaningful conceptual models of ground-water flow. In heterogeneous fractured-rock aquifers, however, where the hydraulic head can be different for each fracture ...


    By Solinst Canada Ltd.

  • Fracking wastewater treatment at collection facility

    Abstract Engineering company operates a wastewater collection and treatment facility for their clients in Myton, Utah. The facility receives fracking and produced wastewater from various pumping stations, and then treats the water for disposal at the injection well located on site. Electrocoagulation followed by two clarifiers and 5 micron filter was used. Since many particles float or just ...


    By Clean Water Technology, Inc.

  • World Oil: Proppant-sized solid inhibitors improve flow assurance in fraced wells

    The economic value of a hydraulically fractured well is highly dependent upon flow assurance—that is, maintaining unimpeded flow of hydrocarbons from the formation to the surface. Flow assurance issues occur in hydraulically fractured wells, as a result of the deposition and buildup of naturally occurring particulates that are present in the system during hydrocarbon production. Scale is ...


    By Baker Hughes, a GE company

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