scholarly journals Hypogene Point Karstification along Wadi Sirhan Graben (Jordan): A Sign of Oilfield Degassing?

2012 ◽  
Vol 41 (1) ◽  
Author(s):  
Ahmad Al-Malabeh ◽  
Stephan Kempe
Keyword(s):  
Water Table ◽  
Oil Shale ◽  
Oil Fields ◽  
Oil Well ◽  
Large Area ◽  
Bacterial Oxidation ◽  
Well Drilling ◽  
Large Bell ◽  
Collapse Structures

Jordan is a country with a large area of limestone. Nevertheless, only a few limestone caves are known. Here we report about two caves along Wwadi Sirhan Graben of Jordan that appear to have formed by stoping upward of collapsed deep-seated hypogene cavities along breccia pipes. The first one, Uwaiyed Cave, is a small breakdown-dominated chamber in basalt of the Naslet Al-Dhirwa volcano; the second, Beer Al-Malabeh, is a large, bell-shaped sinkhole that has geologically recently opened up to the surface. Wwe discuss the possible processes that led to their formation. The review of the existing stratigraphy as obtained by oil well drilling suggests that no salt layers occur below the caves. Gypsum layers seem to be limited to 4  m in thickness, probably not enough to form the observed features. The remaining process is dissolution caused by ascending gas (H2S or CH4) -rich waters from the underlying oil and oil-shale fields. Wwhen such solutions reach the water table, bacterial oxidation may create enough dissolutional power to form localized and large cavities. Their collapse could lead to the observed collapse structures and would explain the paucity of other cave structures throughout southeastern Jordan.Keywords: Jordan, hypogene caves, sinkholes, oil fields, methane.

scholarly journals Groundwater surveys in Developing Regions

2010 ◽  
Vol 3 ◽  
pp. ASWR.S6053
Author(s):  
Jeff Lewis ◽  
Birgitta Liljedahl
Keyword(s):  
Arid Regions ◽  
Groundwater Resources ◽  
Large Area ◽  
Developing Regions ◽  
Well Drilling ◽  
Regional Flow ◽  
Groundwater Aquifer ◽  
Interpretation Patterns ◽  
Hydrogeological Information ◽  
Semi Arid

This paper discusses the interpretation of surface features that can assist in the evaluation of groundwater resources in semi-arid and arid developing regions. The lack of infrastructure in these areas places serious constraints on borehole drilling, which in turn limits the data which can be obtained directly from the subsurface. Under these conditions, surface indicators may be used to infer useful information about the subsurface, which includes shallow aquifers. This article summarizes those surface indicators which provide useful data in arid and semi-arid regions and provides a review of the literature to assist in their interpretation. Patterns of surface indicators covering a large area may be more effective and less costly for interpreting basic regional hydrogeological conditions than detailed data obtained from a limited number of boreholes. The hydrogeological information which can be obtained by using the methods discussed in this article include the regional flow patterns, an estimate of the depth to groundwater, aquifer geology and estimates of the regional recharge and discharge zones. This data may in turn provide support for subsequent well drilling campaigns, limited environmental assessments, and potable water assessments for humanitarian base camps in developing regions.

Neural network based controllers for the oil well drilling process

2019 ◽  
Vol 176 ◽  
pp. 573-583 ◽  
Author(s):  
Vanessa de Jesus da Silva Ribeiro ◽  
Gabrielle Fontella de Moraes Oliveira ◽  
Muara Cristian ◽  
André Leibsohn Martins ◽  
Lindoval Domiciano Fernandes ◽  
...  
Keyword(s):  
Neural Network ◽  
Oil Well ◽  
Drilling Process ◽  
Well Drilling

scholarly journals New Oil Well Drilling Record

Nature ◽  
1934 ◽  
Vol 134 (3375) ◽  
pp. 21-21
Keyword(s):  
Oil Well ◽  
Well Drilling

scholarly journals Study on the stability of a shear-thinning suspension used in oil well drilling

2018 ◽  
Vol 73 ◽  
pp. 10 ◽  
Author(s):  
Flávia M. Fagundes ◽  
Nara B.C. Santos ◽  
João Jorge R. Damasceno ◽  
Fábio O. Arouca
Keyword(s):  
Gamma Ray ◽  
Drilling Fluid ◽  
Shear Thinning ◽  
Drilling Fluids ◽  
Oil Well ◽  
Drilling Process ◽  
Well Drilling ◽  
Constant Rate ◽  
The Stability ◽  
Solid Liquid

In order to avoid solid-liquid gravitational separation of particles in the drilling fluid and cuttings generated in this process, the oil industry has been developing drilling fluids with shear-thinning and thixotropic characteristics. In case of operational stops in the drilling process, the intense sedimentation of these particles can damage the equipment used and the well. In this context, this study simulated an operational stop to obtain information about stability of solids in a paraffin-based suspension with time-dependent shear-thinning behavior, which has already been used in current drilling processes. A long-term test using gamma-ray attenuation technique identified the separation dynamics of a set of micrometric particles belonging to and incorporated into the drilling fluid during operation. This test verified the typical regions of gravitational sedimentation and, through constant concentration curves, indicated that the sedimentation process did not occur at a constant rate. This study also proposed a constitutive equation for pressure on solids.

scholarly journals Propylene glycol mono and di stearates as water in oil emulsifiers for oil-well drilling fluids

2018 ◽  
Vol 27 (4) ◽  
pp. 1035-1041
Author(s):  
M.M. Dardir ◽  
Hany Elsayed Ahmed ◽  
M. Abd El Fattah ◽  
Mohammed Ezz El Din Rashad Hassan ◽  
Hesham Abu Seda ◽  
...  
Keyword(s):  
Propylene Glycol ◽  
Drilling Fluids ◽  
Oil Well ◽  
Well Drilling
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