Based on principle and methods for base level cycle, the drilling, well logging, seismic and geochemical data from Hadexun area are analyzed. One I-type and three II-type sequence interfaces of Lower Carboniferous are recognized, and three medium-term base level cycles (SC_1, SC_2, SC_3) corresponding to three transgressive-regressive cycles are classified.
The Analysis of Application Effect on Shielding and Diverting Liquid of Drilling Well and Completing Well Technology in Low Pressure and Low Permeability Gas Reservoir.
Platform AI has made a great progress in the aspects of loose surface layer detecting,hole trajectory control,raising well-drilling effeciency by new technology,reducing costs etc.
Based on the data of well-drilling, cores and well-logging, this paper has constituted a criterion of recognizing and dividing reservoir rocks in the studied area, and has divided and evaluated the carbonate reservoir beds of lower Ordovician in Ln1 and Ln8 wells.
Drilling new techniques of top drive,MWD,steerable drilling system etc. and some measures how to raise well-drilling speed and guarantee quality are analysed and summarized to provide successful experiences for the development and construction of offshore key enineering and the further spread and application of cluster directional drilling techniques.
Two hundred and eighty-one samples, collected from drilling core NS93-5 located in the Nansha area of the South China Sea, were used to study the magnetic characteristics of the sediments in the sea.
Based on studies of regional tectonic setting and the observation of drilling cores, the seismite is recognized in member III at Shahejie Formation in the Xianhe area of the Dongying sag.
By observing the drilling cores of He 152, Wang 59, Niu 38, Niu 22 and so on, we found that the vertical sequences of the seismite are different because of the differences in structure and seismic intensity.
Based on analysis of the well drilling core from Subei basin, the authors conclude that during the Late Cretaceous and Paleocene, Subei basin was linked with the sea and the deposit was affected by transgression.
On the basis of seismic and well drilling data, the deposits in the area were studied by using sequence stratigraphy and reservoir prediction techniques.
Vertical, depth-discrete groundwater samples were collected during well drilling throughout a 28-km2 region to determine the concentration of carbon tetrachloride present as a dissolved phase in the aquifer.
Molecular stable carbon isotope technique was employed to study well-sourced crude oils collected from a single drilling well and from the entire Lunnan oilfield, Tarim Basin, NW China.
There were some shading effects from the surface layering of well-drilling fluids as reflected in the fatty acids from the microflora when compared to the sands mixed with well-drilling fluids.
The reef building coral,Montastrea annularis, was exposed continuously to suspensions of oil and gas well-drilling fluids at concentrations of 0.1, 0.01, and 0.001 μl/ml in flowing seawater at the U.S.
钻井
drilling
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