Results 271 to 280 of about 9,333,414 (344)

Organophilic Clay-Based Drilling Fluids for Mitigation of Unconventional Shale Reservoirs Instability and Formation Damage

Journal of energy resources technology, 2019
High-performance drilling fluid was designed for unconventional reservoirs to minimize the formation damage and borehole instability using organophilic clay treated with trimethyloctylammonium bromide, novel in-house synthesized gemini surfactant, and a ...
H. Ahmad, M. Kamal, M. Mahmoud, S. M. Shakil Hussain, Mohamed Omar Abouelresh, Mamdouh A. Al‐harthi   +5 more
semanticscholar   +1 more source

Evaluation of Formation Damage of Oil-Based Drilling Fluids Weighted with Micronized Ilmenite or Micronized Barite

, 2020
Solids found in drilling fluids, particularly weighting materials, can cause significant formation damage by plugging of formation pores. This study investigates formation damage caused by using oil-based drilling fluid systems weighted by micronized ...
A. Ibrahim, M. Al-Mujalhem, H. Nasr-El-Din, M. Al-Bagoury   +3 more
semanticscholar   +1 more source

Detection Of Deep Formation "Damage"

Annual Technical Meeting, 1968
Abstract The characteristics of deep formation "damage" and low permeability appear quite similar on a formation test conducted in a normal manner. As a result, with such tests, a good reservoir with deepdamage appears quite similar to a poor reservoir with low permeability.
M. Lebourg, A.T. Campbell, E.J. Witterholt   +2 more
openaire   +1 more source

Damage formation in polymers

International Journal of Engineering Science, 1984
Abstract This paper describes the application of a NAG (Nucleation And Growth) computational model to void accumulation during quasistatic tests of polymers and discusses some experimental techniques used to detect and quantify damage (i.e., void or microcrack accumulation) in these materials. The experimental techniques described here are ultrasonic
openaire   +1 more source

DNA Damage Focus Formation Assay

2019
Advanced techniques allow investigating cellular DNA damage measurements. Ionizing radiation produces multiple DNA damages. Among them, DNA double strand breaks are most toxic to cells. DSBs can form mutations, chromosome aberrations, and cell killing.
openaire   +2 more sources

Pyrobitumen Induced Formation Damage Problems

SPE Formation Damage Control Symposium, 1996
Abstract Pyrobitumen is a black solid insoluble carboniferous deposit derived from thermal degradation of hydrocarbons. Although the organic material has been observed in carbonate rocks world-wide, very little is known about its effect on some basic rock properties such as porosity, permeability, wettability, and potential for formation
J.C. Shaw, R. Tsuen, S.M. Leggitt, L.L. Schramm, D.N. Rao   +4 more
openaire   +1 more source

Investigation of Formation Damage Induced During Drill-In Process of Ultradeep Fractured Tight Sandstone Gas Reservoirs

Journal of energy resources technology, 2019
Ultradeep fractured tight sandstone gas reservoir is easy to suffer from severe formation damage during the drill-in process, yet few papers have been published on the corresponding formation damage mechanisms.
Dujie Zhang, Yili Kang, Lijun You, Jiaxue Li   +3 more
semanticscholar   +1 more source

Asphaltene Near-wellbore Formation Damage Modeling

SPE Formation Damage Control Conference, 1998
Abstract When during oil production the thermodynamic conditions within the near-wellbore formation lie inside the asphaltene deposition envelope of the reservoir fluid, the flocculated asphaltenes cause formation damage. Mathematically, formation damage is a reduction in the hydrocarbon effective mobility.
openaire   +1 more source

Formation Damage From Acid Treatments

SPE Production Engineering, 1990
Summary Well treatments with only HCl are potentially damaging in formations that contain aluminosilicate minerals (clays, feldspars, and micas) because HCl reacts significantly with aluminosilicates, leaching aluminum and forming hydrated silica.
Steven L. Bryant, David C. Buller
openaire   +1 more source

An Integrated Method To Evaluate Formation Damage Resulting from Water and Alkali Sensitivity in Dongping Bedrock Reservoir

SPE Reservoir Evaluation and Engineering, 2019
Dongping Field with low porosity and permeability, located in the Qaidam Basin, is the largest bedrock reservoir in China. Because of its high content of clay minerals and poor physical properties, the reservoir tends to suffer from formation damage ...
Lufeng Zhang, Fu-jian Zhou, M. Pournik, Tianbo Liang, Jin Wang, Yuechun Wang   +5 more
semanticscholar   +1 more source