... method for evaluating the strength and shape of the improved soil has been established using the relationship between the uniaxial compression strength of the improved sand and the concentration of silica in the chemical solution, and the relationship between the electrical resistivity of the improved...

... resistivity characteristics of cement-enhanced soils. A series of tests showed that dynamic probing can be applied up to about 2 days of curing age, and that the electrical resistivity immediately after construction and the Nd-value at initial age are related. The electrical resistivity and Nd-value...

... prototype drilling tool assembly detection tool flapper-valve seat gas hydrate resistivity formation resistivity Abstract The exploration and sampling efficiency of marine gas hydrate formation can be increased by using the wire-line retrieving drilling tools that includes both an advancing...

... ABSTRACT The possibility of using resistivity to measure the foot protection diameter of a bored pile was investigated. Both laboratory experiments and on-site experiments were conducted using a four-pole electrode arrangement. In the laboratory experiments, we investigated the relationship...

... reasons, but the rate of failures caused by internal failure of the insulation system is very low. riser cable id 3082 voltage xlpe cable flowline sheath cable insulation id 3088 resistivity investigation xlpe insulation id 3087 conductor requirement deh system platform upstream...

... thickness freezing temperature concentration lomonosov moscow state university reservoir characterization modeling upstream oil & gas permafrost drilling operation resistivity laptev sea laboratory test electrical resistivity bottom sediment drilling profile sediment university fast ice...

... ABSTRACT. For the safety management of soil slopes along expressways, it is quite important to develop an effective surveying method to detect the vulnerable slopes against instability, land slide, and mud flows. The authors have used an airborne electrical resistivity survey method, so called...

... conducted in scientific drilling at Manus Basin (ODP Leg. 193), comprehensive logging while drilling (LWD) observations were rarely conducted even with small Bottom Hole Assembly (BHA) until our two expeditions: CK14-04 and CK16-01. Although the high-resolution electrical resistivity imagery tool...

... is similar to that of the soil resistivity. On the basis of this result, the equation for estimating the critical shear stress of coarse-grained soils could be proposed using the relationship between the critical shear stress and soil resistivity. INTRODUCTION An erosion of coarse-grained soils happens...

... speed of 25 mm/min and a jaw separation of 20 mm were used for the tests. Volume Resistivity Volume resistivity was measured on sample plates with approximate dimensions (200x30x2 mm). The method used for test of volume resistivity is based on IEC 60502-2, but adapted to measurements on plates. Four...

... for Innovative Grouting Materials and Technology)Penetrometer. Also, the electrical resistivity of the soft clays was correlated to the shear strengths so it can be used for better monitoring in field. In addition, three different types of model anchors (steel, concrete and plastic) were tested for pull-out...

..., the estimation of volume water content was carried out using a resistivity survey based on the results of a field survey. These results indicate that the relationships between ground temperature and specific resistivity are different in each range in volume water content. It is necessary to correct the specific...

... the determination method of the soil by electrical resistivity using Swedish Weight Sounding test holes, a lot of information will be gained. As an ideal way, the electrical logging method by the electrode to the Swedish Weight Sounding test hole is effective. The purpose of this study is intended to clearly...

... accumulation device which was built by our laboratory to simulate the methane hydrate accumulation under the seafloor conditions. First, the real-time detection and analysis were made for the electrical resistivity and acoustic velocity changes at different positions over time during 80 days of methane hydrate...

... oilfield chemistry temperature prediction model paraffin remediation layout hydrate formation boundary condition fluid temperature remediation of hydrates cold spot heat transfer production control htc resistivity deadleg hydrate inhibition heat loss production monitoring production...

... of a resistivity method that can be used to evaluate variations in the quality of improved ground immediately after construction. experiment log analysis chikusei quality evaluation us government well logging coefficient compressive strength electrical resistivity mamoru fujii strength specimen...

... methods have been used for many years in soils characterizations as they are rapid, non-destructive and cost-effective. The aim of this research work is to use simple multimeter and few electrodes to acquire apparent resistivity values of subsurface soil and subsequently correlate it with SPT N-values...

... compression test of core samples, can be directly evaluate the soundness of the improved columns. These methods are normally applied considerably long time after the completion and depend on the results of tests, are necessary to reworks. We have developed and studied the applicability of resistivity method...

... In this paper, based on two series of laboratory compaction tests with resistivity measurement, the relationships between the resistivity and physical properties of the soil and the selection of the optimum compaction control index are discussed. Discussed also is a procedure for correcting...

... results from measurements of mechanical and electrical properties of different candidate semi-conductive cable outer sheath materials aged in relevant service conditions and measurements of electrical resistivity and water content of clay samples taken from relevant oil fields. The results are very...